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Hydrotreating method of high-acid and high-calcium crude oil

A technology for hydrogenation of residual oil and crude oil, applied in refining to remove heteroatoms, etc., can solve problems such as low metal content, achieve low hydrogen consumption, reduce hydrogen costs, and ensure long-term safe operation.

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above existing technologies can effectively remove acidic substances in crude oil, but all of them are processed with low metal content, especially crude oil with low iron and calcium content

Method used

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  • Hydrotreating method of high-acid and high-calcium crude oil

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Experimental program
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Effect test

Embodiment 1

[0038] High-acid high-calcium crude oil and hydrogen are contacted with upflow hydrotreating catalyst RUF-1 in the crude oil hydrogenation reaction zone to carry out hydrotreating reaction, and the reaction products are cooled and separated to obtain hydrogen-rich gas and liquid products. The hydrogen-rich gas is recycled back to the upflow reactor, and the main properties of the obtained hydrogenated crude oil are shown in Table 3. The hydrogenated crude oil enters the atmospheric tower and is fractionated to obtain naphtha, diesel oil and atmospheric residue. The properties of the atmospheric residue are shown in Table 4. The atmospheric residue then enters the residue hydrogenation reaction zone and contacts with RG-10A, RG-10B, RDM-2 and RMS-1 in sequence. The properties of the hydrogenated oil are also listed in Table 4.

[0039] It can be seen from 3 that at a hydrogen partial pressure of 3.0MPa, a reaction temperature of 350°C, and a hydrogen-oil volume ratio of 200Nm ...

Embodiment 2

[0043] High-acid high-calcium crude oil and hydrogen are contacted with upflow hydrotreating catalyst RUF-1 in the crude oil hydrogenation reaction zone to carry out hydrotreating reaction, and the reaction products are cooled and separated to obtain hydrogen-rich gas and liquid products. The hydrogen-rich gas is recycled back to the upflow reactor, and the main properties of the obtained hydrogenated crude oil are shown in Table 3. The hydrogenated crude oil enters the atmospheric tower and is fractionated to obtain naphtha, diesel oil and atmospheric residue. The properties of the atmospheric residue are shown in Table 4. The atmospheric residue then enters the residue hydrogenation reaction zone and contacts with RG-10A, RG-10B, RDM-2 and RMS-1 in sequence. The properties of the hydrogenated oil are also listed in Table 4.

[0044] It can be seen from 3 that at a hydrogen partial pressure of 5.0MPa, a reaction temperature of 350°C, and a hydrogen-oil volume ratio of 200Nm ...

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Abstract

The invention relates to a hydrotreating method of high-acid and high-calcium crude oil. The high-acid and high-calcium crude oil carries out hydrogenation reaction in a crude oil hydrogenation reaction area; obtained hydrogenation crude oil enters a normal-pressure tower and is fractionated to obtain normal-pressure naphtha, normal-pressure diesel and normal-pressure residue oil, wherein the normal-pressure residue oil and hydrogen gas enter a residue oil hydrogenation reaction area together to carry out the hydrogenation reaction; and reaction products are separated to obtain hydrogenationnaphtha, hydrogenation diesel and hydrogenation residue oil, wherein the hydrogenation residue oil is qualified catalytic cracking feeds. Through the method, after the high-acid and high-calcium crude oil is in hydrotreatment in the crude oil hydrogenation reaction area, acid materials and calcium in the crude oil can be efficiently removed, and therefore, corrosion of the acid materials to the normal-pressure tower can be avoided, and increase of pressure drop of a residue oil hydrogenation catalyst bed caused by calcium deposition can be avoided, and long-period safety operation of the normal-pressure tower and a residue oil hydrogenation reactor can be ensured.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a method for hydrogenation treatment of high-acid and high-calcium crude oil. Background technique [0002] Acidic components in crude oil generally refer to naphthenic acid, other carboxylic acids, inorganic acids, phenols, mercaptans, etc., among which naphthenic acid and other organic acids can be collectively referred to as petroleum acid. Naphthenic acid accounts for more than 85% of the petroleum acid content, so it is customary to refer to petroleum acid as naphthenic acid in general. The acid value of crude oil reflects the amount of acidic components in crude oil. When the acid value of crude oil is greater than 0.5mgKOH / g, it can cause equipment corrosion, so the crude oil with acid value greater than 0.5mgKOH / g is usually called sour crude oil. At present, the output of sour crude oil in the world crude oil market accounts for abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/02
Inventor 刘涛牛传峰戴立顺邵志才杨清河胡大为孟勇新李大东
Owner CHINA PETROLEUM & CHEM CORP
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