Activated carbon non-woven filter cloth for coal-fired flue gas mercury removal and preparation method thereof

The invention relates to activated carbon non-woven filter cloth for coal-fired flue gas mercury removal and a preparation method thereof, wherein the activated carbon non-woven filter cloth comprises a non-woven cloth layer and a filter material layer; and the preparation method comprises the following steps: making polytetrafluoroethylene fiber into non-woven material by systems of fiber feeding, fiber opening, fiber mixing, fiber fine-opening, cotton feeding, cotton levelling, cotton rough-combing, cotton fine-combing, cotton web folding, spunlacing, and the like, and taking the non-woven material as basal cloth; covering the non-woven cloth layer with the filter layer material on the basal layer by adopting viscose-based activated carbon fiber by an opening and picking system, a combing and web forming system, an activated carbon powder scattering system, a mixed web-forming system and a glue spraying system, and then a heating and shaping system to finally obtain the finished product ...

High-voltage electric field drying apparatus and method for spun-laced nonwoven manufacturing technique

The invention relates to a high voltage electric filed drying device and a method used for the production process of spun-laced nonwovens. A drying winding system of the invention consists of high voltage electric filed drying equipment and a winding head. The high voltage electric filed drying equipment adopts the high voltage electric filed drying equipment with prickles. A high voltage positive plate of the drying equipment is provided with a certain amount of equally spaced prickles; a high voltage negative plate of the drying equipment is a semi-circular metal plate; both the high voltage positive plate and the high voltage negative plate are respectively provided with ventilating keyholes. After the high voltage electric filed is imposed in an electrode system which consists of needle-typed prickle plates, the spun-laced nonwovens pass through the high voltage electric filed; and the bottom of the high voltage negative plate is provided with a hot-air channel which is used for eliminating ...

High-strength dry CO2 adsorbent for regeneration by using zeolite as carrier and preparation thereof

The invention relates to a high-strength dry CO2 adsorbent for regeneration by using zeolite as a carrier and a preparation method thereof. The adsorbent consists of two parts, namely an active ingredient and a carrier, wherein the active ingredient is hexagonal system potassium carbonate and accounts for 30 to 50 weight percent of the total weight of the adsorbent; and the carrier is the zeolite and accounts for 50 to 70 weight percent of the total weight of the adsorbent. The adsorbent is granular, has the mean particle size of 100 to 200 mu m and the particle size distribution range of 50 to 300 mu m, and is prepared by an excessive impregnating method. The adsorbent has the advantages of large specific surface area, high porosity, high strength, abrasion resistance, and particularly obvious desorption on carbon dioxide; and the preparation method has the advantages of simple and practical preparation method, low cost and suitability for industrial production.

Method and device for removing CO2 in fire coal fume based on CO2 circulating carried gas

The invention relates to a method and a device for removing CO2 in fire coal fume based on CO2 circulating carried gas, being characterized in that: when fume is purified, partial CO2 gas stored in a gas storage tank is taken as the fluidization gas of a first fluidized bed reactor, then a potassium radical absorber is used for removing the CO2 in fire coal fume and the CO2 as the fluidization gas of the first fluidized bed reactor out to be stored in the gas storage tank for recycling; the potassium radical absorber is used for removing the CO2 in the first fluidized bed reactor, and the potassium radical absorber can be regenerated and recycled. The removing method of the invention is simple in process, can realize near zero emission of CO2, thus greatly reducing the running cost of the system and having obvious environment benefit.

High strength dried regenerative CO2 adsorbent taking coal gangue as carrier and preparation thereof

The invention discloses a high strength dried regenerative CO2 adsorbent taking a coal gangue as a carrier and preparation thereof, wherein the high strength dried regenerative CO2 adsorbent taking the coal gangue as the carrier comprises the components of an adsorbent, a carrier and a binder with the weight ratio of 2-6:4-8:1-2; and the preparation method comprises the following steps: (1) grinding and screening the coal gangues to be used as a carrier base material, grinding the dried clay to be used as a carrier auxiliary material, and mixing and grinding the base material with the auxiliary material; (2) adding the grinded micro powder particles, the adsorbent and the binder into water and adding antifoaming agent and dispensing agent at the same time to obtain slurry; and (3) preparing the slurry into spherulites with diameter of 50-100 mu m and carrying out calcination on the dried spherulites. The absorbent of the invention has the advantages of large specific surface area, good ...

