Raw gas waste heat recycling and exchanging unit of anti-bonding gravity-flowing coke oven

Abstract

The invention discloses a raw gas waste heat recycling and exchanging unit of an anti-bonding gravity-flowing coke oven, and belongs to the technical field of recycling raw gas waste heat produced in the coking process. A heat exchange unit body comprises a plurality of single-row components, the plurality of the single-row components are arranged in same spaces and fixed together to form a cuboid structural heat exchange unit body, the single-row components are formed by welding heat exchange vertical pipes, heat exchange transverse pipes and heat exchange working medium conveying pipes in a permutation and combination way. Non-viscous coatings are coated on the surfaces of the single-row components, and the heat exchange unit body is inclined upwards along a horizontal plane. According to the arrangement, the tar bonding problem, which is produced in the process of recycling the raw gas waste heat, is solved; and meanwhile, recycled tar is reused, and resources are saved. According to the raw gas waste heat recycling and exchanging unit of the anti-bonding gravity-flowing coke oven, after heat is exchanged, the discharge temperature of the raw gas is reduced below 250 DEG C, the heat exchange effect of the raw gas is greatly improved, effective sensible heat in the raw gas is completely recycled, heat waste is prevented, and requirements on energy conservation and emission reduction are met.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery and utilization of raw gas in the coking process, and more specifically relates to a heat exchange unit for recovering waste heat of raw gas in an anti-bonding artesian coke oven. Background technique [0002] At present, the energy consumption of the iron and steel industry is huge, and the waste heat recovery of coke oven waste gas is a major concern of iron and steel energy conservation work. It is the main energy-saving direction for building resource-saving and environmentally friendly green coking plants, and it is also one of the main ways to reduce coke oven energy consumption. . Judging from the distribution of heat loss in the coking process, the waste heat contained in raw coal gas accounts for about 36% of the total heat, which is equivalent to the sensible heat brought out by the red coke released from the carbonization chamber. It is recovered from the mature CDQ technolo...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem in the prior art that components such as tar are easily bonded to the heat exchange device after condensation during waste heat recovery of raw coal gas in the prior art, and provide a heat exchange unit for recovery of waste heat from raw coal gas of an anti-bonding self-flowing coke oven , which effectively solves the problem that the tar on the surface of the heat exchange tube is easy to stick and coke in the process of waste heat recovery and utilization of coke oven waste gas, and recycles and utilizes the tar produced in the process of waste heat recovery and utilization of coke oven waste gas

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