Hydrogenation reactor and process

Patent metadata

Field	Value
Publication number	US-9902668-B2
Application number	US-201414916377-A
Country	US
Kind code	B2
Filing date	Aug 29, 2014
Priority date	Sep 6, 2013
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A reactor and process for removing unsaturated alkynes and diolefinic impurities from olefins and oxygenates.

First claim

What is claimed is:

1. A reactor suitable for use in a hydrogenation process, the reactor comprising:
a. a catalyst bed comprising a tube for cooling the catalyst bed;
b. a plurality of inlets for conveying a feed material to the catalyst bed; and
c. one or more outlets,
wherein the catalyst bed comprises a catalyst having a surface area of from about 15 m 2 /g to about 650 m 2 /g, and wherein the reactor can provide a space velocity of from about 500/h to about 50,000/h for hydrogenation reactions.

2. The reactor of claim 1 , further comprising one or more distributors for distributing the feed material uniformly or substantially uniformly across the catalyst bed.

3. The reactor of claim 1 , wherein the catalyst bed is a fixed bed comprising a selective hydrogenation catalyst.

4. The reactor of claim 1 , wherein the catalyst bed is positioned in contact with one or more catalyst bed supports.

5. The reactor of claim 1 , being a hydrogenation reactor comprising a plurality of inlets for an olefin feed, an oxygenate feed, or a combination thereof.

6. The reactor of claim 1 , further comprising a drip trap for recovering a condensate and/or a green oil.

7. The reactor of claim 1 , further comprising one or more thermowells disposed between an exterior surface of the reactor and the catalyst bed.

8. The reactor of claim 1 , wherein the catalyst has a surface area of from about 30 m 2 /g to about 650 m 2 /g.

9. The reactor of claim 1 , having a space velocity of at least about 25,000/h.

10. The reactor of claim 1 , having a high space velocity, a pressure drop from about 0.05 bar to about 100 bar, a uniform distribution of feed material across the catalyst bed, or a combination thereof.

11. A reactor system comprising a plurality of the reactor of claim 1 , arranged in a series configuration.

12. A reactor system comprising a plurality of the reactor of claim 1 , arranged in a parallel configuration.

13. A method for a hydrogenation process, the method comprising introducing a feed material to the reactor of claim 1 through the plurality of inlets, such that the feed material uniformly or substantially uniformly contacts the catalyst bed to produce a hydrogenation reaction product.

14. The method of claim 13 , wherein the feed material comprises acetylene, and wherein the reaction product comprises an alkene.

15. The method of claim 13 , wherein the reactor exhibits a pressure drop of from about 0.05 to about 100 bar.

16. The method of claim 13 , wherein the reactor provides improved control over runaway reactions, as compared to a conventional reactor.

17. The method of claim 13 , wherein a plurality of the reactor are connected in a series configuration to provide a front-end acetylene removal system.

18. The method of claim 13 , wherein a plurality of the reactor are connected in a parallel configuration to provide a back-end acetylene removal system.

Assignees

• Saudi Basic Ind Corp

Inventors

• Nawaz Zeeshan
• Baksh Faisal

Classifications

• B01J2208/00557

  controlling the residence time inside the reactor vessel · CPC title

• C07C5/3337

  of the platinum group · CPC title

• C10G2300/4018

  Spatial velocity, e.g. LHSV, WHSV · CPC title

• C07C5/333 Primary

  Catalytic processes · CPC title

• B01J2208/00132

  Tubes · CPC title