Integrated control method capable of simultaneously removing inhalable particles and heavy metal from fire coal

The invention relates to an integrated control method for simultaneously removing respirable particle substances and heavy metal in fire coal. The integrated control method is characterized in that fly ash residual carbon having good adsorption effect on the heavy metal is sprayed in the front end of a bag type filter to remove heavy metal mercury in fire coal flue gas; meanwhile, ferrum series oxides with catalysis are sprayed in lime and the fly ash to remove sulfur oxide, and the like in the fire coal flue gas in a fluid bed reactor; filter materials of the bag filter are made of carbon-doped fibers and can effectively remove the heavy metal mercury in the fire coal flue gas for the second time, thereby achieving the aim for simultaneously removing the respirable particle substances and the heavy metal in the fire coal flue gas. The method can remove PM2.5 level, particularly finer micrometer and nanometer respirable particle substances with the removal rate up to more than 98 percent ...

Method for removing heavy metal mercury in coal-fired flue gas with ACF-Co

The invention relates to a method for removing heavy metal mercury in coal-fired flue gas with ACF-Co, which comprises: (1) selecting an activated carbon fiber felt with the specific area of 1200 square meter/g to 1800 square meter /g, dipping the felt in Co(NO3)2 solution, and then shaking and drying; (2) sintering the dried activated carbon fiber felt carrying Co(NO3)2 under the protection of N2 atmosphere, then cooling to 100 DEG C under the protection of N2 atmosphere, and preparing into a Co-carried activated carbon fiber felt shown by ACF-Co; (3) on a fixed bed experimental system, adopting the prepared ACF-Co to be laid on the bed, leading the mercury-containing coal-fired flue gas to flow through the felt body from the top down, and completing the removing process of Hg0 in the coal-fired flue gas. The method has low cost, simple process, and easy practical operation, greatly improves the removal efficiency of the heavy metal mercury in coal-fired flue gas, and has good application ...

Carbon-doped fiber filter cloth for removing mercury in coal-fired flue gas and preparation method thereof

High-strength dry type CO2 adsorbent for regeneration using river sediment as carrier and preparation method thereof

The invention relates to a high-strength dry type CO2 adsorbent for regeneration using river sediment as a carrier. The CO2 adsorbent comprises an absorbent, a carrier and an adhesive in the weight ratio of 2-6: 4-8: 1-2, wherein the absorbent is sodium carbonate or potassium carbonate; the carrier comprises carrier base material and carrier auxiliary material in the weight ratio of 4:1; the carrier base material is the river sediment; the carrier auxiliary material is clay and dewatering sludge of living sewage treating plants; and the adhesive is sodium silicate. The preparing method comprises the following steps of: mixing and batching the sediment which is used as raw material, dewatering, grinding, drying and forming, and sintering into finished products. The invention has the advantages of large specific surface, good porosity, high strength, abrasion resistance, and obvious adsorption and removal functions especially on carbon dioxide. The preparing method is simple and practical ...

Conduction type pulse blowing deashing method with velocity difference jets

The invention relates to a drainage type pulse jet dust cleaning method with velocity difference jet, which comprises the following steps: an injection pipe b and an injection pipe a connected with a central jet pipe on the central axis of a jetting short pipe are controlled by the same pulse valve, and jet the compressed air at the same time; central jet and peripheral torus small hole jet form the velocity difference jet due to different velocities; the velocity difference jet enters a drainage pipe, and drains the clean air in a clean room in the meanwhile; a certain distance is kept between the lower end of the drainage pipe and the port of a filter bag, herein the velocity difference jet again drains mass clean air in the clean room and jets the clean air into the filter bag through the port of the filter bag; and the velocity difference jet is effectively sprayed at every part of the filter bag after entering the filter bag, and the peripheral torus small hole jet can effectively ...

