CN215250669U - Feed gas purification system for hydrogen production from coke oven gas - Google Patents
Feed gas purification system for hydrogen production from coke oven gas Download PDFInfo
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- CN215250669U CN215250669U CN202121319928.8U CN202121319928U CN215250669U CN 215250669 U CN215250669 U CN 215250669U CN 202121319928 U CN202121319928 U CN 202121319928U CN 215250669 U CN215250669 U CN 215250669U
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Abstract
A raw material gas purification system for hydrogen production from coke oven gas comprises a gas adsorption purification module and a desorption and desorption hydrolysis module; the desorption and analysis hydrolysis module is connected to the gas adsorption and purification module; the gas adsorption purification system comprises a plurality of adsorption towers which are connected in parallel; the gas inlet end of the adsorption tower is connected with a raw gas pipe network, and the gas outlet end of the adsorption tower is connected with a hydrogen production system through the pipe network; the utility model discloses harmful impurity and the sulphur-containing substance among the coke oven gas are adsorbed and are got rid of to the micrite adsorption material to the process route, adsorb through high temperature analysis after saturated, and desorption gas returns to the raw coke oven gas and gets into the chemical product desulfurization workshop section and carries out the hydrogen sulfide desorption, carries out sulphur and retrieves sulphur resource, and coke oven gas hydrogen sulfide content, tar content, naphthalene content accord with the requirement of coke oven gas hydrogen manufacturing to the feed gas after this technology; meanwhile, the energy consumption can be reduced, and the sulfur resource can be recovered.
Description
Technical Field
The utility model belongs to the technical field of coke oven gas purification, in particular to a feed gas purification system for hydrogen production from coke oven gas.
Background
As an important byproduct in the coking industry, the coke oven gas is rich in hydrogen, methane, carbon monoxide and the like, belongs to a high-quality chemical raw material, and the realization of deep reutilization of the coke oven gas is an effective way for improving the economic benefits of various coking enterprises.
The coke oven gas is reasonably utilized, so that the environment hazard caused by toxic and harmful gases such as hydrogen sulfide, carbon monoxide, ammonia gas and the like in the processes of emission and combustion can be avoided, and the social benefits of energy conservation and environmental protection can be achieved. The existing dry desulphurization device avoids the problems of temperature rise, large bed pressure drop, long service life of the catalyst which is far lower than the designed value, the need of stopping and replacing the catalyst, high operation cost and unstable operation effect of the first-stage hydrogenation reactor in the existing coke oven gas dry fine desulphurization.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a raw material gas purification system for hydrogen production from coke oven gas, which solves the problems.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a raw material gas purification system for hydrogen production from coke oven gas comprises a gas adsorption purification module and a desorption and desorption hydrolysis module; the desorption and analysis hydrolysis module is connected to the gas adsorption and purification module;
the gas adsorption purification system comprises a plurality of adsorption towers which are connected in parallel; the gas inlet end of the adsorption tower is connected with a raw gas pipe network, and the gas outlet end of the adsorption tower is connected with a hydrogen production system through the pipe network;
the desorption and desorption hydrolysis module comprises a desorption fan and a desorption heat exchanger; the entry and the adsorption tower export pipe network of desorption fan are connected, and the export and the desorption heat exchanger entry linkage of desorption fan, desorption heat exchanger export and the desorption gas access connection of adsorption tower.
Further, a desorption gas outlet of the adsorption tower is connected with a chemical product removal initial cooling unit.
Furthermore, a raw material gas buffer tank is arranged between the gas outlet end of the adsorption tower and the hydrogen production system.
Furthermore, the number of the adsorption towers is five.
Further, the outlet of the desorption heat exchanger is connected with the desorption gas inlet of the adsorption tower.
Furthermore, each adsorption tower is filled with an adsorbent.
Furthermore, one end of the desorption heat exchanger is connected with high-temperature steam, and the other end of the desorption heat exchanger is connected with steam condensate water.
Furthermore, all the outlets and inlets of the adsorption tower are provided with valves.
Compared with the prior art, the utility model discloses there is following technological effect:
the utility model can directly remove tar, washing oil, hydrogen sulfide, organic sulfur, ammonia, cyanide, naphthalene and other substances in the coke oven gas. Wherein, the desulfurization workshop section mainly relies on the adsorption material, carries out the high temperature analysis when adsorption material adsorbs to reach the saturation, and the analysis process carries out the hydrolysis of organic sulphur and produces the hydrogen sulfide, and desorption gas gets back to the raw coke oven gas and carries out hydrogen sulfide's removal again, carries out sulphur resource recovery. The coal gas is circularly treated, no secondary pollutant is generated, in the process, a proper catalyst is added into a microcrystal adsorption material, organic sulfur is cracked and converted into hydrogen sulfide by utilizing high temperature during regeneration, and the hydrogen sulfide is removed through crude gas desulfurization, so that the removal rate of the organic sulfur is improved, the sulfur content of the coke oven gas is greatly reduced, and the requirements of the hydrogen production process of the coke oven gas on the hydrogen sulfide content, the tar content and the naphthalene content in the raw material gas are met.
