CN220194433U - Dry desulfurizing device - Google Patents
Dry desulfurizing device Download PDFInfo
- Publication number
- CN220194433U CN220194433U CN202321752493.5U CN202321752493U CN220194433U CN 220194433 U CN220194433 U CN 220194433U CN 202321752493 U CN202321752493 U CN 202321752493U CN 220194433 U CN220194433 U CN 220194433U
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- China
- Prior art keywords
- nitrogen
- tower
- desulfurization
- outlet
- pipeline
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- 230000003009 desulfurizing effect Effects 0.000 title claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 126
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 63
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 48
- 230000023556 desulfurization Effects 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 21
- 239000000498 cooling water Substances 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 36
- 239000003546 flue gas Substances 0.000 abstract description 36
- 239000003463 adsorbent Substances 0.000 abstract description 13
- 239000002918 waste heat Substances 0.000 abstract description 6
- 230000008929 regeneration Effects 0.000 abstract description 5
- 238000011069 regeneration method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model provides a dry desulfurization device which comprises a cooling tower, a first desulfurization tower, a second desulfurization tower, a heat exchanger and a nitrogen storage tank, wherein the first desulfurization tower is connected with the heat exchanger; the inside of the cooling tower is provided with a particle coarse filter layer, a particle fine filter layer and a drying layer from bottom to top. Has the following advantages: two desulfurization devices are arranged, when one desulfurization device is in a working state, the other desulfurization device is in an adsorbent regeneration state, so that continuous desulfurization treatment of flue gas is realized, and the flue gas desulfurization efficiency is improved. Effectively utilizes the waste heat of the flue gas and reduces the energy consumption.
Description
Technical Field
The utility model belongs to the technical field of flue gas purification treatment, and particularly relates to a dry desulfurization device.
Background
The flue gas generated by the boiler of the thermal power plant contains CS 2 、H 2 S and other sulfur-containing compounds often have concentrations exceeding current emission standards, so that flue gas needs to be subjected to desulfurization and purification treatment, and then is discharged after reaching the emission standards. When the existing flue gas desulfurization purification equipment adopts a desulfurizing tower to carry out desulfurization, when the adsorbent in the desulfurizing tower is deactivated, the equipment is stopped and the adsorbent is replaced, and then desulfurization can be carried out continuously, so that the desulfurization efficiency is reduced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides a dry desulfurization device which can effectively solve the problems.
The technical scheme adopted by the utility model is as follows:
the utility model provides a dry desulfurization device which comprises a cooling tower (1), a first desulfurization tower (2), a second desulfurization tower (3), a heat exchanger (4) and a nitrogen storage tank (5);
the tower wall of the cooling tower (1) is of a flow channel structure; a cooling water inlet (1.1) is arranged above the flow channel structure, and a cooling water outlet (1.2) is arranged below the flow channel structure; the inside of the cooling tower (1) is provided with a particle coarse filter layer (1.3), a particle fine filter layer (1.4) and a drying layer (1.5) from bottom to top respectively; the lower part of the cooling tower (1) is provided with a gas inlet, and the upper part is provided with a gas outlet;
the gas outlet of the cooling tower (1) is communicated with the bottom gas inlet end of the first desulfurizing tower (2) through a first gas pipe (L1), and is communicated with the bottom gas inlet end of the second desulfurizing tower (3) through a second gas pipe (L2); wherein, the first air pipe (L1) is provided with a first valve (F1), and the second air pipe (L2) is provided with a second valve (F2);
a cooling water outlet (1.2) of the cooling tower (1) is connected to a heat medium inlet of the heat exchanger (4) through a first water pipeline (L3), and a heat medium outlet of the heat exchanger (4) is connected to the cooling water inlet (1.1) of the cooling tower (1) through a second water pipeline (L4);
the first nitrogen outlet of the nitrogen storage tank (5) is connected to the cold medium inlet of the heat exchanger (4) through a first nitrogen pipeline (L5); the cold medium outlet of the heat exchanger (4) is connected to the nitrogen inlet of the nitrogen storage tank (5) through a second nitrogen pipeline (L6); the second nitrogen outlet of the nitrogen storage tank (5) is communicated with the inside of the first desulfurization tower (2) through a third nitrogen pipeline (L7); the second nitrogen outlet of the nitrogen storage tank (5) is communicated with the inside of the second desulfurizing tower (3) through a fourth nitrogen pipeline (L8); wherein the third nitrogen pipeline (L7) is provided with a third valve (F3); the fourth nitrogen pipeline (L8) is provided with a fourth valve (F4).
Preferably, the first water pipe (L3) is provided with a first water pump (N1); the second water conveying pipeline (L4) is provided with a second water pump (N2).
Preferably, a steam heater (6) is arranged at the second nitrogen outlet of the nitrogen storage tank (5).