Dry-type CO2 adsorbent using lake sediment and fly ash together as carrier and preparation thereof

The invention relates to a dry-type CO2 adsorbent using lake sediment and fly ash together as a carrier and a preparation method thereof. The dry-type CO2 adsorbent comprises an adsorbent, a carrier and a bonder with the weight proportion 2-6:4-8:1-2, wherein the absorbent is sodium carbonate or potassium carbonate, the carrier comprises a carrier base material and an auxiliary material with the weight proportion of 4:1. The carrier base material is the lake sediment and fly ash with the weight proportion of 1:1, and the auxiliary material of the carrier is clay. The bonder is sodium silicate. The preparation method comprises the steps of mixing the raw material lake sediment, dehydrating, grinding, drying, forming and sintering to form the finished product. In the invention, the lake sediment is used as the carrier, the problem of carrier material can be solved and a part of lake sediment can be handled, thus recycling the waste. The lake sediment is adhesive, thereby reducing use level ...

Integrated control method capable of simultaneously removing inhalable particles and heavy metal from fire coal

The invention relates to an integrated control method for simultaneously removing respirable particle substances and heavy metal in fire coal. The integrated control method is characterized in that fly ash residual carbon having good adsorption effect on the heavy metal is sprayed in the front end of a bag type filter to remove heavy metal mercury in fire coal flue gas; meanwhile, ferrum series oxides with catalysis are sprayed in lime and the fly ash to remove sulfur oxide, and the like in the fire coal flue gas in a fluid bed reactor; filter materials of the bag filter are made of carbon-doped fibers and can effectively remove the heavy metal mercury in the fire coal flue gas for the second time, thereby achieving the aim for simultaneously removing the respirable particle substances and the heavy metal in the fire coal flue gas. The method can remove PM2.5 level, particularly finer micrometer and nanometer respirable particle substances with the removal rate up to more than 98 percent ...

Activated carbon fiber non-woven filter cloth for removing mercury from coal-fired flue gas and preparation method thereof

The invention relates to an activated carbon fiber non-woven filter cloth for removing mercury from coal-fired flue gas and preparation method thereof. The non-woven filter cloth comprises a filter material layer and non-woven fabric in a weight ratio of 80%-85%:15%-20%. The preparation method comprises the following steps: separately using viscose based activated carbon fiber and short polytetrafluoroethylene fiber to prepare the filter material layer and the non-woven fabric, then performing on-line superposition, performing spunlacing and combination by using 6-10 water sprayers, drying and reeling to obtain the non-woven filter cloth. The non-woven filter cloth of the invention has high temperature resistant, high strength, good air permeability and especially highly significant adsorption and removal function to heavy metal mercury and the preparation method is simple and practical, has low cost and is applicable to industrialized production.

Method and device for removing heavy metal mercy in fire coal flue gas by carbon powder treated by brominating process

The invention relates to a method for removing heavy metal mercury from fire coal fume by bromized carbon powder and a device thereof, belonging to the field of fume purification. When the method is used for purifying fume, the fire coal fume passes through the fume entrance and enters the entrance section of bromized carbon powder to be fully mixed with the bromized carbon powder sprayed from the entrance section, the heavy metal mercury is removed by using the absorption action of the bromized carbon powder, the processed fume enters a bag type filter of a filtration bag made of carbon doped fiber through a connecting tube to remove the inhalable particles and heavy metal mercury from the fire coal fume as well as the bromized carbon powder used as the sorbent in the fume removal. The purified gas processed by the bag type filter is discharged through a purified gas exit on the bag type filter, the material collected in an ash hopper at the lower end of the bag type filter can be used ...

Conduction type pulse blowing deashing method with velocity difference jets

The invention relates to a drainage type pulse jet dust cleaning method with velocity difference jet, which comprises the following steps: an injection pipe b and an injection pipe a connected with a central jet pipe on the central axis of a jetting short pipe are controlled by the same pulse valve, and jet the compressed air at the same time; central jet and peripheral torus small hole jet form the velocity difference jet due to different velocities; the velocity difference jet enters a drainage pipe, and drains the clean air in a clean room in the meanwhile; a certain distance is kept between the lower end of the drainage pipe and the port of a filter bag, herein the velocity difference jet again drains mass clean air in the clean room and jets the clean air into the filter bag through the port of the filter bag; and the velocity difference jet is effectively sprayed at every part of the filter bag after entering the filter bag, and the peripheral torus small hole jet can effectively ...

