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A kind of method that takes crude sulfate soap as raw material to prepare biodiesel

A sulfate soap and biodiesel technology, which is applied to the preparation of biological raw materials, biofuels, and liquid hydrocarbon mixtures, to achieve the effects of cost reduction, simple process, and low cost

Inactive Publication Date: 2015-09-23
青岛昊德建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] As mentioned above, reducing the production cost of biodiesel has become the top priority to expand the application of biodiesel, however, so far, there are few reports on how to reduce the production cost of biodiesel

Method used

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  • A kind of method that takes crude sulfate soap as raw material to prepare biodiesel
  • A kind of method that takes crude sulfate soap as raw material to prepare biodiesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Biodiesel was prepared from crude sulfate soap in a closed reaction system using concentrated sulfuric acid as a catalyst.

[0040] Dissolve 150 grams of crude sulfate soap (water content 33%, pH 9.5-10) in 400 ml of methanol, mix and place in a 1L round-bottomed flask, then add 30 mL of 96% concentrated sulfuric acid to the mixed solution, and place the round-bottomed The flask was capped tightly and the mixture was heated at 65°C for 1 hr.

[0041] After the biodiesel reaction solution after the above reaction is distilled under reduced pressure to recover the solvent, the remaining substance is fully mixed with water to obtain a suspension. The volume ratio to the suspension is 1:2, let stand to separate, remove the water layer, the pH of the water phase is 1.0, it can be seen that the conversion reaction of biodiesel needs to be carried out under sufficiently strong acidic conditions; the organic layer can be reused Wash three times with water; combine t...

Embodiment 2

[0045] Example 2: Preparation of biodiesel from crude sulfate soap in a closed reaction system using concentrated sulfuric acid as a catalyst.

[0046] Dissolve 150 grams of crude sulfate soap (moisture content 33%, pH9.5-10) in 300 ml of methanol, mix and place in a 1L round-bottomed flask, then add 20 mL of 96% concentrated sulfuric acid to the mixed solution, and place the round-bottomed The flask was capped tightly and the mixture was heated at 60°C for 0.5 hr.

[0047] After the biodiesel reaction solution after the above reaction is distilled under reduced pressure to recover the solvent, the remaining substance is fully mixed with water to obtain a suspension. The volume ratio to the suspension is 1:2, let stand to separate, remove the water layer, the pH of the water phase is 2.0, it can be seen that the conversion reaction of biodiesel needs to be carried out under sufficiently strong acidic conditions; the organic layer can be reused Wash three times with water; com...

Embodiment 3

[0049] Example 3: Biodiesel was prepared from crude sulfate soap in a closed reaction system using concentrated sulfuric acid as a catalyst.

[0050] Dissolve 150 grams of crude sulfate soap (moisture content 33%, pH9.5-10) in 200 ml of ethanol, mix and place in a 1L round bottom flask, then add 10 mL of 98% concentrated sulfuric acid to the mixed solution, and place the round bottom The flask was capped tightly, and the mixed system was heated at 120°C for 15 minutes.

[0051] After the biodiesel reaction solution after the above reaction is recovered by distillation under reduced pressure, the remaining substance is fully mixed with water to obtain a suspension. The volume ratio to the suspension is 1:1, let stand to separate layers, remove the water layer, the pH of the water phase is 1.5, and wash the organic layer three times with water; combine the organic layers, and evaporate the ethyl acetate in it under reduced pressure ; Then distill under reduced pressure (2mmHg) ...

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Abstract

The invention provides a method for preparing biodiesel based on crude sulphate soap as a material. The method concretely comprises the steps of reacting the crude sulphate soap with C1-C6 alkanol as materials to prepare the biodiesel in the presence of a catalyst, wherein the catalyst is an acid catalyst or acetylchloride. The biodiesel preparation method provided by the invention is simple in process, and low in energy consumption; the biodiesel product with a high additional value is prepared based on the crude sulphate soap with low cost as the material; and the cost of the biodiesel is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of bioenergy, and in particular relates to a preparation method of biodiesel. Background technique [0002] Biodiesel is a kind of fatty acid ethers containing low-chain alkyl, especially methyl and ethyl ether fatty acids. Because of its cleanness, regeneration and biodegradability, it has caused many problems in replacing traditional petroleum diesel. focus on. [0003] Existing studies have clarified the characteristics of biodiesel, and some research reports have used biodiesel for engine driving experiments, and the results show that biodiesel is a good substitute for petroleum diesel. Indeed, biodiesel has been used in some diesel applications and has been found to have properties similar to or superior to conventional petroleum. Biodiesel can be used alone or partly blended with conventional diesel to replace petroleum diesel. Compared with traditional petroleum diesel, using biodiesel as raw mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 任浩翟华敏大森茂俊陈金慧杨立伟
Owner 青岛昊德建材有限公司
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