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Method for preparing biodiesel by using xanthoceras sorbifolia oil

A technology of sorbifolia oil and biodiesel, which is applied in the fields of biofuel, fat oil/fat refining, chemical instruments and methods, etc., can solve problems such as side reactions, waste water pollution, and slow catalytic reaction speed, and achieve less side reactions , good oil quality and high selectivity

Inactive Publication Date: 2011-08-17
青岛福瑞斯生物能源科技开发有限公司
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Problems solved by technology

[0005] The invention provides a method for producing biodiesel with sorbifolia oil as a raw material, which uses solid superacid as a catalyst, can solve the problem of wastewater pollution caused by preparing biodiesel with a liquid homogeneous catalyst at present, and can solve the following problems: The preparation of biodiesel by solid base catalyst has the problems of slow catalytic reaction and easy to cause side reactions.

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  • Method for preparing biodiesel by using xanthoceras sorbifolia oil
  • Method for preparing biodiesel by using xanthoceras sorbifolia oil

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Embodiment 1

[0027] The solid superacid refers to an acid whose acid strength is stronger than 100% sulfuric acid, that is, an acid whose Hammett acidity function H0<-11.94. Because the solid superacid can activate the acid-catalyzed reaction under relatively mild conditions, it also has the advantages of high selectivity, less side reactions, easy separation from reactants, no corrosion to equipment, and reusable advantages.

[0028] Preparation of solid superacid catalyst: In this embodiment, the solid superacid catalyst is activated carbon loaded with zirconium sulfate, and 30 g of activated carbon with a diameter of 0.9 mm is weighed. Wash with water until neutral, and dry at 110°C to constant weight for later use. Dissolve 4g of zirconium sulfate in 20ml of distilled water before loading, then add the treated activated carbon into the water, continue to add a certain amount of water until the liquid surface is covered with solids, then add 15ml of distilled water, heat for a period of...

Embodiment 2

[0050] Preparation of solid superacid catalyst: Take 15g of activated carbon with a diameter of 1.2mm, boil it in 50ml of 0.5mol / L hydrochloric acid solution for 2 hours, wash it with water until it becomes neutral, and bake it at 110°C until it reaches a constant weight for later use. Dissolve 2g of zirconium sulfate in 10ml of distilled water, then mix it with the treated activated carbon, continue to add distilled water until the liquid surface is covered with solids, then add 10ml of distilled water, heat with high heat until the liquid boils, let it stand for 2 hours, and then heat with low heat , until the mixture in the beaker was basically evaporated to dryness, and then the mixture was transferred to a muffle furnace at a temperature of 300-350° C. to a constant weight, and the mass of the obtained catalyst was 16.9 g.

[0051] (1) Pretreatment

[0052] Firstly, the Xanthania sorbifolia oil is prepared by static pressure mechanical pressing at a temperature of 20-25°C...

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Abstract

The invention provides a method for producing biodiesel by using xanthoceras sorbifolia oil, which comprises the following steps: (1) pretreatment; (2) catalysis treatment by solid super acid; and (3) decolonization of coarse diesel. The step of catalysis treatment by solid super acid comprises: fully mixing standard raw material oil, methanol and a solid super acid catalyst in a reactor according to a ratio of 100:(25-35):(3-5) to form a mixture; and performing a reaction by using the mixture in the reactor and stopping the reaction when the methyl ester content is detected to reach over 96 percent. The reaction mixture settles and demixes into a glycerol phase and coarse diesel, and the glycerol phase and coarse diesel are separated by a centrifuge. In the invention, the problem of violent competition for raw materials for producing biodiesel, soil improvement is promoted, the byproduct has economic value, and the environment-protection benefit is considerable. With active carbon serving as a carrier for a zirconium sulfate catalyst, the method has the advantages of making separation of catalyst from a liquid phase easy, preventing equipment corrosion, allowing equipment to be used repeatedly, along with high selectivity, fewer side reactions and the like. The content of pollutants produced by the method is reduced greatly.

Description

technical field [0001] The invention relates to a method for preparing biodiesel, in particular to a method for preparing biodiesel from sorbifolia oil. Background technique [0002] Biodiesel, or fatty acid methyl ester, is a clean and renewable energy source. It is a liquid fuel made from a variety of natural oils and methanol (or other alcohols) through chemical reactions. It is an environmentally friendly energy source. The raw materials for biodiesel production can be various animal and vegetable oils, but due to the high price of many animal and vegetable oils, about 75% of the cost of biodiesel is raw material costs, so the choice of raw materials for biodiesel is subject to certain restrictions. New biodiesel raw materials have become one of the important targets of biodiesel research. [0003] The vegetable oil content of X. sorbifolium is rich, and it is highly adaptable to the soil. It is resistant to salt and alkali and has a wide range of planting. For a hundr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/10C11B3/00C11B3/10C10L1/02B01J27/053
CPCY02E50/13Y02E50/10
Inventor 王金燕
Owner 青岛福瑞斯生物能源科技开发有限公司
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