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Biological diesel oil and method for preparing same

A biodiesel and petrochemical diesel technology, which is applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, biofuels, etc., can solve the problems of hidden safety hazards, complex equipment and high temperature, and achieves improved power performance, improved combustion performance, and low production costs. Effect

Inactive Publication Date: 2005-08-17
罗羽林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology not only has complex equipment and large investment, but also has great safety hazards in operation due to high temperature.
There is no domestic precedent for producing biodiesel by esterification reaction of Jatropha curcas seed oil

Method used

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  • Biological diesel oil and method for preparing same
  • Biological diesel oil and method for preparing same
  • Biological diesel oil and method for preparing same

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preparation example Construction

[0018] The preparation method of biodiesel comprises Jatropha seed oil production and Jatropha seed oil refining, modification process; It is characterized in that: described refining, modification process comprises the following steps:

[0019] a. Hydration degumming;

[0020] b. Alkali refining deacidification;

[0021] c. Dehydration;

[0022] d. Intermittent deodorization;

[0023] e. Emulsification or esterification

[0024] The specific emulsification process is that in the above step e, under the condition that the temperature is 5-50°C, the fatty alcohol is added in a ratio of 2-10% by volume to the refined oil of Jatropha curcas seeds; the preferred process is, Described fatty alcohol is methyl alcohol, ethanol or ethylene glycol; Another kind of preparation technology is, prepares biodiesel with jatropha seed refined oil esterification; : Add methanol or ethanol in a ratio of 3 to 1:6, use sodium hydroxide or sodium methoxide as a catalyst, control the temperatur...

Embodiment

[0026] 1. Jatropha seed oil production process

[0027] 1. Raw materials: Jatropha curcas L. seeds

[0028] After the Jatropha curcas bears fruit, the pericarp turns yellow and can be harvested. The harvested Jatropha curcas fruits are manually or mechanically peeled to obtain Jatropha curcas seeds, and the peeling rate is required to be >99%. The Jatropha curcas seeds are air-dried so that the moisture content is less than 6%, and the Jatropha curcas seed shells are black and bright, and then they can be put into storage.

[0029] 2. Pretreatment

[0030] 2.1 Remove impurities

[0031] Various impurities in Jatropha seeds are removed by cleaning, screening, air separation, magnetic separation, etc.

[0032] 2.2 Shelling

[0033] The peeling-separation combination machine is used to peel off the shell of Jatropha curcas seeds, and separate the shells and kernels to obtain the Jatropha curcas seeds kernels. The peeling rate is required to be >95%.

[0034] 2.3 Broken

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Abstract

The present invention relates to biological diesel oil and method for preparing same. The technical program is the biological diesel oil contains Jatropha crucas L. seed oil; in said Jatropha crucas L. seed oil, stearic acid content is not more than 0.4 (wt) percents. The method for preparing biological diesel oil comprises production art of the biological diesel oil and refining, improving art of the biological diesel oil; said refining, improving art comprises steps of: a, hydrating and degumming; b, alkali refining and acid removing; c, dehydrating; d intermittent deodorizing; e, emulsification and esterification. The invention has good effect of recucing stearic acid content in the Jatropha crucas L. seed oil, eliminating aromatic compound such as phthalic acid etc., improving burning ability of the biological diesel oil, reducing carbon accumulation in motor cylinder, improving power ability of motor, and discharging index. And the invention has simple producing process and low producing cost.

Description

technical field [0001] The present invention relates to biodiesel, in particular to biodiesel extracted from Jatropha curcas L. seeds. Background technique [0002] Biodiesel is more and more favored by people because of its unique environmental protection and regeneration. Some of the biodiesel produced from various oily vegetable or animal fats have entered the stage of commercial application. General biodiesel, its economy can not be compared with petrochemical diesel. [0003] Jatropha curcas L. is a deciduous shrub or small tree belonging to the Euphorbia L. family. It is a perennial woody oil plant. The oil content of Jatropha curcas seeds is very high, and the oil yield is as high as 40%. Jatropha curcas is easy to plant, does not occupy arable land, has a high survival rate and low planting cost. It is widely distributed in my country and is especially suitable for planting in dry and hot valleys in Sichuan, Guizhou, Yunnan, Guangxi and other provinces in southwe...

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 罗羽林
Owner 罗羽林
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