System and Method for Conditioning a Hardwood Pulp Liquid Hydrolysate

A system and method for hardwood pulp liquid hydrolysate conditioning includes a first evaporator receives a hardwood mix extract and outputting a quantity of vapor and extract. A hydrolysis unit receives the extract, hydrolyzes and outputs to a lignin separation device, which separates and recovers a quantity of lignin. A neutralization device receives extract from the lignin separation device and a neutralizing agent, producing a mixture of solid precipitate and a fifth extract. The solid precipitate is removed from the fifth extract. A second evaporator removes a quantity of acid from the fifth extract in a vapor form. This vapor may be recycled to improve total acid recovery or discarded. A desalination device receives the diluted extract, separates out some of the acid and salt and outputs a desalinated solution.

NON-SCALING WET AIR OXIDATION SYSTEM AND PROCESS

There is provided a system and a method for regenerating a material that reduce the incidence of scaling due to scale forming contaminants. The method may include reducing a temperature of a treated material exiting a wet air oxidation unit in a scale reducing heat exchanger prior to delivery of the treated material to a second heat exchanger which heats a source waste material comprising a scale forming contaminant therein with heat from the first treated material to form a heated waste material comprising the scale forming contaminant. 124-. (canceled)25. A treatment process comprising:reducing a temperature of a regenerated carbon material exiting a wet air oxidation unit in a first heat exchanger;delivering the reduced temperature regenerated carbon material from the first heat exchanger to a second heat exchanger, wherein the second heat exchanger heats a spent carbon material comprising spent carbon and a scale forming contaminant with heat from the regenerated carbon material to generate a heated spent carbon material; anddelivering the heated spent material to the wet air oxidation unit for regeneration of the heated spent carbon material;wherein the temperature is reduced to a temperature less than a solubility temperature limit of the scale forming contaminant at a given concentration of the scale forming contaminant.2636. The process of claim , wherein the temperature is reduced to a temperature of about 100° C. to about 185° C.2735. The process of claim , wherein the regenerated carbon material further comprises an oxygen depleted gas mixture , wherein the oxygen depleted gas mixture is also utilized to heat the spent carbon material.2835. The process of claim , wherein the scale forming contaminant comprises a member selected from the group consisting of aluminum , calcium , carbonate , iron , magnesium , phosphorus , sulfate , and combinations thereof2939. The process of claim , wherein the scale forming contaminant comprises calcium sulfate.3135. The ...

METHOD FOR RECOVERING CHEMICALS AND BY-PRODUCTS FROM HIGH-SULPHIDITY PULPING LIQUORS

A method used in connection with the recovery of pulping chemicals from spent pulping liquor produced by kraft-type pulping at very high sulphidity. In the method, spent pulping liquor is acidified to a relatively low pH which converts a most or all of the sulphide and hydrosulphide in the liquor to hydrogen sulfide. Sulphur containing gases released from the acidification of the spent pulping liquor, together with other sulphur gases collected at the pulp mill, are converted into an acid compound. This acid compound is employed as an acidification agent in the acidification of the spent pulping liquor. The amount of acid compound generated by the conversion of sulphur containing gases may be sufficient to provide most, if not all, of the acid needed for the acidification of the spent pulping liquor. 1. A method to be used in connection with recovery of pulping chemicals from spent pulping liquor produced by kraft-type alkaline pulping at very high sulphidity , the method comprising:a) acidifying the spent pulping liquor in one or more stages to a pH low enough to convert at least a large portion of both hydrosulphide ions and the sulphide ions in the spent pulping liquor into hydrogen sulphide,b) converting to an acid compound sulphur containing gases released in the acidification process of step a), wherein the sulphur containing gases comprise hydrogen sulphide, andc) the acid compound generated in step b) is employed in step a) and the amount of the acid compound generated in step b) is sufficient in quantity to provide at least most of the acid required in step a).2. The method as in claim 1 , wherein the sulphidity employed in the pulping stage is in the range of 50 percent to 100 percent.3. The method as in claim 1 , wherein the pH reached in the acidification step is below 7.4. The method as in claim 1 , wherein claim 1 , in conjunction with the acidification of the spent pulping liquor in step a) claim 1 , one or more by-products are partially or totally ...

KRAFT PULP MILL SCALE CONTROL WITH END GROUP MODIFIED POLYCARBOXYLATES

Scale build-up on metal surfaces of a black liquor evaporator is prevented or mitigated by treating the black liquor with a deposit inhibiting concentration of a water-soluble polymer containing a polycarboxylate chain and a 3-mercaptopropionic acid end group. 1. A method for inhibiting scale build-up on metal surfaces of a black liquor evaporator , the method comprising treating the black liquor with a deposit inhibiting concentration of a water-soluble polymer comprising a polycarboxylate chain and a 3-mercaptopropionic acid end group.2. The method according to claim 1 , wherein the water-soluble polymer has general structure R1-R2-R3 claim 1 , wherein R2 is a polycarboxylate claim 1 , R1 and R3 are independently hydrogen or an end group claim 1 , and at least one of R1 and R3 is the end group —S—CHCHCOOH.3. The method according to claim 1 , wherein the water-soluble polymer comprises a homopolymer or copolymer of acrylic acid.4. The method according to claim 1 , wherein the concentration of the water-soluble polymer in the black liquor is 100 ppm or greater.5. The method according to claim 1 , wherein the water-soluble polymer has a weight average molecular weight of 2000 to 12000 daltons.6. The method according to claim 1 , wherein the water-soluble polymer is a homopolymer or copolymer of acrylic acid chain terminated with 3-mercaptopropionic acid.7. A composition comprising black liquor and 50 ppm or more of a water-soluble polymer comprising a polycarboxylate chain and a 3-mercaptopropionic acid end group.8. The composition according to claim 7 , wherein the black liquor has at least 50% solids by weight.9. The composition according to claim 7 , wherein the water-soluble polymer has general structure R1-R2-R3 claim 7 , wherein R2 is a polycarboxylate claim 7 , R1 and R3 are independently hydrogen or an end group claim 7 , and at least one of R1 and R3 is the end group —S—CHCHCOOH.10. The composition according to claim 7 , wherein the water-soluble polymer ...

BOILER SYSTEM CONTROLLING FUEL TO A FURNACE BASED ON TEMPERATURE OF A STRUCTURE IN A SUPERHEATER SECTION

A boiler system is provided comprising: a furnace adapted to receive a fuel to be burned to generate hot working gases; a fuel supply structure associated with the furnace for supplying fuel to the furnace; a superheater section associated with the furnace and positioned to receive energy in the form of heat from the hot working gases; and a controller. The superheater section may comprise a platen including a tube structure with an end portion and a temperature sensor for measuring the temperature of the tube structure end portion and generating a signal indicative of the temperature of the tube structure end portion. The controller may be coupled to the temperature sensor for receiving and monitoring the signal from the sensor. 1. A boiler system comprising:a furnace adapted to receive a fuel to be burned to generate hot working gases;a fuel supply structure associated with said furnace for supplying fuel to said furnace; a platen including a tube structure with an end portion; and', 'a temperature sensor for measuring the temperature of the tube structure end portion and generating a signal indicative of the temperature of said tube structure end portion; and, 'a superheater section associated with said furnace and positioned to receive energy in the form of heat from the hot working gases, said superheater section comprisinga controller coupled to said temperature sensor for receiving and monitoring the signal from said sensor.2. The boiler system as set out in claim 1 , wherein said temperature sensor comprises a thermocouple.3. The boiler system as set out in claim 1 , wherein said controller monitors the signal from said temperature sensor for rapid changes in temperature of said tube structure end portion.4. The boiler system as set out in claim 3 , wherein rapid changes in temperature of said tube structure end portion comprises a monotonic increase in temperature of least about 25 degrees F. occurring over a time period of between about one to five minutes ...

FURNACE FLOOR PROTECTION IN RECOVERY BOILERS

A method and apparatus for protecting a furnace floor of a black liquor recovery boiler, where the furnace floor is covered by a protective layer, the protective layer being formed of a salt mixture including at least two different salts. 1. A method for protecting a furnace floor of a black liquor recovery boiler , comprising:providing a mixture comprising at least two different salts; andcovering an emptied furnace floor by a layer formed of the mixture comprising at least two different salts.2. The method of claim 1 , wherein the mixture comprises at least one sodium salt.3. The method of claim 1 , wherein the mixture comprises at least one sulfate.4. The method of claim 1 , wherein the mixture comprises at least one carbonate.5. The method of claim 1 , wherein the mixture comprises sodium sulfate.6. The method of claim 1 , wherein the mixture comprises sodium carbonate.7. The method of claim 1 , wherein the mixture comprises sodium sulfide.8. The method of claim 1 , wherein the mixture comprises sodium chloride.9. The method of claim 1 , wherein the mixture consists of two or three different salts claim 1 , each salt being a sodium salt.10. The method of claim 1 , wherein the mixture comprises at least one potassium salt.11. The method of claim 1 , wherein the mixture comprises at least two salts selected from the group of sodium carbonate claim 1 , sodium sulfate claim 1 , sodium sulfide claim 1 , sodium chloride claim 1 , potassium carbonate claim 1 , and potassium sulfate.12. The method of claim 11 , wherein the mole fraction of said at least two salts selected from the group in the mixture is more than 90%.13. The method of claim 1 , wherein the provided mixture has a melting point lower than or equal to 850° C.14. The method of claim 1 , wherein the covering the furnace floor by a protective layer is performed by covering the furnace floor by said mixture by flowing the mixture onto the furnace floor.15. The method of claim 1 , comprising pumping the ...

HEAT TRANSFER TUBE AND METHOD FOR MANUFACTURING A HEAT TRANSFER TUBE

The invention relates to a heat transfer tube () for falling film evaporation having a heating medium surface () to be heated by a heating medium, a falling film surface () to have spent liquor passing over it, and being made from an iron based high alloy stainless steel material with an alloy content above 16.00% for Chromium and above 1% for Nickel. The falling film surface of the heat transfer tube is equipped with one or several protrusions/indentations forming a multitude of stamped bumps (SB) on the envelope surface of a heat transfer tube such that the distance between adjacent stamped bumps (SB) along a line on the envelope surface parallel to the longitudinal axis of the heat transfer tube is within the range of 3 to 250 mm, said stamped bumps (SB) having a height (hp) in the range 0.3 to 5.0 mm, a width (wp) in the range 1.0-20 mm, and an inclination angle (a) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees so that each stamped bump (SB) is inclined and extends along at least a portion of the heat transfer tube or extend within a plane orthogonal to the longitudinal axis of the heat transfer tube. The invention also relates to a method for manufacturing said heat transfer tube. 29. A heat transfer tube () according to wherein said stamped bumps (SB) are stretching continuously from one side of the sheet metal plate to the other side of the sheet metal plate of which the tube is made.3920. A heat transfer tube () according to wherein said stamped bumps (SB) are protruding on the falling film surface ().49. A heat transfer tube () according to claim 1 , wherein the distance along the longitudinal axis of the heat transfer tube between adjacent stamped bumps is in the range 3-100 mm claim 1 , more preferably within the range 5-50 mm and most preferably within the range 5-20 mm.59. A heat transfer tube () according to claim 1 , wherein the height (h) of said stamped bumps (SB) are in the range 0.5-2.0 ...

Apparatus and method for cleaning smelt spouts and smelt discharge openings of a chemicals recovery furnace or boiler

An apparatus comprising a cleaning rod driven in reciprocating, axial extension (y) and retraction (x) movements upon cleaning a smelt discharge opening of a chemicals recovery boiler, wherein a linear actuator is controllable for driving the cleaning rod in the axial movements. A pivot actuation means is controllable for pivoting the cleaning rod about an axis (S) upon cleaning a smelt spout associated with the smelt discharge opening, wherein one or more sensors are arranged to provide control basis for correlation of the axial movements (x; y) with the change in pivot angle (φ) during pivoting of the cleaning rod. A method to be performed in use of the apparatus is likewise disclosed.

DEVICE AND METHOD FOR TREATING THE BLACK LIQUOR RESULTING FROM PULPING BY HYDROTHERMAL LIQUEFACTION

The present invention relates to a paper pulp preparation device comprising a wood component cooking unit and a hydrothermal liquefaction unit. 1. A paper pulp preparation device comprising: paper pulp, and', 'black liquor;, 'a unit for cooking wood components, in which the wood components are separated into two fractions{'sub': 1a', '1b', '1a', '1b, 'the unit for cooking the wood comprising a first inlet Efor introducing wood, a second inlet Efor discharging while liquor, a first outlet Sfor discharging the paper pulp, and a second outlet Sfor discharging the black liquor;'} [{'sub': 12', '1b, 'an inlet Efor the black liquor connected to second outlet Sof the cooking unit;'}, {'sub': '12a', 'a first outlet Sfor an organic phase resulting from the hydrothermal liquefaction;'}, {'sub': '12b', 'a second outlet Sfor an aqueous phase resulting from the hydrothermal liquefaction and containing organic molecules;'}], 'a hydrothermal liquefaction unit allowing the treatment of at least a part of the black liquor, and comprising{'sub': 1-12', '1b', '12, 'a connection line Cbetween outlet Sand inlet E;'}{'sub': '12b', 'claim-text': [{'sub': 17', '12b, 'an inlet Efor the aqueous phase resulting from the hydrothermal liquefaction, connected to outlet Sof the hydrothermal liquefaction unit;'}, {'sub': '17a', 'a first outlet Sof organic molecules;'}, {'sub': '17b', 'a second outlet Sof aqueous phase;'}], 'a separation unit downstream of outlet Sof the hydrothermal liquefaction unit, the separation unit allowing the separation of organic molecules contained in the aqueous phase resulting from the hydrothermal liquefaction, and comprising{'sub': 12-17', '12b', '17, 'a connection line Cbetween outlet Sand inlet E.'}2. The paper pulp preparation device of claim 1 , wherein it further comprises:{'sub': 1b', '5', '5, 'an evaporation unit downstream of outlet Sof the cooking unit, the evaporation unit allowing to concentrate the black liquor, and comprising an inlet Efor the black ...

SYSTEM AND PROCESS FOR PULPING WOOD

Wood pulping process including pulping wood to produce a pulping effluent or liquor. Pre-concentrating the liquor in a pre-concentration unit produces concentrated liquor, a contaminated condensate and a non-contaminated condensate. Directing the concentrated liquor to a multi-effect train of forced circulation solids concentrators that further concentrating the concentrated liquor to form a highly concentrated liquor. Directing the contaminated condensate produced by the pre-concentration unit to a steam stripper and stripping gases therefrom and in the process producing a contaminated vapor stream. Utilizing the contaminated vapor stream and its thermal energy to power the forced circulation solids concentrators of the multi-effect train. 1. A wood pulping process comprising:pulping wood and producing a liquor;pre-concentrating the liquor in one or more evaporators to produce a concentrated liquor, a contaminated condensate, and a non-contaminated condensate;directing the concentrated liquor to a multiple effect train including a series of forced circulation solids concentrators that further concentrate the concentrated liquor to form a highly concentrated liquor;directing the contaminated condensate to a gas stripping unit;steam stripping the contaminated condensate in the gas stripping unit and producing a vapor stream having contaminants stripped from the contaminated condensate;directing the vapor stream from the gas stripping unit to one of the effects of the multiple effect train and heating the concentrated liquor passing through the effect by transferring heat from the vapor stream to the concentrated liquor and employing the thermal energy associated with a vapor stream to power one or more of the other effects of the of the multiple effect train and to heat the concentrate liquor passing therethrough; andburning the highly concentrated liquor produced by the multiple effect train in an incinerator or boiler.2. The method of wherein the liquor is pre- ...

