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Method for preparing biodiesel by catalytic cracking

A biodiesel, catalytic cracking technology, applied in catalytic cracking, cracking, biological raw materials, etc., can solve problems such as photochemical pollution, air pollution, energy shortage, etc., achieve high biodegradability, reduce air toxicity, and improve low-temperature engine start performance Effect

Inactive Publication Date: 2009-07-08
王英国 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the 1970s, especially after 1991, on the one hand, oil prices have continued to rise and oil resources have been depleted, and the whole world is facing a crisis of energy shortage; on the other hand, with the improvement of human living standards and environmental protection With the enhancement of awareness, we gradually realize the seriousness of air pollution caused by petroleum as fuel, especially "photochemical pollution" which causes great harm to the human body, forcing human beings to find a new energy and "clean energy" to replace petroleum raw materials

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] The method for preparing biodiesel by catalytic cracking of the present invention is prepared by reacting vegetable oil under the action of a catalyst, and its specific operation steps are as follows:

[0021] a. Heat the vegetable oil to 130-170°C and perform flash evaporation to remove water vapor and light components;

[0022] b. Heating the vegetable oil obtained by flash evaporation in step a to 360-450° C. to react with the catalyst, the space velocity of the catalyst is 0.5-1 ton / hour·ton of catalyst;

[0023] c, the reaction product obtained through step b is subjected to a secondary catalytic reaction with the same catalyst, the reaction temperature is 360~480°C, and the space velocity of the catalyst is 0.5~1 ton / hour·ton of catalyst;

[0024] d. Distillation and separation of the catalytic product obtained in step c, the feed temperature is 350-380°C, that is, bio-gasoline, bio-diesel and residual oil are obtained respectively;

[0025] Described catalyst is...

Embodiment 2

[0028] The method for preparing biodiesel by catalytic cracking of the present invention is prepared by reacting vegetable oil under the action of a catalyst, and its specific operation steps are as follows:

[0029] a. Heat the vegetable oil to 130°C and perform flash evaporation to remove water vapor and light components;

[0030] b. The vegetable oil obtained by flash evaporation in step a is heated to 360° C. to react with the catalyst, and the space velocity of the catalyst is 0.5 tons / hour·ton of catalyst;

[0031] c, the reaction product obtained through step b is subjected to a secondary catalytic reaction with the same catalyst, the reaction temperature is 360 ° C, and the space velocity of the catalyst is 0.5 tons / hour·ton of catalyst;

[0032] d. Distillation and separation of the catalytic product obtained in step c, the feed temperature is 350 ° C, that is, biogasoline, biodiesel and residual oil are obtained respectively;

[0033] Described catalyst is ZSM-5;

...

Embodiment 3

[0036] The method for preparing biodiesel by catalytic cracking of the present invention is prepared by reacting vegetable oil under the action of a catalyst, and its specific operation steps are as follows:

[0037] a. Heat the vegetable oil to 150°C and perform flash evaporation to remove water vapor and light components;

[0038] b. The vegetable oil obtained by flash evaporation in step a is heated to 390-420° C. to react with the catalyst, and the space velocity of the catalyst is 0.8 tons / hour·ton of catalyst;

[0039] C, the reaction product that obtains through b step is carried out secondary catalytic reaction with identical catalyzer, and reaction temperature is 390~420 ℃, and the space velocity of catalyzer is 0.8 ton / hour·ton catalyzer;

[0040] d. Distillation and separation of the catalytic product obtained in step c, the feed temperature is 37 ° C, that is, biogasoline, biodiesel and residual oil are obtained respectively;

[0041] Described catalyst is ZSM-5; ...

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Abstract

The invention relates to a method for preparing biodiesel through catalytic cracking from vegetable oil under the action of a catalyst, which comprises the following operation steps: heating the vegetable oil and then performing flash vaporization on the vegetable oil when the temperature is between 130 and 170 DEG C to remove water vapor and light components; heating the vegetable oil after the flash vaporization to react with the catalyst at a temperature of between 360 and 450 DEG C, wherein the space velocity of the catalyst is between 0.5 and 1 ton / hour.ton catalyst; performing secondary catalytic reaction on the reaction products obtained in the step with the same catalyst with the space velocity of between 0.5 and 1 ton / hour.ton catalyst; and performing distillation separation on the prepared catalytic product with the feed temperature of between 350 and 380 DEG C to prepare biological gasoline, the biodiesel and residual oil respectively. The biodiesel prepared by the method has the advantages of excellent environmental protection property, better low temperature engine starting performance, and better lubrification.

Description

technical field [0001] The invention belongs to a method for preparing biodiesel, in particular to a method for preparing biodiesel by catalytic cracking. Background technique [0002] Biodiesel is fatty acid methyl ester, which can be used as a substitute for petroleum. It is an environmentally friendly, renewable energy and industrial raw material mainly made of animal and vegetable oil or oil feet. As early as the end of the 19th century, Rudolf Diesel successfully used peanut oil as an engine fuel, and made its debut at the Paris World Expo in 1990. Although due to price reasons, its application has been very limited. However, since the 1970s, especially after 1991, on the one hand, the price of oil has continued to rise and oil resources have been depleted, and the whole world is facing a crisis of energy shortage; on the other hand, with the improvement of human living standards and environmental protection With the enhancement of awareness, we gradually realize the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 王英国徐荣江
Owner 王英国
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