Heat storage and exchange device for gas heater of coal pyrolyzing furnace

Abstract

The invention discloses a heat storage and exchange device for a gas heater of a coal pyrolyzing furnace. The heat storage and exchange device comprises two sets of heat storage chambers, two sets of heat storage members, two sets of air inlet branch pipes and two sets of combustion waste gas discharging branch pipes; a first heat storage chamber is arranged in a furnace body outer wall, a first heat storage member is arranged in the first heat storage chamber, one end of the first heat storage chamber leads to the bottom of a first combustion chamber, and the other end of the first heat storage chamber is respectively connected with a first air inlet branch pipe and a first combustion waste gas discharging branch pipe; a second heat storage chamber is arranged in the furnace body outer wall, a second heat storage member is arranged in the second heat storage chamber, one end of the second heat storage chamber leads to the bottom of a second combustion chamber, and the other end of the second heat storage chamber is respectively connected with a second air inlet branch pipe and a second combustion waste gas discharging branch pipe; and combustion chamber through holes are arranged between the first combustion chamber and the second combustion chamber. According to the heat storage and exchange device for the gas heater of the coal pyrolyzing furnace, air entering the combustion chambers of the gas heater can be heated, the combustion efficiency of gases in the combustion chambers is improved, hot waste gases obtained after gas combustion in the combustion chambers can be used for heat storage, additional heat sources are not required, and coking costs are saved.

Description

technical field [0001] The invention relates to a gas heater of a gas heating device, in particular to a heat storage heat exchanger of a gas heater which utilizes clean coal gas recovered and purified from raw coal gas produced in the coal pyrolysis process for combustion. Background technique [0002] At present, most coal pyrolysis furnaces (coke ovens) on the market adopt batch-type coking, and the process steps such as the proportion of coal into the furnace, dehydration, coal feeding, preheating, carbonization, coke reforming, and CDQ are relatively independent and cannot be carried out. Continuous production, low production efficiency; In addition, the raw coal gas produced in the coal pyrolysis process contains many useful components, such as H 2 S, HCH and other acid gases, NH 3 Alkaline gas, tar, benzene, naphthalene, washing oil and other organic substances do not have a complete process for exporting, recovering and purifying raw gas. [0003] This impels the i...

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Problems solved by technology

[0002] Most coal pyrolysis furnaces (coke ovens) currently on the market adopt batch-type coking. Coke upgrading, dry quenching and other process steps are relatively independent, continuous production cannot be carried out, and production efficiency is low; in addition, the

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