Gas-solid-liquid separation and purification system for agricultural and forestry biomass material gasified gas

Abstract

The invention discloses a gas-solid-liquid separation and purification system for agricultural and forestry biomass material gasified gas. The gas-solid-liquid separation and purification system comprises four parts of a dry dedusting system, a wet washing system, a condensation separation system and a purification and dehumidification system. The dry dedusting system comprises a gas feeding pipe, a cyclone separator and a gravity check valve. The wet washing system comprises a spray tower, a washing tower, a cooling circulation tank matched with the washing tower, a mesh belt-type slag remover and an in-line pump. The condensation separation system comprises a tubular screw-type condenser, a cooling tower, a water tank and an in-line pump. The purification and dehumidification system comprises a wire gauze filter, a blower fan and a purification tower. The gas-solid-liquid separation and purification system is scientific and reasonable, utilizes the tubular screw-type condenser to replace a coil tube-type condenser, a return tube-type or a needle tube-type condenser, and is convenient for use and maintenance. Through the gas-solid-liquid separation and purification system, gas produced by biomass pyrolysis can be fully separated and purified thereby reaching requirements on gas for an internal combustion engine and on gas feeding of an internal combustion engine, and continuous and stable gas feeding is formed.

Description

technical field [0001] The invention relates to a gas-solid-liquid separation and purification system for the gasification gas of agricultural and forestry biomass materials, and belongs to the technical field of manufacturing and using pyrolysis gas gas-liquid separation and purification equipment. Background technique [0002] At present, the main equipment used for gasification and liquid separation of agricultural and forestry biomass materials includes cyclone separator, coil type condensation separator or return pipe type condensation separator, spraying device, etc., and two problems have been encountered in practical application: one The existing gas-liquid separation equipment has poor condensation and separation effect. The gas in the coil type or return pipe type condensation separator passes through the coil pipe or return pipe leading to cooling water from a large space, and the cooling uniformity is low, and the condensed liquid The phase contains tar that adhe...

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Problems solved by technology

[0002] At present, the main equipment used for gasification and liquid separation of agricultural and forestry biomass materials includes cyclone separator, coil type condensation separator or return pipe type condensation separator, spraying device, etc., and two problems have been encountered in practical application: 1. The existing gas-liquid separation equipment has poor condensation separation effect. The gas in the coil type or return pipe type condensation separator passes through the coil or return pipe leading to cooling water from a large space, the cooling uniformity is low, and the condensed liquid The phase contains tar that adheres to the surface of the cooling water pipe, which affects heat transfer and leads to poor condensation effect and high tar content; second, the gas has a high moisture content after spraying forests, so that the quality of combustible gas cannot be guaranteed, affecting gas supply and power generation quality

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