Equipment and method for freezing and dehumidifying gas used in steel rolling heating furnace

Abstract

The invention provides an equipment and method for freezing and dehumidifying coal gas for a steel rolling heating furnace, and belongs to the technical fields of steel hot rolling and coal chemical. The equipment comprises a heat transfer unit, a gas drainer, a lithium bromide cooling compressor unit, a humidity and temperature detecting system and a pipe system platform, wherein the heat transfer unit is provided with a gas / gas heat exchanger and a gas / water heat exchanger, a water tank for storing water is arranged blow the gas drainer, the lithium bromide cooling compressor unit is provided with a steam input pipeline, a cooling water inlet and outlet pipeline and a lithium bromide cooling-water unit, the humidity and temperature detecting system is provided with a temperature and humidity transmitter, a data transmission line, a data processing unit and a display screen, and the pipe system platform is a whole device for carrying the whole coal gas, steam, discharge pipe lines and heat transfer unit. According to the method, a complete set of dehumidification system for effectively freezing and dehumidifying wet coal gas is built, and it is ensured that the problem of dehumidifying the coal gas conveyed to the heating furnace can be solved to improve the heat value of the coal gas, moreover, coil decarberuzation is further reduced, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical fields of steel hot rolling and coal chemical industry, in particular to a device and method for freezing and dehumidifying gas used in a steel rolling heating furnace. Background technique [0002] With the development of the iron and steel industry in recent years, the product quality requirements for rods and wires are getting higher and higher. At present, most heating furnaces in rolling mills use converter gas for heating. Due to the decarburization problem of wire rod products, after analysis, the high water content of converter gas increases the burning loss of products. 1. One of the main reasons for serious decarburization is that there will be problems with the surface quality of the product, which will cause problems such as distortion and cracking of rods and wires and other internal quality problems, which seriously hinder the improvement of product grades. Research on gas dehumidification is very im...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a kind of equipment and method for freezing and dehumidifying the gas used in the steel rolling heating furnace to reduce the moisture content of the hot and humid converter gas, so as to solve the problem of increased burning loss of existing products, serious decarburization, and product surface quality. There will be problems, and the internal quality of the rods and wires will be twisted, cracked, etc.

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