METHOD FOR THE PRODUCTION OF AIR GASES BY THE CRYOGENIC SEPARATION OF AIR

A method for the production of air gases by the cryogenic separation of air can include the steps of sending a purified and compressed air stream to a cold box under conditions effective for cryogenically separating the air stream into an oxygen product and nitrogen using a system of columns, wherein the purified and compressed air stream is at a feed pressure when entering the system of columns; withdrawing the oxygen product at a product pressure; delivering the oxygen product at a delivery pressure to an oxygen pipeline, wherein the oxygen pipeline has a pipeline pressure; wherein during the second mode of operation, the method can include monitoring the pipeline pressure; and reducing the difference between the pipeline pressure and the delivery pressure. By operating the method in a dynamic fashion, a power savings can be realized in instances in which the pipeline pressure deviates from its highest value. 1. A method for the production of air gases by the cryogenic separation of air , the method comprising the steps of:{'sub': 'o', 'a) compressing air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) purifying the compressed humid air stream of water and carbon dioxide within a front end purification system to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) compressing a first portion of the dry air stream in a booster compressor to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) introducing a second portion of the dry air stream and the boosted air stream to a cold box under conditions effective to separate air to form an air gas product, wherein the air gas product is selected from the group consisting of oxygen, nitrogen, and combinations thereof;{'sub': 'P1', 'e) withdrawing the air gas product from the cold ...

APPARATUS FOR THE PRODUCTION OF AIR GASES BY THE CRYOGENIC SEPARATION OF AIR

An apparatus for the production of air gases by the cryogenic separation of air can include a cold box having a heat exchanger, and a system of columns; a pressure monitoring device; and a controller. The cold box can be configured to receive a purified and compressed air stream under conditions effective for cryogenically separating the air stream to form an air gas product. The apparatus may also include means for transferring the air gas product from the cold box to an air gas pipeline. The pressure monitoring device is configured to monitor the pipeline pressure, and the controller is configured to adjust the product pressure of the air gas product coming out of the cold box based upon the pipeline pressure. 1. An apparatus for the production of air gases by the cryogenic separation of air , the apparatus comprising:{'sub': 'o', 'a) a main air compressor configured to compress air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) a front end purification system configured to purify the compressed humid air stream of water and carbon dioxide to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) a booster compressor in fluid communication with the front end purification system, wherein the booster compressor is configured to compress a first portion of the dry air stream to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) a cold box comprising a main heat exchanger, a system of columns having a double column composed of a lower pressure column and a higher pressure column, a condenser disposed at a bottom portion of the lower pressure column, and a liquid oxygen pump, wherein the cold box is configured to receive the boosted air stream and a second portion of the dry air stream under conditions effective to separate air ...

APPARATUS FOR OPERATING AN AIR SEPARATION PLANT

An apparatus for the production of air gases with variable liquid production by the cryogenic separation of air can include a cold box having a heat exchanger, and a system of columns; a pressure monitoring device; and a controller. The cold box can be configured to receive a purified and compressed air stream under conditions effective for cryogenically separating the air stream to form an air gas product. The apparatus may also include means for transferring the air gas product from the cold box to an air gas pipeline. The pressure monitoring device is configured to monitor the pipeline pressure, and the controller is configured to adjust the product pressure of the air gas product coming out of the cold box based upon the pipeline pressure and to further adjust liquid production from the cold box based on the adjusted product pressure. 1. An apparatus for the production of air gases by the cryogenic separation of air , the apparatus comprising:{'sub': 'o', 'a) a main air compressor configured to compress air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) a front end purification system configured to purify the compressed humid air stream of water and carbon dioxide to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) a booster compressor in fluid communication with the front end purification system, wherein the booster compressor is configured to compress a first portion of the dry air stream to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) a cold box comprising a main heat exchanger, a system of columns having a double column composed of a lower pressure column and a higher pressure column, a condenser disposed at a bottom portion of the lower pressure column, and a liquid oxygen pump, wherein the cold box is ...

METHOD FOR OPERATING AN AIR SEPARATION PLANT

A method for the production of air gases with variable liquid production by the cryogenic separation of air can include the steps of sending a purified and compressed air stream to a cold box under conditions effective for cryogenically separating the air stream into an oxygen product and nitrogen using a system of columns, wherein the purified and compressed air stream is at a feed pressure when entering the system of columns; withdrawing the oxygen product at a product pressure; delivering the oxygen product at a delivery pressure to an oxygen pipeline, wherein the oxygen pipeline has a pipeline pressure; wherein during the second mode of operation, the method can include monitoring the pipeline pressure; reducing the difference between the pipeline pressure and the delivery pressure; and adjusting liquid production from the cold box. By operating the method in a dynamic fashion, additional liquid production can be realized in instances in which the pipeline pressure deviates from its highest value. 1. A method for the production of air gases with variable liquid production by the cryogenic separation of air , the method comprising the steps of:{'sub': 'o', 'a) compressing air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) purifying the compressed humid air stream of water and carbon dioxide within a front end purification system to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) compressing a first portion of the dry air stream in a booster compressor to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) introducing a second portion of the dry air stream and the boosted air stream to a cold box under conditions effective to separate air to form an air gas product, wherein the air gas product is selected from the ...

ZEOLITE ADSORBENTS HAVING A HIGH EXTERNAL SURFACE AREA AND USES THEREOF

The present invention concerns the use, for gas separation, of at least one zeolite adsorbent material comprising at least one FAU zeolite, said adsorbent having an external surface area greater than 20 m·g, a non-zeolite phase (PNZ) content such that 0 Подробнее

SYSTEM FOR PRE-PURIFICATION OF A FEED GAS STREAM

A system and method of pre-purification of a feed gas stream is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the hydrogen, carbon monoxide, water, and carbon dioxide impurities from a feed air stream and is particularly suitable for use in a high purity or ultra-high purity nitrogen plant. The pre-purification systems and methods preferably employ two or more separate layers of hopcalite catalyst with the successive layers of the hopcalite separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layers. Alternatively, the pre-purification systems and methods employ a hopcalite catalyst layer and a noble metal catalyst layer separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layer. 1. A method of purifying a gas stream to remove the hydrogen and carbon monoxide impurities present in the gas stream , the method comprising:(a) passing the gas stream substantially free of carbon dioxide and water through a first catalyst layer comprising a mixture manganese and copper oxides configured to remove at least some of the carbon monoxide and hydrogen from the gas stream and produce a first intermediate effluent;(b) passing the first intermediate effluent through an adsorbent layer disposed downstream of the first catalyst layer, the adsorbent layer configured to remove water and carbon dioxide from the intermediate effluent and produce a second intermediate effluent; and(c) passing the second intermediate effluent through a second catalyst layer disposed downstream of the adsorbent layer, the second catalyst layer configured to remove at least hydrogen from the second intermediate effluent to yield an intermediate purified stream.2. The method of claim 1 , wherein the intermediate purified stream is substantially ...

Rapid Cycle Pressure Swing Adsorption Process and Adsorbent Laminates for Use Therein

A rapid cycle pressure swing adsorption (RCPSA) air purification process, apparatus, and device for the removal of at least one of water, carbon dioxide, nitrous oxide, and one or more hydrocarbons from a feed air stream prior to cryogenic air separation.

Facility For Producing Gaseous Methane By Purifying Biogas From Landfill, Combining Membranes And Cryogenic Distillation For Landfill Biogas Upgrading

A process and facility for producing gaseous methane by purifying biogas from landfill, can include a VOC purification unit, at least one membrane, a booster, a COpurification unit, a cryodistillation unit comprising a heat exchanger, a distillation column, and a subcooler, a deoxo, and a dryer. 1a compression unit for compressing an initial gas flow of the biogas to be purified,a VOC purification unit arranged downstream of the compression unit to receive the compressed initial flow of the biogas and comprising at least one adsorber loaded with adsorbents capable of reversibly adsorbing VOCs to thereby produce a VOC-depleted gas flow;at least one membrane arranged downstream of the VOC purification unit to receive the VOC-depleted gas flow and subject the VOC-depleted gas flow to at least one membrane separation to thereby produce a retentate;a booster arranged downstream of the membrane unit to receive the retentate from the membrane capable of increasing the pressure of the retentate to produce a pressurized retentate;{'sub': 2', '2', '2', '2, 'a COpurification unit arranged downstream of the booster to receive the pressurized retentate, wherein the COpurification unit comprises at least one adsorber loaded with adsorbents capable of reversibly adsorbing the majority of remaining COfrom the pressurized retentate to produce a CO-depleted gas flow;'}{'sub': 2', '2', '2', '2', '2', '2, 'a cryodistillation unit comprising a heat exchanger, a distillation column, and a subcooler, the cryodistillation unit arranged downstream of the COpurification unit to receive the CO-depleted gas flow and subject the CO-depleted gas flow to a cryogenic separation to separate Oand Nfrom the CO-depleted gas flow capable and to produce 2 methane enriched flows respectively a low pressure (LP) and a medium pressure (MP) methane enriched flows;'}a compressor compressing the low pressure methane enriched flow, in order to mix it with the medium pressure methane enriched flow, to produce a ...

DISTILLATION COLUMN SYSTEM AND PLANT FOR PRODUCTION OF OXYGEN BY CRYOGENIC FRACTIONATION OF AIR

A distillation column system and a plant are for production of oxygen by cryogenic fractionation of air. The distillation column system has a high-pressure column and a low-pressure column, a main condenser, and an argon column with an argon column top condenser. The low-pressure column comprises an upper mass transfer region, a lower mass transfer region and a middle mass transfer region. The argon column top condenser is arranged within the low-pressure column between the upper and middle mass transfer regions and is configured as a forced-flow evaporator. 1. A distillation column system for obtaining oxygen by cryogenic fractionation of air , comprisinga high-pressure column and a low-pressure column,a main condenser configured as a condenser-evaporator, the liquefaction space of the main condenser being in flow connection with the top of the high-pressure column,and comprising an argon column whichis in flow connection with an intermediate point in the low-pressure column, andhas means of drawing off an argon-enriched stream andan argon column top condenser which is configured as a condenser-evaporator and is in flow connection with the top of the argon column,the low-pressure column has an upper mass transfer region, a lower mass transfer region and a middle mass transfer region,the middle mass transfer region has at least one first mass transfer space which is open in the upward direction toward the upper mass transfer region and in the downward direction toward the lower mass transfer region,characterized in thatthe upper mass transfer region has a liquid collector at its bottom end,the first mass transfer space has a liquid distributor at its top,the argon column top condenser is arranged within the low-pressure column between the upper and middle mass transfer regions, and in that means of introducing liquid from the liquid collector beneath the upper mass transfer region into the inlet of the evaporation space of the argon column top condenser, and', 'a ...

