CN115025751A - System and method for preparing adsorption material from carbon dioxide absorbent waste liquid and coal ash - Google Patents
System and method for preparing adsorption material from carbon dioxide absorbent waste liquid and coal ash Download PDFInfo
- Publication number
- CN115025751A CN115025751A CN202210725739.3A CN202210725739A CN115025751A CN 115025751 A CN115025751 A CN 115025751A CN 202210725739 A CN202210725739 A CN 202210725739A CN 115025751 A CN115025751 A CN 115025751A
- Authority
- CN
- China
- Prior art keywords
- fluidized bed
- raw material
- fly ash
- bed
- waste liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 98
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000007788 liquid Substances 0.000 title claims abstract description 71
- 239000002699 waste material Substances 0.000 title claims abstract description 70
- 239000002250 absorbent Substances 0.000 title claims abstract description 67
- 230000002745 absorbent Effects 0.000 title claims abstract description 67
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 45
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 45
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000010883 coal ash Substances 0.000 title description 2
- 239000010881 fly ash Substances 0.000 claims abstract description 82
- 239000002994 raw material Substances 0.000 claims abstract description 78
- 238000012216 screening Methods 0.000 claims abstract description 39
- 238000007664 blowing Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- 238000003860 storage Methods 0.000 claims description 25
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 18
- 239000003463 adsorbent Substances 0.000 claims description 17
- 230000005587 bubbling Effects 0.000 claims description 13
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 150000001408 amides Chemical class 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 claims description 4
- 238000011069 regeneration method Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 description 12
- 238000007873 sieving Methods 0.000 description 11
- 238000005243 fluidization Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28004—Sorbent size or size distribution, e.g. particle size
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention relates to the technical field of absorbent waste liquid resource utilization and adsorption material preparation, and discloses a system and a method for preparing an adsorption material from carbon dioxide absorbent waste liquid and fly ash. The system comprises a raw material screening bed, an adsorption material preparation device and a conveying device, wherein a primary screen and a secondary screen are sequentially arranged inside the raw material screening bed from top to bottom; the adsorption material preparation device comprises a fluidized bed, a metering device, an air blowing device and a heating device, wherein a plurality of nozzles are arranged in the fluidized bed, absorbent waste liquid of the metering device is sprayed into the fluidized bed through the plurality of nozzles, an air inlet is formed in the bottom of the fluidized bed, and the air blowing device is used for blowing hot air heated by the heating device into the fluidized bed through the air inlet; the conveying device is positioned between the raw material screening bed and the fluidized bed and used for conveying the raw materials on the secondary screen into the fluidized bed. The system and the method realize resource utilization of the carbon dioxide absorbent waste liquid and the fly ash.
Description
Technical Field
The invention relates to the technical field of absorbent waste liquid resource utilization and adsorption material preparation, in particular to a system and a method for preparing an adsorption material from carbon dioxide absorbent waste liquid and fly ash.
Background
The invention provides an integrated device and method for preparing an adsorption material from fly ash and carbon dioxide absorbent waste liquid, wherein the integrated device and method are used for preparing the adsorption material from the fly ash and the carbon dioxide absorbent waste liquid.
Disclosure of Invention
The invention aims to solve the problem that the carbon dioxide absorbent waste liquid is not effectively utilized in the prior art, and provides a system and a method for preparing an adsorption material from the carbon dioxide absorbent waste liquid and fly ash.
In order to achieve the above object, in one aspect, the present invention provides a system for preparing an adsorbent material from a carbon dioxide absorbent waste liquid and fly ash, the system comprising a raw material screening bed, an adsorbent material preparation device and a conveying device,
the top of the raw material screening bed is provided with a raw material inlet, and a primary screen and a secondary screen are sequentially arranged inside the raw material screening bed from top to bottom and used for screening the raw material fed through the raw material inlet;
the adsorption material preparation device comprises a fluidized bed, a metering device, an air blowing device and a heating device, wherein a plurality of nozzles are arranged in the fluidized bed, the heights of the nozzles are lower than that of the conveying device, absorbent waste liquid of the metering device is sprayed into the fluidized bed through the nozzles, an air inlet is formed in the bottom of the fluidized bed, and the air blowing device is used for blowing hot air heated by the heating device into the fluidized bed through the air inlet;
the conveying device is positioned between the raw material screening bed and the fluidized bed and used for conveying the fly ash raw material on the secondary screen into the fluidized bed.
Preferably, a collecting device is arranged below the secondary screen, and the bottom of the collecting device is of a non-porous structure and is used for collecting the fly ash raw material below the secondary screen.
Preferably, the system further comprises a storage tank and a downcomer which are connected with each other, the downcomer and the raw material screening bed are connected through a conduit, and the conduit is used for guiding the raw material on the primary screen and/or the fly ash raw material below the secondary screen into the downcomer.
Preferably, the primary screen, the secondary screen and the collecting device are arranged obliquely.
Preferably, the inclination angle a of the primary sieve, the inclination angle b of the secondary sieve and the inclination angle c of the collecting device are 15-75 degrees.
Further preferably, the inclination angle a of the primary sieve, the inclination angle b of the secondary sieve and the inclination angle c of the collecting device are 30-60 degrees.
