CN111545012A - Purifying and removing SO in flue gas2And method of use thereof - Google Patents
Purifying and removing SO in flue gas2And method of use thereof Download PDFInfo
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- CN111545012A CN111545012A CN202010405582.7A CN202010405582A CN111545012A CN 111545012 A CN111545012 A CN 111545012A CN 202010405582 A CN202010405582 A CN 202010405582A CN 111545012 A CN111545012 A CN 111545012A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 142
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 122
- 238000001179 sorption measurement Methods 0.000 claims abstract description 97
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000000746 purification Methods 0.000 claims abstract description 53
- 239000012629 purifying agent Substances 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 239000013335 mesoporous material Substances 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 238000003795 desorption Methods 0.000 claims description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 239000003463 adsorbent Substances 0.000 abstract description 21
- 238000009434 installation Methods 0.000 abstract description 9
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002803 fossil fuel Substances 0.000 description 3
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000047 product Substances 0.000 description 2
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- 238000005507 spraying Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- ODUCDPQEXGNKDN-UHFFFAOYSA-N Nitrogen oxide(NO) Natural products O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- 239000013618 particulate matter Substances 0.000 description 1
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- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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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
- B01D53/04—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 with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
Abstract
The invention discloses a method for purifying and removing SO in flue gas2The device and the using method thereof, a flue gas distribution chamber (10), a purification box main body (7) and a purification flue gas exhaust chamber (2) are sequentially connected from bottom to top, a porous adsorption device bearing plate (8) is arranged between the flue gas distribution chamber (10) and the purification box main body (7), an adsorption device isolation net (4) is arranged between the purification box main body (7) and the purification flue gas exhaust chamber (2), an adsorption device (12) is arranged in the purification box main body (7), the cross section of the adsorption device (12) is an assembly formed by 3-7 layers of rectangular structures, and a gap formed by 3-7 layers of rectangular structures is filled with a sulfur dioxide adsorption purifying agent-silicon-based mesoporous material. The invention adopts the adsorbent device, has compact structure, small floor area, convenient installation and replacement of the adsorbent device and high temperature resistance, overcomes the phenomenon of local saturation of the adsorbent device in the prior art due to uneven feeding, and prolongs the service life of the sulfur dioxide absorbent purifying agent in the adsorbent device.
Description
Technical Field
The invention belongs to the technical field of sulfur-containing flue gas treatment, and particularly relates to a method for removing SO in flue gas2And methods of using the same.
Background
After the combustion of fossil fuel such as coal and the like, a large amount of flue gas polluting air is generated and is accompanied by SO2And (5) discharging the gas. This type of flue gas is a complex mixture of residual air, gaseous pollutants and dust, etc. The untreated flue gas seriously pollutes the atmosphere, threatens the atmospheric environment, harms the health of people, seriously influences the growth of plants and the like. In large cities with intensive population and developed industry, acid rain with different degrees appears every year, which directly affects the life and health of people, SO that SO in smoke gas2Removal is imperative.
In general, the complex pollutant components of the flue gas are mainly the high-temperature reformate of fossil fuels, mainly comprising: particulate matter, sulfur dioxide (SO)2) Nitrogen Oxide (NO)x) Hydrocarbon compound (C)xHy) Etc., wherein the particulates in turn comprise ash, oil droplets and other pyrolysis products of the fuel. SO in flue gas2The most harmful, since it has been identified as an important precursor to the pollution phenomena of acid rain and photochemical smog. The special effect is that the product can be used for harming buildings, historic sites, plants, animals and human beings.
To eliminate the harm of flue gas from fossil fuel combustion and reduce emissions, more SO has been generated2Removal device for SO2And the direct treatment of its associated contaminating components. Existing SO2The mode of the adsorption device is generally composed of an adsorption column body filled with adsorbent. If the adsorption apparatus main body includes a plurality of adsorption apparatus main bodies, the adsorption apparatus main bodies are connected by a pipeline. The adsorption device or the adsorption system has certain defects, which are mainly embodied as follows: (1) multiple desorption of SO by filled adsorbent2Hardening phenomenon exists later, so that the replacement of the adsorbent is difficult or the replacement flexibility is extremely poor; (2) the adsorption main bodies are connected by pipelines, and a certain distance is needed, so that the whole adsorption system occupies a large area; (3) the prior adsorbent has poor high temperature resistance, for example, when active carbon is taken as the adsorbent, the desorption capacity of the active carbon is sharply reduced under high-temperature and high-humidity environment. For further development and supply of SO2The development of more novel and efficient SO is needed2The removing device is used for achieving the purpose of environmental protection.
