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

A liquid-phase hydrogenation system and liquid-phase hydrogenation method

A liquid-phase hydrogenation and hydrogenation reaction technology, which is applied in the fields of hydrogenation treatment process, chemical instruments and methods, and hydrocarbon oil treatment, can solve the problems of hydrogen waste, high cost, and difficulty in deep hydrogenation

Active Publication Date: 2021-08-31
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, on the one hand, the combined use of the reaction system, circulation system and heating furnace system makes the reaction process very complicated, costly and difficult to operate; on the other hand, a large amount of circulating materials are introduced, which increases the total volume of the reactor; The sub-ordinary method of hydrogen dissolution and mixing cannot realize the stable dissolution and dispersion of hydrogen, and causes a lot of waste of hydrogen, which reduces the utilization rate of hydrogen; conventional fixed-bed reactors are difficult to achieve deep hydrogenation

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
  • A liquid-phase hydrogenation system and liquid-phase hydrogenation method
  • A liquid-phase hydrogenation system and liquid-phase hydrogenation method
  • A liquid-phase hydrogenation system and liquid-phase hydrogenation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The hydrogen dissolving equipment in the hydrogen dissolving zone and the tubular reactor in the high-efficiency hydrogenation reaction zone are adopted in the present invention, wherein the hydrogen dissolving equipment is the same as in comparative example 3, and the tubular reactor in the high-efficiency hydrogenation zone is the same as in comparative example 2.

[0066] The feed oil 1 (straight-run diesel) and feed oil 2 (catalyzed diesel) in Table 1 were respectively used as raw materials, and the reaction products were obtained after hydrogenation reaction. The reaction conditions and product properties are shown in Table 2.

Embodiment 2

[0068] Using the hydrogen dissolving equipment in the hydrogen dissolving zone of the present invention and the tubular reactor in the high-efficiency hydrogenation zone, first, the raw material oil and hydrogen are formed into a stable "gas-in-oil" mixed fluid by using the hydrogen dissolving equipment in the present invention, and the The fluid is introduced into the tubular reactor in the high-efficiency hydrogenation zone for liquid-phase hydrogenation reaction.

[0069] The preliminary hydrogen dissolving section in the hydrogen dissolving equipment in the hydrogen dissolving area adopts a cylindrical internal filling spiral plate spoiler assembly, the residence time is 5.0 minutes, and the low-pressure escaped hydrogen is recycled, and the flow rate is 0.015% of the raw material mass; the accelerated dissolving The contraction angle of the hydrogen section is 20°, and the length ratio of the accelerated hydrogen dissolution section to the hydrogen release section is 1:15;...

Embodiment 3

[0073] Using the hydrogen dissolving equipment in the hydrogen dissolving zone of the present invention and the tubular reactor in the high-efficiency hydrogenation zone, first, the raw material oil and hydrogen are formed into a stable "gas-in-oil" mixed fluid by using the hydrogen dissolving equipment in the present invention, and the The fluid is introduced into a conventional fixed-bed liquid-phase hydrogenation reactor for liquid-phase hydrogenation reaction.

[0074] The preliminary hydrogen dissolving section of the hydrogen dissolving equipment in the hydrogen dissolving area adopts a cylindrical interior filled with rotating vane spoiler components, and the residence time is 4.5 minutes. The contraction angle of the section is 20°, and the length ratio of the accelerated hydrogen dissolution section to the hydrogen release section is 1:8; the operating conditions of the introduction position of the hydrogen-rich gas-liquid mixture in the accelerated hydrogen dissolutio...

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
sizeaaaaaaaaaa
angleaaaaaaaaaa
aspect ratioaaaaaaaaaa
Login to View More

Abstract

The invention discloses a liquid-phase hydrogenation system and a liquid-phase hydrogenation method. The system includes a hydrogen-dissolving zone and a high-efficiency hydrogenation reaction zone. A number of hydrogen-dissolving equipment are arranged in the hydrogen-dissolving zone, and the hydrogen-dissolving equipment includes a hydrogen-dissolving The shell of the equipment, the shell of the hydrogen dissolving equipment contains several parallel hydrogen dissolving components; the high-efficiency hydrogenation reaction zone includes a plurality of series tubular reactors; the shape of the tubular reactor is "U-shaped", including straight The pipe section, the horizontal section where the bottom connects the straight pipe sections on both sides. The method of the present invention uses the "gas-in-oil" gas-liquid mixed fluid formed in the hydrogen dissolving zone as the feed material for the liquid-phase hydrogenation reaction, and enters the "U-shaped" tubular reactor in the high-efficiency hydrogenation reaction zone to undergo deep hydrogenation reaction , which can greatly reduce the supplementary hydrogen oil ratio in the hydrogenation reaction process, improve the utilization rate of hydrogen, reduce hydrogen consumption and energy consumption, and can continuously use the H produced in the reaction process 2 S, NH 3 Wait for the gas to move out of the reaction system, improve and maintain a high hydrogenation reaction rate and reaction efficiency, and realize deep hydrogenation reaction.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and specifically relates to a liquid-phase hydrogenation system and a liquid-phase hydrogenation method. Background technique [0002] Compared with the conventional trickle bed gas\liquid\solid three-phase hydrogenation process, the liquid phase hydrogenation technology has the advantages of simple process flow, saving investment, reducing production cost, and high reaction efficiency. In the conventional trickle bed hydrogenation reaction process, hydrogen is mainly used for mass transfer, that is, the speed at which hydrogen diffuses from the gas phase and dissolves into oil is the rate-controlling step of the entire hydrogenation reaction. The liquid-phase hydrogenation process eliminates the influence of hydrogen diffusion and mass transfer, so that the hydrogenation reaction is carried out in the kinetic control zone, that is, the hydrogen is dissolved in the raw material oil to meet t...

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): B01J8/06C10G65/06
CPCB01J8/06C10G65/06
Inventor 杨秀娜于淼阮宗琳王昊辰金平
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