Biodiesel based fuel oil and preparation thereof

A technology of biodiesel and fuel oil, applied in fuel, liquid carbon-containing fuel, petroleum industry, etc., can solve the problems of poor stability and low calorific value, and achieve the effects of good stability, high calorific value and saving consumption

Inactive Publication Date: 2009-08-05
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages of low calorific value, need for refined biodiesel, and poor stability in the prior art, and provides a biodiesel-ba...

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0018] Preparation of Crude Biodiesel:

[0019] Mix rapeseed oil, palm oil, cottonseed oil and other natural oils with methanol in a molar ratio of 6:1, add 2%wt KOH, stir evenly at 80°C, and let it stand for 1 hour to separate and the upper layer is The crude biodiesel raw material we use is mainly composed of biodiesel, unreacted excess alcohol and catalyst residues, free glycerin, a small amount of metal ions, and residual soaps. .

[0020] A biodiesel-based fuel oil consisting of the following substances, in weight percent:

[0021] Crude Biodiesel 50-80%

[0022] Complex emulsifier 4-35%

[0023] Methanol or water or a mixture of both Balance.

[0024] For the biodiesel-based fuel oil, the compound emulsifier is a mixture of the following two types of substances, the first type is: oleic acid, palmitoleic acid, naphthenic acid, fatty amine polyamides with 40-100 C atoms Oxyethylene ether, sorbitan fatty acid ester with 40-100 C atoms, polyoxyethylene sorbitan fatty a...

Embodiment 1

[0028] At room temperature, a mixture of 52% of crude biodiesel, 26% of compound emulsifier, 12% of methanol and 10% of water was prepared by weight percentage, put into a container, and stirred evenly for 60 minutes, and the whole mixture was transparent liquid. The composite emulsifier is composed of 50%wt oleic acid, 42%wt sorbitan fatty acid ester SPAN80, 5%wt triethanolamine and 3%wt 1-octanol. The obtained calorific value is 37.9KJ / g, and the product does not appear turbid after being placed for 6 months.

Embodiment 2

[0030] At room temperature, prepared by weight percentage, put the mixture of 58% of crude biodiesel, 22% of compound emulsifier, and 20% of methanol into a container, and stir evenly for 60 minutes, and the whole mixed liquid is a transparent liquid. The composite emulsifier is compounded by 45%wt of palmitoleic acid, 50%wt of diethanolamine and 5%wt of tert-butanol. The obtained calorific value is 37.8KJ / g, and the product does not appear turbid after being placed for 6 months.

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Abstract

The invention provides biodiesel based fuel oil which comprises the following components by weight: 50-80 percent of crude biodiesel, 4-35 percent of compound emulsifying agent, and one or two mixture of water and methanol, wherein the compound emulsifying agent is the mixture of the two types of materials, the first-type material is one or the mixture of a plurality of oleic acid, palmitoleic acid, naphthenic acid, aliphatic amine polyethenoxy ether with C atomicity being 40-100, dehydration sorbitan fatty acid ester with C atomicity being 40-100, polyoxyethylenec dehydration sorbitan fatty acid ester with C atomicity being 40-100; the second-type material is one or the mixture of a plurality of monoethanol amine, diethanolameine, trolamine, diglycol amine, 1-octanol and tertiary butyl alcohol. The preparation method is as follows: the mixtures are mixed according to the percent by weight and are mixed uniformly so as to obtain transparent solution. The fuel oil has good stability, non layering for a long time, no discolor and no turbidity, and is directly prepared by adopting the crude biodiesel. Methanol or water or the mixture of the water and the methanol is added, thus the consumption of the biodiesel is saved.

Description

technical field [0001] The invention belongs to the technical field of biodiesel, and in particular relates to a biodiesel-based fuel oil and a preparation method thereof. Background technique [0002] Biodiesel compounding technology has been around for decades, but it has not been widely promoted and applied so far. The reason is that the compound biodiesel produced by the prior art has many shortcomings: 1. Poor stability and short shelf life. At present, most of the compound biodiesel developed by countries in the world are white or yellow-white emulsions with a particle size of 0.01-0.1mm, poor stability and short shelf life, so they cannot be used as commercial oil turnover, which brings inconvenience to popularization and use. 2. The equipment is complicated, the investment is large, and the energy consumption is high. 3. The cost of emulsification is high. Though better fuel-saving effect is arranged, fuel-saving does not save money, and economic benefit is little,...

Claims

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Application Information

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IPC IPC(8): C10L1/14
Inventor 蒋剑春聂小安李翔宇李科许玉李书龙常侠戴伟娣周永红
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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