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Method for removing metal from hydrocarbon oil by using by product generated in producing fatty acid through oxidizing paraffin

A technology for fatty acid and metal removal agent, applied in the metal field, can solve the problems of unfavorable industrialization, low removal efficiency, low removal efficiency, etc., and achieve the effect of low cost

Inactive Publication Date: 2005-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned decalcification technology has a certain effect on the removal of calcium in crude oil, but the removal efficiency is not high, especially for crude oil with high calcium content, such as large amount of demetallization agent, high cost, which is not conducive to industrialization or The removal efficiency is low, so it cannot meet the requirements of the refining process, especially the requirements of catalytic cracking and heavy oil hydrogenation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The crude oil used in the experiment is Beijiang crude oil (calcium content: 112.3ppm). The by-products of fatty acid oxidation produced by a oleochemical plant are used for decalcification. The demulsifier NS-9906 and the by-products are listed in Table 1. Add water injection, the water injection rate is 10%, and then mix it with crude oil in a juice blender to fully mix the oil and water, pour the oil-water mixture into a conical glass tank, put the conical tank into a DP-II electric desalter, the desalter electric field Gradient 200v / cm, temperature 80°C, time 1 hour. After the oil and water are separated, take the de-oiled oil sample and use the plasma emission spectrometer to measure the calcium content. Table 1 is the result of decalcification.

[0018] agent / calcium molar ratio

Embodiment 2

[0020] In this embodiment, the oil used in the experiment is heavy oil from the ninth district of Karamay, Xinjiang (calcium content 240ppm), the demulsifier FC9301, the addition amount is 50ppm, and the water injection rate is 10%. Experimental method and demetallization agent are identical with embodiment 1. Table 2 is the experimental results.

[0021] agent / calcium molar ratio

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PUM

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Abstract

A method for removing metals from hydrocarbon oils is to fully mix and emulsify hydrocarbon oils with metal removal agents, water injection and demulsifiers, so that metals in hydrocarbon oils form water-soluble complexes, dissolve in water, and separate oil and water And removal, wherein the demetallization agent is a kind of C containing C obtained by washing and cooling the tail gas of the paraffin oxidation tower in the process of producing fatty acid by paraffin oxidation. 1 ~C 4 Fatty acid by-products. The method of the invention has the advantages of low cost, high removal efficiency and easy industrialization, and the hydrocarbon oil obtained therefrom can meet the calcium and magnesium content requirements of catalytic cracking, hydrocracking or hydrofining processes.

Description

technical field [0001] The invention relates to a method for removing metals such as calcium and magnesium from hydrocarbon oil such as crude oil, heavy hydrocarbon residue or solvent deasphalted oil. technical background [0002] In recent years, with the development of oil extraction technology, many heavy crude oils have been extracted. The metal content in these crude oils, especially the content of some alkaline earth metals such as Ca and Mg has increased greatly, and their influence on crude oil processing has been paid more and more attention by people. Studies have shown that the increase of Ca content in raw oil will significantly reduce the molecular sieve and matrix area of ​​the catalyst, which will directly affect the activity of the catalyst. In recent years, some refineries refining high-Ca crude oil have been poisoned and deactivated by catalytic cracking agents, which not only greatly reduces the yield of light oil, but also affects the quality of downstre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G17/02C10G21/16
Inventor 徐振洪李本高汪燮卿
Owner CHINA PETROLEUM & CHEM CORP