APPARATUS AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

An apparatus for separating air, comprising a double column, means for sending air to the purification unit at a pressure that is no more than 1 bar higher than atmospheric pressure, a pipe for sending a first air flow, the first air flow having been purified in the purification unit, to the heat exchanger at a fourth pressure that is no more than 1 bar higher than the second pressure, a pipe for sending the first purified air flow, which has been cooled in the heat exchanger, to the second column for separation, and a booster compressor, the apparatus not comprising any means for depressurizing the first flow. 115-. (canceled)16. An air separation apparatus comprising:a double column with a first column operating at a first pressure and a second column operating at a second pressure, lower than the first pressure, the second column having a bottom reboiler;means for sending nitrogen-enriched gas from the top of the first column to the bottom reboiler and means for sending at least a part of the condensed nitrogen-enriched gas from the bottom reboiler to the top of the first column;a heat exchanger;a purification unit;means for sending air to the purification unit at a third pressure greater than atmospheric pressure by at most 1 bar;a pipe for sending a first flow of air purified in the purification unit to the heat exchanger at a fourth pressure greater than the second pressure by at most 1 bar;a pipe for introducing the first flow of purified air cooled in the heat exchanger into the second column in order to be separated therein, a booster;a pipe for sending a second flow of air purified in the purification unit to the booster;a pipe for sending at least a part of the second flow, compressed by the booster up to a fifth pressure between the first pressure and 1 bar above the first pressure, to the heat exchanger;means for producing refrigeration;a pipe for withdrawing at least one fluid enriched in oxygen or nitrogen from a column of the double column connected ...

AIR SEPARATION APPARATUS

A cryogenic air separation method and apparatus in which first and second liquid streams are produced. The first liquid stream has a higher oxygen content than air and can consist of a higher pressure distillation column bottoms and the second liquid stream, for instance, air, has a lower oxygen content than the first liquid stream and an argon content no less than the air. The second liquid stream is subcooled through indirect heat exchange with the first liquid stream and both of such streams are introduced into the lower pressure column. The second liquid stream is introduced into the lower pressure column above that point at which the crude liquid oxygen column bottoms or any portion thereof is introduced into the lower pressure column to increase a liquid to vapor ratio below the introduction of the second liquid stream and therefore, reduce the oxygen present within the column overhead. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. An air separation apparatus comprising:a cryogenic distillation column unit having at least a higher pressure column and a lower pressure column configured to distill compressed and purified air into at least a nitrogen-rich fraction and oxygen-rich fraction, the lower pressure column operatively associated with the higher pressure column in a heat transfer relationship and connected to the higher pressure column such that a crude liquid oxygen stream produced in the higher pressure column is introduced into and further refined in the lower pressure column;the distillation column unit further having an argon column configured to produce an argon-rich fraction stream from an oxygen and argon containing vapor stream extracted from the lower pressure column;a main heat exchanger configured for cooling the compressed and purified air to produce a liquid air stream ...

SYSTEM AND METHOD FOR ENHANCED RECOVERY OF ARGON AND OXYGEN FROM A NITROGEN PRODUCING CRYOGENIC AIR SEPARATION UNIT

A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon, an overall nitrogen recovery of 98 percent or greater and limited gaseous oxygen production. The air separation is configured to produce a first high purity oxygen enriched stream and a second lower purity oxygen enriched stream from the lower pressure column, one of which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption pre-purifier unit. All or a portion of the first high purity oxygen enriched stream is vaporized in the main heat exchanger to produce the gaseous oxygen products. 121-. (canceled)22. A method of separating air to produce one or more high purity nitrogen products in a cryogenic air separation unit with a total nitrogen recovery of 98 percent or greater , the method comprising the steps of:compressing a stream of incoming feed air to produce a compressed air stream;purifying the compressed air stream in an adsorption based pre-purification unit configured to removing water vapor, carbon dioxide, nitrous oxide, and hydrocarbons from the compressed air stream to producing a compressed and purified air stream;splitting the compressed and purified air stream is split into at least a boiler air stream and a turbine air stream;expanding the turbine air stream in a turboexpander to form an exhaust stream;cooling the boiler air stream against a pumped oxygen stream to produce a cooled boiler air stream at a temperature suitable for rectification in a cryogenic distillation system and a gaseous oxygen product stream;directing the cooled boiler air stream and the exhaust stream to the cryogenic distillation column system, the cryogenic distillation system having a higher pressure column and a lower pressure column linked in a heat transfer relationship via a condenser-reboiler, the cryogenic distillation column ...

CORE-IN-SHELL COMPOSITE ADSORBENT FOR USE IN PSA PREPURIFIERS

The present invention relates generally to an attrition resistant core-in-shell composite adsorbent comprising at least a zeolite-containing COremoval adsorbent and a binder on an inert dense core. The attrition resistant core-in-shell composite adsorbent has an attrition loss of less than about 2 wt %. The core-in-shell composite adsorbent is preferably used in a multi-layered adsorption system in a cyclic adsorption process, preferably used in a PSA prepurification process prior to cryogenic air separation. 1. A multi-layered PSA adsorption system for purifying a gaseous feed containing less than about 5% COin a cyclic adsorption process comprising two or more adsorbent layers wherein the first layer comprises a water vapor removal adsorbent and a second layer comprises a COremoval adsorbent , wherein said adsorbent is a core-in-shell composite adsorbent comprising an inert dense core , and an adsorptive shell comprising at least one zeolite-containing COremoval adsorbent and a binder , wherein the core diameter ratio ranges from about 50% to about 90% , wherein the attrition loss of said core-in-shell composite adsorbent is less than about 2 wt % , and wherein volumetric performance of said adsorbent is greater than or equal to 0.70 BSF (m3/s.m2).2. The adsorption system of wherein said binder is a clay selected from a group comprising attapulgite claim 1 , sepiolite claim 1 , kaolin claim 1 , haloysite and mixtures thereof .3. The adsorption system of wherein the binding agent in the adsorptive shell is greater than about 10 wt % of said shell material.4. The adsorption system of wherein the volumetric performance of core-in-shell adsorbent is greater than or equal to 0.76 BSF (m3/s.m2).5. The adsorption system of wherein the zeolite is type X and has a SiO/AlOratio of about less than or equal to 2.5.6. The adsorption system of wherein the first layer is activated alumina and the inert dense core in the core-in-shell adsorbent of the second layer is sand.7. A ...

METHOD FOR OBTAINING AN AIR PRODUCT IN AN AIR SEPARATION PLANT AND AIR SEPARATION PLANT

A method for obtaining an air product from an air separation plant having a distillation column system and a tank system. The tank system includes a first tank and a second tank. Cryogenic liquid is withdrawn from the distillation column system, stored in the tank system, and used as the air product. The cryogenic liquid is supplied to the first tank and withdrawn from the second tank during a first period, and is supplied to the second tank and withdrawn from the first tank during a second period. The tank system has a third tank to which cryogenic liquid withdrawn from the first tank and the second tank is transferred unheated. The air product is withdrawn from the third tank in liquid state, vaporized and discharged. Alternatively, the cryogenic liquid can be withdrawn from the third tank and stored in the liquid state in a fourth tank. 1. Method for obtaining an air product using an air separation plant having a distillation column system and a tank system with a first tank and a second tank , in which a cryogenic liquid is withdrawn from the distillation column system , is stored at least in part in the tank system , and is then used at least in part as the air product , wherein the cryogenic liquid is supplied to the first tank and not to the second tank during a first period , and is supplied to the second tank and not to the first tank during a second period , and is withdrawn from the second tank and not from the first tank during the first period , and from the first tank and not from the second tank during the second period , characterized in that the tank system comprises an additional third tank , and in that the cryogenic liquid which is withdrawn from the second tank during the first period , and from the first tank during the second period , is transferred at least partially unheated into the third tank , and in that the air product is provided at least in part by using the cryogenic liquid transferred , unheated , into the third tank , or part of ...

Systems For Extracting Oxygen From A Fluid

A system for extracting oxygen from a liquid includes a separator allowing a liquid to pass lengthwise through the separator to produce a liquid mixture with the liquid having at least a portion of oxygen removed from the liquid. The separator includes a wall surrounding an interior portion of a tube. The wall has at least one aperture formed in the wall. The separator also includes at least one magnet positioned adjacently to the at least one aperture. The magnet has a north pole end and a south pole end. A magnetic field gradient is formed between the north pole end and the south pole end, and extends into an interior portion of the tube. The system also includes a storage tank fluidly coupled to the at least one aperture for storing the at least a portion of the oxygen removed from the liquid via the separator. 1. A method of extracting oxygen from a liquid using a separator including: a tube having a wall surrounding an interior portion of the tube , at least one aperture formed in the wall , and at least one magnet positioned adjacently to the at least one aperture and having a north pole and a south pole , the method comprising:forming a magnetic field gradient between the north and south poles of the at least one magnet and extending into the interior portion of the tube;first flowing a fluid including oxygen lengthwise through the separator; andsecond flowing at least a portion of the oxygen removed from the fluid in the first flowing step out of the separator via the at least one aperture.2. The method of further comprising flowing the fluid having the at least a portion of the oxygen removed therefrom through a feedback system to supply the fluid back to the separator upstream of the at least one aperture to facilitate removing an additional amount of oxygen from the fluid.3. The method of further comprising flowing the at least a portion of the oxygen removed from the fluid from the at least one aperture to a storage tank to facilitate storing the at ...

PROCESS AND APPARATUS FOR PRODUCING PRESSURIZED GASEOUS NITROGEN BY CRYOGENIC SEPARATION OF AIR

Process and apparatus for producing pressurized gaseous nitrogen by cryogenic separation of air. The distillation column system includes a high pressure column, a medium pressure column, a main condenser and top condenser both being condenser-evaporators. Compressed and purified feed air is cooled in a heat exchanger and introduced to the distillation system. A gaseous nitrogen stream from the high pressure column is condensed in the main condenser. Bottom liquid of the medium pressure column is evaporated and gaseous nitrogen from the medium pressure column is condensed in the top condenser. Liquid nitrogen from the medium pressure column is pressurized and introduced to the high pressure column. A second gaseous nitrogen stream from the high pressure column is recovered as pressurized gaseous nitrogen product. A portion of the compressed and purified feed air is work-expanded and then warmed in the main heat exchanger. 1. Process for producing pressurized gaseous nitrogen by cryogenic separation of air in a distillation column system comprising a high pressure column , a medium pressure column , a main condenser and a medium pressure column top condenser both in the form of condenser-evaporators , wherebythe total feed air is compressed in a main air compressor to a first pressure which is higher than the operating pressure at the top of the high pressure column,the compressed air stream is purified,the compressed and purified feed air stream is introduced into a main heat exchanger under a first pressure and cooled in the main heat exchanger,at least a portion of the cooled air is introduced into the distillation column system,a first gaseous nitrogen stream from the top the high pressure column is condensed in the liquefaction space of the main condenser,bottom liquid of the high pressure column is sent to an intermediate section of the medium pressure column,bottom liquid of the medium pressure column is sent to the evaporation space of the medium pressure ...