DEPOSIT CONTROL FOR A BLACK LIQUOR RECOVERY BOILER

Disclosed is a process for reducing slag in a black liquor recovery boiler, the process comprising: injecting and burning black liquor in a boiler by contacting it with primary air and secondary air; introducing a slag-reducing chemical into the gases above the injection locations through interlaced, tangential or concentric secondary, tertiary, and/or quarternary air ports. 1. A process for reducing deposits in a black liquor recovery boiler , the process comprising:injecting and burning black liquor in a boiler by injecting it into the boiler and into contact with primary air and secondary air before collecting on a char bed in the boiler near the bottom; introducing deposit-reducing chemicals into the gases above the injection locations for the black liquor through interlaced, tangential or concentric secondary, tertiary, and/or quarternary air ports.2. A process according to wherein the deposit-reducing chemicals are injected into the gases above the injection locations for the black liquor through interlaced secondary air ports.3. A process according to wherein the secondary air comprises from 30 to 50 percent of the air supplied for combustion.4. A process according to wherein the deposit-reducing chemicals are injected into the gases above the injection locations for the black liquor through interlaced tertiary air ports.5. A process according to wherein the tertiary air comprises from 30 to 50 percent of the air supplied for combustion.6. A process according to wherein the deposit-reducing chemicals are injected into the gases above the injection locations for the black liquor through interlaced quaternary air ports.7. A process according to wherein the quaternary air comprises from 20 to 50 percent of the air supplied for combustion.8. A process according to wherein the deposit-reducing chemicals includes a member selected from the group consisting of magnesium oxide claim 1 , magnesium hydroxide claim 1 , magnesium carbonate claim 1 , manganese oxide claim ...

PROCESS AND SYSTEM FOR SUBCRITICAL OXIDATION OF WATER-BORNE ORGANIC CONTAMINANTS

A highly efficient and effective process for destroying organic contaminants in wastewater streams, without the need for supercritical oxidation conditions, is provided. 1. A system for purifying a waste stream comprised of water , at least one organic contaminant and , optionally , at least one oxidizing agent comprising:i) a feed line for the waste stream;ii) a subcritical reactor vessel;iii) a heat exchanger; andiv) a pressure exchanger;wherein:a) the waste stream is provided to the reactor vessel by the feed line;b) the waste stream, when in the reactor vessel, is in a subcritical state;c) in the reactor vessel the at least one organic contaminant undergoes a catalyzed or uncatalyzed oxidative reaction with oxidizing agent effective to completely oxidize at least a portion of the organic contaminant, forming a purified effluent stream;d) the heat exchanger removes heat from the purified effluent stream for use in raising the temperature of the waste stream and recovers at least 80% of heat input; ande) the pressure exchanger removes mechanical energy from the effluent stream for use in raising the pressure of the waste stream and recovers at least 95% of such mechanical energy.2. The system of claim 1 , wherein the waste stream comprises at least one oxidizing agent.3. The system of claim 2 , wherein the at least one oxidizing agent includes at least one peroxide.4. The system of claim 2 , wherein the at least one oxidizing agent includes hydrogen peroxide.5. The system of claim 1 , wherein at least one oxidizing agent is introduced into the subcritical reactor vessel and the at least one oxidizing agent includes at least one of molecular oxygen or at least one peroxide.6. The system of claim 1 , wherein at least one catalyst capable of catalyzing oxidation of the at least one organic contaminant is present in the subcritical reactor vessel and is contacted with the waste stream.7. The system of claim 1 , wherein the heat exchanger recovers at least 95% of heat ...

Process and device for treating a waste lye

The invention relates to a process for treating a waste lye of a lye scrub using an oxidation reactor (), the waste lye and oxygen or an oxygen-containing gas mixture being introduced into the oxidation reactor () and steam being introduced into the oxidation reactor (). It is provided that the steam is at least partially introduced by means of a steam feeding device (), which has a cylindrical section () with a centre axis () and a wall (), the centre axis () being aligned perpendicularly, a number of groups of openings () being formed in the wall, each of the groups comprising a number of the openings (), and the number of openings () of each of the groups being arranged in one or more planes () that is or are in each case aligned perpendicularly to the centre axis (). A corresponding installation and also a corresponding oxidation reactor () are likewise the subject of the present invention. 110010010010111213121414141512. A process for treating a waste lye of a lye scrub by using an oxidation reactor () , the waste lye with oxygen or an oxygen-containing gas mixture being introduced into the oxidation reactor () and steam being introduced into the oxidation reactor () , characterized in that the steam is at least partially introduced by means of a steam feeding device () , which has one or more cylindrical sections () with in each case a centre axis () and in each case a wall () , the centre axis () being aligned perpendicularly , a number of groups of openings () being formed in the wall , each of the groups respectively comprising a number of the openings () , and the number of openings () of each of the groups being arranged in one or more planes () that is or are in each case aligned perpendicularly to the centre axis ().214151513. The process according to claim 1 , in which the openings () in each of the planes () are arranged such that they are distributed equidistantly around a circumference defined by a sectional line of the respective plane () with the ...

Smelt shattering method and apparatus

A smelt shattering apparatus includes an inlet orifice, an outlet orifice, and a fluidic pathway between the inlet orifice and the outlet orifice. A convergence divergence zone is located between the inlet orifice and the outlet orifice. In one illustrative construction, a first separable section includes the inlet orifice, and a second separable section includes the outlet orifice and a divergence zone of the convergence divergence zone. In some constructions, there may be a second outlet orifice in fluidic communication with the inlet orifice. To provide uniformity over the multiple shatter jets, the first outlet orifice may have a cross-sectional dimension and the second outlet orifice is located a distance of between about 4 and about 10 times of the cross-sectional dimension from the first outlet orifice.

METHOD FOR CONVERSION OF WET BIOMASS TO ENERGY

Disclosed herein is a method of converting waste, such as wet biomass, to a clean product and energy, including heat, and/or power. The disclosed method combines hydrothermal processing, also known as anaerobic hydrothermal carbonization, followed by wet air oxidation, adding sufficient oxygen to ensure rapid and complete destruction of organics. 1. A method , comprising:providing a waste mixture to a reaction chamber;heating the waste mixture while under pressure and anaerobic conditions to a temperature sufficient for hydrothermal carbonization;providing oxygen to the reaction chamber for a period of time sufficient for the waste mixture to undergo aqueous oxidation, thereby producing a clean product and energy and/or power, wherein the waste mixture is a wet biomass mixture and the wet biomass mixture is a wet biomass mixture of a liquid to biomass ratio of 9:1.2. (canceled)3. (canceled)4. The method of claim 1 , wherein the wet biomass mixture comprises water.5. The method of claim 1 , wherein the waste mixture comprises manure claim 1 , sludge claim 1 , food waste claim 1 , plant material such as trees claim 1 , peat claim 1 , plants claim 1 , refuse claim 1 , algae claim 1 , grass claim 1 , crops claim 1 , crop residue claim 1 , industrial waste claim 1 , food waste claim 1 , or a combination thereof.6. (canceled)7. The method of claim 5 , wherein heating the waste mixture to a temperature sufficient for hydrothermal comprises heating the reaction chamber to between 180° C. and 280° C. and allowing the reaction to occur for between 2 and 20 minutes.8. The method of claim 5 , wherein heating the waste mixture to a temperature sufficient for hydrothermal comprises heating the reaction chamber to between 230° C. and 250° C. and allowing the reaction to occur for between 2 and 20 minutes.9. The method of claim 5 , wherein providing oxygen to the reaction chamber for a period of time sufficient for the waste mixture to undergo aqueous oxidation comprises ...

BLACK LIQUOR VISCOSITY REDUCING AND ANTI-SCALE AGENT

The disclosure provides methods and compositions for reducing the viscosity of black liquor. Also provided are methods of inhibiting deposition of scale and methods of processing black liquor. In some embodiments, the compositions include a carboxylate-containing polymer and an inorganic salt. In some embodiments, the compositions include a carboxylate-containing polymer, an inorganic salt, and a surfactant. 1. A composition , comprising:a carboxylate-containing polymer;an inorganic salt; anda surfactant.2. The composition of claim 1 , wherein the carboxylate-containing polymer comprises a weight average molecular weight from about 500 Da to about 5 claim 1 ,000 Da.3. The composition of claim 1 , wherein the carboxylate-containing polymer is selected from the group consisting of a polymer comprising a polyacrylate claim 1 , a polymer comprising a sulfonate and a nonionic monomer claim 1 , and any combination thereof.4. The composition of claim 3 , wherein the polymer comprising the polyacrylate further comprises a phosphonate.5. The composition of claim 4 , wherein the phosphonate is selected from the group consisting of a vinyl phosphonate claim 4 , a vinyl diphosphonate claim 4 , an allyl phosphonate claim 4 , and any combination thereof.6. The composition of claim 3 , wherein the nonionic monomer is selected from the group consisting of acrylamide claim 3 , methacrylamide claim 3 , N-methyl (meth)acrylamide claim 3 , (meth)alkyl acrylamide claim 3 , N claim 3 ,N′-dimethyl (meth)acrylamide claim 3 , dialkyl (meth)acrylamide claim 3 , 3-(dimethylamino)propyl methacrylamide (DMAPMA) claim 3 , 3-(dimethylamino)propyl acrylamide (DMAPA) claim 3 , N-vinyl pyrrolidone (NVP) claim 3 , styrene claim 3 , an alkyl styrene claim 3 , a vinyl ether claim 3 , an allylic ether claim 3 , and any combination thereof.7. The composition of claim 1 , wherein the carboxylate-containing polymer is sodium polyacrylate.8. The composition of claim 1 , wherein the inorganic salt is ...

HEAT TRANSFER TUBE AND METHOD FOR MANUFACTURING A HEAT TRANSFER TUBE

The invention relates to a heat transfer tube () for falling film evaporation having a heating medium surface () to be heated by a heating medium, a falling film surface () to have spent liquor passing over it, and being made from an sheet metal material. The falling film surface of the heat transfer tube is equipped with a multitude of wire bumps (WB), each wire bump being spaced apart along the longitudinal axis (CC) of the heat transfer tube from a neighbouring wire bump by 3-300 mm, said wire bumps (WB) having a height (h) in the range 0.3 to 5.0 mm, a width (w) in the range 0.3-5.0 mm, and an inclination angle (a) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees. The invention also relates to a method for manufacturing said heat transfer tube. 199. A heat transfer tube () for falling film evaporation of spent liquor , the heat transfer tube () having:{'b': '21', 'a heating medium surface () arranged to be heated by a heating medium; and'}{'b': 20', '21', '20, 'a falling film surface () opposite and facing away from said heating medium surface (), which falling film surface () is arranged to have spent liquor containing lignin and other dissolved components from cellulosic material and/or inorganics from the cellulosic material and chemicals used passing over it as a falling film while evaporating solvent from the falling film and thus increasing the dry matter content; said heat transfer tube being made from a sheet metal material, e.g. an iron based high alloy stainless steel material with an alloy content above 16.00% for Chromium and above 1% for Nickel, preferably corresponding to corrosion resistant steel qualities at least like AISI 316 or AISI 304 characterized in that'}{'b': 20', '9', '9, 'the falling film surface () of the heat transfer tube () is equipped with a multitude of wire bumps (WB), each wire bump being spaced apart along the longitudinal axis (CC) of the heat transfer tube from a ...

METHOD FOR CONTROLLING CARRYOVER IN A CHEMICAL RECOVERY BOILER AND A CHEMICAL RECOVERY BOILER

A method for controlling carryover in a chemical recovery boiler. The method comprises feeding black or brown liquor to a furnace of the chemical recovery boiler through an injection gun to burn the black or brown liquor. The chemical recovery boiler comprises a bullnose, which narrows the furnace, and a first superheater, of which at least a part is arranged at a higher vertical level than the bullnose. The method comprises measuring information indicative of a spatial temperature distribution on a cross section of the furnace, wherein the cross section is above the injection gun and below the first superheater; determining primary information indicative of carryover using the information indicative of the spatial temperature distribution on the cross section of the furnace; and controlling a temperature of the black or brown liquor that is fed to the furnace using the primary information. In addition, a system for performing the method. 115-. (canceled)16. A method for controlling carryover in a chemical recovery boiler , the method comprising the steps of:feeding black or brown liquor to a furnace of the chemical recovery boiler through an injection gun to burn the black or brown liquor, wherein the chemical recovery boiler comprises a bullnose, which narrows the furnace, and a first superheater, of which at least a part is arranged at a higher vertical level than the bullnose,measuring information indicative of a spatial temperature distribution on a cross section of the furnace, wherein the cross section is above the injection gun and below the first superheater,determining primary information indicative of carryover using the information indicative of the spatial temperature distribution on the cross section of the furnace, andcontrolling a temperature of the black or brown liquor that is fed to the furnace using the primary information.17. The method of claim 16 , further comprising the steps of:determining the spatial temperature distribution on the cross ...

ARRANGEMENT OF HEAT RECOVERY SURFACES OF A RECOVERY BOILER

An arrangement in a recovery boiler having a furnace for combusting waste liquor and a flue gas duct including vertical flue gas channels, at least some of which are provided with heat recovery units for recovering heat from flue gases. The first flue gas channel downstream of the furnace is provided with a reheater and one of the following heat recovery units: an economizer or a boiler bank. The reheater and the second heat recovery unit are located one after the other in the horizontal incoming direction of the flue gas, so that in a flue gas channel the flue gas flows in a vertical direction from above downwards and heats the reheater and the second heat recovery unit simultaneously. The heat recovery elements of the reheater and the second heat recovery unit may be positioned side by side in a direction that is crosswise with respect to the horizontal incoming direction of the flue gas. 1. An arrangement in a recovery boiler having a furnace for combusting waste liquor for producing chemical smelt and flue gases and a flue gas duct comprising vertical flue gas channels , at least some of which are provided with heat recovery units for recovering heat from flue gases , said heat recovery units having a width of substantially that of the flue gas duct ,wherein a first flue gas channel of the vertical flue gas channels is downstream of the furnace and is provided with a reheater and a heat recovery unit, wherein the heat recovery unit is an economizer or a boiler bank, andwherein the reheater and the second heat recovery unit are arranged, with respect to a horizontal incoming direction of the flue gas one after the other so that in the first flue gas channel the flue gases flow in a vertical downwards direction through the reheater and the second heat recovery unit simultaneously and thereby heats the reheater and the second heat recovery unit simultaneously.2. The arrangement according to claim 1 , wherein the heat recovery unit is the economizer claim 1 , and ...

COMBUSTION OF HIGH SOLIDS LIQUID

A system for the combustion of high solids liquid to produce steam for the production of ethanol is disclosed. The system comprises a method for combusting high solids liquid. The method comprises supplying a stream of high solids liquid to a furnace; atomizing the stream of high solids liquid into the furnace; and distributing biomass fuel into the furnace. The stream of high solids liquid are combusted with the biomass fuel in the furnace. 1. A method for combusting a high solids liquid , comprising:supplying a stream of high solids liquid to a stoker grate boiler, wherein the stream of high solids liquid is atomized to form an atomized stream of high solids liquid; anddistributing biomass into the stoker grate boiler;wherein the atomized stream of high solids liquid is combusted in suspension above the biomass in the stoker grate boiler.2. The method of claim 1 , wherein the atomizing comprises employing one or more nozzles.3. The method of claim 2 , wherein the atomizing further comprises using an atomization fluid.4. The method of claim 3 , wherein the atomization fluid comprises compressed air.5. The method of claim 4 , wherein the one or more nozzles are positioned in a horizontal configuration.6. The method of claim 5 , wherein the one or more nozzles create a spray pattern and the spray pattern is a fan type pattern.7. The method of claim 6 , wherein the one or more nozzles comprise at least one flat fan nozzle.8. The method of claim 7 , wherein the nozzle pressure is within the range of 30 to 100 pound-force per square inch gauge claim 7 , inclusive.9. The method of claim 8 , further comprising selectively altering the rate at which the atomized high solids liquid is supplied.10. The method of claim 4 , wherein the one or more nozzles are positioned in a vertical configuration.11. The method of claim 10 , wherein the one or more nozzles create a spray pattern and the spray pattern is a fan type pattern.12. The method of claim 11 , wherein the one or more ...

