Spiral push type biomass continuous thermal pyrolysis multi-stage reaction device and method

A multi-stage reaction and helical propulsion technology, which is applied in special forms of dry distillation, gas purification of condensed non-gaseous materials, petroleum industry, etc., can solve the problems of energy loss, lower reactor temperature, high manufacturing cost, etc., and achieve simple design and easy removal Coke, productivity improvement effect

Inactive Publication Date: 2018-04-13
DALIAN MARITIME UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The thermal cracking reaction of biomass needs to be completed under the condition of isolation of air. In the continuous production process of the existing technology, nitrogen is usually passed into the reactor to control the content of oxygen. The main disadvantage of this method is to increase the production cost of using nitrogen At the same time, it will also increase the energy consumption per unit of product. The introduction of nitrogen will reduce the temperature of the reactor and cause some energy loss; instead of using the production process of introducing nitrogen, the equipment structure is complex, the manufacturing cost is high, and the maintenance cost is high. Guaranteed continuous production, at the same time, a large number of coking problems will occur, which will increase the cost of decoking

Method used

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  • Spiral push type biomass continuous thermal pyrolysis multi-stage reaction device and method

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Embodiment 1

[0034] Attached to the invention figure 1 The shown spiral propulsion type biomass continuous pyrolysis multi-stage reaction device includes a first-stage reactor, a second-stage reactor and a third-stage reactor vertically arranged from top to bottom; the first-stage reactor, the second-stage The reactor and the third-stage reactor are connected in series from end to end, specifically: a crawler conveyor I2 is also arranged upstream of the first-stage reactor; an exhaust hole 4 is provided at the outlet pipe wall of the crawler conveyor I2 . The top at one end of the primary reactor is provided with a feed port 6, and the feed port 6 communicates with the outlet of the crawler conveyor 12; the bottom of the other end of the primary reactor is provided with a primary outlet 11;

[0035] The feed port 6 is connected to the fully enclosed crawler conveyor I2, and the material is transported by the crawler conveyor I2 and falls into the primary reactor through the feed port 6. ...

Embodiment 2

[0048] The method for using the device described in the above-mentioned embodiment 1 is as follows:

[0049] Using rice husks with a water content of 11% as raw materials, the device disclosed by the invention is used for continuous thermal cracking of rice husks to produce biochar, bio-oil, wood vinegar and clean gas. The rice husk is transported to the entrance of the primary reactor (I) by a conveyor belt, and falls freely into the primary reactor by gravity. The temperature in the heating zone of the primary reactor is maintained at 150°C ± 10°C, and the material runs inside the reactor ( The preheating) time is 6 minutes, and the running time is controlled by the control motor. After preheating, the material enters the secondary reactor (II) through the secondary feed port 11, and the temperature in the heating zone of the secondary reactor is maintained at 500 ° C ± 10 ℃, the material running (thermal cracking) time is 6 minutes, the cracked product enters the interior o...

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Abstract

The invention discloses a spiral push type biomass continuous thermal pyrolysis multi-stage reaction device and method. The device mainly comprises a biomass conveying unit, a biomass thermal pyrolysis multi-stage reactor unit, a biomass carbon conveying unit, and a thermal pyrolysis gas and bio-oil and pyroligneous liquor separation and collection unit, wherein a multi-stage reactor is of a three-stage structure, namely a biomass preheating unit, a biomass thermal pyrolysis unit and a biomass carbon conveying and thermal pyrolysis gas, pyroligneous liquor and bio-oil output unit. After preheating and thermal pyrolysis reactions, biomass carbon and a thermal pyrolysis gas are generated from biomass in the device, solid / gas separation (biomass carbon / fume) and oil / water separation (bio-oil / pyroligneous liquor) are achieved through the three-stage reactor, and finally biomass carbon, bio-oil, pyroligneous liquor and a clean combustion gas are finally produced, The device is simple in structural design, no nitrogen needs to be introduced, continuous production is achieved, coking can be reduced, and coke can be conveniently removed.

Description

technical field [0001] The present invention relates to biomass regeneration and high-efficiency clean utilization, in particular to a spiral propulsion type biomass continuous pyrolysis multi-stage reaction device and a method for producing biochar, clean gas, bio-oil and wood vinegar, and finally realizes the regeneration of biomass and exploit. Background technique [0002] There are many types of biomass resources, huge quantities, and wide distribution, mainly including crop waste such as straw, livestock and poultry manure, energy plants, firewood fuel, and urban waste. Some biomass resources can be used for feed, fertilizer, papermaking, edible fungus base material and fuel, etc., but there are still a large number of biomass resources that have not been fully and effectively utilized, and a large amount of straw is still burned every year, causing environmental pollution and waste of resources Therefore, the development of biomass resource utilization technology is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B57/02C10K1/04
CPCC10B53/04C10B57/02C10K1/04C10K1/046
Inventor 李清波李泽宇林立刚
Owner DALIAN MARITIME UNIVERSITY
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