METHOD FOR THE CRYOGENIC SEPARATION OF AIR AND AIR SEPARATION PLANT

A method and plant for the cryogenic separation of air, the plant having an air compressor, a heat exchanger and a distillation column system having a low-pressure column at a first pressure and a high-pressure column at a second pressure. Feed air is compressed in the air compressor to a third pressure at least 2 bar above the second pressure A first fraction of compressed feed air is cooled in the heat exchanger and expanded in a first expansion turbine. A second fraction is cooled in the heat exchanger and expanded in a second expansion turbine A third fraction is compressed to a fourth pressure, cooled in the heat exchanger and then expanded. The third fraction is compressed to the fourth pressure in sequence in a recompressor, a hot first turbine booster and a second turbine booster. A dense fluid expander is used to expand the third fraction. 2. The method as claimed in claim 1 , wherein the third fraction is fed to the second turbine booster at a temperature level of −40 to 50° C.3. The method as claimed in claim 2 , wherein at least one liquid air product is withdrawn from the air separation plant in a fraction of 3 to 10 mol % of the feed air stream.4. The method as claimed in claim 2 , wherein the third fraction claim 2 , after the recompression in the second turbine booster is cooled in an aftercooler starting from a temperature level above the ambient temperature and thereafter in the main heat exchanger from a temperature level of 10 to 50° C. to a temperature level of −140 to −180° C.5. The method as claimed in claim 1 , wherein the first pressure level is at 1 to 2 bar claim 1 , the second pressure level is at 5 to 6 bar claim 1 , the third pressure level is at 8 to 23 bar and/or the fourth pressure level is at 50 to 70 bar absolute pressure.6. The method as claimed in claim 1 , wherein the third fraction is fed to the first turbine booster at a temperature level of 0 to 50° C. and to the second turbine booster at a temperature level of −140 to −20° C ...

SYSTEM AND A METHOD TO EXTRACT OXYGEN FROM AIR

Provided herein are systems, apparatus, and methods for extracting pure oxygen from a liquid. In some embodiments, a system for extracting oxygen from a liquid comprises a separator configured to allow a liquid to pass therethrough and to produce a liquid mixture comprising the liquid having at least a portion of oxygen removed therefrom. The separator comprises a wall surrounding an interior portion of a tube, the wall having at least one aperture formed therein. The separator also comprises at least one magnet positioned adjacently to the at least one aperture having a north pole end and a south pole end forming a magnetic field gradient therebetween and extending into an interior portion of the tube. The system also comprises a storage tank fluidly coupled to the at least one aperture and configured to store the at least a portion of oxygen removed from the liquid via the separator. 1. A system for extracting oxygen from a liquid comprising: a wall surrounding an interior portion of a tube, the wall having at least one aperture formed therein; and', 'at least one magnet positioned adjacently to the at least one aperture, the at least one magnet having a north pole end and a south pole end forming a magnetic field gradient therebetween and extending into an interior portion of the tube; and, 'a separator configured to allow a liquid to pass therethrough and to produce a liquid mixture comprising the liquid having at least a portion of oxygen removed therefrom, the separator comprisinga storage tank fluidly coupled to the at least one aperture and configured to store the at least a portion of oxygen removed from the liquid via the separator.2. The system of wherein the liquid comprises liquid air.3. The system of wherein the at least one magnet is configured to form the magnetic field gradient as a 10 Tesla/meter magnetic field gradient.4. The system of wherein the at least one magnet comprises a 1 Tesla magnet.5. The system of further comprising: compress air from ...

PRODUCT GAS SUPPLY QUANTITY ADJUSTMENT DEVICE AND AIR SEPARATION APPARATUS COMPRISING SAME

A supply quantity adjustment device comprises: a total demand quantity calculation unit that calculates a total demand quantity used at a supply destination, based on plant information; an excess/deficit information setting unit that compares the total demand quantity and a flow rate set value and sets a first calculated pressure value; a backup coefficient setting unit that sets a backup coefficient set value based on a reference gasholder pressure, the first calculated pressure value, a reference backup pressure set value, and a measured gasholder pressure value; and a production coefficient setting unit that compares a production pressure set value obtained by adding the reference gasholder pressure and a first pressure output value with the measured gasholder pressure value, and sets a production coefficient so as to modify a variation in the quantity of product gas produced by the air separation apparatus. 1. A supply quantity adjustment device , comprising: a total demand quantity calculation unit that calculates a total demand quantity used at the at least one supply destination , based on plant information acquired from the at least one supply destination;an excess/deficit information setting unit that compares the total demand quantity and a pre-set flow rate set value and sets a first calculated pressure value;a backup coefficient setting unit that sets a backup coefficient set value based on a pre-set supply-destination reference gasholder pressure, the first calculated pressure value, a pre-set reference backup pressure set value, and a measured gasholder pressure value, which is the measured pressure value of the supply-destination gasholder; anda production coefficient setting unit that compares a production pressure set value obtained by adding the pre-set supply-destination reference gasholder pressure and a first pressure output value with the measured gasholder pressure value, and sets a production coefficient so as to modify a variation in the ...

Air compression system and method

An air compression system and method for an air separation plant in which air is compressed in a series of compression stages and a temperature swing adsorption unit adsorbs water vapor and carbon dioxide. The temperature swing adsorption unit is situated at a location of the compression stages such that air pressure upon entry into the adsorbent beds is between about 400 psia and about 600 psia. Each of the adsorbent beds of the unit have a minimum transverse cross-sectional flow area that will set the air velocity of the air to a level below that at which adsorbent bed fluidization would occur. Such operation allows fabrication costs of the adsorbent beds to be reduced because less adsorbent and smaller adsorbent beds are required while power consumption will be at a minimum.

METHOD FOR THE PRODUCTION OF AIR GASES BY THE CRYOGENIC SEPARATION OF AIR WITH IMPROVED FRONT END PURIFICATION AND AIR COMPRESSION

A method and apparatus for the production of air gases by the cryogenic separation of air with front end purification and air compression can include using an available compressed dry gas such as nitrogen, oxygen, stored purified air, or synthetic air to repressurize the adsorber without diverting any of the purified air just exiting the currently on-line adsorber or changing the flow rate of the main air compressor or air sent to the cold box. This enables the main air compressor (MAC) to operate at a relatively constant flow rate while also sending a relatively constant air flow to the cold box during this repressurization step, thereby reducing the risks of process upsets and minimizing capital expenditures related to the MAC and other warm-end equipments. 1. A method for the production of air gases by the cryogenic separation of air with front end purification and air compression , the method comprising the steps of:a) compressing atmospheric air to a pressure suitable for the cryogenic rectification of air to produce a compressed wet air stream;b) purifying the compressed wet air stream of water and carbon dioxide within a front end purification system to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed wet air stream, wherein the front end purification system comprises a first vessel and a second vessel configured in a permutable fashion, wherein the first vessel comprises a first adsorber and the second vessel comprises a second adsorber, wherein the first and second adsorbers operate in alternating cycles such that while the first adsorber is in an adsorption cycle, the second adsorber is in a regeneration cycle and while the second adsorber is in the adsorption cycle, the first adsorber is in the regeneration cycle;c) introducing the dry air stream to a cold box under conditions effective to separate the dry air stream into a nitrogen enriched stream and an oxygen enriched stream;d) withdrawing the ...

PROCESS AND APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

A process comprises a first set of distillation columns and a second set of distillation columns, a low-pressure column of the first set being connected to a column operating at higher pressure of the second set by means of a gas arriving from the top of the column operating at a higher pressure and/or by means of a fluid arriving from the low-pressure column. 113-. (canceled)14. A process for separating air by cryogenic distillation in an apparatus comprising:i) a first set of distillation columns comprising at least a first column operating at a first pressure referred to as high pressure and a second column operating at a second pressure lower than the first pressure, the top of the first column being thermally connected to the bottom of the second column by means of a first reboiler-condenser, a first purification unit and a first heat exchange line; andii) a second set of distillation columns comprising at least a third column operating at a third pressure lower than the first pressure and a fourth column operating at a fourth pressure lower than the first, the second and the third pressures, the top of the third column being thermally connected to the bottom of the fourth column by means of a second reboiler-condenser, a second purification unit and a second heat exchange line,the method comprising the steps of:sending a first compressed air to the first purification unit to produce a first purified air;sending the first purified air from the first purification unit to the first exchange line to produce a first cooled air;sending the first cooled air from the first exchange line to the first column under conditions effective for the rectification of air;sending a second compressed air to the second purification unit to produce a second purified air;sending the second purified air from the second purification unit to the second exchange line to produce a second cooled air;sending the second cooled air from the second exchange line to the third column under ...

METHOD FOR CONTROLLING PRODUCTION OF HIGH PRESSURE GASEOUS OXYGEN IN AN AIR SEPARATION UNIT

A method for controlling production of high pressure gaseous oxygen in a cryogenic air separation unit that uses a high pressure gaseous oxygen bypass together with adjustments to the split of the incoming compressed and purified air between the boiler air circuit and the turbine air circuit such that the volumetric ratio of the boiler air stream to the turbine air stream is reduced to between about 0.15:1 and 0.35:1. 2. The method of wherein between about 10% less power and 20% less power is used to make same volume of liquid nitrogen and liquid oxygen when operating in the high pressure gaseous oxygen bypass mode compared to operating in the high pressure gaseous oxygen full product mode.3. The method of wherein between 5% and 10% additional of liquid products are made when operating in the high pressure gaseous oxygen bypass mode compared to operating in the high pressure gaseous oxygen full product mode.4. The method of wherein the volumetric flow rate of the stream of feed air during the high pressure gaseous oxygen bypass mode is about equal to the first volumetric flow rate.5. The method of wherein the volumetric flow rate of the stream of feed air during the high pressure gaseous oxygen bypass mode is between about 85% and 100% of the first volumetric flow rate.6. The method of wherein the air separation plant is operated in a turndown mode wherein the first volumetric flow rate is less than 85% of the designed volumetric flow rate of the air separation plant.7. The method of wherein the step of reducing the volumetric ratio of the further compressed boiler air stream directed to the primary heat exchanger to the turbine air stream directed to the primary heat exchanger to between about 0.15:1 and 0.35:1 further comprises diverting a portion of the further compressed boiler air stream from a location upstream of the primary heat exchanger to the turbine air circuit.8. The method of wherein the step of reducing the volumetric ratio of the further compressed ...

Air Separation Apparatus for Isobaric Separation and Production of Oxygen and Nitrogen

This invention is about an air separation apparatus to produce oxygen and nitrogen through isobaric separation, which is based on the Rankine cycle system of similar thermal energy power circulation apparatus at cryogenic side, a liquid pump is used to input work and the cold is made up to the air separation apparatus with refrigerating media, so as to realize the isobaric separation of air to produce nitrogen and oxygen. The air separation apparatus of this invention can save energy by over 30% as compared with the traditional advanced apparatus with the identical refrigerating capacity, and it can also realize centralize gas supply via the air separation apparatus, therefore it constitutes a breakthrough to the traditional air separation technology and refrigeration theory, with substantial economic, social and environmental protection benefits.

