CN214780743U - Device of hydrogen and food grade dry ice for LNG preparation fuel cell - Google Patents
Device of hydrogen and food grade dry ice for LNG preparation fuel cell Download PDFInfo
- Publication number
- CN214780743U CN214780743U CN202022694965.9U CN202022694965U CN214780743U CN 214780743 U CN214780743 U CN 214780743U CN 202022694965 U CN202022694965 U CN 202022694965U CN 214780743 U CN214780743 U CN 214780743U
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- hydrogen
- lng
- dry ice
- natural gas
- carbon dioxide
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- 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
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/22—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds
- C01B3/24—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons
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- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
- C01B32/55—Solidifying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0043—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for fuel cells
Abstract
The utility model discloses a device of hydrogen and food level dry ice for LNG preparation fuel cell. The device comprises a carbon dioxide dry ice making unit and a natural gas conversion unit; the carbon dioxide dry ice making unit comprises an LNG heat exchanger, and the natural gas conversion unit comprises a natural gas converter, a natural gas converter and a pressure swing absorber which are sequentially connected; the LNG heat exchanger is communicated with the natural gas converter; a hydrogen-rich gas outlet of the pressure swing adsorber obtains hydrogen-rich gas meeting the hydrogen requirement for the fuel cell; and a purge gas outlet of the pressure swing adsorber is connected with a carbon dioxide purification unit, the carbon dioxide purification unit is connected with an LNG heat exchanger, and food-grade dry ice is obtained after heat exchange with LNG. The utility model discloses combine LNG gasification, hydrogen preparation, carbon dioxide purification and the dry ice technology of preparation organically, energy utilization each other, gained hydrogen can conveniently be transported and utilize, but food level's dry ice wide application in food and medicine field has good economic nature.
Description
Technical Field
The utility model relates to a device of hydrogen and food level dry ice for LNG preparation fuel cell.
Background
The global energy industry is undergoing the third energy revolution with low carbonization, no carbonization and low pollution as the direction, and with the increasing global energy demand and obvious global electrification trend, the power energy structure with the largest renewable energy growth range will be continuously changed in the future, and further diversified energy structures mainly comprising petroleum, natural gas, coal and renewable energy are formed.
The hydrogen energy is used as a clean, efficient, safe and sustainable secondary energy, can be obtained through various ways such as primary energy, secondary energy and the industrial field, can also be widely applied to industries such as industry, building, traffic and electric power, is an important carrier for constructing a multi-energy supply system mainly based on clean energy in the future, the development and utilization technology of the hydrogen energy becomes an important direction of a new round of world energy technology change, is also a strategic high point of future development of the automobile industry, the development of the hydrogen energy is beneficial to accelerating and promoting the energy production and consumption revolution of China, and has great significance for the energy transformation development of a new era.
At present, the key factor influencing the development of the hydrogen energy industry is the price of hydrogen, and the price of hydrogen determines the economy of hydrogen utilization, and further determines the economy and feasibility of the whole industry. The hydrogen energy industry comprises three main links of hydrogen production, hydrogen storage and transportation and hydrogen utilization, wherein the key for realizing the development of the hydrogen energy industry is the high-efficiency hydrogen production technology and reducing the hydrogen operation cost.
Disclosure of Invention
Problem to hydrogen liquefaction energy consumption height, liquid hydrogen manufacturing cost, the utility model provides a device of hydrogen and food level dry ice for fuel cell is prepared to LNG, the utility model discloses utilize LNG's cold energy, natural gas hydrogen manufacturing process and food level dry ice preparation combine organically, realized adopting LNG as the air supply, the high-efficient purpose of utilizing LNG cold energy to prepare high-purity hydrogen and food level dry ice. The utility model discloses make the preparation cost of hydrogen and food level dry ice reduce by a wide margin, and the hydrogen of preparation can be applied to fuel cell traffic hydrogen, but food level dry ice wide application in food and medicine field.
