Preparation method of pig manure bio-oil, bio-asphalt prepared from pig manure and application

A bio-asphalt and bio-oil technology, which is applied in the petroleum industry, fat production, building construction, etc., can solve problems such as pig manure solid waste pollution, achieve good application and promotion prospects, improve stability, and solve the shortage of asphalt resources. Effect

Pending Publication Date: 2020-12-11
CHANGAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a method for preparing pig manure bio-oil, which solves the pollution problem caused by pig manure solid waste and realizes high value-added utilization of pig manure. It has important environmental protection and economic value, and is simple Easy to operate, efficient and convenient, low cost of raw materials

Method used

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  • Preparation method of pig manure bio-oil, bio-asphalt prepared from pig manure and application
  • Preparation method of pig manure bio-oil, bio-asphalt prepared from pig manure and application
  • Preparation method of pig manure bio-oil, bio-asphalt prepared from pig manure and application

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preparation example Construction

[0031] The preparation method of pig manure bio-oil provided by the invention may further comprise the steps:

[0032] 1) Pig manure particles are obtained after pretreatment;

[0033] 2) After the pig manure particles are preheated, the preheated pig manure particles are pyrolyzed and liquefied using a rapid pyrolysis liquefaction process to obtain pig manure bio-oil.

[0034] In the present invention, the pretreatment process of pig manure in step 1) is that after drying the pig manure at 85-100° C., it is pulverized to obtain pig manure particles. The particle size of pig manure particles is 0.5-2mm.

[0035] In the present invention, the thermal cracking and liquefaction process of pig manure in step 2) is that the pig manure particles pass through the fluidized bed reactor from bottom to top under the action of nitrogen, and the pig manure particles and the fluidized bed reactor in the anaerobic environment The quartz stone is heated and preheated. During the process of...

Embodiment 1

[0042] In the present embodiment, the preparation method of pig manure bio-oil comprises the following steps:

[0043] 1) Pig manure is dried at 100°C and crushed to powdery pig manure particles with a diameter of 2mm;

[0044] 2) Under the conditions of a temperature of 400° C. and a reaction time of 1 s, pig manure is pyrolyzed and liquefied to obtain pig manure bio-oil.

[0045] The specific process of pyrolysis liquefaction is: under the action of nitrogen, the dehydrated and pulverized pig manure particles quickly pass through the fluidized bed reactor from bottom to top. Rapidly heat up to 400°C at a heating rate of 1000°C / s. During the rapid temperature rise and preheating process, the pig manure particles will undergo pyrolysis and liquefaction in 1 second, and the gas generated (the composition of the gas includes CO, H 2 、CH 4 Composite gas) is driven by nitrogen to move the two-stage cyclone separation device. The solid product biochar contained in the gas is sepa...

Embodiment 2

[0049] In the present embodiment, the preparation method of pig manure bio-oil comprises the following steps:

[0050] 1) Pig manure is dried at 90°C and crushed to powdery pig manure particles with a diameter of less than 0.5mm;

[0051] 2) Under the conditions of a temperature of 400° C. and a reaction time of 2 s, pig manure is pyrolyzed and liquefied to obtain pig manure bio-oil.

[0052]The specific process of pyrolysis liquefaction in this embodiment is: the pig manure particles that have been dehydrated and pulverized are passed through the reactor of the fluidized bed from bottom to top under the action of nitrogen, and the pig manure particles and the reactor in the anaerobic environment The hot quartz stone is rapidly heated up to 400°C at a heating rate of 1000°C / s. During the rapid heating and preheating process, the pig manure particles will undergo pyrolysis and liquefaction in 2 seconds, and the generated gas (the composition of the gas includes CO, h 2 、CH 4...

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Abstract

The invention belongs to the technical field of road engineering asphalt materials, and relates to a preparation method of pig manure bio-oil. The preparation method comprises the steps of 1) pretreating pig manure to obtain pig manure particles; 2) pyrolyzing and liquefying the pig manure particles obtained in the step 1) by adopting a rapid thermal cracking and liquefying process to obtain bio-oil prepared from pig manure, so that the pollution problem caused by pig manure solid wastes is solved, the high-added-value utilization of the pig manure is realized, and the method has important environmental protection and economic values; and the biological asphalt prepared from pig manure is obtained by replacing matrix asphalt with pig manure bio-oil and is used for road pavement, so that asphalt can be replaced by a sustainable road building material, and the problem of asphalt resource shortage caused by petroleum resource exhaustion is solved. The preparation method has the advantagesof simple preparation, easy operation, high efficiency, convenience, low raw material cost, better pavement performance, resource saving, environmental protection, cyclic utilization of wastes, and good application and popularization prospects.

Description

technical field [0001] The invention belongs to the technical field of asphalt materials for road engineering, and relates to a preparation method of pig manure bio-oil, bio-asphalt prepared from pig manure and its application. Background technique [0002] With the development of the economy and the highway industry, the consumption of asphalt continues to increase, and the main source of asphalt binder for roads is oil. According to statistics, the current oil demand and consumption trend, the proven oil reserves in the world are only enough Therefore, oil is facing a crisis of imbalance between supply and demand, which makes researchers find more substitutes for petroleum asphalt. [0003] At present, the pig breeding industry is upgrading towards scale and refinement. One of the problems faced by large-scale pig farming is how to deal with a large amount of pig manure, how to improve the recycling value of pig manure solid waste, and realize the high added value of pig m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/00C11B1/02C10L1/02C08L95/00C08L91/00
CPCC11B1/00C11B1/02C10L1/02C08L95/00C08L91/00Y02W30/74
Inventor 张久鹏王玲王慧吕磊景宇飞王瑞林周维锋贺文栋张明亮张宏飞
Owner CHANGAN UNIV
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