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Method for combined processing of catalytic cracking oil slurry

A catalytic cracking oil slurry and combined processing technology, which is applied in the petroleum industry, hydrotreating process, hydrocarbon oil treatment, etc. The effect of increasing the yield, good effect and high mass transfer efficiency

Active Publication Date: 2019-08-06
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a catalytic cracking system for overcoming the defects of unclean removal of solid powder catalyst in oil slurry and low comprehensive utilization rate of high value-added oil slurry resources in the existing technology of catalytic cracking oil slurry processing and utilization technology. Combined processing method of oil slurry

Method used

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  • Method for combined processing of catalytic cracking oil slurry
  • Method for combined processing of catalytic cracking oil slurry
  • Method for combined processing of catalytic cracking oil slurry

Examples

Experimental program
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Effect test

Embodiment approach

[0048] According to a preferred embodiment of the present invention, the diluted oil slurry is preheated and then mixed with water. Preheating the diluted oil slurry can further dissolve the oil slurry in the diluent completely, thereby improving the contact desolidification effect of the diluted oil slurry with water. The preheating temperature is preferably 50-150°C, preferably 60-100°C.

[0049] In the present invention, the fiber filaments have good hydrophilicity, and can simultaneously capture the amphoteric surface activity and the wraps formed by the catalyst powder and water, thereby fully realizing the desolidification of the catalytic cracking oil slurry.

[0050] Specifically, the amphoteric surfactant of the present invention has both positive and negative charges, and has an isoelectric point. When the amphoteric surfactant is dispersed on the fiber with water, the electrons in the oil phase are rich in colloids and asphalt. The substance is not easy to accumulate on...

Embodiment 1

[0085] (1) Combine 1# catalytic cracking oil slurry (composition as shown in Table 1), sodium lauryl iminodipropionate and diluent (volume ratio of normal pressure diesel to ethyl acetate is 5:1, density is 0.86g / cm 3 ) After mixing and diluting at a mass ratio of 1:0.0001:1.5, preheat to 100°C. The fiber filament in the mass transfer space cylinder of the fiber liquid membrane contactor is 316 series stainless steel wire (a diameter of 0.05mm), the length to diameter ratio of the mass transfer space of the cylinder is 60:1, and the filling rate of the cylinder is 5 Volume %, the volume of the fiber liquid membrane contactor is 0.3L. The volumetric space velocity of the preheated and diluted oil slurry is 20h according to the liquid hour -1 The fiber liquid membrane contactor was injected, and 10% by weight (relative to the diluted oil slurry) was injected into the fiber liquid membrane contactor; the contact temperature in the fiber liquid membrane contactor was 130°C and the c...

Embodiment 2

[0110] (1) Combine 2# catalytic cracking oil slurry (composition shown in Table 7), lauryl betaine and diluent (volume ratio of coker diesel oil to ethyl laurate is 10:1, density is 0.862g / cm 3 ) After mixing and diluting at a mass ratio of 1:0.0003:0.5, preheat to 50°C. The fiber filament in the mass transfer space cylinder of the fiber liquid film contactor is 316 series stainless steel wire (a diameter of 0.05mm), the length to diameter ratio of the mass transfer space of the cylinder is 10:1, and the filling rate of the cylinder is 30 Volume %, the volume of the fiber liquid membrane contactor is 0.3L. The volumetric space velocity of the preheated and diluted oil slurry is 10h according to the liquid hour -1 The fiber liquid membrane contactor was injected, and 10% by weight (relative to the diluted oil slurry) was injected into the fiber liquid membrane contactor; the contact temperature in the fiber liquid membrane contactor was 150°C, and the contact pressure was 1.8 MPa...

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Abstract

The invention relates to the field of catalytic cracking oil slurry treatment, and discloses a method for combined processing of a catalytic cracking oil slurry. The method comprises: (1) mixing a catalytic cracking oil slurry, an amphoteric surfactant and a diluent, and making the obtained diluted oil slurry contact water in a fiber liquid membrane contactor, wherein the fiber liquid membrane contactor comprises a mass transfer space filled with fiber filaments; (2) carrying out oil-water-solid three-phase separation on the material obtained in the step (1); (3) making the oil phase obtainedin the step (2) contact hydrogen, and carrying out hydrotreating; and (4) extracting and distilling the hydrogenated product obtained in the step (3), and doping the heavy oil distillate obtained by the distilling into a hydrocracking raw material, a catalytic cracking raw material and a delayed coking raw material. With the method of the present invention, the solid powder in the catalytic cracking oil slurry can be continuously and efficiently removed so as to improve the yields of liquefied gas, gasoline, diesel oil and other light oils and improve the resource utilization rate of catalyticcracking oil slurries.

Description

Technical field [0001] The invention relates to the field of catalytic cracking oil slurry processing, in particular to a method for combined processing of catalytic cracking oil slurry. Background technique [0002] According to statistics, in 2016, the national crude oil processing capacity was about 530 million t / a, of which the total processing capacity of the catalytic cracking unit was about 150 million t / a, and the amount of slurry from the FCC unit in my country accounted for about 5% of the FCC unit processing capacity -10%, the output of catalytic cracking oil slurry has now reached more than 7.5Mt / a. Under the background of increasingly heavy and degraded catalytic raw materials, the output of oil slurry will inevitably increase. In order to improve the yield of light oil, my country's catalytic cracking units mostly use slurry refining operations. The heaviness of raw materials brings many adverse effects to catalytic cracking, especially coking and fouling make the ...

Claims

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Application Information

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IPC IPC(8): C10G69/00
CPCC10G69/00
Inventor 李华蒋文军佘喜春贺晓军陈庆岭曾志煜曾文广谢清峰罗雄威谢琼玉
Owner CHINA PETROLEUM & CHEM CORP
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