Other

Nippon Ketjen Co., Ltd.

Albemarle Corporation

Albemarle Europe Sprl

Albemarle Netherlands B.v.

Tetsuro Kamo

Marcel Adriaan Jansen

Masafumi Shimowake

Sonja Eijsbouts

Frans Lodewijk Plantenga

Katsuhisa Fujita

Franciscus Wilhelmus Houtert

Yoshimasa Inoue

Franciscus Wilhelmus Van Houtert

Toshiyuki Ado

Naohiro Nishimoto

Eiichi Yano

Nobuhito Matsumoto

The invention pertains to a process for activating an hydrotreating catalyst comprising a Group VIB metal oxide and a Group VIII metal oxide which process comprises contacting the catalyst with an acid and an organic additive which has a boiling point in the range of 80-500&#xb0; C. and a solubility in water of at least 5 grams per liter (20&#xb0; C., atmospheric pressure), optionally followed by drying under such conditions that at least 50% of the additive is maintained in the catalyst. The hydrotreating catalyst may be a fresh hydrotreating catalyst or a used hydrotreating catalyst which has been regenerated.

Process for activating a hydrotreating catalyst

The present invention pertains to a process for regenerating and rejuvenating an additive-based hydrotreating catalyst containing Group VIB and Group VIII hydrogenation metals. The process comprises the steps of regenerating the catalyst by contacting it with an oxygen-containing gas at a maximum temperature of 500&#xb0; C., followed by rejuvenating the catalyst by contacting it with an organic additive comprising an organic compound, other than a compound that the catalyst is contacted with in the course of its use as a catalyst prior to regeneration and rejuvenation. The organic additive is incorporated into the catalyst. If necessary, the catalyst may then be dried at such a temperature that at least 50% of the additive is maintained in the catalyst. The process according to the invention makes it possible to restore the activity of a used additive-based hydrotreating catalyst to its original level, or even to improve it to above that level.

Process for regenerating and rejuvenating additive-based catalysts

The invention pertains to a process for preparing spherical oxide particles comprising the steps of shaping a starting material comprising an oxide hydrate into particles of substantially constant length by leading the material to a set of two rolls rotating towards each other followed by leading the material to a roll equipped with grooves to form rod-type shapes, cutting the rod-type shapes into particles of substantially constant length, converting the thus formed particles into spheres, and heating the particles to convert the oxide hydrate into an oxide. The process results in particles in which there is substantially no difference in density between the core portion and the shell portion of the particles, which results in a high abrasion resistance. The particles prepared by the claimed process are particularly suitable for the preparation of hydroprocessing catalysts, more in particular for the preparation of hydroprocessing catalysts suitable for the hydroprocessing of heavy hydrocarbon feeds.

Process for producing spherical oxide particles

The invention relates to a spherical catalyst composition comprising a Group VI metal component and optionally a Group VIII metal component on a carrier, which catalyst has a particle size of 0.5-7 mm, a total pore volume of 0.5-1.3 ml/g, an average pore diameter of 15-30 nm, and a % PV(>100 nm) of 2-30%, there being substantially no difference in density between the core region of the carrier particles and their surface regions. The catalyst is particularly suitable for use in non-fixed bed processes for the hydroprocessing of heavy hydrocarbon feeds. It has high hydrodesulfurization and hydrodemetallization activity in combination with a high abrasion resistance.

Hydroprocessing catalyst and process

The present invention pertains to a process for regenerating a used additive-based catalyst comprising the step of regenerating the catalyst by contacting it with an oxygen-containing gas at a maximum temperature of 500&deg; C. Preferably, the maximum catalyst temperature during the regeneration step is 300-500&deg; C., more preferably 320-475&deg; C., even more preferably 350-425&deg; C. The regenerated additive-based catalyst obtained with the process according to the invention has a higher activity than an additive-based catalyst regenerated at a higher temperature. Additionally, its activity is also higher than that of a corresponding catalyst, which never contained an additive.

Process for regenerating additive-based catalysts

A catalyst composition suitable for effecting simultaneous hydrodesulphurisation and hydrodemetallisation of sulphur and metals containing feedstocks which shows a high hydrodesulphurisation activity, a high hydrodemetallisation activity, and a long life is disclosed. The catalyst includes: a) a support, at least 90 wt. % of which includes alumina, which alumina has an R value of from 0.08 to 0.30, the R value being defined as the ratio between the integrated intensity of the X-ray diffraction peak at 2 .theta.=32.degree. and the integrated intensity of the X-ray diffraction peak at 2 .theta.=46.degree., b) from 2 to 8 wt. % of a Group VIB metal component, calculated as metal, c) from 0.5 to 2.5 wt. % of a Group VIII metal component, calculated as metal; and d) a pore size distribution as determined by nitrogen adsorption satisfying the following requirements: (i) a pore volume of from 0.5 to 1.0 ml/g, (ii) an average pore diameter of from 18 to 30 nm, and (iii) of the pore volume of pores with a diameter below 60 nm at least 40% is present in pores within a range of the average pore diameter .+-.5 nm. A process for use of this catalyst and for its preparation is also disclosed.

Hydroprocessing catalyst and use thereof

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Niihama, Japan

Tetsuro Kamo