CN210356587U - Low-concentration sulfur dioxide gas sodium citrate desulfurization equipment - Google Patents
Low-concentration sulfur dioxide gas sodium citrate desulfurization equipment Download PDFInfo
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- CN210356587U CN210356587U CN201920896036.0U CN201920896036U CN210356587U CN 210356587 U CN210356587 U CN 210356587U CN 201920896036 U CN201920896036 U CN 201920896036U CN 210356587 U CN210356587 U CN 210356587U
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- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 33
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 title claims abstract description 20
- 239000001509 sodium citrate Substances 0.000 title claims abstract description 20
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 14
- 230000023556 desulfurization Effects 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 104
- 238000003795 desorption Methods 0.000 claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 18
- 230000007613 environmental effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a low-concentration sulfur dioxide gas sodium citrate desulfurization device, which comprises a pregnant solution storage tank, a high-efficiency gas-liquid mixing absorption device, a lean/pregnant solution heat exchanger, a barren solution storage tank and a desorption tower; a rich liquid inlet is formed in the top of the rich liquid storage tank; a high-efficiency gas-liquid mixing absorption device is arranged on the rich liquid inlet; the top of the high-efficiency gas-liquid mixing absorption device is provided with SO2A gas inlet and a heating barren liquor inlet; a rich liquid outlet is arranged at the lower part of the rich liquid storage tank; the rich liquid outlet is connected with the lean/rich liquid heat exchanger; the lean/rich liquid heat exchanger is connected with the desorption tower; the top of the desorption tower is provided with a gas outlet; the lower part of the desorption tower is provided with a liquid outlet; the liquid outlet is connected with the barren liquor storage tank; the top of the barren liquor storage tank is provided withA tail gas outlet; the lower part of the barren liquor storage tank is provided with a desorption barren liquor outlet; the desorption barren liquor outlet is connected with the barren/rich liquor heat exchanger; the lean/rich liquor heat exchanger is connected with the heating lean liquor inlet. The utility model discloses guarantee that absorptivity and desorption rate reach the requirement.
Description
Technical Field
The invention relates to SO2The technical field of waste gas treatment, in particular to sodium citrate desulfurization equipment with low concentration and large gas volume.
Background
The low concentration means that the concentration of SO2 is less than 1%, the gas quantity is large, the cost is high by adopting the traditional absorption tower, and the investment of equipment can be effectively reduced by adopting the high-efficiency absorption device. High efficiency, environmental protection, easy operation and the like.
In the combustion process of coal, petroleum and the like, SO2 flue gas is generated and is a main part of environmental management. The technology for treating the SO2 with high cost performance, high air quantity and low concentration has practical significance.
By utilizing the physical characteristics of the sodium citrate and adopting the sodium citrate desulfurization technology, the advantages of environmental protection, flexible operation and recyclable absorbent can be met, and the increasingly strict environmental protection desulfurization requirements are met.
Disclosure of Invention
The invention aims to provide a low-concentration sulfur dioxide gas sodium citrate desulfurization device, which ensures that the absorption rate and the desorption rate meet the requirements and simultaneously ensures that sodium citrate desulfurization process equipment is maintained in a stable and efficient running state.