Hydrothermal Carbonization of Sludge Including Recycling of a Wet-Oxidized Fraction

There is provided a method of hydrothermal carbonization of a sludge, comprising the steps of: preheating the sludge to obtain a preheated sludge; mixing the preheated sludge with a wet-oxidized fraction to obtain a reaction mixture; subjecting the reaction mixture to hydrothermal carbonization (HTC) in a reactor to obtain a HTC-treated sludge; separating a fraction from the HTC-treated sludge; and mixing the fraction with an oxidizing agent, such as oxygen gas, to obtain the wet-oxidized fraction, wherein the temperature of the fraction before the wet oxidation is at least 15° C. higher than the temperature of the preheated sludge. A corresponding system is also provided. 1. A method of hydrothermal carbonization of a sludge ,comprising the steps of:preheating the sludge to obtain a preheated sludge;mixing the preheated sludge with a wet-oxidized fraction to obtain a reaction mixture;subjecting the reaction mixture to hydrothermal carbonization (HTC) in a reactor to obtain a HTC-treated sludge;separating a fraction from the HTC-treated sludge; andmixing the fraction with an oxidizing agent to obtain the wet-oxidized fraction,wherein the temperature of the fraction before the wet oxidation is at least 15° C. higher than the temperature of the preheated sludge.2. The method according to claim 1 , wherein the total suspended solids (TSS) content of the fraction is lower than the TSS content of the HTC treated sludge.3. The method according to claim 1 , wherein the TSS content of the fraction is lower than 50 g/l.4. The method according to claim 1 , further comprising obtaining a second fraction from the HTC-treated sludge and subjecting the second fraction to flashing to obtain at least one steam fraction and a cooled fraction claim 1 , wherein the at least one steam fraction is used in the preheating step.5. The method according to claim 4 , wherein the total suspended solids (TSS) content of the second fraction is higher than the TSS content of the fraction that is ...

BOILER SYSTEM CONTROLLING FUEL TO A FURNACE BASED ON TEMPERATURE OF A STRUCTURE IN A SUPERHEATER SECTION

A boiler system is provided comprising: a furnace adapted to receive a fuel to be burned to generate hot working gases; a fuel supply structure associated with the furnace for supplying fuel to the furnace; a superheater section associated with the furnace and positioned to receive energy in the form of heat from the hot working gases; and a controller. The superheater section may comprise a platen including a tube structure with an end portion and a temperature sensor for measuring the temperature of the tube structure end portion and generating a signal indicative of the temperature of the tube structure end portion. The controller may be coupled to the temperature sensor for receiving and monitoring the signal from the sensor. 1. A boiler system comprising:a furnace adapted to receive a fuel to be burned to generate hot working gases;a fuel supply structure associated with said furnace for supplying fuel to said furnace; a platen including a tube structure with an end portion; and', 'a temperature sensor for measuring the temperature of the tube structure end portion and generating a signal indicative of the temperature of said tube structure end portion; and, 'a superheater section associated with said furnace and positioned to receive energy in the form of heat from the hot working gases, said superheater section comprisinga controller coupled to said temperature sensor for receiving and monitoring the signal from said sensor.2. The boiler system as set out in claim 1 , wherein said temperature sensor comprises a thermocouple.3. The boiler system as set out in claim 1 , wherein said controller monitors the signal from said temperature sensor for rapid changes in temperature of said tube structure end portion.4. The boiler system as set out in claim 3 , wherein rapid changes in temperature of said tube structure end portion comprises a monotonic increase in temperature of least about 25 degrees F. occurring over a time period of between about one to five minutes ...

DYNAMIC MIXING ASSEMBLY WITH IMPROVED BAFFLE DESIGN

A continuous dynamic mixing assembly includes a mixing chamber having an interior wall which is generally symmetrical about a central longitudinal axis. Flowable material is mixed in the mixing chamber. At least one inlet introduces the flowable material into the mixing chamber. At least one outlet discharges mixed flowable material from the mixing chamber. Axial baffles are connected to and extend along the interior wall for disrupting substantially circumferential material flow in the mixing chamber. Transverse baffles are connected to and extend from the interior wall transverse to the axis along a major dimension of the transverse baffles. A rotatable agitator includes agitator baffles extending transverse to the axis in alignment with respective transverse baffles, which forms gaps between the agitator baffles and the respective transverse baffles. The transverse baffles and the agitator baffles disrupt substantially axial fluid flow inside the mixing chamber while forcing the material through the gaps. Also featured is a method in which the mixing assembly is used. 1. A continuous dynamic mixing assembly , comprising:a mixing chamber having an interior wall which is substantially symmetrical about a central longitudinal axis;at least one inlet for introducing flowable material into said mixing chamber;axial baffles connected to the interior wall and extending along said axis along a length of said axial baffles, which disrupt substantially circumferential fluid flow in said mixing chamber;transverse baffles extending from the interior wall transverse to said axis along a major dimension of said transverse baffles; anda rotatable agitator including agitator baffles extending transverse to said axis at locations in alignment with respective said transverse baffles, forming gaps between said agitator baffles and said respective transverse baffles;wherein said transverse baffles and said agitator baffles are adapted to disrupt substantially axial fluid flow in ...

DETERMINING ONE OR MORE PROPORTIONAL PARTICLE GROUP SHARES IN FLUE GAS OF A RECOVERY BOILER

A method and system to determine one or more proportional particle group shares in flue gas of a recovery boiler () based on optical information gained from a flue gas sample. A processor () is used to read () a digital frame comprising the area under consideration, which represents at least a part of the surface of a sampler () kept in the flue gas flow of a recovery boiler. Particle group areas matching a color characteristic of the particle group comprised in the flue gas is determined () from the area under consideration. The joint area of the identified particle group areas is determined (), and the share of the joint area from the total area is determined () as the proportional particle group share of the particle group. 1. A method for determining one or more proportional particle group shares from flue gas of a recovery boiler , the method comprising:reading, with a processor, a digital frame including an area under consideration representing at least a part of a surface of a sampler in the flue gas flow of the recovery boiler for a predetermined period of time;identifying, with the processor, from the area under consideration one or more particle group areas matching a predetermined color characteristic of at least one particle group included in the flue gas of the recovery boiler;determining, with the processor, a joint area of the one or more particle group areas; anddetermining, with the processors, share of the joint area within a predetermined total area, wherein the share is a proportional particle group share of the at least one particle group.2. The method according to claim 1 , wherein the identifying the particle group area claim 1 , the determining the joint area claim 1 , and the determining the share of the joint area from the total area is carried out for at least two different particle groups in the flue gas of the recovery boiler.3. The method according to claim 1 , wherein the predetermined total area comprises a total area of the area ...

ACOUSTIC EMISSION SYSTEM AND METHOD FOR PREDICTING EXPLOSIONS IN DISSOLVING TANK

The present disclosure describes a system for predicting explosions in a dissolving tank. The system includes acoustic emission sensors placed in or around the dissolving tank. By filtering the recorded frequencies to the range which is most sensitive for desired explosions “fingerprints,” it is possible to predict a smelt influx before the smelt influx occurs as well as program response actions to prevent compromising explosions. 1. A system comprising:a dissolving tank adjacent to a recovery boiler,a smelt spout having a first end proximate a recovery boiler and a second end opposite the first end, the second end being proximate a dissolving tank, wherein the smelt spout is configured to receive a smelt from the recovery boiler and convey the smelt to the dissolving tank;an acoustic emission sensor having a reading end configured to detect acoustic emissions emanating from the smelt contacting a liquid in the dissolving tank, and wherein the acoustic emission sensor has a transducer in signal communication with the reading end, and wherein the transducer is configured to transduce the acoustic emissions into an initial electric signal;a pre-processor configured amplify, filter, and digitize the initial electric signal to produce a pre-processed signal having a frequency of greater than 20 KHz, wherein the pre-processor is disposed downstream of the transducer;a data processor in signal communication with the pre-processor, wherein the data processor is configured to transform the pre-processed signal with a transformation method to produce an output signal, wherein the output signal comprises a first set of processed waveforms representative of a first rate of smelt flow, and a second set of waveforms representative of a second rate of smelt flow, the second set of processed waveforms having amplitude peaks exceeding the first set of processed waveforms by more than 200% to comprise a pre-influx fingerprint.2. The system of further comprising the smelt disposed in ...

A METHOD AND A SYSTEM FOR ADJUSTING PH OF GREEN LIQUOR DREGS

The specification relates to a method and a system for adjusting pH of green liquor dregs. The method comprises contacting a slurry containing green liquor dregs () with flue gas (). The system comprises a recovery boiler () configured to burn black liquor to produce smelt, a smelt dissolving tank () configured to dissolve the smelt to produce green liquor comprising green liquor dregs, and a green liquor clarifier/filter () and/or a dregs filter () configured to separate a slurry containing green liquor dregs () from the green liquor. The system further comprises a vessel () configured to receive a slurry containing green liquor dregs () and a gas inlet () configured to convey flue gas () to be contacted with the slurry containing green liquor dregs (). 114-. (canceled)15. A method for adjusting pH of green liquor dregs , the method comprising:{'b': 100', '200', '300', '400', '500', '101', '201', '301', '401', '501, 'contacting a slurry containing green liquor dregs (, , , , ) with flue gas (, , , , ),'} [{'b': 100', '200', '300', '400', '500', '103', '104', '100', '200', '300', '400', '500, 'the slurry containing green liquor dregs (, , , , ) originates from a green liquor clarifier/filter () and/or a dregs filter () configured to separate the slurry containing green liquor dregs (, , , , ) from green liquor,'}, {'b': 100', '200', '300', '400', '500, 'a dry solids content of the slurry containing green liquor dregs (, , , , ) is from 1 to 40 wt. %,'}, {'b': 101', '201', '301', '401', '501, 'the flue gas (, , , , ) contains carbon dioxide, and'}, {'b': 101', '201', '301', '401', '501, 'a pH of the green liquor dregs after contacting with the flue gas (, , , , ) is between 7-9.'}], 'wherein16. The method according to claim 15 , wherein a temperature of the slurry containing green liquor dregs is at most 150° C. and a temperature of the flue gas is at most 400° C.17. The method according to claim 16 , wherein a dry solids content of the slurry containing green liquor ...

SLUDGE TREATMENT METHOD

The present invention relates to the treatment of sludge and, more particularly, to a method for recovering phosphate as a substantially solid component from a phosphate-containing sludge. Some embodiments of the invention relate to a method for recovering phosphate as a substantially solid component and aluminium as a liquid component from a phosphate-containing and aluminium-containing sludge. The method incorporates wet oxidation to decompose the organic components of the sludge to provide a residual sludge. The residual sludge comprises the insoluble components and, in some embodiments wherein the sludge comprises aluminium, the residual sludge further comprises suspended and/or soluble aluminium. 1. A method for treating a sludge , the method comprising subjecting a phosphate-containing and calcium-containing sludge to wet oxidation such that the pH of the residual sludge obtained after wet oxidation is at least about 8.2. A method as claimed in claim 1 , wherein the phosphate-containing and calcium-containing sludge is a phosphate-containing sludge comprising added calcium ions.3. A method for treating a sludge claim 1 , the method comprising subjecting a phosphate-containing claim 1 , calcium-containing claim 1 , and aluminium-containing sludge to wet oxidation such that the pH of the residual sludge obtained after wet oxidation is at least about 8.4. A method as claimed in claim 3 , wherein the phosphate-containing claim 3 , calcium-containing claim 3 , and aluminium-containing sludge is a phosphate-containing and aluminium-containing sludge comprising added calcium ions.5. A method as claimed in or claim 3 , wherein the sludge is obtained from the treatment of water or waste water with an aluminium compound.6. A method as claimed in any one of to claim 3 , wherein the aluminium content of the sludge is between about 0.5 g/L and about 1.5 g/L.7. A method as claimed in any one of to claim 3 , wherein the residual sludge comprises insoluble components ...

A PROCESS FOR MANUFACTURING AN UPGRADED BIO-OIL FROM BLACK LIQUOR

The present invention relates to a process for manufacturing an upgraded bio-oil derived from black liquor, comprising the following steps: —Providing black liquor, which comes from the pulp and paper manufacturing industry; —Subjecting black liquor to a pyrolysis treatment with formation of a pyrolyzed black liquor gas and a solid mass, which comprises char and salts; —Catalytic conversion of said pyrolyzed black liquor gas by contacting at least part of the latter with a bi-metallic modified zeolite catalyst with formation of the upgraded bio-oil, which comprises benzene, toluene, xylene (BTX), naphthalene and non-BTX products. 1. A process for manufacturing an upgraded bio-oil derived from a black liquor , comprising the following steps:providing the black liquor;subjecting the black liquor to a pyrolysis treatment and forming a pyrolyzed black liquor gas and a solid mass wherein the solid mass; comprises char and salts;forming the upgraded bio-oil, which comprises benzene, toluene, xylene (BTX), naphthalene, and non-BTX products, through catalytic conversion of the pyrolyzed black liquor gas by contacting at least part of the pyrolyzed black liquor gas with a bi-metallic modified zeolite catalyst.2. The process according to claim 1 , wherein a first metal and a second metal are incorporated into said catalyst.3. The process according to claim 1 , wherein said first metal is a transition metal selected from Group IIB of the periodic table and wherein said second metal consists of:a. one metallic element selected from the Lanthanide series of the periodic table having an atomic number ranging from 57 to 60; orb. a transition metal of Group IB of the periodic table; orc. a transition metal of Group VIB of the periodic table.4. The process according to claim 2 , wherein said support catalyst has a silica alumina molar ratio from 5 to 300.5. The process according to claim 2 , wherein the support catalyst has an internal pore size distribution in the range of 4.5 to ...

CATALYTIC SYSTEMS AND METHODS FOR PROCESS STREAM TREATMENT

Catalytic systems and methods for treating process streams are disclosed. Catalytic wet oxidation and hydrolysis techniques may be used to treat one or more undesirable constituents. Methane may be produced in connection with at least some embodiments. 1. A method of producing methane comprising:contacting an aqueous fluid comprising at least one undesirable constituent with a heterogeneous catalyst at a pressure from about 20 atm to about 240 atm and a temperature from about 150° C. to about 373° C. to hydrolysize the at least one undesirable constituent in the fluid and generate an amount of methane,wherein the heterogeneous catalyst comprises a member selected from the group consisting of ruthenium, nickel, cobalt, iron, and combinations thereof, and a solid support selected from the group consisting of alumina, silica, and a carbide.2. The process of claim 1 , wherein the pressure is from about 20 atm to about 40 atm.3. The process of claim 3 , wherein the temperature is from about 200° C. to about 260° C.4. The process of claim 1 , wherein the aqueous fluid comprises produced water.5. The process of claim 1 , wherein the at least one undesirable constituent comprises an organic compound.6. The process of claim 5 , wherein the organic compound comprises at least one of a kinetic hydrate inhibitor and a hydrolyzed polyacrylamide.7. The process of claim 1 , wherein the heterogeneous catalyst comprises ruthenium.8. The process of claim 1 , wherein the contacting is done in a treatment vessel claim 1 , wherein the method further comprises introducing a pressurized oxygen-rich gas to the aqueous fluid upstream of or within the treatment vessel claim 1 , and wherein the method further comprises oxidation of the at least one undesirable constituent in the aqueous fluid.9. A method of producing methane comprising:introducing a produced water comprising a chemical oxygen demand to a treatment vessel;subjecting the produced water to a pressure from about 20 atm to about ...

TREATMENT OF SPENT CAUSTIC WASTE

Systems and methods are provided for the treatment of caustic wastewater. Specifically, systems and methods are provided for combining refinery spent caustic and ethylene spent caustic solutions and treating the combined spent caustic mixture using a wet air oxidation process.