At present, the adsorption method for removing sulfur dioxide in flue gas is a technical development trend in the field. The experimental research on the removal of sulfur dioxide from flue gas by an adsorption method, published in the university of Wuhan Engineers, journal of 2008, 2, uses modified activated carbon, zeolite, rectorite and fly ash as solid adsorbents, researches the feasibility of removing low-concentration sulfur dioxide from simulated flue gas by the adsorption method, and compares the desulfurization effects of a plurality of solid adsorbents2The adsorption capacity of the activated carbon is in the order of>Fly ash>Rectorite>The zeolite has the best adsorption effect of activated carbon, the maximum desulfurization rate can reach 98.71 percent, and the average desulfurization rate can also reach 66.58 percent. However, the study therein also shows that the adsorption amount decreases as the adsorption temperature increases.
Disclosure of Invention
The invention aims to solve the problems that the existing removing device has large occupied area and can not remove SO at high temperature2And the process for replacing the adsorbent is complex, and the like, thereby providing an adsorbent device which has compact structure, small occupied area and installationHigh temperature resistant purification and removal of SO in flue gas2The apparatus of (1).
The invention also aims to provide a method for purifying and removing SO in flue gas2The use of the apparatus of (1).
In order to achieve the purpose, the invention provides a method for purifying and removing SO in flue gas2The device adopts the following technical scheme:
the invention relates to a method for purifying and removing SO in flue gas2The device comprises a flue gas distribution chamber, a purification box main body and a purified flue gas exhaust chamber, wherein a flue gas inlet pipe is arranged on the flue gas distribution chamber, a purified flue gas outlet pipe is arranged on the purified flue gas exhaust chamber, and a valve is arranged on the flue gas inlet pipe. In order to reduce the floor space of the whole device, the flue gas distribution chamber, the purification box main body and the purified flue gas exhaust chamber are sequentially connected from bottom to top; a bearing plate 8 of a perforated adsorption device for bearing a sulfur dioxide adsorption purifying agent is arranged between the flue gas distribution chamber and the purifying box main body; an adsorption device isolation net is arranged between the purification box main body and the purification flue gas exhaust chamber, an adsorption device is arranged in the purification box main body, and the adsorption device isolation net is arranged to prevent sulfur dioxide adsorption purifying agent from escaping from the purification box main body; the cross section of the adsorption device is an assembly formed by 3-7 layers of rectangular structures, and sulfur dioxide adsorption purificant-silicon-based mesoporous material or activated carbon powder is filled in a square-shaped gap formed by the 3-7 layers of rectangular structures.
The adsorption device of the invention can also be another structure; the cross section of the adsorption device is an assembly formed by 3-7 layers of concentric circle structures, and a sulfur dioxide adsorption purifying agent, namely a silicon-based mesoporous material or activated carbon powder, is filled in an annular gap formed by the 3-7 layers of concentric circle structures.
The purifying box main body is generally composed of an upper box body and a lower box body, an adsorption device bearing plate with holes is also arranged between the upper box body and the lower box body, and adsorption device installation room doors are arranged on the upper box body and the lower box body so as to be convenient for installing or unloading the adsorption devices.
The upper box body and the lower box body are respectively provided with an adsorption device observation window so as to facilitateObservation of adsorbent for SO purification2Whether or not saturation is reached.
In order to facilitate the addition and discharge of the desorption agent, a desorption agent feed port is arranged on the purified flue gas exhaust chamber, and a desorption agent discharge pipe is arranged at the lower part of the flue gas distribution chamber. The desorption agent can adopt 1-5% ammonia water or water.
The invention relates to a method for purifying and removing SO in flue gas2The using method of the device comprises the following steps: opening a valve on the flue gas inlet pipe and containing SO2The flue gas is fed into a flue gas distribution chamber and enters the purifying box main body through a bearing plate with a porous adsorption device to be adsorbed and purified, and the purified flue gas is collected to a purified flue gas exhaust chamber through an adsorption device isolation net and then is exhausted through a purified flue gas outlet pipe; when the sulfur dioxide absorption purifying agent filled in the purifying box main body purifies SO2After the gas is saturated, closing a valve on a flue gas inlet pipe, then opening a desorption agent inlet, spraying water mist desorption agent into a purified flue gas exhaust chamber, gradually washing sulfur dioxide adsorption purifying agent in a purifying box main body, and discharging water mist desorption agent effluent at a desorption agent discharge pipe at the bottom of a flue gas distribution chamber; after the desorption process is finished, the flue gas inlet pipe is opened again to develop a new round of SO in the flue gas2The purification process of (1).
