CN112279216A - Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas - Google Patents
Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas Download PDFInfo
- Publication number
- CN112279216A CN112279216A CN202011276162.XA CN202011276162A CN112279216A CN 112279216 A CN112279216 A CN 112279216A CN 202011276162 A CN202011276162 A CN 202011276162A CN 112279216 A CN112279216 A CN 112279216A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- purge gas
- fuel cell
- tower
- membrane separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/501—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion
- C01B3/503—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion characterised by the membrane
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
Abstract
The invention discloses a device and a process for preparing hydrogen for a fuel cell by using synthetic ammonia purge gas, wherein the device comprises a buffer tank, a material outlet of the buffer tank is communicated with a material inlet of a washing tower, a material outlet of the washing tower is communicated with a material inlet of a dryer, a material outlet of the dryer is communicated with a material inlet of a membrane separator, a material outlet of the membrane separator is communicated with a material inlet of an adsorption tower, a material outlet of the adsorption tower is communicated with a material inlet of a high-efficiency desulfurizing tower, and a material outlet of the high-efficiency desulfurizing tower is communicated with a hydrogen storage tank. The process comprises the steps of buffering, washing, drying, membrane separation, pressure swing adsorption and high-efficiency desulfurization. The device and the process for preparing the hydrogen for the fuel cell by using the synthetic ammonia purge gas can promote and realize the large-scale production of the fuel cell grade hydrogen, improve the utilization rate of the synthetic ammonia purge gas and realize the purposes of saving, high efficiency and comprehensive application.
Description
Technical Field
The invention belongs to the technical field of hydrogen preparation, and particularly relates to a device and a process for preparing hydrogen for a fuel cell by using synthetic ammonia purge gas.
Background
Hydrogen energy is a recognized clean energy in the world, and the development strategy of the hydrogen energy industry is actively distributed in main countries in the world. In recent years, the guidance and support of the policy on the development of the hydrogen energy industry are continuously increased in China, and the hydrogen energy industry enters the hydrogen energy original year in 2018 as a strategic emerging industry. In order to accelerate the development of the hydrogen energy industry, the blue book for development of the infrastructure of the hydrogen energy industry in China, compiled by the institute of standardization in China and the technical committee of standardization in hydrogen energy, is published in 2018, and the white book for the hydrogen energy and fuel cell industry in China, compiled by the hydrogen energy alliance in China, is published in 2019; the white paper indicates that hydrogen energy becomes an important component of the Chinese energy system, and the hydrogen energy accounts for about 10% in the terminal energy system of China and the hydrogen demand is close to 6000 million by 2050, wherein 2458 million of hydrogen is used in the field of transportation, and hydrogen stations in China reach more than 10000, so that the hydrogen energy can be popularized and applied in the fields of transportation, industry and the like.
The hydrogen energy industry comprises three main links of hydrogen preparation, hydrogen storage and transportation and hydrogen utilization, wherein the hydrogen preparation is positioned at the upstream of the whole hydrogen energy industry chain and is the basis of the hydrogen energy industry. The main ways for preparing the hydrogen for the fuel cell include petrochemical energy reforming hydrogen production, industrial by-product hydrogen purification hydrogen production, water electrolysis hydrogen production and the like, wherein the industrial by-product hydrogen has huge yield in the fields of chemical industry, steel, petrochemical industry and the like, and comprises various hydrogen-rich exhaust gases such as coke oven gas, synthetic ammonia purge gas, methanol purge gas, chlor-alkali industry by-product hydrogen, refinery by-product industrial hydrogen and the like.
The industrial by-product hydrogen purification hydrogen production has the advantages of wide hydrogen source, low cost, suitability for large-scale production and the defects of more gas impurities and difficult removal and purification. Therefore, the device for preparing the hydrogen for the fuel cell by purifying step by using the purge gas/recycle gas of the synthetic ammonia as a hydrogen source can be developed, and the optimization and the upgrade of the energy supply structure of the enterprise can be realized.
