CN113828113A - Flue gas purification system - Google Patents
Flue gas purification system Download PDFInfo
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- CN113828113A CN113828113A CN202111081487.7A CN202111081487A CN113828113A CN 113828113 A CN113828113 A CN 113828113A CN 202111081487 A CN202111081487 A CN 202111081487A CN 113828113 A CN113828113 A CN 113828113A
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- 239000003546 flue gas Substances 0.000 title claims abstract description 150
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 147
- 238000000746 purification Methods 0.000 title claims abstract description 27
- 238000001179 sorption measurement Methods 0.000 claims abstract description 88
- 239000003463 adsorbent Substances 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 230000008929 regeneration Effects 0.000 claims description 42
- 238000011069 regeneration method Methods 0.000 claims description 42
- 238000012856 packing Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000571 coke Substances 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 16
- 239000003344 environmental pollutant Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- 238000003795 desorption Methods 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 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
- 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
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a flue gas purification system, which comprises a flue gas cooling device, wherein the flue gas cooling device is provided with a flue gas inlet and a flue gas outlet, and is used for cooling flue gas entering from the flue gas inlet to room temperature or below; the rotary adsorption tower is provided with a cavity, a feeding port, a discharging port, a smoke inlet and a smoke outlet which are communicated with the cavity are arranged on the rotary adsorption tower, the smoke outlet of the smoke cooling device is communicated with the smoke outlet, the cavity comprises a filler section filled with an adsorbent, and smoke entering the rotary adsorption tower from the smoke inlet flows through the filler section to be contacted with the adsorbent. The invention has the advantages of small occupied area, less transmission equipment, simple working principle and easy operation.
Description
Technical Field
The application relates to the technical field of flue gas treatment, in particular to a flue gas purification system.
Background
The generation of a large amount of pollutants from coal-fired flue gas is one of the important factors harming the atmospheric environment and human health. The fixed bed adsorption tower is usually adopted in the flue gas purification field to adsorb the purpose in order to realize purifying flue gas in the pollutant in the flue gas, but the fixed bed adsorption tower among the correlation technique ubiquitous filler layer pressure and density when using problem that absorption is inhomogeneous, adsorption effect is poor, adsorption efficiency reduces along with the live time extension, need stop work when needing to change the adsorbent in addition, seriously influences adsorption efficiency, has improved the operation degree of difficulty.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, embodiments of the present invention provide a gas purification system.
The flue gas purification system comprises a flue gas cooling device, wherein the flue gas cooling device is provided with a flue gas inlet and a flue gas outlet and is used for cooling the flue gas entering from the flue gas inlet to room temperature or below; the rotary adsorption tower is provided with a cavity, a feeding port, a discharging port, a flue gas inlet and a flue gas outlet which are communicated with the cavity are arranged on the rotary adsorption tower, a flue gas outlet of the flue gas cooling device is communicated with the flue gas outlet, the cavity comprises a filler section filled with an adsorbent, and flue gas entering the rotary adsorption tower from the flue gas inlet flows through the filler section to be contacted with the adsorbent so as to be convenient for desulfurization and denitration.
The flue gas purification system provided by the embodiment of the invention has the advantages of small floor area, less transmission equipment, simple working principle and easiness in operation.
In some embodiments, the packing section is divided into an adsorption zone and a regeneration zone in the circumferential direction of the rotary adsorption tower, the adsorbent in the packing section can rotate in the circumferential direction so as to sequentially enter and exit the adsorption zone and the regeneration zone, the adsorbent in the adsorption zone is used for adsorbing flue gas, and the adsorbent entering the regeneration zone is heated so as to perform desorption and regeneration.
In some embodiments, the packing section further includes a first buffer zone and a second buffer zone, the adsorption zone, the first buffer zone, the regeneration zone and the second buffer zone are sequentially arranged in the circumferential direction, and the first buffer zone and the second buffer zone are used for isolating the adsorption zone and the regeneration zone.
In some embodiments, the rotary adsorption tower comprises a heating line disposed in the regeneration zone for heating the adsorbent in the regeneration zone to desorb and regenerate it.
