CN220513832U - Flue gas emission treatment system - Google Patents
Flue gas emission treatment system Download PDFInfo
- Publication number
- CN220513832U CN220513832U CN202322014624.6U CN202322014624U CN220513832U CN 220513832 U CN220513832 U CN 220513832U CN 202322014624 U CN202322014624 U CN 202322014624U CN 220513832 U CN220513832 U CN 220513832U
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- CN
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- Prior art keywords
- liquid
- alkali
- flue gas
- amine
- pipeline
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000003546 flue gas Substances 0.000 title claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 141
- 239000003513 alkali Substances 0.000 claims abstract description 81
- 150000001412 amines Chemical class 0.000 claims abstract description 58
- 238000011084 recovery Methods 0.000 claims abstract description 52
- 238000005406 washing Methods 0.000 claims abstract description 45
- 239000002699 waste material Substances 0.000 claims abstract description 40
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000011033 desalting Methods 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 10
- 230000023556 desulfurization Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 12
- 239000002253 acid Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- CNPURSDMOWDNOQ-UHFFFAOYSA-N 4-methoxy-7h-pyrrolo[2,3-d]pyrimidin-2-amine Chemical compound COC1=NC(N)=NC2=C1C=CN2 CNPURSDMOWDNOQ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Abstract
The utility model relates to the technical field of flue gas treatment, and provides a flue gas emission treatment system, which comprises a desulfurizing tower, an amine liquid recovery device, an alkali liquid washing circulation device, a concentrated alkali tank and an amine liquid purification device, wherein a waste liquid recovery port of the desulfurizing tower is respectively communicated with the amine liquid recovery device and the alkali liquid washing circulation device, and liquid return pipelines of the amine liquid recovery device and the alkali liquid washing circulation device are respectively communicated with a spray pipeline of the desulfurizing tower; the liquid return pipeline of the concentrated alkali tank is communicated with the alkali liquid washing circulation device; a branch pipeline is further arranged on the liquid return pipeline of the alkali liquid washing and circulating device and is communicated with the amine liquid recovery device; the method effectively reduces the amount of amine liquid taken away by discharged flue gas, reduces the consumption of alkali liquor, realizes the standard discharge of flue gas of a desulfurization system, and reduces the production cost of enterprises.
Description
Technical Field
The utility model relates to the technical field of flue gas treatment, in particular to a flue gas emission treatment system.
Background
When the low-altitude flue gas is treated, organic amine is basically adopted to absorb sulfur dioxide in the flue gas, then high-concentration sulfur dioxide is resolved through high temperature, and the high-concentration sulfur dioxide is sent to an acid making system for acid making. Since the low-altitude flue gas desulfurization system is operated, the emergent treatment measures of the discharged flue gas mainly comprise the steps of pumping alkali liquor into a water washing circulation section to absorb and discharge the flue gas sulfur dioxide, and the problems of high alkali liquor consumption, high alkali liquor concentration, low absorption efficiency, pollution to the surrounding environment and the like exist in the operation process. The system has large quantity of amine liquid taken away along with the discharged flue gas in the operation process, and the amine liquid loss is high.
Disclosure of Invention
The utility model aims to provide a flue gas emission treatment system which can effectively reduce the amount of amine liquid taken away by the discharged flue gas, reduce the consumption of alkali liquor, realize the multistage recovery of the amine liquid and reduce the production cost of enterprises.
The embodiment of the utility model is realized by the following technical scheme:
a flue gas emission treatment system, which comprises a desulfurizing tower, an amine liquid recovery device, an alkali liquid washing circulation device, a concentrated alkali tank and an amine liquid purification device,
the waste liquid recovery port of the desulfurizing tower is respectively communicated with the amine liquid recovery device and the alkali liquid washing circulation device,
the liquid return pipeline of the amine liquid recovery device and the alkali liquid washing and circulating device is respectively communicated with the spraying pipeline of the desulfurizing tower;
the liquid return pipeline of the concentrated alkali tank is communicated with the alkali liquid washing circulation device;
and a branch pipeline is further arranged on the liquid return pipeline of the alkali liquid washing and circulating device and is communicated with the amine liquid recovery device.
Further, the discharge port of the amine liquid purifying device is also communicated with a waste alkali liquid pipeline, and the waste alkali liquid pipeline is communicated with the alkali liquid washing circulating device.
Further, a first electric valve is arranged on the waste lye pipeline.
Further, a second electric valve is arranged on the branch pipeline.
Further, at least two waste liquid recovery ports are arranged on the desulfurization tower, and the two waste liquid recovery ports are respectively communicated with the amine liquid recovery device and the alkali liquid washing circulation device.
