Organic chloride removing method for waste cooking oil

A technology for catering waste oil and organochlorine, which is applied in the direction of fat oil/fat refining, fat production, fatty acid production, etc. It can solve the problems of low organic chlorine removal rate, immaturity, and damage to equipment and pipelines, so as to improve the dechlorination effect, The effect of low cost and avoiding pollution

Inactive Publication Date: 2016-03-02
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The pretreatment process of cooking waste oil as raw material of bio-jet fuel is not yet mature. Although the existing electric desalination process can remove most of the inorganic chlorine, the removal rate of organic chlorine in the raw material is very low.
Most of the residual chlorine after desalination exists

Method used

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  • Organic chloride removing method for waste cooking oil
  • Organic chloride removing method for waste cooking oil
  • Organic chloride removing method for waste cooking oil

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1

[0039] Base oil preparation: Base oil is prepared by pre-desalting and dehydrating the raw material of catering waste oil for three consecutive times. Using the base oil test can fully eliminate the influence of inorganic chlorine, and verify the test effect more conveniently and quickly.

[0040] Pre-desalination and dehydration test conditions: temperature 90°C, electric field strength 1300V / cm, water injection 12wt%, shaking 200 times, residence time 30min. Three-stage pre-desalination, the conditions of each pre-desalination are the same.

[0041] Considering that the inorganic chlorine content in the base oil is very low, it is assumed that all the residual chlorine is organic chlorine, and the total chlorine m is analyzed and detected. 0 is 17ppm. After the dechlorination reaction and electrolysis are completed, the upper oil sample and the lower water sample are respectively taken for salt and water content analysis. In addition, the upper oil samp...

Example Embodiment

[0061] Example 2

[0062] Use benzyl trimethyl ammonium hydroxide as organochlorine transfer agent B, the base oil used is the same as Example 1, select different types of organochlorine transforming agent A, and auxiliary agent C and B benzyl trimethyl ammonium hydroxide are compounded , the dosage remains unchanged, is still 170ppm, the agent chlorine ratio (mass ratio)=10:1, the operation steps are the same as in Example 1, other process conditions are unchanged, investigate the different types of organochlorine conversion agents A to dechlorination performance The experimental results are shown in Table 2.

[0063] The proportion of each component added to the dechlorination agent is:

[0064] The components of 1# dechlorination agent are: A sodium ethoxide 70%wt, B benzyltrimethylammonium hydroxide 20wt%, C glycerol 10%wt;

[0065] The components of 2# dechlorination agent are: A sodium methoxide 70%wt, B benzyltrimethylammonium hydroxide 20wt%, C glycerol 10%wt;

[00...

Example Embodiment

[0073] Example 3

[0074] Using A (potassium methoxide)-B (benzyl trimethyl ammonium hydroxide)-C (glycerol) as the compound system, changing the ratio of A and B, the operation steps are the same as in Example 2. The effect of the ratio on the dechlorination performance is shown in Table 3. The electrodesalination conditions were the same as those of the above-mentioned Examples 1 and 2. The base oil used was the same as in Example 1.

[0075] The dosage of the dechlorinating agent is 170ppm, the agent-chlorine ratio (mass ratio) is 10:1, and the proportions of the components of the dechlorinating agent added are:

[0076] 1#A potassium methoxide 70%wt, B benzyltrimethylammonium hydroxide 20%wt, C glycerol 10%wt;

[0077] 2#A potassium methoxide 65%wt, B benzyltrimethylammonium hydroxide 25%wt, C glycerol 10%wt;

[0078] 3#A potassium methoxide 60%wt, B benzyltrimethylammonium hydroxide 30%wt, C glycerol 10%wt;

[0079] 4#A potassium methoxide 55%wt, B benzyltrimethylamm...

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Abstract

The invention discloses an organic chloride removing method for waste cooking oil. The organic chloride removing method aims at eliminating the harm of organic chloride to subsequent processing equipment and comprises the steps that at least one stage of electric desalting is conducted on the waste cooking oil; then 6-15% by weight of water is added into the waste cooking oil subjected to electric desalting to be mixed with the oil, and a dechlorination agent is added to perform dechlorination reaction, wherein the dechlorination reaction conditions are described as: the reaction temperature is 90-150 DEG C, the reaction time is 45-120 minutes, the stirring rate is 100-600 r/min, and the agent-chlorine mass ratio is 2-20:1 generally; a reaction product obtained after dechlorination reaction is subjected to electric desalting again to obtain organic chlorine removed cooking oil. The organic chloride in waste cooking oil can be efficiently removed by using the method at low cost.

Description

technical field [0001] The invention belongs to the pretreatment process of meal waste oil (commonly known as "gutter oil"), and in particular relates to a method for removing organic chlorine from meal waste oil as raw material oil of biological jet fuel. Background technique [0002] Under the background of gradually declining fossil fuel reserves and increasingly severe environmental protection, biofuel is a new type of energy that can replace petrochemical energy, and its research and application have attracted more and more attention. [0003] Bio-jet fuel is aviation kerosene produced from renewable resources. Compared with traditional petroleum-based aviation kerosene, bio-jet fuel can reduce carbon dioxide emissions by more than 55%, and is renewable, sustainable, and environmentally friendly. Advantage. Foreign bio-jet fuel technology started earlier and developed rapidly. Major countries in Europe and the United States have successively carried out R&D and testing...

Claims

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Application Information

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IPC IPC(8): C11C3/00C11B3/00
Inventor 唐应彪崔新安袁海欣申明周李春贤邹洋许兰飞曹振兴
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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