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
View PDF8 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 fine coke powder, which affect the fluidization effect.
However, the catalytic reactor filled with the loaded granular catalyst is generally a fixed-bed reactor. In general, the bed pressure drop is large, there is a large temperature gradient between the beds, and the thermal conductivity is poor, and the thermal resistance is large. It is very easy to cause local overheating of the catalyst bed, so that the active component Ni is easier to sinter during the reaction process, and the activity of the catalyst decreases rapidly

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Processing method of heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0048] The target product CO+H obtained from the gasif...

Embodiment 2

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

[0051] The spent agent is stripped with steam for 30 minutes, and the stripped spent agent is mixed with the regenerated contact agent from the regenerator to exchange heat. The temperature of the spent agent reaches 700°C, and the oxygen 10% is introduced in terms of mole fraction. , water 80%, part of CO from the conversion unit 2 10% gasification agent, gasification reaction occurs, and t...

Embodiment 3

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

[0055] The spent agent was stripped with water steam for 30 minutes, and the stripped spent agent was mixed with the regenerated contact agent from the regenerator to exchange heat. The temperature of the spent agent reached 800°C, and 5% oxygen was introduced in terms of mole fraction. , water 95% gasification agent, gasification reaction occurs, and the target product CO+H is obtained 2 The volume fraction (dry basis) is 83.5%.

[0056] The target product CO+H obtained from the gasification unit 2 The...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap