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

Method for operating gasoline hydro-upgrading catalyst comprising molecular sieves

A gasoline hydrogenation and hydrogenation upgrading technology, applied in the petroleum industry, refined hydrocarbon oil and other directions, can solve the problems of inability to use passivation, difficult to ensure the stability of catalyst activity, improve the activity stability and avoid the loss of catalyst activity , the effect of stable start-up

Active Publication Date: 2016-11-23
PETROCHINA CO LTD
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The passivation process in CN201110321354.2 and CN201210432673.5 is a reversible process, it is difficult to ensure the activity stability of the catalyst, and both use heavy oil products with an initial boiling point greater than 200 ° C as the passivation oil, so they cannot be used for final Passivation of lower gasoline fractions

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 for operating gasoline hydro-upgrading catalyst comprising molecular sieves
  • Method for operating gasoline hydro-upgrading catalyst comprising molecular sieves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Fill 500ml gasoline hydrogenation upgrading catalyst A in a 500ml adiabatic bed hydrogenation reactor, and contact with hydrogen and naphtha for 40 hours for activation treatment. The activation reaction temperature is 270℃, the reaction pressure is 2.0MPa, and the volumetric space velocity is 3.0h- 1. The volume ratio of hydrogen to oil is 400:1.

[0025] After the catalyst is activated, the inlet temperature of the reactor is reduced to 250°C, and the catalytic cracking gasoline and naphtha are introduced into the reaction system at the same time according to the amount of FCC gasoline feedstock oil of 252g / h and the amount of naphtha oil of 468g / h; Increase the inlet temperature of the reactor at a heating rate of 3°C / h until the inlet temperature of the reactor reaches 315°C;

[0026] The inlet temperature of the reactor is lowered to 300℃. According to the feedstock oil quantity of FCC gasoline 468g / h and naphtha oil quantity 252g / h, FCC gasoline and naphtha are introdu...

Embodiment 2

[0035] Load 500ml gasoline hydrogenation upgrading catalyst C in a 500ml adiabatic bed hydrogenation reactor, and contact with hydrogen and naphtha for 35 hours for activation treatment. The activation reaction temperature is 240℃, the reaction pressure is 2.4MPa, and the volumetric space velocity is 2.0h- 1. The volume ratio of hydrogen to oil is 450:1.

[0036] After the catalyst activation is completed, the inlet temperature of the reactor is reduced to 230°C, and the coking gasoline and catalytic reforming oil are introduced into the reaction system at the same time according to the coking gasoline feedstock oil quantity 230g / h and the catalytic reforming oil quantity 346g / h; Increase the inlet temperature of the reactor by 10°C / h until the inlet temperature of the reactor reaches 310°C;

[0037] The inlet temperature of the reactor is reduced to 285°C, and the amount of coking gasoline feedstock oil is 346g / h and the amount of catalytic reforming oil is 230g / h. The coking gaso...

Embodiment 3

[0046] The gasoline hydro-upgrading catalyst A is applied to the 1.2 million tons / year catalytic cracking gasoline hydrogenation unit. Contact with hydrogen and naphtha for 48 hours for activation treatment. The activation reaction temperature is 260°C, the reaction pressure is 1.9MPa, the volumetric space velocity is 1.8h-1, and the hydrogen-to-oil volume ratio is 260:1. After activation, according to the flow rate of FCC gasoline feedstock of 64t / h and the flow rate of hydrorefined oil of 78t / h, the FCC gasoline and hydrorefined oil are introduced into the reaction system at the same time, and the system delivers 142t / h of products; ℃ / h Increase the inlet temperature of the reactor until the reactor inlet temperature reaches 310°C;

[0047] The inlet temperature of the hydro-upgrading reactor is reduced to 300°C, and the FCC gasoline feedstock flow rate is 100t / h and the hydrorefined oil product flow rate is 42t / h. FCC gasoline and hydrorefined oil are simultaneously introduced...

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

The invention relates to a method for operating a gasoline hydro-upgrading catalyst comprising molecular sieves. After a sulfided catalyst filling a gasoline hydro-upgrading reactor is activated, inlet temperature of the reactor is lowered, a mixture of low-olefin lightweight oil and gasoline material is used as a passivator, the gasoline ratio in passivated oil is matched with passivation temperature through oscillatory stepwise temperature rise, and operation process is finished. The gasoline material diluted via the low-olefin lightweight oil is used as the passivator, the passivation process involves both permanent passivation and reversible passivation, and stable operation and catalyst activity stability improving are achieved; meanwhile, the ratio of the catalytic gasoline material in the passivation process is increased gradually, feeding of raw oil is finished while passivation is over, and the process of introducing the material after passivation is over is omitted.

Description

Technical field [0001] The invention relates to a start-up method of a molecular sieve-containing gasoline hydro-upgrading catalyst. After the sulfided catalyst is activated, the feed oil with low olefin content is used as a passivating agent to increase the hydro-upgrading catalyst by swinging steps. Passivation is carried out to achieve the purpose of avoiding flying temperature. It is suitable for the passivation start-up process of various types of gasoline hydro-upgrading catalysts containing molecular sieve, and is especially suitable for the hydro-upgrading of high-octane clean gasoline blending components. Background technique [0002] Catalytic gasoline, coking gasoline, etc. all contain a large amount of sulfides, which require hydrodesulfurization treatment before they can be used as gasoline blending components. Among them, the olefin content of catalytic gasoline and coking gasoline is 30-50v%. Hydrodesulfurization will cause partial saturation of olefins and reduce ...

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): C10G45/64
Inventor 吴杰常晓昕翟月琴王玲玲王廷海向永生姚文君高源李自夏蔡进军王晨晨田力李景峰苟尕莲孟凡芳田爱珍
Owner PETROCHINA CO LTD
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