Dow Global Technolgoies LLC

Dow Technology Investments LLC

Dow Global Technology Inc.

Charles William Lipp

Christopher P Christenson

Harvey E Andresen

Victor R Fey

John R Mayer

Michael L Hutchison

Laurence G Britton

Thomas J Kling

Michael J Rangitsch

Michael D Cloeter

Raymond M Jones

Gene W Bachman

Mark J Bartel

Brady J Coomes

Scott J Daigle

Steve F Janda

Bruce D Hook

Edward E Timm

Matthias Schaefer

John P Henley

Dennis Wade Jewell

William W Fan

Christian D Kneupper

James David Tate

Heinz Groenewald

Leopoldo Salinas, Iii

Sascha Noormann

Christopher H Domke

Mary Beth Seasholtz

Bruce J Gertner

Ranate Patrascu

Christopher J Reed

Tarver Gayle Snedecor, Jr

Andy Weber

James Everett Clark

Linh Le

A mixer for a continuous flow reactor and methods for forming the mixer and the operation thereof. The mixer allows for segmentation of a primary reactant flow through a plurality of ports into many smaller flows that are injected as jets into a secondary reactant flow in channels of the mixer. The channel has a constant width dimension to enhance even flow distribution and local turbulence of the primary and secondary reactant flows. The constant width dimension of the channel and the size and number of the ports of the mixer can be configured to ensure the primary reactant flow injected into the channel directly impinges on a surface of the channel that is opposite the injection point at normal operating conditions.

Mixer for continuous flow reactor

Apparatus for spectroscopic analysis which includes a tunable diode laser spectrometer having a digital output signal and a digital computer for receiving the digital output signal from the spectrometer, the digital computer programmed to process the digital output signal using a multivariate regression algorithm. In addition, a spectroscopic method of analysis using such apparatus. Finally, a method for controlling an ethylene cracker hydrogenator.

Spectroscopic analysis and control

A mixer () for a continuous flow reactor () and methods for forming the mixer and the operation thereof. The mixer allows for segmentation of a primary reactant flow through a plurality of ports () into many smaller flows that are injected as jets into a secondary reactant flow in channels of the mixer. The channel () has a constant width dimension to enhance even flow distribution and local, turbulence of the primary and secondary reactant flows. The constant width dimension of the channel and the size and number of the ports of the mixer can be configured to ensure the primary reactant flow injected into the channel directly impinges on a surface () of the channel that is opposite the injection point at normal operating conditions.

Mixer for continuous flow reactor, continuous flow reactor, method of forming such a mixer, and method of operating such a reactor

A gas mixer () for mixing a first gas stream with a second gas stream includes an impact labyrinth () in the first gas stream having structures (), e.g., corrugated walls, forming a tortuous path through which the first gas stream must pass en route to a mixing point () in the gas mixer. The labyrinth fosters ignition of particles entrained in the first gas stream. Elongate, straight pipes () receive the first gas stream from the impact labyrinth () and carrying the first gas stream to the mixing point () the pipes () are positioned with a vessel () carrying the second gas stream. The pipes () have openings which are substantially aligned with the flow direction of the second gas stream at the mixing point () thereby introducing the first gas stream into the second gas stream in a low shear manner.

Low shear gas mixer

A method of mixing an oxygen gas with a hydrocarbon-containing gas includes the steps of wet scrubbing the oxygen gas in a wet scrubber, supplying oxygen gas from the wet scrubber to a gas mixer and mixing the oxygen gas with the hydrocarbon-containing gas in the gas mixer. Wet scrubbers for use in the method may take various forms, including packed-tower, bubble cap, and sparger-type wet scrubbers. The removal of the particulate matter reduces the risk of ignition of the hydrocarbon-containing gas in the gas mixer. The use of a wet scrubber in the oxygen supply line overcomes many problems currently faced with screen and filters, as per current practice.

