Safe utilization system and method of coking fly dust

Abstract

The invention discloses a safe utilization system of coking fly dust. The system comprises a collection system, a powdering system, a grinder, a main pipe, a powdering pipeline assembly and a maintenance pipeline assembly, wherein the grinder is internally provided with the powdering system, the powdering system is internally provided with a temperature measuring instrument and a first oxygen content detector; the top of the powdering system is provided with a dust outlet communicated with the collection system, the lower portion of the powdering system is communicated with an inlet of the main pipe, and an outlet of the main pipe is respectively communicated with the powdering pipeline assembly and the maintenance pipeline assembly; and the main pipe is provided with a second oxygen content detector and a main switch valve. The safe utilization system of the coking fly dust has the advantages that the whole structure is simple, the cost is low, the operation is stable and reliable, and the professional technical problem that the safe utilization of the fly dust is difficult is effectively solved.

Description

technical field [0001] The invention relates to the technical field of iron and steel dust removal ash recycling, in particular to a coking dust removal ash safe utilization system and control method. Background technique [0002] In recent years, CDQ technology has been widely used at home and abroad. During the CDQ process, a large amount of CDQ dust is produced for blast furnace injection, which can not only save anthracite consumption, reduce ironmaking costs, but also reduce pollutant emissions. , It has high operability and considerable profit for blast furnace production. However, the safe, green and efficient utilization of coking dust has always been a technical problem in the industry. At present, the utilization technology mainly has the following problems: 1. In the process of adding dust to the mill, if too much oxygen is brought in, it will increase the burden on the system; When the oxygen reaches a certain ratio, it will cause the pulverized coal to burn and...

AI Technical Summary

Problems solved by technology

However, the safe, green and efficient utilization of coking dust has always been a technical problem in the industry. At present, its utilization technology mainly has the following problems: 1. When the dust is added to the mill, if too much oxygen is brought in, it will increase the burden on the system; When the oxygen reaches a certain ratio, it will cause the pulverized coal to burn and cause production accidents; 2. The dust removal and ash mill is in a relatively closed space, and there are safety hazards such as suffocation and fainting during the maintenance process of the mill.

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