CN117282227B - Low-temperature flue gas adsorption tower with flue gas mixing function and low-temperature flue gas adsorption system - Google Patents
Low-temperature flue gas adsorption tower with flue gas mixing function and low-temperature flue gas adsorption system Download PDFInfo
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- CN117282227B CN117282227B CN202311568369.8A CN202311568369A CN117282227B CN 117282227 B CN117282227 B CN 117282227B CN 202311568369 A CN202311568369 A CN 202311568369A CN 117282227 B CN117282227 B CN 117282227B
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 402
- 239000003546 flue gas Substances 0.000 title claims abstract description 402
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 172
- 238000002156 mixing Methods 0.000 title claims abstract description 162
- 239000003463 adsorbent Substances 0.000 claims description 161
- 230000004888 barrier function Effects 0.000 claims description 38
- 238000005192 partition Methods 0.000 claims description 29
- 239000000779 smoke Substances 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 26
- 238000000605 extraction Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 29
- 238000000746 purification Methods 0.000 abstract description 19
- 239000010410 layer Substances 0.000 description 55
- 239000000463 material Substances 0.000 description 12
- 239000011229 interlayer Substances 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 5
- 230000000670 limiting effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
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- 239000012528 membrane Substances 0.000 description 1
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- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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- 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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
-
- 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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
- B01D53/10—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 moving adsorbents, e.g. rotating beds with dispersed adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention relates to the technical field of flue gas adsorption and purification and discloses a low-temperature flue gas adsorption tower and a low-temperature flue gas adsorption system with a flue gas mixing function. The low-temperature flue gas adsorption tower provided by the embodiment of the invention can be used for stepwise mixing the flue gas so as to improve the uniformity of the distribution of the flue gas on the same horizontal plane and improve the flue gas adsorption and purification effects.
Description
Technical Field
The invention relates to the technical field of flue gas adsorption and purification, in particular to a low-temperature flue gas adsorption tower and a low-temperature flue gas adsorption system with a flue gas mixing function.
Background
The coal-fired flue gas contains a large amount of pollutants, and is required to be discharged after being purified. In the related art, generally, an adsorption bed is arranged in an adsorption tower to adsorb pollutants in flue gas, the flue gas enters a tower body through a flue gas inlet of the adsorption tower, and the flue gas is purified after flowing through the adsorption bed and is discharged from a flue gas outlet. Conventionally, the flue gas adsorption purification is usually high-temperature adsorption, i.e., flue gas discharged from a boiler is cooled to about 200 ℃ by a cooling tower and then enters an adsorption tower for high-temperature adsorption purification. The high-temperature adsorption has the problems that the consumption of the adsorbent is large, the adsorption effect is poor, the content of nitrogen oxides in the purified flue gas after adsorption is high, and near zero emission cannot be realized.
Disclosure of Invention
The present invention has been made based on the findings and knowledge of the inventors regarding the following facts and problems:
in order to overcome the problem of high-temperature adsorption, the related art proposes a flue gas low-temperature adsorption technology, namely, cooling the flue gas into low-temperature flue gas below room temperature, and removing pollutant components in the flue gas through adsorption. In the low-temperature adsorption, the adsorption capacity of the adsorbent is multiplied in the low-temperature environment, compared with the conventional high-temperature flue gas adsorption, the adsorption purification rate is greatly improved, and the near zero emission of flue gas can be realized. However, the inventor has realized through research that, compared with conventional high-temperature adsorption, in the low-temperature adsorption process, the diffusion rate of low-temperature flue gas is low, the flow of low-temperature flue gas in an adsorption tower is not controlled, the flue gas is difficult to uniformly distribute on the cross section of an adsorption bed when passing through the adsorption bed, the flue gas amount passing through partial areas in the adsorption bed is obviously higher, the flue gas purification degree is inconsistent, the flue gas adsorption effect is affected, and the pollutant amount of the adsorbent is different, the adsorption saturation difference of the adsorbent is too large, the adsorbent consumption is high, the adsorption capacity of the adsorbent is wasted, and the cost is increased, so that the problem is more obvious, especially for low-temperature adsorption.
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the invention provides the low-temperature flue gas adsorption tower with the flue gas mixing function, which can be used for carrying out staged mixing on flue gas so as to improve the uniformity of flue gas distribution and improve the flue gas adsorption and purification effects.
The invention also provides a low-temperature flue gas adsorption system.
The low-temperature flue gas adsorption tower with the flue gas mixing function comprises:
the tower body is provided with a flue gas inlet and a flue gas outlet, flue gas below room temperature is input into the tower body through the flue gas inlet, and purified flue gas after adsorption is discharged from the flue gas outlet;
the adsorption layer is arranged in the tower body, the tower body is provided with an adsorbent feeding hole and an adsorbent discharging hole, the adsorption layer is formed by stacking adsorbents input through the adsorbent feeding hole in the tower body, and flue gas input into the tower body is adsorbed and purified into clean flue gas by the adsorption layer;
a barrier member disposed within the tower body to form a flue gas mixing space within the adsorbent layer, the barrier member having an adsorbent flow passage for the adsorbent to flow from above the flue gas mixing space through the flue gas mixing space to below the flue gas mixing space, and a plurality of flue gas vias, wherein flue gas entering the flue gas mixing space from below the flue gas mixing space flows directly into the adsorbent layer above the flue gas mixing space through the flue gas vias and/or into the adsorbent flow passage through the flue gas vias to flow through the adsorbent flow passage into the adsorbent layer above the flue gas mixing space;
the turbulence component is communicated with the flue gas mixing space and is used for disturbing the flue gas in the flue gas mixing space so as to uniformly mix the flue gas in the flue gas mixing space.