SYSTEM AND METHOD FOR ENHANCED RECOVERY OF ARGON AND OXYGEN FROM A NITROGEN PRODUCING CRYOGENIC AIR SEPARATION UNIT

A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon, an overall nitrogen recovery of 98 percent or greater and limited gaseous oxygen production. The air separation is configured to produce a first high purity oxygen enriched stream and a second lower purity oxygen enriched stream from the lower pressure column, one of which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption pre-purifier unit. All or a portion of the first high purity oxygen enriched stream is vaporized in the main heat exchanger to produce the gaseous oxygen products.

System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit

A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon, an overall nitrogen recovery of 98% or greater and limited gaseous oxygen production. The air separation is configured to produce a first high purity oxygen enriched stream and a second lower purity oxygen enriched stream from the lower pressure column, one of which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption pre-purifier unit. All or a portion of the first high purity oxygen enriched stream is vaporized in the main heat exchanger to produce the gaseous oxygen products.

Increased onstream time for cryogenic separation processes

In a temperature swing adsorption (TSA) system upstream of a cold box, an apparatus for purifying a fluid, includes a chemisorption guard bed disposed between and in fluid communication with the TSA system and the cold box for removing impurities from the fluid. In a temperature swing adsorption (TSA) system including first and second adsorption vessels, and a cold box, the improvement includes a chemisorption guard bed disposed in at least one of the first and second vessels.

Method for the low-temperature decomposition of air and air separation plant

Es wird ein Verfahren zur Tieftemperaturzerlegung von Luft (AIR) in einer Luftzerlegungsanlage (100) mit einem Hauptluftverdichter (2), einem Hauptwärmetauscher (4) und einem Destillationssäulensystem (10) mit einer auf einem ersten Druckniveau betriebenen Niederdrucksäule (11) und einer auf einem zweiten Druckniveau betriebenen Hochdrucksäule (12) vorgeschlagen, bei dem ein Einsatzluftstrom (a), der die gesamte, der Luftzerlegungsanlage (100, 200) zugeführte Einsatzluft umfasst, in dem Hauptluftverdichter (2) auf ein drittes Druckniveau verdichtet wird, welches mindestens 2 bar oberhalb des zweiten Druckniveaus liegt, wobei von dem verdichteten Einsatzluftstrom (b) ein erster Anteil (c) mindestens einmal in dem Hauptwärmetauscher (4) abgekühlt und von dem dritten Druckniveau in einer ersten Entspannungsturbine (5) entspannt wird, ein zweiter Anteil (d) mindestens einmal in dem Hauptwärmetauscher (4) abgekühlt und ausgehend von dem dritten Druckniveau in einer zweiten Entspannungsturbine (6) entspannt wird, und ein dritter Anteil (e) weiter auf ein viertes Druckniveau verdichtet, mindestens einmal in dem Hauptwärmetauscher (4) abgekühlt und ausgehend von dem vierten Druckniveau entspannt wird, wobei Luft des ersten Anteils (c) und/oder des zweiten Anteils (d) und/oder des dritten Anteils (e) auf dem ersten und/oder auf dem zweiten Druckniveau in das Destillationssäulensystem (10) eingespeist wird. Es ist vorgesehen, dass der dritte Anteil (e) nacheinander in einem Nachverdichter (7), einem ersten Turbinenbooster und einem zweiten Turbinenbooster auf das vierte Druckniveau weiter verdichtet wird, und zum Entspannen des dritten Anteils (e) ein Dichtfluidexpander (8) verwendet wird, dem der dritte Anteil (e) in flüssigem Zustand und auf dem vierten Druckniveau zugeführt wird. Eine Luftzerlegungsanlage (100) ist ebenfalls Gegenstand der Erfindung. It is a method for the cryogenic separation of air (AIR) in an air separation plant (100) with a main air compressor (2), a ...

一种混合塔制氧方法

本发明公开了一种混合塔制氧方法，步骤如下：1、空气经自洁式空气过滤器过滤后进入空气压缩机压缩，进入空气预冷系统；2、空气在空冷塔中被冷却水以及被水冷塔和冷水机组冷却的冷冻水冷却降温，并经水洗涤，除掉水溶性杂质后进入分子筛纯化系统；3、空气中的水分、二氧化碳等筛除掉后进入分成四路：第一路进入分馏塔内冷却至液化温度‑168℃后分别进入下塔；第二路空气去膨胀机增压端，经冷却器冷却后进入主换热器换热后，经透平膨胀机进行制冷，膨胀后的空气进入上塔精馏；第三路空气在下塔精馏得到液氮和富氧液空，进上塔各物料经精馏后得到液氧、污氮气；第四路作为仪表气。通过上述方式，本发明既生产压力氧，又降低空压机压力，提高提取率。

Adsorbent bed support

An adsorbent vessel (104) and process for using the adsorbent vessel (104) subject to thermal swing expansion / contraction is disclosed where the adsorbent vessel (104) comprises a support screen (102) affixed to the adsorption vessel (104) subject to thermal swing expansion / contraction and where a first section of the support screen extends along a portion of the length of the adsorption vessel subject to thermal swing expansion / contraction in the axial direction and comprises apertures permitting gas permeation and where the first section of the support screen has a cross - section in the axial direction that is arcuate.

用于热增强变压吸附系统的加热器装置

本发明涉及一种温度增强变压吸附(TEPSA)工艺，其用于从气体混合物中移除至少两种成分，包括非强吸附的成分和较强吸附的成分，所述工艺包括使用一个单个加热器和至少两个吸附剂容器，在每个吸附剂容器中执行包括吸附阶段和后续再生阶段的反复循环。

超高纯度氮气和氧化发生器装置

本发明提供了一种以空气作为原料同时生产超高纯度氮气和超高纯度氧气的装置。将原料气加入第一蒸馏柱6的底部15,从上部蒸馏部分12和中部蒸馏部分13之间回收超高纯度液氮,从中部蒸馏部分13和下部蒸馏部分14之间回收没有高沸点组分的液体空气,将在底部15中收集的富氧液体空气通过膨胀阀31降压,然后将其送入氮气冷却器8作为冷却剂。在通过膨胀阀33降低所述的液体空气部分的压力后,将其送入第二蒸馏柱7,在此,从顶部21分离低沸点组分并从底部23回收超高纯度液氧。通过膨胀阀32对所述液体空气剩余部分降压,然后将其送入氮气冷却器作为冷却剂部分。因此,调节了流过下部蒸馏部分14的回流液的量并调节了加入第二蒸馏柱7的所述液体空气的量。

Heater arrangement for tepsa system

본 발명은, 덜 강하게 흡착되는 성분과 더 강하게 흡착되는 성분을 포함하는 적어도 2개의 성분을 가스 혼합물로부터 제거하기 위한 온도 강화 압력 스윙 흡착(TEPSA) 프로세스로서, 상기 프로세스는, 하나의 단일 히터와 적어도 2개의 흡착 용기를 사용하는 것을 포함하고, 각 흡착 용기에서는 흡착 시기와 이후의 재생 시기를 포함하는 반복 사이클이 수행되는 것인 TEPSA 프로세스에 관한 것이다. The present invention is a temperature-enhanced pressure swing adsorption (TEPSA) process for removing at least two components from a gaseous mixture comprising a less strongly adsorbed component and a more strongly adsorbed component, the process comprising: Comprising using two adsorption vessels, wherein in each adsorption vessel a repetitive cycle is carried out comprising adsorption timing and subsequent regeneration timing.

富氧后增压返流膨胀制氮机

本发明公开了一种富氧后增压返流膨胀制氮机，包含自洁式空气过滤器;原料空气经自洁式空气过滤器去掉杂质后由空气压缩机压缩，再经预冷机预冷后，进入纯化器；在纯化器中吸附后进入分馏塔;接着空气在分馏塔中经主换热器与返流之富氧气及氮气进行换热而冷却到饱和温度后进入精馏塔,在精馏塔的顶部得到高纯度氮气；这股高纯度氮气的一部份作为产品送至用户；另一部份经冷凝蒸发器冷凝液化,所得液氮的一部份作回流液；富氧液空在冷凝蒸发器内蒸发并经主换热器复热,然后在增压透平膨胀机膨胀；膨胀后的富氧气经主换热器复热至常温后出分馏塔，其中一部分经电加热器加热作为纯化器的再生气；本发明能耗低，节能效果明显。

空气液化分离装置的预处理精制装置、烃吸附剂、及原料空气的预处理方法

本发明涉及一种烃吸附剂，其是具有H-FER结构、或通过离子交换调整了其细孔直径的MOR结构的沸石。本发明的丙烷吸附剂是具有MFI结构的沸石。本发明的除去烃装置是具有按顺序叠层并充填有活性氧化铝、NaX型沸石、及所述吸附剂的吸附塔的TSA式预处理精制装置。本发明的降低空气液化分离装置内的液态氧中的烃的方法是在所述预处理精制装置中精制原料空气的方法。

Process and installation for feeding an air separation apparatus

본 발명은 공기 분리 장치(A)에 관한 것으로, 이 장치에 선택적으로 전용인 단열 압축기(1)에서 압축된 유동에 의해 공급된다. 발생한 부가적인 열은 여러 방법으로 이용한다. The present invention relates to an air separation device (A), which is supplied by compressed flow in an adiabatic compressor (1) which is optionally dedicated to this device. The additional heat generated is used in several ways.

Nitrogen gas production equipment

PSA process for removel of nitrogen oxides from gas

A process for removing nitrogen oxides, as well as water and carbon dioxide, from gas streams containing at least 0.2 ppm by volume of nitrogen oxides by passing the gas stream through an alumina adsorbent and a zeolite adsorbent, preferably 13X-zeolite. The process has utility in front end cleanup of air prior to cryogenic distillation of the air where nitrogen oxides would otherwise freeze under the cryogenic processing.

Cryogenic rectification system for producing lower purity oxygen

고압 공급공기 스트림이 저압 컬럼의 하단을 리보일하는데 사용되고, 저압 공급공기 스트림이 고압 컬럼으로 직접 공급되는 것을 특징으로 하는 저온 정류 시스템이 기재되어 있다. A low temperature rectification system is described wherein a high pressure feed air stream is used to reboile the bottom of the low pressure column and the low pressure feed air stream is fed directly to the high pressure column.