CATALYTIC SYSTEMS AND METHODS FOR PROCESS STREAM TREATMENT

Catalytic systems and methods for treating process streams are disclosed. Catalytic wet oxidation and hydrolysis techniques may be used to treat one or more undesirable constituents such as HPAM and KHI. Methane may be produced in connection with at least some embodiments. 133-. (canceled)34. A method of producing methane comprising:subjecting an aqueous fluid comprising at least one undesirable constituent to catalytic conditions effective to hydrolysize the at least one undesirable constituent in the fluid and generate an amount of methane.35. The process of claim 34 , wherein the subjecting is done at a pressure of from about 20 atm to about 240 atm.361. The process of claim claim 34 , wherein the subjecting is done at a temperature of from 150° C. to about 373° C.37. The process of claim 36 , wherein the subjecting is done at a temperature of at least about 200° C.38. The process of claim 34 , wherein the aqueous fluid comprises produced water.39. The process of claim 34 , wherein the at least one undesirable constituent comprises an organic compound.40. The process of claim 39 , wherein the organic compound comprises at least one of a kinetic hydrate inhibitor and a hydrolyzed polyacrylamide.41. The process of claim 34 , wherein the catalytic conditions comprise contact of the aqueous fluid with a heterogeneous catalyst.42. The process of claim 41 , wherein the heterogeneous catalyst includes a solid support selected from the group consisting of alumina claim 41 , silica claim 41 , and a carbide.43. The process of claim 41 , wherein the heterogeneous catalyst comprises a member selected from the group consisting of ruthenium claim 41 , nickel claim 41 , cobalt claim 41 , iron claim 41 , and combinations thereof.44. The process of claim 43 , wherein the heterogeneous catalyst comprises ruthenium.45. The process of claim 34 , wherein the subjecting is done in a treatment vessel claim 34 , wherein the catalytic conditions further comprise introducing a pressurized ...

CHEMICAL RECOVERY BOILER

A chemical recovery boiler (), including a furnace (), comprising a front wall (), a back wall (), and the back wall () comprising a nose arch (). The boiler further comprises at least one superheater () arranged in upper part of the furnace (), and a screen pipe system (), comprising an obliquely arranged screen pipe section () positioned before/under the at least one superheater () in the furnace (). The obliquely arranged screen pipe section () comprises screen pipes () ascending (i) either from the front wall () to the back wall (), and arranged to turn back in a turn () from the back wall () and extend obliquely upwards from the back wall (), or (ii) from the back wall () to the front wall (), and arranged to turn back in a turn () from the front wall () and extend obliquely upwards from the front wall (). The screen pipe system () further comprises a vertically arranged screen pipe section () extending from the obliquely arranged screen pipe section (). The screen pipes () of the vertically arranged screen pipe section () are arranged to extend parallel with the at least one superheater () in upper part of the furnace (). 1. A chemical recovery boiler , the boiler comprising: a front wall,', 'a back wall, the back wall comprising a nose arch, and', 'at least one superheater arranged in an upper part of the furnace, and a screen pipe system comprising:', (i) from the front wall to the back wall, and arranged to turn back in a turn from the back wall and extend obliquely upwards from the back wall, or', '(ii) from the back wall to the front wall, and arranged to turn back in a turn from the front wall and extend obliquely upwards from the front wall, and, 'an obliquely arranged screen pipe section positioned before/under the at least one superheater in the furnace, the obliquely arranged screen pipe section comprising screen pipes ascending either, 'a vertically arranged screen pipe section extending from the obliquely arranged screen pipe section, wherein ...

PROCESS AND APPARATUS FOR WET OXIDATION OF WASTES

A new wet oxidation process of wastes, specifically of mixtures of at least two, liquid (wastewaters) and dense (sludges), pumpable wastes is described. An apparatus useful for a wet oxidation process of this type is also described. 1. A wet oxidation process for decontaminating a suspension of multi-stream wastes comprising the steps of:a) feeding a stream of a pumpable suspension of at least two wastes, having a total dry matter (TDM) comprised between 5 and 18%, preferably between 7 and 15%, and a COD comprised between 10,000 and 150,000 mg/I, preferably between 30,000 and 150,000 mg/I, into a reactor at a temperature of at least 70° C., and at a pressure comprised between 8 bar and 100 bar, preferably between 30 bar and 65 bar, wherein said suspension is fed into the reactor by means of at least one first mixing ejector;b) feeding a gas phase stream comprising oxygen and high-pressure steam into said reactor at a pressure comprised between 8 bar and 100 bar, preferably between 30 bar and 65 bar, and at a temperature comprised between 150° C. and 315° C., preferably between 200° C. and 260° C., wherein said gas phase is fed into the reactor by means of at least one second mixing ejector;c) placing in contact said suspension stream and said gas phase stream into said reactor, so as to flow said streams in countercurrent;d) extracting the decontaminated suspension, after oxidation, from the lower bottom of the reactor;e) extracting the exhaust gases from the upper bottom of the reactor.2. The process according to claim 1 , wherein said reactor operates at a pressure comprised between 8 bar and 100 bar claim 1 , preferably between 30 bar and 65 bar claim 1 , and at a temperature comprised between 150° C. and 300° C. claim 1 , preferably between 200° C. and 260° C.3. The process according to or claim 1 , wherein said pumpable suspension of at least two wastes is fed from an inlet positioned on the upper bottom of the reactor.4. The process according to any one of to ...

METHOD AND MEANS FOR RECOVERY BOILER OUTAGE

A method and means for washing a floor of a recovery boiler, including mixing by mixing devices wash water in which remaining salt on recovery boiler furnace floor dissolves, and where wash water is sucked from a wash water pool on the furnace floor into suction openings of the mixing devices for implementing said mixing. 1. A method in recovery boiler outage , comprising:mixing by mixing devices wash water in which remaining salt on recovery boiler furnace floor dissolves, in which methodwash water is sucked from a wash water pool on the furnace floor into suction openings of the mixing devices for implementing said mixing.2. A method according to claim 1 , wherein the sucked wash water is discharged back into amongst the remaining wash water through discharge openings of the mixing devices for implementing said mixing.3. A method according to claim 1 , wherein sucked wash water is replaced by guiding fresh wash water onto furnace floor for implementing said mixing.4. A method according to claim 1 , wherein said mixing is implemented by mixing devices placed on the floor of the recovery boiler.5. A method according to claim 1 , wherein said mixing is implemented by ejectors with gas or fluid as pressure medium.6. A method according to claim 1 , wherein wash water is sucked from a wash water pool bottom.7. A method according to claim 1 , wherein the wash water pool top layer is mixed with the wash water pool bottom layer.8. A method according to claim 1 , wherein a wash water circulation is formed on the furnace floor by directing the mixing devices in accordance with a desired direction of circulation.9. A method according to claim 1 , comprising:removing during recovery boiler outage before washing the floor of the recovery boiler a part of the salt from the furnace in a molten form.10. A method according to claim 1 , comprising:guiding wash water into recovery boiler furnace via water passages arranged in the recovery boiler for washing the floor of the recovery ...

NON-SCALING WET AIR OXIDATION SYSTEM AND PROCESS

There is provided a system and a method for regenerating a material that reduce the incidence of scaling due to scale forming contaminants. The method may include reducing a temperature of a treated material exiting a wet air oxidation unit in a scale reducing heat exchanger prior to delivery of the treated material to a second heat exchanger which heats a source waste material comprising a scale forming contaminant therein with heat from the first treated material to form a heated waste material comprising the scale forming contaminant. 124-. (canceled)25. A treatment system comprising:a wet air oxidation unit for receiving a heated waste material comprising a spent carbon material and a scale forming contaminant and discharging a first treated material comprising a regenerated carbon material;a scale reducing heat exchanger in fluid communication with the wet air oxidation unit for receiving the first treated material from the wet air oxidation unit and for discharging a second treated material comprising regenerated carbon and having a reduced temperature relative to the first treated material; anda second heat exchanger in fluid communication with the scale reducing heat exchanger for receiving the second treated material, the second heat exchanger further arranged to receive a source waste material comprising the spent carbon material and the scale forming contaminant and discharge the heated waste material for delivery to the wet air oxidation unit;wherein the heated waste material comprises an increased temperature relative to the source waste material due to heat exchange with the second treated material.26. The system of claim 25 , wherein the second treated material comprises a temperature less than a solubility temperature limit of the scale forming contaminant at a given concentration of the scale forming contaminant.27. The system of claim 26 , wherein the scale reducing heat exchanger is effective to reduce a temperature of the first treated material ...

METHOD AND SYSTEM FOR TREATING SPENT PULPING LIQUOR

A system () for treating spent pulping liquor () comprising lignin to provide green liquor () is disclosed. The system () comprises an evaporator (), a recovery boiler (), at least one filter (), and a green liquor plant (). The evaporator () concentrates a first stream () of the spent pulping liquor () to provide a concentrated pulping liquor (). The recovery boiler () incinerates the concentrated pulping liquor () to provide a smelt (). The at least one filter () filters a second stream () of the spent pulping liquor () to remove lignin therefrom to provide a permeate (). The green liquor plant () is for dissolving the smelt () from the recovery boiler () in the permeate () from the at least one filter () to provide green liquor (). Also disclosed is a method for treating spent pulping liquor () to provide green liquor (). 1. A system for treating spent pulping liquor comprising lignin to provide green liquor , the system comprising:an evaporator for concentrating a first stream of the spent pulping liquor to provide a concentrated pulping liquor;a recovery boiler for incinerating the concentrated pulping liquor to provide a smelt;at least one filter for filtering a second stream of the spent pulping liquor to remove lignin therefrom to provide a permeate; anda green liquor plant for dissolving the smelt from the recovery boiler in at least a part of the permeate from the at least one filter to provide green liquor.2. The system of claim 1 , wherein the at least one filter comprises:a first filter for filtering the second stream of the spent pulping liquor to provide a first retentate and a first permeate; anda second filter for filtering the first permeate to provide a second retentate and a second permeate;wherein the second permeate is used to dissolve the smelt in the green liquor plant.3. The system of claim 2 , wherein the first filter is a membrane filter with a molecular weight cut-off between 0.5 and 20 kDa and the second filter is a membrane filter with ...

RECOVERY BOILER STARTUP BURNER ASSEMBLY

A startup burner assembly for a recovery boiler, the startup burner assembly includes a housing having a burner end and a second end distal to the burner end; a main fuel conduit disposed within the housing; and high-pressure air conduits disposed within the burner end of the housing. The high-pressure air conduits include angled air injection nozzles configured to direct high-pressure air exiting the burner end of the startup burner assembly in a rotational direction.

WET AIR OXIDATION OF A SPENT MATERIAL WITH SPENT CAUSTIC ADDITION

There are disclosed processes and systems wet air oxidation systems and processes which provide for the combined treatment of a spent caustic with a spent material (e.g., spent carbon, spent biological material, or combinations thereof) to produce a regenerated spent material stream. 1. A treatment process comprising:combining an amount of spent material with an amount of a spent caustic to generate a combined waste stream; andsubjecting the combined waste stream to a wet air oxidation process to produce a regenerated material stream.2. The treatment process of claim 1 , wherein the spent material comprises a member selected from the group consisting of spent activated carbon claim 1 , spent biological material claim 1 , and combinations thereof.3. The treatment process of claim 1 , wherein the first waste stream is derived from a wastewater treatment process which utilizes a member from the group consisting of activated carbon claim 1 , biological material claim 1 , and combinations thereof.4. The treatment process of claim 3 , further comprising recycling the regenerated material stream to the wastewater treatment process.5. The treatment process of claim 1 , wherein a ratio of the amount spent material to the amount of spent caustic is from 1:1 to 1:100 by volume.6. The treatment process of claim 1 , wherein the wet air oxidation process is carried out at a temperature of 250° C. or less with a residence time of at least about 30 minutes.7. The treatment process of claim 1 , wherein the wet air oxidation process is carried out at a temperature of 200° C. or less with a residence time of at least about 1 hour.8. A treatment system comprising:a wet air oxidation unit; andwithin the wet air oxidation unit, a combined wastewater stream comprising a spent caustic and a spent material, wherein the wet air oxidation unit is configured to carry out a wet air oxidation process on the combined waste stream at elevated temperature and pressure in the presence of oxygen to ...

ARRANGEMENT AND METHOD IN SODA RECOVERY BOILER

An arrangement and a method in a soda recovery boiler, in a furnace () of which recovery boiler there are arranged screen tubes () and which recovery boiler comprises a second pass () in which is arranged at least one superheater (′). The second pass () is arranged for being cooled with cooling medium coming from the screen tubes (). 114-. (canceled)15. An arrangement in a soda recovery boiler , in a furnace of which recovery boiler there are arranged screen tubes and which recovery boiler comprises a second pass ,in which second pass is arranged at least one superheater,the second pass being cooled with cooling medium coming from the screen tubes.16. The arrangement of claim 15 , comprising a second pass ash hopper which comprises front wall cooling pipes and/or rear wall cooling pipes and that said cooling pipes are connected to receive cooling medium from the screen tubes.17. The arrangement of claim 16 , wherein the second pass ash hopper comprises an ash hopper supply header that is arranged in the lower part of the ash hopper and connected with a connection pipe to the screen tubes to receive cooling medium and to distribute the cooling medium into said front wall cooling pipes and/or rear wall cooling pipes.18. The arrangement of claim 16 , wherein the cooling pipes of the ash hopper form a gastight front and/or rear wall of the ash hopper and that higher up they are arranged to provide grid tubes so as to allow flue gases to pass through.19. The arrangement of claim 18 , wherein the cooling pipes form a gastight ceiling for the second pass and that they are connected via a collection header to a drum.20. The arrangement of claim 17 , wherein the cooling pipes of the ash hopper form a gastight front and/or rear wall of the ash hopper and that higher up they are arranged to provide grid tubes so as to allow flue gases to pass through.21. The arrangement of claim 20 , wherein the cooling pipes form a gastight ceiling for the second pass and that they are ...

PROCESS FOR TREATING BLACK LIQUOR

The invention discloses a process for treating black liquor comprising pyrolysing black liquor in a fluidized bed reactor to obtain solid particles and pyrolysed black liquor gas, heating the solid mass, returning the heated solid mass to the fluidized bed reactor for use in the pyrolysis reaction; condensing the pyrolysed black liquor gas to obtain a condensate and recover heat and a residual gas released during condensation for heating the solid mass to a predetermined temperature for that is required for the pyrolysis. 1. Process for treating black liquor comprising the steps of:{'b': '100', 'providing a fluidized bed reactor () comprising a solid mass that comprises solid particles, wherein the solid mass has a temperature and heat capacity such that black liquor pyrolyses and such that the solid particles remain fluidizable;'}{'b': 10', '11, 'providing black liquor () and letting the black liquor flow into the fluidized bed reactor to provide a pyrolysis reaction of the black liquor and to obtain solid particles and pyrolysed black liquor gas (), wherein the solid particles form part of the solid mass;'}{'b': 21', '23, 'separating the solid mass () from the pyrolysed black liquor gas ();'}{'b': '21', 'heating at least a first part of the solid mass ();'}{'b': '31', 'returning the heated solid mass () to the fluidized bed reactor for use in the pyrolysis reaction;'}{'b': '51', 'treating the pyrolysed black liquor gas in a second reactor to obtain treated pyrolysed black liquor gas ();'}{'b': '51', 'optionally absorbing the treated pyrolysed black liquor gas ();'}{'b': 51', '82', '83', '84, 'condensing the treated pyrolysed black liquor gas (), which was optionally absorbed, to obtain a condensate (), heat released during condensation and a residual gas ( and );'}{'b': 83', '84, 'recover the heat and/or the residual gas released during condensation or absorption ( and ).'}2213003133. The process according to claim 1 , wherein the heating of the at least first ...

COMBUSTION OF STREAMS DERIVED FROM HOT WATER EXTRACTION OF WOOD MATERIAL

Various techniques are described for enhanced combustion of hot water extraction (HWE) derived liquor. For example, the HWE derived liquor can be pre-treated prior to introduction into a combustion chamber. The pre-treatment can include subjecting HWE derived liquor to filtration to remove suspended solids, evaporation to produce a first stage concentrated HWE liquor; additional concentration to produce a second stage concentrated HWE liquor; additional filtration to remove additional suspended solids; and pre-heating to produce a preheated HWE liquor. The preheated HWE liquor can be atomized and combined with pre-heated combustion air supplied into a combustion chamber to effect combustion of the HWE derived liquor. 1. A process for combusting hot water extraction (HWE) derived liquor , comprising:subjecting HWE derived liquor to filtration to remove suspended solids and produce a solids-depleted HWE derived liquor;supplying the solids-depleted HWE derived liquor to an evaporator system to produce a first stage concentrated HWE derived liquor;supplying the first stage concentrated HWE derived liquor to a concentrator or evaporator to produce a second stage concentrated HWE derived liquor;subjecting the second stage concentrated HWE derived liquor to additional filtration to remove additional suspended solids and produce a filtered concentrated HWE derived liquor;pre-heating the filtered concentrated HWE derived liquor to produce a preheated HWE derived liquor;subjecting the preheated HWE derived liquor to atomization to produce an atomized HWE derived liquor;pre-heating air to produce heated combustion air; andsupplying the atomized HWE derived liquor and the heated combustion air into a combustion chamber to effect combustion of the HWE derived liquor.2. The process of claim 1 , wherein the filtration and/or the additional filtration is performed using a strainer type separator claim 1 , a basket separator claim 1 , a belt filter and/or a drum filter.3. The ...