Disclosure of Invention
The invention aims to provide a device and a process for preparing hydrogen for a fuel cell by using synthetic ammonia purge gas, which can promote and realize large-scale production of fuel cell grade hydrogen, improve the utilization rate of the synthetic ammonia purge gas and realize the purposes of saving, high efficiency and comprehensive application.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an utilize synthetic ammonia to relax device of gassing preparation hydrogen for fuel cell, includes the buffer tank, the material export of buffer tank intercommunication scrubbing tower material import, the material export of scrubbing tower intercommunication desicator material import, the material export of desicator intercommunication membrane separator material import, the material export of membrane separator intercommunication adsorption tower material import, the material export of adsorption tower intercommunication high-efficient desulfurizing tower material import, the material export of high-efficient desulfurizing tower intercommunication hydrogen storage tank.
Further, the dryer is an automatic cycle regeneration adsorption dryer.
Furthermore, the membrane separator is also provided with an impurity gas outlet of the membrane separator, and the impurity gas outlet of the membrane separator is communicated with a boiler system.
Further, the number of the membrane separators is 4-6, and the number of the adsorption towers is 4-10.
Further, a gas detection device is arranged at a material outlet of the adsorption tower.
Further, the membrane separator is connected with the membrane separator in a series-parallel combination mode.
A process for preparing hydrogen for a fuel cell using ammonia synthesis purge gas, comprising the steps of:
(1) the synthetic ammonia purge gas is buffered and depressurized by a buffer tank, washed by soft water in a washing tower and then dried in a dryer;
(2) purifying the gas dried in the step (1) in a membrane separator, and then sending the gas into an adsorption tower for cyclic pressure swing adsorption;
(3) and (3) enabling the gas subjected to the cyclic pressure swing adsorption in the step (2) to enter a high-efficiency desulfurizing tower for desulfurization to obtain hydrogen.
Further, in the step (1), the buffer tank buffers and reduces the pressure to 0.8-3 MPa.
Further, the number of the membrane separators in the step (2) is 4-6, and the membrane separators are connected with one another in a series-parallel combination mode.
The invention has the advantages that:
the buffer tank (1) can buffer and depressurize the purge gas of the synthetic ammonia, is beneficial to removing impurity gas subsequently, increases the elastic operation of load and ensures the continuous and stable operation of the process.
(2) The washing tower can be convenient for thoroughly washing and removing part of ammonia in the gas, the service lives of the membrane separator and the adsorption tower in the post-process are prolonged, and the waste of ammonia is avoided for ammonia recovery.
(3) The dryer can meet the dew point requirement of fuel hydrogen, thoroughly dries the gas, can avoid the influence of vapor brought into post-processing on the adsorbent of membrane separation and pressure swing adsorption, and prolongs the service life of the separation membrane and the adsorbent.
(4) The membrane separator can firstly effectively remove high-content nitrogen and methane, thereby achieving the purposes of purifying hydrogen and improving the purity of hydrogen; and secondly, the membrane separator can realize bearing the influence of pressure drop of gas and partial pressure change of the gas while removing impurities, thereby realizing pressure balance before pressure swing adsorption and simultaneously improving the effect of pressure swing adsorption.
(5) The adsorption tower realizes the trace removal of methane, nitrogen, helium and the like in the hydrogen through the professional design of the adsorption bed layer and the screening of the adsorbent, so that the impurity gas in the hydrogen reaches the standard for the fuel cell, and the high-purity purification of the hydrogen is realized.
(6) The high-efficiency desulfurizing tower is arranged, the purified hydrogen is deeply desulfurized by filling the high-efficiency zinc-based desulfurizer, the temperature of a bed layer is controlled to be 400 ℃, the total sulfur content in the hydrogen is reduced to be below 4ppb, the hydrogen standard for the fuel cell is achieved, and qualified hydrogen is produced.