According to the low-temperature flue gas adsorption tower with the flue gas mixing function, the flue gas is adsorbed at low temperature, so that the purification effect is improved, and near zero emission can be realized. In addition, by forming the flue gas mixing space in the adsorption layer, the low-temperature flue gas entering the flue gas mixing space is remixed under the action of the turbulence component, so that the uniformity of low-temperature flue gas distribution in the same horizontal plane is improved, the flue gas adsorption and purification effects are improved, the adsorption saturation of the adsorbent is uniform, the adsorption capacity and the adsorption capacity utilization rate of the adsorbent are improved, the adsorbent consumption is reduced, and the cost is reduced. In particular, for low temperature adsorption, it is more advantageous.
Optionally, the aperture of the flue gas via is smaller than the particle size of the adsorbent to prevent the adsorbent from entering the flue gas mixing space through the flue gas via.
According to the invention, through controlling the aperture of the flue gas via hole, the adsorbent can be prevented from entering the flue gas mixing space from the flue gas via hole, so that the adsorbent can flow only through the adsorbent runner, thereby reliably and stably forming the flue gas mixing space in the adsorption layer, realizing staged mixing of flue gas, reliably ensuring the uniformity of flue gas distribution and the uniformity of adsorption saturation of the adsorbent, and improving the purification effect.
Optionally, the number of the interlayer components is multiple, and the multiple interlayer components are arranged in the tower body at intervals along the vertical direction.
According to the invention, a plurality of interlayer components are arranged, so that a plurality of flue gas mixing spaces can be formed in the adsorption layer, flue gas can be mixed for a plurality of times in the process of passing through the adsorption layer, the distribution uniformity of the flue gas in the adsorption layer is further improved, the adsorption saturation of adsorbents in different areas is more consistent, and the adsorption purification effect of the flue gas and the utilization rate of the adsorption capacity of the adsorbents are further improved.
Optionally, among the plurality of barrier members, the adsorbent stacking thickness above the uppermost barrier member is 200mm to 400mm, and the adsorbent stacking thickness below the lowermost barrier member is 50mm to 150mm.
According to the invention, the positions of the lowest interlayer parts and the lowest interlayer parts in the adsorption layer (namely the thicknesses of the corresponding adsorbent layers) are limited, so that the interference of air flow disturbance of the flue gas inlet and the flue gas outlet to the flue gas in the adsorbent layers is reduced, the low-temperature flue gas is promoted to be more uniformly distributed, the adsorption effect of the adsorbent is ensured, and the interference to the low-temperature flue gas can be avoided.
Optionally, the interlayer part includes baffle and a plurality of blanking pipes, the upper end of blanking pipe with the baffle links to each other, the inner chamber of blanking pipe forms the adsorbent runner, a plurality of the blanking pipe interval arrangement each other is in order to form flue gas mixing space, flue gas via hole is established on the baffle and/or on the lateral wall of blanking pipe is so that flue gas in the flue gas mixing space passes through flue gas via hole flows in the adsorbed layer above the baffle.
According to the invention, the falling material pipe is arranged to enable the adsorbent to flow downwards through the inner cavity of the falling material pipe, the partition plate is arranged to prevent the adsorbent from flowing downwards from the outer side of the falling material pipe, so that a flue gas mixing space can be better formed between the partition plate and the adsorbent material layer stacked below the falling material pipe, the flue gas through holes can be formed in the partition plate and/or the side wall of the falling material pipe, the flue gas through holes in the partition plate can enable the flue gas to directly enter the adsorbent material layer above the flue gas mixing space, and the flue gas through holes in the side wall of the falling material pipe can enable the flue gas to firstly enter the falling material pipe and then rise into the adsorbent material layer above the partition plate.
Optionally, the partition member includes a plurality of blanking pipes, the blanking pipes are reverse taper blanking hoppers, the inner cavities of the blanking pipes form the adsorbent flow channels, the peripheral edges of the upper ends of the blanking pipes are connected with each other to prevent the adsorbent from flowing into the flue gas mixing space between the peripheral edges of the upper ends of the blanking pipes, the lower ends of the blanking pipes are spaced apart from each other to form the flue gas mixing space, and the flue gas through holes are formed in the side walls of the blanking pipes so that flue gas in the flue gas mixing space flows into the blanking pipes through the flue gas through holes and flows into the adsorption layer above the partition member through the inner cavities of the blanking pipes.
According to the invention, the upper end periphery of the blanking pipe is connected with each other by the inverted cone-shaped blanking hopper so as to prevent the adsorbent from flowing from the outer side of the blanking pipe, the lower ends of the blanking pipes are spaced to form a flue gas mixing space, and flue gas flows into the blanking pipe through the flue gas through holes on the side wall of the blanking pipe and then rises into the adsorbent layer above the partition plate.
