Low-temperature adsorption type hydrogen production, storage and transportation system

Abstract

The utility model relates to the technical field of hydrogen production, storage and transportation, in particular to a low-temperature adsorption type hydrogen production and storage and transportation system. The system comprises a liquefied natural gas storage tank, a cold energy recoverer, a heater, a methane cracking furnace, a separator, a desorbed gas compressor, a hydrogen compressor, a low-temperature adsorption tank and a low-temperature adsorption type gas cylinder, and the liquefied natural gas storage tank, the cold energy recoverer, the heater and the methane cracking furnace are sequentially communicated through pipelines. The outlet end of the methane cracking furnace is connected to the inlet of the heater through a pipeline, the outlet of the heater is connected with the separator through a pipeline, and the outlet of the separator is respectively connected to the cold energy recoverer and the pipeline between the cold energy recoverer and the heater through two pipelines. Through cooperation of the cold energy recoverer, the heater, the methane cracking furnace, the separator, the desorbed gas compressor, the hydrogen compressor, the low-temperature adsorption tank and the low-temperature adsorption type gas cylinder, efficient production and high-density storage and transportation of hydrogen are realized by taking natural gas as a raw material.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen production and storage and transportation technical field especially low temperature adsorption formula hydrogen production and storage and transportation system. BACKGROUND

[0002] At present, the production mode of hydrogen mainly includes water electrolysis hydrogen production, methane conversion hydrogen production and coal pyrolysis hydrogen production. Water electrolysis hydrogen production is a clean zero-carbon hydrogen production mode, but its cost is high and economicity is poor; the cost of methane conversion hydrogen production and coal pyrolysis hydrogen production is low, and economicity is good, but it has carbon emission and is not friendly to the environment.

[0003] The storage and transportation mode of hydrogen produced by the above mode mainly includes high-pressure gaseous hydrogen storage, liquid hydrogen storage and solid metal hydrogen storage. Although high-pressure gaseous hydrogen storage has been widely used in industrial and transportation fields, its equipment manufacturing cost is high, and safety problem is often the focus. Liquid hydrogen storage is stored at high density, but due to the extremely low temperature required for cooling and continuous thermal management control, this technology faces significant energy loss and high cost problems. Solid metal hydrogen storage uses magnesium-based metal as a carrier to store hydrogen by chemical adsorption, although it avoids the need for high-pressure hydrogen storage and low-temperature cooling, but this technology faces significant problems of high raw material cost, high energy consumption at high temperature and poor reversibility. SUMMARY

[0004] The technical problem to be solved by the utility model is: in order to solve the technical problems described in the background art, the utility model provides a low temperature adsorption formula hydrogen production and storage and transportation system. Through the cooperation of cold energy recovery device, heater, methane cracking furnace, separator, desorption gas compressor, hydrogen compressor, low temperature adsorption tank and low temperature adsorption type gas cylinder, the efficient production and high-density storage and transportation of hydrogen are realized by taking natural gas as raw material.

[0005] The utility model adopts the technical scheme to solve the technical problem thereof:

[0006] A low temperature adsorption formula hydrogen production and storage and transportation system, including liquefied natural gas storage tank, cold energy recovery device, heater, methane cracking furnace, separator, desorption gas compressor, hydrogen compressor, low temperature adsorption tank, low temperature adsorption type gas cylinder, liquefied natural gas storage tank, cold energy recovery device, heater, methane cracking furnace are sequentially communicated by pipeline, the outlet end of methane cracking furnace is connected to the inlet of heater by pipeline, the outlet of heater is connected with separator by pipeline, the outlet of separator is connected to the pipeline between cold energy recovery device and heater respectively by two pipelines, the outlet end of cold energy recovery device is connected with low temperature adsorption tank by pipeline, the outlet end of low temperature adsorption tank is connected with low temperature adsorption type gas cylinder by pipeline, desorption gas compressor is installed on the pipeline between separator outlet end and heater, hydrogen compressor is installed on the pipeline between separator outlet end and cold energy recovery device.

[0007] Specifically, the low-temperature adsorption tank comprises a tank body and a porous carbon layer, and the tank body is internally provided with the porous carbon layer.

[0008] Specifically, the low-temperature adsorption tank comprises a tank body and a porous carbon layer, and the tank body is internally provided with the porous carbon layer.

[0009] Specifically, the cold energy recovery device is a plate heat exchanger structure, and is internally provided with a liquid methane channel and a gaseous hydrogen channel.

[0010] Specifically, the methane cracking furnace is a vertical fluidized bed structure, and is internally provided with a solid nanoscale iron-nickel base layer.

[0011] Specifically, the separator is a pressure swing adsorption structure, and is internally provided with an active alumina layer.

[0012] The low-temperature adsorption hydrogen production and storage and transportation system has the advantages that: the system uses natural gas as raw material to realize efficient production and high-density storage and transportation of hydrogen. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model is further described below in combination with the drawings and examples.

[0014] Figure 1 is the structure schematic diagram of the utility model;

[0015] Fig. 1. liquefied natural gas storage tank, 2. cold energy recovery device, 3. heater, 4. methane cracking furnace, 5. separator,

[0016] 6. desorption gas compressor, 7. hydrogen compressor, 8. low-temperature adsorption tank, 9. low-temperature adsorption gas cylinder. DETAILED DESCRIPTION

[0017] The utility model is further described below in combination with the drawings and examples.

[0018] Figure 1 is the structure schematic diagram of the utility model.

