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Method for removing chlorine-containing organic compounds in waste oil

A technology for the removal of organic compounds, applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil treatment products, etc., can solve the problems of increasing operational process difficulty, high operating cost, increasing cost, etc., and achieves good dechlorination effect and low thermal cost Low, high dechlorination rate effect

Inactive Publication Date: 2019-01-11
NINGBO ZHONGXUN ENVIRONMENTAL TECH CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the hydrogenation removal process is mature, but requires more complex equipment and higher operating costs; although solid adsorption requires a higher adsorption removal rate, due to the limitation of its adsorption capacity, when the chloride content is high, The adsorbent will need to be regenerated due to the rapid reduction of the adsorption capacity. Frequent regeneration will inevitably increase the difficulty of the operation process and increase the cost; the phase transfer catalyst refers to the full reaction between the organic chlorine transfer agent and the chlorine-containing organic compounds in the waste oil. Generate water-soluble chlorine-containing organic compounds, so that oil-water separation can be used to remove chlorine in waste oil. This method has high dechlorination rate and good dechlorination effect. technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0022] Add triethylbenzyl ammonium chloride and sodium hydroxide or potassium hydroxide to dehydrated alcohol for reaction, triethylbenzyl ammonium chloride: sodium hydroxide: the mass ratio of dehydrated alcohol is 10:11:32, The reaction temperature is 50 DEG C, and the reaction time is 30 minutes. After the reaction is completed, stand and suction filter to obtain an anhydrous ethanol solution composed of the product and sodium hydroxide. Add 20% sodium hydroxide aqueous solution to the above solution and stir thoroughly, The mass ratio of % sodium hydroxide aqueous solution to the above-mentioned solution is 1:1, and the organochlorine transfer agent is obtained.

[0023] The mass ratio of organochlorine transfer agent to waste oil is 1:1000, and the mixed oil sample is heated at 60°C for 0.5h and stirred evenly to carry out the dechlorination reaction. Then the mixed solution was left to stand for 10 min, and the organochlorine transfer agent was separated from the upper w...

specific Embodiment 2

[0024] Add triethylbenzyl ammonium chloride and sodium hydroxide or potassium hydroxide to dehydrated alcohol for reaction, triethylbenzyl ammonium chloride: sodium hydroxide: the mass ratio of dehydrated alcohol is 10:11:32, The reaction temperature is 50 DEG C, and the reaction time is 30 minutes. After the reaction is completed, stand and suction filter to obtain an anhydrous ethanol solution composed of the product and sodium hydroxide. Add 20% sodium hydroxide aqueous solution to the above solution and stir thoroughly, The mass ratio of % sodium hydroxide aqueous solution and above-mentioned solution is 2:1, makes organochlorine transfer agent.

[0025] The mass ratio of organochlorine transfer agent to waste oil is 1:800, and the mixed oil sample is heated at 70°C, kept at constant temperature for 0.5h, stirred evenly, and dechlorinated. Then the mixed solution was left to stand for 10 min, and the organochlorine transfer agent was separated from the upper waste oil. Th...

specific Embodiment 3

[0026] Add triethylbenzyl ammonium chloride and sodium hydroxide or potassium hydroxide to dehydrated alcohol for reaction, triethylbenzyl ammonium chloride: sodium hydroxide: the mass ratio of dehydrated alcohol is 10:11:32, The reaction temperature is 50 DEG C, and the reaction time is 30 minutes. After the reaction is completed, stand and suction filter to obtain an anhydrous ethanol solution compounded by the product and sodium hydroxide. Add 20% sodium hydroxide aqueous solution to the above solution and stir fully, The mass ratio of % sodium hydroxide aqueous solution and above-mentioned solution is 4:1, makes organochlorine transfer agent.

[0027] The mass ratio of organochlorine transfer agent to waste oil is 1:500, and the mixed oil sample is heated at 60°C, kept at constant temperature for 0.5h, stirred evenly, and dechlorinated. Then the mixed solution was left to stand for 10 min, and the organochlorine transfer agent was separated from the upper waste oil. Water...

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PUM

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Abstract

The invention provides a method for removing chlorine-containing organic compounds in waste oil, and belongs to the technical field of waste oil recycling. An organochlorine transfer agent is preparedby adding benzyltriethylammonium chloride and an alkali agent to anhydrous ethanol and carrying out a reaction, and hydroxyl anions in the organochlorine transfer agent and carbon cations of the chlorine-containing organic compounds undergo a nucleophilic substitution reaction to convert the oil-soluble chlorine-containing organic compounds into water-soluble chlorine-containing compounds, so water can be added to the product to dissolve the formed water-soluble chlorine-containing compounds in water in order to remove the water-soluble chlorine-containing compounds from an oil phase, and theseparated oil phase is oil free from the chlorine-containing compounds. The method has the advantages of low cost, high dechlorination rate, good dechlorination effect, mild reaction conditions and no secondary pollution.

Description

technical field [0001] The invention relates to the technical field of recycling waste oil, in particular to a method for removing chlorine-containing organic compounds in waste oil. Background technique [0002] Chlorine in waste lubricating oil generally exists in two forms, one is organic chlorine in chlorinated alkanes, and the other is inorganic chloride formed by alkaline earth metals. The main reason why chlorine corrosion occurs frequently is that only most of the inorganic matter can be removed during the electric desalination process, and most of the chlorine-containing organic matter remains in the waste lubricating oil and enters the subsequent device, causing poisoning of the device catalyst . In the subsequent catalytic hydrogenation process, organic chlorides will produce HCl, and N-containing substances may produce NH 3 , resulting in HCl and NH 3 combined to form NH 4 Cl, causing pipeline blockage and affecting the service life of equipment. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/04
CPCC10G53/04C10G2300/1007C10G2300/202C10G2400/10
Inventor 王鸣姚靖靖张帅孟家平
Owner NINGBO ZHONGXUN ENVIRONMENTAL TECH CO LLC
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