Optionally, the spoiler comprises:
an exhaust pipe and an air supply pipe communicated with the flue gas mixing space;
the driver is arranged between the exhaust pipe and the air supply pipe and is used for driving the smoke in the smoke mixing space to flow out of the exhaust pipe and flow into the smoke mixing space from the air supply pipe so as to forcedly mix the smoke in the smoke mixing space.
According to the invention, the driver is arranged to forcedly mix the smoke in the smoke mixing space, so that the smoke mixing effect in the smoke mixing space is further improved, the uniformity of the smoke is improved, and the adsorption effect and the utilization rate and consistency of the adsorption capacity of the adsorbent are further improved.
Optionally, the number of the exhaust pipes and the air supply pipes is plural, at least part of the exhaust pipes and/or at least part of the air supply pipes extend to the central part of the flue gas mixing space, and/or
The turbulence member also comprises a plurality of baffles which are arranged in the flue gas mixing space at intervals and in parallel, and/or
The turbulence component further comprises a plurality of baffle plates, the baffle plates are divided into a plurality of groups, the baffle plates in each group of baffle plates are arranged at intervals, and at least part of baffle plate groups are arranged at the air extraction opening of the air extraction pipe and/or the air supply opening of the air supply pipe to guide the flow direction of the flue gas in the corresponding region in the flue gas mixing space.
In the invention, the number of the air extraction pipes and the air supply pipes can be multiple, and the air supply points of part of the air extraction pipes and the air supply pipes are limited according to the flow characteristics of the flue gas in the flue gas mixing space, so that the air flow mixing efficiency in the flue gas mixing space can be improved. Furthermore, the flow guiding device can guide the smoke through the baffle plates, and can guide the smoke exhausted by the air exhaust port and the air supply port, so that the smoke in a local area can be caused to flow directionally, and the air flow mixing efficiency is further improved.
Optionally, a cooling module is arranged on the exhaust pipe and/or the air supply pipe, and the cooling module is used for cooling the flue gas flowing through the exhaust pipe and/or the air supply pipe.
According to the invention, the cooling module is arranged to cool the flue gas in the exhaust pipe and/or the air supply pipe, so that the temperature of the flue gas is further reduced, and the purifying effect of the adsorbent on the flue gas is further improved.
The low-temperature flue gas adsorption system of the invention comprises:
the cooling tower is used for cooling the flue gas into low-temperature flue gas below room temperature;
an adsorption tower, which is a low-temperature flue gas adsorption tower with a flue gas mixing function according to any one of the above, wherein the low-temperature flue gas enters the adsorption tower from the flue gas inlet and contacts with an adsorbent in the adsorption tower to be adsorbed and purified to be purified flue gas, and is discharged from the flue gas outlet;
and the regeneration tower is connected with the adsorption tower and is used for regenerating the adsorption saturated adsorbent discharged from the adsorption tower and sending the regenerated adsorbent back into the adsorption tower.
According to the low-temperature flue gas adsorption system, the flue gas is cooled into the low-temperature flue gas, so that the flue gas and the adsorbent are in contact with each other in a low-temperature environment to perform low-temperature adsorption, the adsorption effect of the adsorbent on pollutants in the flue gas is improved, near zero emission of the flue gas can be realized, the adsorbent is regenerated through the regeneration tower, the adsorbent can be continuously recycled, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a low-temperature flue gas adsorption tower with a flue gas mixing function according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a low-temperature flue gas adsorption tower with a flue gas mixing function according to another embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a low-temperature flue gas adsorption tower with a flue gas mixing function according to another embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a low-temperature flue gas adsorption tower with a flue gas mixing function according to another embodiment of the present invention.
FIG. 5 is a schematic view of the structure of a barrier member according to an embodiment of the present invention.
FIG. 6 is a schematic view of the structure of a barrier member according to another embodiment of the invention.
Fig. 7 is a schematic structural diagram of a low-temperature flue gas adsorption tower with a flue gas mixing function according to still another embodiment of the present invention.
Fig. 8 is a schematic diagram showing the distribution of the suction pipe and the air supply pipe in the embodiment of the present invention.
Fig. 9 is a schematic structural view of an adsorbent unit in an embodiment of the present invention.
Reference numerals:
the device comprises a tower body 1, a flue gas inlet 11, a flue gas outlet 12, an adsorbent feeding port 13 and an adsorbent discharging port 14;
the flue gas mixing space 21, the adsorbent flow passage 22, the flue gas through holes 23, the blanking pipe 24 and the partition plate 25;
the air flow disturbing component 3, the air exhaust pipe 31, the air supply pipe 32, the driver 33 and the baffle 34;
an adsorption layer 4;
a cooling module 5;
adsorbent 61, and gas permeable casing 62.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The low-temperature flue gas adsorption tower with the flue gas mixing function according to the embodiment of the invention is described below with reference to fig. 1 to 8, and comprises a tower body 1, wherein the tower body 1 is provided with a flue gas inlet 11 and a flue gas outlet 12, flue gas below room temperature is input into the tower body 1 from the lower end of the tower body 1 through the flue gas inlet 11, and purified flue gas after adsorption is discharged from the upper end of the tower body 1 through the flue gas outlet 12.