Preferably, the conveying device is a belt-shaped, plate-shaped or tubular structure device, and baffle structures are arranged on two sides of the belt-shaped or plate-shaped structure device.
Preferably, openings are formed in two ends of the conveying device, one end of the conveying device is communicated with the raw material screening bed, the other end of the conveying device is communicated with the fluidized bed, and the height of one end, communicated with the raw material screening bed, of the conveying device is higher than that of one end, communicated with the fluidized bed, of the conveying device.
Preferably, the metering device comprises an absorbent waste liquid supply device, a metering pump and an equilizer which are connected in sequence through pipelines, and the equilizer is used for equally distributing the absorbent waste liquid from the metering pump to a plurality of nozzles.
Preferably, the system further comprises an adsorbing material storage device, and the top of the fluidized bed is provided with an adsorbing material outlet which is connected with the adsorbing material storage device through a pipeline.
Preferably, the heat source of the heating device is condensed water from a reboiler of a regeneration tower of a carbon dioxide capture system after combustion by a chemical absorption method, and the temperature of the condensed water is 110-120 ℃.
In a second aspect of the invention, there is provided a method for preparing an adsorbent material from carbon dioxide absorbent waste liquid and fly ash, the method being implemented by the system as described above,
the method comprises the following steps:
1) sequentially sieving the fly ash fed into the raw material sieving bed by the primary sieve and the secondary sieve, and then conveying the fly ash left on the secondary sieve into the fluidized bed by the conveying device;
2) and spraying the carbon dioxide absorbent waste liquid into the fluidized bed through a plurality of nozzles, blowing hot air into the fluidized bed, controlling the introduction amount of the hot air to enable the fluidized bed to be in a bubbling fluidized bed state, and contacting the fly ash in the fluidized bed with the carbon dioxide absorbent waste liquid to obtain the adsorbing material.
Preferably, the carbon dioxide absorbent waste liquid contains ammonia gas, amide, imidazole and piperazine.
Preferably, the mesh number of the first-stage sieve and the mesh number of the second-stage sieve are respectively 20-30 meshes and 80-100 meshes.
Preferably, in the step 2), when the fluidized bed is in a bubbling fluidized bed state, the introduction amount of the hot air is controlled so that the fluidizing speed of the fly ash is 2-3 times of the critical fluidizing air speed of the fly ash.
Preferably, the method further comprises: and after the adsorption material is prepared, increasing the introduction amount of hot air to switch the fluidized bed into a pneumatic conveying bed state, and conveying the adsorption material to a storage chamber through the adsorption material outlet.
Preferably, when the fluidized bed is in a pneumatic conveying bed state, the introduction amount of hot air is controlled so that the fluidizing speed of the fly ash is 6-10 times of the critical fluidizing air speed of the fly ash.
In a third aspect of the invention there is provided an adsorbent material prepared by the method hereinbefore described, the adsorbent material being a porous adsorbent material.
The beneficial effects of the invention are mainly reflected in the following aspects:
(1) a method for recycling carbon dioxide absorbent waste liquid and fly ash is provided;
(2) an integrated process for preparing an adsorption material from carbon dioxide absorbent waste liquid and fly ash is provided;
(3) coupling integration of the adsorption material preparation process and the carbon dioxide capture system after combustion by the chemical absorption method is realized, and energy consumption and cost of the preparation system are reduced;
(4) prepared adsorbing material is heavy metal ion Cr 6+ Has excellent adsorption performance.
Drawings
Fig. 1 is a schematic view of a system for preparing an adsorbing material from carbon dioxide absorbent waste liquid and fly ash according to the present invention.
Description of the reference numerals
1, screening a raw material bed; 2, an adsorption material preparation device; 3, a conveying device; 4 a storage tank; 5 a down pipe; 6, an adsorbing material storage device; 11 a raw material inlet; 12, primary screening; 13, secondary screening; 14 a collecting device; 21 a fluidized bed; 22 a metering device; 23 a blower device; 24 a heating device; 211 a nozzle; 212 air inlet; 213 an outlet for adsorbent material; 221 absorbent waste liquid supply means; 222 a metering pump; 223 equispaced.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and these ranges or values should be understood to encompass values close to these ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The system for preparing the adsorbing material from the carbon dioxide absorbent waste liquid and the fly ash, which is provided by the invention, is shown in figure 1, and comprises a raw material screening bed 1, an adsorbing material preparation device 2 and a conveying device 3,
a raw material inlet 11 is formed in the top of the raw material screening bed 1, and a primary sieve 12 and a secondary sieve 13 are sequentially arranged in the raw material screening bed 1 from top to bottom and used for screening the fly ash raw material fed through the raw material inlet 11;
the adsorption material preparation device 2 comprises a fluidized bed 21, a metering device 22, an air blowing device 23 and a heating device 24, wherein a plurality of nozzles 211 are arranged inside the fluidized bed 21, the height of the plurality of nozzles 211 is lower than that of the conveying device 3, absorbent waste liquid of the metering device 22 is sprayed into the fluidized bed 21 through the plurality of nozzles 211, an air inlet 212 is arranged at the bottom of the fluidized bed 21, and the air blowing device 23 is used for blowing hot air heated by the heating device 24 into the fluidized bed 21 through the air inlet 212;
the conveying device 3 is located between the raw material screening bed 1 and the fluidized bed 21, and is used for conveying the fly ash raw material on the secondary screen 13 into the fluidized bed 21.
