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Vacuum residue processing method

A vacuum residue and wax oil technology, applied in the field of petroleum refining, can solve the problems of heavy oil, high coke yield, product distribution inferior to wax oil catalytic cracking, etc.

Inactive Publication Date: 2010-12-29
涿州贝尔森生化科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty of cracking vacuum residue oil, its product distribution is not as good as that of wax oil catalytic cracking. Compared with wax oil catalytic cracking, the residue catalytic cracking has a lower yield, higher coke yield, and more heavy oil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2

[0026] Using Shengli crude oil as raw material, the vacuum residue is fed into the delayed coking unit. The coking process conditions are: the circulation ratio is 0, the furnace outlet temperature is 500°C, and the coke tower top pressure is 0.16MPa to obtain dry gas, liquefied petroleum gas, gasoline, and diesel oil. , Wax oil, coke products. Blend straight-run wax oil with 25% vacuum residue into the catalytic cracking unit. The catalytic cracking process conditions are: reaction temperature 500°C, reaction pressure 0.1373MPa, agent-to-oil ratio 5, to obtain dry gas, liquefied gas, gasoline, diesel, Oil slurry, coke products. The percentage distribution of each product of catalytic cracking is as follows Figure 4 shown. Blend straight-run wax oil with 16% coker wax oil into the catalytic cracking unit. The catalytic cracking process conditions are: reaction temperature 500°C, reaction pressure 0.1373MPa, agent-to-oil ratio 5, to obtain dry gas, liquefied gas, gasoline, d...

example 4

[0034] The catalytic cracking catalyst used in the test was collected from the upper balancer of the heavy catalyst unit of Wuhan Branch; the coker wax oil was also collected from the coking unit of Wuhan Branch and refined; the raw material of the coking unit came from the decompression of 15% Cabinda oil blended with mixed crude oil in Yizheng residual oil. Straight-run wax oil comes from the atmospheric and vacuum unit in Yizheng where mixed crude oil is blended with 15% Cabinda oil. The experimental device used in the catalytic cracking medium-scale reaction test is the XTL-5 type high and low parallel riser catalytic cracking test device, manufactured by the Refining Research Institute of Sinopec Luoyang Petrochemical Engineering Company. Considering that it is impossible for industrial catalytic cracking units to use coker gas oil alone as the raw material for catalytic cracking, the ratio of normal bottom heavy oil for oil transportation in Yizheng pipeline is generally...

example 5

[0039] The coking reaction test equipment is a tubular coking test device, and the coking reaction tube is equivalent to the heating furnace and coke tower of the factory. Under the condition of normal pressure, the temperature of the constant reaction tube is divided into upper, middle and lower sections, and the reaction temperature is set according to the needs of the test. The positive and negative deviation of the temperature of each reaction point is less than 3°C. The constant feed rate was 200mL / h, and the feed time was 2.5h. After the feed was stopped, the reaction temperature was maintained and nitrogen was purged for 0.5h.

[0040] The coking reaction of fresh raw materials (0 circulation ratio) at different reaction temperatures of the test device, the test results are shown in Table 5-1.

[0041] Table 5-1 Yield of coking reaction products at different reaction temperatures

[0042]

[0043] It can be seen from Table 5-1 that the coking reaction temperature de...

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Abstract

The invention relates to a processing method, which comprises the following steps of: coking vacuum residue serving as a raw material, denitrifying and refining coker gatch and performing catalytic cracking. The combination process improves coking processing capability, improves the yield of the coker gatch, reduces the yield of coke and improves liquid yield by reducing delayed coking recycle ratio of the vacuum residue, reaction temperature and tower top pressure, and improves the catalytic cracking property of the coker gatch by removing nitride from the coker gatch; the increased coker gatch is used as the catalytic cracking raw material instead of heavy oil; the vacuum residue does not enter a catalytic cracking device; and the total light oil yield is improved.

Description

technical field [0001] The invention relates to a combination process for processing vacuum residue oil, especially a processing method that uses vacuum residue oil as a raw material, undergoes coking of vacuum residue oil, denitrification and refining of coked wax oil, and then carries out catalytic cracking. The invention belongs to Petroleum refining field. Background technique [0002] Heavy oil deep processing technology is the focus of the development of the world's oil refining industry today, and the technology to increase the conversion depth of heavy oil and increase the production of light oil products still mainly relies on coking, residual oil catalytic cracking and residual oil hydrotreating, among which coking is inferior The primary means of conversion of heavy oil (especially residual oil). The goal of innovation and development of delayed coking process technology is to improve the processing capacity of the unit, increase the yield of liquid products, red...

Claims

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Application Information

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IPC IPC(8): C10G55/06
Inventor 沈喜洲许乐新
Owner 涿州贝尔森生化科技发展有限公司
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