Air purification

FIELD: technological processes. SUBSTANCE: method of reducing water level, carbon dioxide and nitrogen oxide in flow of supplied air before cryogenic distillation, containing: a) forcing said flow of supplied air at temperature and pressure feed in feed direction through first adsorbent, which Henry selectivity for CO 2 above N 2 O measured at 30 °C, is at least 12.5, and then through second adsorbent, which Henry constant for adsorption of CO 2 , measured at 30 °C, is less than 1,020 mmol/g/atm and which Henry selectivity for CO 2 above N 2 O measured at 30 °C, is at most 5; b) said passage of supplied air flow termination in said first and second adsorbents after first period of time; c) lower gas pressure in contact with first and second adsorbents to second pressure is smaller than feed pressure; d) passage of heated regenerating gas at second pressure and temperature which varies from 20 to 80 °C in at least second adsorbent in direction opposite that of supply, during second period of time and then passing second regenerating gas at second pressure and temperature is less than temperature of heated regenerating gas, in first and second adsorbents in direction opposite that of feed during third period of time; e) termination of regenerating gas passage in first and second adsorbents; f) repeated high pressure gas in contact with first and second adsorbents to supply pressure and g) repeating steps a) to f), where second adsorbent occupies from 25 to 40 vol% of total volume of first and second adsorbents and where temperature of heated regenerating gas is by 10 to 60 °C higher than that of second temperature regenerating gas, which of them above; and device adsorbent containing first and second adsorbent, given above, to reduce levels of water, carbon dioxide and nitrogen oxide in flow of supplied air, in which adsorbents regenerated as described above. EFFECT: reduced level of water, carbon dioxide and nitrogen oxide in flow of supplied air before cryogenic ...

Method and apparatus for purification of the air to be used as raw material in cryogenic air separation

본 발명의 공기 액화분리에 있어서의 원료 공기의 정제방법은 공기 액화분리를 위한 원료 공기를 온도 스윙 흡착법에 의하여 정제하는 공정을 가지며 흡착탑에 충전된 이산화탄소 흡착제층의 전 영역을 이산화탄소의 물질 이동대로서 사용한다. 또, 본 발명의 공기 액화분리에서의 원료 공기의 정제장치는 적어도 2개의 흡착탑을 가지며, 상기 흡착탑에는 수분 흡착제와 이산화탄소 흡착제가 적층 충전되고, 상기 이산화탄소 흡착제의 충전량이 흡착 공정 종료시의 이산화탄소의 물질 이동대가 상기 이산화탄소 흡착제에서 점유하는 영역의 이산화탄소 흡착제량과 동량이고, 온도 스윙 흡착법을 이용한다. 공기 액화분리, 원료 공기, 온도 스윙 흡착법, 흡착탑, 물질 이동대, 정제방법, 정제장치

Method for removing steam and carbon dioxide from gas

(57)【要約】 【課題】 ガスから水蒸気と二酸化炭素を除去する方法 を提供する。 【解決手段】 本発明の空気予備精製プロセスは、第１ の工程として圧力スイング吸着プロセス（活性アルミナ を含んでいる吸着剤床に空気を通し、これによって供給 空気から実質的に全ての水分と殆どの二酸化炭素を除去 する）を、そして第２の工程として温度スイング吸着プ ロセス（乾燥した供給空気を二酸化炭素選択性吸着剤の 床に通し、これによって供給空気中に残留している二酸 化炭素の実質的に全てを除去する）を含む。供給空気 を、第１と第２の工程の間において、水素酸化触媒床お よび一酸化炭素酸化触媒床に通して、供給空気中の水素 と一酸化炭素をそれぞれ水蒸気と二酸化炭素（これらの 成分は、第２の工程時に供給空気から除去される）に転 化させることができる。

Cryogenic rectification system for producing lower purity oxygen

一种用于生产低纯氧的低温精馏系统，其中使用 高压进料空气流使低压塔塔底物再沸，并且低压进料 空气流直接加入高压塔。

Temperature swing adsorption method

(57)【要約】 【課題】 原料ガスから少なくとも二酸化炭素と水を除 去して精製ガスを作るための温度スイング吸着法を提供 する。 【解決手段】 原料ガスから全ての水と二酸化炭素の少 なくとも大部分とを吸着するのにアルミナを使用する。 随意に、更に二酸化炭素と炭化水素類を除去するため下 流にゼオライトの領域を設ける。

Core-in-shell composite adsorbent for use in PSA prepurifiers

본 발명은 대체적으로 불활성 고밀도 코어 상에 적어도 제올라이트 함유 CO 2 제거 흡착제 및 결합제를 포함하는 내마멸성 코어-인-쉘 복합 흡착제에 관한 것이다. 내마멸성 코어-인-쉘 복합 흡착제는 마멸 손실이 약 2 중량% 미만이다. 코어-인-쉘 복합 흡착제는, 바람직하게는 극저온 공기 분리 전에 PSA 사전정제 공정에 사용되는 순환 흡착 공정에서 다층 흡착 시스템에 바람직하게 사용된다.

Air separation method integrating combustion turbine

A high pressure combustion turbine (109) is integrated with a double column cryogenic air separation system by cooling (111,113) and purifying (115) a portion (11) of the compressed air (6) from the combustion turbine compressor (105), work expanding (118) a first portion (17) of the resulting cooled air (15), and introducing the expanded air (19) into the lower pressure column (119). A second portion (21) of the resulting cooled air (15) is further cooled (117), throttled (121), and introduced (23) into the high pressure column. A nitrogen product stream (35) is returned to the turbine combustor (101), and a portion (41) of the nitrogen product stream optionally is cooled (143,117), throttled (133), and recycled (31) into the higher pressure column (123). Preferably the higher pressure column operates at an absolute pressure which is 20% to 85% of the absolute pressure of the compressed air from the combustion turbine air compressor. Optionally oxygen-rich liquid (33) or nitrogen-rich liquid (45) withdrawn from the higher pressure column (123) during a period of low nitrogen product demand is stored, and withdrawn from storage to supplement feed to the lower pressure column (119) during periods of high nitrogen product demand. Alternatively, high purity liquid oxygen (51) is withdrawn from the lower pressure column (119) during a period of low oxygen product, stored, and withdrawn from storage during periods of high oxygen product demand to supplement oxygen product withdrawn from the higher pressure column. <IMAGE>

Method and device for generating two purified partial air streams

본 발명은 상이한 압력들 하에서 정화된 두 개의 부분 공기 스트림들을 발생시키기 위한 방법 및 장치에 관한 것이다. 전체 공기 스트림(1)은 제 1 전체 공기 압력으로 압축된다. 압축된 전체 공기 스트림(5)은 열 교환(4, 6)에 의해 제 1 전체 공기 압력 하에서 냉각수에 의해 냉각된다. 전체 공기 스트림(5)을 냉각하기 위한 냉각수와의 열 교환은 적어도 부분적으로 제 1 직접 접촉 냉각기(6)에서의 직접 열 교환으로서 수행된다. 냉각된 전체 공기 스트림(9)은 제 1 부분 공기 스트림(10) 및 제 2 부분 공기 스트림(11)으로 분리된다. 제 1 부분 공기 스트림(10)은 제 1 전체 공기 압력 하에서 제 1 정화 장치(18)에서 정화되고 제 1 정화된 부분 공기 스트림(19)을 발생시킨다. 제 2 부분 공기 스트림(11)은 고압(12)으로 재압축되고 이는 제 1 전체 공기 압력보다 더 높다. 재압축된 제 2 부분 공기 스트림(14)은 직접 열 교환(13,15)에 의해 제 2 직접 접촉 냉각기(15)에서 냉각수에 의해 냉각된다. 냉각된 제 2 부분 공기 스트림(17)은 제 2 정화 장치(30)에서 더 높은 압력 하에서 정화되어, 제 2 정화된 부분 공기 스트림(31)을 발생시킨다. The present invention relates to a method and apparatus for generating two partial air streams purified under different pressures. The entire air stream 1 is compressed to a first total air pressure. The compressed total air stream (5) is cooled by cooling water under a first total air pressure by heat exchange (4, 6). The heat exchange with the cooling water for cooling the total air stream 5 is carried out at least in part as direct heat exchange in the first direct contact cooler 6. The cooled total air stream (9) is separated into a first partial air stream (10) and a second partial air stream (11). The first partial air stream 10 is purified in the first purifier 18 under a first total air pressure and produces a first purified partial air stream 19. The second partial air stream 11 recompresses to a high pressure 12 which is higher than the first total air pressure. The recompressed second partial air stream 14 is cooled by the cooling water in the second direct contact cooler 15 by direct heat exchange 13,15. The cooled second partial air stream 17 is purified at a higher pressure in the second purifier 30 to produce a second purified partial air stream 31.

Preparation process of oxygen

本发明公开了一种氧气的制备工艺，属于空气分离技术领域，包括如下步骤，S1、过滤：将空气通入到空气过滤器中，提高空气的纯度；S2、压缩：将过滤后的空气通入到空气压缩机中，将空气加压成高压气体；S3、冷却：将压缩后的空气通入到空气水冷塔中进行水冷至5~10℃；S4、制冷：制冷使空气中的水蒸气液化；S5、纯化：将冷却后的空气通入到分子筛吸附器中，去除空气中含有的二氧化碳、氢化物和水；S6、分馏：纯化后的空气通入到分馏塔中，分馏出不同的气体；S6、储存：使液体氧经过板翅式换热器复热后形成气体，并将气体送入气囊中存储；S8、装瓶：使氧气压缩机与气囊连接，将气囊里的氧气压缩至氧气罐中，本发明具有使空气中的氧气空分更彻底的效果。

Method and apparatus for producing clean dry air having application to air separation

본 발명은 청정 건조 공기 생성물 스트림을 생성하기 위한 방법 및 장치에 관한 것이다. 본 방법 및 장치에 따르면, 압축 공급 공기 스트림은 하나의 흡착 베드내로 유입되어 수분 및 이산화탄소를 흡착하여 제 1 중간 생성물 스트림을 생성한다. 탄화수소, 일산화탄소 및 수소와 같은 제 1 중간 생성물 스트림내에 함유된 불순물은 촉매 반응하여, 이 촉매 반응으로부터 생성된 부가적인 이산화탄소 및 수분을 함유한 제 2 중간 생성물 스트림을 생성한다. 제 2 중간 생성물 스트림은 촉매 반응에 의해 생성된 부가적인 수분 및 이산화탄소를 흡착하는 다른 흡착 베드내로 유입되어 청정 건조 공기 생성물 스트림을 생성한다. 본 발명은 청정 건조 공기 생성물 스트림을 공급하는데 단독으로 사용될 수 있다. 또한, 초고순도 산업용 가스 생성물을 생성하도록 설계된 공기 분리 플랜트의 사전정화 유닛으로 사용될 수 있다. The present invention relates to a method and apparatus for producing a clean dry air product stream. According to the present method and apparatus, a compressed feed air stream is introduced into one adsorptive bed to adsorb moisture and carbon dioxide to produce a first intermediate product stream. Impurities contained in the first intermediate product stream, such as hydrocarbons, carbon monoxide and hydrogen, catalyze the reaction to produce a second intermediate product stream containing additional carbon dioxide and water generated from the catalytic reaction. The second intermediate product stream is introduced into another adsorptive bed which adsorbs additional moisture and carbon dioxide produced by the catalytic reaction to produce a clean dry air product stream. The present invention can be used alone to feed clean dry air product streams. It can also be used as a prepurification unit of an air separation plant designed to produce ultra high purity industrial gas products.

