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A kind of preparation method of biodiesel

A biodiesel and oil-water mixture technology, which is applied in the preparation of liquid hydrocarbon mixtures, biofuels, and hydrocarbon oil treatment, can solve the problems of low calorific value, poor thermal stability, and strong corrosion of biomass diesel, reaching 16 High alkane number, good stability and low acid value

Active Publication Date: 2021-03-16
李祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biomass diesel produced by this technology has low calorific value, poor thermal stability, high acidity and strong corrosion, so its further application is greatly restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing biodiesel, comprising the following steps:

[0023] Step 1. Add 150 parts of rice husk, 15 parts of walnut shell powder, 3 parts of catalyst, and 50 parts of water into the autoclave in parts by weight, seal the autoclave, heat the autoclave to 380 ° C, adjust the pressure in the autoclave to 35 MPa, and react 150min, naturally cooled to room temperature, to obtain an oil-water mixture; the catalyst is 1-ethyl-3-methylimidazole lactic acid, 1-ethyl-3-methylimidazole tetrafluoroboric acid with a weight ratio of 2:1:1 Salt and nano magnesium carbonate whiskers;

[0024] Step 2: In parts by weight, take 150 parts of oil-water mixture and 20 parts of 0# diesel oil and stir for 30 minutes to mix, and then ultrasonic for 150 minutes. During the ultrasonic process, nano bubbles are introduced into the mixed solution, and then the oil and water are separated into layers by standing. Separation; the ultrasonic process is as follows: the mixture of oil-wat...

Embodiment 2

[0028] A method for preparing biodiesel, comprising the following steps:

[0029] Step 1. Add 120 parts of rice husk, 10 parts of walnut shell powder, 2 parts of catalyst, and 60 parts of water into the autoclave in parts by weight, seal the autoclave, heat the autoclave to 375 ° C, adjust the pressure in the autoclave to 25 MPa, and react 120min, naturally cooled to room temperature, to obtain an oil-water mixture; the catalyst is 1-ethyl-3-methylimidazole lactic acid, 1-ethyl-3-methylimidazole tetrafluoroboric acid with a weight ratio of 2:1:1 Salt and nano magnesium carbonate whiskers;

[0030] Step 2: In parts by weight, take 120 parts of oil-water mixture and 15 parts of 0# diesel oil and stir for 20 minutes to mix, and then ultrasonic for 120 minutes. During the ultrasonic process, nano bubbles are introduced into the mixed solution, and then the oil and water are separated into layers by standing. Separation; the ultrasonic process is as follows: the mixture of oil-wat...

Embodiment 3

[0034] A method for preparing biodiesel, comprising the following steps:

[0035] Step 1. Add 140 parts of straw, 12 parts of walnut shell powder, 2 parts of catalyst, and 50 parts of water into the autoclave in parts by weight, seal the autoclave, heat the autoclave to 400 °C, adjust the pressure inside the autoclave to 30 MPa, and react for 120 minutes , cooled naturally to room temperature to obtain an oil-water mixture; the catalyst is 1-ethyl-3-methylimidazole lactic acid, 1-ethyl-3-methylimidazole tetrafluoroborate with a weight ratio of 2:1:1 and nano magnesium carbonate whiskers;

[0036] Step 2. In parts by weight, take 150 parts of oil-water mixture and 20 parts of 0# diesel oil and stir for 30 minutes to mix, then ultrasonic for 120 minutes, and inject nano bubbles into the mixed liquid during the ultrasonic process, then let the oil and water separate into layers Separation; the ultrasonic process is as follows: the mixture of oil-water mixture and diesel oil is p...

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PUM

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Abstract

The invention discloses a preparation method of biomass diesel. The preparation method comprises the following steps: adding rice husks, walnut shell powder, a catalyst and water into an autoclave, sealing the autoclave, heating the autoclave, adjusting the pressure in the autoclave, carrying out a reaction, and naturally cooling the obtained reaction product to room temperature in order to obtainan oil and water mixture; taking the oil and water mixture, stirring the oil and water mixture and diesel to achieve mixing, carrying out ultrasonic treatment, introducing nano-bubbles to the obtained mixed solution in the ultrasonic process, and carrying out standing layering to separate oil and water; and taking the separated oil, adding the oil into a spherical stainless steel container, thenadding 1,2,3-trimethylcyclopentane, ethyl stearate, nitroethane and diphenyl urea, sealing the spherical stainless steel container, arranging the sealed container on a four-axis grinder, and turning on the four-axis grinder to drive the spherical stainless steel container to rotate randomly in order to obtain the biomass diesel. The biomass diesel oil prepared in the invention has the advantages of high calorific value, high cetane number, small acid value and good stability, and the emission of harmful gases (CO, HC, NO) after combustion is decreased.

Description

technical field [0001] The invention relates to a method for preparing diesel oil, in particular to a method for preparing biodiesel from biomass raw materials. Background technique [0002] With the rapid development of the global economy, the demand for oil has also risen sharply, but oil reserves are limited, and human beings are facing the plight of depletion of oil resources and rising oil prices; on the other hand, the impact of traditional energy on the environment pollution is becoming more and more serious. Under such dual pressures, it is extremely urgent to accelerate the industrialization process of efficient and clean biomass diesel. With the rapid consumption of fossil fuels and the deterioration of the environment, the rapid pyrolysis of biomass to produce renewable fuels has attracted more and more attention from researchers. Biomass liquid fuel is a way of utilizing biomass energy. Its production raw materials are forestry "three leftovers" (wood processin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/02C10G1/00
CPCC10G1/002C10G2300/1014C10L1/02C10L2270/026C10L2290/38Y02E50/10
Inventor 李祥颜凤生
Owner 李祥
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