Coke oven ascension pipe waste heat recovery device

Abstract

The invention discloses a coke oven ascension pipe waste heat recovery device, and belongs to the field of coke-making equipment. A desalting water tank is connected with a buffer tank through a pipeline, a make-up water pump is arranged on the connecting pipeline of the desalting water tank and the buffer tank, the buffer water tank is connected with a heat exchanger through the pipeline, a water-feeding pump is arranged on the connecting pipeline of the buffer tank and the heat exchanger, a deaerator is connected with the heat exchanger through the pipeline, the heat exchanger is connected with a steam drum through a forced circulation pump, and the steam drum outputs steam. According to the coke oven ascension pipe waste heat recovery device, heat in raw coke oven gas is converted for steam heating and other use through heat exchange pipes, so that the heat in the raw coke oven gas is recycled, energy is saved and waste of heat can be reduced; and the fire-resistant ceramic is arranged on the wall of inner cylinder of the heat exchanger, so that the high-temperature corrosion of the coke oven ascension pipe waste heat recovery device caused by the raw coke oven gas is prevented,the growth of graphite is greatly reduced, the heat exchange efficiency is improved, and the production stability is guaranteed.

Description

technical field [0001] The invention relates to the field of coking equipment, in particular, the invention relates to a coke oven riser waste heat recovery device. Background technique [0002] There is a large amount of waste heat in the coking production process, among which: the sensible heat of coke accounts for 37% to 40%, the sensible heat of waste gas accounts for 18% to 20%, the sensible heat of raw coal gas accounts for 30% to 35%, and the total waste heat of the three items accounts for about 90%. , which accounts for nearly 70% of the energy consumption of coking production. No matter for coking enterprises or waste heat recovery equipment manufacturers, coke oven raw gas waste heat recovery is a direction worthy of attention and investment, and has broad market prospects. At present, most coke ovens use the method of spraying ammonia water to cool the raw coal gas. While cooling the raw coal gas at 600-750 °C to 80-100 °C, only a large amount of ammonia water at...

AI Technical Summary

Problems solved by technology

At present, most coke ovens use the method of spraying ammonia water to cool the raw coal gas. While cooling the raw coal gas at 600-750 °C to 80-100 °C, only a large amount of ammonia water at about 80 °C is produced, resulting in a large amount of raw gas in the raw gas. The medium-temperature waste heat is wasted, and the circulation of a large amount of ammonia water consumes a large amount of electric energy

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