Key Technologies of Entrained-bed Coal Gasification System

Abstract

Due to the wide variety of utilization of entrained-bed coal gasification for chemicals production, hydrogen production and fuel for industry, technology has been developed worldwide. Gasification plants consist of several key technologies such as coal feeding, gasification, dust removal etc. The understanding of solid-gas flow in these fields is required in order to optimize the device configuration. This article introduces the recent R&D activities concerning two phase flow; coal feed rate and void fraction in a transportation tube, particle residence time in a swirl-flow type gasifier, high temperature dust removal technologies.