NON-SLAGGING AND PARTIAL-SLAGGING GASIFIER

摘要

The present invention relates to a cylindrical non-melt and partial melt type entrained flow bed gasifier with one or more burners installed on the top thereof for supplying pulverized raw coal and oxidizer, wherein each of the burners comprises three or four pipes to form a central supplying line for injecting the pulverized coal with a carrier gas into the gasifier, a primary oxidizer circular region around the central supplying line having multiple primary oxidizer supplying holes for injecting primary oxidizer vertically or at an angle to the injection region of the pulverized coal supplied through the central supplying line to direct the pulverized coal to the central region, and an outer cooling circular region around the primary oxidizer circular region for flowing cooling water, which is operated preferably at a temperature range of 1,250~1,450C, or of 1,150~1,500C according to the properties of the coal. According to the present invention, the pulverized coal and oxidizer are properly mixed, and the pulverized coal is directed towards the middle of the gasifier, so that the reaction is completed with the ash being wholly non-melted or partially melted. [Reference numerals] (AA) Oxidizer;(BB) Pulverized coal + Carrier gas;(CC) Coolant;(DD) Synthesis gas