Lyondell Chemical Technology, L.p.

Lyondellbasell Acetyls, LLC

Basell Poliolefine Italia S.r.l.

Lyondellbasell Acetyis, LLC

Daniel F White

David L Ramage

Noel C Hallinan

Beaven S Mandimutsira

Brian A Salisbury

Lei Zhang

Sandor M Nagy

Xueyong Yang

Christopher D Smith

Diego Brita

David John Cole-Hamilton

John D Hearn

Robert J Rebman

Sarthak Gaur

Mure Te

Shahram Mihan

Simona Guidotti

Dario Liguori

Barbara Kimmich

Walter S Dubner

Pranit S Metkar

Debra L Jackson

Jared T Fern

Ine Boogaerts

Roberto Alvarez

Chelsee A Arceneaux

Sheri E Davis

Roger A Grey

David W Leyshon

Ilya Nifant'ev

Volker Fraaije

Pavel V Ivchenko

Wilfred P Shum

Jamie Allen Hestekin

Ha H Nguyen

Majid Keyvani

Ilya E Nifant'ev

Linn Fang

Jenny M Oran Osment

Andrew K Kuikman

Robert Bruce Maskell

Yulenty Deal

Dmytro Demydov

Joseph P Longtin

Ryan J Mathews

Robert John Rebman

Beaven Mandimutsira

Methods of depolymerizing polyolefin-based material into useful petrochemical products using styrene oligomers or polymers, and heat are described. The styrene oligomers or polymers improve the depolymerization reaction by decreasing the halftime for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

Styrene-assisted depolymerization of polyolefins

Disclosed herein is a process for upgrading a raffinate butene (C4 Raffinate) stream to propylene which can produce polymer grade propylene (PGP) by a metathesis process, without consuming fresh ethylene as a feedstock. By recycling ethylene byproduct in the metathesis equilibrium, propylene selectivity can be further improved without negatively impacting butene conversion. Additionally, upon PGP separation, this technology can provide an effluent acceptable for alkylate production by achieving a balanced butene conversion and heavies coproduction. The disclosed process is a relatively low temperature process which can be deployed as a drop-in option for conventional ethylene/butene metathesis unit and provide additional flexibility to existing operations to balance the supply and demand of C2-C4 light olefins.

Process for converting raffinate butenes to propylene

Catalytic compositions for depolymerizing polyolefin-based waste material into useful petrochemical products and methods of use are described. The compositions are a composite of at least one zeolite catalyst with one or more co-catalyst(s) that is a solid inorganic material. These composite catalysts, along with heat, are used to both increase the depolymerization reaction rate of the feed streams and suppress poisoning effects of non-polyolefin polymers that may be present. This results in a shorter residence time in the depolymerization unit and more efficient process.

Composite catalyst for polyolefin depolymerization

Methods of converting isobutylene to C5+ compounds. The methods may include contacting isobutylene with a skeletal isomerization catalyst to provide a mixture of Colefins, and then contacting the mixture of Colefins with a metathesis catalyst to convert the mixture of Colefins to a product mixture. The product mixture may include Colefins.

Methods for isobutylene conversion to C5+ compounds

Methods of depolymerizing polyolefin-based material into useful petrochemical products using supported metal oxides and heat are described. The supported metal oxides improve the depolymerization reaction by decreasing the half time for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

Supported metal oxides as depolymerization catalysts

A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of methylcyclohexane as a reaction solvent and a catalyst system comprising a rhodium complex and a substituted or unsubstituted diphosphine ligand. The use of the methylcyclohexane increases the reaction rate while also giving a high yield of 4-hydroxybutyraldehyde compared to 3-hydroxy-2-methylpropionaldehyde and improving the separation of the hydroxyaldehyde products from the catalyst system.

Methylcyclohexane as allyl alcohol hydroformylation solvent

Methods of depolymerizing polyolefin-based material into useful petrochemical products using metal oxides and heat are described. The metal oxides improve the depolymerization reaction by decreasing the onset temperature for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

Polyolefin depolymerization with metal oxides

A process of co-feeding gaseous ethylene with liquid allyl alcohol in the presence of a catalyst to produce 1,4-butanediol and n-propanol may include: introducing a gaseous mixture of ethylene, carbon monoxide and hydrogen into a reactor in the presence of a hydroformylation catalyst in a solvent; introducing liquid allyl alcohol (AA) into the reactor; and carrying out hydroformylation reaction at a temperature between 50 and 100&#xb0; C. to obtain hydroformylation products.

Co-feeding ethylene with allyl alcohol in hydroformylation to make 1,4-butanediol and n-propanol

Methods of improving the selectivity of selective hydrogenation of residual 1,3-butadiene in a C4 fraction of a hydrocarbon raffinate stream in a fixed-bed reactor are described. The methods may include co-feeding a competitive chemical species that increases the mechanistic selectivity to 1- and 2-butenes while increasing isomerization selectivity to 2-butene in the product stream. The hydrogenation reactor and competitive chemical species conditions may be tailored to selectively produce butenes over butane or iso-butane, where the butenes comprise 1-butene and/or 2-butene.

Process for hydrogenation of 1,3-butadiene

A process of producing allyl alcohol by reacting glycerin with ReO&#x2014;AlOin the presence of gamma-valerolactone (GVL) in a reactor is described. More specifically, a process to produce allyl alcohol, comprising the step of: a) reacting glycerin with ReO&#x2014;AlOin the presence of an inert solvent, GVL, in a reactor, and b) collecting the product comprising allyl alcohol.

Glycerin-only reaction for allyl alcohol production

A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.

Plastic depolymerization using halloysite

Methods of drying streams that include propylene oxide. The methods may include contacting a stream that includes propylene oxide with molecular sieves. The molecular sieves may be in a drying unit, and may be regenerated. The streams that include propylene oxide may include one or more other organic compounds.

Methods of drying propylene oxide

Electrodeionization apparatuses, systems including a reactor system and an electrodeionization system, and methods of purifying acetic acid are provided herein. In some embodiments, the electrodeionization apparatus includes an anode, and three spaced apart membranes located between the anode and the cathode: a first cation exchange membrane, a first anion exchange membrane, a second cation exchange membrane, defining: a first electrode rinse passage between the anode and the first cation exchange membrane, a first concentrate passage between the first cation exchange membrane and the first anion exchange membrane, a feed stream passage located between the first anion exchange membrane and the second cation exchange membrane, and a second electrode rinse passage between the second cation exchange membrane and the cathode. In some embodiments, the electrodeionization apparatus also includes at least one propionate-selective ion exchange resin wafer within the feed stream passage.

Method and apparatus for wafer enhanced electrodeionization of acid streams

Provided are methods of treating a mixture, such as a hydrocarbon mixture, that includes one or more C2-C4 carbonyl containing organic compounds. The methods may include contacting a hydrocarbon mixture with an aqueous liquid including an agent. The agent may reduce the amount of one or more C2-C4 carbonyl containing organic compounds in the mixture.

Methods of removing carbonyl-containing organic compounds

Methods of reducing a phosphorus content of a liquid hydrocarbon. The liquid hydrocarbon may be co-fed with an olefin to an alkylation unit to produce a low-phosphorus content liquid hydrocarbon product.

Phosphorus removal and alkylate production

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Houston, TX, United States of America

Daniel F White