Further, at least two spraying pipelines are arranged in the desulfurizing tower, and the two spraying pipelines are respectively communicated with the amine liquid recovery device and the alkali liquid washing circulation device.
Further, the spraying pipeline is arranged above the waste liquid recovery port, and one spraying pipeline and one waste liquid recovery port are arranged at intervals.
Further, the amine liquid recovery device and the alkali liquid washing circulation device are also communicated with a desalting water pipeline.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
1. according to the utility model, the waste alkali liquid pipeline and the branch pipeline are additionally arranged, so that the regenerated waste liquid produced by the amine liquid purification device flows into the alkali liquid washing circulation device through the waste alkali liquid pipeline, and the waste alkali liquid can be used for replacing 30% sodium hydroxide alkali liquid to be injected into the alkali liquid spraying system to absorb and discharge flue gas, so that the alkali liquid utilization efficiency of the desulfurization system is improved, the flue gas discharge concentration is reduced, and the multi-stage recovery of the waste amine liquid is realized; in addition, the utility model changes the use mode of the organic amine liquid desulfurization alkali liquor spraying system, so that the alkali liquor spraying system is changed into a dual-purpose device for absorbing and discharging flue gas and recycling amine liquid.
2. The treatment system can effectively reduce the sodium hydroxide consumption of the organic amine desulfurization system, saves more than 40 tons of sodium hydroxide consumption each year, and can save about 12 ten thousand per year of production cost; the amine liquid loss of the organic amine desulfurization system can be effectively reduced, the organic amine liquid is saved by about 2 tons each year, and the production cost can be saved by about 10 ten thousand per year; the flue gas emission standard of the desulfurization system is realized, the emission flue gas exceeding accident caused by high flue gas concentration at the inlet of the system is reduced, and the service life of the system is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a flue gas emission treatment system provided by an embodiment of the present utility model;
icon: the device comprises a 1-desulfurizing tower, a 2-amine liquid recovery device, a 3-alkali liquid washing circulation device, a 4-concentrated alkali tank, a 5-amine liquid purification device, a 6-second electric valve, a 7-branch pipeline, an 8-first electric valve, a 9-waste alkali liquid pipeline, a 10-spraying pipeline and an 11-waste liquid recovery port.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
A flue gas emission treatment system, which comprises a desulfurizing tower 1, an amine liquid recovery device 2, an alkali liquid washing circulation device 3, a concentrated alkali tank 4 and an amine liquid purification device 5,
the waste liquid recovery port 11 of the desulfurizing tower 1 is respectively communicated with the amine liquid recovery device 2 and the alkali liquid washing circulation device 3,
the liquid return pipeline of the amine liquid recovery device 2 and the alkali liquid washing circulation device 3 is respectively communicated with the spray pipeline 10 of the desulfurizing tower 1;
the liquid return pipeline of the concentrated alkali tank 4 is communicated with the alkali liquid washing circulation device 3; the discharge port of the amine liquid purifying device 5 is also communicated with a waste alkali liquid pipeline 9, and the waste alkali liquid pipeline 9 is communicated with the alkali liquid washing and circulating device 3;
the liquid return pipeline of the alkali liquid washing and circulating device 3 is also provided with a branch pipeline 7, and the branch pipeline 7 is communicated with the amine liquid recovery device 2.
In the utility model, a waste lye pipeline 9 is newly added at the upper part of the recovery tank of the lye washing and circulating device 3 and is communicated with the amine liquid purifying device 5, the waste lye generated by the amine liquid purifying device 5 enters the recovery tank of the lye washing and circulating device 3, and when the concentration of discharged flue gas is high: the alkali liquor washing and circulating device 3 is operated, and as the liquid return pipeline of the alkali liquor washing and circulating device 3 is communicated with the spray pipeline 10 of the desulfurizing tower 1, sulfur dioxide can be absorbed by contacting with flue gas, and the liquid return pipeline of the alkali liquor washing and circulating device 3 is also communicated with the branch pipeline 7 communicated with the amine liquid recovery device 2; thus, the amine liquid flows through the alkali liquid washing and circulating device 3 and the amine liquid recovery device 2, and the multi-stage recovery of the waste amine liquid is realized; in addition, the waste liquid produced by the amine liquid purification device 5 flows into the alkali liquid washing circulation device 3 through the waste alkali liquid pipeline 9, so that the waste alkali liquid can replace 30% sodium hydroxide alkali liquid in the concentrated alkali tank 4 to be injected into an alkali liquid spraying system to absorb and discharge flue gas, the alkali liquid utilization efficiency of the desulfurization system is improved, the flue gas discharge concentration is reduced, and meanwhile, the regenerated waste liquid is low-concentration alkali liquid, and the equipment corrosion rate is reduced; when the alkali liquor washing and circulating device 3 does not operate, an electric valve on a branch pipeline 7 of the amine liquor recovery device 2 is opened, and the amine liquor taken away by flue gas in the system section of the alkali liquor washing and circulating device 3 is recovered.