STEAM PLASMA ARC HYDROLYSIS OF OZONE DEPLETING SUBSTANCES

A two step process for the destruction of a precursor material using a steam plasma in a three zone reactor wherein the precursor material is hydrolyzed as a first step in the high temperature zone of the reactor, followed by a second step of medium temperature oxidation of the reactant stream in the combustion zone of the reactor where combustion oxygen or air is injected and immediate quenching of the resulting gas stream to avoid the formation of unwanted by-products. A related apparatus includes a non transferred direct current steam plasma torch, an externally cooled three zone steam plasma reactor means for introducing the precursor material into the plasma plume of the plasma torch, means for introducing the combustion air or oxygen into the combustion zone, means for exiting the reactant mixture from the reactor and means for quenching the reactant mixture located at the exit end of the reactor. 1. A two step process for the destruction of a precursor material using steam plasma in a reactor , wherein the precursor material is hydrolyzed as a first step in a high temperature zone of the reactor , followed by a second step of medium temperature oxidation of the reactant stream in a combustion zone of the reactor where combustion oxygen or air is injected and immediate quenching of the resulting gas stream to avoid the formation of unwanted byproducts.2. A process according to claim 1 , wherein the steam plasma is created by a non transferred direct current steam plasma torch claim 1 , whereby an electric arc created between metallic electrodes and superheated steam forms a high temperature plasma plume at an exit end of the plasma torch claim 1 , which is rich in reactive hydrogen and hydroxyl ions.3. A process according to claim 2 , wherein the plasma torch uses a small amount of an inert gas such as nitrogen claim 2 , argon or helium or a mixture thereof as the shroud gas to protect the back electrode from excessive oxidation.4. A process according to claim ...

CONTINUOUS METHOD FOR THE PRECIPITATION OF LIGNIN FROM BLACK LIQUOR

In a method for the continuous precipitation of lignin from black liquor black liquor is provided so as to flow as a pressurized flow in a reactor with a dwell time of less than 300 s. An acidifying agent selected from the group of carbon dioxide, acid and their combinations is led to the flow at one or more feeding sites to lower the pH of black liquor. The pH is allowed to decrease by the effect of the acidifying agent in the pressurized flow to the precipitation point of lignin, the pressure of the pressurized flow is abruptly released, and lignin particles are separated from black liquor. 1. An apparatus for the continuous precipitation of lignin from black liquor , comprising a reactor and means for leading an acidifying agent into the reactor , wherein the reactor is a continuous reactor that includes a pressurized portion wherein black liquor is arranged to flow as a pressurized flow , the pressurized portion includes one or more acidifying agent feeding sites that are connected to a source of acidifying agent to lead the acidifying agent to the pressurized flow at said one or more acidifying agent feeding sites , and the pressurized portion ends at a pressure release valve that is arranged to release the pressure of the pressurized flow.2. The apparatus according to claim 1 , wherein claim 1 , disposed after the acidifying agent feeding site in the reactor claim 1 , there is a static mixer that is arranged to provide turbulent mixing of the flow.3. The apparatus according to claim 1 , wherein the acidifying agent and/or a secondary flow separated from the pressurized flow are arranged to be led to the pressurized flow at the feeding site at such a pressure as to provide turbulent mixing of the flow.4. The apparatus according to claim 1 , wherein it comprises a filter that is arranged to separate lignin particles from black liquor.5. The apparatus according to claim 4 , wherein the filter is a pressure filter.6. The apparatus according to wherein claim 4 , ...

METHOD OF RECOVERING PULPING CHEMICALS FROM DISSOLVED ASH HAVING A HIGH CARBONATE CONTENT

A method of recovering wood pulping chemicals from black liquor produced in a wood pulping process where the process entails burning the black liquor in a recovery boiler to form ash containing high levels of carbonate as well as sodium, potassium and chloride. The ash is dissolved to form a dissolved ash solution that is directed to a first stage crystallization unit that concentrates the dissolved ash solution and which results in the precipitation of sodium sulfate and sodium carbonate. Thereafter the concentrated dissolved ash solution is directed to a second stage crystallization unit which adiabatically cools the concentrated dissolved ash solution to form a glaserite slurry and a purge stream that is rich in chloride. In order to reduce the tendency of sodium carbonate and burkeite to crystallize in the second stage crystallization unit and to encourage pure glaserite to crystalize in the crystallizer, the method entails mixing a sulfate source, such as sodium sulfate or sulfuric acid, to the concentrated dissolved ash solution upstream of the crystallizer. 1. A method of recovering wood pulping chemicals from black liquor produced in a wood pulping process in a pulp mill comprising:burning the black liquor in a recovery boiler and forming ash containing carbonate, sodium, potassium and chloride;dissolving at least a portion of the ash to form a dissolved ash solution;directing the dissolved ash solution to a first stage crystallization unit and concentrating the dissolved ash solution and precipitating sodium carbonate and burkeite and forming a concentrated dissolved ash solution including the precipitated sodium carbonate and burkeite;directing at least a portion of the concentrated dissolved ash solution to a downstream second stage crystallization unit and further concentrating the concentrated dissolved ash solution to form glaserite crystals which are directed from the second stage crystallization unit in a glaserite slurry;separating the glaserite ...

Method for selective separation of products at hydrothermal conditions

Sodium and borate ions are separated in supercritical water by addition of dissolved CO 2 to cause precipitation of carbonates and the formation of boric acid. Carbonates and boric acid are then recovered as separate products.

Continuous fractionation of crude tall oil to refined tall diesel

The present invention describes a process for continuous fractionation of CTO (crude tall oil) to RTD (refined tall diesel), said process comprising:- when removing a stream of TOP (tall oil pitch) the CTO is fed though at least two evaporation zones arranged in series so that one stream of CTO is fed from a first evaporation zone to a second evaporation zone, wherein a TOP stream is produced and fed from the second evaporation zone, wherein a first vapor stream is produced within the first evaporation zone and a second vapor stream is produced within the second evaporation zone and wherein there is a temperature difference of at least 10°C between the first vapor stream and the second vapor stream; and - feeding the first vapor stream and the second vapor stream into a subsequent fractionation column to produce a stream of RTD from the fractionation column, wherein the first vapor stream and the second vapor stream are being fed to different positions, relative to the column height, in the fractionation column, which different positions in the fractionation column are separated by packing means.

Foerfarande foer taeckande av kemikaliefoerlusterna vid massaframstaellning

Method and apparatus for controlled chemical reactions

A method and apparatus for effecting accelerated chemical reactions at elevated temperatures and pressures including wet oxidation of materials in waste streams. An influent waste stream or first reactant is directed through a long tubular coil within a containment vessel with a second reactant being added to the influent. The waste stream includes gas and liquid components. The flow rates for the reactants of the waste stream are set to cause plug or slug flow of the waste stream through the tubular coil. The curvature of the coil tends to induce a secondary flow in the liquid component such that the liquid component tends to travel in a spiral thereby providing more intimate mixing of the reactants. The containment vessel may be partitioned to form a series of successive compartments to permit different temperature gradients to be applied to successive sections of the tubing coil across its length. Alternatively, a tube in tube construction for the tubular coil permits counter current heat exchange between the waste stream within the inner tube and a returning stream. Multiple injection and extraction points are provided along the path of the tubular coil to permit gas, liquid or solid reactants to be added or extracted as desired. The tubular coil provides an excellent environmental container for the reaction stream and is extremely suitable for temperature control to permit continuous heat input, autogenic operation and continuous heat extraction.

Oxidatie van organisch materiaal in superkritisch water.

Constructed wetland structure for sewage treatment

A constructed wetland structure for sewage treatment is provided to improve purification capacity of sewage and remarkably reduce construction period of the constructed wetland. A constructed wetland structure for sewage treatment is constructed in an excavated part(10) which is formed by excavating the ground to a fixed depth, and of which the bottom is flatly hardened. The excavated part has a gabion(10a) in which stones are stacked, and which is formed on a side face thereof to prevent collapse of the side face of the excavated part, an inlet(10b) and an outlet(10c) respectively installed in one side and the other side thereof to flow sewage in and out through the inlet and outlet, and water proofing pads installed on the side face and bottom face thereof to prevent infiltration of sewage into soil by which the excavated part is formed. The sewage flown in the excavated part flows in the excavated part after the sewage has been stored and settled in a settling tank(11) installed at the inlet side of the excavated part. Some of solids contained in the sewage are settled while the flown-in sewage is stored in the settling tank for a predetermined time. Sludge settled from the sewage is removed through a valve(11a) installed on a bottom part of the settling tank.

Herstellung von Zellstoff nach dem S.A.P.-Verfahren.

Production of pulp by the soda-anthraquinone process (SAP) with recovery of the cooking chemicals

A process for the production of cellulose from wood and annual plants is provided where the digesting liquor contains free caustic soda, sodium salts of alkyl benzenesulfonic acids, and of aromatic or aliphatic carboxylic acids. By the addition of anthraquinone or its derivatives to the digesting liquor, the delignification is improved. Anthraquinone is resistant to wet oxidation and can be reintroduced into the digesting process. The solubility and, therefore, the effectiveness of anthraquinone is improved by the use of sulfonic acid salts. For the recovery of the digesting chemicals contained in the black liquor, solubilized liquor is precipitated with mineral acid or carbon dioxide and the hemicelluloses are separated by ultra filtration. The resins are separated by extraction with the residual organic compounds, except for the sulfonates and carboxylics, being burned in an aqueous phase with air and/or oxygen. The solution of chemicals containing no further wood decomposition products can, by caustification of the carbonates, be transformed into caustic soda and after partial crystallization of the aliphatic carboxylics used for the cycle of pulp production. The sodium acetate isolated by crystallization can, by membrane electrolysis, be split into acetic acid and sodium hydroxide. The caustic soda is reintroduced to the digesting process, while the acetic acid is treated separately.

一种采用催化湿式氧化法的淤泥处理设备

本发明涉及一种采用催化湿式氧化法的淤泥处理设备，涉及淤泥处理设备技术领域，包括冲高温高压釜和密封盖，所述高温高压釜的正面左侧设置有电热炉，且高温高压釜的左方外接有氧气罐，所述密封盖安置于高温高压釜的上端，且密封盖与高温高压釜之间通过螺栓连接，所述氧气罐的右侧上端镶嵌有进气管。本发明的有益效果是：通过搅拌轴利用旋转轴在高温高压釜内转动，则可以带动搅拌杆对淤泥进行搅拌，这样既能够使催化剂与淤泥快速均匀混合，并使淤泥充分快速与氧气接触，则可以加快淤泥的催化氧化，同时使淤泥均与与热量接触，就能够使淤泥进行快速的处理，使将污泥中的有机物和还原性无机物快速氧化成二氧化碳和水及少量固体残渣。

Method and arrangement for conducting underground chemical reactions

The problem of conducting chemical reactions at elevated temperatures and pressures, such as in the wet oxidation of a waste stream, without excessive expenditures of energy is solved by the method and apparatus for effecting accelerated chemical reactions utilizing a reactor (15) extending into a vertical hole (16) in the earth and having an outer flow passage (21) receiving influent fluid from a supply (38) and supply lines (31 and 33) pumped with air by a pressure pump (29). The fluid undergoes an accelerated oxidation in the hole giving off the products of reaction, heat, and an effluent fluid which flows up an inner flow passage (22) to a settling tank (41) and/or other discharge lines (44, 42). Apparatus for control of temperature, pressure and flow rate are also provided to maximize reaction rates and minimize power requirements.

Installation and method of energy production at cellulose plant

FIELD: machine building. ^ SUBSTANCE: boiler-utiliser of waste of alkali liquor consists of system of water/steam circulation equipped with super-heaters. Also the said system of circulation is coupled with a steam turbine containing a stage of high pressure and a fire chamber for waste alkali liquor combustion and for production of furnace gases. Furnace gases pass through an upper part of the system of circulation. The system of water/steam circulation in the boiler-utiliser is equipped with an intermediate super-heater for intermediate steam super-heating after the stage of high pressure of the turbine. The intermediate super-heater has the first and the second parts. The first part is positioned in a flow of furnace gases formed in the furnace; the said first part is connected with a channel for steam outlet of the turbine high pressure stage. Also here is disclosed the method of production of energy on a cellulose pant equipped with the boiler-utiliser. ^ EFFECT: reduced corrosion and increased output of power at energy production in cellulose plant. ^ 19 cl, 1 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 399 709 (13) C2 (51) МПК D21C 11/06 (2006.01) D21C 11/12 (2006.01) F01K 7/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007143180/12, 21.04.2006 (24) Дата начала отсчета срока действия патента: 21.04.2006 (73) Патентообладатель(и): АНДРИТЦ ОЙ (FI) R U (30) Конвенционный приоритет: 22.04.2005 US 60/673,779 25.04.2005 US 60/674,288 (72) Автор(ы): САВИХАРЬЮ Кари (FI), СИМОНЕН Йорма (US), АРПАЛАХТИ Олли (FI), КОЙВИСТО Ласси (FI) (43) Дата публикации заявки: 10.06.2009 2 3 9 9 7 0 9 (45) Опубликовано: 20.09.2010 Бюл. № 26 (56) Список документов, цитированных в отчете о поиске: US 2004200222 A1, 14.10.2004. JP 61202002 А, 06.09.1986. US 2004011484 A1, 22.01.2004. WO 03104547 A1, 18.12.2003. RU 2032126 C1, 27.03.1995. 2 3 9 9 7 0 9 R U (86) Заявка PCT: FI 2006/ ...

Patent JPS5921655B2

Method for solids separation in a wet oxidation type process

The present invention relates to a novel aqueous-phase oxidizer and solids separator reactor. More particularly, the invention relates to a two zone pressure vessel in which precipitates and other solids fall or are sprayed from a supercritical temperature super zone into a lower temperature sub zone. The feed material may consist of various waste products which are subsequently oxidized in the super zone of the pressure vessel. The resultant brine or slurry which is found at the lower temperature sub zone of the vessel is removed via a pipe and disposed of accordingly.

Regenerative boiler regeneration surface device

FIELD: heating equipment. SUBSTANCE: group of inventions relates to regenerative boiler device. Device comprises a furnace for combustion of waste liquor and a flue gas duct, comprising vertical channels of flue gas, some of them are equipped with heat recovery units for heat recovery from flue gases. Flue gas channel first after the furnace is equipped with a heater and one of the following heat recovery units: an economizer or a boiler accumulator. Heater and second heat recovery unit are located one after another in horizontal direction of flue gas inlet so that in flue gas channel flue gas flows in vertical direction from top to bottom and simultaneously heats heater and second heat regeneration unit. According to the other device, the heater heat regeneration elements and the second heat regeneration unit are located one next to the other in the direction, which is transverse to horizontal direction of flue gas inlet. EFFECT: technical result is creation of device for heat recovery from flue gases formed during spent liquor combustion. 10 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 734 370 C2 (51) МПК F22B 21/02 (2006.01) F23G 7/04 (2006.01) F22G 7/14 (2006.01) D21C 11/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F22B 21/02 (2020.02); F23G 7/04 (2020.02); F22G 7/14 (2020.02); D21C 11/04 (2020.02) (21)(22) Заявка: 2018130821, 25.01.2017 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): АНДРИТЦ ОЙ (FI) Дата регистрации: 15.10.2020 Приоритет(ы): (30) Конвенционный приоритет: 28.01.2016 FI 20165056 (43) Дата публикации заявки: 28.02.2020 Бюл. № 7 (45) Опубликовано: 15.10.2020 Бюл. № 29 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 28.08.2018 2 7 3 4 3 7 0 (56) Список документов, цитированных в отчете о поиске: US 3324837 A, 13.06.1967. US 5299534 А, 05.04.1994. SU 1288433 A1, 07.02.1987. SU 1508045 A1, 15.09.1989. US 2012102955 A1, 03.05.2012. R U 25. ...

