CN114191933A - Carbon dioxide capture system of lime kiln - Google Patents
Carbon dioxide capture system of lime kiln Download PDFInfo
- Publication number
- CN114191933A CN114191933A CN202111538632.XA CN202111538632A CN114191933A CN 114191933 A CN114191933 A CN 114191933A CN 202111538632 A CN202111538632 A CN 202111538632A CN 114191933 A CN114191933 A CN 114191933A
- Authority
- CN
- China
- Prior art keywords
- adsorbent
- carbon dioxide
- lime kiln
- waste gas
- pipe
- 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.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 53
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 51
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 50
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 50
- 239000004571 lime Substances 0.000 title claims abstract description 50
- 239000003463 adsorbent Substances 0.000 claims abstract description 94
- 239000000428 dust Substances 0.000 claims abstract description 49
- 239000002912 waste gas Substances 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000011084 recovery Methods 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 31
- 150000001412 amines Chemical class 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 35
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000001172 regenerating effect Effects 0.000 abstract description 5
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- -1 alcohol amine Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/40096—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating by using electrical resistance heating
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a carbon dioxide capture system of a lime kiln, which comprises a dust removal system, a drying system and a carbon dioxide recovery system; the method comprises the steps of dedusting and purifying lime kiln waste gas and then recovering carbon dioxide, wherein a cyclone separator is adopted by a dedusting system to centrifugally separate the lime kiln waste gas into fine dust particles, saturated sodium bicarbonate solution is adopted by a drying system to adsorb acid gas in the lime kiln waste gas and then concentrated sulfuric acid is used to remove water vapor in the lime kiln waste gas, and an amine solid adsorbent is adopted by a carbon dioxide recovery system to adsorb carbon dioxide and then the carbon dioxide is recovered through heating separation. The invention aims to solve the problem of overlarge energy consumption for heating and regenerating the amine solid adsorbent, has low energy consumption for heating and regenerating the solid adsorbent by utilizing the principle that the electrode can heat the metal sheet, realizes the cyclic utilization of the carbon dioxide adsorbent and has higher utilization efficiency of the adsorbent.
Description
Technical Field
The invention relates to a carbon dioxide capture system of a lime kiln.
Background
Currently, many carbon dioxide capture technologies are widely studied, including chemical absorption, chemical adsorption, membrane separation, and the like. Among them, the CO2 capture process by the liquid amine absorption method has been put into practical use, and the method has the advantages of high efficiency, large absorption capacity and the like. However, the method has many disadvantages that the method is limited to be widely used, such as that the absorption performance of the alcohol amine solution is reduced due to easy oxidative degradation and volatilization of the alcohol amine solution, the regeneration consumption of the alcohol amine solution is large, and the like.
Further, solid adsorbents are regarded as important because their operation method is simple and their corrosiveness to equipment is weak, but these adsorbents generally have disadvantages such as poor selectivity and low adsorption amount. In order to further increase the adsorption capacity and adsorption/desorption rate of CO2, it is considered that liquid organic amine is loaded on a porous carrier by a physical impregnation method or a chemical grafting method, so as to prepare the amine solid adsorbent.
However, in order to recycle the adsorbent, the amine-based solid adsorbent needs to be heated and regenerated, but the energy consumption of the apparatus increases, the adsorption process is complicated, and the apparatus is dispersed.
Disclosure of Invention
The invention aims to solve the problems and provide a carbon dioxide capture system of a lime kiln, which realizes the recycling of an amine solid adsorbent by using an electrode.