The tower body 1 is internally provided with an adsorption layer 4, the tower body 1 is provided with an adsorbent feed inlet 13 and an adsorbent discharge outlet 14, the adsorbent feed inlet 13 is arranged at the top of the tower body 1, the adsorbent discharge outlet 14 is arranged at the bottom of the tower body 1, the adsorbent input through the adsorbent feed inlet 13 is piled up in the tower body 1 to form the adsorption layer 4, the adsorbent with saturated adsorption is discharged through the adsorbent discharge outlet 14, and the flue gas input into the tower body 1 is purified into clean flue gas through the adsorption layer 4.
In order to uniformly distribute the flue gas entering the adsorption layer 4 on the same horizontal plane, a partition member is arranged in the tower body 1, the partition member is arranged in the adsorption layer 4, the partition member forms a flue gas mixing space 21 in the adsorption layer 4, the partition member is provided with an adsorbent flow passage 22 and a plurality of flue gas through holes 23, the adsorbent flow passage 22 is used for allowing the adsorbent to flow from above the flue gas mixing space 21 to below the flue gas mixing space 21 through the flue gas mixing space 21, wherein the flue gas entering the flue gas mixing space 21 from below the flue gas mixing space 21 directly flows into the adsorption layer 4 above the flue gas mixing space 21 through the flue gas through holes 23 and/or flows into the adsorbent flow passage 22 through the flue gas through holes 23 to flow into the adsorption layer 4 above the flue gas mixing space 21.
In order to improve the mixing sufficiency and the mixing effect of the smoke in the smoke mixing space 21, the embodiment of the invention is also provided with the turbulence component 3, and the turbulence component 3 is communicated with the smoke mixing space 21 and is used for disturbing the smoke in the smoke mixing space 21, so that the smoke in the smoke mixing space 21 is mixed more uniformly, the smoke can be diffused and mixed by the smoke self after entering the smoke mixing space 21, and meanwhile, the smoke can be mixed by the turbulence component 3, so that the mixing effect is improved.
According to the low-temperature flue gas adsorption tower with the flue gas mixing function, the adsorbent can adsorb low-temperature flue gas at low temperature, so that the purification effect is improved, and near zero emission can be realized. In a low-temperature environment, nitrogen oxides in the flue gas generate a low-temperature oxidation adsorption phenomenon on the surfaces of adsorbents such as activated carbon, so that nitric oxide gas which is difficult to adsorb is oxidized into nitrogen dioxide gas which is easy to adsorb, the adsorption capacity is increased by hundreds of times, and in addition, the adsorption capacity to components such as sulfur dioxide, carbon dioxide and heavy metals is multiplied in the low-temperature environment.
Moreover, through forming flue gas mixing space 21 in adsorbed layer 4, make the flue gas that gets into in the flue gas mixing space 21 mix under the effect of vortex part 3, improved the flue gas distribution homogeneity on the same horizontal plane, improved flue gas adsorption purification effect, the adsorption saturation of adsorbent is even, has improved the utilization ratio of adsorbent adsorption capacity and adsorption capacity, has reduced the adsorbent consumption, the cost is reduced.
Further, in the embodiment of the present invention, the low temperature is below room temperature, preferably below zero degrees celsius, and more preferably, the low temperature is between-20 ℃ and-10 ℃. The inventors found through researches that the lower the flue gas temperature is, the more favorable for adsorption purification, but the lower the flue gas temperature is, the complicated equipment structure for cooling the flue gas is caused, and the energy consumption is increased, for example, the cooling equipment, the adsorption tower and the pipeline are required to be provided with heat insulation layers, the sealing performance is required to be high, so that the cost is increased, and in addition, the condensed water is easy to appear in the adsorption tower under the condition of the too low temperature, so that the adsorption is influenced by the adhesion and blockage of the adsorbent. Therefore, it is advantageous to cool the flue gas temperature to-20℃to-10 ℃.
In some embodiments, the flue gas via 23 has a pore size smaller than the particle size of the sorbent to prevent the sorbent from entering the flue gas mixing space 21 through the flue gas via 23.
In other words, by controlling the aperture of the flue gas via hole 23, the embodiment of the invention can prevent the adsorbent from entering the flue gas mixing space 21 from the flue gas via hole 23, so that the adsorbent can only flow through the adsorbent flow channel 22, thereby forming the flue gas mixing space 21 in the adsorption layer 4 more reliably and stably, realizing staged mixing of flue gas, reliably ensuring uniformity of flue gas distribution and uniformity of adsorption saturation of the adsorbent, and improving purification effect.
As shown in fig. 9, alternatively, the adsorbent 61 in the embodiment of the present invention may be a granular or powdery adsorbent, or may be an adsorbent body made of a powdery or granular adsorbent, for example, a spherical body or a cylindrical body formed by the powdery or granular adsorbent 61 through a binder, etc., and of course, a protective shell, for example, a gas permeable membrane covering the outside of the adsorbent body may be further formed on the outside of the adsorbent body to increase the strength of the adsorbent body. The adsorbents 61 may be filled in the ventilation casing 62 to form adsorbent units, wherein the ventilation casing has ventilation holes through which flue gas may enter the ventilation casing 62, and the flue gas may pass through gaps between adjacent adsorbents and/or holes of the adsorbents themselves, thereby not only reducing direct collision, frictional wear, and dust generation between the adsorbents. The ventilation shell can be in the shape of a sphere, a cylinder and other rotating bodies, wherein the diameter of the adsorption unit can be 10mm-100mm, and the diameter of the adsorbent is 1mm-10mm.
