Catalyst composition for enhancing yield of olefins in fluid catalytic cracking process (FCC)

Patent metadata

Field	Value
Publication number	US-10894248-B2
Application number	US-201916528477-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Sep 13, 2018
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

The present invention provides a catalyst composition comprising rare earth exchanged USY zeolite (REUSY); pentasil zeolite; phosphorous compound; clay, silica, alumina, and spinel to enhance the catalytic activity and selectivity for light olefins in FCC operation conditions. The present invention also provides a process for the preparation of Light olefin enhancing catalyst composition with high propylene yield and coke selectivity.

First claim

The invention claimed is:

1. A composite catalyst composition, the composition comprising:
about 10-25 wt % rare earth exchanged USY zeolite (REUSY);
about 5-20 wt % pentasil zeolite;
about 2-8 wt % phosphorous compound;
about 20-45 wt % clay;
about 5-25 wt % silica;
about 10-35 wt % alumina; and
about 0.5 to 3 wt % mixed metal oxide selected from a group consisting of at least one metal of Group 11 and one metal of Group 13, and the wt % being based on total weight of the catalyst composition.

2. The composition as claimed in claim 1 , wherein the mixed metal oxide is a spinel.

3. The composition as claimed in claim 1 , wherein the mixed metal oxide is selected from a group consisting of at least one of copper, aluminium, and mixtures thereof.

4. The composition as claimed in claim 1 , wherein the pentasil zeolite is selected from a group consisting of ZSM-5 and ZSM-11.

5. The composition as claimed in claim 1 , wherein the REUSY comprises of 0.1 to 5 wt % of rare earth.

6. The composition as claimed in claim 1 , wherein the phosphorous compound is selected from a group consisting of at least one of mono-ammonium phosphate, di-ammonium phosphate, and phosphoric acid.

7. The composition as claimed in claim 1 , wherein the clay is selected from a group consisting of at least one of bentonite, attapulgite, and kaolinite.

8. The composition as claimed in claim 1 , wherein the silica is selected from at least one of sodium and ammonium stabilized colloidal silica with silica content varying in the range of 20-50 wt %.

9. The composition as claimed in claim 1 , wherein the alumina is selected from a group consisting of pseudoboehmite, boehmite, aluminum trihydrate, and gamma.

10. The composition as claimed in claim 1 , wherein the composite catalyst composition is in the form of at least one of pellet, extrude, tablet, and microsphere.

Assignees

• Indian Oil Corp Ltd

Inventors

• Kuvettu Mohan Prabhu
• Karthikeyani Arumugam Velayutham
• Chidambaram Velusamy
• LOGANATHAN Kumaresan
• Pulikottil Alex Cheru
• Mazumdar Sanjiv Kumar
• RAMAKUMAR Sankara Sri Venkata

Classifications

• B01J35/38

  Abrasion or attrition resistance · CPC title

• B01J35/51

  Spheres · CPC title

• C07C2523/72

  Copper · CPC title

• C10G2400/04

  Diesel oil · CPC title

• B01J37/0018

  Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat) · CPC title