Composition and process for preparation of cracking catalyst suitable for enhancing yields of light olefins

Patent metadata

Field	Value
Publication number	US-10413889-B2
Application number	US-201615237157-A
Country	US
Kind code	B2
Filing date	Aug 15, 2016
Priority date	Nov 24, 2015
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

The present invention relates to a fluid catalytic cracking additive composition for cracking of heavy hydrocarbon feed stocks and process for preparing the additive. The additive is suitable for enhancing yields of light olefins such as propylene, isobutylene, LPG and reduces the bottom yields. The invention specifically relates to a fluid catalytic cracking additive composition comprising a pentasil zeolite, zeolites having pore size in a range of 5.4-7.7 Å, alumina, colloidal silica, kaolin clay, and phosphate, wherein the zeolites having pore size in the range of 5.4-7.7 Å is present in an amount of 1 to 10 wt % with respect to the total amount of the pentasil zeolite and zeolite having the pore size in the range of 5.4-7.7 Å.

First claim

We claim:

1. A fluid catalytic cracking additive composition comprising of 1-50 wt % pentasil zeolite, 0.01-2.5 wt % of zeolite having a pore size in a range of 5.4-7.7 Å, 0-15 wt % alumina, 5-20 wt % colloidal silica; 10-60 wt % kaolin clay; and 5-15 wt % phosphate, with respect to the amount of the fluid catalytic cracking additive composition, wherein the zeolite having pore size in the range of 5.4-7.7 Å is selected from the group consisting of beta zeolite, mordenite zeolite and ferrirete zeolite.

2. The fluid catalytic cracking additive composition of claim 1 , wherein the pentasil zeolite and zeolite having the pore size in the range of 5.4-7.7 Å have silica to alumina ratio ranging from 8 to 500.

3. The fluid catalytic cracking additive composition of claim 1 wherein the zeolite having the pore size in the range of 5.4-7.7 Å is present in an amount of 1 to 10 wt % with respect to the total amount of the pentasil zeolite and zeolite having the pore size in the range of 5.4-7.7 Å.

4. The fluid catalytic cracking additive composition of claim 1 wherein the pentasil zeolite is selected from a group consisting of ZSM-5 Zeolite, ZSM-11 Zeolite, ZSM-12 Zeolite, ZSM-22 Zeolite, ZSM-23 Zeolite, and ZSM-35 Zeolite.

5. The fluid catalytic cracking composition of claim 1 wherein the pentasil zeolite is ZSM-5 and the zeolite having the pore size in a range of 5.4-7.7 Å is beta zeolite.

6. The fluid catalytic cracking additive composition of claim 1 , wherein the fluid catalytic cracking additive composition is shaped in micro-spheroidal particles having an average particle size of 80-100 micron, an ABD above 0.75 g/cm 3 , and an attrition index below 5.

Assignees

• Indian Oil Corp Ltd

Inventors

• Kadgaonkar Mahesh
• Sarkar Biswanath
• Pulikottil Alex Cheru
• Chidambaram Velusamy
• Karthikeyani Arumugam Velayutham
• Kuvettu Mohan Prabhu
• Choudhury Shiba Prasad
• Christopher Jayaraj
• Kumar Brijesh
• Das Biswapriya

Classifications

• C10G11/05

  Crystalline alumino-silicates, e.g. molecular sieves · CPC title

• B01J29/48

  containing arsenic, antimony, bismuth, vanadium, niobium tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium · CPC title

• B01J2229/36

  Steaming · CPC title

• C10G11/18

  according to the "fluidised-bed" technique · CPC title

• B01J2229/186

  not in framework positions · CPC title