Compared with the prior art, the invention purifies and removes SO in the flue gas2The device and the using method thereof have the following beneficial effects after adopting the technical scheme:
(1) the flue gas distribution chamber, the purification box main body and the purification flue gas exhaust chamber are sequentially connected from bottom to top, and the longitudinal and vertical connection mode has compact structural design and can effectively reduce the occupied area of the sulfur dioxide adsorption and removal device.
(2) The vertical adjacent type of the adsorber is designed, and the inside of the adsorber is provided with a square-shaped or circular-ring-shaped separation chamber, sulfur dioxide adsorption purifying agent is filled in the square-shaped or circular-ring-shaped separation chamber, so that flue gas fed from the flue gas distribution chamber can be uniformly distributed in each square-shaped or circular-ring-shaped separation chamber, on one hand, sulfur dioxide is adsorbed and purified more uniformly, synchronous saturation and synchronous replacement can be achieved, the phenomenon that the adsorber in the prior art is locally saturated due to uneven feeding is overcome, and the service life of the sulfur dioxide adsorption purifying agent in the adsorber is prolonged.
(3) Go up box, lower box and all be equipped with adsorption equipment installation room door, can install room door through opening adsorption equipment, can realize the installation and the change of adsorption equipment fast.
(4) The invention adopts the silicon-based mesoporous material as the sulfur dioxide adsorption purifying agent, has high-temperature adsorption capacity and long-term adsorption capacity, can quickly and efficiently treat sulfur dioxide in flue gas, has a desorption process, is convenient to replace the adsorbent, and can greatly improve the environmental protection effect. The sulfur dioxide eluted by the desorption agent can be recycled, so that the resource utilization of the sulfur dioxide is realized.
Drawings
FIG. 1 shows the purification and removal of SO from flue gas according to the present invention2The structural schematic diagram of the device of (1);
FIG. 2 is a schematic cross-sectional view of the adsorption device of the present invention when the main body of the purification box is rectangular;
FIG. 3 is a schematic sectional view of the top view of the rectangular main body of the purification box of the present invention with the adsorption device mounted thereon;
FIG. 4 is a schematic top view of a perforated adsorbent device support plate in the rectangular shape of the main body of the purification box of the present invention;
FIG. 5 is a schematic sectional view of the top view of the purification box of the present invention, in which the adsorption device is installed when the purification box main body is circular.
The reference signs are: 1-desorbent feed port; 2-purifying the flue gas exhaust chamber; 3-purifying the flue gas outlet pipe; 4-an adsorption device isolation net; 5-mounting a door of the adsorption device; 6-an adsorption device observation window; 7-purifying the box body; 8-a bearing plate of the adsorption device with holes; 9-a flue gas inlet pipe; 10-a flue gas distribution chamber; 11-desorbent discharge pipe; 12-adsorption device.
Detailed Description
For better describing the invention, the following description will be made with reference to the accompanying drawings for purifying and removing SO from flue gas2The apparatus and methods of use of the same are described in further detail.
The book shown by figure 1The invention purifies and removes SO in flue gas2The structure schematic diagram of the device and the combination of fig. 2, fig. 3 and fig. 4 show that the device for purifying and removing SO2 in flue gas comprises a flue gas distribution chamber 10, a purification box main body 7 and a purified flue gas exhaust chamber 2; a flue gas inlet pipe 9 is arranged on the flue gas distribution chamber 10, and a desorption agent discharge pipe 11 is arranged at the lower part of the flue gas distribution chamber 10; the purification flue gas exhaust chamber 2 is provided with a purification flue gas outlet pipe 3 and a desorption agent feed inlet 1, a flue gas distribution chamber 10, a purification box main body 7 and the purification flue gas exhaust chamber 2 are sequentially connected from bottom to top, an adsorption device bearing plate 8 with holes is arranged between the flue gas distribution chamber 10 and the purification box main body 7, an adsorption device isolation net 4 is arranged between the purification box main body 7 and the purification flue gas exhaust chamber 2, and an adsorption device 12 is arranged in the purification box main body 7. The purification box main body 7 is formed by combining an upper box body and a lower box body, a perforated adsorption device bearing plate 8 is also arranged between the upper box body and the lower box body, adsorption device installation chamber doors 5 are arranged on the upper box body and the lower box body, the adsorption device installation chamber doors 5 also have an access function of overhauling adsorption devices 12, the sealing performance of the adsorption device installation chamber doors 5 is well guaranteed, and the specific size of the adsorption devices 12 and the size of the matched adsorption device installation chamber doors 5 are determined according to related requirements; and the upper box body and the lower box body are respectively provided with an adsorption device observation window 6, and more observation windows 6 can be added according to requirements. The cross section of the adsorption device 12 is an assembly formed by 3-7 layers of rectangular structures, and sulfur dioxide adsorption purificant-silicon-based mesoporous material is filled in gaps formed by the 3-7 layers of rectangular structures. In addition, the invention purifies and removes SO in the flue gas2The device still need set up the bearing support, designs and makes according to actual demand.
