Start-up method of gasoline hydro-upgrading catalyst containing molecular sieve

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

Active Publication Date: 2018-08-10
PETROCHINA CO LTD
View PDF6 Cites 0 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
  • Start-up method of gasoline hydro-upgrading catalyst containing molecular sieve
  • Start-up method of gasoline hydro-upgrading catalyst containing molecular sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0025] After the catalyst activation is completed, the inlet temperature of the reactor is lowered to 250°C, and the FCC gasoline and naphtha are introduced into the reaction system at the same time according to the FCC gasoline raw material oil volume of 252g / h and naphtha oil volume 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°C, and the FCC gasoline and naphtha are introduced into the reaction system at the same time according to the amount of FCC gasoline raw material o...

Embodiment 2

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

[0036] After the activation of the catalyst, the inlet temperature of the reactor was lowered to 230°C, and coked gasoline and catalytic reformed oil were introduced into the reaction system at the same time according to the amount of coked gasoline raw material oil of 230g / h and the amount of catalytic reformed oil of 346g / h; Increase the inlet temperature of the reactor by 10°C / h until the inlet temperature of the reactor reaches 310°C;

[0037] Reduce the inlet temperature of the reactor to 285°C, and introduce coked gasoline and catalytic reformed oil into the reaction system at the same time according to the amount of cok...

Embodiment 3

[0046] Apply gasoline hydro-upgrading catalyst A to a 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 volume space velocity is 1.8h-1, and the volume ratio of hydrogen to oil is 260:1. After the activation, according to the flow rate of FCC gasoline raw material of 64t / h and the flow rate of hydrorefined oil product of 78t / h, FCC gasoline and hydrorefined oil are introduced into the reaction system at the same time, and the system sends out products 142t / h at the same time; according to 20 °C / h increase the inlet temperature of the reactor until the inlet temperature of the reactor reaches 310°C;

[0047] Reduce the inlet temperature of the hydro-upgrading reactor to 300°C, and introduce the catalytic cracking gasoline and hydro-refined oil into the reaction system at the same time according to the fee...

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 for a gasoline hydrogenation-upgrading catalyst containing molecular sieves, which mainly comprises the following steps: after the sulfided catalyst is activated, the hydrogenation-upgrading catalyst is treated by using a raw material oil with low olefin content as a passivating agent through a swinging stepwise temperature rise. It is used for passivation to avoid overheating. It is suitable for the passivation start-up process of various types of gasoline hydrogenation modification catalysts containing molecular sieves, especially for the hydrogenation modification of blending components for producing high-octane clean gasoline. Background technique [0002] Catalytic gasoline, coker gasoline, etc. all contain a large amount of sulfide, and need to undergo hydrodesulfurization treatment before they can be used as gasoline blending components. Among them, the content of olefins in catalytic gasoline and coker...

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): 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 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