Specifically, the device for preparing hydrogen and food grade dry ice for the fuel cell by using LNG provided by the utility model comprises a carbon dioxide dry ice preparing unit and a natural gas conversion unit;
the carbon dioxide dry ice making unit comprises an LNG heat exchanger,
the natural gas conversion unit comprises a natural gas converter, a natural gas converter and a pressure swing absorber which are connected in sequence; the LNG heat exchanger is communicated with the natural gas converter;
a hydrogen-rich gas outlet of the pressure swing adsorber obtains a hydrogen-rich gas meeting the requirement of hydrogen used by the fuel cell, and the concentration of the hydrogen in the hydrogen-rich gas is more than 99.9 percent;
and a purge gas outlet of the pressure swing adsorber is connected with a carbon dioxide purification unit, the carbon dioxide purification unit is connected with the LNG heat exchanger, and food-grade dry ice is obtained after heat exchange with LNG.
The inlet end of the LNG heat exchanger is connected with an LNG booster pump to reduce the temperature of LNG to be boosted to 0.3-5 MPaG;
the temperature of the LNG can be raised to-20-0 ℃ after heat exchange, and the temperature of the purified carbon dioxide is reduced to-80-40 ℃.
In the natural gas conversion unit, the inlet end of the natural gas converter is connected with a combustion furnace, and natural gas can be heated to 600-1000 ℃.
The hydrogen-rich gas outlet of the pressure swing adsorber is connected with a cooler, a gas buffer tank and a compressor in sequence.
After purification by the carbon dioxide purification unit, the total sulfur content in the gas is less than 0.1ppm, the benzene content is less than 0.02ppm, the total hydrocarbon content is less than 50ppm, and the carbon dioxide concentration is more than 99.99%.
The utility model discloses directly combine LNG gasification technology, hydrogen preparation technology, carbon dioxide purification and preparation dry ice technology, energy utilization each other, the hydrogen of preparation can conveniently be transported and utilize, but food level's dry ice wide application in food and medicine field has good economic nature, this device process flow is simple, degree of automation is high, the equipment that adopts is reliable, economic benefits is showing.
Drawings
Figure 1 is the structure schematic diagram of the hydrogen and food grade dry ice device for the LNG preparation fuel cell of the utility model.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
As shown in fig. 1, the structure of the apparatus of the present invention is explained according to the process of preparing dry ice:
1. LNG (3.0MPaG) pressurized by an LNG booster pump P-100 in the LNG storage tank V100 enters an LNG heat exchanger LNG-100 to exchange heat with purified carbon dioxide, and the temperature is raised to 0 ℃ (material flow 2-5-6).
2. The heated natural gas is heated to 800 ℃ by a combustion furnace E-101 and then enters a natural gas conversion section (material flow 7-9).
3. In the natural gas conversion section, after natural gas is concentrated by a converter GBR-100, a converter GBR-101 and a pressure swing adsorber X-100 respectively, a hydrogen-rich gas mixture (material flow 9-10-12-14) with the hydrogen concentration of more than 99.9 percent is prepared.
4. The outlet of the pressure swing adsorption working section is rich in carbon dioxide gas mixture, after passing through the carbon dioxide purification working section, the total sulfur content in the high-purity carbon dioxide gas mixture is 0.07ppm, the benzene content is 0.015ppm, the total hydrocarbon content is 350ppm, and the carbon dioxide concentration is more than 99.99 percent (stream 15-25).
5. The carbon dioxide concentrated by the carbon dioxide purification section enters an LNG heat exchanger LNG-100 to exchange heat with LNG and is cooled to-79 ℃, and then food-grade dry ice (material flow 25-26) is prepared.
