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Method for preparing biodiesel by utilizing oil plant

A technology of biodiesel and plants, which is applied in the direction of biofuel, fat oil/fat production, petroleum industry, etc., can solve the problems that the yield cannot be further improved, and the reaction catalyst is difficult to recycle, so as to avoid low reaction yield and promote continuous positive To progress and improve productivity

Active Publication Date: 2015-03-04
黄耀江
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The problem to be solved by the present invention lies in the problem that the reaction raw materials in the process of synthesizing biodiesel with a two-liquid phase mixed solvent in one step in the prior art will inhibit the synthesis of biodiesel, and the yield cannot be further improved, and then provide a method for synthesizing biodiesel with high efficiency;
[0007] The second technical problem to be solved by the present invention lies in the problem that the reaction catalyst for preparing biodiesel in the prior art is difficult to recycle, and then provides a method for synthesizing biodiesel that can recycle the catalyst and facilitate the recovery of by-products

Method used

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  • Method for preparing biodiesel by utilizing oil plant

Examples

Experimental program
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Embodiment 1-1

[0038] The biodiesel described in the present embodiment utilizes Xanthos sorbifolium seed kernel as raw material and is prepared by the following method:

[0039] (1) Grind the radix sorbifolium seed kernels, pass through a 40-mesh sieve, and dry at 120°C, wrap 10g of the powder with degreasing filter paper and place it in the extraction cylinder 1 for later use;

[0040] (2) Add the activated carbon-supported KOH solid base catalyst into the reaction bottle 9 through the conveyor belt 10. The amount of the catalyst is 0.65 g. The two-liquid phase mixed solvent includes 20 g of n-hexane and 1 g of methanol, and is placed in the solvent bottle 7. And through the first peristaltic pump 5, the two-liquid-phase mixed solvent of n-hexane and methanol is pumped into the extraction cylinder 1 for extraction, and the temperature is controlled at 60°C to carry out the transesterification reaction;

[0041] (3) When the reaction solution after extraction turns yellow, add a two-liquid-...

Embodiment 1-2

[0047] The type and amount of oil-containing plants in the extraction process described in this embodiment are the same as in Example 1-1, and the type and content of the catalyst used are also the same as in Example 1-1. The only difference is that when the extraction begins, the The two-liquid-phase mixed solvent composed of 23g of n-hexane and 67g of methanol was directly added into the solvent bottle for reflux extraction operation, and the reaction temperature was controlled at 60°C throughout the process. In this embodiment, a total of 4.02 g of crude biodiesel was obtained, and the extraction rate of the crude biodiesel was 71.42%.

Embodiment 1-3

[0049] The type and amount of oil-containing plants in the extraction method described in this example, as well as the type and amount of the selected catalyst, the type and amount of the two-liquid phase mixed solvent and the addition method are the same as in Example 1-1, the only difference is that During the reaction process, the reaction temperatures of steps (2), (3) and (4) were respectively controlled at 40, 50 and 60° C. for reflux extraction. In this embodiment, a total of 5.47 g of crude biodiesel was obtained, and the extraction rate of the crude biodiesel was 97.31%.

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Abstract

The invention belongs to the chemical field of bio oil, and in particular relates to a method for preparing biodiesel by utilizing oil plants. The invention discloses a method for preparing biological diesel by utilizing oil plants. The method utilizes the seeds oil plants as raw materials; an oil extraction solvent and a transesterification solvent form a double liquid phase mixed solvent; and in the presence of a solid base catalyst, the double liquid phase mixed solvent in different volumes is refilled for grease extraction and a transesterification reaction. The invention mainly solves the problem that one step synthesis of biodiesel by double liquid phase mixed solvent in the prior art has disadvantages of inhibition on the synthesis of biodiesel by reaction raw materials and inability to increasing yield, and provides a high-efficiency and high-yield method for synthesis of biodiesel.

Description

technical field [0001] The invention belongs to the field of bio-oil chemical industry, and in particular relates to a method for preparing bio-diesel from oil-containing plants. Background technique [0002] Biodiesel refers to a renewable diesel fuel that can replace petrochemical diesel oil, which is made from oil crops, wild oil plants, engineering microalgae and other aquatic vegetable oils, animal oils, and catering waste oils through transesterification processes. Biodiesel is a typical "green energy" with a degradation rate twice that of ordinary diesel and less pollution to soil and water. It is a good substitute for petrochemical diesel and has the characteristics of environmental protection, safety, and renewability. In recent years, affected by the price of crude oil and the pressure of environmental protection, the biodiesel industry has received extensive attention. [0003] The most important raw material for biodiesel production is vegetable oil. Currently, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10C11B1/04C11C3/10C10L1/02
CPCY02E50/13Y02E50/10
Inventor 黄耀江李娜闫强蒋丹靳卫林杨志达
Owner 黄耀江
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