The dry desulfurization device provided by the utility model has the following advantages:
two desulfurization devices are arranged, when one desulfurization device is in a working state, the other desulfurization device is in an adsorbent regeneration state, so that continuous desulfurization treatment of flue gas is realized, and the flue gas desulfurization efficiency is improved. Effectively utilizes the waste heat of the flue gas and reduces the energy consumption.
Drawings
Fig. 1 is a schematic structural diagram of a dry desulfurization device provided by the utility model.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, the dry desulfurization device provided by the utility model comprises a cooling tower 1, a first desulfurization tower 2, a second desulfurization tower 3, a heat exchanger 4 and a nitrogen storage tank 5;
the tower wall of the cooling tower 1 is of a runner structure; a cooling water inlet 1.1 is arranged above the flow channel structure, and a cooling water outlet 1.2 is arranged below the flow channel structure; the inside of the cooling tower 1 is provided with a coarse particle filter layer 1.3, a fine particle filter layer 1.4 and a drying layer 1.5 from bottom to top; the lower part of the cooling tower 1 is provided with a gas inlet, and the upper part is provided with a gas outlet;
the gas outlet of the cooling tower 1 is communicated with the bottom gas inlet end of the first desulfurizing tower 2 through a first gas pipe L1 and is communicated with the bottom gas inlet end of the second desulfurizing tower 3 through a second gas pipe L2; the first air pipe L1 is provided with a first valve F1, and the second air pipe L2 is provided with a second valve F2;
the cooling water outlet 1.2 of the cooling tower 1 is connected to the heat medium inlet of the heat exchanger 4 through a first water pipeline L3, and the heat medium outlet of the heat exchanger 4 is connected to the cooling water inlet 1.1 of the cooling tower 1 through a second water pipeline L4; the first water pipe L3 is provided with a first water pump N1; the second water pipe L4 is provided with a second water pump N2.
The first nitrogen outlet of the nitrogen storage tank 5 is connected to the cold medium inlet of the heat exchanger 4 through a first nitrogen pipeline L5; the cold medium outlet of the heat exchanger 4 is connected to the nitrogen inlet of the nitrogen storage tank 5 through a second nitrogen pipeline L6; the second nitrogen outlet of the nitrogen storage tank 5 is communicated to the inside of the first desulfurizing tower 2 through a third nitrogen pipeline L7; the second nitrogen outlet of the nitrogen storage tank 5 is communicated to the inside of the second desulfurizing tower 3 through a fourth nitrogen pipeline L8; wherein the third nitrogen pipeline L7 is provided with a third valve F3; the fourth nitrogen line L8 is fitted with a fourth valve F4. A second nitrogen outlet of the nitrogen tank 5 is fitted with a steam heater 6.
The utility model provides a dry desulfurization device, which has the following working principle:
(1) The temperature of the high-temperature flue gas to be treated is higher than 140 ℃, and the flue gas often contains a large amount of particles such as dust and water vapor, so that the flue gas enters the cooling tower 1, on one hand, the flue gas is cooled by circulating cooling water in a flow passage of the cooling tower 1; on the other hand, the flue gas is purified through a particle coarse filter layer 1.3, a particle fine filter layer 1.4 and a drying layer 1.5 in the cooling tower 1, particles such as dust in the flue gas are filtered through the particle coarse filter layer 1.3 and the particle fine filter layer 1.4, and moisture in the flue gas is adsorbed through the drying layer 1.5, so that the flue gas which is cooled and primarily purified is obtained;
in this step, the innovative three layers are set up in cooling tower 1, are granule coarse filter layer 1.3, granule fine filter layer 1.4 and dry layer 1.5 respectively, and the advantage is:
1. the dry flue gas is obtained after particles such as dust and water in the flue gas are filtered, so that the subsequent desulfurization adsorption efficiency can be improved;
2. the particle coarse filter layer 1.3, the particle fine filter layer 1.4 and the drying layer 1.5 are arranged in the cooling tower 1, so that the flow rate of smoke can be reduced, the heat exchange efficiency of the smoke and cooling water is improved, and further the smoke waste heat is effectively utilized.
(2) The flue gas subjected to the temperature reduction and preliminary purification selectively enters one desulfurizing tower, and the other desulfurizing tower is subjected to adsorbent regeneration operation;
for example, the first valve F1 is turned on, the second valve F2 is cut off, and then the flue gas enters the first desulfurization tower 2, and sulfide in the flue gas is adsorbed by the adsorbent in the first desulfurization tower 2, so that the desulfurized flue gas is obtained and discharged or enters other processes;
at this time, the adsorbent of the second desulfurizing tower 3 is saturated by adsorption, the fourth valve F4 is opened, the nitrogen in the nitrogen storage tank 5 is further heated to high-temperature nitrogen through the steam heater 6, and then the adsorbent of the second desulfurizing tower 3 is subjected to analysis and reactivation operation to regenerate the adsorbent of the second desulfurizing tower 3;
then, when the adsorbent in the first desulfurizing tower 2 is saturated, only the valve needs to be switched and controlled, namely: cutting off the first valve F1, conducting the second valve F2, conducting the third valve F3 and cutting off the fourth valve F4, wherein the flue gas enters the second desulfurizing tower 3 for desulfurizing operation, and meanwhile, the first desulfurizing tower 2 carries out adsorbent regenerating operation through high-temperature nitrogen.
