Recycling system of smoke gas energy for realizing high-temperature and low-oxygen combustion

Abstract

The invention relates to a recycling system of smoke gas energy for realizing high-temperature and low-oxygen combustion, belonging to the technical field of industrial furnaces. The system comprises a heating furnace, a continuous heat recovering apparatus, a chimney, a high-pressure blower, a coal gas compressor and a high-temperature and low-oxygen combustor; high-temperature smoke gas generated by the heating furnace firstly enters the continuous waste heat recovering apparatus deposited in the middle of a gas duct so that funnel temperature of the smoke gas is reduced to above dew point temperature via absorbing physical heat of the smoke gas, the smoke gas is discharged via the chimney; in the opposite direction of smoke gas flow, air and coal gas are pumped from the other end of the continuous heat recovering apparatus via the high-pressure positive blower and the coal gas compressor; the continuous residual heat recovering apparatus pre-heats the cold air and cold coal gas at 550 DEG C to 900 DEG C in contra-flow with the smoke gas. High-temperature air, high-temperature coal gas and partial smoke gas are organized to be combusted by the high-temperature and low-oxygen combustor, thereby realizing stable combustion in low-oxygen condition and reducing oxidation loss of iron works. The invention has the advantages of solving the problem of high energy consumption of industrial furnace, low yield and having obvious economic and social benefits.

Description

A flue gas energy recycling system that realizes high-temperature low-oxygen combustion technical field The invention belongs to the technical field of industrial furnaces, in particular to a flue gas energy recycling system for realizing high-temperature and low-oxygen combustion. The flue gas energy recycling system applies high-temperature air low-oxygen combustion technology and continuous preheating technology to achieve high-efficiency combustion and low pollutant emissions. technical background The production process of industrial furnaces has the characteristics of high energy consumption, high pollution and low yield. Engineers and technicians have been seeking various energy-saving and material-saving measures in terms of improving combustion equipment and recovering flue gas waste heat, so as to improve the fuel utilization rate of the furnace and reduce the oxidation and burning loss of steel parts under high-temperature furnace conditions. (1) Generally, the...

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Problems solved by technology

The purpose of the present invention is to provide a flue gas energy recycling system that realizes high-temperature low-oxygen combustion, uses the flue gas waste heat circulation system to continuously preheat the air at high temperature, and reduces the oxidizing atmosphere of combustion to greatly reduce the oxidation of steel parts Burning loss rate, solve the problems of high energy consumption and low yield of industrial furnaces

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