Method and device for manufacturing low purity oxygen

(57)【要約】 【課題】 原料空気を液化精留して低純度酸素を製造す る際の酸素動力原単位を低減する。 【解決手段】 原料空気を高圧塔２の操作圧力より低い 圧力に圧縮し、予冷後に精製設備５で精製し、精製原料 空気を第１原料空気と第２原料空気とに分岐し、第１原 料空気を膨張タービン６で膨張させるとともに第２原料 空気を昇圧機７で昇圧し、主熱交換器８で冷却した第１ 原料空気を低圧塔１に、第２原料空気を高圧塔２に、そ れぞれ導入して液化精留し、低圧塔１の下部から製品酸 素を回収する。

Ultra high purity nitrogen and oxygen production equipment

Core-in-shell composite adsorbent for use in psa prepurifiers

The present invention relates generally to an attrition resistant core-in- shell composite adsorbent comprising at least a zeolite-containing CO 2 removal adsorbent and a binder on an inert dense core. The attrition resistant core-in-shell composite adsorbent has an attrition loss of less than about 2 wt%. The core-in- shell composite adsorbent is preferably used in a multi-layered adsorption system in a cyclic adsorption process, preferably used in a PSA prepurification process prior to cryogenic air separation.

Core-in-shell composite adsorbent for use in PSA prepurifiers

The present invention relates generally to an attrition resistant core-in-shell composite adsorbent comprising at least a zeolite-containing CO 2 removal adsorbent and a binder on an inert dense core. The attrition resistant core-in-shell composite adsorbent has an attrition loss of less than about 2 wt %. The core-in-shell composite adsorbent is preferably used in a multi-layered adsorption system in a cyclic adsorption process, preferably used in a PSA prepurification process prior to cryogenic air separation.

A rapid cycle pressure swing adsroption process and adsorbent laminates for use therein

물, 이산화탄소, 아산화질소, 및 하나 이상의 탄화수소 중 적어도 하나를 극저온 공기 분리 이전에 공급 공기 스트림으로부터 제거하기 위한 급속 사이클 압력 변동 흡착(RCPSA) 공기 정제 공정, 장치, 및 디바이스. Rapid cycle pressure swing adsorption (RCPSA) air purification processes, apparatus, and devices for removing at least one of water, carbon dioxide, nitrous oxide, and one or more hydrocarbons from a feed air stream prior to cryogenic air separation.

Air separation device

Process and installation for feeding air separation apparatus

将一种在绝热压缩机(1)中压缩的流体送入空气分离装置(A)，该绝热压缩机有选择地附设于所述装置。所产生的附加热可以几种方式被利用。

Purification of air

본 발명은, 정제된 공기 스트림의 저온 증류 과정 이전에, 물을 흡착하는 알루미나와 같은 제1 흡착제, 이산화탄소를 흡착하는 13X 제올라이트와 같은 제2 흡착제, 및 아산화질소와 임의의 에틸렌을 흡착하는 무결합제 칼슘 교환형 X 제올라이트와 같은 제3 흡착제를 사용하여 온도 스윙 흡착에 의해 공기 원료 스트림으로부터 이산화탄소, 물, 아산화질소 및 임의의 에틸렌을 제거하는 방법에 관한 것이다. The present invention is directed to a first adsorbent such as alumina that adsorbs water, a second adsorbent such as 13X zeolite that adsorbs carbon dioxide, and a binder that adsorbs nitrous oxide and any ethylene prior to the cold distillation of the purified air stream. A method of removing carbon dioxide, water, nitrous oxide and any ethylene from an air feed stream by temperature swing adsorption using a third adsorbent such as calcium exchanged X zeolite.

Air liquefaction separation apparatus and heating method thereof

Air purification process

An air prepurification process which includes, as a first step, a pressure swing adsorption process in which the air is passed through a bed of adsorbent which contains activated alumina, thereby effecting removal of substantially all moisture and most carbon dioxide from the feed air and as a second step, a temperature swing adsorption process in which the dried feed air is passed through a bed of carbon dioxide-selective adsorbent, thereby removing substantially all of the carbon dioxide remaining in the feed air. The feed air may be passed through beds of hydrogen oxidation and carbon monoxide oxidation catalysts between the first and second steps to convert any hydrogen and carbon monoxide in the feed air to water vapor and carbon dioxide, respectively, these components being removed from the feed air during the second step. The feed air may be optionally passed through a layer of a hydrocarbon selective adsorbent between the first and second steps to remove hydrocarbons such as ethylene, propylene and propane.

Method and device for the cryogenic decomposition of air

该方法和设备用于在用于氮氧分离的蒸馏塔系统中低温分离空气，该蒸馏塔系统包括第一高压塔(23)和低压塔(25，26)以及三个冷凝器-蒸发器，即高压塔-塔顶冷凝器(27)、低压塔-塔底蒸发器(28)和辅助冷凝器(29；228)。将第一进料空气流在主热交换器(20，21)中冷却。将经冷却的第一进料空气流(22)在第一压力下导入第一高压塔(23)中。在高压塔-塔顶冷凝器(27)中使来自第一高压塔(23)的气态塔顶氮气(44，45)冷凝。将在高压塔-塔顶冷凝器(27)中冷凝的塔顶氮气(46)的至少一部分(47)作为回流液体送至第一高压塔(23)。低压塔(25，26)的塔底液体(66)的一部分在低压塔-塔底蒸发器(28)中通过与冷凝的加热流体(58)的间接热交换而蒸发。低压塔(25，26)的塔底液体(66)的未蒸发的部分(67)在辅助冷凝器(29；228)中至少部分地蒸发。在辅助冷凝器(29；228)中蒸发的液体(68)的至少一部分作为气态氧气产品(69)获得。该用于氮氧分离的蒸馏塔系统此外还包括第二高压塔(24)。将第二进料空气流(35)在主热交换器(20，21)中冷却，随后在高于第一压力的第二压力下导入第二高压塔(24)中。将第二高压塔(24)的塔顶气体(58)的至少一部分在低压塔-塔底蒸发器(28)中用作加热流体。

Nitrogen production method and nitrogen production apparatus

액체 질소를 제조하기 위한, 질소 회수율이 높고, 에너지 효율이 높은 질소 제조 방법 및 질소 제조 장치를 제공한다. 원료 공기의 일부를, 주 열교환기(1)의 전단에서 팽창시켜서 냉각하고, 팽창되지 않은 나머지 원료 공기를 주 열교환기(1) 내부에서 예랭하기 위한 한랭으로서 이용한다. 또한, 주 열교환기(1) 내부에서 예랭된 원료 공기의 일부를 주 열교환기(1) 외부로 취출하여 팽창시켜서 냉각하고, 팽창되지 않은 나머지 예랭된 원료 공기를 주 열교환기(1) 내부에서 냉각하기 위한 한랭으로서 이용한다.

Process and installation for feeding air separation apparatus

将一种在绝热压缩机(1)中压缩的流体送入空气分离装置(A),该绝热压缩机有选择地附设于所述装置。所产生的附加热可以几种方式被利用。

Low temp. purification of gases

本发明涉及一种从原料气流去除杂质：一氧化碳、二氧化碳、水蒸气以及任选的氢的方法，它包括开始去除水和二氧化碳，把一氧化碳和氢分别氧化成二氧化碳和水蒸气，再去除氧化产物。本发明方法可以通过在多处理区中进行纯化来分批或连续进行，即采用其中一个或多个区正被再生，而另外的一个或多个区正在纯化原料气流。

Process for air separation by liquefaction and rectification

826,298. Cold separation of air. SOC. L'AIR LIQUIDE, SOC. ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE. Sept. 10, 1957 [Sept. 25, 1956], No. 28532/57. Class 8(2). In an air rectification process wherein liquid oxygen is withdrawn from the base of the low pressure section 8 of a conventional double column 6 irto a reservoir 20, and gaseous nitrogen is withdrawn through a duct 22 and used to cool and partly liquefy feed air traversing one or other of a pair of alternating regenerators 4A, 4B, extra refrigeration is supplied to column 8 by feeding liquid air at a constant rate from an external reservoir 61 which is itself supplied by a compressor 38 discharging through a purifier 39 and heat exchangers 31, 30 in countercurrent to liquid oxygen from reservoir 20 and also in countercurrent to an unliquefied portion of air leaving exchanger 31 after expansion in an engine 52. In a modification wherein the auxiliary air liquefaction plant is remote from the rectification plant, liquid oxygen is transported therefrom in a container and forced by one or both of a pair of pumps in parallel through the exchangers 30, 31 and when empty of liquid oxygen the container is filled with liquid air and returned to the rectification plant.

Purification of air

A process for the reduction of the level of water, carbon dioxide and nitrous oxide in a feed air stream prior to cryogenic distillation, comprising: a) passing said feed air stream at a feed temperature and a feed pressure in a feed direction through a first adsorbent, whose Henry's Law selectivity for CO2 over N2O measured at 30 °C is at least 12.5, and subsequently through a second adsorbent, whose Henry's Law constant for the adsorption of CO2 measured at 30 °C is less than 1020 mmol/g/atom and whose Henry's Law selectivity for CO2 over N2O measured at 30 °C is at most 5; b) ceasing after a first time period to pass said feed air stream to said first and second adsorbents; c) depressurising the gas in contact with the first and second adsorbents to a second pressure lower than the feed pressure; d) passing a heated regenerating gas at the second pressure and at a temperature which is between 20 °C and 80 °C to at least the second adsorbent in a direction opposite to the feed direction for a second time period, and subsequently passing a second regenerating gas at the second pressure and at a temperature less than the temperature of the heated regenerating gas to the first and second adsorbents in a direction opposite to the feed direction for a third time period; e) ceasing passing regenerating gas to the first and second adsorbents; f) re-pressurising the gas in contact with the first and second adsorbents to the feed pressure; and g) repeating steps a) to f), wherein the second adsorbent occupies from 25% to 40% by volume of the total volume of the first and second adsorbents, and wherein the temperature of the heated regenerating gas is from 10 °C to 60 °C higher than the feed temperature or the temperature of the second regenerating gas, whichever is the higher; and the use of an apparatus comprising a first adsorbent and a second adsorbent as defined above for the reduction of the levels of water, carbon dioxide and nitrogen in a feed air stream ...

Purification of gases using solid adsorbents

在深冷分离氧和氮前对空气进行纯化以除去水和二氧化碳及其它污染物时,水和二氧化碳被吸附至固体吸附剂上,并被定期解吸附以再生吸附剂,再生是通过通入加热的再生气进行的,其中加入再生气以产生解吸的热量不多于吸附水和二氧化碳时所释放的吸附热的90%。该过程也可用于从其它气流中除去其它污染物。

Method for producing ultra high purity nitrogen

본 발명은 0.5vppm이하의 일산화탄소를 함유하는 질소 또는 공기를 제조하기 위한 장치 및 방법에 관한 것이다. 본 발명의 방법은 약 100vppm이하의 일산화탄소를 함유하는 질소스트림 또는 공기 스트림을 상기 질소 스트림 또는 공기 스트림으로 부터 거의 모든 일산화탄소를 제거하는, 칼슘-교환된 유형 X 제올라이드, 유형 5A제올라이드 또는 13X제올라이드를 함유하는 흡착베드에서 극저온 온도 가변식 흡착 처리함을 포함한다.

