CN220284004U - Crude gas impurity removing device utilizing waste water for flushing - Google Patents
Crude gas impurity removing device utilizing waste water for flushing Download PDFInfo
- Publication number
- CN220284004U CN220284004U CN202321789699.5U CN202321789699U CN220284004U CN 220284004 U CN220284004 U CN 220284004U CN 202321789699 U CN202321789699 U CN 202321789699U CN 220284004 U CN220284004 U CN 220284004U
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- CN
- China
- Prior art keywords
- waste water
- heat exchanger
- gas
- buffer tank
- flushing
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- 239000002351 wastewater Substances 0.000 title claims abstract description 132
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 74
- 239000012535 impurity Substances 0.000 title claims abstract description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 51
- 238000005406 washing Methods 0.000 claims abstract description 29
- 238000005507 spraying Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 7
- 239000002817 coal dust Substances 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- 239000010865 sewage Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 239000003034 coal gas Substances 0.000 abstract 4
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the technical field of coal gas purification processes, and particularly discloses a crude coal gas impurity removing device utilizing waste water flushing, which comprises a waste water buffer tank and a flushing unit, wherein the flushing unit comprises a heat exchanger and a spraying assembly, the spraying assembly is connected in the heat exchanger, a waste water inlet of the waste water buffer tank is communicated with a waste water pipeline, a waste water outlet of the waste water buffer tank is communicated with a first waste water flushing pump, an outlet of the first waste water flushing pump is connected with a flushing inlet of the heat exchanger through a pipeline and is communicated with the spraying assembly, a crude coal gas inlet of the heat exchanger is communicated with a gas making workshop, and a sewage outlet and an exhaust outlet of the heat exchanger are respectively communicated with a coal gas water pipeline and a low-temperature methanol washing device. According to the utility model, the waste water in the waste water pipeline is introduced into the waste water buffer tank, then the waste water is pumped into the heat exchanger by the first waste water flushing pump, the raw gas is cooled by the spraying assembly, and meanwhile, particles such as coal dust and the like and ammonia nitrogen substances in the raw gas are removed, so that the impurity removing effect of the device is realized.
Description
Technical Field
The utility model relates to the technical field of gas purification processes, in particular to a crude gas impurity removing device utilizing waste water for flushing.
Background
Raw gas obtained from coal gasification in a gas making workshop needs to be purified by a low-temperature methanol washing device, and the raw gas contains a large amount of CO 2 、CO、H 2 S, oil substances, coal dust and other particulate matters, ammonia nitrogen substances and other impurities, and the low-temperature methanol washing device removes CO in the low-temperature methanol washing device through methanol washing 2 And H 2 S and other impurities, so that the raw gas is purified, and the purification degree requirement of the synthesis gas is met.
However, impurities such as particles including coal dust and ammonia nitrogen substances carried in the raw gas can be crystallized after entering the low-temperature methanol washing device, and impurities are easily accumulated in the low-temperature methanol washing device after long-time operation, so that the operation and maintenance period of equipment such as a methanol heat exchanger and a fine filter in the low-temperature methanol washing device are shortened.
Disclosure of Invention
The utility model aims to provide a crude gas impurity removing device which is flushed by waste water, so as to solve the problem that the crude gas generated in the existing gas making workshop carries particles such as coal dust and ammonia nitrogen substances, and the particles and ammonia nitrogen substances are conveyed to a low-temperature methanol washing device for reaction, crystallization can occur in the low-temperature methanol washing device, and the normal operation of low-temperature methanol washing equipment is influenced by accumulated impurities after long-time operation.
In order to achieve the above purpose, the basic scheme provided by the utility model is as follows: the utility model provides an utilize waste water to wash crude gas edulcoration device, includes the waste water buffer tank and is used for carrying out the washing unit of cooling and edulcoration to crude gas, the washing unit includes the heat exchanger and sprays the subassembly, spray the subassembly and connect in the heat exchanger, waste water buffer tank's waste water import and waste water pipeline intercommunication, waste water buffer tank's waste water export intercommunication has first waste water flushing pump, the export of first waste water flushing pump is through pipeline and the washing access connection of heat exchanger and with spray the subassembly intercommunication, the crude gas import and the gas making workshop intercommunication of heat exchanger, the drain and the gas vent of heat exchanger communicate with gas water pipe network and low temperature methanol washing device respectively.
