Praxair Receives Patent for Oxygen Injection in Fluidized Bed Reactors.DANBURY, Conn.--(BUSINESS WIRE)--October 15, 1998--Praxair, Inc. (NYSE NYSE See: New York Stock Exchange : PX) today announced receipt of U.S. Patent No. 5,801,265 for direct oxygen injection in a fluidized bed reactor A fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a granular solid material (usually a catalyst possibly shaped as tiny spheres) at system, which can improve the production of several commodity chemicals, such as acrylonitrile acrylonitrile /ac·ry·lo·ni·trile/ (ak?ri-lo-ni´tril) a colorless halogenated hydrocarbon used in the making of plastics and as a pesticide; its vapors are irritant to the respiratory tract and eyes, may cause systemic poisoning, and are , maleic anhydride and vinyl chloride vinyl chloride or chloroethylene Colourless, flammable, toxic gas (H2C=CHCl), belonging to the family of organic compounds of halogens. It is produced in very large quantities and used principally to make PVC, as well as in other syntheses and in monomer monomer (mŏn`əmər): see polymer. monomer Molecule of any of a class of mostly organic compounds that can react with other molecules of the same or other compounds to form very large molecules (polymers). . Praxair estimates that over 100 chemical producers worldwide use fluidized bed reactors for the production of these intermediate chemicals, which are ingredients in synthetic fibers, resins and plastics. The Praxair patent covers the method and apparatus for direct oxygen injection with a reactant reactant /re·ac·tant/ (re-ak´tant) a substance entering into a chemical reaction. re·ac·tant n. stream into a fluidized bed reactor. Oxygen is introduced directly into the reactant gas feed stream of a fluidized bed reactor. This lowers the local oxygen deficiency at the site where the feed is introduced into the reactor, which can result in increased yield, lower catalyst losses and productivity increases of up to 15 percent. Praxair is the second largest supplier of industrial and specialty gases to chemical companies worldwide, with 1997 sales of more than $700 million to this segment. Using its industrial gas know-how and patented technologies, Praxair works with chemical customers to help them lower costs, improve productivity and meet environmental goals. Praxair is the largest industrial gases company in North and South America, and one of the largest worldwide, with 1997 sales of $4.7 billion. The company produces, sells and distributes atmospheric, process and specialty gases, and high-performance surface coatings. Praxair is a recognized leader in the commercialization of new technologies that bring productivity and environmental benefits to a diverse group of industries. For more information, visit Praxair on the Internet at www.praxair.com. |
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