In order to achieve the purpose, the invention is realized by the following technical scheme: a carbon dioxide capture system of a lime kiln comprises a dust removal system, a drying system and a carbon dioxide recovery system; the method comprises the following steps that lime kiln waste gas is dedusted and purified and then carbon dioxide is recovered, the dedusting system adopts a cyclone separator to centrifugally separate the lime kiln waste gas to obtain fine dust particles, the drying system adopts saturated sodium bicarbonate solution to adsorb acid gas in the lime kiln waste gas and then utilizes concentrated sulfuric acid to remove water vapor in the lime kiln waste gas, the carbon dioxide recovery system adopts amine solid adsorbent to adsorb carbon dioxide and then recovers the carbon dioxide through heating separation, the dedusting system further comprises a primary dedusting device and a secondary cooling device, and the lime kiln waste gas is dedusted by the primary dedusting device and then undergoes secondary cooling treatment; the primary dust removal device comprises a dust removal pipe and a dust removal cyclone separator, the secondary cooling device comprises a cooling pipe and a cooling cyclone separator, lime kiln waste gas enters from the dust removal pipe, fine dust particles are separated by the dust removal cyclone separator, cooling water is separated by the cooling cyclone separator after the temperature of the lime kiln waste gas is reduced by the cooling pipe, and the lime kiln waste gas enters the drying system; and the amine solid adsorbent is separated and recovered with an electrode heating device.
Furthermore, the cross sectional areas of the two ends of the dust removing pipe and the cooling pipe are large, the area of the middle part of the dust removing pipe and the area of the cooling pipe are small, a throat is formed in the middle part of the dust removing pipe and the cooling pipe, and dust removing and cooling treatment are carried out at the outlet of the throat; the periphery of the throat pipe is uniformly provided with nozzles formed by a plurality of small holes, and the nozzles are connected with a water supply ring pipe arranged above the throat pipe through rubber pipes.
Still further, the aperture of the small hole in the nozzle is 3.5mm, and the installation angle is 25-30 degrees.
Particularly, the electrode heating device comprises a central electrode, an external electrode and two groups of corrugated metal sheets for connecting the central electrode and the external electrode, wherein an insulating coating is coated between the two groups of corrugated metal sheets; when voltage is applied between the central electrode and the external electrode, the two groups of corrugated metal sheets are heated to play a heating role; the two groups of corrugated metal sheets form a spiral heater, and a plurality of groups of hollow circles which are surrounded by the corrugated metal sheets and can be used for the amine solid adsorbent to rotate and fall are formed in the spiral heater.
Further, the carbon dioxide recovery system comprises a recovery chamber, an electrode heating device, an adsorbent recovery chamber, an adsorbent storage chamber and an adsorbent overflow device; the adsorbent overflow device is arranged in the recovery chamber and comprises a cam connected with the power structure and an overflow plate rotating around a rotating shaft; the overflow plate is used for placing an adsorbent, and the adsorbent falls onto the overflow plate from the adsorbent storage chamber; the lower part of the overflow plate is in lap joint with the cam, and the rotation of the cam controls the overflow plate to rotate around the rotating shaft, so that the overflow plate can ascend and descend; the tail end of the overflow plate is provided with a connecting plate, the adsorbent moves to the connecting plate from the overflow plate and then falls onto the electrode heating device, and the rising of the overflow plate realizes the free falling of the adsorbent; an adsorbent recovery chamber is arranged below the cam, an adsorbent guide plate is arranged below the electrode heating device, and an adsorbent storage chamber is communicated with the adsorbent recovery chamber; the amine solid adsorbent is heated and separated from the carbon dioxide after adsorbing the carbon dioxide on the overflow plate and falling into the electrode heating device along with the rotation upper part of the overflow plate, the regenerated amine solid adsorbent falls into the adsorbent recovery chamber along with the rotation of the cam after falling from the adsorbent guide plate, the amine solid adsorbent in the adsorbent recovery chamber is communicated with the adsorbent storage chamber, and the storage door below the adsorbent storage chamber falls onto the overflow plate after rotating along with the overflow plate.
Furthermore, a waste gas outlet is arranged above the recovery chamber, and a carbon dioxide outlet is arranged on one side of the electrode heating device; a plurality of groups of electrode heating devices are arranged in parallel from top to bottom, and a communicating pipe is arranged below the electrode heating device at the top and is communicated with lime kiln waste gas treated by a drying system for circulation, so that the waste gas collecting efficiency is improved.
