CN217220916U - Low-grade fuel gas ammonia removal recovery processing device - Google Patents
Low-grade fuel gas ammonia removal recovery processing device Download PDFInfo
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- CN217220916U CN217220916U CN202220773999.3U CN202220773999U CN217220916U CN 217220916 U CN217220916 U CN 217220916U CN 202220773999 U CN202220773999 U CN 202220773999U CN 217220916 U CN217220916 U CN 217220916U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a low-grade fuel gas ammonia removal recovery processing device, which comprises a membrane contactor, an absorption liquid storage tank and a gas washing tower; the membrane contactor is provided with a gas inlet, a gas outlet, an absorption liquid inlet and an absorption liquid outlet, the gas inlet of the membrane contactor is connected with a gas inlet pipeline, the absorption liquid inlet of the membrane contactor is connected with an absorption liquid storage tank through a liquid inlet pipeline, and the gas outlet of the membrane contactor is connected with a gas washing tower through a gas outlet pipeline; in the membrane contactor, ammonia in ammonia-containing gas enters absorption liquid, and the gas after ammonia removal is output through a gas outlet of the membrane contactor; the bottom of the gas washing tower is provided with a water tank, the upper part of the gas washing tower is provided with a spraying device, and the water tank is connected with the spraying device in the gas washing tower through a washing circulating pump. The device can effectively get rid of the ammonia in the waste gas, makes waste gas reach the boiler and to the requirement of admitting air of gas for waste gas can carry out recycle as the gas, has realized the energy-concerving and environment-protective processing of waste gas.
Description
Technical Field
The utility model relates to a waste gas treatment technical field, concretely relates to low-grade gas removes ammonia recovery processing device.
Background
The industrial waste gas generally contains components such as hydrogen, nitrogen, ammonia and the like; in the prior art, industrial waste gas is generally directly discharged by a combustion method, which causes great waste of useful energy in the waste gas; therefore, the industrial waste gas needs to be recovered as fuel gas; however, if the waste gas is directly combusted as a fuel gas, the ammonia gas in the waste gas can inhibit the combustion process, and a large amount of nitrogen oxides are easily generated in the combustion process, so that the environment is polluted greatly, and meanwhile, ammonium salt is generated during combustion and can cause the blockage of a combustion boiler hearth.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide a low-grade fuel gas ammonia removal recovery processing device; the device can effectively get rid of the ammonia in the waste gas, makes waste gas reach the boiler and to the requirement of admitting air of gas for waste gas can carry out recycle as the gas, has realized the energy-concerving and environment-protective processing of waste gas.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a following technical scheme realizes:
a low-grade fuel gas ammonia removal recovery processing device comprises a membrane contactor, an absorption liquid storage tank and a gas washing tower; the membrane contactor is provided with a gas inlet, a gas outlet, an absorption liquid inlet and an absorption liquid outlet, wherein the gas inlet of the membrane contactor is connected with a gas inlet pipeline for introducing ammonia-containing gas, the absorption liquid inlet of the membrane contactor is connected with the absorption liquid storage tank through a liquid inlet pipeline, and the gas outlet of the membrane contactor is connected with the gas washing tower through a gas outlet pipeline; in the membrane contactor, ammonia in ammonia-containing gas enters absorption liquid, and the gas after ammonia removal is output through a gas outlet of the membrane contactor; the bottom of the gas washing tower is provided with a water tank, the upper part of the gas washing tower is provided with a spraying device, and the water tank is connected with the spraying device in the gas washing tower through a washing circulating pump.
Further, be equipped with gas compressor on the inlet line to the gas that contains ammonia carries out the pressure boost, promotes gas pressure, makes gas reach membrane contactor's the requirement of admitting air.
Further, the pressure of the pressurized ammonia-containing gas was 30 kPa.
Further, still be equipped with gas filter on the intake stack to impurity in the removal gas prevents to block up the hollow fiber membrane silk of membrane contactor.
Furthermore, the membrane contactor is provided with a tube pass and a shell pass, a gas inlet of the membrane contactor is connected with the upstream end of the shell pass, a gas outlet of the membrane contactor is connected with the downstream end of the shell pass, an absorption liquid inlet of the membrane contactor is connected with the upstream end of the tube pass, and an absorption liquid outlet of the membrane contactor is connected with the downstream end of the tube pass.
Furthermore, an absorption liquid booster pump is further arranged on the liquid inlet pipeline, so that the absorption liquid meets the liquid inlet requirement of the membrane contactor.
Furthermore, an absorption liquid outlet of the membrane contactor is connected with the absorption liquid storage tank through a liquid outlet pipeline.
Further, the absorption liquid stored in the absorption liquid storage tank is an acid absorption liquid, preferably a 30% dilute sulfuric acid solution.
