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Method of catalytic elimination of petroleum acid in hydrocarbon oil

A petroleum acid and hydrocarbon oil technology, applied in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems of large process investment and high equipment investment

Active Publication Date: 2010-02-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalytic hydrogenation is a good method for deacidification effect, but it requires high-pressure and high-temperature equipment, and the equipment investment is high. In addition, it also needs hydrogen, and its process investment is large.

Method used

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  • Method of catalytic elimination of petroleum acid in hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Raw material A and catalyst X are in contact in a fluidized bed at a reaction temperature of 400℃ and a space velocity of 1h -1 , Under the condition that the weight ratio of catalyst to raw material is 1, the total acid value of the liquid product is 0.38mgKOH / g, and the deacidification rate is as high as 98.4%.

Embodiment 2

[0035] Raw material A and catalyst X are in contact in a fluidized bed at a reaction temperature of 200°C and a space velocity of 9h -1 , Under the condition that the weight ratio of catalyst to raw material is 20, the total acid value of the liquid product is 0.32mgKOH / g, and the deacidification rate is as high as 98.7%.

Embodiment 3

[0037] Raw material A and catalyst X are in contact in a fluidized bed, at a reaction temperature of 570℃ and a space velocity of 90h -1 , Under the condition that the weight ratio of catalyst to raw material is 10, the total acid value of the liquid product is 0.98mgKOH / g, and the deacidification rate is as high as 96%.

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Abstract

The invention relates to a catalytic method for removing petroleum acid from hydrocarbon oil. It comprises steps of mixing acid-containing hydrocarbon oil with acid catalyst, and carrying out reactionwith airspeed being 0.1- 100 h-1 at 100- 600 Deg. C. The method can remove petroleum acid from high acid containg crude oil and petroleum fractions with the acid removal rate being as high as 95%.

Description

Technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the absence of hydrogen, and more specifically, is a method for catalytically removing petroleum acid in hydrocarbon oil. Background technique [0002] Acidic substances in crude oil refer to inorganic acids, phenols, mercaptans, aliphatic carboxylic acids and naphthenic acids. But naphthenic acid is the most important acidic oxide in crude oil, and its content accounts for about 90% of the acidic oxide. Naphthenic acid is a monocarboxylic acid, its typical structure is R n (CH) m COOH, R represents a five-membered ring or a six-membered ring, n=1 to 5, and m>1. Because of the differences in R, n, and m, there are more than 1,500 naphthenic acids with different structures in crude oil. Therefore, naphthenic acid is a very complex general term for high-boiling carboxylic acid mixtures. The petroleum acid content in crude oil is now generally used to indicate its level indirectly by the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/22
Inventor 侯栓弟傅晓钦汪燮卿田松柏龙军张久顺舒兴田罗一斌达志坚
Owner CHINA PETROLEUM & CHEM CORP