The utility model discloses harmful impurity and the sulphur-containing substance among the coke oven gas are adsorbed and are got rid of to the micrite adsorption material to the process route, adsorb through high temperature analysis after saturated, and desorption gas returns to the raw coke oven gas and gets into the chemical product desulfurization workshop section and carries out the hydrogen sulfide desorption, carries out sulphur and retrieves sulphur resource, and coke oven gas hydrogen sulfide content, tar content, naphthalene content accord with the requirement of coke oven gas hydrogen manufacturing to the feed gas after this technology; meanwhile, the energy consumption can be reduced, and the sulfur resource can be recovered.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein: 1. 1# adsorption tower; 2. 2# adsorption column; 3. 3# adsorption tower; 4. 4# adsorption column; 5. 5# adsorption column; 6. analyzing the fan; 7. a desorption heat exchanger; 8. a raw material gas buffer tank 9 and a hydrogen production system; 10. and removing a chemical production initial cooling unit.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
a raw material gas purification device for hydrogen production from coke oven gas comprises a gas adsorption purification system and a desorption hydrolysis system;
the gas adsorption purification system comprises a No. 1 adsorption tower, a No. 2 adsorption tower, a No. 3 adsorption tower, a No. 4 adsorption tower and a No. 5 adsorption tower, wherein adsorbents are filled in the adsorption towers; the gas inlet end of the adsorption tower is connected with a raw gas pipe network, and the gas outlet end of the adsorption tower is connected with a raw gas buffer tank through the pipe network for buffering and then is subjected to compression, pressure swing adsorption and purification to produce hydrogen. The desorption and desorption hydrolysis system comprises a desorption fan and a desorption heat exchanger. The inlet of desorption fan is connected with the gas pipe network after purifying, and the export of desorption fan and desorption heat exchanger entry linkage, desorption heat exchanger export and the desorption gas access connection of adsorption tower, and the export of desorption gas is joined the back and is gone through the initial cooling unit of pipeline removal chemical product and carry out desorption of hydrogen sulfide and the recovery of sulphur resource.
The air inlet ends of the No. 1 adsorption tower, the No. 2 adsorption tower, the No. 3 adsorption tower, the No. 4 adsorption tower and the No. 5 adsorption tower are connected with a raw gas pipe network.
The gas outlet ends of the No. 1 adsorption tower, the No. 2 adsorption tower, the No. 3 adsorption tower, the No. 4 adsorption tower and the No. 5 adsorption tower are connected with a fine gas pipe network.
The adsorption towers are operated in parallel, four adsorbers are operated each time, and one adsorber is used for desorption.
The inlet of the analysis fan is connected with a clean gas pipe network.
The outlet of the analysis fan is connected with the inlet of the heat exchanger.
The outlet of the heat exchanger is connected with the desorption gas inlet of the adsorption tower.
The desorption gas outlet of the adsorption tower is connected through a pipeline to a chemical product primary cooling unit.
The clean gas pipe network is connected with the raw gas buffer tank.
The raw material gas buffer tank is connected with the hydrogen production process of the coke oven gas to produce hydrogen.
The utility model provides a raw material gas purification device for hydrogen production by coke oven gas.
As shown in fig. 1;
the method comprises the steps that an adsorption tower is connected with a raw gas pipeline and a clean gas pipeline through pipelines, desorption gas is the clean gas after being heated to a certain temperature and is connected with a desorption gas inlet and a desorption gas outlet of the adsorption tower through pipelines, and the desorbed gas enters a chemical product primary cooling unit for sulfur recovery.
The purified gas is used as raw material gas, and is buffered by a buffer tank and then subjected to compression, pressure swing adsorption and purification to produce hydrogen.
