Coal pyrolysis gasification method and coal pyrolysis gasification device

摘要

A two-stage gas-bed reactor (20) with two upper and lower chambers, each having a cylindrical gasification furnace at the lower stage and a cylindrical reforming furnace (1) at the upper stage and connected between them by a throat (3) serving as an enlarged diameter portion. Is used to generate at least a coal and an oxygen-containing gas into the gasification furnace, partially oxidize the coal to generate a gasification gas, introduce the gasification gas into the reforming furnace (1), and A product gas containing at least hydrogen gas and carbon monoxide gas by charging coal into the reforming furnace (1) and thermally decomposing the coal charged into the reforming furnace using sensible heat of gasification gas The coal is pyrolyzed and gasified to produce coal, and the coal to be fed into the gasifier is thrown into the gasifier by carrying an air current so as to form a swirling flow in the circumferential direction. The coal to be input in (1) is opposite to the swirling flow of coal to be input to the gasifier Providing pyrolysis gasification process of coal to introduce by pneumatic conveying towards a circumferential direction.