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
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[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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