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A kind of method for removing sodium salt from hydrocarbon oil

A hydrocarbon oil removal technology, which is applied in the treatment of hydrocarbon oil, dehydration/demulsification by chemical methods, petroleum industry, etc., can solve the problems of complex components of sodium removal agent and low efficiency of sodium removal, and solve the problem of catalytic cracking catalyst Effects of sodium poisoning, easy industrial promotion and application, and good application prospects

Active Publication Date: 2022-03-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sodium removal agent has complex components, low sodium removal efficiency, and the highest removal rate of organic sodium is only 82%.

Method used

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  • A kind of method for removing sodium salt from hydrocarbon oil
  • A kind of method for removing sodium salt from hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The properties of crude oil are shown in Table 1. After preheating 100g of crude oil at 60°C, add 8g of distilled water, quantitative demulsifier BS01 and 30ug / g sodium removal additive dodecyltributylphosphorous chloride (produced by Kent Catalytic Materials Co., Ltd.), Mix evenly, then transfer it to an electric desalination tank and seal it, and treat it in an electrostatic field with a temperature of 120°C and an electric field strength of 500V / cm for 40 minutes to separate oil and water. When the temperature drops to about 60°C, take an oil sample to analyze the salt content and metal sodium content. The results are shown in Table 2.

Embodiment 2

[0025] Hexadecyl trihydroxypropyl phosphonium bromide (produced by Kent Catalytic Materials Co., Ltd.) was used as a sodium removal aid, and the operation was performed according to the method of Example 1. The dosage and results are shown in Table 2.

Embodiment 3

[0027] With alkoxy modified quaternary phosphonium salt - dodecyloxymethyl tributyl phosphorus chloride (produced by Kent Catalyst Materials Co., Ltd.) as sodium removal aid, according to the method of Example 1, the dosage and results are shown in the table 2.

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Abstract

A method for removing sodium salts from hydrocarbon oils, comprising: mixing hydrocarbon feedstock oils with quaternary phosphonium salt desodium aids, demulsifiers and water in a mixer, and entering an electric desalting device for desalting treatment to obtain Reduced hydrocarbon oil. The quaternary phosphonium salt has the general formula [R 1 P + (R 2 ) 3 ] n x n‑ compounds, where R 1 for C 8 -C 22 Alkyl or alkoxy; R 2 for C 1 -C 4 Alkyl or hydroxyalkyl, phenyl or benzyl; n is an integer of 1-3, and X is an anionic group. The method of the invention can effectively solve the problem of metal sodium pollution of the catalytic cracking unit of the oil refinery caused by the chemical agent in the oil field, and greatly reduce the risk of sodium poisoning of the catalytic cracking catalyst.

Description

technical field [0001] The invention relates to a method for demetallizing hydrocarbon oil, in particular to a method for removing metal sodium salt from hydrocarbon raw material oil. Background technique [0002] In recent years, with the increasingly heavy and inferior quality of petroleum resources, as well as the use of a large number of oilfield chemicals in the process of oil recovery and gathering and transportation, the proportion of pollutants in crude oil processed by refineries has increased. Among them, metal pollutants have a negative impact on the catalytic cracking process. The influence is getting bigger and bigger. The polluting elements mainly include nickel, vanadium, iron, calcium and sodium, etc., which are continuously deposited on the catalyst during the catalytic cracking reaction process, causing catalyst poisoning by destroying the crystal structure, blocking pores, and covering active sites. And this process is generally irreversible. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04C10G33/02
CPCC10G33/04C10G33/02C10G2300/201C10G2300/202C10G2300/1033
Inventor 沈明欢于丽王振宇秦冰张峰苗杰
Owner CHINA PETROLEUM & CHEM CORP