The device and the process for preparing the hydrogen for the fuel cell by using the synthetic ammonia purge gas can promote and realize the large-scale production of the fuel cell grade hydrogen, improve the utilization rate of the synthetic ammonia purge gas and realize the purposes of saving, high efficiency and comprehensive application.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
As shown in figure 1, the invention discloses a device for preparing hydrogen for a fuel cell by using synthetic ammonia purge gas, which comprises a buffer tank 1, wherein the top of the buffer tank 1 is provided with a safe pressure relief device, the highest point of the top of the buffer tank 1 is provided with a vent pipe, the upper part of the buffer tank 1 is provided with a pressure measuring instrument, and the lower part of the buffer tank 1 is provided with a nitrogen purging and replacing interface. The buffer tank material outlet 102 is communicated with a washing tower material inlet 201, the washing tower 2 is provided with auxiliary equipment such as a soft water tank, a water content and washing water recovery device, and corresponding pipelines are connected with each other to ensure sufficient water amount in the washing process and subsequent treatment of washing water. The washing tower material outlet 202 is communicated with a dryer material inlet 301, and the dryer 3 is an automatic cycle regeneration adsorption dryer and mainly comprises an adsorption tower, a condenser, a gas-water separator, a forced circulation fan, a control system and the like. The dryer material outlet 302 is communicated with a membrane separator material inlet 401, the membrane separator 4 is also provided with a membrane separator impurity gas outlet 402, the membrane separator impurity gas outlet 403 is communicated with the boiler system, the number of the membrane separators 4 is 5, and the membrane separators 4 are connected in a series-parallel combination mode.
The membrane separator material outlet 402 is communicated with the adsorption tower material inlet 501, the number of the adsorption towers 5 is 6, the adsorption towers 5 are filled with activated carbon adsorbents, the particle size is 4-10 meshes, the adsorption is carried out by adopting a forward pressure reduction adsorption mode, a forward buffer tank and a reverse buffer tank are arranged, and a gas detection device is arranged at the adsorption tower material outlet 502. The material outlet 502 of the absorption tower is communicated with the material inlet 601 of the high-efficiency desulfurization tower, the desulfurizer filled in the high-efficiency desulfurization tower 6 is a zinc-based high-efficiency desulfurizer, the high-temperature absorption mode is adopted, the absorption temperature is 150-. The high-efficiency desulfurizing tower material outlet 602 is communicated with the hydrogen storage tank 7.
A process for preparing hydrogen for fuel cells by using synthetic ammonia purge gas comprises the steps of buffering, washing, drying, membrane separation, pressure swing adsorption and high-efficiency desulfurization, and comprises the following specific steps:
(1) synthetic ammonia purge gas with the pressure of 12-15MPa enters a buffer tank 1 through a buffer tank material inlet 101, the pressure is reduced to 0.8-3MPa through buffering, then the synthetic ammonia purge gas enters a washing tower 2 through a washing tower material inlet 201 from a buffer tank material outlet 102, soft water is sprayed on the top of the washing tower 2 to carry out countercurrent washing and ammonia absorption, washing water in the washing tower 2 can return to a synthetic ammonia system for further treatment through a washing tower recovery device, and gas in the washing tower 2 enters a dryer 3 through a dryer material inlet 301 through a washing tower material outlet 202 for drying.
(2) The gas dried in the step (1) flows into a membrane separator material inlet 401 from a dryer material outlet 302 and enters a membrane separator 4, impurity gases such as nitrogen, methane and the like are removed in the membrane separator 4, the impurity gases can be discharged through the membrane separator 4 impurity gas outlet and sent to a boiler system for combustion, the purified gas is sent to an adsorption tower 5 through a membrane separator material outlet 402 and an adsorption tower material inlet 501, and the impurity gases such as nitrogen, methane and the like are subjected to cyclic pressure swing adsorption in the adsorption tower 5 and are deeply removed.
(3) And (3) detecting the gas subjected to cyclic pressure swing adsorption in the step (2) to be qualified through a cyclic adsorption gas detection device, enabling the gas to enter the efficient desulfurizing tower 6 from the material outlet 502 of the adsorption tower through the material inlet 601 of the efficient desulfurizing tower for desulfurization, treating the gas in the efficient desulfurizing tower 6 to reduce the sulfur content to be below 4ppb, and sending the gas to the hydrogen storage tank 7 through the material outlet 602 of the efficient desulfurizing tower to obtain qualified product hydrogen.