Compared with the prior art, the invention has the beneficial effects that:
the invention aims to solve the problem of overlarge energy consumption for heating and regenerating the amine solid adsorbent, and has the advantages of simple equipment, small volume, compact structure and low investment, wherein the nozzles formed by a plurality of small holes are uniformly arranged on the periphery of the throat pipe to cool the solid adsorbent, then the cyclone separator separates dust and dries the dust, the solid adsorbent is heated and regenerated by utilizing the principle that the electrode can heat the metal sheet, the cyclic utilization of the carbon dioxide adsorbent is realized, and the utilization efficiency of the adsorbent is higher.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the dust removal tube and the cooling tube according to the present invention;
FIG. 3 is a schematic view of the structure of the center electrode and the metal sheet of the present invention;
FIG. 4 is a schematic structural diagram of an electrode heating apparatus according to the present invention.
Detailed Description
The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.
The invention aims at the problem that the energy consumption for heating and regenerating the amine solid adsorbent is increased, and the energy consumption for heating and regenerating the solid adsorbent by adopting the principle that the electrode can heat the metal sheet is low, please refer to fig. 1-4:
a carbon dioxide capture system of a lime kiln comprises a dust removal system, a drying system and a carbon dioxide recovery system; the method comprises the following steps of recovering carbon dioxide after dust removal and purification of lime kiln waste gas, centrifugally separating the lime kiln waste gas by a dust removal system through a cyclone separator to obtain fine dust particles, adsorbing acid gas in the lime kiln waste gas by saturated sodium bicarbonate solution by a drying system, removing water vapor in the lime kiln waste gas by concentrated sulfuric acid, adsorbing the carbon dioxide by an amine solid adsorbent by the carbon dioxide recovery system, and then recovering the carbon dioxide through heating separation, wherein the temperature of the lime kiln waste gas is higher, and the lime kiln waste gas is cooled before being separated, and the treatment method is as follows: the dust removal system also comprises a step of cooling the lime kiln waste gas, wherein the lime kiln waste gas comprises a primary dust removal device 100 and a secondary cooling device 200, and the lime kiln waste gas is subjected to secondary cooling treatment after being subjected to dust removal by the primary dust removal device 100; the primary dust removal device 100 comprises a dust removal pipe 101 and a dust removal cyclone separator 102, the secondary cooling device 200 comprises a cooling pipe 201 and a cooling cyclone separator 202, lime kiln waste gas enters from the dust removal pipe 101, fine dust particles are separated by the dust removal cyclone separator 102, cooling water is separated by the cooling cyclone separator 202 after the temperature of the lime kiln waste gas is reduced by the cooling pipe 201, and the lime kiln waste gas enters a drying system; the cross sectional areas of the two ends of the dust removing pipe 101 and the cooling pipe 201 are large, the middle area is small, the throat pipe 103 is formed in the middle part, and dust removing and cooling treatment are carried out on the throat pipe 103; nozzles 104 formed by a plurality of small holes are uniformly arranged on the periphery of the throat 103, and the nozzles 104 are connected with a water supply ring pipe 106 arranged above the throat through rubber pipes 105; the aperture of the small hole in the nozzle 104 is 3.5mm, and the installation angle is 25-30 degrees.
Because the cooling treatment produces and waste gas from the vapor of taking, and then need carry out dewatering treatment to limekiln waste gas, its processing mode as follows: absorbing acid gas in the lime kiln waste gas by using a saturated sodium bicarbonate solution, and removing water vapor in the lime kiln waste gas by using concentrated sulfuric acid;
then, the amine solid adsorbent is used for adsorbing carbon dioxide, and then the carbon dioxide is recovered through heating separation; the invention adopts an electrode heating device to separate and recover carbon dioxide, and the treatment mode is as follows:
the carbon dioxide recovery system includes a recovery chamber 401, an electrode heating apparatus 300, an adsorbent recovery chamber 402, an adsorbent storage chamber 403, and an adsorbent overflow apparatus; the sorbent overflow device is arranged in the recovery chamber and comprises a cam 404 connected with a power structure and an overflow plate 405 rotating around a rotating shaft; the overflow plate 405 is used for placing the adsorbent, and the adsorbent falls onto the overflow plate 405 from the inside of the adsorbent storage chamber 403; the lower part of the overflow plate 405 is overlapped with the cam 404, and the rotation of the cam 404 controls the overflow plate 405 to rotate around the rotating shaft 406, so that the overflow plate 405 is lifted and fallen; the tail end of the overflow plate 405 is provided with a connecting plate 407, the adsorbent moves from the overflow plate 405 to the connecting plate 407 and then falls onto the electrode heating device, and the rising of the overflow plate 405 realizes the free falling of the adsorbent; an adsorbent recovery chamber 402 is arranged below the cam 404, an adsorbent guide plate 408 is arranged below the electrode heating device, and an adsorbent storage chamber 403 is communicated with the adsorbent recovery chamber 408;
the electrode heating device 300 comprises a central electrode 301, an outer electrode 302 and two groups of corrugated metal sheets 303 (304) connecting the central electrode 301 and the outer electrode 302, wherein an insulating coating is coated between the two groups of corrugated metal sheets 303 (304); when a voltage is applied between the central electrode 301 and the outer electrode 302, the two groups of corrugated metal sheets 303 (304) are heated to perform a heating function; the two groups of corrugated metal sheets 303 and 304 form a spiral heater, and a plurality of groups of hollow circles surrounded by the corrugated metal sheets 303 and 304 and allowing the amine solid adsorbent to fall down are formed in the spiral heater.
