CN210584343U - Exhaust gas purification device - Google Patents
Exhaust gas purification device Download PDFInfo
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- CN210584343U CN210584343U CN201920891102.5U CN201920891102U CN210584343U CN 210584343 U CN210584343 U CN 210584343U CN 201920891102 U CN201920891102 U CN 201920891102U CN 210584343 U CN210584343 U CN 210584343U
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- hydrogen sulfide
- carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model relates to an exhaust gas purification device, include: the carbon dioxide flash tower is provided with a first section cavity of the carbon dioxide flash tower and a third section cavity of the carbon dioxide flash tower from bottom to top; the hydrogen sulfide concentration tower is provided with a first section cavity of the hydrogen sulfide concentration tower and a third section cavity of the hydrogen sulfide concentration tower from bottom to top. The semi-lean liquid feeding pump is communicated with the bottom end of the third section chamber of the carbon dioxide flash tower and is communicated with the interior of the first section chamber of the carbon dioxide flash tower; the reabsorption feeding pump is communicated with the bottom end of the third section of the cavity of the carbon dioxide flash tower and is communicated with the interior of the third section of the cavity of the hydrogen sulfide concentration tower; and the thermal regeneration tower feeding pump is communicated with the bottom end of the third section chamber of the hydrogen sulfide concentration tower and is communicated with the inside of the first section chamber of the hydrogen sulfide concentration tower. The exhaust gas purification apparatus can improve the hydrogen sulfide removal efficiency for the exhaust gas.
Description
Technical Field
The utility model relates to a chemical industry technical field especially relates to exhaust gas purification device.
Background
With the improvement of the scientific and technological level and the economic level, the coal chemical industry in China makes great progress. The development of gas purification processes such as low-temperature methanol washing processes, which are required to be adopted in process devices for direct liquefaction and indirect liquefaction of coal and preparation of chemical products from coal gas, is becoming more and more mature. Wherein the low-temperature methanol process uses cold methanol as absorption solvent, and uses methanol to treat acidic gas (such as carbon dioxide CO) at low temperature2Hydrogen sulfide H2S and carbonyl sulfide COS, etc.) and is a physical absorption method for removing acid gas from raw material gas. The low-temperature methanol washing process is a gas purification process with low economic cost and high purification degree, and is widely applied to devices for synthesizing ammonia, methanol and other carbon-based synthesis, city gas, industrial hydrogen production, natural gas desulfurization and the like at home and abroad.
However, for the carbon dioxide tail gas, i.e. the exhaust gas, discharged from the second carbon dioxide flash tower section, the third carbon dioxide flash tower section and the third hydrogen sulfide concentration tower section in the low-temperature methanol washing device at present, the content of hydrogen sulfide in the exhaust gas far exceeds the allowable content required by the process design and the environmental protection index, a reabsorption feed pump is usually adopted to convey three strands of reabsorption methanol solutions to the first carbon dioxide flash tower section, the first hydrogen sulfide concentration tower section and the third hydrogen sulfide concentration tower section respectively for removing hydrogen sulfide. However, in this scheme, the flow rate of the methanol solution introduced to the hydrogen sulfide concentration tower for reabsorption is low, and the hydrogen sulfide removal efficiency is low.
Therefore, there is a need in the art for an exhaust gas purification apparatus with high hydrogen sulfide removal efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an exhaust gas purification device which can at least solve the technical problems of the parts.
According to the utility model discloses an aspect provides an exhaust gas purification device, include: the carbon dioxide flash tower is provided with a first section cavity of the carbon dioxide flash tower and a third section cavity of the carbon dioxide flash tower from bottom to top; the hydrogen sulfide concentration tower is provided with a first section cavity of the hydrogen sulfide concentration tower and a third section cavity of the hydrogen sulfide concentration tower from bottom to top; a semi-lean liquid feeding pump which is communicated with the bottom end of the third section chamber of the carbon dioxide flash tower through a semi-lean liquid feeding pump inlet pipeline and is communicated with the interior of the first section chamber of the carbon dioxide flash tower through a semi-lean liquid feeding pump outlet pipeline; the reabsorption feeding pump is communicated with the bottom end of the third-section chamber of the carbon dioxide flash tower through a reabsorption feeding pump inlet pipeline and is communicated with the interior of the third-section chamber of the hydrogen sulfide concentration tower through a reabsorption feeding pump outlet pipeline; and the thermal regeneration tower feeding pump is communicated with the bottom end of the third section chamber of the hydrogen sulfide concentration tower through a thermal regeneration tower feeding pump inlet pipeline, and is communicated with the inside of the first section chamber of the hydrogen sulfide concentration tower through a thermal regeneration tower feeding pump outlet pipeline.
