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

Prepn process of vulcanized catalyst

A catalyst and vulcanization-type technology, which is applied in the field of preparation of hydrogenation catalyst compositions, can solve problems such as self-heating of sulfided catalysts, unfavorable industrial application of catalysts, low catalyst production efficiency, etc. For large-scale use, the effect of improving the vulcanization effect

Active Publication Date: 2007-12-19
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1400056A Coat the pre-sulfurized catalyst containing sulfidation agent with oxygen-containing organic matter containing at least 16 carbon atoms, treat it above 175°C for a period of time, and then activate it with hydrogen to reduce the self-heating problem of the catalyst, but it cannot completely solve the sulfidation state The self-heating problem of the catalyst, and the storage, transportation and loading of the catalyst still have certain problems
In the above-mentioned patents, either the self-heating problem of the catalyst, or the storage, transportation and loading of the catalyst still have certain problems, and there is a problem of low production efficiency in the production of the catalyst, which is not conducive to the industrial application of this type of catalyst

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
  • Prepn process of vulcanized catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The commercial hydrodesulfurization catalyst FH-5A (developed by Fushun Petrochemical Research Institute and produced by Wenzhou Huahua Group Co., Ltd.) was selected. The main composition and properties are shown in Table 1.

[0033] The specific pre-sulfurization process is as follows:

[0034] The molten elemental sulfur is introduced into the oxidation state catalyst, and the introduced amount of the elemental sulfur is 105% of the theoretical sulfur requirement of the catalyst. Then tetrabutylthiuram disulfide (TBTD) was mixed with coked diesel oil, and the mixture was introduced into the catalyst containing elemental sulfur. The amount of TBTD was 3% by weight of the catalyst, and the amount of coked diesel oil was 40% by weight of the catalyst. Finally, it was treated at 160°C for 5 hours at normal pressure and in a stagnant air atmosphere. The heat treatment equipment used the biconical rotary heat processor described in Figure 1, and the speed was 5 rpm to obtai...

Embodiment 2

[0036] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0037] The specific pre-sulfurization process is as follows:

[0038] 1. Dissolving tetramethylthiuram disulfide (TMTD) in benzene, evenly impregnating it on the oxidized state FH-5A catalyst, the addition of TMTD is 5% of the weight of the catalyst, to obtain a catalyst supporting TMTD.

[0039] 2. Dispersing the elemental sulfur in a solvent with a volume ratio of catalytic cracking gasoline and rapeseed oil of 8:1, the amount of solvent is 12% of the catalyst weight, and the amount of elemental sulfur is 90% of the theoretical sulfur content of the catalyst containing metal. The elemental sulfur solvent impregnates the TMTD-supported catalyst obtained in step 1. Heat treatment was performed in a closed device at 180°C for 5 hours, and the final pressure was 0.4 MPa (gauge pressure). The heat treatment equipment used the double-cone rotary heat processor described in Figure 1, and the ...

Embodiment 3

[0045] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0046] The specific pre-sulfurization process is as follows:

[0047] 1. Dissolve dithiodimethyldiphenylthiuram in acetone and introduce it into the catalyst in an oxidized state. The amount of dithiodimethyldiphenylthiuram is 20% of the catalyst weight, and then at 105°C Under treatment for 3 hours, a catalyst containing dithiodimethyldiphenylthiuram was obtained.

[0048] 2. The volume ratio of vacuum distillate oil and peanut oil is a miscible solvent of 1: 2. The solvent consumption is 0.5% of the catalyst weight, and then mixed with the elemental sulfur solid powder. The elemental sulfur consumption is 40% of the metal-containing theoretical sulfur requirement of the catalyst.

[0049] 3. The material obtained in step 2 was treated at 180° C. for 3 hours under normal pressure and in a stagnant air atmosphere. The heat treatment equipment used the double-cone rotary heat processor de...

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 present invention relates preparation process of vulcanized catalyst. During the preparation process, thiram in 0.5-25 wt% of the catalyst, sulfur element in 30-150 % of the theoretic sulfur demand of the catalyst and organic solvent in 0.1-50 wt% of the catalyst are first introduced into the catalyst in oxide state, and the catalyst is then heat treated in dynamic heating apparatus. The catalyst has raised sulfur holding rate, smooth heat release, shortened vulcanizing period and raised production efficiency. The method of the present invention may be used in the treatment of various kinds of hydrogenating catalyst before application.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation catalyst, in particular to a preparation method of a hydrogenation catalyst composition containing a sulfurizing agent after presulfidation treatment outside the device. Background technique [0002] Hydrofining, hydrotreating, hydrocracking and other hydrogenation catalysts generally use alumina, silicon aluminum, molecular sieve and other refractory oxides as carriers, and one or more active metal groups such as molybdenum, tungsten, cobalt, nickel, etc. Sometimes, the catalyst can also contain auxiliary components such as phosphorus, silicon, fluorine, titanium, zirconium, and boron. Generally, the metal component of the catalyst obtained in the production process exists in an oxidized state, while in the hydrogenation reaction process, the active metal component of the catalyst is in a sulfide state (the metal exists in the form of sulfide: Co 9 S 8 、MoS 2 、Ni 3 S 2 、WS 2 etc.) ...

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): B01J37/20B01J27/049C10G45/38
Inventor (要求不公开所有发明人姓名)
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