Anti-blocking control system for coal spray branch pipes of distributor of coal spray system of blast furnace

Abstract

The invention discloses an anti-blocking control system for coal spray branch pipes of a distributor of a coal spray system of a blast furnace, which comprises a distributor, a plurality of coal spray branch pipes and a controller, wherein the distributor is used for distributing pulverized coal from a main coal spray pipe to the plurality of coal spray branch pipes; and the plurality of coal spray branch pipes are used for sweeping through a circulating sweeping way in a circulating sweeping cycle under the control of the controller. According to the control system adopting the circulating sweeping for the coal spray branch pipes of the coal spray distributor of the blast furnace, the blocking rate of the coal spray branch pipes can be greatly reduced, the uniformity of coal spray quantity from a wind gap of the blast furnace is stabilized, the working intensity of operation staff during the production process is reduced, the level of automation is improved, the safety of production is powerfully ensured and conditions are created for stability and smooth operation of the blast furnace.

Description

technical field [0001] The invention relates to the technical field of control, in particular to an anti-blocking control system for a coal injection branch pipe of a distributor of a blast furnace coal injection system. Background technique [0002] Blast furnace coal injection technology is the central link of blast furnace system structure optimization, which has the advantages of greatly reducing coke ratio, improving economic benefits, and reducing environmental pollution. Coal injection technology, as a major trend in the development of blast furnace ironmaking technology at home and abroad, is one of the three important technical routes for the development of my country's iron and steel industry. With the development of coal injection technology in the direction of high injection rate dense phase transportation. Stable and uniform pulverized coal injection is an important basis for maintaining stable furnace temperature, ensuring smooth furnace conditions, and making...

AI Technical Summary

Problems solved by technology

For this control method, only when the branch pipe is judged to be blocked, the purge is carried out, and the blockage of the coal injection branch pipe cannot be prevented in advance, and the purge of the branch pipe is also irregular, which may easily lead to uneven and asymmetric coal injection at the tuyere of the blast furnace, thereby affecting The normal production of the blast furnace, or even damage to the furnace condition

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