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Biomass gasification power generation system and power generation method

A power generation system and biomass technology, applied in chemical instruments and methods, gasification process, fuel oil system, etc., can solve problems such as by-products and blockage

Inactive Publication Date: 2020-09-18
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generated tar and the like cause clogging of equipment and piping in the above-mentioned gasification furnace, and there are problems caused by the generation of by-products

Method used

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  • Biomass gasification power generation system and power generation method

Examples

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Comparison scheme
Effect test

Embodiment

[0097] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.

[0098] [Configuration of biomass gasification power generation system]

[0099] In this example, using figure 1 A schematic diagram of a biomass gasification power generation system 1 is shown. As a water electrolysis device, a commercially available product ("H2BOX" manufactured by Kobelco Eco-Solutions Co., Ltd.) was used.

reference example 1

[0101] Into a downdraft type gasifier having an outer diameter of 10 cm and a height of 60 cm, cedar wood chips having a water content of 13% by mass on a moisture basis were supplied. Thereafter, air was supplied as a gasification agent to the gasification furnace at a supply rate of 80 L / min to generate carbon monoxide and hydrogen as combustible gases. The oxygen concentration in the gasifying agent was 21% by volume. The generated amounts of carbon monoxide, hydrogen, and carbon dioxide were 18.0% by volume, 13.0% by volume, and 13.0% by volume, respectively, with respect to the entire gas (total of gasification agent and combustible gas), and the amount of combustible gas generated was (The total production amount of carbon monoxide and hydrogen) was 31.0% by volume. In addition, the temperature of a gasifier is 400-900 degreeC. The gas composition was measured by GC (gas chromatography).

Embodiment 1

[0103] Oxygen gas generated in a water electrolysis device (“H2BOX” manufactured by Kobelco Eco-Solutions Co., Ltd.) was supplied at a supply rate of 4 L / min, and air was supplied at a supply rate of 80 L / min. Carbon monoxide and hydrogen were generated as combustible gases in the same manner as in Reference Example 1 except that the gasification agent was supplied to the above-mentioned gasifier. The oxygen concentration in the gasification agent was 24.8% by volume. The generated amounts of carbon monoxide, hydrogen, and carbon dioxide were 21.8% by volume, 13.3% by volume, and 13.6% by volume of the gas in the gasifier as a whole, and the amount of combustible gas (carbon monoxide and hydrogen) total production) was 35.1% by volume.

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Abstract

A biomass gasification power generation system which is provided with: a gas generation device which generates a combustible gas from a biomass and a gasification agent; an internal combustion enginewhich generates power from a fuel gas that contains the combustible gas which is generated by the gas generation device; and an electric generator which generates electric power from the power that isgenerated by the internal combustion engine. This power generation system is additionally provided with a water electrolysis device which generates oxygen and hydrogen by means of water electrolysis;the gasification agent contains oxygen that is generated by the water electrolysis device; the fuel gas contains hydrogen that is generated by the water electrolysis device; and the oxygen concentration in the gasification agent is from 22% by volume to 40% by volume (inclusive).

Description

technical field [0001] The invention relates to a biomass gasification power generation system and a power generation method. Background technique [0002] A method of gasifying and utilizing biomass as a biosource resource is proposed. More specifically, when a gasification agent containing air, oxygen, or water vapor is injected into biomass in a gasification furnace to gasify it, synthesis gas containing hydrogen, carbon monoxide, and carbon dioxide as main components is produced. The resulting synthesis gas is used as fuel for internal combustion engines. Here, by the above-mentioned gasification, by-products such as tar, which are hydrocarbons, are generally produced together with synthesis gas. The generated tar and the like cause clogging of equipment and piping in the gasification furnace, and there is a problem caused by the generation of by-products. [0003] Patent Document 1 discloses a pyrolysis gasification system, which includes: a carbonization device for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/02
CPCC10J2300/0916C10J2300/0956C10J2300/1606C10J2300/165C10J2300/1684C25B1/04C25B15/083F02B43/08Y02E60/36Y02P20/145C01B3/36C01B2203/84C10J3/72C10J2300/092C10J2300/0959C10J2300/1643C10J2300/1671C10J3/02C25B9/00F02B2201/04
Inventor 广兼岳志桐野智明木村龙太郎
Owner MITSUBISHI GAS CHEM CO INC