[0019] The low-temperature adsorption hydrogen production and storage system comprises a liquefied natural gas storage tank 1, a cold energy recovery device 2, a heater 3, a methane cracking furnace 4, a separator 5, a desorption gas compressor 6, a hydrogen compressor 7, a low-temperature adsorption tank 8 and a low-temperature adsorption cylinder 9.

[0020] The low-temperature adsorption tank 8 comprises a tank body and a porous carbon layer.

[0021] The low-temperature adsorption cylinder 9 comprises a cylinder body and a porous carbon layer.

[0022] The low-temperature adsorption tank 8 and the low-temperature adsorption cylinder 9 are internally provided with the porous carbon layer, the micropore aperture of the porous carbon layer is 1-2 nm, the pore specific surface is 3000 m2 / g, the hydrogen molecule has strong adsorption capacity, and high-density hydrogen storage can be realized under a relatively low temperature and pressure environment.

[0023] The cold energy recovery device 2 is a plate heat exchanger structure and is internally provided with liquid methane channels and gaseous hydrogen channels.

[0024] The methane cracking furnace 4 is a vertical fluidized bed structure cracking furnace, and the methane cracking furnace 4 is internally provided with a solid nanometer iron-nickel base layer.

[0025] The separator 5 is a pressure swing adsorption structure and is internally provided with an active alumina layer.

[0026] The working mode of the present application is as follows: the liquefied natural gas (0.63 MPa, -162 DEG C) from the liquefied natural gas storage tank 1 enters the liquid methane channel of the cold energy recovery device 2 and exchanges cold energy with the hydrogen in the gaseous hydrogen channel to become gaseous normal temperature methane (0.620 MPa, 20 DEG C). The gaseous normal temperature methane enters the heater 3 and is heated to 600 DEG C, and then enters the inside of the methane cracking furnace 4 to produce carbon nanomaterials and hydrogen under the catalysis of the catalyst. The hydrogen and the uncracked methane mixed gas are discharged from the top of the methane cracking furnace 4, enter the heater 3 and exchange heat with the gaseous normal temperature methane, and then the cracking tail gas (0.61 MPa, 30 DEG C) after heat recovery and cooling enters the separator 5 to separate hydrogen and methane, the hydrogen-containing methane analysis gas is compressed by the analysis gas compressor 6 and sent back to the heater 3 for heating, and the high-purity hydrogen (0.60 MPa, 30 DEG C) after separation and purification is compressed by the hydrogen compressor 7. The compressed high-purity hydrogen (5.10 MPa, 30 DEG C) enters the gaseous hydrogen channel of the cold energy recovery device 2, absorbs the cold energy of the liquid methane channel and is cooled, and the low-temperature compressed hydrogen (5.00 MPa, -150 DEG C) after cooling enters the inside of the low-temperature adsorption type tank 8, and the porous carbon material adsorbs the low-temperature compressed hydrogen molecules. The low-temperature adsorption type tank 8 stores the hydrogen and transports it to the user end by land and sea transportation, and fills the low-temperature adsorption type gas cylinder 9.

[0027] With the above ideal embodiments of the present application as the inspiration, through the above description, relevant personnel can certainly make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A low temperature adsorption hydrogen production and storage and transportation system, characterized in that, The application relates to a liquefied natural gas storage tank (1), a cold energy recovery device (2), a heater (3), a methane cracking furnace (4), a separator (5), a resolved gas compressor (6), a hydrogen compressor (7), a low-temperature adsorption tank (8) and a low-temperature adsorption cylinder (9), wherein the liquefied natural gas storage tank (1), the cold energy recovery device (2), the heater (3) and the methane cracking furnace (4) are sequentially connected through pipelines; the outlet end of the methane cracking furnace (4) is connected to the inlet of the heater (3) through a pipeline; the outlet of the heater (3) is connected to the separator (5) through a pipeline; the outlet of the separator (5) is connected to the cold energy recovery device (2) and the pipeline between the cold energy recovery device (2) and the heater (3) through two pipelines; the outlet end of the cold energy recovery device (2) is connected to the low-temperature adsorption tank (8) through a pipeline; the outlet end of the low-temperature adsorption tank (8) is connected to the low-temperature adsorption cylinder (9) through a pipeline; the resolved gas compressor (6) is installed on the pipeline between the outlet end of the separator (5) and the heater (3); and the hydrogen compressor (7) is installed on the pipeline between the outlet end of the separator (5) and the cold energy recovery device (2).

2. The cryo-adsorption hydrogen production and storage system of claim 1, wherein: The low-temperature adsorption tank (8) comprises a tank body and a porous carbon layer, and the tank body is internally provided with the porous carbon layer.

3. The cryo-adsorption hydrogen production and storage system of claim 1, wherein: The low-temperature adsorption cylinder (9) comprises a cylinder body and a porous carbon layer, and the cylinder body is internally provided with the porous carbon layer.

4. The cryo-adsorption hydrogen production and storage system of claim 1, wherein: The cold energy recovery device (2) is a plate heat exchanger structure and is internally provided with liquid methane channels and gaseous hydrogen channels.

5. The cryo-adsorption hydrogen production and storage system of claim 1, wherein: The methane cracking furnace (4) is a vertical fluidized bed structure, and is internally provided with a solid nanometer iron-nickel base layer.

6. The cryo-adsorption hydrogen production and storage system of claim 1, wherein: The separator (5) is a pressure swing adsorption structure and is internally provided with an active alumina layer.

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