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Extraction method of biodiesel

A technology for biodiesel and animal and vegetable oils, which is applied in the fields of biofuel, petroleum industry, and fat production. It can solve the problems of biodiesel with many impurities, complicated process, and low conversion rate, and achieve high utilization rate, good separation effect, and improved efficiency. The effect of utilization

Inactive Publication Date: 2019-08-02
YANGZHOU JIANYUAN BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the main problems at present are: the conversion rate of methanol and ethanol is low, generally only 40%-60%, because lipase is effective for the esterification or transesterification of long-chain fatty alcohols, but for short-chain fatty alcohols such as methanol or ethanol conversion rate is low
However, the biodiesel produced by this method has more impurities and lower utilization rate, and the process is complicated and wastes cost

Method used

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  • Extraction method of biodiesel
  • Extraction method of biodiesel
  • Extraction method of biodiesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for refining biodiesel, comprising the steps of:

[0028] Step S1, pretreatment: pump the filtered corn oil into the hydration tank, feed water vapor and stir at a speed of 60r / min for 50min, heat up to 75°C, add deionized water at 75°C, and stir at a speed of 80r / min, Until the colloidal particles are flocculated and separated, stop stirring and let stand for 8 hours, filter the upper layer of oil to obtain degummed corn oil, and control the weight ratio of corn oil and deionized water to 1:8;

[0029] Step S2, heating the degummed corn oil prepared in step S1 to 60°C, dehydrating and degassing, then transferring to the deacidification tower, passing water vapor until the free acid and water vapor are co-distilled, condensed and precipitated, and the passing speed is 10000r / min centrifuge for 2min, filter, add 4% methanol and acid catalyst to the filtrate for esterification reaction, distill methanol after 2h of reaction, filter and fractionate to obtain biod...

Embodiment 2

[0034] A method for refining biodiesel, comprising the steps of:

[0035]Step S1, pretreatment: pump the filtered corn oil into the hydration tank, feed water vapor and stir at a speed of 60r / min for 50min, heat up to 75°C, add deionized water at 75°C, and stir at a speed of 80r / min, Until the colloidal particles are flocculated and separated, stop stirring and let stand for 8 hours, filter the upper layer of oil to obtain degummed corn oil, and control the weight ratio of corn oil and deionized water to 1:8;

[0036] Step S2, heating the degummed corn oil prepared in step S1 to 60°C, dehydrating and degassing, then transferring to the deacidification tower, passing water vapor until the free acid and water vapor are co-distilled, condensed and precipitated, and the passing speed is 10000r / min centrifuge for 2min, filter, add 4% methanol and acid catalyst to the filtrate for esterification reaction, distill methanol after 2h of reaction, filter and fractionate to obtain biodi...

Embodiment 3

[0041] A method for refining biodiesel, comprising the steps of:

[0042] Step S1, pretreatment: pump the filtered corn oil into the hydration tank, feed water vapor and stir at a speed of 60r / min for 50min, heat up to 75°C, add deionized water at 75°C, and stir at a speed of 80r / min, Until the colloidal particles are flocculated and separated, stop stirring and let stand for 8 hours, filter the upper layer of oil to obtain degummed corn oil, and control the weight ratio of corn oil and deionized water to 1:8;

[0043] Step S2, heating the degummed corn oil prepared in step S1 to 60°C, dehydrating and degassing, then transferring to the deacidification tower, passing water vapor until the free acid and water vapor are co-distilled, condensed and precipitated, and the passing speed is 10000r / min centrifuge for 2min, filter, add 4% methanol and acid catalyst to the filtrate for esterification reaction, distill methanol after 2h of reaction, filter and fractionate to obtain biod...

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Abstract

The invention discloses an extraction method of biodiesel. The extraction method comprises the following steps: S1, pretreatment; S2, preparation of a biodiesel semi-finished product; S3, homogenization; S4, drying; and S5, preparation of the biodiesel. The biodiesel is extracted from animal and plant oil, the animal and plant oil is pretreated firstly in the biodiesel extraction process, the animal and plant oil is degummed by water vapor, substances such as phospholipid, protein, phlegm and glycosyl diglyceride are removed, the stability of the extracted biodiesel is improved, these substances can be prevented from affecting the extraction process and increasing difficulty of the extraction process, then, an added compound catalyst can improve the catalysis effect, shorten the reaction time and promote extraction, the steps of the method are simple and effective, and compared with the traditional extraction method, the method can save time and cost, and the extracted biodiesel has high utilization rate and obviously enhanced stability.

Description

technical field [0001] The invention belongs to the field of bioengineering and energy, in particular to a method for refining biodiesel. Background technique [0002] Biodiesel is mainly produced by chemical method, using animal and vegetable oils and low-carbon alcohols such as methanol and ethanol to carry out transesterification reaction under inorganic strong acidic or strong basic catalyst and high temperature to generate corresponding fatty acid methyl ester or ethyl ester, and then undergo Wash and dry to obtain biodiesel. Methanol or ethanol can be recycled in the production process, and glycerin, a by-product, can be produced in the production process. Recently, people have begun to study the synthesis of biodiesel by biological enzyme method, that is, to use animal fat and low-carbon alcohol to carry out transesterification reaction through lipase to prepare corresponding fatty acid methyl ester and ethyl ester. Enzymatic synthesis of biodiesel has the advantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11C3/04C11C3/10C11B3/12C10L1/02
CPCC11B3/001C11B3/008C11C3/04C11C3/10C10L1/02C11B3/12Y02E50/10
Inventor 郑永庭
Owner YANGZHOU JIANYUAN BIOLOGICAL TECH CO LTD
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