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Low-cost and pollution-less biomass liquefying process and equipment

A biomass and non-polluting technology, applied in the petroleum industry, the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of complex liquefier structure, environmental secondary pollution, unfavorable industrialization, etc., and achieve easy popularization and application without secondary pollution , low cost effect

Inactive Publication Date: 2003-05-14
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

The common disadvantages in the prior art are: (1) high-quality energy is consumed to heat the intermediate heat carrier, which makes the liquefaction cost higher and unfavorable for industrialization; (2) the solid heat carrier and the biomass to be liquefied must be mixed evenly, so that the liquefier The structure is complex and easy to wear; (3) If the used heat carrier is not handled properly, it is easy to cause secondary pollution to the environment

Method used

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  • Low-cost and pollution-less biomass liquefying process and equipment
  • Low-cost and pollution-less biomass liquefying process and equipment
  • Low-cost and pollution-less biomass liquefying process and equipment

Examples

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Embodiment Construction

[0013] Further description will be made below in conjunction with the embodiments and accompanying drawings.

[0014] Gasifier 1 adopts the existing fixed bed downdraft type, with a rated gas production of 400m 3 / hr, the temperature of the outlet gas can be adjusted by changing the air volume of the most downstream fan (550°C in this example). The high-temperature anaerobic combustible biogas from the outlet of the gasifier is directly introduced into the bottom of the liquefier 4 (the feeding rate is about 400kg / hr according to the rated gas production), and at the same time, the crushed biomass in the raw material cylinder 2 (using 0.8mm or so sawdust) is also sent into the bottom of the liquefier via the screw material conveyor 3 (the feeding rate is 150kg / hr). According to the feeding rate of the aforementioned pulverized biomass and biogas, it can be seen that the mass mixing ratio of the two is about 1:2.7. The liquefier is made of stainless steel and is in the shape ...

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Abstract

The present invention relates to biomass utilizing treatment, especially the technological process and equipment to utilize biomass in producing liquid fuel. The gasified product of biomass is utilized in heating, so that the biomass to be liquefied obtains heat without using intermediate solid heat carrier. The complete liquefied process includes mixing of crushed biomass with biological gas, cracking of the crushed biomass, the separation between and collection of the biological oil and the biological gas. The liquefying equipment consists of mainly biomass gasifying furnace, biomass liquefier, gas-solid separator and condensator. The process of the present invention is resonable technologically, simple in equipment structure, has no secondary pollution and other advantages.

Description

Technical field: [0001] The invention relates to a process and a device for biomass utilization treatment, in particular to a process and a device for generating liquid fuel from biomass. Background technique: [0002] Biomass is a carbonaceous material. Biomass utilization mainly refers to the conversion of various crop straws and agricultural and forestry organic residues into efficient and high-quality oil or gas resources. Among them, biomass liquefaction refers to the rapid high-temperature pyrolysis of biomass in the absence of oxygen, so that most of the organic matter is converted into liquid fuel (ie, bio-oil). The main uses of bio-oil are: (1) to directly replace mineral oil for combustion in oil-fired boilers or other burners; (2) to refine chemical products as industrial raw materials; (3) to replace diesel gasoline for internal combustion engines after modification. The key to biomass liquefaction is to provide the required heat source in the absence of oxygen...

Claims

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Application Information

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IPC IPC(8): C10G1/00
Inventor 朱锡锋
Owner UNIV OF SCI & TECH OF CHINA
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