Claims (9)
1. An apparatus for producing hydrogen for a fuel cell using a purge gas of synthetic ammonia, characterized in that: including the buffer tank, the material export of buffer tank communicates the material import of scrubbing tower, and the material export of scrubbing tower communicates the material import of desicator, and the material export of desicator communicates the material import of membrane separator, and the material export of membrane separator communicates the material import of adsorption tower, and the material export of adsorption tower communicates the material import of high-efficient desulfurizing tower, and the material export of high-efficient desulfurizing tower communicates hydrogen storage tank.
2. The apparatus for producing hydrogen for a fuel cell using synthesis ammonia purge gas according to claim 1, characterized in that: the dryer is an automatic cycle regeneration adsorption dryer.
3. The apparatus for producing hydrogen for a fuel cell using synthesis ammonia purge gas according to claim 1, characterized in that: and the membrane separator is also provided with an impurity gas outlet of the membrane separator, and the impurity gas outlet of the membrane separator is communicated with a boiler system.
4. The apparatus for producing hydrogen for a fuel cell using synthesis ammonia purge gas according to claim 1, characterized in that: the number of the membrane separators is 4-6, and the number of the adsorption towers is 4-10.
5. The apparatus for producing hydrogen for a fuel cell using synthesis ammonia purge gas according to claim 1, characterized in that: and a gas detection device is arranged at a material outlet of the adsorption tower.
6. The apparatus for producing hydrogen for a fuel cell using synthesis ammonia purge gas according to claim 4, wherein: the membrane separator is connected with the membrane separator in a series-parallel combination mode.
7. A process for preparing hydrogen for a fuel cell by using synthetic ammonia purge gas is characterized in that: the method comprises the following steps:
(1) the synthetic ammonia purge gas is buffered and depressurized by a buffer tank, washed by soft water in a washing tower and then dried in a dryer;
(2) purifying the gas dried in the step (1) in a membrane separator, and then sending the gas into an adsorption tower for cyclic pressure swing adsorption;
(3) and (3) enabling the gas subjected to the cyclic pressure swing adsorption in the step (2) to enter a high-efficiency desulfurizing tower for desulfurization to obtain hydrogen.
8. The process for producing hydrogen for fuel cells using synthesis ammonia purge gas as claimed in claim 7, wherein: and (2) in the step (1), the buffer tank buffers and reduces the pressure to 0.8-3 MPa.
9. The process for producing hydrogen for fuel cells using synthesis ammonia purge gas as claimed in claim 7, wherein: the number of the membrane separators in the step (2) is 4-6, and the membrane separators are connected with one another in a series-parallel combination mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011276162.XA CN112279216A (en) | 2020-11-16 | 2020-11-16 | Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011276162.XA CN112279216A (en) | 2020-11-16 | 2020-11-16 | Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112279216A true CN112279216A (en) | 2021-01-29 |
Family
ID=74398416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011276162.XA Pending CN112279216A (en) | 2020-11-16 | 2020-11-16 | Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112279216A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590364A (en) * | 2009-07-07 | 2009-12-02 | 贵州赤天化股份有限公司 | Gas and synthetic ammonia purge and basin gas are carried out method and the device that hydrogen reclaims |
| EP2481705A1 (en) * | 2011-02-01 | 2012-08-01 | Griesser, Hans | Method and device for material and/or energy recovery of biogenic residual materials |
| CN103274359A (en) * | 2013-06-09 | 2013-09-04 | 大连交通大学 | Method and device for recycling hydrogen from synthesis ammonia released air and preparing LNG (liquefied natural gas) with membrane separation and cryogenic integration technology |
| CN109319736A (en) * | 2018-10-09 | 2019-02-12 | 四川金象赛瑞化工股份有限公司 | Ammonia tank periodic off-gases recyclable device and its technique |
