Processing method of heavy oil

A processing method and heavy oil technology, applied in the petroleum industry, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of large bed pressure drop, poor thermal conductivity, large agglomerates and fine coke powder, etc., to reduce emissions, reduce Effect of gasification temperature and process cost reduction

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
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Problems solved by technology

On the one hand, this process adopts high-temperature gasification, which requires high energy consumption. On the other hand, the CO and H in the produced gas 2 The content is relatively low, the calorific value is low, and its added value is also very low Fluid coking and flexible coking process
Both use the coke core as the fluidization medium, and at the same time as the carrier of coke and heat. There are problems such as uneven particle size distribution of coke particles, which are prone to large agglomerates and fin

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  • Processing method of heavy oil

Examples

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Example Embodiment

[0045] Example 1

[0046] The catalytic cracking catalyst with the brand name of CRC-1 and heavy oil with a carbon residue value of 15.10% by weight, a metal of 50μg / g, and a sulfur content of 1.12% (mass) undergo contact cracking reaction in the contact cracking unit, and the contact cracking reaction process The conditions are: cracking temperature 460℃, space velocity 10h -1 , The agent-oil ratio is 10, the water-oil ratio is 0.1, and the coke content of the obtained spent agent is 1.8% by weight.

[0047] The spent reagent is stripped with steam for 30 minutes, and the stripped spent reagent is mixed with the regenerated contact agent from the regenerator to exchange heat. The temperature of the spent reagent reaches 610℃, and the oxygen is 15% in mole fraction. , 85% of water gasification agent, gasification reaction occurs, the target product CO+H 2 The volume fraction (dry basis) is 71.5%.

[0048] The target product CO+H obtained by the gasification unit 2 Introduce the conv...

Example Embodiment

[0049] Example 2

[0050] The catalytic cracking catalyst with the brand name of CRC-1 and the gasification catalyst GC-1 were mechanically mixed, the mass ratio of the two was 9:1, and then the carbon residue value was 18.10% by weight, the metal was 200μg / g, and the sulfur content was 1.12% (mass) of heavy oil undergoes a contact cracking reaction in the contact cracking unit. The process conditions of the contact cracking reaction are: cracking temperature 500℃, space velocity 20h -1 , The agent-oil ratio is 7, the water-oil ratio is 0.2, and the coke content of the obtained spent agent is 2.5% by weight.

[0051] Strip the spent reagent with steam for 30 minutes. The stripped spent reagent is mixed with the regenerated contact agent from the regenerator to exchange heat. The temperature of the spent reagent reaches 700℃, and oxygen 10% based on mole fraction is introduced. , Water 80%, part of CO from the conversion unit 2 10% gasification agent, gasification reaction occurs, a...

Example Embodiment

[0053] Example 3

[0054] The silicon-aluminum material MFC-1 and heavy oil with a carbon residue value of 35.0% by weight, a metal 425μg / g and a sulfur content of 3.12% (mass) undergo a contact cracking reaction in a contact cracking unit. The process conditions of the contact cracking reaction are: cracking temperature 520℃, airspeed 50h -1 , The agent-oil ratio is 20, the water-oil ratio is 0.5, and the coke content of the obtained spent agent is 2.8% by weight.

[0055] Strip the spent reagent with steam for 30 minutes. The stripped spent reagent is mixed with the regenerated contact agent from the regenerator to exchange heat. The temperature of the spent reagent reaches 800℃, and the oxygen is 5% in mole fraction. , Water 95% gasification agent, gasification reaction occurs, the target product CO+H 2 The volume fraction (dry basis) is 83.5%.

[0056] The target product CO+H obtained by the gasification unit 2 Introduce the conversion unit, the product is separated into hydroge...

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Abstract

A processing method of heavy oil comprises the following steps: carrying out a contact cracking treatment on inferior heavy oil, making cokes deposited on a contact agent carry out a gasification reaction at a low temperature in a gasification unit to convert the cokes into gasified gas which is rich in carbon monoxide and hydrogen gas, transporting the gasified gas rich in carbon monoxide and hydrogen gas into a converting unit to generate hydrogen gas and CO2, separating the hydrogen gas and CO2, and transporting CO2 to a dry reforming unit to carry out reaction with gas rich in methane in the presence of a regeneration contact agent so as to generate CO and hydrogen gas; wherein the contact agent can be recycled and returned to the contact cracking reactor after the contact agent has exerted a catalyzing function and then is discharged out from the dry reforming reactor. The processing method reasonably utilizes residues and metals of heavy oil processing to produce products with a high economic value, and is economic and environment-friendly.

Description

technical field [0001] The invention belongs to a method for processing inferior heavy oil. More specifically, it is a combined processing method that combines heavy oil contact cracking with gasification regeneration and gas dry reforming. Background technique [0002] The heavy and inferior quality of crude oil in the world is becoming more and more obvious. In the future, the objects of refining and processing will gradually shift to heavy oil or sour crude oil, and the processing process will become more and more difficult. The heaviness and inferiority of crude oil are mainly reflected in the aspects of high density, high carbon residue, high sulfur content, high colloid and asphaltene content, and high heavy metal nickel and vanadium content. 15%. Processing heavy oil can be divided into catalytic processing and non-catalytic processing. Catalytic processing technology includes heavy oil catalytic cracking, heavy oil hydrogenation and other processes. Non-catalytic...

Claims

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Application Information

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IPC IPC(8): C10G11/05C10J3/46C01B3/12C01B3/44C01B3/40
Inventor 张书红王子军申海平吴治国李延军李子锋汪燮卿
Owner CHINA PETROLEUM & CHEM CORP
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