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

Preparation method for start-up of hydro-upgrading unit

A technology for hydro-modification and preparation methods, which is used in the start-up of hydrotreating operations, the petroleum industry, and the treatment of hydrocarbon oil, etc., to achieve the effect of prolonging the formation process, broadening the scope of application, and solving the effect of concentrated decomposition of heat

Active Publication Date: 2021-02-05
CHINA PETROLEUM & CHEM CORP +1
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problems existing in the gas-tight start-up process of using the second type of active center external pre-sulfurized catalyst, the present invention provides a preparation method for the hydrogenation start-up upgrading device, mainly for the hydrogenation upgrading process

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
  • Preparation method for start-up of hydro-upgrading unit
  • Preparation method for start-up of hydro-upgrading unit
  • Preparation method for start-up of hydro-upgrading unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A hydrogenation unit is equipped with an external presulfidation type II active center hydrogenation upgrading supporting catalyst. The properties of the catalyst are shown in Table 2, and the system design pressure is 10MPa. Preparations for start of work include:

[0046] (1) Introduce nitrogen into the reaction system, and perform low-pressure airtightness at 1.0Pa and 3.0MPa in turn;

[0047] (2) After the airtightness is qualified, reduce the system pressure to 2.5MPa, introduce hydrogen to keep the pressure constant at 2.8MPa, and then raise the temperature of the catalyst bed to 90°C for 9 hours; the heating rate is 15°C / h;

[0048] (3) Keep the pressure constant, and continue to raise the temperature of the catalyst bed to 130°C at a rate of ~6°C / h for 9 hours;

[0049] (4) Continue to raise the catalyst bed temperature to 170°C at a rate of ~6°C / h, and keep the temperature constant;

[0050] (5) When the temperature of the high-pressure separator is higher th...

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
decomposition temperatureaaaaaaaaaa
decomposition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for starting a hydrogenation reforming device. The method is aimed at the start-up process of the external presulfided hydrofining catalyst containing dihydroxy compounds and the hydrogenation upgrading catalyst with large pore volume, especially the airtight process, and the constant pressure and temperature rise section, the constant pressure and temperature rise section and the constant pressure and temperature rise are set. In the section, the heat generated by the hydrogenolysis of sulfides and / or additives during the airtight start-up process is reasonably distributed, controlled and released stably, avoiding the occurrence of concentrated exothermic phenomena, and reducing the risk of overheating and overheating. The method of the invention completely solves the obstacles in the industrial application process of the combined catalyst, not only improves the use activity of the catalyst, but also eliminates the hidden danger of environmental protection caused by leakage of the vulcanizing agent, and has good application prospects.

Description

technical field [0001] The invention relates to a preparation method for a hydrogenation upgrading device, in particular to an airtight method for reducing the risk of over-temperature during the airtight process of an external presulfurized type II active center catalyst. Background technique [0002] The hydrogenation process is the process of hydrogenation, high temperature conditions and the action of catalysts to make raw oil hydrodesulfurization, hydrodenitrogenation, polycyclic aromatic hydrocarbons hydrogenation saturation, etc., so as to convert it into clean oil or intermediate blends. The hydrogenation catalysts currently produced in the domestic industry are basically oxidation-type. New catalysts or regenerated catalysts produced in industry contain active metal components (Mo, Ni, Co, W) in the oxidation state (MoO 3 , NiO, CoO, WO 3 ) exists in the form of The practice of basic research and industrial application shows that most of the active metal componen...

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): C10G49/24
CPCC10G49/24C10G2300/4006C10G2300/4012C10G2300/703
Inventor 王仲义崔哲彭冲曹正凯唐兆吉孙士可
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