In some embodiments, the temperature of the regeneration zone is 300-.
In some embodiments, the rotary adsorption tower comprises a rotating shaft and a rotating disc, the rotating disc is located below the packing section and used for supporting the adsorbent, the rotating shaft is connected with the rotating disc, the rotating shaft rotates to drive the rotating disc to rotate, the rotating disc can drive the adsorbent to rotate, and the central axis of the rotating shaft coincides with the central axis of the packing section.
In some embodiments, the rotational speed of the rotating shaft is 60 ° -120 °/h.
In some embodiments, the flue gas inlet and the flue gas outlet are provided on a side wall of the rotary adsorption tower, and the flue gas inlet is located below the flue gas outlet.
In some embodiments, the adsorbent is one or both of activated carbon, activated coke, and molecular sieves.
Drawings
FIG. 1 is a schematic diagram of a flue gas cleaning system according to an embodiment of the invention.
FIG. 2 is a schematic diagram of a flue gas cleaning system according to another embodiment of the present invention.
FIG. 3 is a schematic front view of a rotary adsorption column according to an embodiment of the present invention.
FIG. 4 is a schematic top view of a rotary adsorption column according to an embodiment of the present invention.
Reference numerals:
a rotary adsorption tower 1; a feed inlet 11; a discharge port 12; a flue gas inlet 13; a flue gas outlet 14; a rotating shaft 15; a turntable 16;
a filler section 2; an adsorption zone 21; a regeneration zone 22; a first buffer 23; a second buffer 24;
a flue gas cooling device 3; a smoke inlet 31; a smoke outlet 32.
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 with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the flue gas purification system according to the embodiment of the present invention includes a flue gas cooling device 3 and a rotary adsorption tower 1.
The flue gas cooling device 3 is provided with a flue gas inlet 31 and a flue gas outlet 32, and the flue gas cooling device 3 is used for cooling the flue gas entering the rotary adsorption tower 1 from the flue gas inlet 31 to room temperature or below;
specifically, the flue gas flows into the flue gas cooling device 3 from the flue gas inlet 31, the flue gas flows out of the flue gas cooling device 3 from the flue gas outlet 32, when the flue gas flows through the flue gas cooling device 3, heat in the flue gas is absorbed by the flue gas cooling device 3, and the high-temperature flue gas is changed into low-temperature flue gas through the action of the flue gas cooling device 3.
Optionally, the flue gas at the outlet 32 has a temperature of-100 deg.C to room temperature (e.g., room temperature is 25 deg.C).
It should be noted that, the flue gas purification system provided by this embodiment adopts a low-temperature adsorption mode when adsorbing flue gas, and utilizes the dissolution characteristic and the adsorption characteristic of pollutant components in flue gas at low temperature to remove pollutants, so as to simultaneously realize desulfurization and denitrification. The sulfur dioxide in the flue gas is mainly subjected to physical adsorption, the desorption temperature is low, the loss of the adsorbent is low, the supplement amount of the adsorbent is low, and the operation cost is reduced. In addition, the flue gas purification system for adsorbing at low temperature has large pollutant adsorption capacity, small adsorbent filling amount and small occupied area of equipment such as an adsorption tower and the like.
In addition, when the flue gas purification system provided by the embodiment is used for adsorbing and purifying flue gas, NO which is difficult to remove in flue gasxThe component is oxidized into NO by a low-temperature oxidation adsorption mechanism2Adsorption removal without spraying NH3The catalytic reduction is carried out, and the operation cost is low. The flue gas purification system provided by the embodiment can be used for purifying NO in flue gasxThe adsorption ratio is more than 99%, and the denitration efficiency is obviously superior to 70-80% in the prior art.
The rotary adsorption tower 1 is provided with a cavity, a feed inlet 11, a discharge outlet, a flue gas inlet 13 and a flue gas outlet 14 which are communicated with the cavity are arranged on the rotary adsorption tower 1, a flue gas outlet 32 of the flue gas cooling device 3 is communicated with the flue gas outlet 14, the cavity comprises a filler section 2 filled with an adsorbent, and flue gas entering the rotary adsorption tower 1 from the flue gas inlet 13 flows through the filler section 2 to be contacted with the adsorbent so as to be desulfurized and denitrated.