In the system, after the fly ash raw material is put into a raw material screening bed 1 from a raw material inlet 11, the fly ash raw material is sequentially screened by a primary screen 12 and a secondary screen 13, the raw material with large particle size is screened by the primary screen 12, the raw material with small particle size is screened by the secondary screen 13, the raw material left on the secondary screen 13 after being screened by the secondary screen 13 is the fly ash with qualified particle size range, namely the screening is used for obtaining the raw material with middle particle size, and then the qualified raw material is conveyed into a fluidized bed 21 through a conveying device 3; will the absorbent waste liquid passes through nozzle 211 upwards spouts with the atomizing state in the fluidized bed 21, even, firm attached to fly ash granule surface or inside of absorbent waste liquid atomizing dropping liquid, fly ash granule and absorbent waste liquid contact high efficiency mix preparation adsorption material, and follow hot-air is blown into to fluidized bed 21 bottom, makes through 23 control blast rate of air-blast device fluidized bed 21 is in the bubbling fluidized bed state, and in bubbling bed dense phase district was placed in to the nozzle, the close contact of waste liquid atomizing dropping and fly ash granule was guaranteed, and hot-air and normal atmospheric temperature air are compared and have been improved the consistency of waste liquid simultaneously for waste liquid atomizing dropping is changeed inside attached to fly ash granule surface and pore, and hot-air has played the drying action to the adsorption material that obtains of preparation simultaneously.
In a specific embodiment, in order to make the absorbent waste liquid in a uniform atomized state, 4 to 12 nozzles 211, preferably 6 to 8 nozzles, may be disposed inside the fluidized bed 21 according to practical circumstances.
In the invention, the raw material screening bed 1 can be in a vibrating screen type, the primary screen 12 and the secondary screen 13 are in screen structures, and the screen can be replaced according to the required particle size range.
In a specific embodiment, a collecting device 14 is disposed below the secondary screen 13, and the bottom of the collecting device 14 is a non-porous structure for collecting the fly ash raw material below the secondary screen 13. In the invention, the small-particle-size raw materials collected by the collecting device 14 can be mixed with the large-particle-size raw materials screened by the primary sieve 12 for collection and storage, or can be separately collected and stored, so that the subsequent application is facilitated.
Further, the system also comprises a storage tank 4 and a downcomer 5 which are connected with each other, the downcomer 5 is connected with the raw material sieving bed 1 through a conduit, and the conduit is used for guiding the raw material on the primary sieve 12 and/or the fly ash raw material below the secondary sieve 13 into the downcomer 5. In this manner, the material left on the primary screen 12 after being screened and the fly ash material below the secondary screen 13 through the secondary screen 13 flow through a conduit and a downcomer under the action of vibration or gravity into a storage tank for mixing and storage, and then are used.
In a particular embodiment, said primary sieve 12, said secondary sieve 13 and said collecting device 14 are arranged obliquely in order to enable the material to be conveyed by means of vibration or gravity to the conveying device 3 or conduit, saving energy. The inclination angles of the primary sieve 12, the secondary sieve 13 and the collecting device 14 can be adjusted according to actual conditions, and the inclination angles of the primary sieve 12, the secondary sieve 13 and the collecting device 14 can be the same or different. In a preferred embodiment, the inclination angle a of the primary screen 12, the inclination angle b of the secondary screen 13 and the inclination angle c of the collecting device 14 are 15-75 °. In a more preferred embodiment, the inclination angle a of the primary screen 12, the inclination angle b of the secondary screen 13 and the inclination angle c of the collecting device 14 are 30-60 °. In the present invention, as shown in fig. 1, the inclination angle is an angle formed by the primary sieve 12, the secondary sieve 13, or the collecting device 14 and a horizontal direction, unless otherwise specified.
In the present invention, the conveying means 3 may be a conventional choice in the art. In a specific embodiment, the conveying device 3 is a belt-shaped, plate-shaped or tubular structure device, and baffle structures are arranged at two sides of the belt-shaped or plate-shaped structure device to prevent the raw material from being lost on the conveying device 3.
In the present invention, the conveyor 3 may be disposed horizontally or obliquely. In a specific embodiment, two ends of the conveying device 3 are provided with openings, one end of the conveying device is communicated with the raw material screening bed 1, the other end of the conveying device is communicated with the fluidized bed 21, and the height of one end of the conveying device 3 communicated with the raw material screening bed 1 is higher than that of one end communicated with the fluidized bed 21.
In a preferred embodiment, the metering device 22 comprises an absorbent waste liquid supply device 221, a metering pump 222 and a distributor 223 which are connected in sequence through pipelines, wherein the distributor 223 is used for equally distributing the absorbent waste liquid from the metering pump 222 to a plurality of nozzles 211. The absorbent waste liquid enters the metering pump 222 and the uniform distributor 223 from the absorbent waste liquid supply device 221 through the pipeline in sequence, the uniform distributor 223 is used for equally distributing the absorbent waste liquid to the plurality of nozzles 211, so that the amount of the waste liquid entering each nozzle is kept consistent, the absorbent waste liquid entering the fluidized bed 21 is ensured to be in a uniform atomization state, and the mixing efficiency of the raw materials and the absorbent waste liquid is improved.
