Slag-discharge system of pulverized coal gasification furnace

Abstract

The invention relates to a slag-discharging system of a pulverized coal gasification furnace. A gasification chamber communicated with a feed port is arranged in the shell of the pulverized coal gasification furnace. A slag chamber is positioned below the gasification chamber and is communicated with the gasification chamber through a slag screen. The upper end of the slag chamber is provided with a chilling circular pipe for spraying chilling water towards coal slag entering the slag chamber, and the lower end of the slag chamber is communicated with a slag hole arranged at the bottom of the shell through a tapered slag hopper. The slagging system of the pulverized coal gasification furnace is characterized in that the peripheral wall of the slag chamber is provided with a plurality of water injection nozzles connected with a chilling water system. Compared with the prior art, the slagging system of the pulverized coal gasification furnace can effectively avoid slag blockage in the slag chamber, therefore, the gasification furnace can stably operate for a long term, the maintenance cost is saved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a pulverized coal gasification furnace structure, in particular to a pulverized coal gasification furnace slagging system. Background technique [0002] From a global perspective, coal reserves are far greater than oil and natural gas. In terms of calorific value, coal accounts for 64%, crude oil 19%, and natural gas 17%. According to estimates, at the current mining speed, global crude oil can be mined for 40.5 years, natural gas can be mined for 66.7 years, and coal can be mined for 164 years. At the same time, the proven reserves of coal have increased by more than 50% in the past 20 years. Due to the extremely scattered distribution of coal, experts believe that the actual reserves of coal will be much higher than the current written figures. However, my country is a country "short of oil, less gas, and relatively rich in coal". The basic characteristics of the energy structure are that oil and natural gas reserves are rel...

AI Technical Summary

Problems solved by technology

For a gasification device with a daily coal input of 2,000 tons, the hourly coal input is nearly 84 tons, and it is not easy to mix solids and solids evenly. With such a large coal input, the mixing of limestone and coal cannot be completely uniform, especially Unable to ensure localized uniform mixing

[0007] Once the clogging of the slag chamber occurs, the existing coal gasifier basically has no countermeasures and can only be forced to stop

The slag blockage in the slag chamber of the gasifier has become the bottleneck of the long-term stable and continuous operation of the gasifier

Images