Method for preparing pyrolytic oil by co-heated pyrolysis and liquefaction of biomass and waste tire

A biomass thermal cracking and waste tire technology, which is applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of insufficient reaction and insignificant synergistic effect of co-thermal cracking, so as to achieve oil-water separation, improve effect and quality boosted effect

Inactive Publication Date: 2014-04-02
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a method for preparing pyrolysis oil by co-pyrolysis and liquefaction of biomass and waste tires, and change the production process of the prior art to solve the problem of insufficient reaction and co-pyrolysis in the process of direct blending and pyrolysis of traditional raw materials. The synergistic effect is not obvious, and the calorific value of the pyrolysis oil of the co-pyrolysis liquefaction product of biomass and waste tires is improved

Method used

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  • Method for preparing pyrolytic oil by co-heated pyrolysis and liquefaction of biomass and waste tire

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Effect test

Embodiment 1

[0028] Taking larch and automobile waste tires as an example to introduce the implementation process of the present invention is as follows:

[0029] (1) Crush the larch into particles with a particle size of 1.0 mm, and dry the crushed material so that the moisture content of the material is 8%; crush the waste tire raw material into particles with a particle size of 0.5 mm;

[0030] (2) The larch particles are subjected to pyrolysis reaction under a nitrogen atmosphere, the reaction temperature is 350°C, the reaction pressure is 0.02Mpa, and the reaction time is 2 seconds, and larch pyrolysis steam carrying larch pyrolytic charcoal is generated. performing cyclone separation on larch pyrolysis steam carrying larch pyrolysis carbon to obtain larch pyrolysis steam;

[0031] (3) The waste tire particles are subjected to pyrolysis reaction under nitrogen atmosphere, the reaction temperature is 450°C, the reaction pressure is 0.08Mpa, the reaction time is 2 seconds, and the waste...

Embodiment 2

[0037] Taking corn stalks and waste automobile tires as an example to introduce the implementation process of the present invention is as follows:

[0038] (1) Crush the raw material of corn stalks into particles with a particle size of 2.0 mm, and dry the crushed material so that the moisture content of the material is 10%; crush the raw material of waste tires into particles with a particle size of 1.0 mm;

[0039] (2) The pyrolysis reaction of corn stalk particles is carried out under nitrogen atmosphere, the reaction temperature is 400°C, the reaction pressure is 0.04Mpa, and the reaction time is 0.5 seconds, and the corn stalk pyrolysis steam carrying the corn stalk pyrolysis carbon is generated, and the The corn stalk pyrolysis steam carrying the corn stalk pyrolysis carbon is subjected to cyclone separation to obtain the corn stalk pyrolysis steam;

[0040] (3) The waste tire particles are subjected to pyrolysis reaction under nitrogen atmosphere, the reaction temperatu...

Embodiment 1 and Embodiment 2

[0045] Table 1 Example 1 and Example 2 pyrolysis oil chemical components

[0046]

[0047]

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Abstract

The invention relates to a method for preparing pyrolytic oil by co-heated pyrolysis and liquefaction of biomass and waste tire, which belongs to the technical field of biomass energy. The method comprises the following steps: respectively crushing and drying the biomass raw material and the waste tire raw material, respectively pyrolyzing the two raw materials to obtain pyrolytic steam, mixing the two types of pyrolytic steam according to certain proportion, enabling the steam mixture to pass through zeolite type solid catalyst, performing co-heated pyrolysis reaction under the action of catalyst to generate co-heated pyrolytic steam, and performing first-level condensation and second-level condensation on the co-heated pyrolytic steam to obtain the pyrolytic oil. According to the method provided by the invention, mixing proportion of the two types of pyrolytic steam is controlled by controlling flow rate thereof, the problems of deficient co-heated pyrolysis and poor pyrolysis effect caused by difference of specific gravity and thermal weight loss region between the biomass and the waste tire are solved effectively, co-heated pyrolysis effect of the biomass and the waste tire is enhanced, and quality of the co-heated pyrolysis product, namely the pyrolytic oil, is improved.

Description

technical field [0001] The invention relates to a method for preparing pyrolysis oil by co-pyrolysis and liquefaction of biomass and waste tires, belonging to the technical field of biomass energy. Background technique [0002] Both woody biomass and waste tires are important components of renewable resources. Pyrolysis liquefaction technology can be used for recycling, harmless and reduction, and has attracted extensive attention from scholars at home and abroad. Pyrolysis liquefaction is an effective way for efficient energy utilization of woody biomass. Its main product, pyrolysis oil, is rich in components and can be used as liquid fuel to replace traditional fossil resources. However, due to the high oxygen content, high acidity and low calorific value of pyrolysis oil, there are still many problems to be solved when using it directly as a power fuel. Pyrolysis liquefaction technology can recycle and reduce the amount of waste tires that are huge and difficult to handl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/10
Inventor 常建民王文亮任学勇虞宇翔司慧李露霏
Owner BEIJING FORESTRY UNIVERSITY
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