In the present invention, the heating device 24 is used for heating the air entering the bottom of the fluidized bed 21 to enhance the adhesion of the carbon dioxide absorbent waste liquid on the fly ash particles, and the heating device 24 is not limited as long as the air can be heated. In a preferred embodiment, the heating device 24 is a heat exchanger, and a heat source of the heating device 24 is condensed water from a reboiler of a regeneration tower of a carbon dioxide capture system after combustion by a chemical absorption method, so as to reduce the preparation cost of the adsorbent, and further preferably, the temperature of the condensed water is 110 to 120 ℃. Adopt the heat exchanger as heating device, the heat exchanger middle part is the comdenstion water, lets in the cavity that constitutes between casing and the comdenstion water with the air in, can carry out the heat transfer to the air through the comdenstion water, and this kind of heating methods can realize recycling of comdenstion water, has reduced the manufacturing cost of adsorbing material.
In the present invention, the blowing rate can be adjusted by the blowing device 23. In a preferred embodiment, the system further comprises a storage device 6 for adsorbing material, the top of the fluidized bed 21 is provided with an adsorbing material outlet 213, and the adsorbing material outlet 213 is connected with the storage device 6 through a pipeline. After the adsorption material is prepared in the bubbling fluidized bed state, the blowing rate is increased by the blowing device 23, so that the operation state of the fluidized bed 21 is switched from the bubbling fluidized bed to a pneumatic conveying bed, and the adsorption material particles are conveyed to the adsorption material storage device 6 through the adsorption material outlet 213 under high-speed airflow to obtain the adsorption material.
In a second aspect of the invention, there is provided a method for preparing an adsorbent material from carbon dioxide absorbent waste liquid and fly ash, the method being implemented by the system as described above,
the method comprises the following steps:
1) the fly ash put into the raw material screening bed 1 is sequentially screened by the primary sieve 12 and the secondary sieve 13, and then the fly ash left on the secondary sieve 13 is conveyed into the fluidized bed 21 by the conveying device 3;
2) and spraying the carbon dioxide absorbent waste liquid into the fluidized bed 21 through a plurality of nozzles 211, blowing hot air into the fluidized bed 21, controlling the introduction amount of the hot air to enable the fluidized bed 21 to be in a bubbling fluidized bed state, and contacting the fly ash in the fluidized bed 21 with the carbon dioxide absorbent waste liquid to obtain the adsorbing material.
In a preferred embodiment, the carbon dioxide absorbent waste liquid contains ammonia gas, amide, imidazole, piperazine, and the like.
In a specific embodiment, in order to obtain fly ash with a particle size suitable for the carbon dioxide absorbent waste liquid, ensure that fly ash particles are efficiently mixed with the absorbent waste liquid, and ensure that the carbon dioxide absorbent waste liquid is uniformly and firmly attached to the surface or inside of the fly ash particles, the mesh numbers of the primary sieve 12 and the secondary sieve 13 are 20-30 and 80-100 meshes respectively.
In a preferred embodiment, in the step 2), when the fluidized bed 21 is in a bubbling fluidized bed state, the introduction amount of the hot air is controlled so that the fluidizing speed of the fly ash is 2 to 3 times of the critical fluidizing air speed of the fly ash. When the hot air introduction amount is within the range, the mixing rate and the bonding strength of the fly ash particles and the absorbent waste liquid can be improved.
In a specific embodiment, the method further comprises: after the preparation of the adsorbing material is completed, the introduction amount of hot air is increased to switch the fluidized bed 21 to a pneumatic conveying bed state, and the adsorbing material is conveyed to a storage chamber through the adsorbing material outlet 213. In the pneumatic transport bed state, the resulting adsorbent material is carried by the high velocity gas stream from bottom to top into the adsorbent material outlet 213 and transported to storage.
In a preferred embodiment, when the fluidized bed 21 is in a pneumatic conveying bed state, the introduction amount of the hot air is controlled so that the fluidizing speed of the fly ash is 6-10 times of the critical fluidizing air speed of the fly ash. When the introduction amount of the hot air is within the range, the moving speed of the prepared adsorbing material from bottom to top can be improved, and meanwhile, the bonding strength between the fly ash particles and the absorbent waste liquid cannot be influenced.
In a third aspect of the present invention, there is provided an adsorbing material prepared by the method described above, wherein the adsorbing material is a porous adsorbing material, and can be used for adsorbing and removing heavy metals, organic matters and the like in sewage.
The present invention will be described in detail by way of examples, but the scope of the present invention is not limited thereto.