Specifically, the rotary adsorption tower 1 is cylindrical with a conical funnel at the lower end, a feed inlet 11 and a discharge outlet are arranged at the top of the rotary adsorption tower 1, and a flue gas inlet 13 and a flue gas outlet 14 are arranged at the left end of the rotary adsorption tower 1. The feed inlet 11 is arranged on the left side of the top of the rotary adsorption tower 1, and the discharge outlet is arranged on the right side of the top of the rotary adsorption tower 1. The flue gas inlet 13 is arranged at the lower side of the left end of the rotary adsorption tower 1, and the flue gas outlet 14 is arranged at the upper side of the left end of the rotary adsorption tower 1. Therefore, the flue gas flows upwards after entering the packing section 2 through the flue gas inlet 13, fully contacts with the adsorbent particles in the packing section 2 and then flows out through the flue gas outlet 14.
In some embodiments, the packing section 2 is divided into an adsorption zone 21 and a regeneration zone 22 in the circumferential direction of the rotary adsorption tower 1, the adsorbent in the packing section 2 can rotate in the circumferential direction so as to sequentially enter and exit the adsorption zone 21 and the regeneration zone 22, the adsorbent in the adsorption zone 21 is used for adsorbing flue gas, and the adsorbent entering the regeneration zone 22 is heated so as to be desorbed and regenerated.
Specifically, the adsorption zone 21 is disposed on the lower side of the feed port 11, and the regeneration zone 22 is disposed on the lower side of the discharge port. Therefore, the proportion of the adsorbent particles which do not react with the flue gas in the adsorbent particles in the adsorption area 21 is reduced, and the flue gas can contact with more adsorbent particles which do not react with the flue gas after entering the filling section 2 through the flue gas inlet 13, so that the adsorption efficiency is improved.
In some embodiments, the packing section 2 further includes a first buffer zone 23 and a second buffer zone 24, the adsorption zone 21, the first buffer zone 23, the regeneration zone 22 and the second buffer zone 24 are sequentially arranged in the circumferential direction, and the first buffer zone 23 and the second buffer zone 24 are used for isolating the adsorption zone 21 and the regeneration zone 22.
Specifically, as shown in fig. 4, in a plan view, the adsorption area 21, the first buffer area 23, the regeneration area 22, and the second buffer area 24 are arranged along a counterclockwise circumference, and the first buffer area 23 and the second buffer area 24 are located between the adsorption area 21 and the regeneration area 22, where the first buffer area 23 is located at a front side of the cavity and the second buffer area 24 is located at a rear side of the cavity. Thus, after entering the adsorption zone 21 through the flue gas inlet 13, the low temperature flue gas reacts with the adsorbent particles in the adsorption zone 21, and as the adsorbent particles rotate in the cavity in the direction shown in fig. 4, the temperature of the adsorbent particles decreases after the low temperature flue gas is in full contact with the adsorbent. The low-temperature adsorbent particles enter the regeneration zone 22 through the first buffer for heating desorption regeneration, and the adsorbent particles with higher temperature rotate along the direction shown in fig. 4, and enter the adsorption zone 21 through the second buffer zone 24 for adsorption. Thus, the first buffer zone 23 and the second buffer zone 24 serve to isolate the temperature between the adsorption zone 21 and the regeneration zone 22, corresponding to the insulation between the adsorption zone 21 and the regeneration zone 22.
In some embodiments, the rotary adsorption tower 1 comprises a heating line 25, the heating line 25 is disposed in the regeneration zone 22, and the heating line 25 is used for heating the adsorbent in the regeneration zone 22 to desorb and regenerate the adsorbent.
Specifically, the heating pipeline 25 is a hollow pipeline, and high-temperature steam can be introduced into the heating pipeline 25 to heat the adsorbent in the regeneration region 22, so that the adsorbent particles adsorbing the flue gas enter the regeneration region 22 for heating, desorption and regeneration.