The principle and the beneficial effects of the utility model are as follows: according to the utility model, wastewater generated by the low-temperature methanol washing device is introduced into the wastewater buffer tank by means of the wastewater pipeline, then the wastewater is pumped into the heat exchanger under the condition of being pressurized to 3.4MPA by the first wastewater flushing pump, the raw gas is cooled through the spraying component from the flushing inlet of the heat exchanger, and meanwhile, particles such as coal dust and ammonia nitrogen substances in the raw gas are removed, so that the impurity removing effect of the device is realized.
A second scheme is a preferable scheme based on the scheme, wherein a flowmeter is arranged on a pipeline between the first waste water flushing pump and a flushing inlet of the heat exchanger; through setting up the flowmeter, the operating personnel of being convenient for monitors the flow in the pipeline that the import of washing of heat exchanger communicates at any time.
The third scheme is the optimization of the second scheme, a second waste water flushing pump is connected to the waste water outlet of the waste water buffer tank, the outlet of the second waste water flushing pump is connected with the flushing inlet of the heat exchanger and is communicated with the spraying assembly, and stop valves are respectively arranged on one sides of the first waste water flushing pump and the second waste water flushing pump, which are close to the waste water buffer tank; the second waste water flushing pump is arranged for standby use, and the whole impurity removing device is ensured to run smoothly when the first waste water flushing pump is overhauled.
In a fourth aspect, the third aspect is preferable, wherein the outlets of the first wastewater flushing pump and the second wastewater flushing pump are communicated with a return pipeline, and the return pipeline is communicated with a wastewater pipeline; through setting up the return line, adjust outlet pressure before first waste water flushing pump and second waste water flushing pump start-up, prevent to hold back the pressure.
The fifth scheme is the optimization of the third scheme, and the exhaust port and the charging port at the top of the wastewater buffer tank are communicated with a nitrogen pipe network; the positive pressure of the waste water buffer tank is maintained by introducing nitrogen into the charging port and discharging nitrogen from the air outlet.
A sixth aspect is that in the fourth aspect, a pressure gauge is arranged on the pipeline close to the first wastewater flushing pump and the second wastewater flushing pump; through setting up the manometer, the operating personnel of being convenient for observe the pressure in the pipeline at any time to judge whether first waste water flushing pump or second waste water flushing pump are in normal operating condition.
The seventh scheme is preferable, and the ball valve is arranged on the return line close to one side of the waste water pipeline; before the first waste water flushing pump and the second waste water flushing pump are started, the ball valve on the return pipeline is opened to perform backflow, so that the pressure of outlets of the first waste water flushing pump and the second waste water flushing pump is prevented from being suppressed, and damage is caused.
Drawings
FIG. 1 is a schematic diagram of a crude gas impurity removing device using waste water flushing.
Detailed Description
The utility model is described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: 1. a waste water buffer tank; 2. a heat exchanger; 3. a first wastewater flush pump; 4. a second wastewater flush pump; 5. a raw gas inlet; 6. a sewage outlet; 7. an exhaust port; 8. a waste water line; 9. a waste water inlet; 10. a waste water outlet; 11. an air outlet; 12. an inflation inlet; 13. flushing an inlet; 14. a spray assembly; 15. a pressure gauge; 16. a flow meter; 17. a return line.
As shown in fig. 1: the utility model provides an utilize crude gas edulcoration device of waste water washing, including waste water buffer tank 1 and washing unit, waste water buffer tank 1's model is F613BD301, waste water import 9 and waste water pipeline 8 intercommunication of waste water pipeline 8, the other end and the water tower intercommunication that low temperature methanol washing device produced waste water, waste water buffer tank 1 top's inflation inlet 12 and gas outlet 11 communicate with nitrogen pipe net respectively, waste water export 10 of waste water buffer tank 1 has first waste water flushing pump 3 and second waste water flushing pump 4 through pipeline intercommunication respectively, the model of first waste water flushing pump 3 and second waste water flushing pump 4 is J613BD21 respectively, be provided with the stop valve on the pipeline that is close to first waste water flushing pump 3 import and second waste water flushing pump 4 import respectively, the intercommunication has backflow pipeline 17 between pipeline and the waste water pipeline 8 that first waste water flushing pump 3 export and second waste water flushing pump 4 export are connected, be provided with the ball valve on the backflow pipeline 17 that is close to waste water pipeline 8 one side.
The flushing unit comprises a heat exchanger 2 and a spraying assembly 14, the model of the heat exchanger 2 is C61351, the outlet of the first waste water flushing pump 3 and the outlet of the second waste water flushing pump 4 are both communicated with a flushing inlet 13 of the heat exchanger 2, and a pressure gauge 15 and a flow meter 16 are arranged on a pipeline connected between the first waste water flushing pump 3 and the second waste water flushing pump 4 and the heat exchanger 2; the spray assembly 14 is fixedly connected in the heat exchanger 2 and is communicated with a pipeline at the flushing inlet 13, the raw gas inlet 5 of the heat exchanger 2 is communicated with a gas making workshop through the pipeline, and the sewage outlet 6 and the air outlet 7 of the heat exchanger 2 are respectively communicated with a gas water pipe network and a low-temperature methanol washing device.
