Shell Oil Comapny

Shell USA, Inc.

David A Van Kleeck

Howard L Fong

Wayne Errol Evans

Jesse Raymond Black

Roel Guillaume Hubertus Leonardus Bastings

Gregory John Ward

John M Harryman

Donald E Hardesty

Steven J Swanson

The invention provides a reaction system for the production of ethylene carbonate and/or ethylene glycol. The system having a guard bed system upstream of a catalytic EO reactor. The guard bed system having a feed line supplying a gaseous feed to be treated and an effluent line configured to remove the treated gaseous feed. The guard bed system has two or more guard bed vessels arranged in series in sequential order, each having an inlet, a bed of guard bed material and an outlet. The inlet of each guard bed vessel is attached by means of valves to both the feed line and the outlet of the guard bed vessel preceding it in sequential order. The outlet of each guard bed vessel is attached by means of valves to both the effluent line and to the inlet of the guard bed vessel following it in sequential order.

Guard bed system and process

The invention provides a reaction system for the production of ethylene carbonate and/or ethylene glycol. The reaction system having a guard bed system upstream of a catalytic EO reactor. The guard bed system having a feed line supplying a gaseous feed and an effluent line configured to remove the treated gaseous feed. The guard bed system has two or more guard bed vessels arranged in series in sequential order, each having an inlet, a bed of guard bed material and an outlet. The inlet of each guard bed vessel is attached by means of valves to both the feed line and the outlet of the guard bed vessel preceding it in sequential order. The outlet of each guard bed vessel is attached by means of valves to both the effluent line and to the inlet of the guard bed vessel following it in sequential order.

A process and apparatus for rapid stripping of fluid cracking catalyst is disclosed. A series of concentric annular beds provide rapid initial removal of hydrocarbons from the interstices of the catalyst particles. Successive stages of stripping allow time for hydrocarbon diffusion from catalyst's pores while maintaining low hydrocarbon partial pressure. Residence times increase as the catalyst passes to the different catalyst beds.

Stage catalyst concentric annular stripper

A process for the removal of H.sub.2 S from sour gaseous streams is disclosed in which the sour gaseous stream is contacted with a solution containing solubilized iron chelates of a specified organic acid or acids. The contacting is carried out in first and second contacting zones, the first being a gas-solution mixture formation zone and the second comprising a plurality of contacting sections adapted to provide reaction of the H.sub.2 S in the sour gaseous stream with the iron in the contacting solution without plugging due to deposition of sulfur.

Solution removal of H.sub.2 S from gas streams

A process and apparatus for the removal of H.sub.2 S from sour gaseous streams is disclosed in which the sour gaseous stream is contacted with an aqueous reactant solution containing solubilized iron chelates. The contacting is carried out in first and second contacting zones, the first being a continuous liquid phase mixture formation zone and the second comprising a plurality of contacting sections adapted to provide reaction of the H.sub.2 S in the sour gaseous stream with the iron in the contacting solution by producing an upwardly flowing continuous liquid phase mixture comprising sour gas dispersed in the aqueous reactant solution.

Removal of H.sub.2 S from gas streams

Froth or foam sulfur particle accumulation during the recovery of sulfur particles from a zone containing regenerated redox solution is reduced by agitating and removing the sulfur slurry in a plurality of streams, including at least one stream at a short distance from the top of the solution in the zone and at least one stream from the bottom of the zone and optionally recombining the streams after removal.

Sulfur removal process

A process for the removal of H.sub.2 S from sour gaseous streams is disclosed in which the sour gaseous stream is contacted with a solution containing solubilized iron chelates of nitrilotriacetic acid. The contacting is carried out in first and second contacting zones, the first being a gas-solution mixture formation zone and the second comprising a plurality of contacting sections adapted to provide reaction of the H.sub.2 S in the sour gaseous stream with the iron in the contacting solution without plugging due to deposition of sulfur.

Growing community of inventors

Houston, TX, United States of America

David A Van Kleeck