In order to solve the technical problems, the invention adopts the following technical scheme: a low-concentration sulfur dioxide gas sodium citrate desulfurization device comprises a pregnant solution storage tank, a high-efficiency gas-liquid mixing absorption device, a lean/pregnant solution heat exchanger, a barren solution storage tank and a desorption tower; the rich liquid storage tank is a horizontal tank body; a rich liquid inlet is formed in the top of the rich liquid storage tank; a high-efficiency gas-liquid mixing absorption device is arranged on the rich liquid inlet; the bottom of the high-efficiency gas-liquid mixing absorption device is communicated with the rich liquid inlet; one side of the top of the high-efficiency gas-liquid mixing and absorbing device is provided with SO2A gas inlet; the top of the high-efficiency gas-liquid mixing absorption device is provided with a heating barren solution inlet; a rich liquid outlet is formed in the lower part of the rich liquid storage tank; the rich liquid outlet is connected with a heating medium inlet of the lean/rich liquid heat exchanger through a sodium citrate absorption liquid delivery pump; a heating medium outlet of the lean/rich liquid heat exchanger is connected with the desorption tower; a gas outlet is formed in the top of the desorption tower; a liquid outlet is arranged at the lower part of the desorption tower; the liquid outlet is connected with the barren liquor storage tank; the top of the barren liquor storage tank is also provided with a tail gas outlet; the lower part of the barren liquor storage tank is also provided with a desorption barren liquor outlet; the desorption lean solution outlet is connected with a refrigerant inlet of the lean/rich solution heat exchanger through a desorption lean solution delivery pump; the refrigerant outlet of the lean/rich liquid heat exchanger is connected with the heating lean solution inlet at the top of the efficient gas-liquid mixing absorption device through a pipeline。
Further, a gas-liquid separator is connected to an exhaust port of the rich liquid storage tank; the gas-liquid separator discharges gas through a drain hole at the top.
Further, a spraying device is arranged at the top of the high-efficiency gas-liquid mixing absorption device; the spraying device is connected with a heat medium outlet of the lean/rich liquid heat exchanger through a pipeline.
The invention has the beneficial effects that: the invention ensures that the absorption rate and the desorption rate meet the requirements, and simultaneously ensures that the sodium citrate desulfurization process equipment is maintained in a stable and efficient operation state.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described by the following detailed description.
As shown in fig. 1, the low-concentration sulfur dioxide gas sodium citrate desulfurization device of the present invention comprises a rich solution storage tank 1, a high-efficiency gas-liquid mixing absorption device 2, a lean/rich solution heat exchanger 3, a lean solution storage tank 4 and a desorption tower 5; the rich liquid storage tank 1 is a horizontal tank body; a rich liquid inlet is formed in the top of the rich liquid storage tank 1; the rich solution inlet is provided with a high-efficiency gas-liquid mixing absorption device 2; the bottom of the high-efficiency gas-liquid mixing absorption device 2 is communicated with the rich liquid inlet; one side of the top of the high-efficiency gas-liquid mixing absorption device 2 is provided with SO2 A gas inlet 21; a heating barren liquor inlet 22 is arranged at the top of the high-efficiency gas-liquid mixing absorption device; a rich liquid outlet is formed in the lower part of the rich liquid storage tank; the rich liquid outlet is connected with a heating medium inlet of the lean/rich liquid heat exchanger 3 through a sodium citrate absorption liquid delivery pump; poor appetiteA heating medium outlet of the rich liquid heat exchanger 3 is connected with the desorption tower 5; a gas outlet is formed in the top of the desorption tower 5; a liquid outlet is arranged at the lower part of the desorption tower 5; the liquid outlet is connected with the barren liquor storage tank 4; the top of the barren liquor storage tank 4 is also provided with a tail gas outlet; the lower part of the barren liquor storage tank is also provided with a desorption barren liquor outlet; the desorption lean solution outlet is connected with a refrigerant inlet of the lean/rich solution heat exchanger through a desorption lean solution delivery pump; and a refrigerant outlet of the lean/rich liquid heat exchanger is connected with a heating lean liquid inlet at the top of the efficient gas-liquid mixing absorption device through a pipeline. The gas-liquid separator 6 is connected to the exhaust port of the rich liquid storage tank; the gas-liquid separator 6 discharges the gas through a top drain port.
The top of the efficient gas-liquid mixing absorption device is provided with a spraying device; the spraying device is connected with a heat medium outlet of the lean/rich liquid heat exchanger through a pipeline.