Compared with the prior art, the exhaust gas purification device in the embodiment completely leads the solution led out by the outlet pipeline of the reabsorption feeding pump to the inside of the third section chamber of the hydrogen sulfide concentration tower, but does not lead to the inside of the first section chamber of the carbon dioxide flash tower and the inside of the first section chamber of the hydrogen sulfide concentration tower, the solution originally led to the first section chamber of the carbon dioxide flash tower is replaced by the solution led out by the outlet pipeline of the semi-lean liquid feeding pump, and the solution originally led to the third section chamber of the hydrogen sulfide concentration tower is replaced by the solution led out by the outlet pipeline of the feeding pump of the thermal regeneration tower.
Preferably, the method further comprises the following steps: a first flow regulating valve group provided on the semi-lean liquid feed pump outlet line; a second set of flow regulating valves disposed on the thermal regeneration tower feed pump outlet line.
Preferably, the first flow regulating valve group includes: a first regulating valve provided on the semi-lean liquid feed pump outlet line; a first front stop valve disposed on the semi-lean feed pump outlet line between the first regulating valve and the semi-lean feed pump; a first rear stop valve disposed on the semi-lean liquid feed pump outlet line between the first regulating valve and the carbon dioxide flash column; a first flow meter disposed on the semi-lean feed pump outlet line between the first front stop valve and the semi-lean feed pump. Therefore, the flow in the outlet pipeline of the semi-lean liquid feeding pump can be monitored and adjusted in real time.
Preferably, the second flow regulating valve group includes: a second regulating valve disposed on the thermal regeneration tower feed pump outlet line; a second front stop valve disposed on the thermal regeneration tower feed pump outlet line between the second regulating valve and the thermal regeneration tower feed pump; a second rear stop valve arranged on an outlet pipeline of the feeding pump of the thermal regeneration tower and positioned between the second regulating valve and the hydrogen sulfide concentration tower; a second flow meter disposed on the thermal regeneration tower feed pump outlet line between the second front stop valve and the thermal regeneration tower feed pump. Therefore, the flow in the outlet pipeline of the feeding pump of the thermal regeneration tower can be monitored in real time and adjusted.
Preferably, the first flow regulating valve group further comprises: a first secondary line having a first end in communication with the semi-lean feed pump outlet line between the first front stop valve and the first flow meter and a second end in communication with the semi-lean feed pump outlet line between the first rear stop valve and the carbon dioxide flash column; a first secondary shutoff valve disposed on the first secondary line. Thereby, a proper operation of the exhaust gas purification apparatus during the calibration or overhaul of the first regulating valve is ensured.
Preferably, the second flow regulating valve group further comprises: a second secondary line having a first end in communication with the thermal regeneration column feed pump outlet line between the second front stop valve and the second flow meter and a second end in communication with the thermal regeneration column feed pump outlet line between the second rear stop valve and the hydrogen sulfide concentration column; a second secondary shutoff valve disposed on the second secondary line. Thereby, a proper operation of the exhaust gas purification apparatus during the calibration or overhaul of the second regulating valve is ensured.
Preferably, the first flow regulating valve group further comprises: a first pilot valve in communication with the semi-lean feed pump outlet line between the first front stop valve and the first regulator valve. Thereby, the solution between the first front stop valve and the first rear stop valve can be discharged during the maintenance of the first regulating valve.
Preferably, the second flow regulating valve group further comprises: a second pilot valve in communication with the thermal regeneration column feed pump outlet line between the second front stop valve and the second regulator valve. Thereby, the solution between the second front stop valve and the second rear stop valve can be discharged during the maintenance of the second regulating valve.