Please refer to fig. 3: the two groups of corrugated metal sheets 303 (304) are overlapped to form a hollow circle for the amine solid adsorbent to fall down and then wound around the central electrode 301 to form a spiral cylinder as shown in fig. 4, and the ends of the two groups of corrugated metal sheets 303 (304) are connected with the outer electrode 302.
The amine solid adsorbent is heated and separated from the carbon dioxide after adsorbing the carbon dioxide on the overflow plate 405 and falling into the electrode heating device 300 along with the rotation of the overflow plate 405, the regenerated amine solid adsorbent falls from the adsorbent guide plate 408 and falls into the adsorbent recovery chamber 402 along with the rotation of the cam 404, the amine solid adsorbent in the adsorbent recovery chamber 402 is communicated with the adsorbent storage chamber 403, and the storage door below the adsorbent storage chamber 403 falls into the overflow plate 405 along with the rotation of the overflow plate 405. As for the amine solid adsorbent in the adsorbent recovery chamber 402, a feeder or a riser can be additionally arranged to communicate with the adsorbent storage chamber 403 so that the adsorbent completes the circulation process;
an exhaust gas outlet 500 is arranged above the recovery chamber 401, and a carbon dioxide outlet 600 is arranged at one side of the electrode heating device 300; a plurality of groups of electrode heating devices 300 are arranged in parallel up and down, and a communicating pipe 700 is arranged below the electrode heating device 300 at the top and is communicated with lime kiln waste gas treated by a drying system for circulation, so that the waste gas collecting efficiency is improved.
The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.
Claims (6)
1. A carbon dioxide capture system of a lime kiln comprises a dust removal system, a drying system and a carbon dioxide recovery system; the method is characterized in that the carbon dioxide is recovered by dedusting and purifying the lime kiln waste gas, the dedusting system adopts a cyclone separator to centrifugally separate the lime kiln waste gas into fine dust particles, the drying system adopts saturated sodium bicarbonate solution to adsorb acid gas in the lime kiln waste gas and then utilizes concentrated sulfuric acid to remove water vapor in the lime kiln waste gas, and the carbon dioxide recovery system adopts amine solid-state adsorbents to adsorb the carbon dioxide and then recovers the carbon dioxide through heating separation, and the method is characterized in that: the dust removal system also comprises a primary dust removal device and a secondary cooling device, wherein the lime kiln waste gas is subjected to cooling treatment and then subjected to secondary cooling treatment after being subjected to dust removal by the primary dust removal device; the primary dust removal device comprises a dust removal pipe and a dust removal cyclone separator, the secondary cooling device comprises a cooling pipe and a cooling cyclone separator, lime kiln waste gas enters from the dust removal pipe, fine dust particles are separated by the dust removal cyclone separator, cooling water is separated by the cooling cyclone separator after the temperature of the lime kiln waste gas is reduced by the cooling pipe, and the lime kiln waste gas enters the drying system; and the amine solid adsorbent is separated and recovered with an electrode heating device.
