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Method for synthesizing biodiesel utilizing swill water oil

A technology for synthesizing biology and biodiesel, which is applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, biofuels, etc., can solve the problems of unrecyclable catalysts, low acid catalytic efficiency, dark product color, etc., and achieve good industrialization prospects and process The effect of simplicity and small investment in equipment

Inactive Publication Date: 2007-03-07
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the efficiency of acid catalysis is low, waste water is generated, corrosion-resistant reaction equipment is required, the product is dark in color, there are many side reactions, and the catalyst cannot be recycled.

Method used

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  • Method for synthesizing biodiesel utilizing swill water oil
  • Method for synthesizing biodiesel utilizing swill water oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The hogwash oil recovered by the catering industry is used to separate and remove food residues such as protein. Add 4Kg hogwash oil, 1.4Kg methanol and 0.08Kg catalyst ferric sulfate into the reaction vessel, stir and heat to about 95°C. After reacting for 4 hours, the catalyst ferric sulfate was removed by centrifugation, and the ferric sulfate can be recovered and reused. Add 0.04Kg potassium hydroxide to the obtained oil product, stir and keep the temperature at about 65°C. After reacting for 1 hour, the product is left to stand or centrifuged to separate into two layers of oil and water. The oil layer is mainly fatty acid methyl ester and a small amount of soap , the water layer is excess methanol, soap, glycerin and potassium hydroxide; and then washed with 0.4L of 80 ° C hot water and centrifuged to remove the soap in the oil layer, the crude biodiesel product can be obtained. The crude product is distilled under vacuum to obtain a refined biodiesel product.

Embodiment 2

[0027] The hogwash oil recovered by the catering industry is used to separate and remove food residues such as protein. Add 4Kg of hogwash oil, 1.0Kg of methanol and 0.1Kg of catalyst ferric sulfate into the reaction vessel, stir and heat to about 80°C. After reacting for 6 hours, the catalyst iron sulfate was removed by centrifugation. Add 0.06Kg potassium hydroxide to the obtained oil product, stir and keep the temperature at about 80°C. After reacting for 0.5 hours, the product is left to stand or centrifuged to separate into two layers of oil and water. The oil layer is mainly fatty acid methyl ester and a small amount of soap , the water layer is excess methanol, soap, glycerin and potassium hydroxide; after washing with 0.4L of 85°C hot water and centrifuging to remove the soap in the oil layer, the crude biodiesel product can be obtained. The crude product is distilled under vacuum to obtain a refined biodiesel product.

Embodiment 3

[0029] The hogwash oil recovered by the catering industry is used to separate and remove food residues such as protein. Add 4Kg hogwash oil, 0.7Kg methanol and 0.13Kg catalyst ferric sulfate into the reaction vessel, stir and heat to about 70°C. After reacting for 3 hours, the catalyst iron sulfate was removed by centrifugation. Add 0.08Kg potassium hydroxide to the obtained oil product, stir and keep the temperature at about 95°C, after reacting for 2 hours, the product is left to stand or centrifuged to separate into two layers of oil and water, the oil layer is mainly fatty acid methyl ester and a small amount of soap , the water layer is excess methanol, soap, glycerin and potassium hydroxide; after washing with 0.4L of 90°C hot water and centrifuging to remove the soap in the oil layer, the crude biodiesel product can be obtained. The crude product is distilled under vacuum to obtain a refined biodiesel product.

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Abstract

This invention discloses a method for synthesizing bio-diesel oil by halogenated oil including the following steps: putting halogenated oil, methyl alcohol and catalyst iron sulfate into a reactor to be mixed and reacted for 2-6 hours to separate the iron sulfate from it after the reaction, then, adding KOH into the container to be mixed and heated for 0.5-2 hours, laying it still or centrifugating and laminating it, the upper layer of which contains methyl alcohol and bio-diesel oil, the lower contains glycerin and KOH, discharging the lower layer to get the upper solution to be vacuum distilled to recover the methyl alcohol to be washed by hot water to be centrifugated and separated to get niger and rough diesel oil to be vacuum-distilled to get refined bio-diesel oil.

Description

technical field [0001] The invention relates to utilization of new energy, in particular to a method for synthesizing biodiesel from hogwash oil. Background technique [0002] Swill, also known as swill, is leftovers and soup after meals; swill oil, also known as swill oil or catering waste oil, is oil floating on swill. General hogwash oil accounts for 10-20% of people's normal consumption of oil, through the collection of hogwash oil from restaurants and guesthouses with a certain scale. It is conservatively estimated that the annual total amount of hogwash oil in Guangzhou is more than 10,000 tons, and the annual total amount of hogwash oil in the whole province reaches 20,000-30,000 tons. [0003] Biodiesel is a new type of renewable energy, and it is an ideal substitute for petroleum resources. At present, developed countries such as Europe, America and Japan have raised the development of biodiesel to a strategic level. If hogwash oil can be collected and processed c...

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 欧仕益汪勇刘鹏展
Owner JINAN UNIVERSITY
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