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Light diesel preparation method

A diesel and light-weight technology, which is applied in the petroleum industry, biofuels, liquid carbon-containing fuels, etc., can solve the problems of diesel engines such as insufficient power, unstable operation, and long ignition delay period, and achieve good combustion and low-temperature fluidity, The effect of low cost and short flame delay period

Inactive Publication Date: 2013-03-27
粟定纲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for the preparation of light diesel oil in view of the shortcomings of the existing biodiesel prepared from waste animal and vegetable oils that have a long flame retardation period, resulting in insufficient diesel engine power, unstable operation, and high fuel consumption. The light fraction of the oil is neutralized and compounded with biodiesel, and the resulting oil has good combustion and low temperature fluidity

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] 250kg of pine oil is heated for fractional distillation, and a total of 100kg of distillate below 260-280℃ is harvested as light oil, and the remaining liquid is heavy oil. Add 5.5 kg of 99% sodium hydroxide and 10 kg of water to the obtained light oil, fully stir for 25 minutes, and separate the clear oil from the residual liquid after 1.5 hours of precipitation, and re-precipitate the separated clear oil in the precipitation tank 52 hours. After the oil residue is separated, the obtained clear oil is heated and distilled, and the fraction at 150-220°C is collected, namely the vegetable product oil. The extracted vegetable oil and the national standard biodiesel prepared from waste animal and vegetable oils are compounded at 45:55 to obtain the light diesel of the present invention.

[0022] The light diesel of the present invention has been verified by the Hunan Provincial Commodity Quality Supervision and Inspection Institute and is based on the GB252-2000 "Light Diese...

Embodiment 2

[0027] 250kg of pine oil is heated for fractional distillation, and a total of 98kg of fractions below 260-280°C are harvested as light oil, and the remaining liquid is heavy oil. Add 5.2 kg of sodium hydroxide with a content of 99.2% and 9.8 kg of water to the obtained light oil, fully stir for 30 minutes, and separate the clear oil from the residual liquid after 1.25 hours of precipitation, and then place the separated clear oil in the precipitation tank. Settling for 55 hours. After the oil residue is separated, the obtained clear oil is heated and distilled, and the fraction at 150-220°C is collected, namely the vegetable product oil. The extracted vegetable oil and the national standard biodiesel prepared from waste animal and vegetable oils are compounded at 45:55 to obtain the light diesel of the present invention. The verification results are the same as in Example 1.

Embodiment 3

[0029] 250kg of pine oil is heated for fractional distillation, and a total of 104kg of distillate below 260-280℃ is harvested as light oil, and the remaining liquid is heavy oil. Add 6.03 kg of 99.5% sodium hydroxide and 10.4 kg of water to the obtained light oil, fully stir for 35 minutes, and separate the clear oil from the residual liquid after 1.5 hours of precipitation. The separated clear oil is re-introduced in the precipitation tank. Settling for 50 hours. After the oil residue is separated, the obtained clear oil is heated and distilled, and the fraction at 150-220°C is collected, namely the vegetable product oil. The extracted vegetable oil and the national standard biodiesel prepared from waste animal and vegetable oils are compounded at 45:55 to obtain the light diesel of the present invention. The verification results are the same as in Example 1.

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Abstract

The invention discloses a method for preparing light diesel by using vegetable oil and biodiesel as raw materials. The method comprises: firstly, separating a light fraction from pine-tree oil, adding sodium hydroxide to neutralize the light fraction and separating light oil from residual liquid by sedimentation; and secondly, settling the separated light oil again in a settling tank, separating the oil from slag, heating and distilling obtained light oil, collecting a fraction at 150 to 220 DEG C, and blending the obtained fraction with the biodiesel in a certain ratio to obtain finished diesel. The indexes of the light diesel of the invention meet the standards of No.0 diesel completely; the ignition delay of the light diesel is short; the viscosity of the light diesel at low temperature is low; and therefore the diesel has high combustion performance and high low-temperature flowability, and the technical bottle neck that the biodiesel cannot replace petroleum diesel completely is eliminated. The light diesel can be promoted and used as vehicle diesel.

Description

Technical field [0001] The invention belongs to the technical field of bioenergy, and specifically relates to a method for preparing light diesel by using biodiesel and vegetable oil. Background technique [0002] Animal and vegetable oils are mainly composed of fatty acid glycerides, which are degradable and environmentally compatible energy sources. However, their high molecular weight, low temperature fluidity and poor high temperature thermal stability limit their use in automobiles. Methyl esterification of animal and vegetable oils with methanol reduces their condensation point and improves high-temperature thermal stability. It becomes a fuel similar to petrochemical diesel, that is, biodiesel, which can be used as vehicle power fuel. Since the exhaust gas after combustion does not contain sulfur dioxide and produces less nitrogen oxides, it greatly reduces the pollution to the fuel environment and belongs to a new type of green and environmentally friendly fuel. [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/02C08K11/00
CPCY02E50/13Y02E50/10
Inventor 粟定纲
Owner 粟定纲
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