The embodiment of the invention is implemented in the following system for preparing the adsorbing material by using the carbon dioxide absorbent waste liquid and the fly ash:
as shown in fig. 1, the system comprises a raw material sieving bed 1, an adsorbing material preparing device 2 and a conveying device 3,
the raw material screening device comprises a raw material screening bed 1, a raw material inlet 11, a primary screen 12 and a secondary screen 13, wherein the primary screen 12 and the secondary screen 13 are sequentially arranged in the raw material screening bed 1 from top to bottom and used for screening raw materials fed through the raw material inlet 11, a collecting device 14 is arranged below the secondary screen 13, the bottom of the collecting device 14 is of a non-porous structure, the primary screen 12, the secondary screen 13 and the collecting device 14 are obliquely arranged, and the inclination angles a, b and c are 15-75 degrees;
the adsorbing material preparation device 2 comprises a fluidized bed 21, a metering device 22, an air blowing device 23 and a heating device 24, 4-12 nozzles 211 are arranged in the fluidized bed 21, the height of a plurality of nozzles 211 is lower than that of the conveying device 3, the absorbent waste liquid of the metering device 22 is sprayed into the fluidized bed 21 through 4-12 nozzles 211, an air inlet 212 is arranged at the bottom of the fluidized bed 21, the blowing device 23 is used for blowing the hot air heated by the heating device 24 into the fluidized bed 21 through the air inlet 212, the metering device 22 comprises an absorbent waste liquid supply device 221, a metering pump 222 and an even distributor 223 which are connected in sequence through pipelines, the heat source of the heating device 24 is condensed water from a reboiler of a regeneration tower of a carbon dioxide capture system after combustion by a chemical absorption method, and the temperature of the condensed water is 110-120 ℃;
the conveying device 3 is positioned between the raw material screening bed 1 and the fluidized bed 21 and is used for conveying the raw materials on the secondary screen 13 into the fluidized bed 21, the conveying device 3 is in a belt shape, and baffle structures are arranged on two sides of the conveying device;
the system comprises a storage tank 4 and a downcomer 5 which are connected with each other, the downcomer 5 is connected with the raw material screening bed 1 through a conduit, the system comprises an adsorbing material storage device 6, an adsorbing material outlet 213 is arranged at the top of the fluidized bed 21, and the adsorbing material outlet 213 is connected with the adsorbing material storage device 6 through a pipeline.
Example 1
1) Sequentially sieving the fly ash fed into the raw material sieving bed 1 by using the primary sieve 12 and the secondary sieve 13, and then conveying the fly ash left on the secondary sieve 13 into the fluidized bed 21 by using the conveying device 3, wherein the mesh numbers of the primary sieve 12 and the secondary sieve 13 are respectively 20 meshes and 50 meshes;
2) spraying carbon dioxide absorbent waste liquid into the fluidized bed 21 through a plurality of nozzles 211, blowing hot air into the fluidized bed 21, controlling the introduction amount of the hot air to control the fluidization speed of the fly ash to be 2 times of the critical fluidization air speed of the fly ash, enabling the fluidized bed 21 to be in a bubbling fluidized bed state, and enabling the fly ash in the fluidized bed 21 to be in contact with the carbon dioxide absorbent waste liquid to obtain an adsorption material, wherein the carbon dioxide absorbent waste liquid contains ammonia, amide, imidazole and piperazine;
3) after the adsorption material is prepared, the introduction amount of hot air is increased to control the fluidization speed of the fly ash to be 8 times of the critical fluidization air speed, so that the fluidized bed 21 is switched to a pneumatic conveying bed state, and the adsorption material is conveyed to a storage chamber through the adsorption material outlet 213.
Example 2
1) Sequentially sieving the fly ash fed into the raw material sieving bed 1 by using the primary sieve 12 and the secondary sieve 13, and then conveying the fly ash left on the secondary sieve 13 into the fluidized bed 21 by using the conveying device 3, wherein the mesh numbers of the primary sieve 12 and the secondary sieve 13 are respectively 20 meshes and 50 meshes;
2) spraying carbon dioxide absorbent waste liquid into the fluidized bed 21 through a plurality of nozzles 211, blowing hot air into the fluidized bed 21, controlling the introduction amount of the hot air to control the fluidizing speed of the fly ash to be 3 times of the critical fluidizing air speed of the fly ash, so that the fluidized bed 21 is in a bubbling fluidized bed state, and contacting the fly ash in the fluidized bed 21 with the carbon dioxide absorbent waste liquid to obtain an adsorbing material, wherein the carbon dioxide absorbent waste liquid contains ammonia, amide, imidazole and piperazine;
3) after the adsorption material is prepared, the introduction amount of hot air is increased to control the fluidization speed of the fly ash to be 8 times of the critical fluidization air speed, so that the fluidized bed 21 is switched to a pneumatic conveying bed state, and the adsorption material is conveyed to a storage chamber through the adsorption material outlet 213.
