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Biomass spiral pyrolysis device and pyrolysis process

A biomass and pyrolysis technology, which is applied in the petroleum industry and the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of restricting the promotion of pyrolysis technology and low added value, and achieve the effects of convenient storage and transportation, controllable components, and easy extraction

Inactive Publication Date: 2010-05-19
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, the bio-oil obtained can only be used as a low-grade fuel, and the added value is relatively low, which limits the promotion of pyrolysis technology

Method used

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  • Biomass spiral pyrolysis device and pyrolysis process
  • Biomass spiral pyrolysis device and pyrolysis process

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Embodiment 1

[0030] see figure 1 One end of the cylinder body 5 of the garden cylindrical reactor is flange-shaped, and the two ends of the outer sleeve 6 that plays a role in heat insulation are also flange-shaped, and the cylinder body 5 and the outer sleeve 6 are nested together, adding The upper, left, and right end covers 4, 11 and the threaded connectors form a whole. There is a large enough gap between the inner wall of the outer sleeve 6 and the outer wall of the cylinder body 5. Four electric heating plates 8 are arranged in this gap and surrounded by on the outer wall of the barrel 5. The electric heating plate is a 4×1KW electric heating plate with adjustable power, which is controlled by four thermocouples 9 respectively. After reaching the set temperature, the heating power is automatically reduced, so the reaction temperature in the reactor can be effectively controlled at a certain temperature. range (500-550°C). Four thermocouples independently control four heating plates...

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Abstract

The invention relates to a biomass pyrolysis device and a process thereof. The device comprises a charging system, a spiral pyrolysis reactor and a product collection system, wherein a rotating shaft which is communicated with a variable-frequency motor and provided with a spiral propeller is arranged in center holes on two end covers of a cylinder body of the reactor; the side wall of the cylinder body is provided with a biomass feed pipe and a pyrolysis product outlet pipe; the outlet pipe is vertically extended into a coke collection tank; and the coke collection tank are communicated with a condenser, a bio-oil collection tank and a tail gas discharge pipe in turn through an air outlet pipe on the side wall. The process comprises the following technological processes: firstly, starting an external heating system to ensure that the temperature in a reactor is between 500 and 550 DEG C; secondly, putting biomass granular raw materials into the reactor through an inlet pipe, simultaneously starting the variable-frequency motor, and determining the rotating speed n of the variable-frequency motor according to the set residence time t, and the axial length L and the screw pitch l of the spiral propeller; and finally, starting the pyrolysis product collection system. The biomass pyrolysis device can accurately control the pyrolysis time and control the pyrolysis temperature in a partitioning mode so that the obtained bio-oil components are controllable and are easy to extract chemical products.

Description

technical field [0001] The invention relates to a biomass pyrolysis device and a pyrolysis process. Background technique [0002] At present, all countries in the world, especially developed countries, are devoting themselves to the development of highly efficient and non-polluting biomass energy utilization technologies to protect their own mineral energy resources in order to provide a fundamental guarantee for the sustainable development of the national economy. Biomass pyrolysis means that biomass is heated to more than 500°C in the absence of oxidants (air, oxygen, water vapor, etc.) or only limited oxygen is provided, and biomass macromolecules (lignin, Cellulose and hemicellulose) are decomposed into smaller molecular fuel substances (solid carbon, combustible gas, bio-oil) thermochemical conversion technology method. The fuel energy conversion rate of biomass pyrolysis can reach 95.5%, which can maximize the conversion of biomass energy into energy products and make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
Inventor 江鸿郭庆祥俞汉青
Owner UNIV OF SCI & TECH OF CHINA
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