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Solar hydrogen permeation membrane reaction device and use method thereof

A technology of a reaction device and a hydrogen permeable membrane is applied in the chemical method of reacting liquid and gas medium, the reaction of liquid and gas in thin film, chemical instruments and methods, etc. The problems of complex process and high consumption of fossil energy can reduce the loss of thermal radiation energy, improve the conversion rate of reactants, and save the area of ​​the mirror field.

Inactive Publication Date: 2018-04-20
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, hydrogen production by electrolysis of water needs to consume high-grade electric energy, and the cost of hydrogen production is relatively high.
The second industrial hydrogen production method is hydrogen production by reforming natural gas. The reaction temperature is generally 800°C. The energy required for the reaction is usually provided by burning fossil energy. This process has complex hydrogen purification processes, harsh operating conditions, and high requirements for equipment design and manufacturing. Issues such as high consumption of fossil energy

Method used

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  • Solar hydrogen permeation membrane reaction device and use method thereof
  • Solar hydrogen permeation membrane reaction device and use method thereof
  • Solar hydrogen permeation membrane reaction device and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This example is the preparation of hydrogen production by steam reforming of methane.

[0042] The solar heat collecting tube is installed on the focal line of the solar concentrating device. Under the same conversion rate requirements, compared with the traditional high-temperature steam reforming of methane to produce hydrogen, the thermochemical reaction temperature in this embodiment can be reduced to 300°C-400°C. In this embodiment, the solar concentrating device adopts a linear Fresnel type solar concentrating device, the concentrating ratio ranges from 30 to 100, and the temperature of the solar heat collecting tube on the focal line can reach 400°C. According to the coupling relationship between the temperature required for the methane steam reforming reaction and the heat collection temperature of the solar heat collector, solar energy can be used as the heat source for the methane steam reforming reaction. The thermochemical reaction channel is filled with Ru...

Embodiment 2

[0050] This embodiment is the hydrogen production reaction of ammonia decomposition, which is also an endothermic reaction, and the reaction equation is as follows:

[0051]

[0052] The energy change ΔH of the chemical reaction in this reaction θ 298 = 92.4 kJ / mol. In this embodiment, ammonia gas is used as the raw material gas, and the reaction device and reaction process are the same as in Embodiment 1. The temperature of the solar heat collecting tube is controlled to stabilize at 400° C. by adjusting the concentration ratio of the linear Fresnel type solar concentrating device. The thermochemical reaction channel is filled with a catalyst La 1-x Sr x NiO 3 . Other process conditions are with reference to embodiment 1.

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Abstract

The invention discloses a solar hydrogen permeation membrane reaction device. The device comprises a solar heat collection device and a thermal chemical reactor; the solar heat collecting device comprises a solar concentrating device and a solar heat collecting tube arranged below the solar concentrating device; the solar heat collecting tube sequentially comprises an antireflection film, a light-transmitting glass tube and a metal heat absorption inner tube; the outer surface of the light-transmitting glass tube is coated with the antireflection film; a sealed vacuum interlayer is formed between the light-transmitting glass tube and the metal heat absorption inner tube; the thermal chemical reactor is arranged in the metal heat absorption inner pipe; the thermal chemical reactor comprisesa porous ceramic substrate tube; the outer surface of the porous ceramic substrate tube is coated with a selective hydrogen permeation membrane; a hot chemical reaction channel is formed between theporous ceramic substrate pipe and the metal heat absorption inner pipe; and a hydrogen separation channel is formed in the porous ceramic substrate pipe. According to the solar hydrogen permeation membrane reaction device provided by the invention, solar energy is used as reaction energy, so that the device can save energy and protect the environment, and has higher energy utilization efficiency.Meanwhile, the generation and separation of hydrogen are integrated, the flow is simplified, and the reaction conversion rate is improved.

Description

technical field [0001] The invention belongs to the technical field of new energy and renewable energy, and in particular relates to a solar hydrogen permeable membrane reaction device and a using method. Background technique [0002] Hydrogen (H 2 ) As a very important energy carrier and petrochemical raw material, it has an irreplaceable position in chemical reactions such as the production of synthetic ammonia, methanol, and hydrogenation reactions in petroleum refining processes. In addition, hydrogen, as a reducing agent, is widely used in the preparation of polysilicon in the electronics industry and the reduction of metal oxides in the metallurgical industry. In addition, in the food processing industry, hydrogen is used to hydrotreat many natural unsaturated edible oils, making the resulting products storage-stable. The diversity of hydrogen uses makes the demand for hydrogen larger. [0003] There are two main methods for modern industrial hydrogen production. Th...

Claims

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Application Information

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IPC IPC(8): B01J19/12B01J8/06B01J10/00B01J10/02B01J19/00C01B3/38
CPCB01J8/06B01J10/007B01J10/02B01J19/0053B01J19/127B01J2208/00451B01J2219/00144B01J2219/0884B01J2219/0892B01J2219/194C01B3/38C01B2203/0205C01B2203/0233C01B2203/041C01B2203/0855Y02P20/10Y02P20/133Y02P20/50Y02P20/52
Inventor 胡雪蛟王宏圣赵秋陵黄俊曾伟强孔慧
Owner WUHAN UNIV
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