Method and system for catalytic conversion of poor quality raw material oil

A catalytic conversion method and low-quality raw material oil technology are applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., and can solve the problem that the operating conditions of the hydrotreating unit are highly severe, fail to meet the specifications of commercial diesel, and affect the gasoline pool. Octane number level and other issues, to achieve the effect of increasing liquefied gas yield, reducing thermal cracking, improving raw material reaction conversion rate and target product selectivity

Active Publication Date: 2018-01-09
CHINA PETROLEUM & CHEM CORP +1
View PDF11 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems caused by direct catalytic cracking of inferior raw material oil include low yield of low-carbon olefins, high olefin content in gasoline, high density of diesel oil and low cetane number of diesel oil, etc. Therefore, gasoline and diesel oil cannot be used as commercial gasoline and diesel oil. The blending components, especially the obtained catalytic diesel oil, even if hydrofining is carried out, the cetane number will increase slightly, and it still cannot meet the specifications of commercial diesel oil
The problem of catalytic cracking after hydrogenation of low-quality feedstock is that the operating conditions of the hydrogenation unit are harsh and the investment in the unit is relatively high; secondly, the octane number of gasoline will decrease, which seriously affects the octane number level of the gasoline pool

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
  • Method and system for catalytic conversion of poor quality raw material oil

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0052] A specific embodiment, the method also includes: sending the second reaction product obtained in step b and the spent catalyst from the top outlet of the outlet section 7 to the settling section 8 for gas-solid separation, and the second reaction product obtained is sent to the settling section 8. The settling section 8 is sent to the product separation unit 18 to carry out the product separation described in step c, and the resulting raw catalyst is stripped by the stripping section 10 below the settling section 8 and then sent to the stripping section 10 and sent to the settling section 8. The regenerator 13 performs regeneration.

[0053] In order to facilitate the second reaction product and the spent catalyst from the outlet section 7 into the settling section 8, the settling section 8 and the stripping section 10 can be sleeved outside the middle and upper part of the riser reactor 2, The top outlet of the outlet section 7 may be located in the settling section 8 ...

Embodiment approach

[0064] A specific embodiment, the pre-lifting section is provided with a first regenerated catalyst inlet, the lower part of the reaction section 1 is provided with a low-quality raw material oil inlet, the middle and lower part of the outlet section 7 is provided with a high-quality raw material oil inlet, and the first The middle and lower part of a diameter-enlarging section II is provided with a semi-spent catalyst outlet, the middle and lower part of the second expanding section III is provided with a second regenerated catalyst inlet, and the top of the settling section 8 is provided with a reaction product outlet. The stripping section 10 is provided with a catalyst outlet to be produced, the reaction product outlet of the settling section 8 is in fluid communication with the raw material inlet of the product separation unit 18, and the diesel product outlet of the product separation unit 18 is connected with the aromatics extraction unit 24. The raw material inlet is in...

Embodiment

[0082] This example follows the attached figure 1 In this embodiment, vacuum residue is used as low-quality raw material oil, and hydrogenated raffinate oil is used as high-quality raw material oil. On the medium-sized device of the riser reactor (the height of the riser reactor 2 is 30 meters, the inner diameter of the pre-lift section is 0.8 meters, the height of the pre-lift section is 1.5 meters, the inner diameter of the reaction section I is 1 meter, and the inner diameter of the reaction section I is 1 meter. The height is 21 meters, the inner diameter of the first expanding section II is 3 meters, the height of the first expanding section II is 1.5 meters, the inner diameter of the reducing section is 1 meter, and the height is 1 meter, and the second expanding section III Inner diameter is 3 meters, and the height of the second enlarged diameter section III is 1.5 meters, and the inner diameter of outlet section 7 is 0.8 meters, and the height of outlet section 7 is 5...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
acid valueaaaaaaaaaa
heightaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method and a system for catalytic conversion of poor quality raw material oil. The method comprises: feeding poor quality raw material oil into a riser reactor, carrying outa catalytic conversion reaction, feeding the obtained reaction product into a product separation unit, separating, and carrying out aromatic hydrocarbon extraction on the obtained diesel oil, whereinthe partial regeneration catalyst is added to the second diameter expanding section after the partial semi-spent catalyst is taken out from the first diameter expanding section at the middle portion of the riser reactor. According to the present invention, with the method and the system, the poor quality raw material oil is converted into high octane number gasoline and propylene while the yieldsof dry gas and coke are greatly reduced so as to achieve the efficient utilization of petroleum resources.

Description

technical field [0001] The invention relates to a catalytic conversion method and system for inferior raw material oil. Background technique [0002] Low-carbon olefins represented by ethylene and propylene are the most basic raw materials in the chemical industry. Natural gas or light petroleum fractions are mostly used as raw materials at home and abroad, and low-carbon olefins are produced by steam cracking technology in ethylene complexes. During the production of ethylene, a large number of other basic raw materials such as olefins and aromatics are produced by-products, and the corresponding ethylene production must be linked with the production of various intermediate products and final products. In addition to the production of ethylene, about 70% of propylene, 90% of butadiene, and 30% of aromatics come from steam cracking by-products. Although the steam cracking technology has been developed for decades and the technology has been continuously improved, it still h...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/04C10G69/04
Inventor 魏晓丽张久顺龙军
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