Oxygen carrier coal catalytic pyrolysis hydrogen production reaction device and oxygen carrier coal catalytic pyrolysis hydrogen production method

Abstract

The invention provides an oxygen carrier coal catalytic pyrolysis hydrogen production reaction device and an oxygen carrier coal catalytic pyrolysis hydrogen production method. According to the reaction device, a pyrolysis reduction furnace, a moving bed hydrogen production furnace and a combustion oxidation furnace are combined, and catalytic pyrolysis, oxidation carrier reduction and other reactions are carried out in the pyrolysis reduction furnace; then, the reduction carrier enters a moving bed hydrogen production furnace to be subjected to a hydrogen production reaction with high-temperature water vapor to produce hydrogen-rich gas, wherein the pyrolysis semicoke, the oxidation carrier and the reduction carrier which does not react completely enter a combustion oxidation furnace to be subjected to a high-temperature combustion reaction with oxygen-containing gas to generate oxidation carrier, fine ash and flue gas; wherein the oxidation carrier is circulated back to the pyrolysis reduction furnace through the material returning device, so that the circulation of heat flow and material flow is realized, and the purpose of full utilization is achieved. Compared with the prior art, the device and the method provided by the invention have the advantages that the carbon conversion rate can reach 99%, the prepared hydrogen content is 99.5%, and meanwhile, the device and the method have the characteristics of high reaction intensity, high energy utilization rate and high gas yield.

Description

technical field [0001] The invention relates to the technical field of hydrogen production from coal, in particular to an oxygen carrier coal catalytic pyrolysis hydrogen production reaction device and an oxygen carrier coal catalytic pyrolysis hydrogen production method. Background technique [0002] With the consumption of fossil energy and CO 2 With the increase of greenhouse gas emissions, people are paying more and more attention to a clean and efficient alternative energy source. As a kind of clean energy, hydrogen energy, in the process of energy conversion, the final product is water, which can truly achieve zero emission of pollutants, and can be widely used in aerospace power, vehicle fuel, fuel cells, combustion power generation, chemical production, etc. One of the best alternatives for energy. At present, the main methods for producing hydrogen energy include hydrogen production by steam reforming, hydrogen production by electrolysis of water, and hydrogen pro...

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Problems solved by technology

But due to the intensification of the transformation effect leading to CO 2 The content increased significantly, while the CO in the furnace 2 The absorption reaction is affected by the reaction process conditions and the performance of the absorbent. CO 2 The removal efficiency is low, and contains CO, CH 4 and other gases, the hydrogen content at the reactor outlet is still low, failing to reach the high-purity level, and the subsequent purification, transformation and separation and purification units cannot be omitted

[0004] The hydrogen content in the export synthesis gas in the above-mentioned patented technology is slightly higher than that of the traditional gasifier, but gasification, shift and CO 2 Many reactions such as absorption are coupled in one reactor, the reaction process coupling is difficult, and the purity of hydrogen in the product gas is not high, so it cannot be directly applied as a clean hydrogen source

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