Patents by Inventor Matti Nurminen
Matti Nurminen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7473811Abstract: The present invention relates to a process for the hydrogenation of olefins. The process comprises hydrogenation of a feed stock comprising more than 90 wt-% of olefins, carried out in a hydrogenation reactor comprising at least two reaction stages, wherein the feed stock is hydrogenated in the first reaction stage equipped with a cooling circuit and comprising a first and an optional second catalyst bed, and the effluent from the first reaction stage is hydrogenated in the final reaction stage comprising one or more catalyst beds and optionally equipped with a cooling circuit, the process is operated in trickling or pulse flow mode in a three phase reactor with a fixed catalyst bed and at least one catalyst of same or different type is used in each stage, the catalyst having different particle size and/or optionally different shape in at least two stages.Type: GrantFiled: November 12, 2004Date of Patent: January 6, 2009Assignee: Neste Oil OyjInventors: Isto Eilos, Antti Pyhälahti, Matti Nurminen, Veli-Matti Purola
-
Patent number: 7196238Abstract: The invention relates to a process for dimerizing lower, olefinic hydrocarbons. In particular, the present invention concerns a process for dimerizing C3–, C4 and C5-olefins with a medium pore zeolite under process conditions allowing selective dimerization According to the invention, fresh olefinic hydrocarbon feedstock is fed to a reaction system including at least one reaction zone and at least one separation zone. The olefinic hydrocarbon feedstock is contacted with an acid catalyst at conditions in which at least a part of the olefins dimerizes. The effluent from the reaction zone is conducted to the separation zone where dimerized reaction product is separated from said effluent.Type: GrantFiled: March 10, 2003Date of Patent: March 27, 2007Assignee: Fortum OYJInventors: Matti Nurminen, Antti Pyhälahti, Pirjo Siira, Marja Tiitta
-
Patent number: 7038101Abstract: A method for operating a dimerization reactor that receives a hydrocarbon feed and produces an output stream comprising a light hydrocarbon component, a dimer and an alcohol component comprises: (a) separating the first output stream into a top stream containing the light hydrocarbon and a bottom stream containing the dimer, with the alcohol being present in the top stream or the bottom stream or both; (b) contacting at least one of the bottom and top streams with a water stream so as to extract at least a major portion of the alcohol therefrom, thereby forming an water/alcohol stream; (c) contacting the water/alcohol stream with a hydrocarbon stream so as to extract at least a major portion of the alcohol present in the water/alcohol stream into the hydrocarbon stream, thereby forming an alcohol-enriched hydrocarbon stream; and (d) feeding the alcohol-enriched hydrocarbon stream into the dimerization reactor.Type: GrantFiled: September 5, 2002Date of Patent: May 2, 2006Assignee: Neste Oil OyjInventors: Matti Nurminen, Ronald Birkhoff, Anand Subramanian
-
Publication number: 20050177014Abstract: The present invention relates to a process for the hydrogenation of olefins. The process comprises hydrogenation of a feed stock comprising more than 90 wt-% of olefins, carried out in a hydrogenation reactor comprising at least two reaction stages, wherein the feed stock is hydrogenated in the first reaction stage equipped with a cooling circuit and comprising a first and an optional second catalyst bed, and the effluent from the first reaction stage is hydrogenated in the final reaction stage comprising one or more catalyst beds and optionally equipped with a cooling circuit, the process is operated in trickling or pulse flow mode in a three phase reactor with a fixed catalyst bed and at least one catalyst of same or different type is used in each stage, the catalyst having different particle size and/or optionally different shape in at least two stages.Type: ApplicationFiled: November 12, 2004Publication date: August 11, 2005Applicant: Fortum OyjInventors: Isto Eilos, Antti Pyhalahti, Matti Nurminen, Veli-Matti Purola
-
Publication number: 20050053450Abstract: A method and a system utilizing the same, comprising two or more stacker cranes, of which each is intended to transfer at least one load independently, comprising a horizontally movable driving carriage and a lifting carriage arranged therein and intended for the manipulation and vertical transfer of said load. At least two stacker cranes are arranged to move, when necessary, to such a relative position in which it is possible to manipulate and transfer a load resting on the support of both lifting carriages simultaneously and to perform the movements of the driving carriages and the lifting carriages in a synchronized manner.Type: ApplicationFiled: August 31, 2004Publication date: March 10, 2005Applicant: Fastems Oy AbInventors: Juhana Kantola, Matti Nurminen, Juhani Rantalainen, Tero Rapila, Jari Tikkala
-
Publication number: 20040181106Abstract: The invention relates to a process for dimerizing lower, olefinic hydrocarbons. In particular, the present invention concerns a process for dimerizing C3-, C4 and C5-olefins with a medium pore zeolite under process conditions allowing selective dimerization According to the invention, fresh olefinic hydrocarbon feedstock is fed to a reaction system including at least one reaction zone and at least one separation zone. The olefinic hydrocarbon feedstock is contacted with an acid catalyst at conditions in which at least a part of the olefins dimerizes. The effluent from the reaction zone is conducted to the separation zone where dimerized reaction product is separated from said effluent.Type: ApplicationFiled: March 10, 2003Publication date: September 16, 2004Inventors: Matti Nurminen, Antti Pyhalahti, Pirjo Siira, Marja Tiitta
-
Publication number: 20030050522Abstract: A method for operating a dimerization reactor that receives a hydrocarbon feed and produces an output stream comprising a light hydrocarbon component, a dimer and an alcohol component comprises: (a) separating the first output stream into a top stream containing the light hydrocarbon and a bottom stream containing the dimer, with the alcohol being present in the top stream or the bottom stream or both; (b) contacting at least one of the bottom and top streams with a water stream so as to extract at least a major portion of the alcohol therefrom, thereby forming an water/alcohol stream; (c) contacting the water/alcohol stream with a hydrocarbon stream so as to extract at least a major portion of the alcohol present in the water/alcohol stream into the hydrocarbon stream, thereby forming an alcohol-enriched hydrocarbon stream; and (d) feeding the alcohol-enriched hydrocarbon stream into the dimerization reactor.Type: ApplicationFiled: September 5, 2002Publication date: March 13, 2003Applicant: Fortum OyjInventors: Matti Nurminen, Ronald Birkhoff, Anand Subramanian
-
Patent number: 5254784Abstract: The invention relates to a method for removing a boron trifluoride from the exhaust gases of a vacuum pump, which gases have been obtained when polymerizing .alpha.-olefines by using a BF.sub.3 -alcohol complex as a catalyst. In a vacuum distillation, the underpressure is achieved by means of a pump sealed with a fluid ring or by means of fluid jet with a torque or ejector pump, possibly assisted by a mechanical blaster, such as a propellant circulating pump. In this pump, the fluid ring or the fluid jet is formed by a cocatalyst forming a complex with the BF.sub.3 catalyst, which cocatalyst is an alcohol, preferably butanol.Type: GrantFiled: December 20, 1991Date of Patent: October 19, 1993Assignee: Neste OyInventors: Matti Nurminen, Fredrik Nissfolk, Raimo Linnaila, Vesa-Matti Happonen
-
Patent number: 4956512Abstract: In producing lubricants by oligomerizing alpha-olefins with the aid of a catalyst of a BF.sub.3 and alcohol or carboxylic acid cocatalyst, the utilized catalyst complex can be recovered by distillation and reused as catalyst in a similar oligomerizing process.Type: GrantFiled: November 14, 1988Date of Patent: September 11, 1990Assignee: Neste OyInventors: Fredrik Nissfolk, Salme Koskimies, Peter Idelman, Matti Nurminen, Salla Roni