KR940013596A - Residual catalyst with high metal capacity - Google Patents

Abstract

The present invention relates to a catalyst having improved catalyst life and metal acceptability, a process for preparing the catalyst, and a process for using the catalyst for hydrodesulfurization of metal-containing heavy feedstocks. These catalysts comprise pores with a diameter of 110 to 190 를 accounting for 70% by volume of the pore volume and contain Group VIB and Group VIII metals or metal compounds on a support made of alumina.

Description

Residual catalyst with high metal capacity

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,

Figure 3 shows a 55% trace carbon residue (MCR) conversion rate of 0.46 liquid hourly space velocity feed flow rate of a mixture of 1/3 part by weight Maya atmospheric residue and 2/3 part by weight Arab arabic atmospheric residue. Reactor temperature required to maintain is shown.

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 particle density is less than 1.0, the pore volume of the pores having a diameter of 110 to 190 mm 3 is 70% or more, and the pore volume of the pore having a diameter of 500 mm 3 or more is 5. A catalyst composition having improved metal removal capability for hydrodesulfurization of heavy oil, characterized in that the pore volume of pores having a pore diameter of less than% and a pore diameter of 1000 mm 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 0.6 to about 1.0 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 firing it to complete, pore volume of pores with a pore volume of at least 0.5 cm 3 per g and a pore diameter in the range of 110 to 190 mm 3. Group VIB and Group VIII, which can decompose a porous support having a pore volume of less than 5% of pores having a diameter of at least 500% and a pore diameter of at least 500 mm and a pore volume of less than 2% of a pore having a pore diameter of at least 1000 mm 2 to metal oxides by heat. Impregnated with an aqueous solution containing at least one catalyst material or catalyst material precursor selected from the group consisting of group metal compounds, followed by drying and firing the resulting impregnated support, thereby improving metal acceptance during hydrodesulfurization of heavy oil. A method of making a catalyst having the ability. Heavy oil under hydrodesulfurization; The pore volume is about 0.5 to about 1.1 cm 3 per gram, the particle density is less than 1.0, the pore volume of the pores with a diameter of 110 to 190 mm 3 is 70% or more, the pore volume of the pores with a diameter of 500 mm 3 or more, An alumina support having a pore volume of less than 2% of pores having a pore diameter of 1000 mm or more; And contacting a catalyst having an improved metal-accepting capacity 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 110 to 190 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 220 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 the nitrogen base contains less than about 0.95 equivalents of base per equivalent of acid. The method according to claim 2, wherein the pore volume of the pores having a diameter of 110 to 190 mm 3 in the support is 80% or more. 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. 3. The method of claim 2, wherein less than 5% of the pore volumes are pores having a diameter of at least 220 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. The method according to claim 3, wherein the pore volume of the pores having a diameter of 110 to 190 mm 3 in the support 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 volumes are pores having a diameter of at least 220 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% by weight and 9% by weight of nickel and molybdenum, respectively. ※ Note: The disclosure is based on the initial application.