So continuously circulate, can realize the continuous desulfurization operation of the flue gas, raise the desulfurization efficiency of the flue gas.
(3) In the above step, because the flue gas entering the cooling tower 1 is high-temperature flue gas, and contains a large amount of heat, the application also designs a flue gas waste heat utilization part at the same time, and the method is as follows:
the cooling water flowing through the cooling tower 1 exchanges heat with the flue gas to absorb the heat of the flue gas so as to obtain high-temperature water; the high-temperature water exchanges heat with the nitrogen in the nitrogen storage tank 5 through the heat exchanger 4, so that the temperature of the nitrogen in the nitrogen storage tank 5 is increased, and the high-temperature nitrogen meeting the requirement of adsorbent regeneration is obtained only by heating the nitrogen by the steam heater 6 later. The water exchanged by the heat exchanger 4 is cooled and then returned to the cooling tower 1 to be used as circulating cooling water.
Therefore, by utilizing the waste heat of the flue gas, the energy consumption for heating the nitrogen is reduced.
The dry desulfurization device provided by the utility model has the following advantages:
two desulfurization devices are arranged, when one desulfurization device is in a working state, the other desulfurization device is in an adsorbent regeneration state, so that continuous desulfurization treatment of flue gas is realized, and the flue gas desulfurization efficiency is improved. Effectively utilizes the waste heat of the flue gas and reduces the energy consumption.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which is also intended to be covered by the present utility model.
Claims (3)
1. The dry desulfurization device is characterized by comprising a cooling tower (1), a first desulfurization tower (2), a second desulfurization tower (3), a heat exchanger (4) and a nitrogen storage tank (5);
the tower wall of the cooling tower (1) is of a flow channel structure; a cooling water inlet (1.1) is arranged above the flow channel structure, and a cooling water outlet (1.2) is arranged below the flow channel structure; the inside of the cooling tower (1) is provided with a particle coarse filter layer (1.3), a particle fine filter layer (1.4) and a drying layer (1.5) from bottom to top respectively; the lower part of the cooling tower (1) is provided with a gas inlet, and the upper part is provided with a gas outlet;
the gas outlet of the cooling tower (1) is communicated with the bottom gas inlet end of the first desulfurizing tower (2) through a first gas pipe (L1), and is communicated with the bottom gas inlet end of the second desulfurizing tower (3) through a second gas pipe (L2); wherein, the first air pipe (L1) is provided with a first valve (F1), and the second air pipe (L2) is provided with a second valve (F2);
a cooling water outlet (1.2) of the cooling tower (1) is connected to a heat medium inlet of the heat exchanger (4) through a first water pipeline (L3), and a heat medium outlet of the heat exchanger (4) is connected to the cooling water inlet (1.1) of the cooling tower (1) through a second water pipeline (L4);
the first nitrogen outlet of the nitrogen storage tank (5) is connected to the cold medium inlet of the heat exchanger (4) through a first nitrogen pipeline (L5); the cold medium outlet of the heat exchanger (4) is connected to the nitrogen inlet of the nitrogen storage tank (5) through a second nitrogen pipeline (L6); the second nitrogen outlet of the nitrogen storage tank (5) is communicated with the inside of the first desulfurization tower (2) through a third nitrogen pipeline (L7); the second nitrogen outlet of the nitrogen storage tank (5) is communicated with the inside of the second desulfurizing tower (3) through a fourth nitrogen pipeline (L8); wherein the third nitrogen pipeline (L7) is provided with a third valve (F3); the fourth nitrogen pipeline (L8) is provided with a fourth valve (F4).
2. Dry desulfurization device according to claim 1, characterized in that the first water conduit (L3) is equipped with a first water pump (N1); the second water conveying pipeline (L4) is provided with a second water pump (N2).
3. Dry desulfurization unit according to claim 1, characterized in that the second nitrogen outlet of the nitrogen tank (5) is fitted with a steam heater (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321752493.5U CN220194433U (en) | 2023-07-05 | 2023-07-05 | Dry desulfurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321752493.5U CN220194433U (en) | 2023-07-05 | 2023-07-05 | Dry desulfurizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220194433U true CN220194433U (en) | 2023-12-19 |
Family
ID=89141135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321752493.5U Active CN220194433U (en) | 2023-07-05 | 2023-07-05 | Dry desulfurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220194433U (en) |
-
2023
- 2023-07-05 CN CN202321752493.5U patent/CN220194433U/en active Active
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