Check patentability & draft patents in minutes with Patsnap Eureka AI!

In-situ regeneration method of ruthenium-based catalyst used for Fischer-Tropsch synthesis in fixed-bed reactor

A ruthenium-based catalyst, Fischer-Tropsch synthesis technology, applied in catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effects of reducing usage, saving operating costs, and extending service life

Pending Publication Date: 2020-09-22
SYNFUELS CHINA INNER MONGOLIA CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple and easy, and the obtained catalyst has good stability and high activity, but it is limited to Fe-based catalysts.

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
  • In-situ regeneration method of ruthenium-based catalyst used for Fischer-Tropsch synthesis in fixed-bed reactor
  • In-situ regeneration method of ruthenium-based catalyst used for Fischer-Tropsch synthesis in fixed-bed reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The evaluation test of ruthenium-based catalysts was carried out in a fixed-bed reactor, and the selected ruthenium-based catalysts were prepared by excess impregnation method, alumina carrier, 5% Ru loading (by mass). The reduction conditions for preparing fresh ruthenium-based catalysts before regeneration are: H 2 , 350℃, 0.5MPa, GHSV=1000h -1 , constant temperature for 12h; the Fischer-Tropsch synthesis reaction conditions of the ruthenium-based catalyst evaluation test before and after regeneration are: 210°C, 2MPa, GHSV=5000h -1 , H 2 / CO(V:V)=2:1. Table 1 shows the evaluation results of the ruthenium-based catalysts before and after regeneration.

[0036] In-situ regeneration of ruthenium-based catalysts: before using naphtha to treat ruthenium-based catalysts, the naphtha is heated and pressurized to 250°C / 2.5MPa, and the naphtha in a subcritical state is extracted from the ruthenium-based catalyst to be regenerated The top of the reactor is injected, and th...

Embodiment 2

[0038] The ruthenium-based catalyst evaluation test was carried out in a fixed-bed reactor. The selected fresh ruthenium-based catalyst was prepared by an excessive impregnation method, a silicon-aluminum composite support, 4.2% Ru loading (by mass), and the reduction of the fresh ruthenium-based catalyst prepared before regeneration The condition is: H 2 , 300℃, 0.2MPa, GHSV=2000h -1 , constant temperature for 10h; the Fischer-Tropsch synthesis reaction conditions of the ruthenium-based catalyst evaluation test before and after regeneration are: 200°C, 3MPa, GHSV=6000h -1 , H 2 / CO(V:V)=2.1:1. Table 1 shows the evaluation results of the ruthenium-based catalysts before and after regeneration.

[0039] In-situ regeneration of ruthenium-based catalysts: Before using naphtha to treat ruthenium-based catalysts, the naphtha is heated and pressurized at 300°C / 2.0MPa, and the naphtha in a subcritical state is extracted from the reactor where the ruthenium-based catalysts to be re...

Embodiment 3

[0041] The ruthenium-based catalyst evaluation test was carried out in a fixed-bed reactor, and the selected fresh ruthenium-based catalyst was prepared by an excessive impregnation method, a titanium dioxide carrier, 4.6% Ru loading (by mass), and the reduction condition for preparing a fresh ruthenium-based catalyst before regeneration was :H 2 , 350℃, 0.5MPa, GHSV=1000h -1 , constant temperature for 12h; the Fischer-Tropsch synthesis reaction conditions of the ruthenium-based catalyst evaluation test before and after regeneration are: 190°C, 2MPa, GHSV=5000h -1 , H 2 / CO(V:V)=2:1. Table 1 shows the evaluation results of the ruthenium-based catalysts before and after regeneration.

[0042] In-situ regeneration of ruthenium-based catalysts: Before using naphtha to treat ruthenium-based catalysts, the naphtha is heated and pressurized at 300°C / 2.5MPa, and the naphtha in a subcritical state is extracted from the reactor where the ruthenium-based catalysts to be regenerated a...

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
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides an in-situ regeneration method of a ruthenium-based catalyst used for Fischer-Tropsch synthesis in a fixed-bed reactor. The method comprises the following steps: (1) treating aFischer-Tropsch synthesis ruthenium-based catalyst to be regenerated by using naphtha in a subcritical state; (2) purging the catalyst subjected to naphtha treatment by using an inert gas; (3) oxidizing the purged catalyst by using oxygen-containing gas; and (4) carrying out hydrogen reduction on the oxidized catalyst to obtain the regenerated Fischer-Tropsch synthesis ruthenium-based catalyst. According to the in-situ regeneration method provided by the invention, in-situ regeneration of the fixed bed Fischer-Tropsch synthesis ruthenium-based catalyst can be realized, the regeneration processis simple and convenient to operate and easy to realize, and used materials and reagents are cheap. According to the method, catalyst deactivation caused by carbon deposition, metal phase change andpartial poison pollution is eliminated, so that the purpose of prolonging the service lifetime of the Fischer-Tropsch synthesis ruthenium-based catalyst is achieved.

Description

technical field [0001] The invention relates to an in-situ regeneration method of a fixed-bed Fischer-Tropsch synthesis ruthenium-based catalyst, belonging to the technical field of catalysts. Background technique [0002] The Fischer-Tropsch synthesis (FTS) process combines synthesis gas (carbon monoxide (CO) and hydrogen (H 2 ) into liquid hydrocarbons or hydrocarbons, is one of the most important ways to efficiently transform and utilize non-petroleum carbon-containing resources (natural gas, coal, residual oil, and biomass, etc.). In the Fischer-Tropsch synthesis process, under the action of the catalyst, the synthesis gas obtains the primary product, and generates a series of hydrocarbons (C1-C200) with different carbon numbers, in which the main product is straight-chain alkanes, and some low-carbon olefins and alcohols are obtained Wait. The initial product is further processed (such as separation, hydrocracking or hydroisomerization, etc.) to obtain certain specifi...

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 Applications(China)
IPC IPC(8): B01J38/04B01J38/10B01J38/12B01J38/50B01J38/56B01J23/96
CPCB01J38/50B01J38/56B01J38/12B01J38/10B01J38/04B01J23/96
Inventor 周建强燕来黄礼春索海云郜文斌王缠和李国强杨勇
Owner SYNFUELS CHINA INNER MONGOLIA CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com