Continuous automatic returning system for pulverized coal pressure gasifier

Abstract

The invention relates to a continuous automatic returning system for a pulverized coal pressure gasifier. The continuous automatic returning system is used for a gasifier reactor and includes a monitoring unit for real-time monitoring of an operation status of a device, a gas-solid separation unit, a dipleg discharging unit, a balance discharging unit and an automatic bed returning unit, wherein the gas-solid separation unit, the dipleg discharging unit, the balance discharging unit and the automatic bed returning unit are sequentially connected from top to bottom. After being collected by thegas-solid separation unit, pulverized coal particles that do not react completely in one time reach the automatic bed returning unit through the dipleg discharging unit and the balance discharging unit in the aerosol-like form, and the particles overcome resistance of a gasifier bed and resistance of a cyclone separator and automatically continuously enter the gasifier for secondary reaction. Thewhole process is monitored in real time by the monitoring unit. Compared with the prior art, the continuous automatic returning system achieve continuous, automatic and stable returning under high temperature (729 DEG C), high pressure (3.4 MPaG) and high dust concentration conditions in pulverized coal pressurization and gasification, a complex process is simplified, device fault points are reduced, and security risks are reduced. Devices at each part are simple in structure and low in manufacturing cost.

Description

technical field [0001] The invention belongs to the field of coal gasification, and relates to a continuous automatic feeding system for a pulverized coal pressurized gasification furnace. Background technique [0002] Clean and efficient utilization of coal is an important direction to solve the world's energy supply problems. At present, pulverized coal gasification is developing in the direction of large-scale, pressurized, low pollution, and adaptable to multiple coal types. my country has included large-scale pulverized coal gasification technology in the major projects of the "13th Five-Year Plan" national science and technology innovation plan. At the same time, great progress has been made in pulverized coal gasification reaction technology in China, and excellent industrial technologies such as space furnace gasification and coal-water slurry gasification have emerged. As one of the core components of the gasification island, the development of the gasifier return...

AI Technical Summary

Problems solved by technology

It not only tested the performance of the cyclone separator system under the condition of high temperature, high pressure and high dust concentration, but also challenged the stability and safety of the system

Images