Preferably, the method further comprises the following steps: a carbon dioxide flash column line in communication with the interior of the carbon dioxide flash column first stage chamber and in communication with the semi-lean feed pump outlet line through a first tee.
Preferably, a hydrogen sulfide concentrator line in communication with the interior of the hydrogen sulfide concentrator first stage chamber and in communication with the thermal regeneration column feed pump outlet line through a second tee.
Additional features and advantages of the invention will be set forth in part in the description which follows, and in part will be apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the invention.
Drawings
Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic connection diagram of an exhaust gas purification apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the first flow control valve block of FIG. 1;
fig. 3 is an enlarged schematic view of the second flow regulating valve block of fig. 1.
Reference numerals:
1. the system comprises a carbon dioxide flash tower 11, a carbon dioxide flash tower first section chamber 12, a carbon dioxide flash tower third section chamber 2, a hydrogen sulfide concentration tower 21, a hydrogen sulfide concentration tower first section chamber 22, a hydrogen sulfide concentration tower third section chamber 3, a semi-lean liquid feed pump 31, a semi-lean liquid feed pump inlet pipeline 32, a semi-lean liquid feed pump outlet pipeline 4, a reabsorption feed pump 41, a reabsorption feed pump inlet pipeline 42, a reabsorption feed pump outlet pipeline 5, a thermal regeneration tower feed pump 51, a thermal regeneration tower feed pump inlet pipeline 52, a thermal regeneration tower feed pump outlet pipeline 6, a first flow regulating valve group 61, a first regulating valve 62, a first front stop valve 63, a first rear stop valve 64, a first flow meter 65, a first secondary pipeline 66, a first secondary stop valve 67, a first conduction valve 7, a second flow regulating valve group 71, a second regulating valve 72, a second front stop valve 73, a second rear stop valve group 71 Stop valve 74, second flowmeter 75, second secondary pipeline 76, second secondary stop valve 77, second pilot valve 8, carbon dioxide flash tower pipeline 9, hydrogen sulfide concentration tower pipeline
Detailed Description
Referring now to the drawings, illustrative aspects of the disclosed apparatus will be described in detail. Although the drawings are provided to present some embodiments of the invention, the drawings are not necessarily to scale of particular embodiments, and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the disclosure of the present invention. The position of some components in the drawings can be adjusted according to actual requirements on the premise of not influencing the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification are not necessarily referring to all drawings or examples.
Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.
As used herein, the terms "first," "second," and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
Referring to fig. 1, the direction of the arrows shown in fig. 1 is the direction of solution flow. The carbon dioxide flash tower 1 is provided with a first stage chamber 11 of the carbon dioxide flash tower, a third stage chamber 12 of the carbon dioxide flash tower and a second stage chamber (not shown in the figure) of the carbon dioxide flash tower from bottom to top. The hydrogen sulfide concentration tower 2 has a first stage chamber 21 of the hydrogen sulfide concentration tower, a third stage chamber 22 of the hydrogen sulfide concentration tower, and a second stage chamber (not shown) of the hydrogen sulfide concentration tower from bottom to top. Wherein the exhaust gas originates from the second stage chamber of the carbon dioxide flash column, the third stage chamber 12 of the carbon dioxide flash column and the third stage chamber 22 of the hydrogen sulfide concentration column.