Further, the gas-liquid ratio of the membrane contactor is less than 10000: 1.
Furthermore, a packing layer positioned below the spraying device is arranged in the gas washing tower.
The utility model has the advantages that:
the utility model discloses utilize the ammonia in membrane contactor messenger waste gas to be absorbed by the absorption liquid, with effectively getting rid of the ammonia in the waste gas, and utilize the gas scrubbing tower to wash the waste gas of desorption ammonia, with the acid mist that contains in getting rid of the waste gas, make the waste gas after the processing reach the boiler and to the requirement that admits air of gas, avoid waste gas burning to produce the nitrogen oxide pollutant, also can avoid the combustion process to produce the ammonium salt that blocks up combustion boiler easily, realize the recycle to waste gas, reach energy-concerving and environment-protective purpose.
The utility model discloses a recovery processing device safe and reliable, area is less, and manufacturing cost is lower, is suitable for popularization and application.
Drawings
Fig. 1 is a schematic diagram of the low-grade fuel gas ammonia removal recovery processing device of the utility model.
Detailed Description
The following detailed description of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
The preferred embodiment of the low-grade fuel gas ammonia removal recovery processing device shown in fig. 1 comprises a membrane contactor 1, an absorption liquid storage tank 2 and a gas washing tower 3; the membrane contactor 1 has a gas inlet, a gas outlet, an absorption liquid inlet, and an absorption liquid outlet. The membrane contactor 1 structurally comprises a shell and hollow fiber membrane filaments positioned in the shell, and a tube pass and a shell pass are formed; the tube pass is specifically a hollow fiber membrane filament inner cavity, and the shell pass is specifically a membrane contactor shell inner cavity. A gas inlet of the membrane contactor 1 is connected with the upstream end of the shell pass, a gas outlet of the membrane contactor 1 is connected with the downstream end of the shell pass, an absorption liquid inlet of the membrane contactor 1 is connected with the upstream end of the tube pass, and an absorption liquid outlet of the membrane contactor 1 is connected with the downstream end of the tube pass; a gas inlet of the membrane contactor 1 is connected with an air inlet pipeline 4 for introducing ammonia-containing gas, an absorption liquid inlet of the membrane contactor 1 is connected with the absorption liquid storage tank 2 through a liquid inlet pipeline 5, and a gas outlet of the membrane contactor 1 is connected with the gas washing tower 3 through a gas outlet pipeline 6; and an absorption liquid outlet of the membrane contactor 1 is connected with the absorption liquid storage tank 2 through a liquid outlet pipeline 7. In the membrane contactor 1, ammonia gas in the ammonia-containing gas enters the absorption liquid, and the gas from which ammonia is removed is output through the gas outlet of the membrane contactor 1. A water tank 301 is arranged at the bottom of the gas washing tower 3, a spraying device 302 is arranged at the upper part of the gas washing tower 3, and the water tank is connected with the spraying device 302 in the gas washing tower 3 through a washing circulating pump 8; the gas scrubber 3 is also provided with a packing layer below the spraying device 302.
The air inlet pipeline 4 is provided with an air compressor 9 to pressurize the ammonia-containing gas and increase the pressure of the gas so that the gas meets the air inlet requirement of the membrane contactor 1; the pressure of the pressurized ammonia-containing gas was 30 kPa.
The gas inlet pipe 4 is further provided with a gas filter 10 to remove impurities in the gas and prevent the hollow fiber membrane filaments of the membrane contactor 1 from being clogged.
The liquid inlet pipeline 5 is also provided with an absorption liquid booster pump 11 so that the absorption liquid meets the liquid inlet requirement of the membrane contactor 1.
The absorption liquid stored in the absorption liquid storage tank 2 is acid absorption liquid; in this example, the acid absorption solution is a 30% dilute sulfuric acid solution.
In the utility model, the gas-liquid ratio of the membrane contactor 1 is less than 10000: 1; the gas-liquid ratio of the waste gas to the cleaning water in the gas scrubber 3 is less than 2000: 1.