The implementation manner of this example is as follows: in the use process of the device, waste water generated by the low-temperature methanol washing device flows into a waste water pipeline 8, and enters the waste water buffer tank 1 from a waste water inlet 9 of the waste water buffer tank 1, a stop valve at the inlet of the first waste water flushing pump 3 is opened, a stop valve at the inlet of the second waste water flushing pump 4 is closed, the first waste water flushing pump 3 is started, and waste water in the waste water buffer tank 1 is pressurized to 3.4MPA through the first waste water flushing pump 3 and pumped into the heat exchanger 2.
Raw gas in a gas making workshop enters the heat exchanger 2 from a raw gas inlet 5 of the heat exchanger 2 through a pipeline, waste water flows into the heat exchanger 2 from a flushing inlet 13 of the heat exchanger 2, the raw gas is cooled and decontaminated through a spraying assembly 14, particles such as coal dust and ammonia nitrogen substances in the raw gas are flushed by the waste water, cooled raw gas is discharged from an exhaust port 7 of the heat exchanger 2 and conveyed into a low-temperature methanol washing device through the pipeline, and solid-liquid waste is discharged from a sewage outlet 6 of the heat exchanger 2 and enters a gas water pipe network.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (7)
1. The utility model provides an utilize waste water to wash crude gas edulcoration device, its characterized in that includes waste water buffer tank (1) and is used for carrying out the washing unit of cooling and edulcoration to crude gas, the washing unit includes heat exchanger (2) and spray subassembly (14), spray subassembly (14) are connected in heat exchanger (2), waste water import (9) and waste water pipeline (8) intercommunication of waste water buffer tank (1), waste water export (10) intercommunication of waste water buffer tank (1) has first waste water washing pump (3), the export of first waste water washing pump (3) is connected and is communicated with spray subassembly (14) through pipeline and the washing import (13) of heat exchanger (2), crude gas import (5) and the gas making workshop intercommunication of heat exchanger (2), drain (6) and gas vent (7) are respectively with gas water pipe network and low temperature methanol washing device intercommunication.
2. A raw gas impurity removing device utilizing waste water flushing according to claim 1, characterized in that a flow meter (16) is arranged on the line between the first waste water flushing pump (3) and the flushing inlet (13) of the heat exchanger (2).
3. The raw gas impurity removing device utilizing waste water flushing according to claim 2, wherein a waste water outlet (10) of the waste water buffer tank (1) is connected with a second waste water flushing pump (4), an outlet of the second waste water flushing pump (4) is connected with a flushing inlet (13) of the heat exchanger (2) and is communicated with the spraying assembly (14), and one sides of the first waste water flushing pump (3) and the second waste water flushing pump (4) close to the waste water buffer tank (1) are respectively provided with a stop valve.
4. A raw gas impurity removing device utilizing waste water flushing according to claim 3, characterized in that the outlets of the first waste water flushing pump (3) and the second waste water flushing pump (4) are communicated with a return line (17), and the return line (17) is communicated with a waste water line (8).
5. A raw gas impurity removing device utilizing waste water flushing according to claim 3, wherein the gas outlet (11) and the gas charging port (12) at the top of the waste water buffer tank (1) are both communicated with a nitrogen pipe network.
6. Raw gas impurity removing device using waste water flushing according to claim 4, characterized in that a pressure gauge (15) is arranged on the pipeline close to the first waste water flushing pump (3) and the second waste water flushing pump (4).
7. The raw gas impurity removing device using waste water flushing according to claim 5, wherein a ball valve is provided on a return line (17) near one side of the waste water line (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321789699.5U CN220284004U (en) | 2023-07-10 | 2023-07-10 | Crude gas impurity removing device utilizing waste water for flushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321789699.5U CN220284004U (en) | 2023-07-10 | 2023-07-10 | Crude gas impurity removing device utilizing waste water for flushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220284004U true CN220284004U (en) | 2024-01-02 |
Family
ID=89339025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321789699.5U Active CN220284004U (en) | 2023-07-10 | 2023-07-10 | Crude gas impurity removing device utilizing waste water for flushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220284004U (en) |
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2023
- 2023-07-10 CN CN202321789699.5U patent/CN220284004U/en active Active
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