In addition, a semi-lean solution feeding pump 3 is communicated between the first-stage chamber 11 of the carbon dioxide flash tower and the third-stage chamber 12 of the carbon dioxide flash tower, so that the solution from the third-stage chamber 12 of the carbon dioxide flash tower is pressurized and conveyed to the first-stage chamber 11 of the carbon dioxide flash tower, the acid gas in the gas desorbed by flash evaporation in the first-stage chamber 11 of the carbon dioxide flash tower can be purified, and the purified gas is discharged as a discharge gas through the third-stage chamber 12 of the carbon dioxide flash tower and the second-stage chamber of the carbon dioxide flash tower 1. A heat regeneration tower feed pump 5 is communicated between the third section chamber 22 of the hydrogen sulfide concentration tower and the first section chamber 21 of the hydrogen sulfide concentration tower, so that the solution from the third section chamber 22 of the hydrogen sulfide concentration tower is pressurized and conveyed to the first section chamber 21 of the hydrogen sulfide concentration tower, the acid gas in the resolved gas is concentrated in the first section chamber 21 of the hydrogen sulfide concentration tower, and the purified gas then enters the third section chamber 22 of the hydrogen sulfide concentration tower. A reabsorption feeding pump 4 is communicated between the third-stage chamber 12 of the carbon dioxide flash tower and the third-stage chamber 22 of the hydrogen sulfide concentration tower, so that the solution from the third-stage chamber 12 of the carbon dioxide flash tower is pressurized and conveyed to the third-stage chamber 22 of the hydrogen sulfide concentration tower, the acid gas, particularly hydrogen sulfide, in the gas from the first-stage chamber 21 of the hydrogen sulfide concentration tower is further purified, and the purified gas is discharged as an exhaust gas through the third-stage chamber 22 of the hydrogen sulfide concentration tower.
Alternatively, the-54 ℃ (54 ℃ minus) methanol semi-lean from the third stage chamber 12 of the carbon dioxide flash tower is pressurized to 4.2MPa (unit: MPa) from the semi-lean feed pump 3 and enters the first stage chamber 11 of the carbon dioxide flash tower through the newly added semi-lean feed pump outlet line 32. The sulfur-rich methanol solution at the temperature of-49 ℃ from the third section chamber 22 of the hydrogen sulfide concentration tower is pressurized to 3.0MPa by the feeding pump 5 of the self-heating regeneration tower and enters the first section chamber 21 of the hydrogen sulfide concentration tower through the outlet pipeline 52 of the feeding pump 5 of the newly added heat regeneration tower.
It can be seen that the reabsorbing methanol liquid from the third stage chamber 12 of the carbon dioxide flash tower is pressurized by the reabsorbing feed pump 4, and under the condition that the respective valves on the pipeline 8 of the carbon dioxide flash tower and the pipeline 9 of the hydrogen sulfide concentration tower are closed, the reabsorbing feed pump outlet pipeline 42 completely enters the third stage chamber 22 of the hydrogen sulfide concentration tower, and the reabsorbing methanol liquid is not required to be shunted into other chambers through the pipeline 8 of the carbon dioxide flash tower and the pipeline 9 of the hydrogen sulfide concentration tower, and under the condition that the excess flow of the reabsorbing feed pump 4 is not caused, the flow of the reabsorbing methanol liquid entering the third stage chamber 22 of the hydrogen sulfide concentration tower is greatly increased, so that the absorption capacity for the hydrogen sulfide is greatly increased, the hydrogen sulfide removal efficiency for the exhaust gas discharged through the third stage chamber 22 of the hydrogen sulfide concentration tower is increased, and the environmental protection. In actual use, the carbon dioxide flash column line 8 and the hydrogen sulfide concentration column line 9, and corresponding valve assemblies may not be provided, so as to save economic cost while ensuring the function of the present embodiment.
Alternatively, the material of semi-lean feed pump outlet line 32 and thermal regeneration column feed pump 5 outlet line 52 may be a corrosion resistant material, such as stainless steel 06Cr19Ni 10. The diameters of the outlet pipeline 32 of the semi-lean liquid feeding pump and the outlet pipeline 52 of the feeding pump 5 of the thermal regeneration tower can be DN100 (the nominal diameter is 100 mm), and the design flow can be 18-35 m3In terms of/h (unit: cubic meter/hour).
As shown in fig. 1, a first flow regulating valve group 6 is disposed on the outlet line 32 of the semi-lean feed pump for regulating the flow of the solution pressurized and outputted from the semi-lean feed pump 3, so as to avoid the overload of the semi-lean feed pump 3 and the carbon content of the carbon dioxide absorption device exceeding the standard in the case of an excessive flow, and the unqualified index of the fuel gas in the case of an excessive flow. The second flow regulating valve group 7 is arranged on an outlet pipeline 52 of the feeding pump 5 of the thermal regeneration tower and is used for regulating the flow of the solution output after the feeding pump 5 of the thermal regeneration tower is pressurized, so that the conditions that the feeding pump 5 of the thermal regeneration tower is overloaded and the carbon content of the carbon dioxide absorption device exceeds the standard under the condition that the flow is too large and the indexes of the fuel gas are unqualified under the condition that the flow is too small are avoided.