When the adsorption layer 4 is formed by stacking adsorbent particles or adsorbent bodies in the embodiment of the invention, the pore diameter of the flue gas via holes 23 is smaller than the particle diameter of the adsorbent particles or adsorbent bodies, and when the adsorption layer 4 is formed by stacking adsorbent units, the pore diameter of the flue gas via holes 23 is smaller than the particle diameter of the adsorbent units.
As shown in fig. 3 and 4, in some embodiments, the number of the barrier members may be plural, and the plural barrier members are disposed in the tower 1 at intervals in the vertical direction.
Specifically, the number of barrier members may be two, three or five, and the number of barrier members may be determined according to the thickness of the adsorption layer 4 in the vertical direction and the height of the barrier members in the vertical direction.
In the embodiment of the invention, the plurality of interlayer components are arranged, so that a plurality of flue gas mixing spaces 21 can be formed in the adsorption layer 4, and further, the flue gas can be remixed for a plurality of times in the process of passing through the adsorption layer 4, so that the uniformity of the distribution of the flue gas in the adsorption layer 4 is further improved, the adsorption saturation of adsorbents in different areas is more consistent, the adsorption purification effect of the flue gas is further improved, and the adsorption capacity and adsorption capacity of the adsorbents are more fully utilized.
Further, among the plurality of barrier members, the adsorbent stacking thickness above the uppermost barrier member is 200mm to 400mm, and the adsorbent stacking thickness below the lowermost barrier member is 50mm to 150mm.
More specifically, the adsorbent located above the uppermost barrier member may prevent the gas flow at the flue gas outlet 12 from interfering with the flue gas flow in the adsorbent layer, and the adsorbent located below the lowermost barrier member may prevent the gas flow at the flue gas inlet 11 from interfering with the flue gas flow in the adsorbent layer 4. The adsorbent stack thickness above the uppermost barrier member may be 200mm, 240mm, 275mm, 320mm, 387mm or 400mm and the adsorbent stack thickness below the lowermost barrier member may be 50mm, 65mm, 79mm, 111mm, 138mm or 150mm.
By stacking the adsorbent with a certain thickness above the uppermost and below the lowermost barrier members, the flue gas in the flue gas mixing space 21 formed in the uppermost and lowermost barrier members can be uniformly distributed, and further the uniformity of distribution of the flue gas in the adsorption layer 4 between the uppermost and lowermost barrier members on the same horizontal plane and the stable flow of the air flow direction along the vertical direction or the direction adjacent to the vertical direction can be ensured.
The inventors have found that when the thickness of the adsorbent stack below the lowermost spacer member is less than 50mm, the flue gas flow at the flue gas inlet 11 tends to disturb the flue gas flow in the flue gas mixing space 21, which is detrimental to the thorough mixing of the flue gas in the flue gas mixing space 21.
When the thickness of the adsorbent stack below the lowest interlayer part is greater than 150mm, the thickness of the adsorbent stack below the interlayer part is too thick, so that the adsorbent layer with uneven airflow distribution is too large in proportion, and the overall thickness of the adsorption layer 4 is increased on the premise that the flue gas is fully adsorbed and purified, so that the size of the adsorption tower is increased.
In the embodiment of the invention, the positions of the lowest interlayer parts and the lowest interlayer parts in the adsorption layer 4 (namely, the thicknesses of the corresponding adsorbent layers) are limited, so that the interference of the air flow disturbance of the flue gas inlet and the flue gas outlet to the flue gas in the adsorbent layers is reduced, the low-temperature flue gas is promoted to be more uniformly distributed, the adsorption effect of the adsorbent is ensured, and the interference to the low-temperature flue gas is avoided.
As shown in fig. 5, in some embodiments, the barrier member includes a barrier 25 and a plurality of drop tubes 24, with the upper ends of the drop tubes 24 being connected to the barrier 25.
The inner cavity of the blanking pipe 24 forms an adsorbent flow passage 22, a plurality of blanking pipes 24 are arranged at intervals to form a flue gas mixing space 21, and flue gas through holes 23 are arranged on the partition plate 25 and/or on the side wall of the blanking pipe 24 so that flue gas in the flue gas mixing space 21 flows into the adsorbent layer 4 above the partition plate 25 through the flue gas through holes 23.
In the embodiment of the invention, the down pipe 24 is arranged to enable the adsorbent to flow downwards through the inner cavity of the down pipe 24, the partition 25 is arranged to prevent the adsorbent from flowing downwards from the outer side of the down pipe 24, so that a flue gas mixing space 21 between an adsorbent layer above the partition and an adsorbent layer below the down pipe can be formed between the partition 25 and the plurality of down pipes 24 more reliably, flue gas through holes 23 can be formed on the partition 25 and/or on the side wall of the down pipe 24, flue gas through holes 23 on the partition 25 can enable flue gas to directly enter the adsorbent layer above the flue gas mixing space 21, and flue gas through holes 23 on the side wall of the down pipe 24 can enable flue gas to enter the down pipe 24 first and then rise into the adsorbent layer above the partition 25.
