FIELD: chemistry.
SUBSTANCE: present invention relates to a method of regenerating catalytic activity of a spent hydrogen processing catalyst which does not contain an additive. A method is described for regenerating catalytic activity of a spent hydrogen processing catalyst which does not contain an additive (versions), which involves: bringing a spent non-additive containing hydrogen processing catalyst which contains a metal component and carrier material, which has low catalytic activity with respect to the catalyst in fresh state before its use, which results in the catalyst being spent, with a solution, where the said solution contains a chelating agent chosen from a group of compounds consisting of amino carboxylic acids, and a solvent, and where said contacting takes place in a period of time longer than 10 hours, with provision for regenerated catalytic activity, obtaining old catalyst containing said chelating agent and said solvent, where said spent hydrogen processing catalyst contains amount of said chelating agent in the interval from 0.005 mole of chelating agent per mole of active metal to 1 mole of chelating agent per mole of active metal; keeping said old catalyst in conditions which include drying temperature so as to remove part of said solvent from said old catalyst with removal of not less than 50 wt % of said chelating agent from said old catalyst, obtaining dried old catalyst as a result; and treatment of said dried old catalyst with sulphur, obtaining regenerated catalyst. Also described is a catalyst produced using methods described above and hydrogen processing method, involving bringing hydrocarbon starting material in hydrogen processing conditions with a catalyst produced using methods described above.
EFFECT: higher degree of regenerated catalytic activity of spent hydrogen processing catalyst.
19 cl, 2 tbl, 2 ex
