Cyclone separator and preheating gasification system

Abstract

A cyclone separator, comprising an inlet passage, a cyclone cylinder, a cone section and an outlet, wherein the inlet passage includes a tangential side wall tangent to the cyclone cylinder; the inlet passage communicates with the upper part of the cyclone cylinder, and the inlet passage is opened for The entrance where the separated matter enters, so that the separated matter enters the inside of the cylinder along the tangential direction of the cyclone cylinder after entering from the entrance; the lower part of the cyclone cylinder is connected with the open end of the cone section, and the closed end of the cone section is used as the lower outlet , the separated solids are configured to fall into the cone section through the cyclone body; the outlet communicates with the top of the cyclone body, and the separated gas enters the outlet through the cyclone body and leaves the cyclone separator; the tangential side wall surface and / or At least one disturbing air inlet is opened on the cyclone cylinder body. The cyclone separator of the present invention can realize the continuous and quantitative adjustment of the distribution of heat, mass and fuel particle size between the preheating unit and the gasification unit in the preheating gasification process.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a cyclone separator and a preheating gasification system comprising the cyclone separator. Background technique [0002] Coal gasification technology is an important part of my country's clean coal technology, one of the main ways to use coal efficiently and cleanly, and has become the core technology of many modern energy and chemical systems. The entrained bed coal gasification process has high reaction temperature, liquid slag discharge, high gasification intensity, large production capacity, and high carbon conversion rate. It has become the main development direction of coal gasification technology. However, the existing entrained-bed gasification process has problems such as small particle size of coal pulverized into the furnace, high preparation cost, and large restrictions on coal types. The preheating gasification process realizes the cascade control of the c...

AI Technical Summary

Problems solved by technology

In the prior art, for the specified input conditions (such as coal type, coal particle size, gasification load), the best match of heat, mass and fuel particle size between the preheating unit and the gasification unit can be obtained by design during system design However, when the system operation deviates from the design load or the coal type and particle size are changed in actual operation, the optimal matching relationship between the preheating unit and the gasification unit will be destroyed, which will make the gasification performance indicators (such as effective gas ratio, carbon conversion rate, cold gas efficiency, etc.) cannot meet the production requirements, and in severe cases, the system cannot run stably

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