Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydrotreating method of heavy oil

A technology for hydrotreating and oil products, which is applied in the fields of hydrotreating process, hydrocarbon oil, petroleum industry, etc. It can solve the problems of hot spots in reactors, easy deactivation of hydrotreating catalysts, and operation cycle of hydrotreating reaction devices. Short and other problems, to achieve the effect of increasing the operation cycle

Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, because there are many impurities in the heavy oil, the hydrotreating catalyst is very easy to deactivate, especially the hydrotreating catalyst in the first hydrogenation reactor, and, when the pressure drop in the first hydrogenation reactor reaches or close to the upper limit of the theoretical pressure drop, hot spots are likely to appear in the reactor, and the device can only be forced to shut down at this time, which makes the operation period of the heavy oil hydrotreating reaction device shorter

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
  • Hydrotreating method of heavy oil
  • Hydrotreating method of heavy oil

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of the macroporous hydrotreating catalyst (CAT-A) may include: mixing macroporous pseudo-boehmite dry rubber powder with polyvinyl alcohol, adding corn oil and aqueous solution for kneading, and mixing the obtained plastic body Carriers are obtained after shaping, drying and calcining. The catalyst can be prepared by loading the active metal components on the carrier by means of saturated impregnation. The macroporous pseudoboehmite dry rubber powder is commercially available.

[0033] The method of the present invention can adopt reactors of different structures, preferably a fixed-bed reactor.

[0034] In the present invention, there is no special limitation on the flow direction of raw materials in the hydrotreating zone, and each hydrogenation reactor can be either an upflow reactor or a downflow reactor.

[0035] According to the present invention, the hydrotreating reaction conditions may be conventional hydrotreating reaction conditions i...

Embodiment 1

[0059] use figure 1 With the equipment and process flow shown, valve 01 and valve 02 are opened, so that the residue raw material M with high asphaltene content (the main properties are listed in Table 1) and hydrogen enter reactor a, and then enter reactor b, c, and d in sequence and e reactor for hydrotreating, wherein, the catalysts in a reactor are: RG-10A, RG-10B and CAT-A-1 from top to bottom, and the ratio of the loading volume of each catalyst is 10:10:80 ;Hydroprocessing conditions include: reaction pressure 14.7MPa, hydrogen-to-oil volume ratio 600, liquid hourly volume space velocity 0.216h -1 , the reaction temperature of reactor a is 395°C, and the reaction temperature of reactors b, c, d and e is 385°C.

[0060] In the initial stage of stable operation, the properties of the product P1-1 obtained by hydrotreating residual oil include: a sulfur content of 0.30% by weight, a nitrogen content of 0.17% by weight, a residual carbon value of 5.5% by weight, and a heav...

Embodiment 2

[0070] use figure 1 With the equipment and process flow shown, valve 01 and valve 02 are opened, so that the residue raw material M with high asphaltene content and hydrogen enter reactor a, and then enter reactor b, c, d and e in sequence for hydrogenation, Hydrotreating conditions include: reaction pressure 13.2MPa, hydrogen to oil volume ratio 1500, liquid hourly volume space velocity 0.142h -1 , the reaction temperature of reactor a is 400°C, and the reaction temperature of reactors b, c, d and e is 360°C.

[0071] Wherein, according to the type and the volume of the catalyst loaded in the reactor a, b, c, d and e in embodiment 1, each reactor of the present embodiment is packed, and the difference is that the catalyst in the reactor a is from top to bottom: : RG-10A, RG-10B and CAT-A-2, the ratio of each catalyst loading volume is 15:15:70.

[0072] At the initial stage of stable operation, the properties of the product P2-1 obtained after the hydrotreating of residual ...

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
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a hydrotreating method of heavy oil. The method comprises the steps of introducing the heavy oil and hydrogen successively into a plurality of hydrogenation reactors connected in series under a hydrotreating reaction condition, and contacting with a plurality of hydrogenation catalyst bed layers of the hydrogenation reactors, wherein the hydrogenation reactors comprise a first hydrogenation reactor, a second hydrogenation reactor and subsequent hydrogenation reactors which are behind the second hydrogenation reactor according to a flow direction of the heavy oil, and when a pressure drop in the first hydrogenation reactor reaches an upper limit of the pressure drop or hot spots appear in the reactor, the heavy oil and the hydrogen are directly introduced into the second hydrogenation reactor and flow through the second hydrogenation reactor and the subsequent hydrogenation reactors to carry out hydrotreatment. Compared with a conventional method, the method provided by the invention can take full use of activities of all the catalysts and prolongs a running period of a residual oil hydrogenation apparatus.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of heavy oil products. Background technique [0002] As the crude oil becomes heavier, the variety of crude oil is increasing, and the requirements for lighter oil products are getting higher and higher, the importance of this process is becoming more and more obvious, and it has a good application prospect. [0003] "Heavy oil" means hydrocarbons with high asphaltenes content derived from topped crude oil, petroleum residues, oil sands, bitumen, shale oil, liquefied coal, or recycled oil. Heavy oils often contain various contaminants , such as carbon residues, sulfur, nitrogen, and metals. Generally, in the reactor sequence for processing heavy oil products, hydrodemetallization agent, hydrodemetallization desulfurization agent, hydrodesulfurization agent, hydrodenitrogenation agent, and hydrodecarbonization agent are filled in order to remove heavy oil Metals, sulfur, nitrogen and residu...

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 Patents(China)
IPC IPC(8): C10G65/02C10G65/12
Inventor 邵志才孙淑玲戴立顺牛传峰刘涛杨清河董凯
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com