Apparatus and method for removing inhalation particulate matter of fire coal at front body to implement zero discharge of carbonic anhydride

The invention provides a method for realizing zero emission of carbon dioxide by former body removal of respirable particulate matter from fired coal. The method is characterized in that a bag type dust collector is used for filtering and removing respirable particulate matter from coal-fire flue gas, and comprises the following steps: the flue gas is input into a first fluidized bed reactor, with potassium bicarbonate produced by the reaction between carbon dioxide and potassium carbonate; the flue gas is separated by a first cyclone separator into purified flue gas and potassium bicarbonate, the purified flue gas is sent out, potassium bicarbonate is input into a second fluidized bed reactor to be subjected to reaction which can produce potassium carbonate and carbon dioxide, potassium carbonate is sent back to the first fluidized bed reactor; and carbon dioxide is separated by a second cyclone separator into purified gas and other isolation, the purified gas is sent out, and the other ...

Waste heat recovery device for boiling heat exchange of organic waste gas of setting machine

The waste heat recovery device comprises an upper shell and a lower shell, a condensation chamber is arranged in the upper shell, a sealing head is arranged at one end of the condensation chamber, a first gas inlet and a first gas outlet are formed in the other end of the condensation chamber, and a plurality of condensation pipes are arranged in the condensation chamber; a second air inlet and a second air outlet are formed in the two ends of the lower shell respectively, a boiling chamber, a spraying chamber and an electrostatic chamber which are communicated with one another are sequentially arranged between the second air inlet and the second air outlet, the boiling chamber and the condensation chamber are connected and separated through a partition plate, a plurality of air holes are formed in the partition plate, and a plurality of boiling pipes are arranged in the boiling chamber; the waste heat recovery part is based on the boiling phase change heat exchange principle and adopts ...

Device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method

The invention relates to a device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method. The device comprises a connecting pipe on which a material spraying device is arranged and which is connected with the chemical reactor that is arranged in a bag-type dust collector. The invention uses fly ash, unburned carbon, lime powder and iron ash to absorb sulfoxides and sulfoxides in the burnt coal gas; filter material in the bag-type dust collector is made from carbon-blended fibres and can jointly remove inhalable particle of coal and heavy metal Hg when filtering gas. The invention has removing effect of 98% to inhalable particle of PM 2.5 grade, obviously controls discharge of heavy metal Hg in coal gas, and has advantages of small volume, simple operation, safe and reliable running and obvious environment effect etc.

Magnetic adsorbent for removing Hg0 from flue gas and preparation and application of magnetic adsorbent

The invention relates to a magnetic adsorbent for removing Hg0 from flue gas and preparation and application of the magnetic adsorbent. The magnetic adsorbent is MagFeSi-Cu0. The preparation method includes the first step of putting Fe3O4 nano particles in deionized water, adding Na2SiO3, adding a mixture into ethyl alcohol, adding NH3*H2O for a sol-gel reaction, conducting steam treatment and conducting drying to obtain magnetic particles of a silicon dioxide coating; the second step of introducing copper nano particles into the surface of silicon iron and sintering the magnetic particles of the silicon dioxide coating and the silicon iron to obtain the magnetic adsorbent. The magnetic adsorbent is applied to removing Hg0 from the flue gas. An adsorbent of mercury is the magnetic adsorbent, the coal-fired flue gas passes through a filter material, the mercury in the flue gas is caught by the magnetic adsorbent in the filter material, a dry drum magnetic separator is used for adsorbent ...

