Decalcification agent for crude oil

A crude oil decalcification agent, decalcification agent technology, applied in the petroleum industry, refined hydrocarbon oil, etc., can solve the problems of low decalcification rate of hydrocarbon oil, large power consumption of electric desalination process, etc., achieve short electric desalination time and save electric energy The consumption, the effect of improving the decalcification efficiency

Active Publication Date: 2005-08-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that the electrical desalination process in the prior art consumes

Method used

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  • Decalcification agent for crude oil
  • Decalcification agent for crude oil
  • Decalcification agent for crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0024] This group of embodiment adopts actual crude oil sample, example Liaohe high acid value heavy crude oil, specific gravity 0.92 g / cm 3 , colloid 13%, Ca content 46.3ppm; Dagang crude oil (calcium content 104ppm); Shengli Oilfield (calcium content 33.67ppm); Luning pipeline oil (calcium content 26.42ppm), Iranian dirty oil (calcium content 69.7ppm), Iranian residual oil (calcium content 241.1ppm).

[0025] Mix deionized water, 25ppm BP2040 demulsifier (produced by Henan Luoyang Mengjin Petrochemical Anticorrosion Material Factory), different concentrations of chelating agents and different concentrations of quaternary ammonium salts, and 70 grams of crude oil with different calcium contents, at 60 ° C, 1000 V / Under the centimeter electric field, act for 6 minutes, then separate the crude oil and water, and measure the calcium content in the crude oil after removal, and the results are listed in Table 1. Wherein in embodiment 1, quaternary ammonium salt is C 16 h 33 N...

Embodiment 7～12

[0028] This group of embodiment adopts actual crude oil sample, example Liaohe high acid value heavy crude oil, specific gravity 0.92 g / cm 3 , colloid 13%, Ca content 46.3ppm; Dagang crude oil (calcium content 104ppm); Shengli Oilfield (calcium content 33.67ppm); Luning pipeline oil (calcium content 26.42ppm), Iranian dirty oil (calcium content 69.7ppm), Iranian residual oil (calcium content 241.1ppm).

[0029] Mix deionized water, 25ppm BP2040 demulsifier (produced by Henan Luoyang Mengjin Petrochemical Anticorrosion Material Factory), different concentrations of chelating agents and different concentrations of crown ethers, with 70 grams of crude oil with different calcium contents, at 60 ° C, 1000 V / cm After acting under the electric field for 6 minutes, the crude oil and water were separated, and the calcium content in the crude oil after desorption was measured. The results are listed in Table 2.

[0030]

Embodiment 13

[0038] By each step and condition of embodiment 1, just do not add demulsifier, its result decalcification rate is 86.6%.

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Abstract

A decalcification agent for crude oil contains at least one chelating agent chosen from monocarboxylic acid, binary carboxylic acid, organic phosphonic acid, amino acid or its derivative, polyphosphoric acid and hydroxy quinoline, optional surfactant and demulsifier, and at least one of monoalcohol or biol polymer quaternary ammonium salt, quaternary phosphonium salt and crown ether.

Description

technical field [0001] The invention relates to a crude oil decalcifying agent. Background technique [0002] In recent years, with the development of oil extraction technology, a large amount of heavy crude oil has been extracted. The metal content in these crude oils, especially the content of some alkaline earth metals such as Ca 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 experienced poisoning and deactivation of catalytic cracking catalysts, which not only greatly reduces the yield of light oil, but also affects the quality of downstream residual oil, greatly affecting the refinery's crude oil processing profits. i...

Claims

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Application Information

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IPC IPC(8): C10G29/22
Inventor 乔建江张磊张惠明陈永福张卫东
Owner CHINA PETROLEUM & CHEM CORP
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