Nitrogen production method and nitrogen production apparatus

提供一种用于制造液氮的、氮回收率高且能量效率高的氮制造方法和氮制造装置。将原料空气的一部分在主热交换器(1)的前段膨胀并冷却，将没有膨胀的剩余原料空气作为用于在主热交换器(1)内部预冷的寒冷利用。另外，将主热交换器(1)内部预冷了的原料空气的一部分向主热交换器(1)外部取出使其膨胀并冷却，将没有膨胀的剩余的预冷了的原料空气作为用于在主热交换器(1)内部冷却的寒冷利用。

Patent FR2148903A5

PROCESS AND DEVICE FOR TREATING GAS STREAMS BY OXIDATION AND / OR CATALYTIC REDUCTION

INTEGRATED AIR SEPARATION AND ENERGY GENERATION PROCESS AND INSTALLATION FOR CARRYING OUT SUCH A PROCESS

EXTERNAL HIGH SURFACE ZEOLITHIC ADSORBENTS, PROCESS FOR THEIR PREPARATION AND USES THEREOF

La présente invention concerne l'utilisation, pour la séparation de gaz, d'au moins un matériau adsorbant zéolithique comprenant au moins une zéolithe de type FAU, ledit adsorbant présentant une surface externe supérieure à 20 m2.g-1, une teneur en phase non zéolithique (PNZ) telle que 0 < PNZ ≤ 30%, et de ratio atomique Si/Al compris entre 1 et 2,5. L'invention concerne également un matériau adsorbant zéolithique présentant un rapport Si/Al tel que 1 ≤ Si/Al < 2,5, un volume mésoporeux compris entre 0,08 cm3.g-1 à 0,25 cm3.g-1, un rapport (Vmicro - Vméso)/Vmicro compris entre -0,5 et 1,0, bornes non incluses, et une teneur en phase non zéolithique (PNZ), telle que 0 < PNZ ≤ 30%. The present invention relates to the use, for gas separation, of at least one zeolitic adsorbent material comprising at least one FAU-type zeolite, said adsorbent having an external surface greater than 20 m 2 g -1, a phase content non-zeolitic (PNZ) such that 0 <PNZ ≤ 30%, and Si / Al atomic ratio between 1 and 2.5. The invention also relates to a zeolitic adsorbent material having an Si / Al ratio such that 1 ≤ Si / Al <2.5, a mesoporous volume of between 0.08 cm3g-1 to 0.25 cm3g-1, a ratio (Vmicro-Vmeso) / Vmicro between -0.5 and 1.0, terminals not included, and a non-zeolitic phase (PNZ) content, such that 0 <PNZ ≤ 30%.

Low pressure air gas separation plant and process

Installation de séparation des gaz de l’air comprenant dans le sens de circulation du flux d’air : un moyen de compression (1) permettant de comprimer le flux d’air à une pression P1 comprise entre 1,15 bar abs et 2 bar abss, une unité d’adsorption de type TSA (2), et une unité de distillation cryogénique (3), avec l’unité d’adsorption comprenant au moins deux adsorbeurs A et B présentant chacun une enveloppe de forme parallélépipédique disposée horizontalement et comprenant: une entrée et une sortie du flux d’air une masse adsorbante en lit fixe de forme également parallélépipédique dont les faces sont parallèles aux faces de l’enveloppe ; et un ensemble de volumes permettant la traversée de la masse adsorbante par le flux d’air horizontalement, sur toute sa section et sur toute son épaisseur. Figure de l’abrégé : Fig. 2 Air gas separation installation comprising in the direction of circulation of the air flow: compression means (1) making it possible to compress the air flow to a pressure P1 of between 1.15 bar abs and 2 bar abss, an adsorption unit of TSA type (2), and a cryogenic distillation unit (3), with the adsorption unit comprising at least two adsorbers A and B each having a parallelepiped-shaped envelope arranged horizontally and comprising : an inlet and an outlet for the air flow, an adsorbent mass in a fixed bed of also parallelepiped shape, the faces of which are parallel to the faces of the envelope; and a set of volumes allowing the flow of air to pass through the adsorbent mass horizontally, over its entire section and over its entire thickness. Abstract figure: Fig. 2

Patent FR2729582B1

METHOD AND INSTALLATION OF AIR CLEANING USING AN ADSORPTION WHEEL

Dispositif d'épuration d'un flux d'air présentant une humidité relative supérieure à 50% comprenant dans le sens de circulation du flux d'air: - au moins une roue d'adsorption rotative comprenant un adsorbant réparti en un secteur d'adsorption, un secteur de régénération, et un secteur de purge, - une unité de distillation d'air, et - un conduit entre l'unité de distillation et la roue d'adsorption de manière à pouvoir utiliser le flux résiduaire de l'unité de distillation comme gaz de régénération et/ou de purge de l'adsorbant de la roue d'adsorption, avec la roue d'adsorption apte à subir une rotation de manière à ce que la partie de l'adsorbant se trouvant dans le secteur d'adsorption passe dans le secteur de régénération, la partie de l'adsorbant se trouvant dans le secteur de régénération passe dans le secteur de purge, et la partie de l'adsorbant se trouvant dans le secteur de purge passe dans le secteur d'adsorption. Device for purifying an air flow having a relative humidity greater than 50% comprising in the flow direction of the air flow: at least one rotary adsorption wheel comprising an adsorbent distributed in an adsorption sector , a regeneration sector, and a purge sector, - an air distillation unit, and - a conduit between the distillation unit and the adsorption wheel so as to be able to use the residual flow of the distillation unit. distillation as a regeneration and / or purge gas of the adsorbent of the adsorption wheel, with the adsorption wheel rotatable so that the part of the adsorbent being in the sector of adsorption adsorption passes into the regeneration sector, the portion of the adsorbent in the regeneration sector passes into the purge sector, and the portion of the adsorbent in the purge sector passes into the adsorption sector.

PROCESS AND INSTALLATION FOR AIR PURIFICATION AND SEPARATION BY CRYOGENIC ROUTE WITHOUT PRECOOLING

PROCESS AND PLANT FOR PRODUCING OXYGEN BY AIR DISTILLATION

Compressed air purification, esp. prior to distillation

The removal of CO and H2 traces from freshly compressed air, which also contains CO2 and H2O impurities, involves: (a) contacting the compressed air stream, at the compressor delivery temp., with a bed of CO oxidation catalyst; (b) cooling the resulting intermediate air stream to ambient temp.; (c) contacting the stream with an adsorbent to adsorb CO2 and H2O; and (d) contacting the stream with a H2-trapping adsorbent to obtain dry pure compressed air at ambient temp.. Also claimed are: (i) the methods of distilling air under pressure, esp. for producing ultra-pure nitrogen, the process involving preliminary compressed air purification by the above process; and (ii) the compressed air purification plant for carrying out the above process, comprising a catalytic treatment zone (5) having an oxidation catalyst particle bed (10); a cooling zone having a heat exchanger (6); and an adsorption zone (7) having a first bed (8a', b') for adsorbing H2O and CO2 and a second bed (8a", b") for adsorbing H2. The catalyst in (a) comprises copper or a platinum gp. metal (selected from Os, Ir, Pd, Rh, Ru and Pt), pref. supported on alumina, silica or zeolite particles. The adsorbent in (c) is selected from alumina, silica or zeolites and molecular sieves. The adsorbent in (d) is selected from Os, Ir, Pd, Rh, Ru and Pt, pref. supported on alumina, silica or zeolite particles.

METHOD AND INSTALLATION FOR SUPPLYING AN AIR SEPARATION APPARATUS

Method and installation for producing oxygen and/or nitrogen under pressure

In this air distillation method, of the type using a liquid oxygen pump (14) and with vaporisation of liquid oxygen under pressure, use is made of at least three superchargers (9 to 11), two (9, 10) of which are mounted in series and supply the heat-exchange line with air at a high oxygen-vaporisation pressure. Air is withdrawn between these two superchargers, expanded to the medium pressure and introduced into the body of the medium-pressure column (5), and at least one (11) of the three superchargers consumes the mechanical energy developed by the turbine (12).

METHOD AND INSTALLATION FOR SUPPLYING AN AIR SEPARATION APPARATUS

Installation and process for separating gases from air using a parallelepiped shaped adsorber

Installation de séparation des gaz de l’air comprenant dans le sens de circulation du flux d’air : un moyen de compression (C) permettant de comprimer le flux d’air à une pression P1 comprise entre 1,15 bar abs et 2 bar abs, une unité d’adsorption de type TSA (A), et une unité de distillation cryogénique (D), avec l’unité d’adsorption comprenant au moins deux adsorbeurs A1 et A2 présentant chacun une enveloppe de forme parallélépipèdique disposée horizontalement et comprenant : une entrée et une sortie du flux d’air, deux masses adsorbantes en lit fixe présentant chacune une forme également parallélépipédique dont les faces sont parallèles aux faces de l’enveloppe, et un ensemble de volumes permettant que la traversée des deux masses adsorbantes par le flux d’air s’effectue horizontalement, en parallèle, sur toute la section de chacune des masses adsorbantes et sur toutes leurs épaisseurs. Figure de l’abrégé : Fig. 2 Air gas separation installation comprising in the direction of circulation of the air flow: compression means (C) making it possible to compress the air flow to a pressure P1 of between 1.15 bar abs and 2 bar abs, an adsorption unit of TSA type (A), and a cryogenic distillation unit (D), with the adsorption unit comprising at least two adsorbers A1 and A2 each having a parallelepiped shaped envelope arranged horizontally and comprising : an inlet and an outlet of the air flow, two adsorbent masses in a fixed bed each having a parallelepipedal shape, the faces of which are parallel to the faces of the envelope, and a set of volumes allowing the passage of the two adsorbent masses by the air flow takes place horizontally, in parallel, over the entire section of each of the adsorbent masses and over all their thicknesses. Abstract figure: Fig. 2

PROCESS AND DEVICE FOR TREATING GAS STREAMS BY OXIDATION AND / OR CATALYTIC REDUCTION

Procédé de purification d'un flux gazeux, en l'une au moins des impuretés susceptibles d'être oxydées et/ ou réduites qu'il contient, dans lequel on soumet ledit flux gazeux à au moins les étapes suivantes : (a) compression du flux gazeux à une pression supérieure à la pression atmosphérique,(b) mise en contact du flux gazeux comprimé avec au moins un premier lit de particules d'un matériau contenant au moins un peroxyde métallique, et(c) mise en contact du flux gazeux issu de l'étape (b) avec au moins un second lit d'au moins un catalyseur. Process for purifying a gas stream, into at least one of the impurities liable to be oxidized and / or reduced that it contains, in which said gas stream is subjected to at least the following steps: (a) compression of the gas stream at a pressure greater than atmospheric pressure, (b) bringing the compressed gas stream into contact with at least a first bed of particles of a material containing at least one metal peroxide, and (c) contacting the gas stream resulting from step (b) with at least a second bed of at least one catalyst.

