A method for recycling hydrogenation catalyst waste

Abstract

The invention discloses a recovery and reutilization method of a hydrogenation catalyst waste material. The method comprises the following contents of (1) crushing carriers and / or catalyst waste materials; then, selecting a sieve being 180 to 200 meshes for sieving; remaining the sieved powder for later use; (2) pulping the powder obtained in the step (1) for later use; obtaining slurry with the solid content being 15 to 55 weight percent; adding a nitric acid-phosphoric acid-organic acid solution under the stirring condition; raising the temperature to 65 to 100 DEG C; maintaining the constant temperature for 30 to 90min; cooling the materials to the room temperature; then, adding organic amine; performing uniform mixing; obtaining sol slurry of the waste material; (3) uniformly mixing waste material sol slurry, modified macroporous aluminum oxide powder, microporous aluminum oxide powder mixture and extrusion aids; performing mixed kneading, shaping, drying and roasting to obtain analuminum oxide carrier; (4) loading active ingredients to obtain hydrogenation catalysts. The method has the advantages that the hydrogenation catalyst waste material can be effectively recovered andreused; no waste water and waste slag are generated; no environment pollution exists; meanwhile, the catalyst obtained by the method has high catalysis activity.

Description

technical field

[0001] The invention relates to a recycling method for hydrogenation catalyst waste materials. Background technique

[0002] As the world's crude oil production is becoming more and more heavy, and the demand for clean oil products is increasing today, in the process of producing clean oil products, the hydrodesulfurization process technology of petroleum fractions plays an increasingly important role. The demand for hydrogen catalysts is also increasing.

[0003] Usually, the carrier of the hydrogenation catalyst is activated alumina, and the metal components are non-noble metals. Generally, the metals of Group VIB and / or Group VIII are the active components. The metals of Group VIB are generally Mo and W, and the metals of Group VIII are generally Co, Ni.

[0004] During the preparation of hydroprocessing catalysts, residues and wastes are generated in the form of raw materials, intermediate process products and catalyst residues. Because industrial wast...

Images