As shown in FIG. 5, the cross section of the purifying box body of the present invention is a schematic top view of the adsorbing device when it is circular, and is shown in FIG. 1, the cross section of the adsorbing device 12 can be an assembly of 3-7 concentric circular structures, and the gap formed by the 3-7 concentric circular structures is filled with a sulfur dioxide adsorbing and purifying agent, i.e., a silicon-based mesoporous material.
FIG. 1 shows a process for purifying and removing SO from flue gas2The structural schematic diagram of the device shows that the device provided by the invention purifies and removes SO in flue gas2The using method of the device comprises the following steps: opening a valve on the flue gas inlet pipe 9 and containing SO2The flue gas is fed into a flue gas distribution chamber 10 and enters a purification box main body 7 through an adsorption device bearing plate 8 with holes to be adsorbed and purified, and the purified flue gas is collected to a purified flue gas exhaust chamber 2 through an adsorption device isolation net 4 and then is exhausted through a purified flue gas outlet pipe 3; when the sulfur dioxide absorption purifying agent filled in the purifying box main body 7 purifies SO2After saturation, closing a valve on a flue gas inlet pipe 9, then opening a desorption agent inlet 1, spraying water mist desorption agent into a purified flue gas exhaust chamber 2, then gradually washing sulfur dioxide in a purification box main body 7 to adsorb the purification agent, and discharging water mist desorption agent effluent at a desorption agent discharge pipe 11 at the bottom of a flue gas distribution chamber 10; after the desorption process is finished, the flue gas inlet pipe 9 is opened, and the SO in the flue gas of a new round is developed2The purification process of (1).
In practical application, the invention purifies and removes SO in flue gas2The devices can be used in parallel in pairs, and can also be used alternately by one device and by another device.
The invention relates to a method for purifying and removing SO in flue gas2The working principle of the device and the using method thereof is as follows: the external flue gas can enter a flue gas distribution chamber 10 from a flue gas inlet pipe 9 through the pressure of a compressor, a blower or other air-extracting and pressurizing devices or a flue gas pipeline, the flue gas penetrates through a flue gas inlet pipe 8 and enters a purification box main body 7 to be purified (the purification box main body 7 is formed by combining an upper box body and a lower box body and is separated by a bearing plate 8 with a hole-containing adsorption device), and the purified gas gradually collects in a purified flue gas exhaust chamber 2 through an adsorbent device separation net 4 (for separating adsorbent particles which can be blown down), and then is exhausted through a purified flue gas outlet pipe 3; when the adsorption device 12 in the purifying box main body 7 purifies SO2After saturation, the valve of the flue gas inlet pipe 9 is closed. Then, the desorption agent feed port 1 is opened, the sprayed water mist desorption agent enters the purified flue gas exhaust chamber 2, then the adsorption device 12 in the purification box main body 7 is gradually washed, and the desorption agent discharge pipe of the desorption agent effluent liquid at the bottom of the flue gas distribution chamber 1011 and discharging. After the desorption process is finished, the flue gas inlet pipe 9 is opened, and a new round of flue gas SO can be developed2And (5) purifying. After the observation window 6 of the adsorption device observes that the adsorbent or the adsorption device 12 is failed, the door 5 of the installation chamber of the adsorption device is opened to take out the adsorption device 12, and then a new adsorbent device 12 is replaced and sealed or a new sulfur dioxide adsorption purifying agent is supplemented. The stable and orderly operation of the system and the SO in the flue gas are achieved by adjusting different adsorption processes, desorption processes and replacement and supplement filling processes of the adsorbent device/the sulfur dioxide adsorption purifying agent2High-efficiency purification of gas.
