Patents by Inventor Markku Raiko
Markku Raiko 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).
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Publication number: 20150191655Abstract: The invention relates to an apparatus for producing a pyrolysis product, the apparatus comprising a pyrolysis reactor for forming pyrolysis product fractions from raw material by fast pyrolysis, a condensing device for condensing gaseous pyrolysis product fractions to mainly liquid pyrolysis product fractions, a combustion boiler arranged in conjunction with the pyrolysis reactor for forming energy fractions, and feeding devices for feeding raw materials to the pyrolysis reactor and the combustion boiler. According to the invention, the apparatus comprises a separating device arranged substantially in conjunction with the pyrolysis reactor for separating other fractions from the gaseous pyrolysis product fractions after the pyrolysis and means for conducting other fractions than the gaseous pyrolysis product fractions from the separator to the combustion boiler.Type: ApplicationFiled: March 23, 2015Publication date: July 9, 2015Inventors: Kai SIPILÄ, Yrjö SOLANTAUSTA, Pekka JOKELA, Markku RAIKO
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Patent number: 8979952Abstract: The invention relates to the improvement of the fuel-properties of biomass in an integrated manner to facilitate storage, shipping and applicability thereof. In the process, biomass (6) is thermally treated within a combustion process to cause partial torrefaction of the organic matter present in biomass, thus yielding components inert to biological decomposition processes. Constituents (10) separated in gaseous form are utilized as fuel, while the thermally treated biomass (8) remaining in the solid form is utilized in a separate process.Type: GrantFiled: May 5, 2010Date of Patent: March 17, 2015Assignee: Valmet Power OyInventor: Markku Raiko
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Patent number: 8668811Abstract: Disclosed herein is an apparatus and a method for producing a pyrolysis liquid, wherein the pyrolysis liquid is formed by means of pyrolysis from a raw material by forming, and a pyrolysis reactor, a gaseous pyrolysis product by pyrolysis and condensing it in a condenser into a pyrolysis liquid, and feeding circulation gas into the pyrolysis reactor. The circulation gas is conducted by a liquid ring compressor into the pyrolysis reactor and purified before being conducted into the pyrolysis reactor, and the pyrolysis liquid is used as the liquid layer in the liquid ring compressor.Type: GrantFiled: February 22, 2013Date of Patent: March 11, 2014Assignee: Metso Power OyInventors: Sampo Ratinen, Jani Lehto, Mikko Anttila, Tuomo Hilli, Kristin Onarheim, Ismo Hirvonen, Yrjo Solantausta, Markku Raiko
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Publication number: 20120060412Abstract: The invention relates to the improvement of the fuel-properties of biomass in an integrated manner to facilitate storage, shipping and applicability thereof. In the process, biomass (6) is thermally treated within a combustion process to cause partial torrefaction of the organic matter present in biomass, thus yielding components inert to biological decomposition processes. Constituents (10) separated in gaseous form are utilized as fuel, while the thermally treated biomass (8) remaining in the solid form is utilized in a separate process.Type: ApplicationFiled: May 5, 2010Publication date: March 15, 2012Applicant: METSO POWER OYInventor: Markku Raiko
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Publication number: 20110041388Abstract: The invention relates to a method for carrying out pyrolysis in such manner that a first raw material is fed to a combustion boiler and a second raw material is fed to a pyrolysis reactor which are integrated together, energy fractions are formed from the raw material in the combustion boiler and gaseous and liquid product fractions are formed from the raw material in the pyrolysis reactor by fast pyrolysis.Type: ApplicationFiled: October 8, 2008Publication date: February 24, 2011Applicant: Valtion Teknillinen TutkimuskeskusInventors: Kai Sipilä, Yrjö Solantausta, Pekka Jokela, Markku Raiko
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Patent number: 7465372Abstract: Method for treatment of spent liquor at a pulp mill, in which method at least a part of the spent liquor flow arriving from the evaporation plant is taken to a pyrolysis reactor, wherein it is pyrolysed at a temperature of 300-800° C. in order to separate evaporable compounds from the coke remaining in a solid state. The pyrolysis products, which are gases or liquids, may be used as fuel or they may be processed further. The coke resulting from the pyrolysis is burnt in a soda recovery boiler or in a gasification reactor to regenerate cooking chemicals. The method is suitable for recovery of chemicals and energy both in sulphate and sulphite processes and also in cooking methods based on organic solvents.Type: GrantFiled: July 4, 2002Date of Patent: December 16, 2008Assignee: Metso Power OyInventors: Kari Sundman, Markku Raiko, Mika Repka, Jari Sutinen
