21
Masaaki Igarashi, Kunio Kondo, Kazuhiro Ogawa, Masakatsu Ueda, Tomoki Mori: Duplex stainless steel. Sumitomo Metal, Burns Doane Swecker & Mathis, December 15, 1998: US05849111 (13 worldwide citation)

A super duplex stainless steel with low susceptibility to weld cracks and high weldability, as well as the resistance to stress corrosion cracking and toughness of the weld zones. The steel is therefore suitable for a wide range of applications including heat exchangers exposed to sea water, brine-r ...


22
John F Straitz III: Flare stack gas burner. Combustion Unlimited Incorporated, Zachary T Wobensmith 2nd, Zachary T Wobensmith III, January 18, 1977: US04003693 (13 worldwide citation)

A flare stack gas burner for waste combustible gas from oil refineries, chemical plants, oil production rigs, LPG and other marketing terminals, pipe lines and the like is disclosed which includes a stack with a centrally disposed combustible gas delivery pipe having a divider at the top with arms f ...


23
John Charles Briant, Ronald P DeBenedetto, Barbara L Baker: Methods for wastewater treatment. Tuboscope Vetco International, Finnegan Henderson Farabow Garrett & Dunner L, October 17, 2000: US06132630 (11 worldwide citation)

A method has been invented for separating components of a wastewater stream, the stream containing water, oil (e.g. heavy oil and/or light oil), undesirable organic material (solid and/or liquid), and contaminating solids, the method including feeding a wastewater stream to a first pre-treatment uni ...


24
Kazumasa Aso, Hiroshi Matsuo, Hideo Noda, Tomoaki Takada, Nobuyuki Kobayashi: Heat integrated distillation column. Kimura Chemical Plants, Kansai Chemical Engineering, Maruzen Petrochemical, Armstrong Westerman Hattori McLeland & Naughton, July 21, 1998: US05783047 (11 worldwide citation)

A monotube or multitube 2 is coupled to a body shell 1 via tube plates 3a and 3b at both ends, so that a tube interior 4 and a tube exterior 5 of the monotube or multitube 2 are isolated from each other. A difference is made in operating pressure between the tube interior 4 and the tube exterior 5, ...


25
Reinhard Schoenfeld, Juergen Hofmann: Multistory structure for chemical plants. Nukem, Beveridge DeGrandi Weilacher & Young, December 12, 1995: US05474411 (11 worldwide citation)

A structure found of several structural segments with superposed rooms is used for chemical plants which permit a very flexible method of production with rapid product changes. The plant components together with associated connections are housed on mobile frames in the rooms so that the plant compon ...


26
Nagase Yoshiyuki, Fukuzato Ryuichi: Method of and apparatus for decomposing waste. Kobe Steel, July 22, 1998: EP0854165-A1 (11 worldwide citation)

A method of decomposing wastes containing target compounds having one or more of hydrolyzable bonds of ether bond, ester bond, amide bond and isocyanate bond wherein the method comprises continuously supplying the wastes in a molten state or liquid state to a reactor, continuously supplying super-cr ...


27
Dugan John J, Pasternak Israel S: Flue gas desulfurization in molten media. Exxon Research and Engineering Company, Caulfield D C, March 25, 1975: US3873670 (10 worldwide citation)

Sulfur oxides such as sulfur dioxide as well as nitrogen oxides are removed from flue gas by contacting the flue gas at elevated temperatures with a molten medium containing an alkali or alkaline earth metal oxide of hydroxide, including mixtures thereof, in combination with a glass-forming oxide su ...


28
Yoshiyuki Nagase, Ryuichi Fukuzato: Method of and apparatus for decomposing wastes. Kabushiki Kaisha Kobe Seiko Sho, Takeda Chemical, Oblon Spivak McClelland Maier & Neustadt P C, October 8, 2002: US06462230 (9 worldwide citation)

A method of decomposing wastes containing target compounds having one or more of hydrolyzable bonds of ether bond, ester bond, amide bond and isocyanate bond wherein the method comprises continuously supplying the wastes in a molten state or liquid state to a reactor, continuously supplying super-cr ...


29
Richard A Dortzbach: Thermal pipe guard. James R Cypher, April 4, 1995: US05402830 (7 worldwide citation)

A thermal guard for pipes to protect personnel from hot or cold pipes in refineries, chemical plants and other places processing hot or cold fluids. The guard is made from metal and contains no insulation so that the pipes are readily visible for observing leaks and can be readily repaired. The guar ...


30
Carlo Pisoni: Multitube falling-film reactor. Meccaniche Moderne S r l Chemical Plants Division, Bucknam and Archer, August 29, 1995: US05445801 (7 worldwide citation)

Mulitube falling-film reactor for the continuous sulfonation and sulfation of fluid-state organic substances by reaction with gaseous sulphuric anhydride (SO.sub.3), has each tubular element non-permanently fixed to the plates and has a nozzle (10) fitted in a sleeve (20) integral with a reaction tu ...



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