Unlock instant, AI-driven research and patent intelligence for your innovation.

Gasoline sulfur reduction in fluid catalytic cracking

A technology for catalytic cracking and cracking catalyst, applied in the direction of catalytic cracking, physical/chemical process catalyst, cracking, etc., can solve the problem that the sulfur content is not greatly reduced, and achieve the effect of increasing removal and improving the effect of sulfur reduction

Inactive Publication Date: 2007-09-05
WR GRACE & CO CONN +1
View PDF23 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But again, the sulfur content of the product has not been greatly reduced
[0012] Wormsbecher and Kim proposed a catalyst additive for reducing the sulfur content in liquid cracked products in U.S. Patents 5,376,608 and 5,525,210, using alumina-supported Lewis acid as a cracking catalyst additive for the production of low-sulfur gasoline, but this system has not yet been used in great commercial success

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] (in Al 2 o 3 Preparation of 2% vanadium and 5% vanadium on support)

[0086] By making pseudo boehmite (psuedoboehmite) Al with HCl 2 o 3 The slurry was peptized, ground with a Drais attritor, and the ground slurry was spray-dried to prepare spray-dried Al 2 o 3 particles. The resulting spray-dried alumina was calcined at 800°C for 1 hour.

[0087] The spray-dried and calcined Al 2 o 3 Incipient wetness is achieved by immersion in an aqueous solution of vanadium oxalate. The concentration of vanadium oxalate in the solution was adjusted to yield V concentrations of 2% by weight and 5% by weight on alumina.

[0088] The impregnated alumina was dried at 100°C and then calcined at 540°C for 2 hours.

Embodiment 2

[0090] (in Al 2 o 3 Preparation of 6% V on the carrier)

[0091] Spray-dried, calcined Al prepared as described in Example 1 2 o 3 Incipient wetness is achieved by immersion in an aqueous solution of vanadium sulfate. The concentration of vanadium sulfate in the solution was adjusted to yield a V concentration of 6% by weight on alumina.

[0092] The impregnated mass was dried at 120°C. The final material was analyzed by ICP and found to contain 5.4 wt% V, 0.1 wt% Na 2 O, 11% SO 4 . use N 2 - BET determined surface area of ​​39m 2 / g.

Embodiment 3

[0094] (on SiO 2 - Preparation of 2.0% V on clay support)

[0095] Silica hydrogel (280-350m 2 / g, 30-35% solids and 8.0-8.5pH) were slurried in distilled water and sanded to obtain a slurry containing 14.8% by weight solids. For 13,514g of ground silica hydrogel slurry, 2500g of Nalco Grade 1140 colloidal SiO 2 A mixture with 2353 g of Natka clay was Drais ground and spray dried. The spray-dried samples were then calcined at 700 °C for 40 minutes.

[0096]300 g of the calcined, spray-dried sample was impregnated in an aqueous solution of vanadium sulfate to obtain 2% by weight of V. After impregnation, the samples were dried at 120°C. The final material was analyzed by ICP and found to contain 2.0 wt% V, 0.39 wt% Na 2 O, 4.2% SO 4 . use N 2 - BET determined surface area of ​​115m 2 / g.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

The sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction additive comprising a non-molecular sieve support containing a high content of vanadium. Preferably, the support is alumina. The sulfur reduction catalyst is used in the form of a separate particle additive in combination with the active catalytic cracking catalyst (normally a faujasite such as zeolite Y) to process hydrocarbon feedstocks in the fluid catalytic cracking (FCC) unit to produce low-sulfur gasoline and other liquid products.

Description

field of invention [0001] This invention relates to the reduction of sulfur in gasoline and other petroleum products produced by catalytic cracking. The present invention provides a catalytic composition for reducing product sulfur and a method for reducing product sulfur using the composition. [0002] Cross-references to related applications [0003] This application is a continuation-in-part of Application Serial No. 09 / 399,637 filed September 20,1999. [0004] This application is related to Application Serial No. 09 / 144,607 filed August 31,1998. [0005] This application is also related to Application Serial Nos. 09 / 221,539 and 09 / 221,540, both filed December 28,1998. Background of the invention [0006] Catalytic cracking is a large-scale commercial oil refining process. The majority of US refinery gasoline blending pools are produced by this method, almost all by fluid catalytic cracking (FCC). In catalytic cracking, heavy hydrocarbon fractions are converted to li...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/05C01B17/60B01J21/16B01J23/22B01J29/16C10G11/04
CPCC10G11/05C10G2400/02
Inventor T·G·罗贝里R·库马M·S·兹巴斯W·-C·程X·赵N·博雷
Owner WR GRACE & CO CONN