Jx Nippon Oil Energy Corporation

Japan Petroleum Energy Center

Nobuharu Kimura

Souichirou Konno

Yoshimu Iwanami

Wataru Sahara

The present invention relates to a regenerated hydrotreatment catalyst regenerated from a hydrotreatment catalyst for treating a petroleum fraction, the hydrotreatment catalyst being prepared by supporting molybdenum and at least one species selected from metals of Groups 8 to 10 of the Periodic Table on an inorganic carrier containing an aluminum oxide, wherein a residual carbon content is in the range of 0.15 mass % to 3.0 mass %, a peak intensity of a molybdenum composite metal oxide with respect to an intensity of a base peak is in the range of 0.60 to 1.10 in an X-Ray diffraction spectrum, and a peak intensity of a Mo&#x2014;S bond derived from a residual sulfur peak with respect to an intensity of a base peak is in the range of 0.10 to 0.60 in a radial distribution curve obtained from an extended X-ray absorption fine structure spectrum of an X-ray absorption fine structure analysis.

Regenerated hydrotreatment catalyst

Provided is a process for producing a regenerated hydrotreating catalyst by regenerating a spent hydrotreating catalyst in a prescribed temperature range, wherein the prescribed temperature range is a temperature range of T&#x2212;30&#xb0; C. or more and T+30&#xb0; C. or less, as determined by subjecting the spent hydrotreating catalyst to a differential thermal analysis, converting a differential heat in a measuring temperature range of 100&#xb0; C. or more and 600&#xb0; C. or less to a difference in electromotive force, differentiating the converted value twice by temperature to provide a smallest extreme value and a second smallest extreme value, and representing a temperature corresponding to the extreme value on the lower-temperature side as Tand a temperature corresponding to the extreme value on the higher-temperature side as T.

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Tokyo, Japan

Nobuharu Kimura