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Publication number: 20050284593Abstract: Method for treatment of spent liquor at a pulp mill, in which method at least a part of the spent liquor flow (10) arriving from the evaporation plant is taken to a pyrolysis reactor (1), wherein it is pyrolysed at a temperature of 300-800° C. in order to separate evaporable compounds (12) from coke (11) remaining in a solid state. The pyrolysis products (11), which are gases or liquids, may be used as fuel or they may be processed further. The coke (11) resulting from the pyrolysis is burnt in a soda recovery boiler (3) or in a gasification reactor (2) to regenerate cooking chemicals. The method is suitable for recovery of chemicals and energy both in sulphate and sulphite processes and also in cooking methods based on organic solvents.Type: ApplicationFiled: July 4, 2002Publication date: December 29, 2005Inventors: Kari Sundman, Markku Raiko, Mika Repka, Jari Sutinen
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Patent number: 6951106Abstract: The present invention concerns an integration construction between a steam boiler provided with a combustion chamber and a steam turbine. The steam is conducted from the steam boiler (10) along a connector to the steam turbine (11) for rotating an electric generator (K) producing electricity. The supply water circulated via the steam boiler (10) is vaporized in a vaporizer (190) located in the steam boiler (10) and superheated in a superheater (120). The supply water is conducted into the boiler through an economizer (20) acting as a heat exchanger, where heat is transferred from the flue gases of the boiler into the supply water. The economizer (20) is provided with at least two sections, comprising at least one first economizer section (20a1) and at least one second economizer section (20a2).Type: GrantFiled: January 2, 2001Date of Patent: October 4, 2005Assignee: Fortum OyjInventor: Markku Raiko
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Patent number: 6813888Abstract: The present invention concerns an integration construction between a steam boiler provided with a combustion chamber and a steam turbine. The steam is conducted from the steam boiler (10) along a connector to the steam turbine (11) for rotating an electric generator (G) producing electricity. The supply water circulated via the steam boiler (10) is vaporized in vaporizer (190) located in the steam boiler (10) and superheated in a superheater (120). The supply water is conducted into the boiler through an economizer (20) acting as a heat exchanger, in which heat is transferred from the flue gases of the boiler into the supply water. The economizer (20) is provided with at least two sections, comprising at least one first economizer section (20a1) and at least one second economizer section (20a2).Type: GrantFiled: October 24, 2003Date of Patent: November 9, 2004Assignee: Fortum OyjInventor: Markku Raiko
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Publication number: 20040098987Abstract: The present invention concerns an integration construction between a steam boiler provided with a combustion chamber and a steam turbine. The steam is conducted from the steam boiler (10) along a connector to the steam turbine (11) for rotating an electric generator (K) producing electricity. The supply water circulated via the steam boiler (10) is vaporized in a vaporizer (190) located in the steam boiler (10) and superheated in a superheater (120). The supply water is conducted into the boiler through an economizer (20) acting as a heat exchanger, where heat is transferred from the flue gases of the boiler into the supply water. The economizer (20) is provided with at least two sections, comprising at least on e first economizer section (20a1) and at least one second economizer section (20a2).Type: ApplicationFiled: December 4, 2003Publication date: May 27, 2004Inventor: Markku Raiko
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Publication number: 20040050051Abstract: The present invention concerns an integration construction between a steam boiler provided with a combustion chamber and a steam turbine. The steam is conducted from the steam boiler (10) along a connector to the steam turbine (11) for rotating an electric generator (G) producing electricity. The supply water circulated via the steam boiler (10) is vaporized in vaporizer (190) located in the steam boiler (10) and superheated in a superheater (120). The supply water is conducted into the boiler through an economizer (20) acting as a heat exchanger, in which heat is transferred from the flue gases of the boiler into the supply water. The economizer (20) is provided with at least two sections, comprising at least one first economizer section (20a1) and at least one second economizer section (20a2).Type: ApplicationFiled: October 24, 2003Publication date: March 18, 2004Inventor: Markku Raiko
