Method for preparing biological diesel oil by using inversed micelle catalyst

A biodiesel, reverse micelle technology, applied in chemical instruments and methods, physical/chemical process catalysts, biofuels, etc., can solve problems such as being unsuitable for industrial production needs, and achieve less waste water discharge, simple process lines, and energy consumption. low effect

Inactive Publication Date: 2008-10-29
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, the production process originally suitable for vegetable oil is no longer suitable for the industrial production of biodiesel with waste oil as raw material

Method used

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  • Method for preparing biological diesel oil by using inversed micelle catalyst
  • Method for preparing biological diesel oil by using inversed micelle catalyst
  • Method for preparing biological diesel oil by using inversed micelle catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Add 1 ton of waste oil to 70 kg of 70% sulfuric acid, turn it over with steam for 2 hours at 110 degrees, wash with water, and separate to obtain an acidic oil layer.

[0044] Then slowly add 70 kilograms of cetyltrimethylammonium bromide and 300 kilograms of methyl alcohol in the amount of oil, stir at 2500 revs / min, after forming the reverse micellar catalytic reaction system, heat and reflux for 5 hours, wash with water, leave standstill, The crude biodiesel was obtained, and at 0.008Mpa, the fraction at 200-230°C was collected to obtain pure biodiesel with a total yield of 82.2%.

Embodiment 2

[0046] Add 1 ton of saponin oil to 100 kg of 60% sulfuric acid, steam for 1 hour, wash with water, and separate to obtain an acidic oil layer. Then slowly add 70 kg of oily Tween 80 and polyethylene glycol and 300 kg of methanol, stir at 1500 rpm to form a reverse micellar catalytic reaction system, heat and reflux for 7 hours, wash with water, and let stand to obtain biological Crude diesel oil is distilled at 0.001Mpa and 200-250°C to obtain pure biodiesel with a total yield of 85.7%.

Embodiment 3

[0048] Add 100 kg of 70% sulfuric acid to 1 ton of oil factory waste, turn it over with steam for 1 hour at 110 degrees, wash with water, and separate to obtain an acidic oil layer. Then slowly add 70 kg of oily sodium cetyl sulfate and 200 kg of methanol, stir at 3000 rpm to form a reverse micellar catalytic reaction system, heat and reflux for 8 hours, wash with water, and stand still to obtain crude biodiesel , Distilled at 0.007Mpa and 200-230°C to obtain pure biodiesel with a total yield of 78.2%.

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Abstract

A method for preparing bio-diesel by using reverse micelle catalyst is specifically suitable for the resource utilization of various waste oil such as tailings of oil plants, cooking oil, waste oil, soapstock, swill oil and so on to directly transform waste oil into the increasingly demanded diesel substitute, i.e. bio-diesel, in a reverse micelle catalysis system. The reverse micelle catalyst is composed of surfactant, water and alcohol at a proper ratio. The method comprises the following steps: adding sulfuric acid in the waste oil, introducing steam, boiling, washing with water, and separating to obtain an acidified oil layer; and adding a reverse micelle catalyst at an amount of 0.5 to 10% that of the oil and alcohol at an amount of 10 to 50% that of the acidified oil slowly, stirring at a speed of 1,500 to 3,000 rpm to form a reverse micelle catalysis reaction system, heating and reflowing for 3 to 10 h, washing with water, standing to obtain crude bio-diesel, and distilling at 200 to 250 DEG C and under 0.001 to 0.0001MPa to obtain the pure bio-diesel with a total yield above 75%. The method has the advantages of simple and reliable process flow, high production efficiency, low energy consumption and less waste water discharge.

Description

technical field [0001] The invention relates to a production method for preparing biodiesel by using a reverse micellar catalyst. The invention is especially suitable for resource utilization of various waste oils such as offcuts, catering oil, gutter oil, soapstock, etc., and directly converts waste oils into biodiesel, an increasingly important diesel substitute, in the reverse micellar catalytic system. Background technique [0002] Energy shortage and environmental pollution are major challenges facing mankind. The fossil fuels that people depend on are facing depletion, and the use of fossil fuels has also caused serious environmental pollution problems, such as a large amount of hydrocarbons, aromatics, phenolic compounds, and emissions of sulfur dioxide, nitrogen oxides, and greenhouse gases, which have threatened to the human living environment. Finding non-petroleum resources and non-petroleum energy to produce chemical products and fuels, developing renewable ene...

Claims

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Application Information

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IPC IPC(8): C10G3/00C10G7/06C11B13/00B01J35/00
CPCY02E50/13Y02E50/10Y02P30/20Y02W30/74
Inventor 龚大春曾晶李德莹田毅红涂志英
Owner CHINA THREE GORGES UNIV
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