Besides, the utility model also changes the use mode of the organic amine liquid desulfurization alkali liquor spraying system, the original alkali liquor spraying system is only used as one mode of alkali liquor spraying and absorbing smoke, and the alkali liquor spraying system is changed into a dual-purpose device for absorbing and discharging smoke and recycling amine liquid by the improvement (namely, the newly added waste alkali liquor pipeline 9 and the branch pipeline 7) of the utility model.
In this embodiment, the waste lye pipeline 9 is provided with a first electric valve 8, and the branch pipeline 7 is provided with a second electric valve 6; so that the opening and closing of each pipeline can be controlled.
In this embodiment, at least two waste liquid recovery ports 11 are disposed on the desulfurizing tower 1, and the two waste liquid recovery ports 11 are respectively communicated with the amine liquid recovery device 2 and the alkali liquid washing circulation device 3.
In this embodiment, at least two spray pipes 10 are disposed in the desulfurizing tower 1, and the two spray pipes 10 are respectively connected with the amine liquid recovery device 2 and the alkali liquid washing circulation device 3.
In this embodiment, the spraying pipe 10 is disposed above the waste liquid recovery port 11, and one spraying pipe 10 and one waste liquid recovery port 11 are disposed at intervals, so that it is convenient for the alkali liquor to spray and absorb sulfur dioxide in the flue gas better.
In this embodiment, the amine liquid recovery device 2 and the alkali liquid washing circulation device 3 are further connected to a salt removal water pipeline, so that impurities in the liquid in the amine liquid recovery device 2 and the alkali liquid washing circulation device 3 can be removed.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. A flue gas emission treatment system is characterized by comprising a desulfurizing tower, an amine liquid recovery device, an alkali liquid washing circulation device, a concentrated alkali tank and an amine liquid purification device,
the waste liquid recovery port of the desulfurizing tower is respectively communicated with the amine liquid recovery device and the alkali liquid washing circulation device,
the liquid return pipeline of the amine liquid recovery device and the alkali liquid washing and circulating device is respectively communicated with the spraying pipeline of the desulfurizing tower;
the liquid return pipeline of the concentrated alkali tank is communicated with the alkali liquid washing circulation device;
and a branch pipeline is further arranged on the liquid return pipeline of the alkali liquid washing and circulating device and is communicated with the amine liquid recovery device.
2. The flue gas emission treatment system according to claim 1, wherein the discharge port of the amine liquid purification device is further communicated with a waste lye pipeline, and the waste lye pipeline is communicated with the lye washing circulation device.
3. The flue gas emission treatment system according to claim 2, wherein the waste lye pipeline is provided with a first electrically operated valve.
4. The flue gas emission treatment system of claim 1, wherein a second electrically operated valve is provided on the bypass conduit.
5. The flue gas emission treatment system according to claim 1, wherein at least two waste liquid recovery ports are arranged on the desulfurizing tower, and the two waste liquid recovery ports are respectively communicated with the amine liquid recovery device and the alkali liquid washing circulation device.
6. The flue gas emission treatment system according to claim 5, wherein at least two spraying pipelines are arranged in the desulfurizing tower, and the two spraying pipelines are respectively communicated with the amine liquid recovery device and the alkali liquid washing circulation device.
7. The flue gas emission treatment system of claim 6, wherein the spray pipes are disposed above the waste recovery port, and one of the spray pipes is spaced from one of the waste recovery ports.
8. The flue gas emission treatment system according to claim 1, wherein the amine liquid recovery device and the alkali liquid washing circulation device are further communicated with a desalting water pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322014624.6U CN220513832U (en) | 2023-07-28 | 2023-07-28 | Flue gas emission treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322014624.6U CN220513832U (en) | 2023-07-28 | 2023-07-28 | Flue gas emission treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220513832U true CN220513832U (en) | 2024-02-23 |
Family
ID=89936174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322014624.6U Active CN220513832U (en) | 2023-07-28 | 2023-07-28 | Flue gas emission treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220513832U (en) |
-
2023
- 2023-07-28 CN CN202322014624.6U patent/CN220513832U/en active Active
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