Conocophillips Company

Phillips 66 Company

Larry D Swinney

Sriram Ramani

Joe D Allison

Alfred E Keller

Nathan A Hatcher

Steven E Lusk

Gloria I Straguzzi

Kevin L Ricketson

Terry D Pruitt

Gilbert E Torres

Paul D Stewart

Kerri J Kirkendall

Jianhua Yao

Rafael Luis Espinoza

Xiaochun Xu

Harold A Wright

Dhananjay B Ghonasgi

Sergio R Mohedas

Daxiang Wang

David M Minahan

Tianyan Niu

Vincent H Melquist

Baili Hu

Todd H Harkins

Bang Cheng Xu

Jack E Cnossen

Rebecca S Shaver

Bang Chen Xu

This invention relates to a hydroprocessing process with improved catalyst activity when hydroprocessing petroleum based feedstock or an oxygen containing feedstock. This invention also relates to a hydrotreating process with improved hydrodesulfurization (HDS) activity of a hydrotreating catalyst such as Co/Mo by co-feeding carbon monoxide or its precursors. Such inventive process confirms that adding a small amount of CO to H2 in a hydrotreater for a few days leads to an increase in product sulfur due to the inhibition of CO on the hydrotreating catalyst such as Co/Mo. However, it has been unexpectedly found that after the CO was removed from the hydrogen stream, product sulfur levels decreased to values below they were before CO addition which means the activity of the hydrotreating catalyst increased after the CO treatment.

Hydroprocessing process with improved catalyst activity

A method and apparatus for converting a hydrocarbon and oxygen containing gas feed stream to a product stream, such as syngas, including catalytically partially oxidizing the hydrocarbon feed stream over a catalyst bed. The catalyst bed has a downstream zone which is less resistant to flow than the upstream zone.

Catalyst system for enhanced flow syngas production

Novel sulfur recovery plants, and processes utilizing these plants are disclosed. These apparatuses eliminate the use of a condenser between the waste heat boiler and first Claus catalytic reactors, and also eliminate the use of reheaters in between Claus catalytic reactors.

Sulfur recovery plant

A compact sulfur recovery system is disclosed which includes an upflow orientation for the gases through a primary structure including a catalytic partial oxidation reaction zone, a first temperature-control zone, a first Claus catalytic reaction zone, a second temperature-control zone, a first liquid sulfur outlet, and a first effluent gas outlet. The upward flow of the gases puts the hottest gases in contact with the tubes and tube sheet in the waste heat boiler where there is greater confidence in having liquid water in most continuous therewith.

Compact sulfur recovery plant and process

Claus sulfur recovery plants that include one or more single-stage or multi-stage compact tubular Claus catalytic reactor-heat exchanger units are disclosed. In some instances, these new or improved Claus plants additionally include one or more compact heat exchanger containing cooling tubes that are filled with a heat transfer enhancement medium. The new compact tubular Claus catalytic reactor-heat exchanger units and HTEM-containing heat exchangers are also disclosed. A process for recovering sulfur from a hydrogen sulfide-containing gas stream, employing the new tubular Claus catalytic reactor-heat exchanger unit, and in some instances a HTEM-containing heat exchanger, are also disclosed.

Increased capacity sulfur recovery plant and process for recovering elemental sulfur

The invention relates to methods for prevention of and recovery from a catalyst bed slumping in a gas-agitated multiphase hydrocarbon synthesis reactor, while the reactor is either under non-reactive conditions or under reaction promoting conditions when syngas is converted to products. The reactor contains a catalyst bed comprising catalyst particles and a gas injection zone suitable for injecting a reactor gas feed. A method for preventing bed slumping comprises supplying a supplemental gas to the gas-agitated multiphase reactor to prevent the catalyst bed from slumping due to insufficient reactor gas feed flow. The method may include recycling some or all of the supplemental gas to the reactor. The method may further comprise separating the gas injection zone from the catalyst bed with a porous plate so as to prevent migration of catalyst particles into the gas injection zone and to minimize plugging of gas distributor(s) present in said zone.

Prevention of and recovering from a catalyst bed slumping in a gas-agitated multiphase reactor

A compact sulfur recovery system is disclosed which comprises a primary structure including a catalytic partial oxidation reaction zone, a first temperature-control zone, a first Claus catalytic reaction zone, a second temperature-control zone, a first liquid sulfur outlet, and a first effluent gas outlet. In some embodiments, a secondary structure follows the primary structure and comprises a second Claus catalytic reaction zone, a third temperature-control zone, a second liquid sulfur outlet, and a second effluent gas outlet. One or more components of the system employ heat transfer enhancement material in the temperature-control zones, and one or more components deter accumulation of liquid sulfur in the Claus catalytic reaction zones. A process for recovering elemental sulfur from hydrogen sulfide-containing gas streams comprises regulating the temperature of certain components to favor the partial oxidation reaction, and the Claus reaction, as appropriate, and deters pooling of liquid sulfur on the Claus catalyst(s).

Lanthanide-promoted rhodium-containing supported catalysts that are active for catalyzing the net partial oxidation of methane to CO and Hare disclosed, along with their manner of making and high efficiency processes for producing synthesis gas employing the new catalysts. A preferred catalyst comprises highly dispersed, high surface area rhodium on a granular zirconia support with an intermediate coating of a lanthanide metal and/or oxide thereof and is thermally conditioned during catalyst preparation. In a preferred syngas production process a stream of methane-containing gas and Ois passed over a thermally conditioned, high surface area Rh/Sm/zirconia granular catalyst in a short contact time reactor to produce a mixture of carbon monoxide and hydrogen.

Lanthanide-promoted rhodium catalysts and process for producing synthesis gas

A method and apparatus for converting a hydrocarbon and oxygen containing gas feed stream to a product stream, such as syngas, including catalytically partially oxidizing the hydrocarbon feed stream over a catalyst bed. The catalyst bed has a downstream section which is less resistant to flow than the upstream section.

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Stillwater, OK, United States of America

Larry D Swinney