Carbonization and gasification of biomass and power generation system

Abstract

The invention provides a process for carbonization and gasification of biomass. Biomass, including waste biomass, is gasified by a process in which the biomass is first carbonized, and the char and pyrolysis gas from the carbonizer are respectively fed to a high temperature gasifying part and a gas reformer part of a two-stage gasifier. A gasifying agent is continuously fed to the gasifying part, and intermittently fed to the gas reformer, to maintain the temperature required to avoid tar formation in the gas reformer stage. Multiple carbonization chambers are operated in rotation. When the carbonization / gasification apparatus is used to provide fuel to an electric power generator set, exhaust heat from the generator power plant is fed back to the carbonizer, and can be supplemented by exchange of heat from the gas delivered to generator power plant from the outlet of the gasifier.

Description

[0001] The present invention is a divisional application of a patent application with an application date of March 22, 2005, an application number of 200510056829.4, and an invention title of "biomass carbonization and gasification and power generation device". technical field [0002] The present invention relates to the generation of gas by carbonization and gasification of biomass, and to the efficient generation of electricity using biomass as an energy source. Background technique [0003] The term "biomass" as used herein refers to a material comprising a mass of matter derived from living organisms. Biomass can include, for example, agricultural waste, forestry waste, municipal waste, construction material waste, waste from food production, waste treatment sludge, and the like, and mixtures of such materials. Biomass can include certain inorganic substances, and also large amounts of organic material more indirectly associated with living organisms, such as waste plas...

AI Technical Summary

Problems solved by technology

However, it is difficult to reliably and consistently secure such fuels because the amount of wood-based biomass available varies seasonally and is susceptible to climate change

Therefore, wood-based biomass has high collection costs and is not cost-effective when used alone as fuel

In addition, since it is difficult to collect the required amount of wood-based biomass, it is difficult to scale up power generation facilities, and it is difficult to achieve high-efficiency power generation using wood-based biomass

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