Composite condensing device for vehicle-mounted biomass pyrolysis equipment

Abstract

The invention belongs to the technical field of energy chemical engineering, and particularly relates to a composite condensation device used in vehicle-mounted biomass thermal cracking equipment. The composite condensation device used in the vehicle-mounted biomass thermal cracking equipment comprises a housing (6), a top cover (1), a gas-liquid mixer (2), a cooling tube (5), a spraying device (4) and a guide tube (3). Two condensation procedures of ejection and spraying are adopted, secondary condensation can be performed on thermal cracking steam, the condensation time is shortened, secondary decomposition is avoided, and the liquid product yield is increased; a first-stage condensate partitioning area is arranged at the bottom of the housing, so that two stages of condensate can be respectively recycled; the second stage of the condensate is discharged out from a liquid outlet and is circulated by an oil pump so as to be used as a condensation medium; the internal components of the condensation equipment are compact in structure and reasonable in arrangement, the overall occupation area is effectively reduced, the condensation equipment is easy to disassemble and assemble, convenient to wash and repair, and particularly applicable to small-size thermal cracking systems or mobile operation equipment.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and in particular relates to a condensing device. Background technique [0002] Rapid condensation is a crucial link in the biomass pyrolysis liquefaction process. It is generally required that the steam generated after pyrolysis be converted from gaseous state to liquid state and non-condensable gas in the shortest possible time, so as to avoid further decomposition of steam and improve the liquid state. Product yield and quality. [0003] In the field of biomass pyrolysis liquefaction, direct contact condensation has high heat exchange efficiency and relatively simple structure, and is one of the most widely used condensation methods at present. For direct contact condensation, the commonly used condensers are sieve plate towers and spray cooling towers. The sieve plate towers are larger in size, and the sieve plate and other components are easily blocked by tar and carbon...

AI Technical Summary

Problems solved by technology

Patent 200910009121.1 discloses a spray cooling and staged condensation process and device for pyrolysis and liquefaction of biomass, coal or oil shale. Venturi-type pyrolysis gas inlet tubes are installed on the shell of the condensation tower to realize multi-stage condensation. , but requires an external heat exchanger, which does not solve the problem of large equipment volume

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