In other embodiments, as shown in fig. 2, one end of the heating pipeline is introduced with high temperature flue gas, and the other end is connected with the flue gas inlet 31. Therefore, the heat of the high-temperature flue gas is utilized to heat the adsorbent in the regeneration area 22, so that the heat of the high-temperature flue gas can be utilized before the high-temperature flue gas enters the flue gas cooling device 3, the heat of the flue gas can be recycled, and the power consumption of the flue gas cooling device 3 is reduced.
In some embodiments, it is characterized by a regeneration zone 22 temperature of 300-.
Preferably, the temperature of regeneration zone 22 is 300 ℃ to 350 ℃, which is configured to allow more thorough regeneration of the adsorbent.
In some embodiments, the rotary adsorption tower 1 includes a rotating shaft and a rotating disc 16, the rotating disc 16 is located below the packing section 2 for supporting the adsorbent, the rotating shaft is connected to the rotating disc 16, the rotating shaft rotates to drive the rotating disc 16 to rotate, the rotating disc 16 can drive the adsorbent to rotate, and the central axis of the rotating shaft coincides with the central axis of the packing section 2.
Specifically, the upper end of the rotating shaft 15 extends out of the cavity, the lower end of the rotating shaft 15 is connected with the rotating disc 16, the rotating disc 16 is a concentric circle, and the width of a gap between the outer side of the rotating disc 16 and the inner wall of the cavity is smaller than the average diameter of the adsorbent particles. Therefore, when the turntable 16 rotates, only a small amount of adsorbent particles fall from the gap between the outer side of the turntable 16 and the inner wall of the cavity, so that the recovery rate of the adsorbent particles is improved, and the waste of the adsorbent particles is reduced.
In some embodiments, the rotational speed of the shaft 15 is 60 ° -120 °/h.
Preferably, the rotating speed of the rotating shaft 15 is 120 degrees/h, so that the adsorbent absorption time and the regeneration time are set to be just matched with the adsorbent absorption and regeneration performance, and higher absorption saturation and regeneration resolution can be achieved.
In some embodiments, the flue gas inlet 13 and the flue gas outlet 14 are arranged on the side wall of the rotary adsorption tower 1, and the flue gas inlet 13 is located below the flue gas outlet 14.
Specifically, the rotary adsorption tower 1 is hollow and cylindrical, the feed inlet 11 and the discharge outlet are located on two sides of the center of the top circle of the rotary adsorption tower 1, and the flue gas inlet 13 and the flue gas outlet 14 are located on the circumference of the side wall of the rotary adsorption tower 1 at the position closest to the feed inlet 11, so that the flue gas inlet 13 and the flue gas outlet 14 are located at the position farthest from the discharge outlet. Thereby, the influence of the desorbed flue gas at the discharge port on the flue gas at the flue gas outlet 14 is reduced to the maximum extent.
In some embodiments, the adsorbent is one or both of activated carbon, activated coke, and molecular sieves.
Specifically, the adsorbent is in a granular shape with uniform particle size, and the particle size of the adsorbent is 6-8 meshes, so that the contact area of the flue gas and the adsorbent is increased, and the adsorbent has better fluidity.
The flue gas purification system that this embodiment provided adopts the low temperature adsorption's mode when adsorbing the flue gas, utilizes the dissolution characteristic and the adsorption characteristic of pollutant component at low temperature in the flue gas to carry out deviating from of pollutant, can realize SOx/NOx control simultaneously. The sulfur dioxide in the flue gas is mainly subjected to physical adsorption, the desorption temperature is low, the loss of the adsorbent is low, the supplement amount of the adsorbent is low, and the operation cost is reduced. In addition, the flue gas purification system for adsorbing at low temperature has large pollutant adsorption capacity, small adsorbent filling amount and small occupied area of equipment such as an adsorption tower and the like.
