High acid value hydrocarbon oil delayed coking method

A delayed coking method and high acid value hydrocarbon technology, which is applied in cracking, petroleum industry, non-catalytic thermal cracking, etc., can solve problems such as corrosion and fractionation tower corrosion, and achieve the effect of reducing corrosion and prolonging the coking start-up period

Active Publication Date: 2005-02-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the naphthenic acid and other acidic substances in the raw oil not only corrode the convection section of the heating furnace, but also corrode the lower part of the fractionation tower, the radiant feed pump and the radiant furnace tube, etc., and because the raw oil may contain light components, With the evaporation of

Method used

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  • High acid value hydrocarbon oil delayed coking method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1

[0035] The atmospheric residual oil with a total acid value of 6mgKOH / g is heated to 410°C in the convection section and the upper part of the radiant section of the heating furnace, and then enters the reactor for moderate thermal cracking reaction. The pressure in the reactor is 0.2MPa, and the residence time is 30min. Sampling and analysis of the stream going to the middle and lower part of the radiant section of the heating furnace shows that the total acid value is 0.6 mgKOH / g, and the total acid value of the light oil at the top of the reactor is 0.3 mgKOH / g.

Example Embodiment

[0036] Example 2

[0037] The vacuum residue with a total acid value of 4mgKOH / g is heated to 420°C in the convection section and the upper part of the radiant section of the heating furnace, and then enters the reactor for moderate thermal cracking reaction. The pressure in the reactor is 0.3MPa, and the residence time is 40min. Sampling and analysis of the stream going to the middle and lower part of the radiant section of the heating furnace shows that the total acid value is 0.5 mgKOH / g, and the total acid value of the light oil at the top of the reactor is 0.2 mgKOH / g.

Example Embodiment

[0038] Example 3

[0039] The crude oil with a total acid value of 12mgKOH / g was heated to 430°C through the convection section and the upper part of the radiant section of the heating furnace, and then entered the reactor for moderate thermal cracking reaction. The pressure in the reactor was 0.3MPa, and the residence time was 50min. The upper part of the reactor went to the heating furnace. The total acid value of the stream in the middle and lower part of the radiation section is 1.5 mgKOH / g, and the total acid value of the light oil at the top of the reactor is 0.6 mgKOH / g.

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Abstract

The invention is a kind of method of delaying peracid hydrocarbon oil's burning. The process follows this. first, lead the raw material to coking heater to warm-up at the convection section, at upside of the beamy, heat up to temperature of 350 to 450 degree. Second, put outcome into cracking case and distill cymogene hydrocarbon and gas which come out from the top of reactor. Third, heat up the weight crackate, which comes out from the top of reactor, at radiant section of furnace to the temperature of 480-510 degree. Forth burn the outcome in coke chamber and then distill the burned gas to gain coking gas, gasoline, diesel, petrolatum oil and circulation oil. The advantages of the invention is that, first, it can produce peracid base oil by delayed coke equipment. Second, it can delay the coke's canker by peracid base oil and prolong the burning cycle length.

Description

technical field [0001] The invention belongs to a method for non-catalytic thermal cracking of hydrocarbon oil in the absence of hydrogen, more specifically, a method for delayed coking of hydrocarbon oil with high acid value. Background technique [0002] The research on the corrosion and anticorrosion of petroleum acid to production and refining equipment shows that when the total acid value in petroleum exceeds 1mgKOH / g, the acid corrosion will be quite serious. The acid in petroleum is mainly naphthenic acid. When processing crude oil with high acid value, naphthenic acid reacts with iron in refining equipment, causing corrosion of towers, furnace tubes, heat exchangers, pumps and other equipment; naphthenic acid The acid can also react with the protective film FeS on the surface of the refining equipment, exposing the metal surface of the equipment and subject to new corrosion. Petroleum acid eventually causes damage to petroleum processing e...

Claims

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Application Information

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IPC IPC(8): C10G9/16
Inventor 王玉章申海平刘自宾
Owner CHINA PETROLEUM & CHEM CORP
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