Stone & Webster Engineering Corp.

Lummus Technology Inc.

Abb Lummus Global Inc.

Other

Basf Corporation

Abb Lummus Crest, Inc.

Catalytic Distillation Technologies

Sud-chemie Inc.

Stone & Webster Process Technology, Inc.

Robert J Gartside

Herman N Woebcke

Axel R Johnson

Marvin I Greene

Bala Ramachandran

Richard C Norton

Sukwon Choi

Thomas Skourlis

Arju H Bhojwani

Peter Robert Ponzi

Joseph L Ross

Shane Kleindienst

Erwin M J Platvoet

Dennis A Duncan

Francesco Bertola

Hassan Kaleem

Wolfgang Friedrich Ruettinger

Paul John Chapman

Charles Sumner

Saeed Alerasool

Thulasidas Chellppannair

Robert Haines

Thulusidas Chellppannair

Lawrence L Murrell

Gary R Gildert

Robert John Brummer

Stephen J Stanley

Michael A Urbancic

Ali M Khonsari

Robert E Trubac

Shaun McGovern

Frank McCarthy

Michael W Balakos

Cemal Ercan

Kandasamy M Sundaram

Charles Summer

Atef M Shaban

Edwin J Bassler

Quincy J Jones

Shaun M McGovern

Robert I Haines

Shane R Kleindienst

Shaun M Mcgovern

Thomas P Skourlis

A process for the double-bond isomerization of olefins is disclosed. The process may include contacting a hydrocarbon stream including olefins with a &#x3b3;-alumina-titania isomerization catalyst to convert at least a portion of the olefin to its positional isomer. The &#x3b3;-alumina-titanic isomerization catalysts disclosed herein may also have the activity to convert alcohol into additional olefins, while having increased resistance to oxygenate poisons.

Olefin double bond isomerization catalyst with high poison resistance

A process for the double-bond isomerization of olefins is disclosed. The process may include contacting a hydrocarbon stream including olefins with a &#x3b3;-alumina-titania isomerization catalyst to convert at least a portion of the olefin to its positional isomer. The &#x3b3;-alumina-titania isomerization catalysts disclosed herein may also have the activity to convert alcohol into additional olefins, while having increased resistance to oxygenate poisons.

Disclosed herein is a method of controlling the air to fuel ratio in a burner containing a venturi assembly. The venturi includes an air inlet, a primary fuel inlet with a converging section, a throat portion downstream from the converging section, a diverging section downstream from the throat portion, an outlet, and a secondary gas inlet disposed downstream from the converging section and upstream from the outlet. The method comprises introducing fuel into the fuel inlet, receiving air through the air inlet by inspiration, and feeding a gas through the secondary gas inlet, the flow rate and content of the gas fed through the secondary gas inlet being selected to result in a desired air to fuel ratio through the outlet. A method of firing a heater, a burner, a furnace and firing control systems also are disclosed.

Method, system and apparatus for firing control

A process for producing propylene is disclosed, including: fractionating a mixed C4 hydrocarbon stream to recover a first fraction comprising isobutene and a second fraction comprising 2-butene; contacting the first fraction with a first metathesis catalyst in a first metathesis reaction zone; recovering an effluent from the first metathesis reaction zone comprising at least one of ethylene, propylene, unreacted isobutene, C5 olefins, and C6 olefins; contacting the second fraction and the ethylene in the effluent with a second metathesis catalyst in a second metathesis reaction zone; recovering an effluent from the second reaction zone comprising at least one of unreacted ethylene, propylene, unreacted 2-butene, fractionating the effluent from the first metathesis reaction zone and the effluent from the second metathesis reaction zone to recover an ethylene fraction, a propylene fraction, one or more C4 fractions, and a fraction comprising at least one of C5 and C6 olefins.

Propylene via metathesis with low or no ethylene

Disclosed herein is a process for producing an alpha olefin comprising obtaining a feed stream comprising an internal olefin having a first carbon number and an alpha olefin having a first carbon number, isomerizing the feed stream to increase the quantity of the alpha olefin, fractionating, subjecting the overhead material from fractionation to catalytic metathesis to produce a mixed olefin effluent comprising an internal olefin having a second carbon number and other hydrocarbons, fractionating, preparing the first isomerization reactor and fractionator to receive the olefin having a second carbon number, isomerizing the internal olefin intermediate in the prepared first isomerization reactor, and fractionating the second isomerization effluent in the prepared first fractionator to separate the alpha olefin having the second carbon number from the internal olefin having the second carbon number. A corresponding system also is disclosed, along with a heat pump that can be incorporated into the process.