As shown in fig. 1 and 2, the direction of the arrow shown in fig. 2 is the direction of the solution flow. A first regulating valve 61 is provided on the semi-lean feed pump outlet line 32. A first front stop valve 62 is provided on the semi-lean feed pump outlet line 32 between the first regulating valve 61 and the semi-lean feed pump 3. A first rear shutoff valve 63 is provided on the semi-lean feed pump outlet line 32, and between the first regulating valve 61 and the carbon dioxide flash column 1. A first flow meter 64 is disposed on the semi-lean feed pump outlet line 32 between the first front stop valve 62 and the semi-lean feed pump 3. The first secondary line 65 has a first end in communication with the semi-lean feed pump outlet line 32 between the first front stop valve 62 and the first flow meter 64, and a second end in communication with the semi-lean feed pump outlet line 32 between the first rear stop valve 63 and the carbon dioxide flash column 1. A first secondary shutoff valve 66 is provided on the first secondary line 65. The first pilot shower valve 67 has one end communicating with the semi-lean feed pump outlet line 32 between the first front stop valve 62 and the first regulating valve 61, and the other end connectable to a sump for sewage discharge.
Specifically, during normal use, the first secondary stop valve 66 and the first pilot valve 67 are kept closed, and the first front stop valve 62, the first regulating valve 61 and the first rear stop valve 63 are kept open, so that the solution from the third-stage chamber 12 of the carbon dioxide flash tower is pressurized by the semi-lean feed pump 3 and then enters the first-stage chamber 11 of the carbon dioxide flash tower. In this process, the flow rate of the solution conveyed in the semi-lean feed pump outlet line 32 is observed by the first flow meter 64, and the flow rate of the solution conveyed in the semi-lean feed pump outlet line 32 is adjusted by the first regulating valve 61, preferably 32.522t/h (unit: ton/hr), according to the observed value of the first flow meter 64. When the first regulating valve 61 is overhauled or calibrated, the first front stop valve 62 and the first rear stop valve 63 are closed, and the first auxiliary stop valve 66 is opened to ensure that the solution from the third section chamber 12 of the carbon dioxide flash tower normally enters the first section chamber 11 of the carbon dioxide flash tower, so that the solution flow entering the first section chamber 11 of the carbon dioxide flash tower is prevented from being influenced. Meanwhile, when the first regulating valve 61 is repaired or calibrated, the first pilot valve 67 is opened to discharge the solution in the line between the first front stop valve 62 and the first rear stop valve 63. Wherein the diameter of the first secondary line 65 may be DN 80.
As shown in fig. 1 and 3, the direction of the arrow shown in fig. 3 is the solution flow direction. A second regulating valve 71 is arranged on the outlet line 52 of the thermal regeneration column feed pump 5. A second front stop valve 72 is provided on the hot regenerator column feed pump 5 outlet line 52 between the second regulating valve 71 and the hot regenerator column feed pump 5. A second rear shutoff valve 73 is provided on the outlet line 52 of the thermal regeneration column feed pump 5 between the second regulating valve 71 and the hydrogen sulfide concentration column 2. A second flow meter 74 is disposed on the thermal regeneration tower feed pump 5 outlet line 52 between the second front stop valve 72 and the thermal regeneration tower feed pump 5. The second sub-line 75 has a first end communicating with the thermal regeneration column feed pump 5 outlet line 52 between the second front cut-off valve 72 and the second flow meter 74, and a second end communicating with the thermal regeneration column feed pump 5 outlet line 52 between the second rear cut-off valve 73 and the hydrogen sulfide concentrating column 2. A second secondary shutoff valve 76 is provided on the second secondary line 75. The second sub-line 75 has a first end communicating with the thermal regeneration column feed pump 5 outlet line 52 between the second front cut-off valve 72 and the second flow meter 74, and a second end communicating with the thermal regeneration column feed pump 5 outlet line 52 between the second rear cut-off valve 73 and the hydrogen sulfide concentrating column 2. A second secondary shutoff valve 76 is provided on the second secondary line 75.
