Low-temperature plasma coal or biomass gasification system and method

Abstract

The invention discloses a low-temperature plasma coal or biomass gasification system and method. According to the method, to-be-gasified coal or biomass is sent into a gasification reactor through a feeder, a plasma generation end of a plasma generation device is arranged in an inner cavity of the gasification reactor, plasma is formed in the gasification reactor, the plasma is fed through a working gas device and a steam generator which are connected with a feeding hole of the gasification reactor and used as a carrier of coal or biomass, chemical bonds in pulverized coal, biomass and workinggas molecules are broken by high-energy particles generated by discharge and are cracked to form active particles, ions and molecular groups, finally, available product gas is obtained by recombination, thus gasification of coal and biomass is finished, and the product gas is collected after cooled by a cooling pipe connected with a gas outlet of a separation cyclone. The coal and biomass gasification device is simple in structure and high in energy utilization efficiency, during low-temperature plasma gasification, most of energy is used for accelerating free electrons, the macroscopic temperature of plasma is very low, and energy loss is avoided.

Description

technical field [0001] The invention belongs to the field of pulse power and discharge plasma and the field of plasma coal or biomass gasification, in particular to a low-temperature plasma coal or biomass gasification system and method. Background technique [0002] my country is a country dominated by fossil energy, poor in oil, low in gas, and rich in coal. The energy system dominated by coal will continue for a long time in the future, but the high carbon emissions caused by the use of coal, Great pressure has been placed on the ecological environment. At present, many countries in Europe have launched de-coal plans, and environmental problems have been significantly improved. It is foreseeable that my country will eventually embark on the road of clean and efficient utilization of coal. The current clean coal technology is mainly coal gasification technology, mainly including traditional gasifier, entrained bed coal gasification technology and plasma coal gasification t...

AI Technical Summary

Problems solved by technology

At present, the traditional biomass gasification technology is facing problems such as high tar content, secondary pollution, and economic benefits. However, the current mainstream research on plasma biomass gasification is high-temperature plasma gasification at around 5000K, which is comparable to high-temperature plasma coal gasification. Compared with similar defects, such as high power consumption for generating plasma, large investment cost, and small size of the generated plasma area, etc.

Images