It should be noted that, when the flue gas purification system provided by this embodiment performs adsorption purification on flue gas, it is difficult to purify flue gasThe removed NO component is oxidized into NO by a low-temperature oxidation adsorption mechanism2Adsorption removal without spraying NH3The catalytic reduction is carried out, and the operation cost is low. The flue gas purification system provided by the embodiment can be used for purifying NO in flue gasxThe adsorption ratio is more than 99%, and the denitration efficiency is obviously superior to 70-80% in the prior art.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A flue gas purification system, comprising:
the flue gas cooling device is provided with a flue gas inlet and a flue gas outlet and is used for cooling the flue gas entering from the flue gas inlet to room temperature or below;
the rotary adsorption tower is provided with a cavity, a feeding port, a discharging port, a flue gas inlet and a flue gas outlet which are communicated with the cavity are arranged on the rotary adsorption tower, a flue gas outlet of the flue gas cooling device is communicated with the flue gas outlet, the cavity comprises a filler section filled with an adsorbent, and flue gas entering the rotary adsorption tower from the flue gas inlet flows through the filler section to be contacted with the adsorbent so as to be convenient for desulfurization and denitration.
2. The flue gas purification system according to claim 1, wherein the packing section is divided into an adsorption zone and a regeneration zone in the circumferential direction of the rotary adsorption tower, the adsorbent in the packing section can rotate in the circumferential direction so as to sequentially enter and exit the adsorption zone and the regeneration zone, the adsorbent in the adsorption zone is used for adsorbing the flue gas, and the adsorbent entering the regeneration zone is heated so as to be desorbed and regenerated.
3. The flue gas purification system according to claim 2, wherein the packing section further comprises a first buffer zone and a second buffer zone, the adsorption zone, the first buffer zone, the regeneration zone and the second buffer zone are sequentially arranged in the circumferential direction, and the first buffer zone and the second buffer zone are used for isolating the adsorption zone from the regeneration zone.
4. The flue gas purification system according to claim 2, wherein the rotary adsorption tower comprises a heating pipeline, the heating pipeline is arranged in the regeneration zone, and the heating pipeline is used for heating the adsorbent in the regeneration zone to desorb and regenerate the adsorbent.
5. The flue gas purification system according to any one of claims 2-5, wherein the temperature of the regeneration zone is 300-350 ℃.
6. The flue gas purification system according to any one of claims 1 to 5, wherein the rotary adsorption tower comprises a rotary shaft and a rotary disc, the rotary disc is located below the packing section and used for supporting the adsorbent, the rotary shaft is connected with the rotary disc, the rotary shaft rotates to drive the rotary disc to rotate, the rotary disc can drive the adsorbent to rotate, and the central axis of the rotary shaft coincides with the central axis of the packing section.
7. The flue gas purification system according to claim 7, wherein the rotating shaft has a rotational speed of 60 ° -120 °/h.
8. The flue gas purification system of claim 1, wherein the flue gas inlet and the flue gas outlet are disposed on a sidewall of the rotary adsorption tower, and the flue gas inlet is located below the flue gas outlet.
9. The flue gas purification system according to any one of claims 1-5, wherein the adsorbent is one or two of activated carbon, activated coke, and molecular sieves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/078047 WO2023029408A1 (en) | 2021-09-02 | 2022-02-25 | Flue gas purification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2021110285089 | 2021-09-02 | ||
| CN202111028508 | 2021-09-02 |
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| CN113828113A true CN113828113A (en) | 2021-12-24 |
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| WO (1) | WO2023029408A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029408A1 (en) * | 2021-09-02 | 2023-03-09 | 中国华能集团有限公司 | Flue gas purification system |
| CN117085458A (en) * | 2023-10-20 | 2023-11-21 | 中国华能集团清洁能源技术研究院有限公司 | Combined purifying tower for flue gas cooling and adsorption |
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| WO2023029408A1 (en) * | 2021-09-02 | 2023-03-09 | 中国华能集团有限公司 | Flue gas purification system |
| CN117085458A (en) * | 2023-10-20 | 2023-11-21 | 中国华能集团清洁能源技术研究院有限公司 | Combined purifying tower for flue gas cooling and adsorption |
| CN117085458B (en) * | 2023-10-20 | 2024-02-13 | 中国华能集团清洁能源技术研究院有限公司 | Combined purifying tower for flue gas cooling and adsorption |
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| WO2023029408A1 (en) | 2023-03-09 |
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