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Patent number: 5660148Abstract: The invention concerns a method and a device in the cooling of the circulating material in a fluidized-bed boiler. In the method the fuel (A) is introduced into the circulating-powder combustion chamber (10) of the fluidized-bed boiler into the lower part of the circulating-powder combustion chamber (10) and an inert circulating material, which contains a proportion of unburned powdered fuel (A), is circulated from the top part of the circulating-powder combustion chamber (10) to the lower part of the circulating-powder combustion chamber (10). The flue gases are passed in the method from the powder separator (13) along the duct (15) into the exhaust-gas boiler (16), through whose heat exchanger (16a) thermal energy of the flue gases is transferred further to other useful use.Type: GrantFiled: February 24, 1994Date of Patent: August 26, 1997Assignee: Imatran Voima OyInventor: Markku Raiko
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Patent number: 5419267Abstract: The present publication discloses a method and an apparatus for drying the fuel used for firing a fluidized-bed boiler (1). The hot, inert solids of the fluidized bed are circulated by a regulated rate from the furnace (2) to a simple dryer (11) incorporated into the fuel feed line (7) to the boiler (1), whereby the fuel is dried and steam is generated. By virtue of controlled bed solids recirculation, a constant temperature of the dryer (11) can be maintained, thus permitting the omission of all heat transfer surfaces from the dryer (11). The nearly clean steam released from the drying process is routed from the dryer (11) to useful applications. (FIG.Type: GrantFiled: May 26, 1994Date of Patent: May 30, 1995Assignee: Imatran Voima OyInventor: Markku Raiko
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Patent number: 5253432Abstract: The invention concerns a method for the drying of a water-consuming material in a power-plant process. The water-containing material to be dried is introduced into a pressurized dryer (10) and thermal energy is supplied for the drying of the water-containing material. The steam produced in the drying is, at least partly, passed along a separate duct as injection steam into the combustion unit (13) of a gas turbine (14). The invention also concerns a dryer used in the method.Type: GrantFiled: March 19, 1992Date of Patent: October 19, 1993Assignee: Imatran Voima OyInventors: Markku Raiko, Martti Aijala, Ilkka Huttunen
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Patent number: 5175993Abstract: The invention concerns a combined gas-turbine and steam-turbine power plant, which comprises heat transfer members which interconnect a pressurized dryer (26) and waste-heat recovery members (22), by means of which the recovered thermal energy of the exhaust gases from the gas turbine (20) can be transferred directly or through the steam turbine into the dryer (26) for the drying of a water-containing material, advantageously fuel, and for the passing of the steam produced as injection steam to the gas turbine (20). The invention also concerns a method for improving the efficiency of a power-plant process.Type: GrantFiled: September 27, 1991Date of Patent: January 5, 1993Assignee: Imatran Voima OyInventors: Markku Raiko, Martti ijala
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Patent number: 4866928Abstract: This publication discloses a method and an apparatus for the utilization of the heat value of a water-bearing fuel in a gas turbine power plant. The apparatus comprises a high-pressure combustion unit (7), a gas turbine (15), a generator (16), and heat recovery units, the latter connected the system close to the gas turbine (15) outlet. According to the invention the water-bearing fuel is dried in a high pressure by the heat energy of the turbine exhaust gases, and the steam generated in the dryer stage is fed to the high-pressure section of the combustion process, at a point between a compressor (9) and the turbine (15), that is, for instance, into the combustion or gasification unit (7). The system in accordance with the invention provides for the utilization of the heat value of fuels having a high moisture content.Type: GrantFiled: January 29, 1988Date of Patent: September 19, 1989Assignee: Imatran Voima OyInventor: Markku Raiko