Catalytic gasification method and device

Abstract

The invention discloses a catalytic gasification method and device, relating to the technical field of catalytic gasification. The method and device can lower energy consumption in the gasification process, prevent the molten blast furnace cinder from being coated on the surface of the coal powder granules, and prevent the coal powder granules from adhesion and agglomeration, so that the gasification reaction can be performed more thoroughly, thereby enhancing the utilization ratio of coal. The catalytic gasification method disclosed by the invention comprises the following steps: granulating the blast furnace cinder to obtain solid-state blast furnace cinder granules; supplying a carbon raw material, a catalyst, a gasifying agent and the blast furnace cinder granules into a gasification facility; and carrying out gasification reaction on the carbon raw material and the gasifying agent in the gasification facility in the presence of the catalyst and the blast furnace cinder granules. The catalytic gasification method and device disclosed by the invention are suitable for a catalytic gasification process of coal.

Description

technical field [0001] The invention relates to the technical field of catalytic gasification, in particular to a catalytic gasification method and device. Background technique [0002] Catalytic gasification technology is an important way to cleanly and efficiently utilize coal. Using catalytic gasification technology, coal undergoes a gasification reaction with a gasification agent at a relatively low temperature under the catalysis of a catalyst to generate high-concentration methane. [0003] The overall reaction of the catalytic gasification process is a slightly endothermic reaction. In order to meet the preheating of the feed cold coal powder and make up for the heat required for the heat dissipation of the gasifier itself, a large amount of superheated steam and carbon monoxide CO, Hydrogen H 2 Entering the gasifier, the methanation reaction releases heat to provide the heat required by the system. The process adopts cryogenic separation, partial oxidation of produ...

AI Technical Summary

Problems solved by technology

However, when blast furnace slag is directly contacted with coal powder for heat exchange, the molten blast furnace slag is easy to wrap on the surface of coal powder particles, which greatly affects the progress of the gasification reaction; and the existence of molten blast furnace slag easily leads to coal The powder particles stick into blocks, which affects the stable operation of the gasification device, resulting in incomplete gasification reaction and low utilization rate of coal

Images