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Method for efficiently preparing fatty acid from recycled illegal cooking oil

A technology of waste oil and fatty acid, which is applied in fatty acid production, fat oil/fat refining, fatty acid preparation/refining, etc. It can solve the problems of waste oil polluting the environment, endangering diet health, and long preparation cycle, so as to increase the degumming rate and improve the quality , increase the specific surface area and the effect of alkalinity

Inactive Publication Date: 2017-10-27
安庆华威油脂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Throw it away, it will pollute the environment
Due to the low price of waste oil, the preparation of fatty acids from waste oil can not only reduce the preparation cost of high-priced fatty acids, but also solve the problems of environmental pollution and food health hazards caused by waste oil. Longer, lower yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for efficiently preparing fatty acids from waste oil, comprising the steps of:

[0022] S1. Take the gutter oil and filter it once, add phosphoric acid, heat up, keep stirring, then add water, continue keeping warm and stir, centrifuge to get the oil phase, and filter twice to obtain clear liquid oil;

[0023] S2. Add water to the clear liquid oil obtained in S1 and mix evenly, then add catalyst and adsorbent, heat up, keep stirring, feed hydrogen, continue keeping warm and stirring, evaporate under reduced pressure, and collect evaporated gas to obtain fatty acid.

Embodiment 2

[0025] A method for efficiently preparing fatty acids from waste oil, comprising the steps of:

[0026] S1. Take gutter oil and filter it once, add phosphoric acid, raise the temperature to 80°C, keep stirring for 30 minutes, then add water, continue to keep stirring for 30 minutes, centrifuge to take the oil phase, and filter it twice to get clear liquid oil. Among them, filter with 60 mesh The bag is filtered once, the temperature of the first filter is 70°C, and the second filter is performed with the nano-overfrequency vibration module, and the temperature of the second filter is 90°C;

[0027] S2. Add water to the clear liquid oil obtained in S1 and mix evenly, then add catalyst and adsorbent, heat up to 55°C, heat and stir for 60 minutes, feed hydrogen at a speed of 100ml / min, continue heat and stir for 60 minutes, and adjust the pressure to 0.8MPa, the temperature is 600°C, evaporate under reduced pressure, and collect the evaporated gas to obtain fatty acid.

Embodiment 3

[0029] A method for efficiently preparing fatty acids from waste oil, comprising the steps of:

[0030] S1. Take the gutter oil and filter it once, add phosphoric acid, raise the temperature to 90°C, keep stirring for 20 minutes, then add water, continue to keep stirring for 40 minutes, centrifuge to take the oil phase, and filter it twice to get the clear liquid oil, among which, filter with 40 mesh The bag is used for primary filtration, the temperature of the primary filtration is 80°C, and the second filtration is performed with a nano-overfrequency vibration module, the temperature of the secondary filtration is 80°C, and the weight ratio of waste oil, phosphoric acid, and water is 14:0.012:0.5;

[0031] S2, add water to the clear liquid oil obtained in S1 and mix evenly, then add catalyst and adsorbent, heat up to 65°C, keep stirring for 40min, feed hydrogen at a speed of 150ml / min, continue keeping warm and stirring for 40min, and adjust the pressure to 1.2MPa, temperat...

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PUM

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Abstract

The invention discloses a method for efficiently preparing fatty acid from recycled illegal cooking oil. The method comprises the following steps: S1, taking illegal cooking oil, carrying out primary filtration, adding phosphoric acid, heating, carrying out heat preservation and stirring, then adding water, continuously carrying out heat preservation and stirring, centrifuging and taking an oil phase, and carrying out secondary filtration, so that clear oil liquid is obtained; S2, adding water into the clear oil liquid obtained in the S1, uniformly mixing, then adding a catalyst and an adsorbent, heating, carrying out heat preservation and stirring, introducing hydrogen, continuously carrying out heat preservation and stirring, carrying out reduced pressure evaporation, and collecting evaporated gas, so that the fatty acid is obtained. The method disclosed by the invention has the advantages that an appropriate catalyst and adsorbent are selected, and an appropriate preparation technology is combined, so that yield of the fatty acid is greatly increased, preparation period is shortened, and preparation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of waste oil recovery, in particular to a method for efficiently preparing fatty acids from waste oil recovery. Background technique [0002] Waste oil contains a variety of toxic substances, but due to its wide range of sources and low cost, some waste oil from the catering industry is bought by illegal traders, and after simple refining, it flows back into the dining table, which is extremely harmful to the human body. If it is discarded, it will pollute the environment. Due to the low price of waste oil, the preparation of fatty acids from waste oil can not only reduce the preparation cost of high-priced fatty acids, but also solve the problems of environmental pollution and food health hazards caused by waste oil. Longer, lower yield. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a method for reclaiming waste o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B11/00C11C1/02
CPCC11B3/001C11B11/00C11C1/02Y02W30/74
Inventor 陈昌华
Owner 安庆华威油脂科技有限公司
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