2. The lime kiln carbon dioxide capture system of claim 1, wherein: the cross sectional areas of the two ends of the dust removing pipe and the cooling pipe are large, the area of the middle part of the dust removing pipe and the area of the middle part of the cooling pipe are small, a throat is formed in the middle part of the dust removing pipe and the cooling pipe, and dust removing and cooling treatment are carried out at the outlet of the throat; the periphery of the throat pipe is uniformly provided with nozzles formed by a plurality of small holes, and the nozzles are connected with a water supply ring pipe arranged above the throat pipe through rubber pipes.
3. The lime kiln carbon dioxide capture system of claim 2, wherein: the aperture of the small hole in the nozzle is 3.5mm, and the installation angle is 25-30 degrees.
4. The lime kiln carbon dioxide capture system of claim 1, wherein: the electrode heating device comprises a central electrode, an external electrode and two groups of corrugated metal sheets for connecting the central electrode and the external electrode, wherein an insulating coating is coated between the two groups of corrugated metal sheets; when voltage is applied between the central electrode and the external electrode, the two groups of corrugated metal sheets are heated to play a heating role; the two groups of corrugated metal sheets form a spiral heater, and a plurality of groups of hollow circles which are surrounded by the corrugated metal sheets and can be used for the amine solid adsorbent to rotate and fall are formed in the spiral heater.
5. The lime kiln carbon dioxide capture system of claim 4, wherein: the carbon dioxide recovery system comprises a recovery chamber, an electrode heating device, an adsorbent recovery chamber, an adsorbent storage chamber and an adsorbent overflow device; the adsorbent overflow device is arranged in the recovery chamber and comprises a cam connected with the power structure and an overflow plate rotating around a rotating shaft; the overflow plate is used for placing an adsorbent, and the adsorbent falls onto the overflow plate from the adsorbent storage chamber; the lower part of the overflow plate is in lap joint with the cam, and the rotation of the cam controls the overflow plate to rotate around the rotating shaft, so that the overflow plate can ascend and descend; the tail end of the overflow plate is provided with a connecting plate, the adsorbent moves to the connecting plate from the overflow plate and then falls onto the electrode heating device, and the rising of the overflow plate realizes the free falling of the adsorbent; an adsorbent recovery chamber is arranged below the cam, an adsorbent guide plate is arranged below the electrode heating device, and an adsorbent storage chamber is communicated with the adsorbent recovery chamber; the amine solid adsorbent is heated and separated from the carbon dioxide after adsorbing the carbon dioxide on the overflow plate and falling into the electrode heating device along with the rotation upper part of the overflow plate, the regenerated amine solid adsorbent falls into the adsorbent recovery chamber along with the rotation of the cam after falling from the adsorbent guide plate, the amine solid adsorbent in the adsorbent recovery chamber is communicated with the adsorbent storage chamber, and the storage door below the adsorbent storage chamber falls onto the overflow plate after rotating along with the overflow plate.
