A kind of environment-friendly fuel oil for special vehicles

A technology for special automobiles and fuel oil, which is applied in the preparation of environmentally friendly fuels and green fields. It can solve the problems of insufficient synthesis and refining technology of crude esters, large investment in hydrogenation equipment, high freezing point, and high cold filter point. Complementary, high viscosity, and the effect of increasing the flash point

Active Publication Date: 2015-10-28
刘五连 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of commercialization of biodiesel, compared with mature fossil diesel, there are still problems such as poor oxidation stability, high freezing point and cold filter point, and crude ester synthesis and refining technology are not in place, and there are no channels to enter the fuel market. , so that most domestic biodiesel is only used as oleochemical raw materials, such as the production of epoxy plasticizers, leather fatliquor, natural detergents, fatty acid alcohols, etc., and has not entered the fuel market in large quantities
[0003] In the oil refining industry, crude oil is often processed by vacuum distillation, and the oil yield is only 65-70%. The remaining "residual oil" is catalytically cracked to obtain coked diesel oil, which belongs to "secondary oil" and has a low cetane number (diesel oil 44 ~45, coking diesel oil 38~39), strong odor, poor oxidation stability, oxidative discoloration, etc., cannot directly replace diesel oil
At present, most of them use hydrogenation refining technology, but the investment in hydrogenation equipment is large and the processing cost is high, which is difficult for private enterprises to accept

Method used

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  • A kind of environment-friendly fuel oil for special vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Refining of Crude Biodiesel

[0031] Put 100kg of crude methyl ester into the reaction tank with mechanical stirring, heating and vacuum dehydration device, raise the temperature to 65°C under stirring, add 0.5kg of sulfuric acid-acetic acid mixture until the pH is 5, after stirring evenly, slowly add 1kg35wt % hydrogen peroxide, keep oxidative decolorization at 65°C for 1 hour, stop stirring, let it stand still, release oxidation residue and water from the bottom valve of the reaction tank;

[0032] After determining the acid value AV=5mgKOH / g, add caustic soda and diethanolamine mixed solution according to the calculated amount, stir for 15 minutes, let it stand for stratification, release "soap stock" from the bottom valve of the reaction tank, and measure the acid value after treatment AV= 0.5mgKOH / g, then add 5% concentrated saline to wash, and then wash with deionized water. After separating the lower layer of washing water, turn on the vacuum system and raise...

Embodiment 2

[0043] 1. Refining of Crude Biodiesel

[0044] Put 100kg of crude methyl ester into the reaction tank with mechanical stirring, heating, and vacuum dehydration device, heat up to 70°C under stirring, add 0.5kg of sulfuric acid-acetic acid mixture until the pH is 6, after stirring evenly, slowly add 3kg35wt % hydrogen peroxide, keep oxidative decolorization at 70°C for 1 hour, stop stirring, let stand, and release oxidation residue and water from the bottom valve of the reaction tank;

[0045] After measuring the acid value AV=3mgKOH / g, add caustic soda and diethanolamine mixed solution according to the calculated amount, stir for 15 minutes, let it stand for stratification, release "soap stock" from the bottom valve of the reaction tank, and measure the acid value after treatment AV= 0.5mgKOH / g, then add 5wt% concentrated saline to wash, and then wash with deionized water. After separating the lower layer of washing water, turn on the vacuum system and raise the temperature t...

Embodiment 3

[0056] 1. Refining of Crude Biodiesel

[0057] Put 100kg of crude methyl ester into the reaction tank with mechanical stirring, heating, and vacuum dehydration device, heat up to 68°C under stirring, add 0.5kg of sulfuric acid-acetic acid mixture until the pH is 5, after stirring evenly, slowly add 2kg35wt % hydrogen peroxide, kept at 68°C for oxidative decolorization for 1 hour, stopped stirring, let stand, and released oxidation residue and water from the bottom valve of the reaction tank;

[0058] After determining the acid value AV=6mgKOH / g, add caustic soda and diethanolammonium mixture according to the calculated amount, stir for 15 minutes, let stand for stratification, release "soap foot" from the bottom valve of the reaction tank, and measure the acid value AV after treatment =0.5mgKOH / g, then add 5wt% salt water to wash, and then wash with deionized water. After separating the lower layer of washing water, turn on the vacuum system and raise the temperature to 90°C ...

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Abstract

The invention belongs to the field of environment-friendly fuel preparation and in particular relates to environment-friendly fuel oil for a special car. The fuel oil is prepared by mixing the following raw materials in percentage by weight: 36.0%-56.8% of refined biodiesel, 42.6%-63.2% of refined coking diesel, 0.5%-0.7% of a mutual solvent and 0.08%-0.10% of an antioxidant, wherein the refined biodiesel is biodiesel prepared by oxidation decolorization, deacidification and soap removal refinement of crude methyl ester which is synthesized from illegal cooking oil, waste cooking oil and methanol and is used as a raw material, a conventional reduced pressure distillation refinement technology is replaced, and low-cost biodiesel is obtained; the refined coking diesel is obtained by replacing light diesel with coking diesel, degumming through ionic liquid and washing by compound alkali to remove odor and nitrogen oxide, a hydrogenation purification technology is replaced with a non-hydrogenation purification process, and low-cost refined coking diesel is obtained; the product cost is greatly reduced and remarkable economic benefits are obtained; meanwhile, the mixed fuel oil is greatly improved in safety, the advantages and disadvantages of the biodiesel and the coking diesel complement each other, and the fuel oil quality is improved.

Description

technical field [0001] The invention belongs to the field of preparation of green and environment-friendly fuels, and in particular relates to an environment-friendly fuel oil for special vehicles. Background technique [0002] Biodiesel has the advantages of good combustion performance, renewability, and environmental friendliness, making it the most promising fossil substitute. However, in the process of commercialization of biodiesel, compared with mature fossil diesel, there are still problems such as poor oxidation stability, high freezing point and cold filter point, and crude ester synthesis and refining technology are not in place, and there are no channels to enter the fuel market. , so that most domestic biodiesel is only used as oleochemical raw materials, such as the production of epoxy plasticizers, leather fatliquor, natural detergents, fatty acid alcohols, etc., and has not entered the fuel market in large quantities. [0003] In the oil refining industry, cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G27/04
Inventor 刘五连丁以钿
Owner 刘五连
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