Internal combustion heating device of coal pyrolyzing furnace

Abstract

The invention discloses an internal combustion heating device of a coal pyrolyzing furnace. The internal combustion heating device comprises a coke quenching waste gas heater, and more than one group of third gas heater and fourth gas heater which have the same structure and are mutually related, wherein the coke quenching waste gas heater comprises an inner flame path, a primary air supplementing pipe, a secondary air supplementing pipe, a central ring wall and a central channel, and the inner flame path is separated into more than one group of main inner flame path and auxiliary inner flame path; the auxiliary inner flame path is divided into an upper section, a middle section and a lower section, the upper-section auxiliary inner flame path, the lower-section auxiliary inner flame path and the main inner flame path are used for air supplementing, combusting and heating by the high-temperature combustible waste gas produced by dry quenching, combustion chambers of the mutually related third gas heater and fourth gas heater are arranged in the middle-section auxiliary inner flame path, clean gas purified and recycled from crude gas is combusted for supplementing heating in the middle-section auxiliary inner flame path so as to make up the insufficient combustion capacity of the high-temperature combustible waste gas, sufficient temperature and heat are provided for coal antipyresis carbonization without additional heating energy-consuming devices, the internal combustion heating device is environment-friendly and is economical, and the coking cost is reduced.

Description

technical field [0001] The invention relates to a gas combustion heating device, in particular to a combustion heating device which utilizes gas generated by dry extinguishing and pyrolysis of a coal pyrolysis furnace. 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 inventors to explore and innovate a complete set of conti...

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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 raw coal gas generated during coal pyrolysis contains many useful components, such as H2S , HCH and other acid gases, NH3 basic gas, tar, benzene, naphthalene, washing oil and other organic substances, there is no complete process for exporting, recycling and purifying raw gas

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