Rotary flushing process for coal chemical gasified slag

Abstract

The invention provides a rotary flushing process for coal chemical gasified slag, and relates to the technical field of gasified slag treatment processes. The flushing process comprises the following steps that 1, primary separation processing is carried out on the gasified slag, and impurity-containing porous silicon and porous carbon are formed from the primarily separated gasified slag; 2, the obtained porous carbon is subjected to secondary separation processing, and porous carbon particles and fine sand are formed by the porous carbon subjected to secondary separation; 3, primary dehydration processing is carried out on the obtained porous carbon particles, and the porous carbon particles subjected to the primary dehydration processing form water-containing porous carbon and fine powder; 4, secondary dehydration processing is carried out on the obtained high-purity porous carbon to form anhydrous porous carbon; 5, the obtained fine powder is dehydrated to form carbon powder; 6, the obtained fine sand is dehydrated to form carbon sand; and 7, the obtained porous silicon is sequentially subjected to primary separation processing, centrifugal dewatering processing and vibrating screen separation processing, and carbon sand and porous silicon are formed through vibrating screen separation processing. According to the flushing process, reutilization of the gasified slag can be realized, and secondary pollution to the environment is avoided.

Description

technical field [0001] The invention relates to the technical field of underwater gasification slag treatment technology, in particular to a cyclone washing process for coal chemical gasification slag. Background technique [0002] The characteristics of my country's energy structure rich in coal, poor in oil, and low in gas, the actual situation of high dependence on foreign oil and natural gas, and the emphasis on efficient and clean utilization of coal have given opportunities for the development of the coal chemical industry. As the leading coal gasification technology in the coal chemical industry flourish in China. With the large-scale promotion of coal gasification technology, the stockpiling and production of coal gasification slag are increasing, causing serious environmental pollution and waste of land resources, and adversely affecting the sustainable development of coal chemical enterprises. Coal gasification slag Processing is imminent. [0003] Coal gasificati...

AI Technical Summary

Problems solved by technology

[0004] At present, the large-scale disposal and utilization of coal gasification slag mainly focuses on construction materials and ecological management, but due to its high carbon content and high impurity content, the content of construction materials is low, the quality is unstable, and the secondary pollution of ecological management is serious. and other issues, poor economic and environmental benefits

In terms of resource utilization, combined with the characteristics of coal gasification slag resources, it has attracted widespread attention in the development and utilization of carbon materials, the preparation of ceramic materials, and the preparation of aluminum / silicon-based products. Although the economic benefits are relatively significant, they are all in the laboratory research or In the expansion test stage, there are mainly problems such as high cost, complicated process, difficult to control impurities, and small downstream market, which makes it impossible to realize large-scale utilization

Images