Catalyst loading method and coal catalytic gasification method

Abstract

The invention relates to the technical field of coal catalytic gasification, in particular to a loading method of a catalyst as well as a coal catalytic gasification method. The effective loading quantity of the catalyst can be improved and the catalytic effect of the catalyst can be improved, so that the coal gasification conversion efficiency can be improved. The embodiment of the invention provides the loading method of the catalyst. The loading method comprises the following steps: mixing a coal gasification raw material with the catalyst, wherein the coal gasification raw material is coalpowder or coke; performing heat treatment on a mixture of the coal gasification raw material and the catalyst, to dissociate alkali metal ions and / or alkaline earth metal ions out of the catalyst, and carry out an ion exchange reaction with active hydrogen in the coal gasification raw material, so that the catalyst is loaded. The embodiment of the invention is applied to preparation of methane through coal gasification.

Description

Technical field [0001] The invention relates to the technical field of coal catalytic gasification, in particular to a catalyst loading method and a coal catalytic gasification method. Background technique [0002] Coal catalytic gasification is a process in which alkali metal or alkaline earth metal catalysts are loaded on the surface of coal gasification raw materials to produce rich methane gas and tar at a certain pressure and temperature (600-800°C). [0003] The catalyst loading is the first step of the catalytic gasification process. In the previous loading process, the catalyst is usually dissolved in water, and then the catalyst aqueous solution is mixed with the coal gasification raw materials, and the excess water is dried and evaporated to complete the catalyst loading. In this process, the alkali The main physical mixing between the metal or alkaline earth metal catalyst and the coal gasification raw material makes the effective load of the catalyst low, which is not c...

AI Technical Summary

Problems solved by technology

[0003] Catalyst loading is the first step in the catalytic gasification process. In the previous loading process, the catalyst is usually dissolved in water, and then the catalyst aqueous solution is mixed with the coal gasification raw material, and the excess water is dried and evaporated to complete the catalyst loading. In this process, the alkali The physical mixing between the metal or alkaline earth metal catalyst and the coal gasification raw material mainly occurs, which makes the effective load of the catalyst low, which is not conducive to the migration of the catalyst in the coal gasification reaction, which causes the catalytic effect of the catalyst to not be exerted and leads to gasification Process gasification efficiency is low

Images