Oxidized white liquor production method

一种将白液中的硫化钠氧化成硫酸钠，由白液来制取氧化白液的方法。按该方法，在接触过程中，在至少110℃的温度和氧气与水蒸汽总压不小于9.2大气压下，使含氧气的气体与白液相接触反应。

Method and system for high alpha dissolving pulp production

사전 가수분해 크라프트 공정(PHKP)과 연관하여 사용된 본 발명의 펄프 처리를 위한 방법은, 반응 용기에 목재 칩 또는 유사한 재료를 추가하는 단계와, 사전 가수분해를 수행하는 단계와, 제1 양의 백액에 뒤이어 백액으로 선택적으로 농화된 저온 가성 추출 알칼리 여과액과 같은 다른 용제로 혼합물을 중화하는 단계를 포함한다. 중화 유체는, 선택적으로 백액으로 농화된, 알칼리 여과액 및 고온 흑액을 포함하는 쿠킹 유체로 치환된다. 쿠킹 유체는 비교적 높은 유효 알칼리 농도를 가질 수 있다. 쿠킹된 펄프는 선택적인 범위 내에서 카파값 및 매우 낮은 잔류 헤미셀룰로오스를 나타낼 수 있다. A method for pulping treatment of the present invention used in connection with a pre-hydrolysis kraft process (PHKP) comprises the steps of adding a wood chip or similar material to a reaction vessel, performing pre-hydrolysis, And neutralizing the mixture with another solvent such as a low temperature caustic extracted alkali filtrate which is selectively concentrated with a white liquid following the white liquor. The neutralizing fluid is optionally replaced with a cooking fluid comprising an alkaline filtrate and a high-temperature black liquid, which is concentrated to a white liquid. The cooking fluid may have a relatively high effective alkali concentration. The cooked pulp may exhibit a kappa value and a very low residual hemicellulose within an optional range.

A kind of sludge-dewatering compound conditioning agent and application process thereof

本发明提供了一种污泥脱水复合调理剂及其应用方法。该污泥脱水复合调理剂包括芬顿试剂或/和类芬顿试剂以及骨架构建体，芬顿试剂或/和类芬顿试剂与骨架构建体的重量比为1∶0.05～300；骨架构建体为粉体。其应用方法包括的步骤有：向污泥浆中添加芬顿试剂或/和类芬顿试剂，搅拌混合，并进行氧化反应；向添加有加芬顿试剂或/和类芬顿试剂的污泥浆中添加骨架构建体，搅拌混合。本发明污泥脱水复合调理剂通过芬顿试剂或/和类芬顿试剂与粉体的骨架构建体协同作用，能有效的破坏污泥中胞外聚合物，降低有机质的可压缩性，能大幅度提高污泥脱水性能的污泥脱水复合调理剂。其应用方法工序简单，条件易控，缩短了污泥的脱水时间，可实现污泥的规模化处理。

Patent JPS55500161A

Treatment method of titanium tetrachloride-containing waste liquid

本发明属于工业废液处理领域，涉及一种含四氯化钛废液的处理方法。该方法包括以下步骤：(1)使所述含四氯化钛废液与至少一种芳香烃接触，得到混合物，所述芳香烃的通式为C n H 2n‑6 ，20≥n≥7；(2)将所述混合物在蒸馏装置中进行蒸馏，所述蒸馏装置顶部分离出含四氯化钛物料，底部得到蒸馏残液；(3)任选地，将所述蒸馏残液与醇类化合物混合进行醇解反应，得到醇解物；(4)将步骤(2)得到的蒸馏残液和/或步骤(3)得到的醇解物进行焚烧处理。本发明提供了一种简便实用的方法，所用高沸点溶剂不会对催化剂的制备产生不良影响，使得整体蒸馏操作更易实施，降低了运行成本。

Patent JPH0112557B2

Method and device for processing liquid flows on pulp mill

FIELD: technological processes.SUBSTANCE: method of processing liquid flows on a pulp mill, wherein the device includes a wood preparation unit, an unbleached pulp production unit in which the cooking, washing, sorting and oxygen delignification stages are carried out to produce cellulose pulp, a bleaching unit for bleaching the resulting cellulose pulp, a chemical recovery unit, a pulp-drying machine, a recovery boiler generating boiler blowdown water, an evaporating unit generating condensate, a sewage treatment plant and a water treatment plant. The method includes directing water from at least one of the following sources: alkali filtrate of EOP-bleach filtrate (alkaline extraction using oxygen and peroxide) from the bleaching unit, water from the second settler of the sewage treatment plant, to at least one of the following stages: the preparation of wood in the wood preparation unit, as water for irrigation of the gravitation table of the sewage treatment plant.EFFECT: improvement of the method.12 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 636 560 C2 (51) МПК D21C 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2014136218, 12.03.2013 (24) Дата начала отсчета срока действия патента: 12.03.2013 Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: 12.03.2012 FI 20125265 (45) Опубликовано: 23.11.2017 Бюл. № 33 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 13.10.2014 (86) Заявка PCT: (73) Патентообладатель(и): ЮПМ-Кюммене Корпорейшн (FI) FI 2013/050272 (12.03.2013) (87) Публикация заявки PCT: (56) Список документов, цитированных в отчете о поиске: US 20100243184 A1, 30.09.2010. RU 2 6 3 6 5 6 0 Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ" 2211836 C1, 10.09.2003. US 5470480 A1, 28.11.1995. WO 2013135958 A2, 19.09.2013.. (54) СПОСОБ И УСТРОЙСТВО ДЛЯ ОБРАБОТКИ ЖИДКИХ ПОТОКОВ НА ЦЕЛЛЮЛОЗНОМ ЗАВОДЕ (57) Реферат: Данное изобретение относится к ...

Continuous process for controlled evaporation of black liquor

Described is a process for concentrating weak black liquor to form strong black liquor, said process comprising: a) preconcentrating said weak black liquor; b) heating said preconcentrated weak black liquor in a heating zone under sufficient pressure to prevent said preconcentrated weak black liquor from boiling in said heating zone; c) passing said preconcentrated weak black liquor, having at least one volatile component, into an evaporation zone through one or more orifices; d) applying pressure in said evaporation zone that is lower than the vapor pressure of said preconcentrated weak black liquor as it is passed into said evaporation zone, which allows for flash evaporation of at least a portion of said at least one volatile component of said preconcentrated weak black liquor from said preconcentrated weak black liquor to form strong black liquor; e) adjusting heat in said heating zone., pressure in said heating zone and pressure in said evaporation zone to allow for evaporation of an amount of said at least one volatile component from said preconcentrated weak black liquor to form said strong black liquor; and f) collecting said strong black liquor from said evaporation zone.

Method of removing ammonium ions and organic carbon from waste waters

FIELD: waste water treatment. SUBSTANCE: waste water with organic carbon to ammonium ions molar ratio (0.3-4):1 is treated by 1-10 wt % of nitric acid at 100-350 C under pressure. EFFECT: enhanced treatment efficiency. ОтОДОГсС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ "” 2107 040 (13) СЛ 60 МК © 02Е 1/72 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 93052695/25, 24.11.1993 (30) Приоритет: 25.11.1992 ОЕ Р 4239487.2 (46) Дата публикации: 20.03.1998 (71) Заявитель: Басф АГ (ОЕ) (72) Изобретатель: Карл Герхард Бауер[ОЕ], Томас Папкалла[ОЕ], Ульрих Канне[ОЕ], Петер Штопс[ОЕ] (56) Ссылки: ГЕ, заявка, 2262754, кл. С02Е 1/72, 1981. (73) Патентообладатель: = Басф АГ (ОЕ) ® (54) СПОСОБ ОЧИСТКИ СТОЧНЫХ ВОД ОТ АММОНИЕВЫХ ИОНОВ И ОРГАНИЧЕСКОГО УГЛЕРОДА © (57) Реферат: Мольное соотношение органического Использование: очистка сточных вод от углерода к аммонийному азоту составляет 0,3 < аммониевых ионов и органического углерода. 1 -4 1. Количество азотной кислоты Сущность изобретения: сточные воды составляет 1 - 10 мас.% от массы сточных > обрабатывают — азотной — кислотой при вод. 6 з.п.ф-лы, 2 табл. ^ температуре 100 - 350°С под давлением. © == Сс' — 0 ОтОДОГсС ПЧ Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ 12) АВЗТКАСТ ОЕ 1МУЕМТОМ (19) ВИ "” 2107 040‘ (51) 1. СИ. С 02Е 1/72 13) СЛ (21), (22) АррИсаНоп: 93052695/25, 24.11.1993 (30) Рпогйу: 25.11.1992 ОЕ Р 4239487.2 (46) Рае ог рибИсаНоп: 20.03.1998 (71) АррИсапе: ВазТАС (0Е) (72) пуетщог. — Кап Сегквага ВачегОЕ], Тота$ Рарка!а[ОЕ], ЧГикИ Каппе[ОЕ], Р4ег ЭНорз[ОЕ] (73) Ргорпеюг: ВазГАС (О0Е) (54) МЕТНООВ ОЕ ВЕМОМШМС АММОМШОМ 10М№$ АМО ОКСАМ!С САКВОМ ЕКОМ \МАЗТЕ ММАТЕВ$ (57) АБзасЕ: НЕЕО: мае маег геантет. ЗУВЗТАМСЕ: мае маег м огдатс сагроп 10 аттопит юп5 тоаг гашо (0.3-4):1 15 Чеаеа Бу 1-10 м % 91 пгс аса аЁ 100-350 С ипдег ргеззиге. ЕРЕЕСТ: еппапсед Шгеатет ейсепсу. 2107040 С1 КО ОтОДОГгсС ПЧ ГЭ Изобретение относится к очистке сточных вод, в частности к способу очистки сточных ...

Arrangement and process for oxidizing an aqueous medium

The invention concerns an arrangement for oxidizing an aqueous medium containing organic and/or oxidizable inorganic substances at high temperature and high pressure. In a reactor the aqueous medium is exposed to oxygen in order to reduce the chemical oxygen requirement of the aqueous medium to a predetermined desired level. The arrangement comprises: a tubular reactor (1); at least one inlet for the introduction of the aqueous medium (2) and an oxygenous gas or an oxygen-releasing solution (3); means (4, 10, 11, 12) for dispersing bubbles of the gaseous oxygen in the aqueous medium; and at least one outlet for removing the treated aqueous medium (5) from the tubular reactor (1). The individual sections (I, II, III) are arranged one behind the other such that the degree of back-mixing of a downstream section (II, III) is in each case at most as great as the respective degree of back-mixing in the sections (II or III) upstream of the section (I or II), and at least in the section (II or III) which is the furthest downstream the degree of back-mixing is less than in the section (I) which is furthest upstream.

Water treatment device

본 발명은 수조 내부에서 흡입한 오수를 수조 내부의 슬러지를 향하여 분사하는 오수토출배관라인; 및 컴프레서와 연결되면서 상기 오수토출배관라인에 대응 구비되고 압축공기를 슬러지에 분사하는 공기토출배관라인; 을 포함하는 수처리 장치를 제공한다.

Soda recovery boiler during downtime washing method and devices

FIELD: sanitation equipment.SUBSTANCE: soda recovery boiler floor washing method and devices, including the washing water mixing with mixing devices, in which the remaining salt on the soda recovery boiler furnace floor is dissolved, and in which the washing water is drawn from the washing water pool on the furnace floor to the mixing devices suction inlets for the said mixing performance.EFFECT: proposed are the soda recovery boiler during downtime washing method and devices.11 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 682 529 C1 (51) МПК D21C 11/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК D21C 11/12 (2018.08) (21)(22) Заявка: 2018101807, 05.11.2015 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Варо Теоллисууспалвелут Ои (FI) Дата регистрации: 19.03.2019 (56) Список документов, цитированных в отчете о поиске: WO 2008046959 A1, 24.04.2008. US 6287415 B1, 11.09.2001. WO 2010063875 A1, 10.06.2010. JP 2000039133 A, 08.02.2000. US 2008047587A1, 28.02.2008. 16.07.2015 FI 20155558 (45) Опубликовано: 19.03.2019 Бюл. № 8 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 16.02.2018 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/009519 (19.01.2017) C 1 C 1 FI 2015/050762 (05.11.2015) 2 6 8 2 5 2 9 Приоритет(ы): (30) Конвенционный приоритет: Адрес для переписки: 121087, Москва, а/я 33, Курышеву В.В. (54) СПОСОБ И СРЕДСТВА ДЛЯ ПРОМЫВКИ СОДОРЕГЕНЕРАЦИОННОГО КОТЛА ВО ВРЕМЯ ПРОСТОЯ (57) Реферат: Способ и средства для промывки пола растворяется и при котором промывочная вода содорегенерационного котла, включающий всасывается из бассейна с промывочной водой смешивание смешивающими устройствами на полу топки во всасывающие отверстия промывочной воды, при котором остающаяся смешивающих устройств для выполнения соль на полу топки содорегенерационного котла указанного смешивания. 2 н. и 9 з.п. ф-лы, 8 ил. R U 2 6 8 2 5 2 9 R U 05.11.2015 (72) Автор(ы): КАРЬЮНЕН ...

METHOD AND SYSTEM FOR DESULFURIZATION OF GASES OF A PULP FACTORY, HAVING AN UNFAMOUS ODOR

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2006 111 219 (13) A (51) ÌÏÊ D21C 11/06 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2006111219/12, 04.10.2004 (71) Çà âèòåëü(è): ÎÉ ÌÅÒÑß-ÁÎÒÍÈß ÀÁ (FI) (30) Êîíâåíöèîííûé ïðèîðèòåò: 03.10.2003 FI 20031438 (43) Äàòà ïóáëèêàöèè çà âêè: 20.11.2007 Áþë. ¹ 32 (72) Àâòîð(û): ÐÅÉËÀÌÀ Èñìî (FI), ÀÍÍÀËÀ Êàéñó (FI) (87) Ïóáëèêàöè PCT: WO 2005/033404 (14.04.2005) Àäðåñ äë ïåðåïèñêè: 191186, Ñàíêò-Ïåòåðáóðã, à/ 230, "ÀÐÑÏÀÒÅÍÒ", ïàò. ïîâ. Â.Â.Äîùå÷êèíîé R U (57) Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá äåñóëüôóðèçàöèè õèìè÷åñêèõ ïðîäóêòîâ ïðîèçâîäñòâåííîãî öèêëà ñóëüôàòíîöåëëþëîçíîãî çàâîäà, âêëþ÷àþùèé ñáîð êîíöåíòðèðîâàííûõ ãàçîâ ñ íåïðè òíûì çàïàõîì, ñîäåðæàùèõ ñîåäèíåíè ñåðû, è ñæèãàíèå ñîáðàííûõ ãàçîâ äë îêèñëåíè ñîåäèíåíèé ñåðû, îòëè÷àþùèéñ òåì, ÷òî êîíöåíòðèðîâàííûå ãàçû ñ íåïðè òíûì çàïàõîì ñæèãàþò ïðè âîçäóøíîì èíäåêñå ìåíåå åäèíèöû â ïåðâîì àãðåãàòå äë ñæèãàíè ñ èñïîëüçîâàíèåì ñïîñîáà Êëàóñà òàêèì îáðàçîì, ÷òî ïî ìåíüøåé ìåðå ñóùåñòâåííà ÷àñòü ñîåäèíåíèé ñåðû îêèñë åòñ äî ýëåìåíòàðíîé ñåðû, ïðè÷åì ïî ìåíüøåé ìåðå 10 ìîë.% ñîåäèíåíèé ñåðû, ïðîøåäøèõ ÷åðåç ñèñòåìó Êëàóñà, çàòåì ñæèãàþò â óñòðîéñòâå äë ñæèãàíè âòîðîãî àãðåãàòà äë ñæèãàíè , è ýëåìåíòàðíóþ ñåðó âûäåë þò â æèäêîì èëè òâåðäîì ñîñòî íèè. 2. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî âîçäóøíûé èíäåêñ ïðè ñæèãàíèè ñîñòàâë åò îêîëî 0,4-0,9. 3. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî òåìïåðàòóðà ñãîðàíè ñîñòàâë åò îêîëî 14001800°Ñ. 4. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ñïîñîá äåñóëüôóðèçàöèè èíòåãðèðîâàí â ñèñòåìó îòðàáîòàííûõ ãàçîâ ñóëüôàòíî-öåëëþëîçíîãî çàâîäà. 5. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ñåðó êîíäåíñèðóþò èç ãàçîâ ñ íåïðè òíûì çàïàõîì ïîñëå ñæèãàíè ãàçîâ. 6. Ñïîñîá ïî ï.5, îòëè÷àþùèéñ òåì, ÷òî äë êîíäåíñàöèè ñåðû èñïîëüçóþò âîäó èç êîòëîâ èëè âîäó èç îõëàæäàþùåãî öèêëà ñóëüôàòíî-öåëëþëîçíîãî çàâîäà. 7. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ÷àñòü ñîáðàííûõ ãàçîâ ñ íåïðè òíûì çàïàõîì íàïðàâë þò äë ...