Batch process and system for the production of olefins

A process for the double-bond isomerization of olefins is disclosed. The process may include contacting a fluid stream comprising olefins with a fixed bed comprising an activated basic metal oxide isomerization catalyst to convert at least a portion of the olefin to its isomer. The isomerization catalysts disclosed herein may have a reduced cycle to cycle deactivation as compared to conventional catalysts, thus maintaining higher activity over the complete catalyst life cycle.

Catalyst for metathesis of ethylene and 2-butene and/or double bond isomerization

A process for the production of propylene, the process including: contacting ethylene and a hydrocarbon stream comprising 1-butene and 2-butene with a bifunctional isomerization-metathesis catalyst to concurrently isomerizes 1-butene to 2-butene and to form a metathesis product comprising propylene; wherein the bifunctional isomerization-metathesis catalyst comprises: a catalyst compound may include at least one element selected from tungsten, tantalum, niobium, molybdenum, nickel, palladium, osmium, iridium, rhodium, vanadium, ruthenium, and rhenium for providing metathesis activity on a support comprising at least one element from Group IA, IIA, IIB, and IIIA of the Periodic Table of the Elements; wherein an exposed surface area of the support provides both isomerization activity for the isomerization of 1-butene to 2-butene; and reactive sites for the adsorption of catalyst compound poisons. In other embodiments, the catalyst compound may include at least one element selected from aluminum, gallium, iridium, iron, molybdenum, nickel, niobium, osmium, palladium, phosphorus, rhenium, rhodium, ruthenium, tantalum, titanium, tungsten, and vanadium.

Olefin isomerization and metathesis catalyst

Described herein is a process for producing an alpha olefin by obtaining a feed stream of internal olefins having a first carbon number and alpha olefins having a first carbon number. The olefins are isomerized to increase the quantity of the alpha olefins. The olefins are then fractionated, subjecting the overhead material to catalytic metathesis to produce a mixed olefin effluent of internal olefins having a second carbon number and other hydrocarbons. The first isomerization reactor and fractionator are prepared to receive the olefins having a second carbon number, where the internal olefin intermediate is isomerized in the prepared first isomerization reactor. The second isomerization effluent is fractionated in the prepared first fractionator to separate the alpha olefins having the second carbon number from the internal olefins having the second carbon number. A corresponding system is also described, along with a heat pump that may be incorporated into the process.

Disclosed is a process for the production of C2 to C3 olefins via the catalytic cracking of feedstocks including C4 and heavier olefins in an integrated reaction/regeneration system.

Process for the production of olefins

Disclosed herein is a process for producing isoprene that includes reacting a mixed Cmetathesis feed stream comprising isobutylene and at least one of 1-butene and 2-pentene in a first metathesis reactor in the presence of a first metathesis catalyst under conditions sufficient to produce an intermediate product stream comprising at least 30 wt. % 2-methyl-2-pentene based upon the olefin content of fresh feed in the mixed Cfeed stream, and at least one of ethylene and propylene, separating the 2-methyl-2-pentene, subjecting the separated 2-methyl-2-pentene to pyrolysis to produce a reaction product stream comprising isoprene, and separating the isoprene into an isoprene product stream using fractionation. A system used in producing isoprene is also disclosed.

Process and system for the production of isoprene

A process for the production of propylene, the process including: fractionating a hydrocarbon stream comprising n-butenes, isobutylene, and paraffins into at least two fractions including a light Cfraction comprising isobutylene and a heavy Cfraction comprising n-butenes and paraffins; contacting at least a portion of the heavy Cfraction with a metathesis catalyst to form a metathesis product comprising ethylene, propylene, Colefins, and paraffins; fractionating the metathesis product into at least four fractions including an ethylene fraction, a propylene fraction, a Cfraction comprising Colefins and paraffins, and a Cfraction; cracking the light Cfraction and the Cfraction to produce a cracking product comprising ethylene, propylene, and heavier hydrocarbons; and fractionating the cracking product into at least two fractions including a light fraction comprising propylene and a fraction comprising Cto Chydrocarbons.

Integrated propylene production

Growing community of inventors

Summit, NJ, United States of America

Robert J Gartside