Method and system for hydrogen production and power generation through co-gasification of coal and biomass

A biomass and co-gasification technology, applied in chemical instruments and methods, hydrogen, circuits, etc., can solve problems such as contradicting hydrogen energy use planning, achieve good economy, achieve negative carbon emissions, and improve power generation efficiency.

Pending Publication Date: 2021-08-06
HUANENG TIANJIN COAL GASIFICATION POWER CO LTD
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  • Application Information

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Problems solved by technology

More importantly, the coal-to-hydrogen process produces a large amount of carbon dioxide emissions, and the hydrogen produced is gray hydrogen, which is contrary to the current plan for the use of hydrogen energy under the background of carbon neutrality.

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  • Method and system for hydrogen production and power generation through co-gasification of coal and biomass

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0035] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] Please refer to figure 1 , an embodiment of the present invention provides a method for generating hydrogen by co-gasification of coal and biomass, comprising the following steps:

[0037] Step 1: Send oxygen 8 , coal powder 1 , steam 11 and crushed biomass 2 into the pressurized gasifier 4...

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Abstract

The invention discloses a method and system for hydrogen production and power generation through co-gasification of coal and biomass. The method for hydrogen production and power generation comprises the following steps of 1, feeding oxygen, pulverized coal, water vapor and crushed biomass into a pressurized gasification furnace, and carrying out partial oxidation reaction to generate coal gas, 2, cooling the coal gas through a quenching device and then purifying through a purifying device, and removing impurities in the coal gas, 3, feeding the water vapor and the coal gas into a reforming device, and carrying out reforming reaction to generate synthesis gas, 4, feeding the synthesis gas into a coarse removal device to remove impurities, then feeding the synthesis gas into a fine removal device to remove carbon dioxide so as to obtain hydrogen, and injecting the carbon dioxide underground for sealing, and 5, feeding the hydrogen into the fuel cell, and carrying out chemical reaction on the hydrogen and the oxygen under the action of the catalyst to generate water and generate electric energy. The process is mature, economical and feasible, and has negative carbon emission.

Description

technical field [0001] The invention relates to the technical field of hydrogen production from coal and fuel cells, in particular to a method and system for co-gasification of coal and biomass to produce hydrogen and generate electricity. Background technique [0002] Compared with traditional fossil energy hydrogen production, the cost of hydrogen production from renewable energy is higher. China's coal-based resource endowment determines that coal-to-hydrogen is still an important way to produce hydrogen at the current stage. The process of the coal-to-hydrogen process is that raw coal, limestone and other raw materials pass through the pulverized coal or coal-water slurry preparation unit to make qualified pulverized coal or coal-water slurry, and then enter the gasifier together with the oxygen provided by the air separation unit. Oxidation reaction, the crude synthesis gas produced by the reaction is mainly composed of hydrogen, carbon monoxide and carbon dioxide. Af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0612C01B3/50C01B3/12C01B32/50C10J3/20C10J3/72
CPCH01M8/0612C01B3/50C01B3/12C01B32/50C10J3/20C10J3/72C01B2203/0405C01B2203/042C01B2203/047C01B2203/0475C01B2203/0495C01B2203/066Y02P30/00Y02E60/50
Inventor 刘雯王相平徐映州陶继业王超崔丕桓康晓蒙
Owner HUANENG TIANJIN COAL GASIFICATION POWER CO LTD
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