Process for ex situ sulfiding catalyst containing an S-containing additive

a technology of additives and catalysts, which is applied in the direction of physical/chemical process catalysts, other chemical processes, separation processes, etc., can solve the problems of unusable components such as acetic acid formation during the start-up stag

Inactive Publication Date: 2002-01-03
AKZO NOBEL NV
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Problems solved by technology

It has appeared that when the catalysts of the above references are brought into the hydrot

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example

[0056] A conventional hydrotreating catalyst containing 24 wt. % molybdenum, calculated as trioxide, 4 wt. % nickel, calculated as oxide, and 7 wt. % phosphorus, calculated as P.sub.2O.sub.5, on a gamma-alumina carrier was impregnated by pore volume impregnation with a solution of HS--CH.sub.2--COOH in water, containing 1 mole HS--CH.sub.2--COOH per mole of the total of molybdenum and nickel. Then, the catalyst was dried rotating in hot air to a product temperature of about 100.degree. C.

[0057] The additive-containing starting catalyst (10 ml) was sulfided in the gas phase at atmospheric pressure using a mixture of 10 vol. % H.sub.2S in H.sub.2 (flow=5 l / hr) in one step. The temperature was increased by 0.5.degree. C. per minute to 300.degree. C. and held at that temperature for 3 hours.

[0058] The catalyst was tested in an upflow tubular reactor using a SRGO with the properties given in table 1. The reaction conditions are given in table 2.

1TABLE 1 feedstock properties Type feed Str...

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Abstract

The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive wherein the catalyst composition is contacted with hydrogen and a sulfur-containing compound in the gaseous phase, characterized in that the process is carried out ex situ. By carrying out the process ex situ, the formation of undesirable side compounds in the hydrotreating unit is prevented. Additionally, the reactor suffers less downtime, and the start-up of the reactor may be simplified. The S-containing organic additive preferably is a mercapto-compound, more preferably a mercaptocarboxylic acid represented by the general formula HS-R1-COOR, wherein R1 stands for a divalent hydrocarbon group with 1-about 10 carbon atoms and R stands for a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a linear or branched alkyl group having 1 to about 10 carbon atoms. The invention also pertains to the catalyst made by the above process and a process for hydrotreating a hydrocarbon feed by contacting the feed with the catalyst at hydrotreating conditions.

Description

[0001] This application claims priority from European Patent Application Serial No. 00201299.5, filed on Apr. 11, 2000 and U.S. patent application Ser. No. 60 / 201,692, filed on May 3, 2000.[0002] 1. Field of the Invention[0003] The present invention relates to a process for ex situ sulfiding a catalyst containing an S (sulfur)-containing organic additive, in particular a hydrotreating catalyst containing an S-containing organic additive.[0004] 2. Prior Art[0005] Hydrotreating catalysts comprise hydrogenation metal components, generally a Group VI metal component such as molybdenum and / or tungsten and a Group VIII metal component, such as nickel and / or cobalt generally on an oxidic carrier. Before use, the hydrogenation metal components present in hydrotreating catalysts will generally be converted into their sulfides. This process is conventionally indicated as sulfidation or presulfidation. It is generally done before the catalyst is used in hydrotreating to ensure a stable reactor...

Claims

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Application Information

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IPC IPC(8): B01J23/85B01J23/88B01J27/188B01J31/02B01J31/04B01J31/28B01J37/20C10G45/08
CPCB01J23/85B01J23/88B01J27/188B01J31/0217B01J31/04B01J31/28B01J37/20C10G45/08
Inventor EIJSBOUTS, SONJA
Owner AKZO NOBEL NV
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