Example 3
1) Sequentially sieving the fly ash fed into the raw material sieving bed 1 by the primary sieve 12 and the secondary sieve 13, and then conveying the fly ash left on the secondary sieve 13 into the fluidized bed 21 by the conveying device 3, wherein the mesh numbers of the primary sieve 12 and the secondary sieve 13 are respectively 50 meshes and 100 meshes;
2) spraying carbon dioxide absorbent waste liquid into the fluidized bed 21 through a plurality of nozzles 211, blowing hot air into the fluidized bed 21, controlling the introduction amount of the hot air to control the fluidizing speed of the fly ash to be 3 times of the critical fluidizing air speed of the fly ash, so that the fluidized bed 21 is in a bubbling fluidized bed state, and contacting the fly ash in the fluidized bed 21 with the carbon dioxide absorbent waste liquid to obtain an adsorbing material, wherein the carbon dioxide absorbent waste liquid contains ammonia, amide, imidazole and piperazine;
3) after the adsorption material is prepared, the introduction amount of hot air is increased to control the fluidization speed of the fly ash to be 8 times of the critical fluidization air speed, so that the fluidized bed 21 is switched to a pneumatic conveying bed state, and the adsorption material is conveyed to a storage chamber through the adsorption material outlet 213.
Comparative example 1
The process is carried out as in example 3, except that only step 1) is carried out, resulting in a fly ash after sieving.
Test example
The adsorption performance of the adsorption material prepared in the example and the adsorption performance of the fly ash obtained in the comparative example were tested, and the adsorption effect data are shown in table 1. The test process is as follows: the adsorbing material prepared in the example and the fly ash obtained in the comparative example were first placed in an oven and dried at 110 ℃ for 4 hours in an air atmosphere, and then cooled in a drying dish for use. 4 200mL beakers were prepared, and 50mg/L of Cr containing heavy metal was added to each beaker 6+ 100mL of the solution, adding one of the adsorbing materials in the examples and the comparative examples into each beaker, adjusting the pH value of the solution to 8, continuously stirring the solution at room temperature for 80min, and then measuring heavy metal ions Cr in the solution 6+ By the concentration of Cr 6+ Calculating Cr from the concentration difference of 6+ The removal rate of (3).
TABLE 1 treatment of adsorbent containing Cr 6+ Evaluation of wastewater Properties
| Example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Removal rate/%) | 94.7 | 95.3 | 97.1 | 67.8 |
As can be seen from Table 1, the adsorbing material prepared by the method of the invention is used for adsorbing heavy metal ions Cr 6+ The adsorption performance of the adsorbent is obviously improved.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (14)
1. A system for preparing an adsorption material from carbon dioxide absorbent waste liquid and fly ash is characterized by comprising a raw material screening bed (1), an adsorption material preparation device (2) and a conveying device (3),
a raw material inlet (11) is formed in the top of the raw material screening bed (1), a primary screen (12) and a secondary screen (13) are sequentially arranged in the raw material screening bed (1) from top to bottom and are used for screening the fly ash raw material fed through the raw material inlet (11);
the adsorption material preparation device (2) comprises a fluidized bed (21), a metering device (22), an air blowing device (23) and a heating device (24), wherein a plurality of nozzles (211) are arranged inside the fluidized bed (21), the heights of the nozzles (211) are lower than that of the conveying device (3), absorbent waste liquid of the metering device (22) is sprayed into the fluidized bed (21) through the nozzles (211), an air inlet (212) is formed in the bottom of the fluidized bed (21), and the air blowing device (23) is used for blowing hot air heated by the heating device (24) into the fluidized bed (21) through the air inlet (212);
the conveying device (3) is positioned between the raw material screening bed (1) and the fluidized bed (21) and is used for conveying the fly ash raw material on the secondary screen (13) into the fluidized bed (21).
2. The system according to claim 1, characterized in that a collecting device (14) is arranged below the secondary screen (13), and the bottom of the collecting device (14) is of a non-porous structure and is used for collecting the fly ash raw material below the secondary screen (13).
3. The system according to claim 2, further comprising a storage tank (4) and a downcomer (5) connected to each other, the downcomer (5) and the raw material sieve bed (1) being connected by a conduit for introducing raw material on the primary sieve (12) and/or fly ash raw material below the secondary sieve (13) into the downcomer (5).
4. A system according to claim 3, characterized in that said primary sieve (12), said secondary sieve (13) and said collecting device (14) are arranged inclined;
preferably, the inclination angle a of the primary screen (12), the inclination angle b of the secondary screen (13) and the inclination angle c of the collecting device (14) are 15-75 degrees;
further preferably, the inclination angle a of the primary screen (12), the inclination angle b of the secondary screen (13) and the inclination angle c of the collecting device (14) are 30-60 °.
5. The system according to claim 1, characterized in that the conveying device (3) is a belt-like, plate-like or tubular structure device, which is provided with baffle structures on both sides;
preferably, openings are arranged at two ends of the conveying device (3), one end of the conveying device is communicated with the raw material screening bed (1), the other end of the conveying device is communicated with the fluidized bed (21), and the height of one end, communicated with the raw material screening bed (1), of the conveying device (3) is higher than that of one end, communicated with the fluidized bed (21).
6. The system according to claim 1, characterized in that said metering device (22) comprises an absorbent waste liquid supply device (221), a metering pump (222) and a distributor (223) connected in sequence by pipes, said distributor (223) being adapted to equally distribute the absorbent waste liquid from the metering pump (222) to a plurality of said nozzles (211).