Oxidizing treating method for organic matter in super critical water

Process of burning black liquor in multiface furnace and device for its realization

FIELD: burning of fuels. SUBSTANCE: air for burning is fed through holes placed at same level by jets of at least two sizes. Air holes in walls of furnace in direction from angle of furnace to middle of its walls. Thanks to it depth of penetration of corresponding jets of air flowing through holes enhances. Depth of penetration is maintained constant at different operating conditions. EFFECT: enhanced efficiency of burning of fuels. 15 cl, 5 dwg б0Уб00с ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2 009 404 ' 13) Сл Е 23 1 7/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4743685/06, 09.04.1990 (30) Приоритет: ЕИ1О.04.89/1685 (30) Приоритет: 10.04.1989 Е| 89 1685 (46) Дата публикации: 15.03.1994 (71) Заявитель: А.Альстрем Корпорейшн (Е1) (72) Изобретатель: Лииса Симонен[ЕП (73) Патентообладатель: А.Альстрем Корпорейшн (Е!) (54) СПОСОБ СЖИГАНИЯ ЧЕРНОГО ЩЕЛОКА В МНОГОГРАННОЙ ТОПКЕ И УСТРОЙСТВО ДЛЯ ПОДАЧИ ВОЗДУХА В ТОПКУ (57) Реферат: Использование: для ввода воздуха для горения в виде струй в топку, например, содорегенерационного — котла. Сущность изобретения: воздух для горения вводят через отверстия для воздуха, расположенные, по существу, на одном и том же уровне, струями, по крайней мере, двух размеров. Отверстия для воздуха в стенках топки выполнены разными по размерам таким образом, что их гидравлические диаметры увеличиваются в направлении от углов топки к середине стенок топки, благодаря чему глубина проникновения соответственных струй воздуха, текущего через отверстия, увеличивается. Глубину проникновения воздушных струй поддерживают постоянной при разных режимах нагрузки. 2 с. и 12 3. п. ф-лы. 5 ил. 2009404 С1 КО б0Уб00с ПЧ Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) ВИ” 2 009 404 ' 13) СЛ 12) АВЗТКАСТ ОЕ 1МУЕМТОМ (21), (22) АррИсаНоп: 4743685/06, 09.04.1990 (30) Рпошу: РУ1О.04.89/1685 (30) Рпогйу: 10.04.1989 [| 89 1685 (46) Рае оГ рибИсаНоп: 15.03.1994 (71) АррИсапе: А.АГ'ЗТВЕМ КОКРОКЕЗНМ (|) ...

Apparatus for drying sludge

본 발명은 슬러지 건조장치 및 이를 이용한 슬러지 건조방법에 관한 것으로 상세하게는 원슬러지와 건조된 건조슬러지가 함께 투입되어 혼합되는 혼합기; 상기 혼합기에서 배출된 혼합슬러지가 유입되고 유입된 혼합슬러지에 공기를 송급하여 혼합슬러지를 분사하는 공기송급기; 상기 공기송급기에 연결되고 원추형으로 이루어진 챔버와, 상기 챔버의 바닥에 구비되고 역원추형으로 이루어진 스로틀인렛과, 상기 챔버의 중심부에 위치하는 내경관을 포함하여 이루어져 내부로 분사된 혼합슬러지와 공기를 선회유동시켜 혼합슬러지를 건조시키는 사이클론 건조기; 상기 사이클론 건조기에 연결되고 원추형으로 이루어져 내부로 유입된 공기는 상부로 배출되고 건조슬러지는 하부로 분리하는 사이클론 분리기; 상기 사이클론 분리기의 하부에 연결되고 유입된 건조슬러지를 이송하면서 가열하여 재건조시키는 근적외선 컨베이어; 상기 근적외선 컨베이어에서 유출되는 건조슬러지를 입자의 크기에 따라 두 종류로 분급하여 각각 배출하는 분급기;로 이루어지되, 상기 분급기에 배출된 건조슬러지 중에 상대적으로 작은 입자를 가진 건조슬러지를 회수하여 상기 혼합기에 재공급하는 것을 특징으로 하며, 이에 의하면 건조슬러지의 중량이 크게 감소하고 함수율이 현저하게 저감되며, 슬러지 처리 용량당 에너지 절감효과가 월등하다.

Patent RU2018130821A3

`”ВУ“” 2018130821`” АЗ Дата публикации: 28.04.2020 Форма № 18 ИЗИМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2018130821/12(050185) 25.01.2017 РСТ/Е12017/050039 25.01.2017 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 20165056 28.01.2016 В Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) УСТРОЙСТВО РЕГЕНЕРАЦИОННЫХ ПОВЕРХНОСТЕЙ РЕГЕНЕРАЦИОННОГО КОТЛА Заявитель: АНДРИТЦ ОЙ, Е! 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. п см. Примечания [ ] приняты во внимание следующие пункты: р [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) Е228В 21/02 (2006.01) Е220 7/14 (2006.01) Е23С 7/04 (2006.01) 021С 11/4 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) Е22В 21/00-Е22В 21/40; Е 220 3/00; Е22С 5/00 - Е220 5/04; Е22С0 7/00-Е228 7/14; О21С 11/00-221С 11/14; Е236 7/04 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): Езрасепес, РАТЕМТСОРЕ, Рабеагсв, КОРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- ...

Sludge hydrothermal oxidization reaction system and method with function of product reflux pretreatment

本发明公开了一种带产物返流预处理的污泥水热氧化反应系统及方法，属于市政污泥处理领域，水热氧化后生成的气相产物由反应器顶部引出，将其中反应后剩余的氧和生成的二氧化碳去除后，通入污泥预处理罐，直接与污泥接触将其预热；液相产物分流部分回流至污泥预处理罐；蒸汽和热水在搅拌作用下预热污泥，解决系统回收热量不足以预热污泥至进料温度的问题；剩余的液相产物减压闪蒸的方法，回收闪蒸汽送至预处理污泥进料管路伴热，同时闪蒸除氧后的液相进入下游换热设备回收余热。通过以上措施，可实现回收系统高温物料热量预热污泥、缓解溶解氧腐蚀换热器等问题，降低系统投资，提高系统能量利用率和经济性。

Supercritical water oxidation reaction system for obtaining heat supplemented by auxiliary fuel

本发明公开了一种利用辅助燃料补给热量的超临界水氧化反应系统，包括反应器、与反应器端盖上物料入口连通的物料装置、与反应器端盖上氧化剂入口连通的氧化剂装置、与反应器底部固体盐出口连通的脱盐装置，以及燃料补给装置和冷却水装置。通过辅助燃料对系统进行能量补给，从而减少因电加热器设置带来的较高设备投入和运行成本；采用单程回热，在保证有效回收系统热量的前提下，减少系统复杂程度从而降低设备投入，并能够提高系统操作和运行的稳定性；提出了合理的脱盐方案，在反应过程中同时脱除反应过程中生成的固态盐和溶解性盐。使其可以广泛应用于高浓度难生化降解的有机废水/垃圾渗滤液等污染物的无害化处理过程。

Method in a boiler, particularly a chemical recovery boiler

The invention relates to a method for converting the capacity of a boiler, particularly a soda recovery boiler. When operating in the first efficiency range, the boiler is used in a way that the open space (10) is kept in radiation communication with the fire box (6) and empty, using the first embodiment of the water circulation system connected to the boiler cylinder (18) in connection with the ascending tubes (15, 16), and in the second efficiency range higher than the first efficiency range, the boiler is used by placing at least one part (8L) expanding the basic superheater arrangement (8) in the open space (10) and/or by forming the second embodiment (19, 23) of the water circulation system connected to the boiler cylinder (18) in connection with the ascending tubes (15, 16), placed partially in the fire box (6) and having an efficiency exceeding that of the first embodiment.

Arrangement in recovery boiler

Method of monitoring and inhibition of sediment formation in evaporator and concentrator of pulp plant

FIELD: woodworking industry. SUBSTANCE: method comprises attaching the device for monitoring of precipitation of black liquor to the evaporator or the concentrator of pulp plant and measurement of thermal conductivity on the outer surface of this device. The control unit interprets the measured thermal conductivity and determines the level of sediment formation. If the sediment formation level higher than the predetermined level, the control unit can add the composition inhibiting sediment formation to the waste liquor. The composition inhibiting sediment formation comprises (i) one or more fatty acids of vegetable origin, and (ii) one or more compounds selected from the group consisting of polyacrylic acid, polymaleic acid, a copolymer of acrylic acid and maleic acid, and any of their combinations. EFFECT: improvement of the method. 10 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 493 310 (13) C2 (51) МПК D21C 11/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009140473/12, 09.05.2008 (24) Дата начала отсчета срока действия патента: 09.05.2008 (73) Патентообладатель(и): Налко Компани (US) (43) Дата публикации заявки: 20.06.2011 Бюл. № 17 2 4 9 3 3 1 0 (45) Опубликовано: 20.09.2013 Бюл. № 26 (56) Список документов, цитированных в отчете о поиске: ЕР 0517453 A1, 09.12.1992. CA 1307878 C, 29.09.1992. EP 0334398 A2, 27.09.1989. US 4783314 A, 08.11.1988. US 2005025659 A1, 03.02.2005. US 6250140 B1, 26.06.2001. 2 4 9 3 3 1 0 R U (86) Заявка PCT: US 2008/063152 (09.05.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 10.12.2009 (87) Публикация заявки РСТ: WO 2008/141121 (20.11.2008) Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ" (54) СПОСОБ МОНИТОРИНГА И ИНГИБИРОВАНИЯ ОБРАЗОВАНИЯ ОТЛОЖЕНИЙ В ВЫПАРНЫХ АППАРАТАХ И КОНЦЕНТРАТОРАХ ЦЕЛЛЮЛОЗНОГО ЗАВОДА (57) Реферат: Предложен способ мониторинга и ингибирования выпадения в осадок и осаждения отложений из отработанного ...

Process for the preparation of synthesis gas from black liquor

本发明涉及由黑液制备合成气的方法。一调整在高温黑液气化器中产生的合成气组成的方法，包括如下步骤：(a)在所述气化器中，通过鼓入气体和任选地雾化气流，从黑液产生气化器流出流；(b)任选地，用气体流对所述气化器流出流进行淬火以形成气体淬火流出流；(c)用水流对步骤(a)的气化器流出物或步骤(b)的气体淬火流出流进行淬火以形成原始合成气；(d)进一步冷却和净化和分离原始合成气，以形成具有合适的H 2 /CO比例的纯化的未经处理的合成气；(e)在合成工段，将纯化合成气部分转化为二甲醚，至少生产DME产品气流和经处理的富含氢气的排出流；(f)将单支或组合的经处理的或未经处理的合成气的分流进行分流并再循环至步骤(a)和/或(b)；和将步骤(e)中进一步产生的CO 2 副产品流部分或全部再循环至步骤(a)和/或步骤(b)。

Method for oxidation with humid air using regenerated catalyst

FIELD: chemistry. SUBSTANCE: inventions can be used to decompose pollutants in waste water and process streams of public and industrial pollution sources. To realise the method, an aqueous mixture containing an undesirable component is brought into contact with a soluble copper catalyst and an oxidant at temperature from 240°C to critical temperature and pressure from 30 atm to 275 atm to form an oxidised aqueous mixture, a portion of the catalyst is deposited by adjusting pH of the oxidised aqueous mixture from 6 to 12 in the presence of oxygen at temperature of about 80°C in form of solid copper oxide particles. When recycling the catalyst, pH is controlled in the range from 6 to 12 to dissolve solid copper oxide particles. The apparatus has a wet oxidation unit (206), an aqueous mixture source (202), a copper catalyst source dissolved in the aqueous mixture (224) lying between the aqueous suspension source and the wet oxidation unit, a pH sensor, an oxidised aqueous mixture pH control unit (212), a separator (220) configured to deposit part of the copper catalyst in form of copper oxide and lying on the outlet side of the wet oxidation unit (206) and a line for recirculating the recycled catalyst (224). EFFECT: inventions provide 95% efficiency of purifying aqueous mixtures from different pollutants which can be decomposed by oxidation and reduce power consumption of the apparatus. 31 cl, 6 dwg, 6 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 458 865 (13) C2 (51) МПК C02F 1/74 (2006.01) C02F 1/66 (2006.01) B01J 38/48 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009131754/05, 22.01.2008 (24) Дата начала отсчета срока действия патента: 22.01.2008 (73) Патентообладатель(и): СИМЕНС ИНДАСТРИ, ИНК. (US) R U Приоритет(ы): (30) Конвенционный приоритет: 22.01.2007 US 60/885,966 (72) Автор(ы): ФЕЛЧ Чад Л. (US) (43) Дата публикации заявки: 27.02.2011 Бюл. № 6 2 4 5 8 8 6 5 (45) Опубликовано: 20.08.2012 ...

Oxidation method of substances dissolved or suspended in aqueous solution

Method and system for high alpha dissolving pulp production

PROCEDURE FOR CONCENTRATING AN ALKALIC END

Waste liquid incineration boiler of recycling smoke adherence protection

本发明涉及废液处理技术领域，具体涉及一种再循环烟气贴壁保护的含盐有机废液焚烧锅炉。所述锅炉包括依次相连的下行绝热炉膛、辐射冷却室、水平烟道和尾部烟道，以及设置于辐射冷却室、水平烟道和尾部烟道之上的吹灰装置；尾部烟道设置有Ⅰ级、Ⅱ级省煤器等。本发明的发明点在于：将Ⅱ级省煤器出口处的部分烟气再循环，作为贴壁保护烟气进入下行绝热炉膛和辐射冷却室；下行绝热炉膛和辐射冷却室之间连接处为V形夹角，V形夹角的侧壁为水冷壁，水冷壁上铺设有耐火材料，V形夹角的底部为液态排渣装置。本发明所述的焚烧锅炉，很好地解决了锅炉壁面腐蚀、排渣不畅、NOx排放量过高等问题，具有结构简单、使用方便、处理效率高、节能省水等优点。

The method of regeneration of spent sulphite liquor

METHOD AND DEVICE FOR PROCESSING LIQUID FLOWS AT A PULP FACTORY

1. Способ обработки жидких потоков на целлюлозном заводе, при котором устройство включает:- блок (10) подготовки древесины,- блок (20) получения небеленой целлюлозы, включающий стадии варки, промывки, сортировки и кислородной делигнификации, для получения целлюлозной массы,- блок (30) отбелки, для отбелки полученной целлюлозной массы,- блок (60) регенерации химикатов,- пресспат (80),- содорегенерационный котел (70), генерирующий продувочную воду котла,- выпарной аппарат (40), генерирующий конденсаты,- установку (50) обработки сточных вод, и- установку водоподготовки,где способ включает транспортировку из по меньшей мере одного из следующих источников воды:- A) фильтратов EOP (щелочь-кислород-пероксид) отбелки, из блока (30) отбелки,- B) уплотняющих вод насоса Нэша из блока (30) отбелки,- C) конденсатов из выпарного аппарата (40),- D) вод из второго отстойника установки (50) обработки сточных вод,- E) охлаждающих вод струйного конденсатора из блока (60) регенерации химикатов,- F) уплотняющих вод вакуумного насоса из блока (60) регенерации химикатов, и- G) продувочных вод содорегенерационного котла (70),по меньшей мере в один из следующих пунктов использования:- H) промывка бревен в блоке (10) подготовки древесины,- I) рубка в блоке (10) подготовки древесины,- J) сортировка щепы в блоке (10) подготовки древесины,- K) конвейер для щепы в блоке (10) подготовки древесины,- L) промывка при кислородной делигнификации в блоке (20) получения небеленой целлюлозы,- M) вода для разбавления в блоке (20) получения небеленой целлюлозы,- N) пластины барабанного устройства для промывки вытеснением блока (30) отбелки,- O) стадия (стадии) промывки в блоке (30) отбелки,- P) вода для разбавления в блоке (30) отбелки,- Q) воды для орошения сушильной установки пресспата (80),- R) вода для орошения гравитаци РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК D21C 11/00 (13) 2014 136 221 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: ...