The utility model discloses a theory of operation is:
desulfurization mainly depends on microcrystal adsorption materials, high-temperature desorption is carried out when the microcrystal adsorption materials are saturated, organic sulfur is hydrolyzed in the desorption process to generate hydrogen sulfide, desorption gas returns to raw gas and then hydrogen sulfide is removed, sulfur resource recovery is carried out, the gas is circularly treated, secondary pollutants are not generated any more, a proper catalyst is added into the microcrystal adsorption materials in the process, organic sulfur is cracked and converted into hydrogen sulfide by using high temperature in regeneration, the hydrogen sulfide is removed through the desulfurization of the raw gas, the removal rate of the organic sulfur is improved, the sulfur content of the coke oven gas is greatly reduced, and the hydrogen sulfide content of the coke oven gas is ensured to be less than or equal to 5mg/Nm3The tar content is less than or equal to 5mg/Nm3Naphthalene content less than or equal to 50mg/Nm3And meets the requirement of coke oven gas hydrogen production on raw material gas.
The utility model discloses a feed gas purification device for hydrogen production from coke oven gas, which adopts microcrystal adsorption material pair in the process routeHarmful impurities and sulfur-containing substances in the coke oven gas are adsorbed and removed, after adsorption saturation, desorption gas is returned to raw gas through high-temperature desorption and enters a chemical production desulfurization working section to carry out hydrogen sulfide to sulfur recovery resources, and the content of the hydrogen sulfide in the coke oven gas is less than or equal to 5mg/Nm through the process3The tar content is less than or equal to 5mg/Nm3Naphthalene content less than or equal to 50mg/Nm3Meanwhile, the energy consumption can be reduced, and the sulfur resource can be recovered.
Claims (8)
1. A raw material gas purification system for hydrogen production from coke oven gas is characterized by comprising a gas adsorption purification module and a desorption hydrolysis module; the desorption and analysis hydrolysis module is connected to the gas adsorption and purification module;
the gas adsorption purification system comprises a plurality of adsorption towers which are connected in parallel; the gas inlet end of the adsorption tower is connected with a raw gas pipe network, and the gas outlet end of the adsorption tower is connected with a hydrogen production system (9) through the pipe network;
the desorption, analysis and hydrolysis module comprises a desorption fan (6) and a desorption heat exchanger (7); the inlet of the desorption fan is connected with the outlet pipe network of the adsorption tower, the outlet of the desorption fan (6) is connected with the inlet of the desorption heat exchanger (7), and the outlet of the desorption heat exchanger is connected with the desorption gas inlet of the adsorption tower.
2. The raw material gas purification system for hydrogen production from coke oven gas as claimed in claim 1, wherein the desorption gas outlet of the adsorption tower is connected with a chemical product removal primary cooling unit.
3. The raw material gas purification system for hydrogen production by coke oven gas as claimed in claim 1, wherein a raw material gas buffer tank (8) is further arranged between the gas outlet end of the adsorption tower and the hydrogen production system.
4. The raw material gas purification system for hydrogen production from coke oven gas as claimed in claim 1, wherein the number of the adsorption towers is five.
5. The raw material gas purification system for hydrogen production from coke oven gas as claimed in claim 1, wherein the outlet of the desorption heat exchanger (7) is connected with the desorption gas inlet of the adsorption tower.
6. The raw material gas purification system for hydrogen production by coke oven gas as claimed in claim 1, wherein each adsorption tower is filled with an adsorbent.
7. The raw material gas purification system for hydrogen production by coke oven gas as claimed in claim 1, wherein one end of the desorption heat exchanger (7) is connected with high temperature steam, and the other end is connected with steam condensate.
8. The raw material gas purification system for hydrogen production by coke oven gas as claimed in claim 1, wherein all outlets and inlets of the adsorption tower are provided with valves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121319928.8U CN215250669U (en) | 2021-06-11 | 2021-06-11 | Feed gas purification system for hydrogen production from coke oven gas |
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| CN202121319928.8U CN215250669U (en) | 2021-06-11 | 2021-06-11 | Feed gas purification system for hydrogen production from coke oven gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561232A (en) * | 2022-03-10 | 2022-05-31 | 马鞍山钢铁股份有限公司 | Blast furnace gas fine desulfurization system and method |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561232A (en) * | 2022-03-10 | 2022-05-31 | 马鞍山钢铁股份有限公司 | Blast furnace gas fine desulfurization system and method |
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Address after: Room 604, 6 / F, block B, Zhonggang international, one side of Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province, 710016 Patentee after: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. Address before: Room 604, 6 / F, block B, Zhonggang international, one side of Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province, 710016 Patentee before: Shaanxi Yuteng Energy Environmental Protection Technology Co.,Ltd. |
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Address after: 710018 room 604, floor 6, Zhonggang International Building B, Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee after: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. Address before: Room 604, 6 / F, block B, Zhonggang international, one side of Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province, 710016 Patentee before: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. |