| CN209835650U (en) * | 2019-03-27 | 2019-12-24 | 中化重庆涪陵化工有限公司 | Hydrogen-ammonia membrane recovery system for synthetic ammonia vent gas |
| CN111348623A (en) * | 2020-03-30 | 2020-06-30 | 广西精典化工新材料有限公司 | Hydrogen recovery and purification system in purge tail gas generated in preparation of formaldehyde through methanol oxidation |
-
2020
- 2020-11-16 CN CN202011276162.XA patent/CN112279216A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590364A (en) * | 2009-07-07 | 2009-12-02 | 贵州赤天化股份有限公司 | Gas and synthetic ammonia purge and basin gas are carried out method and the device that hydrogen reclaims |
| EP2481705A1 (en) * | 2011-02-01 | 2012-08-01 | Griesser, Hans | Method and device for material and/or energy recovery of biogenic residual materials |
| CN103274359A (en) * | 2013-06-09 | 2013-09-04 | 大连交通大学 | Method and device for recycling hydrogen from synthesis ammonia released air and preparing LNG (liquefied natural gas) with membrane separation and cryogenic integration technology |
| CN109319736A (en) * | 2018-10-09 | 2019-02-12 | 四川金象赛瑞化工股份有限公司 | Ammonia tank periodic off-gases recyclable device and its technique |
| CN209835650U (en) * | 2019-03-27 | 2019-12-24 | 中化重庆涪陵化工有限公司 | Hydrogen-ammonia membrane recovery system for synthetic ammonia vent gas |
| CN111348623A (en) * | 2020-03-30 | 2020-06-30 | 广西精典化工新材料有限公司 | Hydrogen recovery and purification system in purge tail gas generated in preparation of formaldehyde through methanol oxidation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106554831B (en) | Equipment and process for purifying methane and synchronously methanation-transforming carbon dioxide | |
| CN101343580A (en) | Method for preparing methanol synthesis gas with oven gas and blast furnace gas | |
| KR102430685B1 (en) | High concentration hydrogen sulfide removal device in solution bath type | |
| CN202569906U (en) | Dry gas pressure swing adsorption (PSA) ethylene-and-hydrogen recycling device in oil refinery | |
| CN111408249B (en) | Method and device for desulfurization and decarburization of flue gas by multi-section membrane absorption | |
| WO2020262779A1 (en) | Biogas purification system and method for producing clean fuel | |
| CN103205296A (en) | Wet method and dry method series-connected biogas desulfurization purifying process | |
| CN213660466U (en) | Chlor-alkali hydrogen purification coupling fuel cell stack power generation system | |
| CN214114916U (en) | Device for preparing hydrogen for fuel cell by using synthetic ammonia purge gas | |
| CN112279216A (en) | Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas | |
| CN108011119B (en) | Method and system for clean power generation and resource utilization of hydrogen-containing waste gas coupled fuel cell | |
| CN218321249U (en) | Blast furnace gas carbon capture system | |
| CN111411004A (en) | Method and device for efficiently purifying biogas by using pressure swing adsorption principle | |
| CN103316563A (en) | Desulfurization and purification device for semi-coke tail gas and usage method of same | |
| CN104098069B (en) | A kind of coal gas carries the device of hydrogen | |
| CN212327831U (en) | Environmental-friendly resourceful treatment system for fireflood tail gas | |
| CN215250669U (en) | Feed gas purification system for hydrogen production from coke oven gas | |
| CN216404319U (en) | Waste gas recovery system for separating carbon dioxide and nitrogen by utilizing flue gas | |
| CN213772106U (en) | Gas-based shaft furnace reducing gas preparation system | |
| CN213326721U (en) | Natural gas hydrogen production product purification system | |
| CN211799426U (en) | Production device for producing calcium formate by using yellow phosphorus tail gas through mixed serial-parallel method | |
| CN114604829B (en) | System and method for purifying hydrogen from coke oven gas | |
| CN210261105U (en) | Device for preparing various synthesis gases by using yellow phosphorus tail gas | |
| CN113731098A (en) | Environmental-friendly resourceful treatment system and process flow for fireflooding tail gas | |
| CN108034464B (en) | Method for preparing liquefied natural gas from semi-coke tail gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |