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A method for preparing fuel oil by rapid pyrolysis of tallow oil ester assisted by continuous microwave absorber

A technology of microwave absorber and tallow oil ester, which is applied in the field of biomass energy conversion, can solve the problems of high oxygen content in pyrolysis oil, poor low-temperature fluidity, and slow pyrolysis speed, etc., and achieve low oxygen content, strong stability, responsive effect

Active Publication Date: 2016-04-13
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing preparation process has the disadvantages of slow and uncontinuous pyrolysis, high oxygen content in pyrolysis oil, high viscosity, and poor low temperature fluidity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 50g of silicon carbide and 1g of sodium hydroxide into a three-necked quartz bottle with mechanical stirring and a condenser, place it in a microwave pyrolysis instrument, raise the temperature to 400°C with a fixed power, and gradually add 100g of tallow tallow oil ester dropwise. After 30 minutes, continue Maintain 400°C catalytic cracking without formation of fractions, and microwave cracking to obtain 73g of liquid fuel.

Embodiment 2

[0019] Add 50g of silicon carbide and 5g of sodium carbonate into a three-necked quartz bottle with mechanical stirring and a condenser, place it in a microwave pyrolysis instrument, raise the temperature to 450°C with a fixed power, and gradually add 100g of tallow tallow oil ester dropwise. After 30 minutes, continue to keep No distillate was formed by catalytic cracking at 420°C, and 77g of liquid fuel oil was obtained by microwave cracking.

Embodiment 3

[0021] Add 50g of ferrite and 3g of potassium carbonate into a three-necked quartz bottle with mechanical stirring and a condenser, place it in a microwave cracking instrument, raise the temperature to 380°C with a fixed power, and gradually add 100g of tallow tallow oil ester dropwise. After 30 minutes, continue Keep 380°C for catalytic cracking without generating fractions, and microwave cracking to obtain 70g of liquid fuel.

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PUM

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Abstract

The invention relates to a method for preparing fuel by quickly pyrolyzing tallow tree oil by continuous microwave-absorbent-assisted wave absorption, which comprises the following steps: (1) weighing a microwave absorbent and a catalyst according to a mass ratio of 50:1-50:5, uniformly mixing, and adding into a reaction kettle; and (2) putting the reaction kettle in a microwave pyrolysis apparatus, heating to 300-500 DEG C, gradually and dropwisely adding the tallow tree oil, and condensing the generated vapor to continuously obtain the light brown liquid product. The method has the advantages of simple technique and high pyrolysis speed; and the pyrolytic fuel has the advantages of low oxygen content, favorable low-temperature fluidity, higher heat value and high stability.

Description

technical field [0001] The invention belongs to the technical field of biomass energy conversion, and relates to a method for preparing fuel oil from tallow tallow oil. Background technique [0002] The biggest advantage of biofuels over fossil fuels is their renewable nature. At present, vegetable oil is the main raw material for obtaining biofuels, and renewable fuels are obtained through thermochemical means such as transesterification and thermal cracking. Transesterification is currently a widely used method for preparing biodiesel. After years of development, it has formed a relatively mature technology. However, due to the high cloud point of biodiesel and poor low temperature fluidity, it is not conducive to use in cold environments, and its energy density is low. The calorific value is 9% lower than that of ordinary petrochemical diesel. In addition, biodiesel has poor thermal stability, is easy to oxidize, and is not easy to store. In addition, biodiesel has high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 王允圃刘玉环阮榕生杨倩戴磊磊黄伊宁张薛勤何伟炜吴可
Owner NANCHANG UNIV