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A kind of method for hydrothermal cracking of high acid crude oil

A hydrothermal cracking, high acid crude oil technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of difficult sewage treatment, complex device design, high processing cost, reduce coking and save operating costs , the effect of saving operating costs

Active Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the gradual increase in the output of high-acid crude oil, the method of blending low-acid crude oil cannot fundamentally solve the problem of processing high-acid crude oil; both pyrolytic deacidification and hydrodeacidification need to go through the process of electrical desalting, and the processing cost is relatively high ; The method of deacidification with lye will cause serious emulsification of crude oil, difficult separation, and the sewage generated at the same time is also difficult to treat, which brings environmental problems
[0008] CN200910089173.4 provides an atmospheric and vacuum distillation equipment and atmospheric and vacuum distillation method for high-acid crude oil, which replaces the severely corroded parts in the processing of high-acid crude oil with corrosion-resistant alloy materials. Extend the operating period of the unit, but if the properties of high-acid-containing raw materials change, a lot of practical experience is needed to find new corrosion points that may occur
The device design is complicated, the cost is high, and it is not suitable for existing devices

Method used

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  • A kind of method for hydrothermal cracking of high acid crude oil
  • A kind of method for hydrothermal cracking of high acid crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This example is an implementation of the processing of high sour crude oil.

[0037] The properties of the raw materials used in the test are listed in Table 1. It can be seen from Table 1 that the acid value of the raw material is 4.58 mgKOH / g, which belongs to high-acid crude oil. The mixing valve in the electric desalination process is used as the oil-water mixer, and the oil-water mixing conditions are shown in Table 2.

[0038] The hydrogen hydrothermal cracking reactor is a circular straight cylindrical high temperature and high pressure reactor with no reactor components inside. The reaction conditions and results of hydrogen hydrothermal cracking are shown in Table 2.

Embodiment 2

[0040] This example is an implementation of the processing of high sour crude oil.

[0041] The properties of the raw materials used in the test are listed in Table 1. The mixing valve in the electric desalination process is used as the oil-water mixer, and the oil-water mixing conditions are shown in Table 2.

[0042] The hydrogen hydrothermal cracking reactor is a circular straight cylindrical high temperature and high pressure reactor with no reactor components inside. Using a vertical high-pressure separator, the hydrothermal cracking reaction conditions and results are shown in Table 2.

[0043] Table 1 Properties of high sour crude oil

[0044] project data Density (20℃), g / cm 3

[0045] Table 2 Experimental conditions and results

[0046] project Example 1 Example 2 oil-water mixing condition Water injection volume, mass% 18.0 30.0 Mixing strength, MPa 0.05 0.05 Hydrothermal Cracking Reaction Conditions ...

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Abstract

The invention provides a hydrogen aquathermolysis method of high-acid crude oil. By utilization of a characteristic that the high-acid crude oil is prone to emulsification, after water and the high-acid crude oil are uniformly mixed, hydrogen is fed into the oil-water mixture, and the mixture is fed into a hydrogen aquathermolysis reactor in a lower feeding manner. The high-acid crude oil is subjected to hydrogenation deacidification and pyrolysis at a high temperature while demulsification is performed simultaneously. Gas-liquid separation is achieved in a high-pressure separator and dehydration and desalination are achieved.

Description

technical field [0001] The invention relates to a method for treating high-acid crude oil, in particular to a method for treating high-acid crude oil by using a hydrothermal cracking method. Background technique [0002] Crude oil is a non-renewable energy source. With the rapid development of the world economy, people's dependence on crude oil continues to increase. After years of rapid exploitation, crude oil continues to show a trend of inferior quality. [0003] At present, the output of high-acid crude oil accounts for about 10% of the total output of crude oil in the world, and it shows an increasing trend year by year. Because the acid substances in crude oil mainly exist in the form of naphthenic acid, naphthenic acid can react with iron at a certain temperature, causing serious corrosion of refining equipment. Therefore, in the processing of crude oil, the level of acid content is an important factor that cannot be ignored. Therefore, although the price of high-a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
Inventor 贾丽王喜彬彭绍忠郭蓉曾榕辉蒋立敬
Owner CHINA PETROLEUM & CHEM CORP
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