Automatic continuous dosing system for treating coal gasification black water

Abstract

The invention discloses an automatic continuous dosing system for treating coal gasification black water. The system comprises a settling tank, a grey water tank and a dissolving tank, the settling tank is connected with a black water pipe, a flocculating agent dosing branch pipe is arranged on the black water pipe, the flocculating agent dosing branch pipe is connected with the dissolving tank, aconnecting pipe is arranged between the settling tank and the grey water tank, the grey water tank is connected with a dispersing agent dosing pipe, the bottom of the grey water tank is provided witha purified water pipe, and the purified water pipe is provided with two branches, namely an outer water drainage pipe and a recycled water pipe. In actual use, flow monitoring and online data signalanalysis are added to the whole dosing system, and detection signals are transmitted to a central control room, so that flow regulation and continuous and automatic dosing of a medicament can be ensured, and the treated water quality is ensured to meet the requirements of discharge and gasification cyclic utilization.

Description

technical field [0001] The invention relates to an automatic and continuous dosing system for water treatment, in particular to an automatic and continuous dosing system for treating coal gasification black water. Background technique [0002] In the industrial production process of coal gasification equipment, coal gasification raw coal (or coal water slurry) enters the gasifier together with high-pressure oxygen through the coal gasification burner, and produces carbon monoxide, hydrogen and other effective gases after partial oxidation and combustion in the gasifier. Gas, as well as combustion slag and coal ash products, the gasification products from the gasifier are cooled and washed by the gasification ash water, and then proceed to the downstream process. At the same time, after the gasification gray water passes through the above-mentioned washing coal gasification products, the water quality becomes black and dirty to form gasification black water, and the technical...

AI Technical Summary

Problems solved by technology

[0003] According to the above problems and according to the requirements of the coal gasification device for the recycling of system water resources, the treatment of coal gasification black ash water is generally carried out by adding water treatment chemicals (flocculants and gray water dispersants), but the current The setting and control of the dosing system are relatively rough, and there are problems of discontinuous dosing and easy disconnection of the system. At the same time, it mainly relies on the regular inspection of on-site operators and manual on-site operations to find and solve problems, and the degree of automation is low.

Images