Double-layer pyrolyzing furnace

Abstract

The invention discloses a double-layer pyrolyzing furnace, and relates to the technical field of petrochemical engineering, hazardous waste treatment and the like. The pyrolyzing furnace comprises an upper-layer furnace body and a lower-layer furnace body, the upper-layer furnace body is of a vertical structure and is divided into two operation stages, the two operation stages are respectively a drying section and a primary pyrolyzing section, the drying section mainly comprises rake blades, a large disc and a small disc, the primary pyrolysis section is mainly composed of a rake arm, a scraper and the bottom face of the upper-layer furnace body, the lower-layer furnace body is of a horizontal structure, a secondary pyrolysis section is composed of a spiral shaft and the lower-layer furnace body, an upper-layer furnace body flue is arranged on the outer side of the upper-layer furnace body, an upper-layer furnace body flue inlet is formed in the bottom of the upper-layer furnace body flue, and an upper-layer furnace body flue outlet is formed in the top of the upper-layer furnace body flue. By designing the communicating upper and lower double-layer three-section pyrolyzing furnace, the thermal efficiency is improved, the problems of coking and the like in the pyrolyzing furnaces are reduced, and the continuous and stable work is realized on the basis of ensuring the air tightness and the safety.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment for petrochemical and hazardous waste treatment, in particular to a double-layer pyrolysis furnace. Background technique [0002] Pyrolysis is a process in which organic pollutants are thermally decomposed under anaerobic or anoxic conditions by utilizing the thermal instability of organic matter. [0003] The pyrolysis furnace can heat and decompose organic pollutants and make them volatilize. When the volatilized gas is cooled to normal temperature, most of the volatilized gas will condense into a liquid state, which is called pyrolysis recovered oil. A small amount of methane, ethane, etc. are still The gaseous part is called pyrolysis noncondensable gas. [0004] At present, the existing pyrolysis furnace structures at home and abroad mainly include single-layer spiral type, double-layer spiral type and rotary type. Due to the complex material composition, the spir...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems that the existing equipment is faced with materials with complex components, which are easy to coke and block during the pyrolysis process, unstable in operation, poor airtightness of the equipment, and easy to cause air to enter and cause safety accidents. A new double-layer pyrolysis furnace

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