Wet scrubbing for removing particulate solids from oxygen supply line

Disclosed is a catalyst injection nozzle that comprises an outer tube with an open end, a nozzle tip with a diameter connected to the outer tube open end, an orifice connected to the nozzle tip internal to the outer tube, an internal mixing zone connected to the orifice internal to the outer tube, an inner tube residing within the outer tube further comprising an open end connected to the internal mixing zone, where a steady-state, uniform two-phase flow regime between an atomizing gas and at least one liquid catalyst feed does not form in the internal mixing zone at an atomizing gas to liquid catalyst feed flow ratio of about 0.05 to about 10.

Method for gas phase polymerization

A hydrocarbon-containing gas is mixed with an oxygen-containing gas in a gas mixer in the presence of a water mist. The water mist surrounds and contacts entrained particles in either the oxygen-containing gas stream or the hydrocarbon-containing gas stream. The water acts to suppress and prevent ignition of the hydrocarbon gas in the mixer by serving as a sink for heat created by energetic collisions between such particles and structures within the gas mixer. The water mist also acts to quench ignition caused by such collisions. The water mist can be introduced into the gas mixer in a number of different configurations, including via nozzles injecting a mist into a hydrocarbon gas manifold or an oxygen gas manifold, nozzles placed within the gas mixer adjacent to ends of the oxygen supply pipes, and nozzles placed coaxially within the oxygen supply pipes in the gas mixer.

Hydrocarbon/oxygen industrial gas mixer with water mist

A gas mixer is disclosed which includes a vessel () (e.g., pipe) containing a stream () of a first hydrocarbon-containing gas. The mixer includes a hollow pipe () located internal to the vessel containing a stream of a second gas, e.g., an oxygen-containing gas stream such as a stream of pure oxygen gas or air enriched with oxygen. The internal pipe further includes a mixer tip () at the peripheral end thereof. The mixer tip includes a body having an internal passage for conducting the second gas out of the pipe and an opening introducing the second gas stream into the first gas stream in a radial plane at an acute angle relative to the longitudinal axis of the pipe. The pipe further includes a deflector () on its external surface in longitudinal alignment with the opening of the mixer tip. The deflector serves to deflect any entrained particles within the first gas stream away from the mixing zone where the two streams mix, minimizing the risk of ignition of the hydrocarbon-containing gas.

Oxygen/hydrocarbon rapid (high shear) gas mixer, particularly for the production of ethylene oxide

A process for producing epoxide, the process including contacting an organic phase including at least one halohydrin(s) with at least one aqueous phase including a base in a plug-flow mixer/reactor system to disperse the organic phase in the aqueous phase via a mixing device imparting a power-to-mass ratio of at least 0.2 W/kg to convert at least a portion of the at least one halohydrin to an epoxide.

Process for producing epoxides

A hydrocarbon-containing gas is mixed with an oxygen gas in a gas mixer in the presence of coarse water droplet environment, e.g., a 'rainy' or 'driving rainstorm' environment in which the water droplets generally have a size greater than 200 microns SMD. The water droplets surround and contact entrained particles in either the oxygen gas stream or the hydrocarbon-containing gas stream. The water acts to suppress, prevent and quench ignition of the hydrocarbon gas in the mixer which would otherwise be caused by energetic collisions between such particles and structures within the gas mixer. In one configuration the gas mixer includes water pipes having coarse water droplet-producing nozzles at the peripheral end thereof concentrically located within oxygen supply pipes. Additionally, nozzles introduce coarse water droplets into a pipe carrying the hydrocarbon gas and forming a mixing chamber for the hydrocarbon and oxygen gases.

Hydrocarbon/oxygen industrial gas mixer with coarse water droplet environment to reduce ignition potential

A process and apparatus are described for converting a feed that is substantially comprised of halogenated materials, and especially byproduct and waste chlorinated hydrocarbons as are produced from a variety of chemical manufacturing processes, to one or more higher value products via a partial oxidation reforming reaction step. These products can be in the form of a useful or salable acid product and/or a product synthesis gas comprised of carbon monoxide and hydrogen, or the reaction product including the same hydrogen halide, carbon monoxide and hydrogen components can be employed as a feed in the synthesis of a different useful or salable product.

Production of one or more useful products from lesser value halogenated materials

Growing community of inventors

Lake Jackson, TX, United States of America

Charles William Lipp