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Device and method for continuously esterifying kitchen waste grease by using glycerol

A kind of kitchen and oily ester technology, which is applied in the direction of fatty acid esterification, petroleum industry, biofuel, etc., can solve problems such as equipment corrosion, environmental pollution, and impact on product quality, and achieve reduced desulfurization costs, low energy consumption, and increased additional costs. value effect

Inactive Publication Date: 2021-10-29
HEBEI JINGU RECYCLING RESOURCES DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when producing biodiesel from kitchen waste oils and esters on the market, acid-catalyzed esterification is required first. Acid catalysis will produce acid residues that will carbonize the oil, making the color of biodiesel products worse and affecting product quality; there is corrosion to equipment. function, conventional stainless steel reaction vessels cannot be used, and it will also cause environmental pollution, which has become a major problem for biodiesel companies

Method used

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  • Device and method for continuously esterifying kitchen waste grease by using glycerol
  • Device and method for continuously esterifying kitchen waste grease by using glycerol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A device for continuously esterifying kitchen waste oil with crude glycerin, including crude glycerin storage tank 1, kitchen waste oil storage tank 2, multi-stage esterification kettle, multi-stage static mixer and esterified kitchen waste oil Ester storage tank 5;

[0035] The crude glycerin storage tank 1 and the kitchen waste grease storage tank 2 are respectively connected with a multistage static mixer;

[0036] The multi-stage static mixer is sequentially connected with the multi-stage esterification kettle and the storage tank 5 of kitchen waste oil and ester after esterification.

[0037] In one embodiment, the multi-stage esterification tank includes a primary esterification tank 31, a secondary esterification tank 32, a third-level esterification tank 33 and a fourth-level esterification tank 34;

[0038] Kitchen waste oil and ester storage tank 2 is successively connected with primary esterification kettle 31, secondary esterification kettle 32, tertiary es...

Embodiment 2

[0050] Utilize the device of crude glycerol to continuously esterify kitchen waste oil and fat with embodiment 1;

[0051] The method for utilizing crude glycerin to continuously esterify kitchen waste oil and fat comprises the following steps:

[0052] According to the mass ratio of crude glycerin and kitchen waste oil storage tank 2 as 2:100, the crude glycerin in the crude glycerin storage tank 1 and the kitchen waste oil in the kitchen waste storage tank 2 are heated to 150°C , into the primary static mixer 41 through the pipeline to mix evenly, then enter into the primary esterification kettle 31 through the pipeline, stir for 90min at a speed of 30r / min, and control the pressure to normal pressure conditions through a vacuum cooling device to obtain a mixed solution I;

[0053] According to the mass ratio of crude glycerol and mixed solution I as 2:100, the mixed solution I and crude glycerol at a temperature of 150°C are pumped into the secondary static mixer 42 throug...

Embodiment 3

[0057] Utilize the device of crude glycerol to continuously esterify kitchen waste oil and fat with embodiment 1;

[0058] The method for utilizing crude glycerin to continuously esterify kitchen waste oil and fat comprises the following steps:

[0059] According to the mass ratio of crude glycerin and kitchen waste oil storage tank 2 as 3:100, the crude glycerin in the crude glycerin storage tank 1 and the kitchen waste oil in the kitchen waste storage tank 2 are heated to 165°C , into the primary static mixer 41 through the pipeline to mix evenly, and then enter into the primary esterification kettle 31 through the pipeline and stir for 90min at a speed of 45r / min, and control the pressure to normal pressure conditions through a vacuum cooling device to obtain a mixed solution I;

[0060] According to the mass ratio of crude glycerol and mixed solution I as 3:100, the mixed solution I and crude glycerol at a temperature of 165°C are pumped into the secondary static mixer 42...

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PUM

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Abstract

The invention discloses a device and method for continuously esterifying kitchen waste grease by using crude glycerine. The device comprises a crude glycerine storage tank, a kitchen waste grease storage tank, a multi-stage esterification kettle, a multi-stage static mixer and an esterified kitchen waste grease storage tank, the crude glycerol storage tank and the kitchen waste grease storage tank are connected with the multi-stage static mixer; and the multi-stage static mixer is sequentially connected with the multi-stage esterification kettle and the esterified kitchen waste grease storage tank. The device disclosed by the invention is simple in structure, and the sulfur content in the kitchen waste oil ester esterified by the multi-stage esterification kettle is remarkably reduced, so that the desulfurization cost in the biodiesel production process is reduced.

Description

technical field [0001] The invention relates to the technical field of transesterification of kitchen waste oils and esters, in particular to a device and method for continuously esterifying kitchen waste oils and esters with glycerin. Background technique [0002] Kitchen waste oils and fats generally refer to all kinds of low-quality oils that exist in daily life, such as recycled cooking oil, repeatedly used frying oil, etc. The largest source of kitchen waste oils and fats is the grease traps in the sewers of large urban restaurants, long-term consumption It may cause cancer and is extremely harmful to the human body; using kitchen waste oil and ester as raw material through chemical processing to produce biodiesel with high efficiency and low cost can make kitchen waste oil and ester become a beneficial industrial resource. However, In the process of preparing biodiesel based on the principles of kitchen waste oil, acidified oil and other waste oils, how to remove free ...

Claims

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Application Information

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IPC IPC(8): C11C3/06C10L1/02
CPCC11C3/06C10L1/02Y02E50/10
Inventor 赵敏仲王子腾刘少杰褚晓萌赵松赵龙
Owner HEBEI JINGU RECYCLING RESOURCES DEV
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