Optionally, the cross section of the blanking pipe 24 is circular, oval or diamond, preferably oval or diamond, so that the flue gas passes through the flue gas through holes 23 on the side wall of the blanking pipe 24 and is uniformly distributed in the adsorbent in the inner cavity of the blanking pipe 24, and the difference between the flue gas concentration in the inner cavity of the blanking pipe 24 and the flue gas concentration in the flue gas mixing space 21 is reduced, so that the uniformity of the flue gas distribution in the adsorption layer 4 above the flue gas mixing space 21 can be further improved.
In some embodiments, as shown in fig. 6, the barrier member includes a plurality of drop tubes 24, the drop tubes 24 being inverted cone shaped hoppers.
The inner cavity of the down pipe 24 forms the adsorbent flow passage 22, the peripheral edges of the upper end of the down pipe 24 meet each other to prevent adsorbent from flowing into the flue gas mixing space 21 through between the peripheral edges of the upper end of the down pipe 24, the lower ends of the down pipe 24 are spaced apart from each other to form the flue gas mixing space 21, and flue gas through holes 23 are provided in the side wall of the down pipe 24 to allow flue gas in the flue gas mixing space 21 to flow into the down pipe 24 through the flue gas through holes 23 and into the adsorbent layer 4 above the barrier member through the inner cavity of the down pipe 24.
Specifically, in the embodiment of the present invention, by providing the inverted cone-shaped blanking hoppers, the outer peripheries of the upper ends of the blanking pipes 24 are connected to each other to prevent the adsorbent from flowing from the outside of the blanking pipes 24, the lower ends of the blanking pipes 24 are spaced apart from each other to form the flue gas mixing space 21, and the flue gas flows into the blanking pipes 24 through the flue gas through holes 23 on the side walls of the blanking pipes 24 and then rises into the adsorbent layer above the partition plate 25.
As shown in fig. 1-8, in some embodiments, the spoiler 3 includes a driver 33, and an extraction tube 31 and an air tube 32 that communicate with the flue gas mixing space 21. The driver 33 is arranged between the exhaust pipe 31 and the air supply pipe 32 and is used for driving the flue gas in the flue gas mixing space 21 to flow out of the exhaust pipe 31 and flow into the flue gas mixing space 21 from the air supply pipe 32 so as to forcedly mix the flue gas in the flue gas mixing space 21.
Optionally, the driver 33 is a fan, the fan may be disposed on a side wall outside the adsorption tower, the exhaust pipe 31 and the air supply pipe 32 are disposed at different positions of the flue gas mixing space 21, for example, the exhaust pipe 31 is disposed at a region with a relatively high flue gas concentration, the air supply pipe 32 is disposed at a region with a relatively low flue gas concentration, so as to adjust and balance the flue gas concentrations in different regions in the flue gas mixing space 21, or by disposing a plurality of air supply pipes 32, the air flows of the air supply pipes 32 can drive the flue gas in the flue gas mixing space 21 to flow in a spiral manner, so as to accelerate the flue gas mixing speed in the flue gas mixing space 21, and the exhaust pipe 31 may be disposed at a spiral center position or in a region with a dead angle of the air flow.
As shown in fig. 1-8, in some embodiments, the number of the air extracting pipes 31 and the air supplying pipes 32 may be multiple, at least part of the air extracting pipes 31 and/or at least part of the air supplying pipes 32 extend to the central part of the flue gas mixing space 21, and the positions of the air extracting holes and the air supplying holes of the air extracting pipes 31 and the air supplying pipes 32 are arranged to ensure that the flue gas in the flue gas mixing space 21 can be fully mixed, so that the flow of the flue gas in the flue gas mixing space 21 is enhanced.
Optionally, the cross section of the adsorption tower is rectangular, the cross section of the formed flue gas mixing space 21 is also rectangular, and air flow dead angles are easily formed at each end corner of the flue gas mixing space 21, so that the flue gas flow rate is low, therefore, the suction openings of the four suction pipes 31 are respectively arranged at the four end corners of the flue gas mixing space 21, the air inlets of the air pipes 32 are arranged in the middle of the flue gas mixing space 21, and the air inlets of the air pipes 32 can drive the air flow of the flue gas mixing space 21 to spirally flow, so that the flue gas mixing effect in the rectangular flue gas mixing space 21 is improved and more uniform.
The number of the air extraction pipes 31 and the air supply pipes 32 in the embodiment of the invention may be multiple, and the air flow mixing effect in the flue gas mixing space 21 may be further improved by pertinently setting the air extraction points of part of the air extraction pipes 31 and the air supply pipes 32 according to the flue gas flow characteristics in the flue gas mixing space 21.
In some embodiments, the spoiler 3 further comprises a plurality of baffles 34, the baffles 34 being spaced apart from each other and arranged in parallel within the flue gas mixing space 21.
As shown in fig. 7, the baffles 34 can guide the air flow, so that the flue gas flows along the gap between two adjacent baffles 34, and the forced disturbance of the driver 33 is matched, so that the flue gas mixing effect in the flue gas mixing space 21 is improved.
In some embodiments, the spoiler 3 further includes a plurality of baffles 34, the plurality of baffles 34 being divided into a plurality of groups, the plurality of baffles 34 in each group of baffles 34 being disposed in spaced relation to one another.