The treatment process of the low-grade fuel gas ammonia removal and recovery treatment device is as follows:
the low-grade fuel gas to be treated comprises 49-64% of hydrogen, 16-21% of nitrogen, 0-20% of methane and 15-35% of ammonia. The low-grade fuel gas is subjected to gas pressurization through a gas compressor 9, the gas pressure is increased to 30kPa, then the gas is filtered through a gas filter 10 to remove impurities in the gas and prevent the impurities from blocking membrane filaments after entering a membrane contactor 1; in the membrane contactor 1, ammonia-containing gas flows outside the hollow fiber membrane filaments of the membrane contactor 1 (the shell side of the membrane contactor); acid absorption liquid is pumped into hollow fiber membrane filaments of the membrane contactor 1 (tube pass of the membrane contactor) through an absorption liquid booster pump 11; ammonia in the gas is absorbed into the acid absorption liquid through the micropores on the hollow fiber membrane filaments; ammonia and dilute sulfuric acid generate ammonium sulfate, and the ammonium sulfate enters the absorption liquid storage tank 2 along with the acid absorption liquid through the liquid outlet pipeline 7; the gas treated by the membrane contactor 1 is output through a gas outlet of the membrane contactor; the gas output from the gas outlet of the membrane contactor 1 may have a small amount of acid mist, which easily corrodes the boiler when the exhaust gas is burned, and thus the gas needs to be washed to remove the acid mist therefrom. Gas enters the gas washing tower 3 through the gas outlet pipeline 6; the washing circulating pump 8 pumps the washing water in the gas washing tower 3 into the spraying device 302, and the spraying device 302 sprays the washing water to wash the gas; the packing layer in the gas washing tower 3 can increase the contact area between the cleaning water and the gas and improve the washing effect; after cleaning, the acid mist content in the gas is less than 1 ppm. The washed waste gas meets the air inlet requirement of the boiler and can be used as fuel gas to enter the boiler for combustion.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a low-grade gas removes ammonia recovery processing device which characterized in that: comprises a membrane contactor, an absorption liquid storage tank and a gas washing tower; the membrane contactor is provided with a gas inlet, a gas outlet, an absorption liquid inlet and an absorption liquid outlet, wherein the gas inlet of the membrane contactor is connected with a gas inlet pipeline for introducing ammonia-containing gas, the absorption liquid inlet of the membrane contactor is connected with the absorption liquid storage tank through a liquid inlet pipeline, and the gas outlet of the membrane contactor is connected with the gas washing tower through a gas outlet pipeline; in the membrane contactor, ammonia in ammonia-containing gas enters absorption liquid, and the gas after ammonia removal is output through a gas outlet of the membrane contactor; the bottom of the gas washing tower is provided with a water tank, the upper part of the gas washing tower is provided with a spraying device, and the water tank is connected with the spraying device in the gas washing tower through a washing circulating pump.
2. The low-grade fuel gas ammonia removal recovery processing device according to claim 1, characterized in that: and a gas compressor is arranged on the gas inlet pipeline to pressurize the ammonia-containing gas.
3. The low-grade fuel gas ammonia removal recovery processing device according to claim 2, characterized in that: the pressure of the pressurized ammonia-containing gas was 30 kPa.
4. The low-grade fuel gas ammonia removal recovery processing device according to claim 1 or 2, characterized in that: and the air inlet pipeline is also provided with an air filter.
5. The low-grade fuel gas ammonia removal recovery processing device according to claim 1, characterized in that: the membrane contactor is provided with a tube pass and a shell pass, a gas inlet of the membrane contactor is connected with the upstream end of the shell pass, a gas outlet of the membrane contactor is connected with the downstream end of the shell pass, an absorption liquid inlet of the membrane contactor is connected with the upstream end of the tube pass, and an absorption liquid outlet of the membrane contactor is connected with the downstream end of the tube pass.
6. The low-grade fuel gas ammonia removal recovery processing device according to claim 1, characterized in that: and the liquid inlet pipeline is also provided with an absorption liquid booster pump.
7. The low-grade fuel gas ammonia removal recovery processing device according to claim 1, characterized in that: and an absorption liquid outlet of the membrane contactor is connected with the absorption liquid storage tank through a liquid outlet pipeline.
8. The low-grade fuel gas ammonia removal recovery processing device according to claim 1, characterized in that: and the absorption liquid stored in the absorption liquid storage tank is acid absorption liquid.
9. The low-grade fuel gas ammonia removal recovery processing device according to claim 1, characterized in that: the gas-liquid ratio of the membrane contactor is less than 10000: 1.
10. The low-grade fuel gas ammonia removal recovery processing device according to claim 1, characterized in that: and a packing layer positioned below the spraying device is arranged in the gas washing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220773999.3U CN217220916U (en) | 2022-04-06 | 2022-04-06 | Low-grade fuel gas ammonia removal recovery processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220773999.3U CN217220916U (en) | 2022-04-06 | 2022-04-06 | Low-grade fuel gas ammonia removal recovery processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217220916U true CN217220916U (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220773999.3U Active CN217220916U (en) | 2022-04-06 | 2022-04-06 | Low-grade fuel gas ammonia removal recovery processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217220916U (en) |
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2022
- 2022-04-06 CN CN202220773999.3U patent/CN217220916U/en active Active
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