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Process for preparing biological diesel oil using palm oil

A biodiesel and palm oil technology, applied in the field of oleochemistry, can solve the problems of reducing the yield of biodiesel, reducing catalyst activity, and difficult separation of glycerin, achieving simple and easy separation, improving conversion rate and rate, and good economy Effect

Inactive Publication Date: 2006-11-08
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the imported crude palm oil contains a certain amount of free fatty acid (4-8%) and moisture (>0.2%), if the above-mentioned process is used to prepare biodiesel from palm oil, the free fatty acid and moisture in the raw material will greatly reduce the activity of the catalyst , and cause saponification reaction, reduce the yield of biodiesel, and also generate gel, which makes glycerin separation difficult, and the subsequent neutralization and washing process will bring a large amount of industrial wastewater, causing environmental pollution

Method used

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  • Process for preparing biological diesel oil using palm oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] After filtering, 100 parts of crude palm oil containing 4.60% of free fatty acid content by weight, 0.50% of moisture, and 0.08% of solid impurities are heated to 90°C, and enter the proportioning machine together with 11 parts of 90°C hot water to mix, and the oil and water pass through After 23S reaction, enter the butterfly centrifuge to separate the oil feet and grease; the grease is heated to 265°C, and sent to the plate distillation tower for steam distillation. All layers in the tower are directly steamed to distill fatty acids, and the amount of direct steam is 2.5 parts. Maintain an absolute pressure of 3mmHg in the tower, a temperature of 260°C, and flow through the entire tower for 80 minutes. The oil after removing fatty acids is cooled to 88°C and enters a vacuum dryer. The absolute pressure in the dryer is maintained at 55mmHg, and the temperature is 100°C. After drying and dehydration The oil is cooled to 70°C through a heat exchanger, and the free fatty a...

Embodiment 2

[0027] After filtering, 100 parts of crude palm oil containing 7.50% of free fatty acid content by weight, 0.24% of moisture, and 0.12% of solid impurities are heated to 85°C, and enter the proportioning machine together with 10 parts of 90°C hot water to mix, and the oil and water pass through After 25S reaction, enter the butterfly centrifuge to separate the oil feet and grease; the grease is heated to 270°C, and sent to the plate distillation tower for steam distillation. All layers in the tower are directly steamed to distill fatty acids, and the amount of direct steam is 3.5 parts. Maintain an absolute pressure of 2mmHg in the tower, a temperature of 270°C, and flow through the entire tower for 80 minutes. The oil after removing fatty acids is cooled to 90°C and enters a vacuum dryer. The absolute pressure in the dryer is maintained at 50mmHg, and the temperature is 95°C. After drying and dehydration The oil is cooled to 65°C through a heat exchanger, and the free fatty ac...

Embodiment 3

[0029]After filtering, 100 parts of crude palm oil containing 2.10% of free fatty acid content, 0.37% of moisture, and 0.05% of solid impurities are heated to 88°C by weight, and then enter the proportioning machine together with 9.5 parts of 90°C hot water to mix, and the oil and water are mixed through After the 23S reaction, enter the butterfly centrifuge to separate the oil feet and grease; the grease is heated to 260°C, and sent to the plate distillation tower for steam distillation. All layers in the tower are directly steamed to distill fatty acids, and the amount of direct steam is 2 parts. The tower maintains an absolute pressure of 2mmHg, a temperature of 265°C, and a time of 80 minutes to flow through the entire tower. The oil after removing fatty acids is cooled to 85°C and enters a vacuum dryer. The absolute pressure of the dryer is maintained at 60mmHg, and the temperature is 90°C. The oil is cooled to 68°C through a heat exchanger, and the free fatty acid content...

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Abstract

The process of preparing biological diesel oil with palm oil includes the steps of: hydrating and degumming coarse palm oil, distilling to eliminating acid, dewatering, adding low carbon alcohol and catalyst for ester exchange reaction to obtain coarse biological diesel oil and coarse glycerin, evaporating to separate out low carbon alcohol and to obtain biological diesel oil and glycerin as side product, and recovering the evaporated low carbon alcohol for reuse. The present invention has abundant material source, low cost, high biological diesel oil converting rate and yield, simple technological process and less environmental pollution.

Description

technical field [0001] The invention relates to a method for preparing biodiesel from palm oil, which belongs to the field of oil chemistry. Background technique [0002] Biodiesel has attracted more and more attention because of its unique environmental protection and regeneration properties. The production of biodiesel from rapeseed oil in Europe and soybean oil in the United States has been put into industrial production. Due to price reasons, it is not economically feasible to produce biodiesel from rapeseed oil, soybean oil, peanut oil and other edible oils in my country. Therefore, at present domestic research on biodiesel mainly focuses on using waste animal and vegetable oils as raw materials, such as CN1238468C, CN1743417A, CN1382762A, CN1760335A, CN1412278A, etc. have all reported the use of waste animal and vegetable oils or high acid value animal and vegetable oils to produce biodiesel Methods, Hainan Zhenghe, Sichuan Gushan, Fujian Zhuoyue, etc. have also buil...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02E50/10Y02P30/20
Inventor 黄凤洪黄庆德李文林杨湄钮琰星郭萍梅夏伏建万楚筠刘昌盛
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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