Process for the production of LPG rich in olefins and high quality gasoline
First Claim
1. A process for producing LPG rich in propylene, butylenes and high octane number gasoline by catalytic conversion which comprises:
- (1) contacting in a riser or a fluidized bed reactor a preheated hydrocarbon feedstock with a solid acidic catalyst which contains three zeolitic active components including rare-earth-containing high silica zeolite having the structure of a pentasil (ZRP), rare-earth-Y zeolite (REY) and high silica Y zeolite, and(2) converting said feedstock in the reactor at a temperature in the range of from about 480°
C. to about 550°
C., a pressure in the range of from about 130 KPa to about 350 KPa, a weight hourly space velocity in the range of 1 to 150 hr-1, and a catalyst-to-oil ratio in the range of 4 to 15.
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Abstract
A process for producing LPG rich in propylene, butylenes and high octane number gasoline by catalytic conversion which comprises contacting the preheated hydrocarbon feedstock with a solid acidic catalyst which contains rare-earth-containing high silica zeolite having the structure of a pentasil (ZRP), rare-earth-Y zeolite (REY) and high silica Y zeolite in a riser or a fluidized bed reactor, at a temperature in the range of from about 480° C. to about 550° C., a pressure in the range of from about 130 KPa to about 350 KPa, a weight hourly space velocity in the range of 1 to 150 hr-1, a catalyst-to-oil ratio in the range of 4 to 15, and a steam-to-feedstock ratio in the range of 0.05 to 0.12:1 by weight.
100 Citations
18 Claims
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1. A process for producing LPG rich in propylene, butylenes and high octane number gasoline by catalytic conversion which comprises:
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(1) contacting in a riser or a fluidized bed reactor a preheated hydrocarbon feedstock with a solid acidic catalyst which contains three zeolitic active components including rare-earth-containing high silica zeolite having the structure of a pentasil (ZRP), rare-earth-Y zeolite (REY) and high silica Y zeolite, and (2) converting said feedstock in the reactor at a temperature in the range of from about 480°
C. to about 550°
C., a pressure in the range of from about 130 KPa to about 350 KPa, a weight hourly space velocity in the range of 1 to 150 hr-1, and a catalyst-to-oil ratio in the range of 4 to 15. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A process for producing LPG rich in propylene, butylenes and high octane number gasoline by catalytic conversion which comprises:
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(1) contacting in a riser or a fluidized bed reactor a preheated hydrocarbon feedstock with a solid acidic catalyst which contains a matrix and three zeolithic active components including rare-earth-containing high silica zeolite having the structure of a pentasil (ZRP), rare-earth-Y zeolite (REY) and high silica Y zeolite, and (2) converting said feedstock in the reactor at a temperature in the range of from about 480°
C. to about 550°
C., a pressure in the ranger of from about 130 KPa to about 350 KPa, a weight hourly space velocity in the range of 1 to 150 hr-1, a catalyst-to-oil ratio in the range of 4 to 15, and a steam-to-feedstock ratio between 0.05-0.12;
1 by weight;wherein said catalyst is characterized as follows; (1) the anhydrous state formula of said ZRP zeolite is 0.01-0.30 RE2 O3 . 0.1-1.0 Na2 O . Al2 O3 . 20-60 SiO2 ; (2) said ZRP zeolite is in hydrogen-exchanged form; (3) 5-19% of said REY zeolite is in the form of RE2 O3, and the crystallite size of said REY zeolite is 0.5-10 microns. (4) the Na2 O content of said high silica Y zeolite does not exceed 4 wt%, and the crystallite size of said high silica Y zeolite is 0.5-10 microns; and (5) said matrix is an amorphous silica/alumina or silica/magnesia gel containing not more than 70 wt% SiO2.
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Specification