Specifically, in normal use, the second sub-cut valve 76 and the second pilot shower valve 77 are kept closed, and the second front cut valve 72, the second regulating valve 71, and the second rear cut valve 73 are kept open, so that the solution from the third-stage chamber 22 of the hydrogen sulfide concentration tower is pressurized by the heat regeneration tower feed pump 5 and then enters the first-stage chamber 21 of the hydrogen sulfide concentration tower. In the process, the second flow meter 74 is used to observe the flow rate of the solution conveyed in the outlet line 52 of the thermal regeneration column feed pump 5 and, on the basis of the observed value of the second flow meter 74, the flow rate of the solution conveyed via the outlet line 52 of the thermal regeneration column feed pump 5 is regulated by the second regulating valve 71, preferably 19.513 t/h. When the second regulating valve 71 is overhauled or calibrated, the second front stop valve 72 and the second rear stop valve 73 are closed, and the second secondary stop valve 76 is opened to ensure that the solution from the third-stage chamber 22 of the hydrogen sulfide concentration tower normally enters the first-stage chamber 21 of the hydrogen sulfide concentration tower, so that the solution flow entering the first-stage chamber 21 of the hydrogen sulfide concentration tower is prevented from being influenced. Meanwhile, when the second regulating valve 71 is repaired or calibrated, the second pilot valve 77 is opened to discharge the solution in the line between the second front stop valve 72 and the second rear stop valve 73. Wherein the second secondary line 75 may have a diameter DN 80.
As shown in fig. 1, where a carbon dioxide flash column line 8 and corresponding valve assemblies are provided, the carbon dioxide flash column line 8 delivers the solution into the carbon dioxide flash column first stage chamber 11, communicating with the semi-lean feed pump outlet line 32 through a first tee. Wherein, the diameter of the carbon dioxide flash tower pipeline 8 can be DN100, and the first tee piece is preferably a same-diameter tee piece with the size of 100mm multiplied by 100 mm.
In addition, where a hydrogen sulfide concentrator line 9 and corresponding valve assemblies are provided, the hydrogen sulfide concentrator line 9 delivers the solution into the hydrogen sulfide concentrator first stage chamber 21, which communicates with the thermal regenerator feed pump 5 outlet line 52 through a second tee fitting. Wherein, the diameter of the pipeline 9 of the hydrogen sulfide concentration tower can be DN100, and the second tee piece is preferably a same-diameter tee piece with the size of 100mm multiplied by 100 mm.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above description is only illustrative of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention are to be considered within the scope of the invention.
Claims (10)
1. An exhaust gas purification apparatus, characterized by comprising:
the carbon dioxide flash tower is provided with a first section cavity of the carbon dioxide flash tower and a third section cavity of the carbon dioxide flash tower from bottom to top;
the hydrogen sulfide concentration tower is provided with a first section cavity of the hydrogen sulfide concentration tower and a third section cavity of the hydrogen sulfide concentration tower from bottom to top;
a semi-lean liquid feeding pump which is communicated with the bottom end of the third section chamber of the carbon dioxide flash tower through a semi-lean liquid feeding pump inlet pipeline and is communicated with the interior of the first section chamber of the carbon dioxide flash tower through a semi-lean liquid feeding pump outlet pipeline;
the reabsorption feeding pump is communicated with the bottom end of the third-section chamber of the carbon dioxide flash tower through a reabsorption feeding pump inlet pipeline and is communicated with the interior of the third-section chamber of the hydrogen sulfide concentration tower through a reabsorption feeding pump outlet pipeline;
and the thermal regeneration tower feeding pump is communicated with the bottom end of the third section chamber of the hydrogen sulfide concentration tower through a thermal regeneration tower feeding pump inlet pipeline, and is communicated with the inside of the first section chamber of the hydrogen sulfide concentration tower through a thermal regeneration tower feeding pump outlet pipeline.