7. A system according to claim 1, characterized in that the system further comprises a storage means (6) for adsorbent material, that the fluidized bed (21) is provided at its top with an outlet (213) for adsorbent material, and that the outlet (213) for adsorbent material is connected to the storage means (6) for adsorbent material by means of a pipe.
8. The system according to claim 1, wherein the heating source of the heating device (24) is derived from the reboiler condensate water of the regeneration tower of the carbon dioxide capture system after combustion by the chemical absorption method, and the temperature of the condensate water is 110-120 ℃.
9. A method for preparing an adsorbing material by using carbon dioxide absorbent waste liquid and fly ash, which is characterized in that the method is implemented by the system of any one of claims 1-8,
the method comprises the following steps:
1) the fly ash put into the raw material screening bed (1) is sequentially screened by the primary screen (12) and the secondary screen (13), and then the fly ash left on the secondary screen (13) is conveyed into the fluidized bed (21) by the conveying device (3);
2) and (2) spraying the carbon dioxide absorbent waste liquid into the fluidized bed (21) through a plurality of nozzles (211), blowing hot air into the fluidized bed (21), controlling the introduction amount of the hot air to enable the fluidized bed (21) to be in a bubbling fluidized bed state, and contacting the fly ash in the fluidized bed (21) with the carbon dioxide absorbent waste liquid to obtain the adsorbing material.
10. The method of claim 9, wherein the carbon dioxide absorbent spent liquor comprises ammonia, amide, imidazole, and piperazine.
11. The method according to claim 9 or 10, characterized in that the screen mesh numbers of the primary screen (12) and the secondary screen (13) are 20-30 and 80-100 mesh, respectively;
preferably, in the step 2), when the fluidized bed (21) is in a bubbling fluidized bed state, the introduction amount of the hot air is controlled so that the fluidizing speed of the fly ash is 2-3 times of the critical fluidizing air speed of the fly ash.
12. The method of claim 9, further comprising: after the adsorbing material is prepared, the introduction amount of hot air is increased to switch the fluidized bed (21) into a pneumatic conveying bed state, and the adsorbing material is conveyed to a storage chamber through the adsorbing material outlet (213).
13. The method as claimed in claim 12, wherein the fluidized bed (21) is in a pneumatic conveying bed state, and the amount of the hot air introduced is controlled so that the fluidizing velocity of the fly ash is 6 to 10 times of the critical fluidizing velocity thereof.
14. The adsorbing material prepared by the method of claims 9-13, wherein the adsorbing material is a porous adsorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210725739.3A CN115025751B (en) | 2022-06-23 | 2022-06-23 | System and method for preparing adsorption material from carbon dioxide absorbent waste liquid and fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210725739.3A CN115025751B (en) | 2022-06-23 | 2022-06-23 | System and method for preparing adsorption material from carbon dioxide absorbent waste liquid and fly ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115025751A true CN115025751A (en) | 2022-09-09 |
| CN115025751B CN115025751B (en) | 2023-10-27 |
Family
ID=83126113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210725739.3A Active CN115025751B (en) | 2022-06-23 | 2022-06-23 | System and method for preparing adsorption material from carbon dioxide absorbent waste liquid and fly ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115025751B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1044706A (en) * | 1973-11-16 | 1978-12-19 | Leonard J. Minnick | Structural materials based on lime-fly ash-sulfite compositions |
| KR19980054408A (en) * | 1996-12-27 | 1998-09-25 | 우덕창 | Coal Ash Purification System Using Heat Treatment |
| US20040123786A1 (en) * | 1999-11-02 | 2004-07-01 | Crafton Paul M. | Method and apparatus for combustion of residual carbon in fly ash |
| CN102274703A (en) * | 2011-05-31 | 2011-12-14 | 山东奥诺能源科技有限公司 | Large-scale continuous energy-saving fluidized bed spraying, granulating and drying process |
| CN102784589A (en) * | 2012-09-03 | 2012-11-21 | 青岛科技大学 | Nonmetal particle fluidized bed coating device and method for waste circuit board |
| CN205528602U (en) * | 2016-04-14 | 2016-08-31 | 无锡亿恩科技股份有限公司 | Built -in hot fluidized bed coal humidifying device of clean high -efficient step screening |
| CN210022801U (en) * | 2019-04-12 | 2020-02-07 | 山东立鑫建材有限公司 | Fly ash multi-stage screening device |
| JP6722839B1 (en) * | 2019-03-18 | 2020-07-15 | 株式会社トクヤマ | Method of modifying fly ash |
| CN211515118U (en) * | 2019-10-30 | 2020-09-18 | 四川宝船建筑科技有限责任公司 | Screening post-treatment device after sintering of fly ash ceramsite |
| CN113713778A (en) * | 2021-10-17 | 2021-11-30 | 盐城师范学院 | For CO2Preparation method of captured alcohol amine modified fly ash adsorbent |
