Standard Oil Company (indiana)

The Standard Oil Company

Amoco Corporation

Edwin F Peters

James L Jezl

Robert D Hall

John W Shepard

Michael J Spangler

Marvin R Klotz

Glenn O Michaels

David E Boone

An apparatus is provided for introducing a mixture of dry catalyst and a hydrocarbon liquid into a polymerization reactor vessel. The apparatus comprises a enclosed mixing tank with rotating mixing blades and a rotatable shot valve spaced below the mixing tank. The shot valve can be rotated from a first position in communication with an opening in the lower portion of the mixing tank to a second position in communication with a hydrocarbon feed conduit that provides hydrocarbon liquid to the polymerization reactor vessel. A bypass conduit is provided for introducing hydrocarbon liquid from the hydrocarbon feed conduit into the mixing tank wherein the interior of the mixing tank is maintained at the same pressure as the hydrocarbon feed conduit.

Catalyst feeding system

A process to convert an alkene to oligomerized, aromatized and isomerized products comprises contacting such alkene under conversion conditions with an AMS-1B borosilicate catalyst composition.

Alkene conversion using AMS-1B crystalline borosilicate

Apparatus and process is herein disclosed by which a polymerizable monomer or mixture thereof can be economically and efficiently converted to polymeric substances with a high yield catalyst and, optionally, co-catalyst by a vapor phase, essentially isobaric, polymerization process using a horizontal, stirred-bed, quench-cooled, essentially total reactor off-gas recycle reactor.

Horizontal reactor for the vapor phase polymerization of monomers

Apparatus for the vapor phase polymerization of at least one polymerizable monomer comprising:

A process for drying polymer slurry produced in slurry or bulk phase polymerization comprising removing, in a gas stream which contains polymerizable monomer, easily vaporizable liquid components from a stirred drying zone containing a large, in comparison with the volume of slurry from said polymerization added to said zone, amount of solid polymer particulate to form substantially dry polymer particulate using in essential part polymerization heat generated in said zone by carrying out therein a fraction of the overall amount of polymerization. The resulting polymer can be finished conventionally or by transferring said particulate to a melting zone in which an easily transferable polymer melt is formed, said melting accomplished in substantial part using polymerization heat generated in said melting zone by a fraction of the overall amount of polymerization.

Drying and finishing operations in slurry or bulk phase polymerization

Adding a finely divided oxide to a terminal olefin polymerization catalyst comprising a hydrocarbon-soluble transition metal compound and a Group II or III metal organic compound reduces the amount of fibrous polymer produced.

Elimination of fibrous polymers

Simultaneous precise addition of a plurality of non-compatible substances to a mixing zone is achieved by forming a dispersion containing the non-compatible substances and subsequently injecting the dispersion into such zone.

Method for simultaneous addition of non-compatible substances to a

An essentially total reactor off-gas recycle process essentially isobaric in nature is herein disclosed for use in polymerizations wherein a polymerizable monomer or a mixture thereof is polymerized in a vapor state polymerization process using a stirred-bed, quench-cooled, horizontal reactor.

Vapor phase reactor off-gas recycle system for use in the vapor state

A melt finish process is disclosed herein for working up solid, particulate polymer from a vapor state polymerization reactor, which reactor employs high yield catalysts, whereby the polymer is moved out of the reactor and into a post polymerization zone characterized by essentially adiabatic polymerization and the heat of such polymerization is used in raising the temperature of and melting said solid, particulate polymer to form molten polymer for further processing.

Melt finishing process for polymers produced by vapor state

A method is herein disclosed by which a polymerizable monomer or a mixture thereof can be economically and efficiently converted to polymeric substances with a high yield catalyst in a vapor phase polymerization process using a stirred-bed, quench-cooled, horizontaL reactor together with essentially total reactor off-gas recycle and melt finishing. The method is further characterized by being essentially isobaric at least up to the polymer finishing steps.

Process for the vapor phase polymerization of monomers in a horizontal,

Apparatus for the vapor phase polymerization of at least one polymerizable monomer comprising: (a) a horizontal reactor of substantially circular cross-section containing a centrally-located drive shaft extending longitudinally through said reactor to which are attached a plurality of adjacently located paddles, which paddles cause essentially no forward or backward movement of the particulate matter contained in said reactor and extend transversely within and to a short distance from the internal surfaces of said reactor, said reactor being divided into two or more individually gas-composition-controllable and polymerization-temperature-controllable polymerization compartments, by one or more dividing structures so constructed to control gas intermixing and movement of said particulate matter between said compartments; (b) driving means for said drive shaft; (c) one or more reactor off-gas outlets in each of said compartments spaced along the topward part of said reactor; (d) one or more vapor recycle inlets in each of said compartments spaced along the bottomward portion of said reactor; (e) one or more catalyst addition inlets in each of said compartments spaced along said reactor; (f) a plurality of quench liquid inlets spaced along the topward part of said reactor whereby quench liquid can be introduced into said two or more compartments; and (g) takeoff means for said particulate matter at one end of said reactor.

Growing community of inventors

Winfield, IL, United States of America

Edwin F Peters