Claims (6)
1. Purifying and removing SO in flue gas2The device of (2), contain flue gas distribution chamber (10), purifying box main part (7), purify flue gas exhaust chamber (2), be equipped with flue gas intake pipe (9) on flue gas distribution chamber (10), be equipped with on purifying flue gas exhaust chamber (2) and purify flue gas outlet duct (3), be equipped with valve, its characterized in that on flue gas intake pipe (9): the flue gas distribution chamber (10), the purification box main body (7) and the purified flue gas exhaust chamber (2) are sequentially connected from bottom to top, an adsorption device bearing plate (8) with holes is arranged between the flue gas distribution chamber (10) and the purification box main body (7), an adsorption device isolation net (4) is arranged between the purification box main body (7) and the purified flue gas exhaust chamber (2), and an adsorption device (12) is arranged in the purification box main body (7); the cross section of the adsorption device (12) is an assembly formed by 3-7 layers of rectangular structures, and sulfur dioxide adsorption purificant-silicon-based mesoporous material or activated carbon powder is filled in a square-shaped gap formed by the 3-7 layers of rectangular structures.
2. Purifying and removing SO in flue gas2The device of (2), contain flue gas distribution chamber (10), purifying box main part (7), purify flue gas exhaust chamber (2), be equipped with flue gas intake pipe (9) on flue gas distribution chamber (10), be equipped with on purifying flue gas exhaust chamber (2) and purify flue gas outlet duct (3), be equipped with valve, its characterized in that on flue gas intake pipe (9): the flue gas distribution chamber (10), the purification box main body (7) and the purified flue gas exhaust chamber (2) are sequentially connected from bottom to top, an adsorption device bearing plate (8) with holes is arranged between the flue gas distribution chamber (10) and the purification box main body (7), and the purification box main body is provided with a support plate (8) for an adsorption device(7) An adsorption device isolation net (4) is arranged between the purification box body and the purification flue gas exhaust chamber (2), and an adsorption device (12) is arranged in the purification box body (7); the cross section of the adsorption device (12) is an assembly formed by 3-7 layers of concentric circle structures, and a sulfur dioxide adsorption purifying agent, namely a silicon-based mesoporous material or activated carbon powder, is filled in an annular gap formed by the 3-7 layers of concentric circle structures.
3. A method of purifying and removing SO from flue gas as claimed in claim 1 or 22The device of (2), characterized in that: the purifying box main body (7) is composed of an upper box body and a lower box body, a bearing plate (8) of the adsorption device with holes is arranged between the upper box body and the lower box body, and door (5) for installing the adsorption device is arranged on the upper box body and the lower box body.
4. A method of cleaning and removing SO from flue gas as claimed in claim 42The device of (2), characterized in that: and the upper box body and the lower box body are respectively provided with an adsorption device observation window (6).
5. The method of claim 4 for purifying and removing SO from flue gas2The device of (2), characterized in that: a desorption agent feed port (1) is arranged on the purified flue gas exhaust chamber (2), and a desorption agent discharge pipe (11) is arranged at the lower part of the flue gas distribution chamber (10).
6. The method for purifying and removing SO in flue gas as claimed in claim 52The use method of the device is characterized in that: opening a valve on the flue gas inlet pipe (9) and containing SO2The flue gas is fed into a flue gas distribution chamber (10) and enters a purification box main body (7) through an adsorption device bearing plate (8) with holes to be adsorbed and purified, and the purified flue gas is converged into a purified flue gas exhaust chamber (2) through an adsorption device isolation net (4) and then is exhausted through a purified flue gas outlet pipe (3); when the sulfur dioxide absorption purifying agent filled in the purifying box main body (7) purifies SO2After saturation, the valve on the flue gas inlet pipe (9) is closed, then the desorption agent inlet (1) is opened, the atomized desorption agent is sprayed into the purified flue gas exhaust chamber (2), and then the purified flue gas exhaust chamber is gradually washedCleaning sulfur dioxide in the purifying box main body (7) to adsorb a purifying agent, and discharging the effluent of the water mist-shaped desorption agent at a desorption agent discharge pipe (11) at the bottom of the flue gas distribution chamber (10); after the desorption process is finished, the flue gas inlet pipe (9) is opened, and the SO in the flue gas of a new round is carried out2The purification process of (1).
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| CN202010405582.7A CN111545012A (en) | 2020-05-14 | 2020-05-14 | Purifying and removing SO in flue gas2And method of use thereof |
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Application publication date: 20200818 |