The invention discloses a method for desulfurizing sodium citrate of a low-concentration sulfur dioxide gas, which comprises the following steps: the sodium citrate of the low-concentration sulfur dioxide gas enters a high-efficiency gas-liquid mixed absorption device, is fully contacted with the heated desorption barren solution discharged from a barren/rich solution heat exchanger, and the absorption rich solution is discharged into a rich solution storage tank together with tail gas; and the gas in the rich liquid storage tank is treated by a gas-liquid separator and then discharged. And the absorption rich liquid in the rich liquid storage tank is pumped into the lean/rich liquid heat exchanger by a sodium citrate absorption liquid delivery pump, and enters a desorption tower after exchanging heat with the desorption lean liquid pumped into the lean liquid storage tank from the lean liquid storage tank, and the desorption lean liquid in the desorption tower is discharged into the lean liquid storage tank.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.
Claims (3)
1. The utility model provides a gaseous sodium citrate desulfurization of low concentration sulfur dioxide is equipped which characterized in that: comprises thatThe device comprises a rich liquid storage tank, a high-efficiency gas-liquid mixed absorption device, a lean/rich liquid heat exchanger, a lean liquid storage tank and a desorption tower; the rich liquid storage tank is a horizontal tank body; a rich liquid inlet is formed in the top of the rich liquid storage tank; a high-efficiency gas-liquid mixing absorption device is arranged on the rich liquid inlet; the bottom of the high-efficiency gas-liquid mixing absorption device is communicated with the rich liquid inlet, and one side of the top of the high-efficiency gas-liquid mixing absorption device is provided with SO2A gas inlet; the top of the high-efficiency gas-liquid mixing absorption device is provided with a heating barren solution inlet; a rich liquid outlet is formed in the lower part of the rich liquid storage tank; the rich liquid outlet is connected with a heating medium inlet of the lean/rich liquid heat exchanger through a sodium citrate absorption liquid delivery pump; a heating medium outlet of the lean/rich liquid heat exchanger is connected with the desorption tower; a gas outlet is formed in the top of the desorption tower; a liquid outlet is arranged at the lower part of the desorption tower; the liquid outlet is connected with the barren liquor storage tank; the top of the barren liquor storage tank is also provided with a tail gas outlet; the lower part of the barren liquor storage tank is also provided with a desorption barren liquor outlet; the desorption lean solution outlet is connected with a refrigerant inlet of the lean/rich solution heat exchanger through a desorption lean solution delivery pump; and a refrigerant outlet of the lean/rich liquid heat exchanger is connected with a heating lean liquid inlet at the top of the efficient gas-liquid mixing absorption device through a pipeline.
2. The low-concentration sulfur dioxide gas sodium citrate desulfurization device of claim 1, characterized in that: the exhaust port of the rich liquid storage tank is connected with a gas-liquid separator; the gas-liquid separator discharges gas through a drain hole at the top.
3. The low-concentration sulfur dioxide gas sodium citrate desulfurization device of claim 1, characterized in that: the top of the high-efficiency gas-liquid mixing absorption device is provided with a spraying device; the spraying device is connected with a heat medium outlet of the lean/rich liquid heat exchanger through a pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896036.0U CN210356587U (en) | 2019-06-14 | 2019-06-14 | Low-concentration sulfur dioxide gas sodium citrate desulfurization equipment |
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|---|---|---|---|
| CN201920896036.0U CN210356587U (en) | 2019-06-14 | 2019-06-14 | Low-concentration sulfur dioxide gas sodium citrate desulfurization equipment |
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| CN210356587U true CN210356587U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110292833A (en) * | 2019-06-14 | 2019-10-01 | 南京高源环保工程有限公司 | A kind of low-concentration sulfur dioxide gas sodium citrate sulfur method and equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110292833A (en) * | 2019-06-14 | 2019-10-01 | 南京高源环保工程有限公司 | A kind of low-concentration sulfur dioxide gas sodium citrate sulfur method and equipment |
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