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
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  • Summary
  • Abstract
  • Description
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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, transp

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  • Prepn process of vulcanized catalyst

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Example Embodiment

[0031] Example 1

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

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

[0034] The molten elemental sulfur is introduced into the oxidation state catalyst, and the introduced amount of elemental sulfur is 105% of the theoretical sulfur demand of the catalyst. Then, tetrabutylthiuram disulfide (TBTD) is mixed with coked diesel, and the mixture is introduced into a catalyst containing elemental sulfur. The amount of TBTD is 3% by weight of the catalyst, and the amount of coked diesel is 40% by weight of the catalyst. Finally, it was treated at 160°C for 5 hours under normal pressure and non-flowing air atmosphere. The heat treatment equipment used the double-cone rotary heat processor as shown in Figure 1 at a speed of 5 rpm to obtain the final ...

Example Embodiment

[0035] Example 2

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

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

[0038] 1. Dissolve tetramethylthiuram disulfide (TMTD) in benzene and uniformly immerse it on the oxidized FH-5A catalyst. The addition amount of TMTD is 5% of the weight of the catalyst to obtain a TMTD-supported catalyst.

[0039] 2. Disperse 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 weight of the catalyst, and the amount of elemental sulfur is 90% of the theoretical sulfur demand of the catalyst containing metal. The solvent of elemental sulfur is impregnated in the TMTD-supported catalyst obtained in step 1. The heat treatment was conducted 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 as shown in Fig...

Example Embodiment

[0044] Example 3

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

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

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

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

[0049] 3. The material obtained in step 2 is treated at 180°C for 3 hours under normal pressure and non-flowing air atmosphere. The heat treatment equipment adopts the double-cone rotary h...

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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

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Application Information

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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
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