PROCESS FOR PRODUCING LPG FROM A HEAVY HYDROCARBON FEED

• US 20180265796A1
• Filed: 09/15/2016
• Published: 09/20/2018
• Est. Priority Date: 09/30/2015
• Status: Active Grant

• Current Assignee: SABIC Global Technologies BV (Government of Saudi Arabia)
• Original Assignee: SABIC Global Technologies BV (Government of Saudi Arabia)
• Inventors: Aramburo, Luis, Farmer, Dustin, Stevenson, Scott A.
• Granted Patent: US 10,494,581 B2
• Time in Patent Office: Days
• CPC Class Codes: B01J 29/126 Y-type faujasite
• CPC Class Codes: B01J 35/643 less than 2 nm
• CPC Class Codes: C10G 2400/26 Fuel gas
• CPC Class Codes: C10G 2400/28 Propane and butane
• CPC Class Codes: C10G 47/18 the catalyst containing platinum group metals or compounds thereof
• CPC Class Codes: C10G 47/20 the catalyst containing other metals or compounds thereof
• CPC Class Codes: C10L 2290/06 Heat exchange, direct or indirect
• CPC Class Codes: C10L 3/12 Liquefied petroleum gas liquefying by pressure and cold treatment F25J

Abstract

The present invention relates to a process for producing LPG from a hydrocarbon feed comprising polyaromatics, the process comprising contacting said feed in the presence of hydrogen with a M/A/zeolite catalyst under hydrocracking process conditions.

Claims

1. A process for producing LPG from a heavy hydrocarbon feed comprising polyaromatics, the process comprising:

contacting the feed in the presence of hydrogen with a M/A/zeolite catalyst under process conditions comprising a pressure of 40-150 bara, a temperature of 350-500°

C., a WHSV of 0.1-10 h<sup>−

1</sup> and a H₂/HC ratio of 1-20,

wherein said M/A/zeolite catalyst comprises;

0.05-2.5 wt-% of element M, wherein said element M is one or more elements selected from Group 10 of the Periodic Table of Elements;

0.05-1 wt-% of element A, wherein said element A is one or more elements selected from Group 1 and 2 of the Periodic Table of Elements; and

an aluminosilicate zeolite having a pore size of 6-8 Å and

a SiO₂/Al₂O₃ ratio of 1-45.

2. The process according to claim 1, wherein the process conditions comprise a pressure of 50-100 bara.

3. The process according to claim 2, wherein the process conditions further comprise a temperature of 400-470°

C., a WHSV of 1-3 h<sup>−

1</sup> and a H₂/HC ratio of 3-10.

4. The process according to claim 1, wherein the M/A/zeolite catalyst comprises an aluminosilicate zeolite having a SiO₂/Al₂O₃ ratio of 5-40.

5. The process according to claim 1, wherein the M/A/zeolite catalyst comprises 0.5-2 wt-% of element M.

6. The process according to claim 1, wherein element M is one or more elements selected from the group consisting of Pd and Pt.

7. The process according to claim 1, wherein the M/A/zeolite catalyst comprises 0.1-1 wt-% of element A.

8. The process according to claim 1, wherein element A is one or more elements selected from the group consisting of Na, K, Rb and Cs.

9. The process according to claim 1, wherein the aluminosilicate zeolite has a 12-ring structure.

10. The process according to claim 1, wherein the aluminosilicate zeolite comprises super cages having a size of 12-14 Å

.

11. The process according to claim 1, wherein the aluminosilicate zeolite is zeolite Y.

12. The process according to claim 11, wherein the zeolite Y is partially dealuminated.

13. The process according to claim 1, wherein the hydrocarbon feed is selected from the group consisting of heavy cycle oil, light cycle oil, carbon black oil, cracked distillate and pyoil.