Claims (4)
1. The utility model provides a device of hydrogen and food level dry ice for LNG preparation fuel cell which characterized in that: the device comprises a carbon dioxide dry ice making unit and a natural gas conversion unit;
the carbon dioxide dry ice making unit comprises an LNG heat exchanger,
the natural gas conversion unit comprises a natural gas converter, a natural gas converter and a pressure swing absorber which are connected in sequence; the LNG heat exchanger is communicated with the natural gas converter;
a hydrogen-rich gas outlet of the pressure swing adsorber obtains a hydrogen-rich gas meeting the hydrogen requirement for the fuel cell;
and a purge gas outlet of the pressure swing adsorber is connected with a carbon dioxide purification unit, the carbon dioxide purification unit is connected with the LNG heat exchanger, and food-grade dry ice is obtained after heat exchange with LNG.
2. The apparatus of claim 1, wherein: and the inlet end of the LNG heat exchanger is connected with an LNG booster pump.
3. The apparatus of claim 1 or 2, wherein: in the natural gas conversion unit, the inlet end of the natural gas converter is connected with a combustion furnace.
4. The apparatus of claim 1 or 2, wherein: and a hydrogen-rich gas outlet of the pressure adsorber is sequentially connected with a cooler, a gas buffer tank and a compressor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020109843982 | 2020-09-16 | ||
| CN202010984398.2A CN112028016A (en) | 2020-09-16 | 2020-09-16 | Method for preparing hydrogen and food-grade dry ice for fuel cell by LNG |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214780743U true CN214780743U (en) | 2021-11-19 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010984398.2A Pending CN112028016A (en) | 2020-09-16 | 2020-09-16 | Method for preparing hydrogen and food-grade dry ice for fuel cell by LNG |
| CN202011303976.8A Pending CN112265960A (en) | 2020-09-16 | 2020-11-19 | Method for preparing hydrogen and food-grade dry ice for fuel cell by LNG |
| CN202022694965.9U Active CN214780743U (en) | 2020-09-16 | 2020-11-19 | Device of hydrogen and food grade dry ice for LNG preparation fuel cell |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010984398.2A Pending CN112028016A (en) | 2020-09-16 | 2020-09-16 | Method for preparing hydrogen and food-grade dry ice for fuel cell by LNG |
| CN202011303976.8A Pending CN112265960A (en) | 2020-09-16 | 2020-11-19 | Method for preparing hydrogen and food-grade dry ice for fuel cell by LNG |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112875644A (en) * | 2021-03-03 | 2021-06-01 | 中海石油气电集团有限责任公司 | System and method for hydrogen production and liquid carbon dioxide production by LNG |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2085476C1 (en) * | 1993-04-22 | 1997-07-27 | Совместное предприятие Уральский научно-инженерный центр "Водород" | Method and installation for preparing extra-pure hydrogen |
| US20030021743A1 (en) * | 2001-06-15 | 2003-01-30 | Wikstrom Jon P. | Fuel cell refueling station and system |
| FR2877939B1 (en) * | 2004-11-16 | 2007-02-02 | Air Liquide | PROCESS AND PLANT FOR THE COMBINED PRODUCTION OF HYDROGEN AND CARBON DIOXIDE |
| CN104236252B (en) * | 2014-08-27 | 2016-06-22 | 华南理工大学 | LNG cold energy is utilized to prepare method and the device of liquid CO 2 and dry ice |
| CN110950304A (en) * | 2019-12-16 | 2020-04-03 | 简阳绿杉新能源设备有限公司 | Method for preparing high-purity hydrogen by using natural gas |
| CN110980646B (en) * | 2019-12-30 | 2023-08-18 | 华南理工大学 | System and method for preparing hydrogen from liquefied natural gas with CCS |
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2020
- 2020-09-16 CN CN202010984398.2A patent/CN112028016A/en active Pending
- 2020-11-19 CN CN202011303976.8A patent/CN112265960A/en active Pending
- 2020-11-19 CN CN202022694965.9U patent/CN214780743U/en active Active
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| Publication number | Publication date |
|---|---|
| CN112028016A (en) | 2020-12-04 |
| CN112265960A (en) | 2021-01-26 |
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