KR940013595A - Highly Active Residual Catalyst - Google Patents

Abstract

The present invention relates to a catalyst having improved catalytic activity, a process for preparing the catalyst and a process for using the catalyst for hydrodesulfurization of a metal-containing heavy feedstock. The catalyst comprises 70% by volume of pores having a diameter of 70 to 130 mm 3 and occupies 70% by volume of the pore volume and contains Group VIB and Group VIII metals or metal compounds on a support made of alumina.

Description

Highly Active Residual Catalyst

As this is a public information case, the full text was not included.

1 shows the pore diameter distribution of the catalyst of the present invention,

2 shows the pore diameter distribution of the prior art catalyst,

3 shows the reactor temperature needed to maintain a 55% trace carbon residue (MCR) conversion rate at 0.35 liquid hourly space velocity feed flow rate of 760 ° F + Arab heavy atmospheric residue.

Claims (23)

Alumina support; And a Group VIB component and a Group VIII component selected from the group consisting of metals, oxides and sulfides of Group VIB and Group VIII elements; The pore volume of the support ranges from about 0.5 to about 1.1 cm 3 per g, the pore volume of the pores having a diameter of 70 to 130 mm 3 is 70% or more, the pore volume of the pores having a diameter of 300 mm 3 or more is less than 5%, and the pore diameter is A catalyst composition exhibiting improved activity for hydrodesulfurization of heavy oil, characterized in that the pore volume of pores of 1000 kPa or more is less than 2%. (a) treating the particulate solid by mixing the peptizable particulate solid containing predominantly alpha-alumina monohydrate with an acid aqueous solution to a pH in the range of about 3.0 to 4.5; (b) neutralizing at least a portion of the mixed acid by mixing an aqueous solution of nitrogen base containing in the range of about 0.2 to about 0.5 equivalents of base per equivalent of acid in the treated solid; (c) forming a neutralized or partially neutralized solid; (d) prepared by drying the molded solid at a temperature in the range of about 150 ° F. to 1700 ° F., and calcining to complete, pore volume of pores having a pore volume of at least 0.5 cm 3 per g and a pore diameter in the range of 70 to 130 mm 3. Group VIB and Group VIII, which can decompose a porous support having a pore volume of less than 5% and a pore volume of less than 2% with a pore diameter of 300 mm or more and less than 2% with a pore diameter of 1000 mm or more to a metal oxide by heat. After impregnating with an aqueous solution containing at least one catalyst material or catalyst material precursor selected from the group consisting of a group metal compound, it is dried, and the resulting impregnated support is calcined. How to manufacture. Heavy oil under hydrodesulfurization; The pore volume is about 0.5 to about 1.1 cm 3 per g, the pore volume of the pore having a diameter of 70 to 130 mm 3 is 70% or more, the pore volume of the pore having a diameter of 300 mm 3 or more is less than 5%, and the pore diameter is 1000 mm 3 or more An alumina support having a pore volume of less than 2%; And contacting a catalyst comprising a Group VIB component and a Group VIII component selected from the group consisting of metals, oxides and sulfides of Group VIB and Group VIII elements. The catalyst composition according to claim 1, wherein the pore volume of pores having a diameter of 70 to 130 mm 3 is 80% or more. The catalyst composition of claim 1, wherein the Group VIB and Group VIII compounds are selected from the group consisting of compounds of cobalt, nickel and molybdenum. The catalyst composition according to claim 1, wherein less than 5% of the pore volumes are pores having a diameter of 140 mm 3 or more. The catalyst composition of claim 1, wherein the pores having a diameter of 1000 mm 3 or more constitute less than 1% of the pore volume. 3. The process according to claim 2, wherein the acid solution is selected from acid solutions of nitric acid, hydrochloric acid, hydrofluoric acid and hydrobromic acid. The method of claim 2, wherein the size of the alpha-alumina monohydrate is in the range of about 500 microns or less. The method of claim 2, wherein the general formula of the nitrogen base is R ₃ N or R ₃ NHOH, all R groups are the same or different and are selected from the group consisting of hydrogen and alkyl groups of 1 to 3 carbon atoms. The process according to claim 2, wherein the aqueous solution is a solution of cobalt salt or nickel salt and heteropolymolybdic acid and the impregnation is carried out in one step. The catalyst composition of claim 1, further comprising about 3 wt% and 9 wt% nickel and molybdenum, respectively. The method of claim 2 wherein the solution of nitrogen base contains less than about 0.35 equivalents of base per equivalent of acid. The process according to claim 2, wherein the pore volume of the pores having a diameter of 70 to 130 mm 3 in the catalyst is at least 80%. 3. The process of claim 2, wherein the catalyst is further selected from the group consisting of compounds of Group VIB and Group VIII, consisting of compounds of cobalt, nickel and molybdenum. The method of claim 2, wherein less than 5% of the pore volumes are pores having a diameter of at least 140 mm 3. The method of claim 2, wherein the pores having a diameter of 1000 mm 3 or more constitute less than 1% of the pore volume. 3. The process of claim 2, wherein the catalyst further contains about 3% by weight and 9% by weight of nickel and molybdenum, respectively. 4. The process according to claim 3, wherein the pore volume of the pores having a diameter of 70 to 130 mm 3 in the catalyst is at least 80%. 4. The process of claim 3, wherein the catalyst is further selected from the group consisting of compounds of Group VIB and Group VIII, consisting of compounds of cobalt, nickel and molybdenum. 4. The method of claim 3, wherein less than 5% of the pore volume is pores having a diameter of at least 140 mm 3. 4. The method of claim 3 wherein the pores having a diameter of at least 1000 mm 3 make up less than 1% of the pore volume. 4. The process of claim 3, wherein the catalyst further contains about 3 weight percent and 9 weight percent nickel and molybdenum, respectively. ※ Note: The disclosure is based on the initial application.