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Barbadosnut biological aviation fuel crude oil and preparation method thereof

A technology of aviation fuel and jatropha curcas, applied in the direction of fat production, fat oil/fat production, etc., can solve the problems of hydrogenation reaction not proceeding normally, poor palatability of feed, high acid value of oil and heavy metal content, so as to improve the value of comprehensive utilization , the nutritional value is improved, and the appearance is clear and transparent

Inactive Publication Date: 2013-08-14
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process not only consumes a lot of electricity and steam, but also causes serious damage to the oilseed cells and complex biochemical reactions during flaking, resulting in dark color of the pressed crude oil, acid value and non-hydratable phospholipids and The content of metal ions is high, and the oxidation of oil is serious. Even if it is refined and compensated by subsequent degumming, deacidification, decolorization, deodorization and other processes, it is still difficult to meet the standards of the United States Universal Oil Products (UOP) company for bio-aviation fuel refined oil.
At the same time, the high temperature will also seriously denature the protein in the oilseed cake, and its subsequent palatability as feed is poor, resulting in low resource utilization
[0005] Due to the process of oil making, the phosphorus colloid and metal ions in the oil will be transformed into CaxMgy(PO 4 ) 2 Types of mixed calcium phosphate and magnesium phosphate, because these solid substances are insoluble in the reaction medium, they will gradually deposit and block the pores of the catalyst in the subsequent refining to make them poisoned and deactivated. On the one hand, the hydrogenation reaction cannot proceed normally and cannot produce qualified bio-aviation oil, on the other hand also caused the waste of catalyst and raw oil
[0006] The existing method for producing oil from Jatropha curcas seed kernels also has the above-mentioned problems. As CN101838583 discloses "a method for shelling Jatropha curcas seeds to extract oil and make cakes", the method is to shell the seeds, separate the shell kernels, adjust Wetting, steaming, humidification, pressing, filtering and other processes to obtain Jatropha curcas crude oil, but because the pressing temperature is as high as 100°C, it will undoubtedly lead to acid value, non-hydratable phospholipids and heavy metals (ie calcium, magnesium) in the oil. , iron) high content, a series of quality problems such as serious oil oxidation, and the same as the existing technology, even through subsequent refining, it is impossible to meet the relevant standards for bio-aviation fuel refined oil, and there are still catalysts encountered in the subsequent preparation Poisoning problem, cannot be used to prepare bio-aviation fuel oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Firstly, the jatropha seeds with impurity content of 0.7% after impurity removal and classification are dried at 90°C until the water content is 8%, and then cooled to 35°C for shelling, crushing and sorting, and the shell content rate is controlled to 2% ; Add deionized water with a pH value of 7.6 to the water content of 15% in the Jatropha curcas seed kernel, and keep it at a constant temperature of 50 minutes at a pressure of 80kPa and a surface temperature of the seed kernel of 70°C, and then dry it at 85°C until the water content is 5.5 %; Put the dried Jatropha curcas seeds into a twin-screw cold press, press at an input temperature of 55°C, and control the oil output temperature to 55°C, and the outlet cake temperature to 75°C. The obtained crude oil has clear and transparent appearance, phospholipid content of 445ppm, calcium content of 9.59ppm, magnesium content of 4.69ppm, iron content of 0ppm, acid value of 3.1mgKOH / g, and moisture content of 500ppm.

Embodiment 2

[0032] First, the jatropha seeds with impurity content of 0.3% after impurity removal and classification are dried at 85°C to a water content of 4%, and then cooled to 28°C for shelling, crushing, and sorting, and the shell content is controlled to 10% ; Add deionized water with a pH value of 8 to the water content of 10% in the Jatropha curcas seed kernel, and keep it at a constant temperature of 58 minutes at a pressure of 20kPa and a surface temperature of the seed kernel of 80°C, and then dry it at 73°C until the water content is 4 %; Put the dried Jatropha curcas seed kernels into a twin-screw cold press, press twice at the temperature of 70°C for the inlet, 60°C for the oil, and 78°C for the outlet cake; The leaching operation is carried out according to the conventional leaching procedure, and then the jatropha bio-aviation fuel crude oil and cake are separated by filtration, and the crude oil obtained three times is combined. The obtained crude oil has clear and transpar...

Embodiment 3

[0034] First, the jatropha seeds with impurity content of 0.2% after impurity removal and classification are dried at 70°C to a water content of 6%, and then cooled to 40°C for shelling, crushing, and sorting, and the shell content is controlled to 6% ; Add deionized water with a pH value of 7.2 to the water content of 13% in the Jatropha curcas seed kernel, and keep it at a constant temperature for 45 minutes at a pressure of 70kPa and a surface temperature of the seed kernel of 65°C, and then dry it at 68°C until the water content is 7% %; Put the dried Jatropha curcas seed kernels into a twin-screw cold press, press at an inlet temperature of 60°C, and control the oil outlet temperature at 50°C, and the outlet cake temperature at 70°C; the resulting cake The leaching operation is carried out according to the conventional leaching procedure, and then the jatropha bio-aviation fuel crude oil and the cake are separated by filtration, and the crude oil obtained from the two time...

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Abstract

The invention discloses barbadosnut biological aviation fuel crude oil. The barbadosnut biological aviation fuel crude oil is characterized in that the appearance of the barbadosnut biological aviation fuel crude oil is clear and transparent, the phosphorus content in the barbadosnut biological aviation fuel crude oil is less than 500 ppm, the calcium content in the barbadosnut biological aviation fuel crude oil is less than 16 ppm, the magnesium content in the barbadosnut biological aviation fuel crude oil is less than 8 ppm, the iron content in the barbadosnut biological aviation fuel crudeoil in the barbadosnut biological aviation fuel crude oil is less than or equal to 3 ppm, the acid value is less than 6 mgKOH / g, and the moisture content in the barbadosnut biological aviation fuel crude oil is less than or equal to 1000 ppm. The invention also discloses a preparation method of the barbadosnut biological aviation fuel crude oil. In the barbadosnut biological aviation fuel crude oil provided by the invention, the acid value, the moisture content, the phosphorus content, the calcium content, the magnesium content and the iron content are lower, base oil product in good quality can be provided for obtaining high-quality biological aviation fuel oil in follow-up processing, activated substance can be better reserved due to less protein denaturation in low-temperature processing, the nutritive value of obtained cake dreg can be greatly increased, and the comprehensive utilization value is high. According to the preparation method disclosed by the invention, the microscsmicecology, the chemical composition, the physical state and the like of the barbadosnut can be changed, the squeezing oil extraction rate can be increased, the quality of grease and the cake dreg can be improved as well, the technology is simple and mature, and the operation and the control are easy.

Description

technical field [0001] The invention belongs to the technical field of bio-aviation fuel crude oil and its preparation, and specifically relates to jatropha bio-aviation fuel crude oil and a preparation method thereof. Background technique [0002] Jatropha curcas is a perennial drought-tolerant woody plant with strong vitality and is suitable for planting in barren and corner lands without occupying cultivated land. It has simple planting, extensive management, and rapid growth. It can bear fruit and put into production in 3 years, enters the full fruit period in 5 years, and the fruit picking period can last up to 50 years. The oil content of the seed kernel is 60-70%. Because Jatropha curcas oil is not edible, it has been recognized by the industry as an ideal source of raw materials for preparing biodiesel, and it is also one of the raw materials for preparing excellent bio-aviation fuel recognized at home and abroad. Now more than 40 countries are planning to plant Jat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/00C11B1/04C11B1/06C10L1/02
Inventor 陈放张志林大久保健唐琳徐莺
Owner SICHUAN UNIV
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