6. The lime kiln carbon dioxide capture system of claim 5, wherein: a waste gas outlet is arranged above the recovery chamber, and a carbon dioxide outlet is arranged at one side of the electrode heating device; a plurality of groups of electrode heating devices are arranged in parallel from top to bottom, and a communicating pipe is arranged below the electrode heating device at the top and is communicated with lime kiln waste gas treated by a drying system for circulation, so that the waste gas collecting efficiency is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111538632.XA CN114191933A (en) | 2021-12-16 | 2021-12-16 | Carbon dioxide capture system of lime kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111538632.XA CN114191933A (en) | 2021-12-16 | 2021-12-16 | Carbon dioxide capture system of lime kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114191933A true CN114191933A (en) | 2022-03-18 |
Family
ID=80654266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111538632.XA Pending CN114191933A (en) | 2021-12-16 | 2021-12-16 | Carbon dioxide capture system of lime kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114191933A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423214A (en) * | 2008-11-20 | 2009-05-06 | 武汉凯迪电力环保有限公司 | Method for catching carbon dioxide in generating plant flue gas by ammonia process and equipment thereof |
| EP2596848A1 (en) * | 2011-11-24 | 2013-05-29 | Korea Institute of Energy Research | Dry carbon dioxide capturing device with multistage supply structure |
| CN108636059A (en) * | 2018-05-03 | 2018-10-12 | 太原理工大学 | A kind of collecting carbonic anhydride and regenerated integrated apparatus and method |
| CN110683544A (en) * | 2018-07-06 | 2020-01-14 | 湖北大学 | Method for improving concentration of carbon dioxide in tail gas of lime rotary kiln |
| CN111665289A (en) * | 2020-05-24 | 2020-09-15 | 苏州铟菲半导体科技有限公司 | Test device and preparation method thereof |
| CN214345217U (en) * | 2020-11-11 | 2021-10-08 | 韶关凯鸿纳米材料有限公司 | Cooling and dust removing device |
-
2021
- 2021-12-16 CN CN202111538632.XA patent/CN114191933A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423214A (en) * | 2008-11-20 | 2009-05-06 | 武汉凯迪电力环保有限公司 | Method for catching carbon dioxide in generating plant flue gas by ammonia process and equipment thereof |
| EP2596848A1 (en) * | 2011-11-24 | 2013-05-29 | Korea Institute of Energy Research | Dry carbon dioxide capturing device with multistage supply structure |
| CN108636059A (en) * | 2018-05-03 | 2018-10-12 | 太原理工大学 | A kind of collecting carbonic anhydride and regenerated integrated apparatus and method |
| CN110683544A (en) * | 2018-07-06 | 2020-01-14 | 湖北大学 | Method for improving concentration of carbon dioxide in tail gas of lime rotary kiln |
| CN111665289A (en) * | 2020-05-24 | 2020-09-15 | 苏州铟菲半导体科技有限公司 | Test device and preparation method thereof |
| CN214345217U (en) * | 2020-11-11 | 2021-10-08 | 韶关凯鸿纳米材料有限公司 | Cooling and dust removing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101362076B (en) | Regeneration method of active carbon absorbent | |
| CN113694688B (en) | Device and method for absorbing, capturing and desorbing carbon dioxide by using solid amine | |
| US5908490A (en) | Organic solvent recovering system and organic solvent recovering method | |
| CN104740973A (en) | Recycling device of organic solvent in high-concentration organic waste gas | |
| WO2022042760A1 (en) | Treatment apparatus and treatment method for exhaust gas containing organic matter | |
| CN101259357A (en) | Method and device for recovering organic solvent from waste gases of printing industry | |
| CN105833666A (en) | VOCs waste gas treatment method | |
| CN112263890A (en) | Flue gas waste heat utilization type carbon capture method and system | |
| CN116059784A (en) | Method and system for capturing carbon dioxide in flue gas by pressure swing adsorption | |
| CN110743521B (en) | Mercury-absorbing coke sinking type rapid desorption system and method | |
| CN106540510A (en) | It is a kind of can Detachment Activity charcoal fluidised bed adsorption dichloroethanes technique | |
| CN114191933A (en) | Carbon dioxide capture system of lime kiln | |
| KR100547904B1 (en) | CO2 Separation Device Using Solid Absorber and CO2 Separation Method Using The Same | |
| CN115193245A (en) | Adsorbing and recovering CO in flue gas 2 System and method | |
| CN114130311B (en) | Integrated device and method for preparing sulfur by activated coke regeneration and cooperative reduction | |
| CN115006976A (en) | Tail gas degree of depth treatment system | |
| CN211098274U (en) | Organic waste gas two-stage adsorption recovery processing system | |
| CN109200617B (en) | Method for treating hydrogen peroxide oxidized tail gas | |
| CN112933860A (en) | A tail gas solvent recovery system for mica insulation material production process | |
| JP3922449B2 (en) | Organic solvent recovery system | |
| TWI665006B (en) | Exhaust gas purification equipment | |
| CN106215674B (en) | flue gas desulfurization device and method | |
| CN218166327U (en) | High-adsorptivity organic waste gas absorption device | |
| CN111054098A (en) | Regeneration method and device for acid gas-containing solvent | |
| CN220834581U (en) | Organic waste gas treatment 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220318 |
|
| RJ01 | Rejection of invention patent application after publication |