As shown in fig. 8, at least part of the baffle groups are arranged at the suction opening of the suction pipe 31 and/or the air supply opening of the air supply pipe 32 to guide the flow direction of the flue gas in the corresponding region in the corresponding flue gas mixing space 21. In the embodiment of the invention, the baffle 34 is arranged, so that the flue gas at the air extraction opening and the air supply opening can be guided, the directional flow of the flue gas in the local area range is promoted, and the air flow mixing effect is further improved.
In fig. 8, four groups of baffle plates 34 are shown to be respectively arranged at the air extraction openings of the air extraction pipes of the four turbulence members, so that larger turbulence is avoided in a local area during air extraction, the air flow efficiency in other areas is low, and meanwhile, the four groups of baffle plates 34 are positioned at the end corners of the tower body, so that air flow dead angles are avoided at the end corners, and the flue gas flow effect in the flue gas mixing space is improved.
Further, a plurality of baffles 34 in each set of baffles 34 may be spaced apart from and disposed in parallel with each other.
Alternatively, the plurality of baffles 34 in each set of baffles 34 are fan-shaped, that is, the plurality of baffles 34 are spaced apart from one another, but adjacent baffles 34 are spaced closer to the extraction port or plenum than to the extraction port or plenum to form a fan.
Alternatively, the lengths of the plurality of baffles 34 in each set of baffles 34 may be different, so as to better and specifically guide the airflow in a local area, and improve the airflow mixing effect in the whole flue gas mixing space 21. For example, in a set of baffles 34, the length of the baffles at the edge locations are relatively short and the length of the baffles at the center are relatively long, and longer baffles may be used to extend the flow of bleed or plenum air to a greater distance from the corresponding bleed or plenum.
As shown in fig. 1-8, in some embodiments, the exhaust pipe 31 and/or the air supply pipe 32 are provided with a cooling module 5, and the cooling module 5 is used to cool the flue gas flowing through the exhaust pipe 31 and/or the air supply pipe 32.
In the embodiment of the invention, the cooling module 5 is arranged to cool the flue gas in the exhaust pipe 31 and/or the air supply pipe 32, so that the low-temperature adsorption and purification effects of the adsorbent on the flue gas can be further improved.
Further, the flue gas passing through the air extraction pipe 31 and/or the air supply pipe 32 can be cooled below room temperature by the cooling module 5, preferably the flue gas passing through the air extraction pipe 31 and/or the air supply pipe 32 is cooled below zero, more preferably the flue gas passing through the air extraction pipe 31 and/or the air supply pipe 32 is cooled to-20 ℃ to-10 ℃.
Optionally, when a plurality of barrier members are arranged, the flue gas in the flue gas mixing space 21 corresponding to different barrier members may be cooled to different temperatures, and along the flow direction of the flue gas, the temperature of the flue gas in the flue gas mixing space 21 in the plurality of barrier members may be gradually reduced, for example, three barrier members are arranged in the adsorption tower, and along the flow direction of the flue gas, the temperatures of the flue gas in the three formed flue gas mixing spaces 21 are respectively 0-10 ℃, -10 ℃ -5 ℃, -20 ℃ -10 ℃.
The inventors found through researches that the lower the flue gas temperature is, the more favorable for adsorption purification, but the lower the flue gas temperature is, the complicated equipment structure for cooling the flue gas is caused, and the energy consumption is increased, for example, the cooling equipment, the adsorption tower and the pipeline are required to be provided with heat insulation layers, the sealing performance is required to be high, so that the cost is increased, and in addition, the condensed water is easy to appear in the adsorption tower under the condition of the too low temperature, so that the adsorption is influenced by the adhesion and blockage of the adsorbent. Therefore, it is advantageous to cool the flue gas temperature to-20℃to-10 ℃.
Alternatively, the cooling module 5 is a heat exchanger, for example the cooling module 5 employs a fin tube heat exchanger or a plate heat exchanger.
The low temperature flue gas adsorption system according to an embodiment of the present invention is described below. The low-temperature flue gas adsorption system of the embodiment of the invention comprises a cooling tower, an adsorption tower and a regeneration tower, wherein the cooling tower is used for cooling flue gas into low-temperature flue gas below room temperature, the adsorption tower is the low-temperature flue gas adsorption tower with the flue gas mixing function according to the embodiment, the low-temperature flue gas enters the adsorption tower from a flue gas inlet 11 and contacts with the adsorbent in the adsorption tower to be adsorbed and purified to be purified and discharged from a flue gas outlet 12, and the regeneration tower is connected with the adsorption tower and is used for regenerating the adsorbent which is discharged from the adsorption tower and is saturated in adsorption and sending the regenerated adsorbent back into the adsorption tower.
According to the low-temperature flue gas adsorption system provided by the embodiment of the invention, the flue gas is contacted with the adsorbent in a low-temperature environment, so that the adsorption effect of the adsorbent on pollutants in the flue gas is improved, and the adsorbent is regenerated through the regeneration tower, so that the adsorbent can be continuously and circularly utilized, the cost is reduced, and the efficiency is improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.