2. The exhaust gas purification apparatus according to claim 1, further comprising:
a first flow regulating valve group provided on the semi-lean liquid feed pump outlet line;
a second set of flow regulating valves disposed on the thermal regeneration tower feed pump outlet line.
3. The exhaust gas purification apparatus according to claim 2, wherein the first flow rate regulation valve group includes:
a first regulating valve provided on the semi-lean liquid feed pump outlet line;
a first front stop valve disposed on the semi-lean feed pump outlet line between the first regulating valve and the semi-lean feed pump;
a first rear stop valve disposed on the semi-lean liquid feed pump outlet line between the first regulating valve and the carbon dioxide flash column;
a first flow meter disposed on the semi-lean feed pump outlet line between the first front stop valve and the semi-lean feed pump.
4. The exhaust gas purification apparatus according to claim 2, wherein the second flow rate adjustment valve group includes:
a second regulating valve disposed on the thermal regeneration tower feed pump outlet line;
a second front stop valve disposed on the thermal regeneration tower feed pump outlet line between the second regulating valve and the thermal regeneration tower feed pump;
a second rear stop valve arranged on an outlet pipeline of the feeding pump of the thermal regeneration tower and positioned between the second regulating valve and the hydrogen sulfide concentration tower;
a second flow meter disposed on the thermal regeneration tower feed pump outlet line between the second front stop valve and the thermal regeneration tower feed pump.
5. The exhaust gas purification apparatus according to claim 3, wherein the first flow rate adjustment valve group further comprises:
a first secondary line having a first end in communication with the semi-lean feed pump outlet line between the first front stop valve and the first flow meter and a second end in communication with the semi-lean feed pump outlet line between the first rear stop valve and the carbon dioxide flash column;
a first secondary shutoff valve disposed on the first secondary line.
6. The exhaust gas purification apparatus according to claim 4, wherein the second flow rate adjustment valve group further comprises:
a second secondary line having a first end in communication with the thermal regeneration column feed pump outlet line between the second front stop valve and the second flow meter and a second end in communication with the thermal regeneration column feed pump outlet line between the second rear stop valve and the hydrogen sulfide concentration column;
a second secondary shutoff valve disposed on the second secondary line.
7. The exhaust gas purification apparatus according to claim 5, wherein the first flow rate adjustment valve group further comprises:
a first pilot valve in communication with the semi-lean feed pump outlet line between the first front stop valve and the first regulator valve.
8. The exhaust gas purification apparatus according to claim 6, wherein the second flow rate adjustment valve group further comprises:
a second pilot valve in communication with the thermal regeneration column feed pump outlet line between the second front stop valve and the second regulator valve.
9. The exhaust gas purification apparatus according to claim 7, further comprising:
a carbon dioxide flash column line in communication with the interior of the carbon dioxide flash column first stage chamber and in communication with the semi-lean feed pump outlet line through a first tee.
10. The exhaust gas purification apparatus according to claim 8, further comprising:
a hydrogen sulfide concentrator line in communication with the interior of the hydrogen sulfide concentrator first stage chamber and in communication with the thermal regeneration column feed pump outlet line through a second tee.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920891102.5U CN210584343U (en) | 2019-06-13 | 2019-06-13 | Exhaust gas purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920891102.5U CN210584343U (en) | 2019-06-13 | 2019-06-13 | Exhaust gas purification device |
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| Publication Number | Publication Date |
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| CN210584343U true CN210584343U (en) | 2020-05-22 |
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| CN201920891102.5U Expired - Fee Related CN210584343U (en) | 2019-06-13 | 2019-06-13 | Exhaust gas purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000735A1 (en) * | 2020-06-30 | 2022-01-06 | 大连佳纯气体净化技术开发有限公司 | Washing rich solution co2 desorption device and method for low-temperature methanol washing |
-
2019
- 2019-06-13 CN CN201920891102.5U patent/CN210584343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000735A1 (en) * | 2020-06-30 | 2022-01-06 | 大连佳纯气体净化技术开发有限公司 | Washing rich solution co2 desorption device and method for low-temperature methanol washing |
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