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Method for processing acid-containing hydrocarbon oils

A hydrocarbon oil and high-acid technology, which is applied in the direction of refining to remove heteroatoms, etc., can solve the problems of difficulty in ensuring long-term operation, serious fouling on the top of the reactor, and easy blockage of the catalyst channel, so as to reduce the problem of orifice blockage and reduce Small processing cost, avoid the effect of plugging holes

Active Publication Date: 2008-08-13
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst used in this method is a conventional large-pore residue hydrotreating catalyst, which is directly used for hydrodeacidification under low temperature and moderate conditions, and the deacidification effect is relatively poor.
Moreover, for high-acid crude oil with high impurities such as Ca, Fe, and heavy metals, if a hydrogenation catalyst with a pore size of 10-20 nm is directly used for hydrogenation treatment, it is still easy to block the catalyst pores, resulting in serious fouling at the top of the reactor. , the pressure drop rises rapidly and it is difficult to ensure long-term operation

Method used

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  • Method for processing acid-containing hydrocarbon oils

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Experimental program
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Effect test

Embodiment 1～5

[0032] The low-acid raw material and the high-acid raw material are heated to the required temperature and then mixed into the fixed-bed hydrogenation reactor. In the presence of hydrogen, they are contacted with a hydrogenation catalyst for hydrogenation treatment. The raw material properties are shown in Table 1, the hydrogenation catalyst used is shown in Table 2 and Table 3, the operating conditions used in the examples are shown in Table 4, and the reaction results are shown in Table 5.

[0033] Table 1 Properties of Raw Materials

[0034]

[0035] The nature of the large-pore hydrogenation protection catalyst used in the embodiment of table 2

[0036] Catalyst A

Catalyst B

metal composition

CoO, wt%

1.0

-

NiO, wt%

3.0

2.5

MoO 3 , wt%

2.0

5.0

WO 3 , wt%

-

0.5

nature

Specific surface, m 2 / g

136

150

Pore ​​volume, ml / g

0....

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Abstract

The invention discloses a hydrogenation method for acidiferous monolene. The method is that low-acid raw materials are preheated to 350 DEG C to 450 DEG C, and high-acid raw materials are preheated to 200 DEG C to 270 DEG C, then puts them into fixed-bed hydrogenation reactor and conducts hydrogenation, therefore prolapses naphthenic acid of the raw materials and also removing a part of impurity which is in mixed feedstock, such as metal, sulphur and so on. In the method of the invention, the high-acid raw material which preheating temperature is under 270 DEG C mixes with the high temperature low-acid raw material, then the corrosion of the high-acid raw material for heating equipment and pipeline is decreased, meanwhile reaction temperature of the high-acid raw material in the hydrogenation reactor is achieved and processes hydrogenation deacidification, therefore, acid corrosion problem for follow-up oil refining equipment can be avoided.

Description

technical field [0001] The invention relates to a processing method for acid-containing hydrocarbon oil, in particular to a hydrotreating method for acid-containing crude oil. Background technique [0002] Petroleum usually contains acid compounds, mainly in the form of naphthenic acid. The concentration or amount of acid in petroleum is expressed using the total acid number. The total acid number (TAN) refers to the number of milligrams of potassium hydroxide (KOH) required to neutralize all acidic components of 1 gram of crude oil or petroleum fractions, and the unit is mg KOH / g. [0003] In the process of petroleum refining, naphthenic acid in petroleum can directly react with iron, causing corrosion of refining equipment such as heating furnace tubes; it can also react with the protective film FeS on refining equipment, exposing new surfaces of metal equipment, subject to new corrosion. At present, ordinary refining equipment can only process acid-containing hydrocarb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/02C10G45/04
Inventor 刘铁斌耿新国李洪广吴锐蒋立敬胡长禄韩照明彭派吴长安
Owner CHINA PETROLEUM & CHEM CORP
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