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Additive for removing organochlorine from crude oil and removal technology thereof

An additive and organochlorine technology, applied in the field of oil refining process additives, can solve the problems of catalyst poisoning, atmospheric and vacuum tower damage, FCC catalyst damage, etc., and achieve the effects of reducing corrosion and reducing chloride ion content

Inactive Publication Date: 2012-06-13
SHENYANG POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007](3) Chlorine hazards
[0008]①Hazard to atmospheric and vacuum tower
[0010]②Hazard to reformer catalyst
[0011]The reforming unit uses a perchlorinated low-platinum rhenium catalyst. During the operation of the reforming unit, in order to give full play to the activity of the catalyst, select stability and stability, the chlorine content in raw oil naphtha is required to be less than 1ppb. If the chlorine content in the reforming raw material is too high, after entering the pre-hydrogenation reaction, the chlorine in the molecule will be replaced by hydrogen, while C1- Combined with H to form HCI, which destroys the water-chlorine balance of the catalyst, poisons the catalyst and loses its activity

Method used

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  • Additive for removing organochlorine from crude oil and removal technology thereof
  • Additive for removing organochlorine from crude oil and removal technology thereof
  • Additive for removing organochlorine from crude oil and removal technology thereof

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specific Embodiment approach

[0033] detailed description: The present invention will be further explained below in conjunction with the drawings:

[0034] The present invention will be described in detail below in conjunction with embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0035] The invention provides an additive for removing organic chlorine in crude oil. The additive is prepared by compounding a phase transfer catalyst, an alkali and a solvent in the following proportions: the mass percentage of the phase transfer catalyst is 2%-10%, and the mass percentage of the alkali It is 10%-30%, and the mass percentage of solvent is 60-88%.

[0036] The phase transfer catalyst is a quaternary ammonium base or polyethylene glycol; the base is sodium hydroxide, sodium ethoxide or ethanolamine; the solvent is one of the following three situations: a mixture of water and ethanol, a mixture of water and methanol, water, ethanol , A mixture of methanol.

[...

Embodiment 1

[0046] Example 1. According to the mass ratio of 3% N,N-dimethyl-octadecyl-benzyl ammonium hydroxide, 20% sodium hydroxide, 42% water and 35% ethanol are mixed to prepare crude oil. Chlorine.

Embodiment 2

[0047] Example 2. A crude oil dechlorination agent was prepared by mixing 4% triethylbenzylammonium hydroxide, 15% sodium ethoxide, 46% water and 35% ethanol by mass ratio.

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Abstract

The invention provides an additive for removing organochlorine from crude oil. The additive is characterized by being prepared through compounding of 2%-10% of a phase-transfer catalyst, 10%-30% of alkali and 60-88% of a solvent by mass. During electrical desalting and dewatering, the additive of the invention is added together with a demulsifier, thus being able to effectively remove an organic chloride from crude oil, reduce the content of chloride ions in condensed water at the top of a distillation tower, alleviate corrosion of tower top distillate pipelines and cooling-heat transfer equipment, as well as having no side effect on subsequent processes.

Description

technical field [0001] The invention relates to an oil refining process additive, in particular to an additive preparation method for removing organic chlorine compounds in crude oil and its application in the oil refining device removal process. Background technique [0002] (1) Source and form of organochlorine compounds in crude oil [0003] In recent years, due to the gradual increase in domestic demand for oil, the depth of crude oil extraction has increased. In order to increase oil recovery, a large amount of chlorine-containing oil recovery additives have been injected during oil recovery, resulting in an increase in the organic chlorine content in crude oil. According to our research, there are more than 20 kinds of chlorine-containing chemical additives injected during oil recovery, the common ones are SP169 demulsifier, SAE demulsifier, D80 demulsifier, SJN-1 viscosity reducer, JN-510 viscosity reducer, poly Quaternary ammonium clay stabilizer, NW-l clay stabiliz...

Claims

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Application Information

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IPC IPC(8): C10G29/00
Inventor 刘公召
Owner SHENYANG POLYTECHNIC UNIV
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