| CN215743666U (en) * | 2021-04-25 | 2022-02-08 | 江西金辉锂业有限公司 | Fly ash production that can pulverize for two times uses multi-stage screening plant |
| CN114133072A (en) * | 2021-12-16 | 2022-03-04 | 中国华能集团清洁能源技术研究院有限公司 | System and method for treating waste liquid containing carbon dioxide trapping absorbent |
| CN114130553A (en) * | 2021-10-27 | 2022-03-04 | 中国石油化工集团有限公司 | Fly ash preparation system and preparation process |
| CN114456852A (en) * | 2021-12-23 | 2022-05-10 | 中煤地第二勘探局集团有限责任公司 | Waste liquid treatment method for blast furnace gas carbon capture |
-
2022
- 2022-06-23 CN CN202210725739.3A patent/CN115025751B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1044706A (en) * | 1973-11-16 | 1978-12-19 | Leonard J. Minnick | Structural materials based on lime-fly ash-sulfite compositions |
| KR19980054408A (en) * | 1996-12-27 | 1998-09-25 | 우덕창 | Coal Ash Purification System Using Heat Treatment |
| US20040123786A1 (en) * | 1999-11-02 | 2004-07-01 | Crafton Paul M. | Method and apparatus for combustion of residual carbon in fly ash |
| CN102274703A (en) * | 2011-05-31 | 2011-12-14 | 山东奥诺能源科技有限公司 | Large-scale continuous energy-saving fluidized bed spraying, granulating and drying process |
| CN102784589A (en) * | 2012-09-03 | 2012-11-21 | 青岛科技大学 | Nonmetal particle fluidized bed coating device and method for waste circuit board |
| CN205528602U (en) * | 2016-04-14 | 2016-08-31 | 无锡亿恩科技股份有限公司 | Built -in hot fluidized bed coal humidifying device of clean high -efficient step screening |
| JP6722839B1 (en) * | 2019-03-18 | 2020-07-15 | 株式会社トクヤマ | Method of modifying fly ash |
| CN210022801U (en) * | 2019-04-12 | 2020-02-07 | 山东立鑫建材有限公司 | Fly ash multi-stage screening device |
| CN211515118U (en) * | 2019-10-30 | 2020-09-18 | 四川宝船建筑科技有限责任公司 | Screening post-treatment device after sintering of fly ash ceramsite |
| CN215743666U (en) * | 2021-04-25 | 2022-02-08 | 江西金辉锂业有限公司 | Fly ash production that can pulverize for two times uses multi-stage screening plant |
| CN113713778A (en) * | 2021-10-17 | 2021-11-30 | 盐城师范学院 | For CO2Preparation method of captured alcohol amine modified fly ash adsorbent |
| CN114130553A (en) * | 2021-10-27 | 2022-03-04 | 中国石油化工集团有限公司 | Fly ash preparation system and preparation process |
| CN114133072A (en) * | 2021-12-16 | 2022-03-04 | 中国华能集团清洁能源技术研究院有限公司 | System and method for treating waste liquid containing carbon dioxide trapping absorbent |
| CN114456852A (en) * | 2021-12-23 | 2022-05-10 | 中煤地第二勘探局集团有限责任公司 | Waste liquid treatment method for blast furnace gas carbon capture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115025751B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017045602A1 (en) | Coke oven flue gas desulfurization and denitrification combined purification process and apparatus | |
| CN103816780B (en) | A kind of low-temperature flue gas desulphurization denitration is except ammonia integral process | |
| CN101160500B (en) | Method and device for treating waste gas from sinter installations | |
| CN105413326B (en) | A kind of activated coke flue gas purification system | |
| CN101157004B (en) | Spray drying and multilevel cooling integration technics of wet-type ammonia desulfuration offspring | |
| CN105233673B (en) | A kind of carbon base catalyst system for desulfuration and denitration and method | |
| CN105668832A (en) | Desulfurization wastewater treatment system and method | |
| CN103405982B (en) | Smoke purification device | |
| CN209138324U (en) | A kind of high effective flue gas fair current dust-removal and desulfurizing disappears white device | |
| CN109289475A (en) | A kind of high effective flue gas fair current dust-removal and desulfurizing disappears white processing method and its device | |
| CN109179545B (en) | Device system for treating desulfurization wastewater by using flue gas waste heat of power plant | |
| CN102019275A (en) | Airflow classifying and airflow drying process for coking coal | |
| CN108916900B (en) | A kind of fine grain system and method for steam phase transformation coupling low temperature electric precipitation removing | |
| CN115025751A (en) | System and method for preparing adsorption material from carbon dioxide absorbent waste liquid and coal ash | |
| CN201565289U (en) | Large-sized spraying and granulating fluidized bed dryer | |
| CN111991991A (en) | Active coke turbulent bed desulfurization tower, system and method | |
| CN108939705A (en) | The purification method and device of smog in a kind of air-flow | |
| CN107297106A (en) | Fine powder coalescence prilling and equipment in spray drying | |
| CN209386821U (en) | A kind of production system of pelletizing flue gas ultra-low NOx emission | |
| CN104941391B (en) | A kind of flue gas removes the device of hydrogen chloride gas | |
| CN111001353A (en) | Vacuum spray fluidization granulator | |
| CN108043202A (en) | For the absorption tower of fume treatment and using its smoke processing system and method | |
| CN104258784B (en) | A kind of Swine blood protein separator | |
| CN212283918U (en) | High concentration mother liquor prilling granulator | |
| CN207042427U (en) | A kind of net gas for ceramic industry is granulated and smoke processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |