Method of gasifying gasification fuel and apparatus therefor

Abstract

It is intended to enhance the gasification efficiency of combustible solid contents at the time of gasification of a fuel of high fuel ratio having a high content of fixed carbon. There is provided an apparatus comprising gasification furnace (2) and, disposed on one side thereof, bed material downflow pipe (11) for introduction of fluid bed material (10) separated by bed material separator (9) and fuel supply port (21) for introduction of gasification fuel (12), and further comprising, disposed on the other side of the gasification furnace (2), solid contents supply port (19) for feeding of the fluid bed material (10) and combustible solid contents (18) within the gasification furnace (2) to combustion furnace (1), and further comprising vertical partition boards (22) arranged between the one end and the other end within the gasification furnace (2), so that there is created zigzag curved flow channel (23) bent up and down from the one end toward the other end within the gasification furnace (2).

Description

technical field [0001] The present invention relates to a gasification method and device for gasification fuel, in particular to a gasification method and device for gasification fuel that can efficiently gasify fuel with a high fuel ratio. Background technique [0002] Conventionally, various proposals have been made regarding a fluidized bed gasifier that uses solid fuel such as coal, organic waste, etc. as fuel and decomposes it to generate gas. One of such fluidized bed gasification furnaces is called an integrated gasification furnace. In this integrated gasification furnace, a gasification chamber and a carbon (char) combustion chamber of a fluidized bed are formed by supplying fluidizing gas to each lower part. Separated by one partition wall having an opening at the lower end, they are integrated as a whole. Between the gasification chamber and the carbon combustion chamber, the fluidized medium circulates through the opening of the partition wall, so that carbon (c...

AI Technical Summary

Problems solved by technology

However, even if the superficial velocity is adjusted in this way, it is impossible to effectively supply only combustible solid components that have been fully gasified in the gasification chamber to the carbon combustion chamber, and some combustible solid components that have not been fully gasified carbon burner

Therefore, when the gasification fuel is especially high-fuel-ratio fuel such as coal containing a lot of fixed carbon components, or a fuel with a high fuel-ratio raw material containing a lot of fixed carbon components (such as organic waste, mixed fuel), because it cannot only Combustible solid components generated from fuel with a high fuel ratio are efficiently retained in the gasification chamber for gasification, so there is a problem that high gasification efficiency cannot be obtained

Images