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Method for processing crude oil with high acid value

A crude oil and total acid value technology, applied in the petroleum industry, cracking, catalytic cracking, etc., can solve the problems of unreported process methods, difficult industrial implementation, high operating costs, etc., achieve good deacidification effect, avoid corrosion, and inhibit harmful The effect of action

Active Publication Date: 2008-01-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In summary, although a variety of methods for treating high-acid crude oil have been disclosed in the prior art, the operating costs are generally high, or it is difficult to implement them industrially
Up to now, there is no report on the process method with strong industrial practicability, low operation cost and good deacidification effect

Method used

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  • Method for processing crude oil with high acid value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example illustrates: the deacidification effect of the method provided by the present invention.

[0026] On a small fixed fluidized bed device, experiments were carried out using Sudan high-acid crude oil A (see Table 1 for physical and chemical properties) and MLC-500 catalyst (commercial brand, industrially produced by Qilu Petrochemical Company Catalyst Factory). MLC-500 catalyst is a balancer taken from an industrial device, its microreaction activity is 62, and its Ni content is 15000μg.g -1 , V content is 6500μg.g -1 , and other physical and chemical properties are shown in Table 2. The deacidification effect under the conditions of different temperature, agent-oil ratio and space velocity was investigated through experiments, and the experimental results are shown in Table 3-5.

[0027] The calculation method of deacidification rate is as follows: deacidification rate=(total acid value of high-acid crude oil raw material-total acid value of obtained liqui...

Embodiment 2

[0039] This embodiment illustrates: the deacidification effect and product distribution of the method provided by the present invention.

[0040] On a small fixed fluidized bed device, the same high-acid crude oil and catalyst as in Example 1 were used for the experiment. The deacidification effect and product distribution were investigated through experiments, and the experimental results are shown in Table 5.

[0041] Table 6

[0042] Process conditions

Embodiment 3

[0044] On the multi-functional catalytic cracking medium-sized unit (the treatment capacity of this unit is 4kg / hr), high-acid crude oil B (see Table 7 for physical and chemical property parameters) and DVR-2 catalyst (trade name, industrial production of catalyst factory of Qilu Petrochemical Company, physical and chemical The properties are shown in Table 8) for experiments. The deacidification effect, product distribution and main properties of high-acid crude oil were investigated through experiments. The experimental results are shown in Table 9.

[0045] Table 7

[0046] Density(2O℃) / g·cm -3

0.9224

Kinematic viscosity(8O℃) / mm 2 ·s -1

2O.38

Carbon residue / m%

5.67

Acid value / mgKOH·g -1

3.28

Colloid / m%

16.7

Asphaltenes / m%

0.1

Wax content / m%

4.2

Metal content / μg·g -1

nickel

25.3

Vanadium

0.6

O-350℃ Yield / %

...

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Abstract

A method for producing highly acid value crude oil consists of preheating the crude oil which is total acid number of more than 0.5mg potassium hydroxide per gram after the pretreatment and injecting them into the fluidized catalytic cracker to contact the catalyst, and reacting in catalytically cracked reaction condition, separating the oil gas and the catalyst, in which the oil gas is put into the subsequent separation system, while the catalyst can be circularly used after stripping and regenerating. The method is characterized in that it is of strong industrial practicability, low running cost and fine deacidification effect and so on.

Description

technical field [0001] The invention belongs to the processing method of high acid value crude oil, more specifically, it is a method for processing high acid value crude oil by using fluid catalytic cracking process. Background technique [0002] It is generally believed that when the total acid value in crude oil is greater than 1mgKOH / g, the crude oil is called high acid value crude oil. In addition to high acid value, high acid value crude oil also has the following characteristics: 1) The density of high acid value crude oil is generally greater than 0.86g cm -3 , belongs to medium-heavy crude oil, and the higher the acid value of crude oil, the greater the density; 2) The viscosity of high-acid crude oil is high, and the higher the acid value, the greater the viscosity; 3) The carbon residue of high-acid crude oil is high, basically all More than 6% by weight; 4) the content of metals such as nickel and vanadium is relatively high, and the content of Ni+V is basically...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/18
Inventor 田松柏傅晓钦汪燮卿侯栓弟龙军张久顺许友好
Owner CHINA PETROLEUM & CHEM CORP
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