Method and device for removing CO2 in fire coal fume based on CO2 circulating carried gas

The invention relates to a method and a device for removing CO2 in fire coal fume based on CO2 circulating carried gas, being characterized in that: when fume is purified, partial CO2 gas stored in a gas storage tank is taken as the fluidization gas of a first fluidized bed reactor, then a potassium radical absorber is used for removing the CO2 in fire coal fume and the CO2 as the fluidization gas of the first fluidized bed reactor out to be stored in the gas storage tank for recycling; the potassium radical absorber is used for removing the CO2 in the first fluidized bed reactor, and the potassium radical absorber can be regenerated and recycled. The removing method of the invention is simple in process, can realize near zero emission of CO2, thus greatly reducing the running cost of the system and having obvious environment benefit.

Metal riveting device

The invention relates to a metal riveting device which is used for riveting a fuse tool bit (3) and a threading cap (5). The device comprises a riveting machine (1), a die column body (2), a fixed boss (6) and a switch (7) used for controlling the riveting machine (1). The fixed boss (6) is positioned below the mold column body (2); the threading cap (5) and the fuse tool bit (3) are sequentially and reversely buckled on the fixed boss (6); the die cylinder (2) is arranged at the bottom end of the riveting machine (1), and riveting of the fuse tool bit (3) and the threading cap (5) is completed through contact between a lower punch and the fuse tool bit (3). A groove (8) is formed in the bottom end of the die column body (2) and used for riveting the threading cap (5) into the fuse tool bit (3). Compared with the prior art, the riveting device has the advantages of being high in riveting quality, high in riveting efficiency, convenient to operate and the like.

Carbon-doped fiber filter cloth for removing mercury in coal-fired flue gas and preparation method thereof

The invention discloses a carbon-doped fiber filter cloth for removing mercury in a coal-fired flue gas and a preparation method thereof. The carbon-doped fiber filter cloth comprises the components of PPS fiber and active carbon powder in a weight ratio of 1 to 1, wherein the active carbon powder is adhered to the surface of the fiber in a fusion mode to form uniform adsorption active sites to heavy metal mercury in the filter cloth. The preparation method is conducted on an opening and cleaning system, a carding system, a needling system, a drying system, a spraying system, a thermoforming system and an active carbon powder spraying system. The carbon-doped fiber filter cloth has high temperature resistance and high strength, and particularly has a comparatively significant effect in adsorbing and removing the heavy metal mercury in the coal-fired flue gas; besides, the preparation method is simple and feasible, has a low cost and is easy for large-scale industrial production.

Activated carbon fiber non-woven filter cloth for removing mercury from coal-fired flue gas and preparation method thereof

The invention relates to an activated carbon fiber non-woven filter cloth for removing mercury from coal-fired flue gas and preparation method thereof. The non-woven filter cloth comprises a filter material layer and non-woven fabric in a weight ratio of 80%-85%:15%-20%. The preparation method comprises the following steps: separately using viscose based activated carbon fiber and short polytetrafluoroethylene fiber to prepare the filter material layer and the non-woven fabric, then performing on-line superposition, performing spunlacing and combination by using 6-10 water sprayers, drying andreeling to obtain the non-woven filter cloth. The non-woven filter cloth of the invention has high temperature resistant, high strength, good air permeability and especially highly significant adsorption and removal function to heavy metal mercury and the preparation method is simple and practical, has low cost and is applicable to industrialized production.

Preparation method of activated carbon non-woven filter cloth for coal-fired flue gas mercury removal

The invention relates to activated carbon non-woven filter cloth for coal-fired flue gas mercury removal and a preparation method thereof, wherein the preparation method comprises the following steps: making polytetrafluoroethylene fiber into non-woven material by systems of fiber feeding, fiber opening, fiber mixing, fiber fine-opening, cotton feeding, cotton levelling, cotton rough-combing, cotton fine-combing, cotton web folding, spunlacing, and the like; taking the non-woven material as basal cloth; carding viscose-based activated carbon fiber to a web-forming system by adopting an an opening and picking system, and putting it on the basal cloth; mixing into a web-forming system, a glue spraying system by adopting an activated carbon powder scattering system; covering the non-woven cloth layer, and then a heating and shaping system to finally obtain the finished product by rolling. The non-woven filter cloth has the advantages of high-temperature resistance, high strength, good air-permeability ...