Contact agent for efficiently processing low-quality heavy oil and use method of contact agent

A low-quality heavy oil and contact agent technology, which is applied in the direction of gasification process, hydrocarbon oil treatment, hydrocarbon oil cracking, etc., can solve the problems of high wax oil content, low yield of light oil, high yield of dry gas and coke, and achieve Easy to recycle, simple process, and the effect of reducing SOX emissions

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, due to the use of inactive coke particles as fluidized particles in fluidized coking or flexible coking, the raw oil only undergoes thermal cracking reactions, resulting in high yields of dry gas and coke in fluidized coking, low yields of light oil, and waxy oil. high content

Method used

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  • Contact agent for efficiently processing low-quality heavy oil and use method of contact agent
  • Contact agent for efficiently processing low-quality heavy oil and use method of contact agent
  • Contact agent for efficiently processing low-quality heavy oil and use method of contact agent

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Inferior residual oil and water are preheated at a mass ratio of 1:0.01 and then enter the contact cracking unit. The contact agent is a mixture containing 90% by weight of CRC-1 catalytic cracking catalyst and 10% by weight of MFC-2. The process conditions are: The reaction temperature is 490°C, the agent-to-oil ratio is 10, the water-to-oil ratio is 0.2, and the gas phase residence time is 2.0s. The distribution of the obtained products is shown in Table 2. The spent agent obtained after the contact cracking reaction enters the heater, exchanges heat with the contact agent and gasification gas from the gasifier, heats up to 650°C, and then enters the gasifier for oxygen-lean regeneration. The process conditions are: dense phase bed The temperature in the chamber is 730°C, the linear velocity in the dense-phase bed is 0.25m / s, the gas residence time is 30 seconds, the oxygen molar content in the gasification agent is 20%, and the water molar content is 80%. The composit...

Embodiment 2

[0051] Inferior residual oil and water are heated to 380°C through a heating furnace at a mass ratio of 1:0.08, and enter the contact cracking unit. The contact agent is a mixture containing 10% by weight of MFC-1 and 90% by weight of MFC-2. The process conditions are: Cracking temperature 530°C, space velocity 20h -1 , the agent-oil ratio is 7, the water-oil ratio is 0.25, the total pressure (gauge pressure) is 1.0MPa, the hydrogen partial pressure is 0.3MPa, and the hydrogen-oil ratio is 100m 3 / m 3 , the resulting product distribution is shown in Table 2. The spent agent obtained after the contact cracking reaction enters the heater, exchanges heat with the contact agent and gasification gas from the gasifier, and then enters the gasifier after heating up to 630°C. The process conditions are: the temperature in the dense-phase bed is 920 ℃, linear velocity in dense bed 0.33m / s, gas residence time 50 seconds, oxygen content 20%, CO 2 The molar content is 80%, and the comp...

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Abstract

The invention discloses a contact agent for efficiently processing low-quality heavy oil and a use method of the contact agent. The contact agent contains carbon-containing grains and an inorganic material, wherein the inorganic material has the pore volume greater than or equal to 0.10cm<3>/g, of pores greater than 10nm; and the mass percentage of the inorganic material in the contact agent is 5-95%. Under the action of the contact agent, the low-quality heavy oil is subjected to contact cracking reaction, and gases, gasoline, diesel oil, wax oil and an inactivated catalyst deposited with coke can be generated; the inactivated catalyst can be fed into a fluidized gasifier, carbon and a gasification agent on the carbon-containing contact agent are subjected to gasification reaction, gasified gases such as CO and H2 can be obtained, and sulfur in the gasified gas mainly exists in modes of H2S and COS. By adopting the use method, fluidization particles of the low-quality heavy oil in the fluidization machining process can be in very good particle size distribution, the problem of tail combustion in the gasification process is avoided, and the whole process is simple, environment-friendly and safe.

Description

technical field [0001] The invention relates to a contact agent, more specifically to a contact agent used in the processing of inferior heavy oil and its application method. Background technique [0002] The decarbonization processes of inferior heavy oil mainly include delayed coking, fluidized coking and flexible coking. Using fluidized processing of low-quality heavy oil can realize continuous and airtight process, and the whole process is relatively environment-friendly. [0003] At present, the fluidized processing methods of low-quality heavy oil that have been applied industrially are fluidized coking and flexible coking that use coke particles as fluidized particles. In the resid coking process using fluidized bed processing, the particle size of the fluidized coke is very important. If there are too many very fine particles (less than 50 microns in diameter), cohesion of these particles occurs and the fluidization properties of the fluidized bed are lost, and too...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00C10G47/00
CPCC10G11/00C10G47/00C10G2300/1044C10G2300/4006C10G2300/4012C10G2300/70C10G2400/26C10J3/485C10J3/84C10J2300/1603Y02P30/40
Inventor 王子军张书红申海平
Owner CHINA PETROLEUM & CHEM CORP
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