METHOD AND APPARATUS FOR SEPARATING THE CONSTITUENTS OF AIR BY CRYOGENY

Impure oxygen@ large amt. prodn. avoiding large dia. low pressure column - by distn. of air using a double distn. column with medium and low pressure columns, avoiding extra distn. column mfr., utilising purificn. device, compressor and turbine

The prodn. comprises the distn. of air in an installation comprising a principal air compressor (1), a device (2) for purifying air by adsorption, a heat exchanger (3) and a double distn. column (4) with a medium pressure column is released into a turbine (11), using at least part of the mechanical energy generated by the turbine to compress (in 10) at least part of the air from the principal air compressor and the gas is used to regenerate the adsorbent in the purifn. device. Installation for producing oxygen at a purity of less than ca. 97% comprises a principal air compressor (1), a device (2) for purifying air by adsorption, a thermal exchanger (3) and a double distn. column (4) with a medium pressure column (5) and a low pressure column (6). The installation also has first a turbine (11) for the release of gas, with the inlet connected to the medium pressure column and the outlet is connected to the purifcn. device, and second an air compressor (10) which is driven by the mechanical energy developed by the turbine. The turbine is pref. fed at a temp. close to or significantly below ambient, and part of the cold produced by the turbine is used to chill the air fed into the compressor (9,10) and/or the purificn. device (2). Or the regeneration gas is reheated (in 22) at the hot end of the thermal exchanger before introducing into the turbine and the temp. of the installation is ensured by the expansion of a circulating fluid in a second turbine (24). The compression (in 10) raises the air to the pressure in the medium pressure column. Oxygen is produced in liq. form in the low pressure column, taken by pump to a high pressure and vaporised in the thermal exchanger at the high pressure by heat exchange with the compressed air. The regeneration gas is nitrogen from the top of the medium pressure column or a gas extracted at an intermediate level from the column. The input to the turbine is at ca. ambient temp. or a temp. significantly below ambient and the thermal ...

Apparatus and method for air separation by cryogenic distillation

Un appareil de séparation d’air comprend une double colonne, des moyens (B) pour envoyer de l’air à l’unité d’épuration à une pression supérieure à la pression atmosphérique d’au plus 1 bar, une conduite pour envoyer un premier débit d’air (8), épuré dans l’unité d’épuration, à l’échangeur de chaleur à une quatrième pression supérieure à la deuxième pression d’au plus 1 bar, une conduite pour envoyer le premier débit d’air épuré refroidi dans l’échangeur de chaleur à la deuxième colonne pour s’y séparer, un surpresseur (E), l’appareil ne comprenant aucun moyen de détente du premier débit. Figure de l’abrégé : Fig. 1 An air separation device comprises a double column, means (B) for sending air to the purification unit at a pressure above atmospheric pressure of at most 1 bar, a pipe for sending a first air flow (8), purified in the purification unit, at the heat exchanger at a fourth pressure greater than the second pressure by at most 1 bar, a pipe for sending the first air flow purified cooled in the heat exchanger in the second column to separate it, a booster (E), the apparatus comprising no means of expansion of the first flow. Figure of the abstract: Fig. 1

Method and apparatus for removing multiple components from a gas mixture

AIR SEPARATION METHOD BY CRYOGENIC DISTILLATION

Dans un procédé de séparation d'air par distillation cryogénique utilisant au moins un premier appareil de séparation d'air (A) dont l'air est épuré dans une première unité d'épuration (E) et au moins un deuxième appareil de séparation d'air (A') dont l'air est épuré dans une deuxième unité d'épuration (E), l'azote provenant d'un premier appareil de séparation étant utilisé pour régénérer la première unité d'épuration et la deuxième unité d'épuration. In a process for separating air by cryogenic distillation using at least a first air separation apparatus (A), the air of which is purified in a first purification unit (E) and at least one second separation apparatus air (A ') whose air is purified in a second purification unit (E), the nitrogen from a first separation apparatus being used to regenerate the first purification unit and the second unit of purification treatment.

METHOD AND APPARATUS FOR AIR SEPARATION BY CRYOGENIC DISTILLATION

Air separation

COMPRESSED AIR CLEANING PROCESS AND DEVICE, AIR DISTILLATION PROCESS AND INSTALLATION USING THEM

Purification of polluted air flow before distillation to produce high purity nitrogen comprises compressing, elimination of impurity by contact with particle bed, and catalytic oxidation or reduction

The air flow is compressed to a pressure greater than atmospheric and a first impurity is eliminated by placing the air flow in contact with a first particle bed containing metal peroxides, zeolites, aluminas or a mixture of these. Catalytic oxidation and/or reduction of a second impurity is then carried out by placing the air flow in contact with a second bed of catalyst. Purifying an air flow containing at least a first impurity (chosen from mercury, sulfurated components SxOy, nitrated components NxOy, hydrogen sulfide, CS2, NH3 and halogenated components) and a second impurity (chosen from hydrogen and carbon monoxide) comprises: (a) compression of the air flow to a pressure greater than atmospheric; (b) the elimination of a first impurity by placing the air flow in contact with a first particle bed containing metal peroxides zeolites, aluminas or mixtures of these; and (c) catalytic oxidation and/or reduction of a second impurity by contacting the air flow with a second bed of catalyst.

Dual feed air pressure nitrogen generator cycle

ABSTRACT A nitrogen generating air separation system is disclosed having dual air feeds to dual, low and high pressure, distillation columns wherein a reboiler-condenser is mounted overhead of the high pressure column and a vaporizer-condenser is mounted overhead of the low pressure column and preferably a portion of the high pressure air feed is expanded and desuperheated before being introduced into the low pressure column.

Method for operation of an air prepurifier which takes into account inlet air conditions

A pressure swing adsorber (PSA) air prepurifier includes at least a first adsorber and a second adsorber and a controller for controlling air feed to the first adsorber and the second adsorber. The invention is a "realtime" method for controlling cycle times for each adsorber and includes the following steps. During a determined time period, flow is measured to an adsorber that is coupled to an air inlet. An actual totalized flow to the on-line adsorber is accumulated, based upon the measured flow values. During this time, air feed conditions (e.g., temperature, pressure, relative humidity) are monitored and periodically, a maximum totalized flow to the adsorber is calculated, determined, at least in part, based upon the monitored air feed conditions. Periodically, the actual totalized flow value is compared to a current calculated maximum totalized flow value and upon a predetermined relationship therebetween being reached, the on-line adsorber is decoupled from the air inlet and another adsorber is coupled thereto. The method for controlling cycle times for each adsorber also will take into consideration: variations in load demand, purge to feed ratio and upsets which occur on switching of adsorber beds

Purification of air

在低温蒸馏前降低进料空气流中水、二氧化碳和氧化亚氮的含量的方法，其包括：a)使所述进料空气流在进料温度和进料压力下以进料方向通过第一吸附剂，并随后通过第二吸附剂，所述第一吸附剂在30℃下测量的CO 2 相对于N 2 O的亨利定律选择性为至少12.5，所述第二吸附剂在30℃下测量的CO 2 吸附的亨利定律常数小于1020mmol/g/大气压，且其在30℃下测量的CO 2 相对于N 2 O的亨利定律选择性最多为5；b)在第一时间周期后停止将所述进料空气流传送至所述第一和第二吸附剂；c)将与所述第一和第二吸附剂接触的气体减压至低于所述进料压力的第二压力；d)将处于所述第二压力和处于20℃-80℃温度的经加热再生气体以与所述进料方向相反的方向传送到至少所述第二吸附剂，经过第二时间周期，并随后将处于所述第二压力和处于低于所述经加热再生气体的温度的温度的第二再生气体以与所述进料方向相反的方向传送至所述第一和第二吸附剂，经过第三时间周期；e)停止将再生气体传送至所述第一和第二吸附剂；f)将与所述第一和第二吸附剂接触的气体再加压至所述进料压力；和g)重复步骤a)至f)，其中所述第二吸附剂占据所述第一和第二吸附剂总体积的25%至40%体积，且其中所述经加热再生气体的温度比所述进料温度或所述第二再生气体温度之中更高的那个高10℃至60℃；以及包含如上定义的第一吸附剂和第二吸附剂的装置用于降低进料空气流中水、二氧化碳和氮的含量的用途，其中如上所述使吸附剂再生。

Producing cleaned air involves passing cooled air through second container of cyclically operated cleaning device from above to below

The method involves cooling air (3) in a cooler (4), extracting cooled air (5) from the cooler, feeding it into a cyclically operated cleaning device (6) with at least a first and second container (6a,6b) that can be switched over and extracting cleaned air (7) from the cleaning device. Regeneration gas is passed through the first container in a regeneration phase while cleaned air is taken from the second container. The cooled air is passed through the second container from above to below. Independent claims are also included for the following: (A) an arrangement for producing cleaned air (B) a method of low temperature air decomposition (C) and an arrangement for low-temperature air decomposition .

Air separation method with integrated gas turbine

An air separation method employing compression powered by a gas turbine and employing four heat regenerable adsorbent purifiers wherein two purifiers are used to purify feed air while a third purifier is being regenerated by hot regeneration gas and a fourth purifier is being cooled so as to be ready to purify feed air.

CRYOGENIC AIR SEPARATION PROCESS AND DEVICE FOR ITS IMPLEMENTATION

How to integrate high pressure combustion turbines and air separation systems

본 발명은 이중 칼럼 극저온 공기 분리 사스템을 이용하여, 연소 터빈 압축기로부터의 압축 공기의일부분을 냉각하여 정제하고, 그 결과 생성된 냉각 공기의 제1부분을 일 팽창시키고, 그 팽창 공기를 저압 칼럼으로 유입함으로써 통합되는 고압 연소 터빈에 관한 것이다. 그 결과로서 생성된 냉각 공기는 재냉각되고, 유량 억제되어 고압 칼럼으로 유입된다. 질소 생성물 흐름은 터빈 연소기로 복귀되고, 이 질소 생성물 흐름의 일부분은 선택적으로 냉각되고, 유량 억제되어, 고압 칼럼으로 재순환된다. 바람직하게는 ,고압 칼럼이 연소 터빈 공기 압축기로부터의 압축 공기의 절대 압력이 약 20% 내지 약 85%의 범위에 있는 절대 압력에서 작동한다. 선택적으로, 고농도 산소 액체 또는 고농도 질소 액체는 질소 생성물의 수용가 적은 기간 중에는 고압 칼럼으로 부터 배출되어 저장되고, 질소 생성물의 수용가 많은 기간 중에는 저압 칼럼으로 추가 공급하기 위해 저장소로 부터 배출된다. 이와는 다르게, 고순도 액체 산소가 산소 생성물의 수요가 적은 기간 중에는 저압 칼럼으로 부터 배출되어 저장되고, 산소 생성물의 수요가 많은 기간 중에는 저장소로부터 배출되어 , 고압 칼럼으로부터 배출된 산소 생성물을 보충한다.

Method of restarting feed air purifier