Method and apparatus for activating waste liquor

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method for the leaching of solid matter from sludge

본 발명은, 산소함유가스의 도움으로 슬러지로부터 고형물을 침출시키기 위한 방법에 관한 것으로, 상기 반응기의 중앙의 중앙파이프 및 상기 중앙파이프의 하부 가장자리 부근에 위치한 이중 작동 혼합기를 구비하는 높이가 높은 반응기 내에서 상기 슬러지의 고체입자가 재순환된다. 상기 중앙파이프로부터 하방으로 슬러지를 흡입하는 상기 혼합기의 도움으로 유동이 형성되며, 상기 반응기의 바닥부에서 상기 슬러지 내로 전도된 가스는, 상기 중앙파이프 외부에서 작은 기포형태로 슬러지 내로 분산되며 상기 슬러지의 유동방향은 상기 반응기의 외부 케이싱 내에서 상방으로 회전된다. FIELD OF THE INVENTION The present invention relates to a method for leaching solids from sludge with the aid of an oxygenous gas, in a high height reactor having a central working pipe in the center of the reactor and a double working mixer located near the bottom edge of the central pipe. In the sludge is recycled. A flow is formed with the aid of the mixer which sucks the sludge downward from the central pipe, and the gas conducted into the sludge at the bottom of the reactor is dispersed into the sludge in the form of small bubbles outside the central pipe and The flow direction is rotated upwards in the outer casing of the reactor.

METHOD AND DEVICE FOR PROCESSING LIQUID FLOWS AT A PULP FACTORY

1. Способ обработки жидких потоков на целлюлозном заводе, в котором устройство включает:- блок (10) подготовки древесины,- блок (20) получения небеленой целлюлозы, в котором осуществляют стадии варки, промывки, сортировки и кислородной делигнификации для получения целлюлозной массы,- блок (30) отбеливания для отбеливания полученной целлюлозной массы,- блок (60) химической регенерации,- пресспат (80),- регенерационный котел (70), генерирующий продувочную воду котла,- выпарную установку (40), генерирующую конденсаты,- установку (50) обработки сточных вод и- установку водоподготовки;где способ включает направление воды из по меньшей мере одного из следующих источников:- фильтратов EOP-отбеливания (щелочной экстракции с использованием кислорода и пероксида) из блока (30) отбеливания,- воды из второго отстойника установки (50) обработки сточных вод, на по меньшей мере одну из следующих стадий:- на подготовку древесины в блоке (10) подготовки древесины,- в качестве воды для орошения гравитационного стола установки (50) обработки сточных вод.2. Способ по п. 1, отличающийся тем, что фильтраты EOP-отбеливания из блока (30) отбеливания и/или воду для орошения гравитационного стола установки (50) обработки сточных вод направляют в блок подготовки древесины на по меньшей мере одну из следующих стадий:- на промывку бревен в блоке (10) подготовки древесины,- на измельчение древесины в щепу в блоке (10) подготовки древесины,- на сортировку щепы в блоке (10) подготовки древесины,- на транспортировку щепы в блоке (10) подготовки древесины.3. Способ по п. 1 или 2, отличающийся тем, что по меньшей мере часть технологических вод направляют в пресспат (80) и используют указанную часть в качестве воды для орошения пресспата.4. Способ по п. 1 или 2, отлич РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК D21C 11/00 (13) 2014 136 218 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014136218, 12.03.2013 (71) Заявитель(и): ЮПМ-Кюммене ...

A kind of special kind firing device of burning disposal higher boiling waste liquid and waste gas

本发明属于基础化工技术领域，具体涉及一种焚烧处理高沸点废液和废气的特种燃烧器。本发明燃烧器由燃烧器本体和燃烧室两部分组成；其结构方案和分级配风燃烧理念适用于氯碱行业但不限于此行业的高沸点废液的无害化焚烧处理，实现了高沸点废液单烧或高沸点废液和废气混烧过程中有机物的完全分解，并最大限度低消减了废物焚烧过程产生的氮氧化物和二噁英，满足最新的排放标准。

Extraction of concentrated portions of product consisting of tall oil soap, of mix of black alkali liquor and product consisting of tall oil soap, and device for this concentrated product consisting of tall oil soap and/or separated black alkali liquor

FIELD: process engineering. SUBSTANCE: invention relates to fat-and-oil industry. Proposed process comprises the steps that follow. First, tall oil soap is separated from black alkali liquor in the vessel and/or centrifuge. Said tall oil soap thus separated is processed by acidation and/or decomposition. Then, additional separation is performed by, for example, the centrifuge. Fractions of black alkali liquor are be processed for extra extraction of tall oil soap before evaporation and feed to regeneration boiler. EFFECT: higher efficiency of the process. 19 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C11B 13/02 (13) 2 570 710 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012131912/13, 28.12.2010 (24) Дата начала отсчета срока действия патента: 28.12.2010 (72) Автор(ы): ХОФСТЕДТ Андерс Гёран (SE) (73) Патентообладатель(и): ХОФСТЕДТ Андерс Гёран (SE) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 10.02.2014 Бюл. № 4 R U 30.12.2009 SE 0901624-7 (45) Опубликовано: 10.12.2015 Бюл. № 34 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 30.07.2012 (86) Заявка PCT: SE 2010/000320 (28.12.2010) 2 5 7 0 7 1 0 (56) Список документов, цитированных в отчете о поиске: US 4088638 A1, 09.05.1978. US 2200468 A, 14.05.1940. SU 76379 A1, 01.01.1949. 2 5 7 0 7 1 0 R U WO 2011/081587 (07.07.2011) C 2 C 2 (87) Публикация заявки PCT: Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", В.В.Дощечкиной (54) СПОСОБ ВЫДЕЛЕНИЯ КОНЦЕНТРИРОВАННЫХ ПОРЦИЙ ПРОДУКТА, СОСТОЯЩЕГО ИЗ МЫЛА ТАЛЛОВОГО МАСЛА, ИЗ СМЕСИ ЧЕРНОГО ЩЕЛОКА И ПРОДУКТА, СОСТОЯЩЕГО ИЗ МЫЛА ТАЛЛОВОГО МАСЛА, И УСТРОЙСТВА ДЛЯ ЭТОГО КОНЦЕНТРИРОВАННОГО ПРОДУКТА, СОСТОЯЩЕГО ИЗ МЫЛА ТАЛЛОВОГО МАСЛА, И/ИЛИ ОТДЕЛЕННОГО ЧЕРНОГО ЩЕЛОКА (57) Реферат: Настоящее изобретение относится к состоящего из мыла таллового масла, путем масложировой промышленности. Способ подкисления и/или разложения и затем непрерывного ...

Device and Method for Disposal of Mixtured Wastewater

The present invention relates to a treatment apparatus and a treatment method of mixed wastewater and, specifically, to a treatment apparatus and a treatment method of mixed wastewater, regarding the treatment apparatus for combustion treating mixed wastewater comprising at least two among livestock wastewater, food wastewater, and sludge, which maintain a concentration of ammoniacal nitrogen or a concentration of floating matters in the mixed wastewater by controlling the content of livestock wastewater, food wastewater, or sludge in the mixed wastewater. According to the present invention, the apparatus and the method have effects in increasing treatment efficiency of mixed wastewater and reducing the content of harmful substances of discharge gas.

Catalytic systems and methods of technological flows processing

FIELD: biochemistry. SUBSTANCE: invention relates to two variants of a method for producing methane. One embodiment includes contacting an aqueous fluid comprising at least one undesirable constituent, with a heterogeneous catalyst at a pressure of from about 20 atm to about 240 atm and a temperature of from 150 °C to about 373 °C for hydrolysis of at least one undesirable constituent in a fluid and generating a quantity of methane, the heterogeneous catalyst comprising an element selected from the group consisting of ruthenium, nickel, cobalt, iron and combinations thereof, and a solid support selected from the group, consisting of alumina oxide, silica dioxide and carbide. EFFECT: proposed invention makes it possible to remove from the treated waters kinetic hydrate inhibitors and hydrolyzed polyacrylamide. 12 cl, 1 dwg, 4 ex, 4 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 651 576 C1 (51) МПК C07C 1/00 (2006.01) C02F 1/72 (2006.01) C07C 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C02F 1/725 (2017.08); C02F 11/08 (2017.08); C07C 1/323 (2017.08); C08L 33/26 (2017.08); C10L 3/107 (2017.08) (21)(22) Заявка: 2016140634, 17.04.2015 17.04.2015 Дата регистрации: R U (24) Дата начала отсчета срока действия патента: (72) Автор(ы): ФЕЛЧ Чад Л. (US), ПАТТЕРСОН Мэттью Р. (US), КАМФЕР Брайан Дж. (US) (73) Патентообладатель(и): СИМЕНС ЭНЕРДЖИ, ИНК. (US) 23.04.2018 (56) Список документов, цитированных в отчете о поиске: JP H08192191 A, 30.07.1996. US 18.04.2014 US 61/981,272 2013/228528 A1, 05.09.2013. RU 2498050 C2, 10.11.2013. (45) Опубликовано: 23.04.2018 Бюл. № 12 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.11.2016 (86) Заявка PCT: 2 6 5 1 5 7 6 Приоритет(ы): (30) Конвенционный приоритет: 2 6 5 1 5 7 6 R U (87) Публикация заявки PCT: C 1 C 1 US 2015/026357 (17.04.2015) WO 2015/161187 (22.10.2015) Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО " ...

Oxidative Decomposition of Wastewater Containing Organics Using Supercritical Water and Catalytic Oxidation

본 발명은 생물학적 처리법으로 처리하기 곤한한 고농도, 난분해성 또는 독성의 유기물을 함유한 폐수, 오수 슬러지 및 유기성 폐액의 처리에 적합한 고효율 폐액처리 공정에 관한 것으로, 좀더 상세하게는 초임계수 산화법을 이용한 유기물 함유 폐액의 산화 분해 공정에 있어서, 내부압력이 218 기압 이상 및 내부온도가 374℃ 이상인 물의 초임계 상태이고, 적어도 2개 이상의 온도조절기가 부착된 상부영역과 내부압력이 218 기압 이상 및 내부온도가 374℃ 미만인 물의 아임계 상태이고, 유입되는 폐액에 의해 냉각되고, 동시에 유입되는 폐액은 반응기 하부영역의 열에 의해 가열되는 반응기 냉각기가 부착되고, 촉매반응층을 포함하는 하부영역이 함께 존재하는 반응기를 제공하는 단계; 유기물을 함유하는 폐액을 374℃ 이상의 온도와 218 기압 이상의 압력 및 산화제를 20℃이상의 온도와 218 기압 이상의 압력으로 상기 반응기의 상부로 유입시키는 단계; 및 상기 유기물이 산화분해된 처리수는 374℃ 미만의 온도 및 218 기압 이상의 압력인 물의 아임계상태로 반응기 하부로부터 배출관을 통해 반응기 외부로 배출시키는 단계를 포함하는 초임계수 산화와 촉매산화를 이용한 유기물 함유 폐액의 산화분해 공정에 관한 것이다.

Injection type burning furnace

本发明提供了一种引射式灼烧炉,属于燃烧设备技术领域，引射式灼烧炉包括燃烧腔，喷嘴的火焰出口、燃料气管的出口及进料管的出口位于燃烧腔内，燃烧腔的侧壁设置有进风口；燃烧腔内设置有用于扩大燃烧面积的助燃器，助燃器包括相互连通的引焰部和燃烧部，引焰部与火焰出口、进风口及燃料气管的出口相对设置，用于将火焰、空气及燃气引入到燃烧部内；燃烧部设置进气孔，进气孔与进料管的出口连通，用于将进料管的废气及废液引入燃烧部，废气及废液与燃烧部内的空气、燃气混合并引燃。本发明提供的引射式灼烧炉，其燃烧腔内设置有助燃器，助燃器用于扩大空气和废气的燃烧面积，使废气及废液在燃烧部内充分燃烧，防止出现黑烟的现象。

Manufacturing method of oxidized white liquor

Device for separating liquid and solid of livestock excrement

PURPOSE: A solid-liquid separating device for livestock excrements is provided to increase a treatment efficiency of solid-liquid separation by preventing through holes from being clogged. CONSTITUTION: A solid-liquid separating device for livestock excrements consists of a hopper (100) and a roller compressing unit which is installed on an outlet of the hopper. The roller compressing unit separates livestock excrements into a solid phase and liquid phase. The roller compressing unit includes a rubber roller (210) and a compressing and separating roller (220). The upper part of the rubber roller has a downward force to compress the livestock excrements. The rubber roller possibly idles by being installed on the tip end axial unit of a support (211) which is upwardly lifted based on a fixed axial unit. A tip end connecting unit (213) of the support has a pulling spring (214) in order to generate a downward force such that the rubber roller has an attraction force toward the compressing and separating roller. A rear end connecting unit of the support controls the downward force of the pulling spring by a weight.

Method for continuous precipitation of lignin from black liquor

FIELD: chemistry. SUBSTANCE: invention relates to a method for continuous precipitation of lignin from black liquor, wherein pH of the black liquor is lowered to the lignin precipitation point and the precipitated lignin is separated from the black liquor. The black liquor is fed so as to flow as a pressurised stream in a reactor (2) with a dwell time of less than 300 s; an acidifying agent selected from a group consisting of carbon dioxide, an acid and combinations thereof is fed to the stream at one or more feeding points (2a) in order to lower the pH of black liquor; the pH is allowed to decrease under the effect of the acidifying agent in the pressurised stream to the lignin precipitation point; the pressure of the pressurised stream is abruptly released, and lignin particles are separated from black liquor. EFFECT: method enables to obtain lignin with high output, having a suitable particle size with a short dwell time and at an industrial scale with low operating costs, which enables to quickly change process conditions. 15 cl, 5 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 564 674 C2 (51) МПК C07G 1/00 (2011.01) D21C 11/00 (2006.01) D21C 11/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013117995/04, 14.10.2011 (24) Дата начала отсчета срока действия патента: 14.10.2011 (72) Автор(ы): МИЕТТИНЕН Мауно (FI) (73) Патентообладатель(и): ЮПМ-Кюммене Корпорейшн (FI) Приоритет(ы): (30) Конвенционный приоритет: R U 15.10.2010 FI 20106073; 11.05.2011 FI 20115452 (43) Дата публикации заявки: 20.11.2014 Бюл. № 32 (56) Список документов, цитированных в отчете о поиске: US 2997466 A1, 22.08.1961. WO 2008079072 A1, 03.07.2008. US 2828297 A, 25.03.1958. WO 1992013849 A1, 20.08.1992. US 3223697 A1, 14.12.1965. SU 81886 A1, 19.08.1949. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.05.2013 2 5 6 4 6 7 4 (45) Опубликовано: 10.10.2015 Бюл. № 28 FI 2011/050896 (14.10.2011) C 2 C 2 ( ...