Claims (9)
1. A low temperature flue gas adsorption tower with flue gas mixing function, which is characterized by comprising:
the tower body is provided with a flue gas inlet and a flue gas outlet, flue gas below room temperature is input into the tower body through the flue gas inlet, and purified flue gas after adsorption is discharged from the flue gas outlet;
the adsorption layer is arranged in the tower body, the tower body is provided with an adsorbent feeding hole and an adsorbent discharging hole, the adsorption layer is formed by stacking adsorbents input through the adsorbent feeding hole in the tower body, and flue gas input into the tower body is adsorbed and purified into clean flue gas by the adsorption layer;
a barrier member disposed within the tower body to form a flue gas mixing space within the adsorbent layer, the barrier member having an adsorbent flow passage for the adsorbent to flow from above the flue gas mixing space through the flue gas mixing space to below the flue gas mixing space, and a plurality of flue gas vias, wherein flue gas entering the flue gas mixing space from below the flue gas mixing space flows directly into the adsorbent layer above the flue gas mixing space through the flue gas vias and/or into the adsorbent flow passage through the flue gas vias to flow through the adsorbent flow passage into the adsorbent layer above the flue gas mixing space;
the turbulence component is communicated with the flue gas mixing space and is used for agitating flue gas in the flue gas mixing space so as to uniformly mix the flue gas in the flue gas mixing space;
the spoiler comprises:
an exhaust pipe and an air supply pipe communicated with the flue gas mixing space;
the driver is arranged between the exhaust pipe and the air supply pipe and is used for driving the smoke in the smoke mixing space to flow out of the exhaust pipe and flow into the smoke mixing space from the air supply pipe so as to forcedly mix the smoke in the smoke mixing space.
2. The low temperature flue gas adsorption tower with flue gas mixing function according to claim 1, wherein the pore size of the flue gas via is smaller than the particle size of the adsorbent to prevent the adsorbent from entering the flue gas mixing space through the flue gas via.
3. The low-temperature flue gas adsorption tower with a flue gas mixing function according to claim 1, wherein the number of the partition members is plural, and the plural partition members are arranged in the tower body at intervals in the vertical direction.
4. A low temperature flue gas adsorption tower having a flue gas mixing function according to claim 3, wherein among the plurality of barrier members, the adsorbent stacking thickness above the uppermost barrier member is 200mm to 400mm, and the adsorbent stacking thickness below the lowermost barrier member is 50mm to 150mm.
5. The low temperature flue gas adsorption tower with flue gas mixing function according to any one of claims 1 to 4, wherein the partition member includes a partition plate and a plurality of blanking pipes, the upper ends of the blanking pipes are connected to the partition plate, the inner cavities of the blanking pipes form the adsorbent flow passages, the plurality of blanking pipes are arranged at intervals to form the flue gas mixing space, and the flue gas through holes are formed on the partition plate and/or on the side walls of the blanking pipes so that flue gas in the flue gas mixing space flows into the adsorption layer above the partition plate through the flue gas through holes.
6. The low temperature flue gas adsorption tower with flue gas mixing function according to any one of claims 1 to 4, wherein the barrier member includes a plurality of down pipes, the down pipes are inverted cone-shaped down hoppers, the inner cavities of the down pipes form the adsorbent flow passages, the peripheral edges of the upper ends of the down pipes meet each other to prevent the adsorbent from flowing into the flue gas mixing space between the peripheral edges of the upper ends of the down pipes, the lower ends of the down pipes are spaced apart from each other to form the flue gas mixing space, and the flue gas through holes are provided on the side walls of the down pipes to allow flue gas in the flue gas mixing space to flow into the down pipes through the flue gas through holes and into the adsorption layer above the barrier member through the inner cavities of the down pipes.
7. The flue gas adsorption tower with flue gas mixing function according to claim 1, wherein the number of the exhaust pipes and the air supply pipes is plural, at least part of the exhaust pipes and/or at least part of the air supply pipes extend to the central part of the flue gas mixing space, and/or
The turbulence member also comprises a plurality of baffles which are arranged in the flue gas mixing space at intervals and in parallel, and/or
The turbulence component further comprises a plurality of baffle plates, the baffle plates are divided into a plurality of groups, the baffle plates in each group of baffle plates are arranged at intervals, and at least part of baffle plate groups are arranged at the air extraction opening of the air extraction pipe and/or the air supply opening of the air supply pipe to guide the flow direction of the flue gas in the corresponding region in the flue gas mixing space.
8. The low-temperature flue gas adsorption tower with a flue gas mixing function according to claim 1, wherein a cooling module is arranged on the exhaust pipe and/or the air supply pipe and is used for cooling the flue gas flowing through the exhaust pipe and/or the air supply pipe.
9. A low temperature flue gas adsorption system, comprising:
the cooling tower is used for cooling the flue gas into low-temperature flue gas below room temperature;
an adsorption tower, which is a low-temperature flue gas adsorption tower with a flue gas mixing function according to any one of claims 1-8, wherein the low-temperature flue gas enters the adsorption tower from the flue gas inlet and contacts with an adsorbent in the adsorption tower to be adsorbed and purified to be purified flue gas and is discharged from the flue gas outlet;
and the regeneration tower is connected with the adsorption tower and is used for regenerating the adsorption saturated adsorbent discharged from the adsorption tower and sending the regenerated adsorbent back into the adsorption tower.
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| CN117282227A (en) | 2023-12-26 |
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