Patents by Inventor Masaki Iijima

Masaki Iijima 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).

  • Publication number: 20190181002
    Abstract: A method for manufacturing a semiconductor device includes forming a SiN film on a substrate. Plasma treatment is applied to the SiN film using a He-containing gas.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 13, 2019
    Applicant: ASM IP Holding B.V.
    Inventors: Toshiaki Iijima, Masaki Tokunaga, Jun Kawahara
  • Patent number: 9873642
    Abstract: A system or method for producing gasoline from natural gas via methanol can effectively use the heat of reaction generated during the synthesis of gasoline and is capable of readily cooling the gasoline synthesis column in the production of gasoline from natural gas via methanol. A steam reformer 10 steam-reforms natural gas to generate reformed gas, methanol is synthesized by a methanol synthesis column 20 from the reformed gas, and in synthesizing gasoline from methanol by using a gasoline synthesis column 30, combustion air 41 to be supplied to the steam reformer 10 is preheated with the heat of reaction generated in the gasoline synthesis column 30, and then the preheated combustion air 41 is supplied to the steam reformer 10.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 23, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9790154
    Abstract: Provided is a methanol plant that can obtain fresh water from sea water by using, in a seawater desalination device, the exhaust heat discharged in a step for producing methanol from natural gas. The methanol plant is provided with: a heat exchanger (4) that recovers into a thermal medium (for example, seawater) the exhaust heat discharged from a step for producing methanol from a feed stock (for example, natural gas); and a seawater desalinization device (6) that obtains freshwater from seawater using the exhaust heat recovered by means of the thermal medium.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: October 17, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masaki Iijima, Haruaki Hirayama
  • Patent number: 9638367
    Abstract: A saturator includes: a flow path inside of which a first fluid flows; a first heat exchange unit that causes heat exchange between the first fluid and a second fluid; a second heat exchange unit that causes heat exchange between a third fluid and the first fluid after the first fluid has passed through the first heat exchange unit; a humidifying unit that adds water to the first fluid upstream from the first heat exchange unit and the second heat exchange unit; and a conveyance path that conveys the third fluid after heat exchange from the second heat exchange unit to the upstream side of the first heat exchange unit and causes said third fluid to flow into the flow path as the first fluid.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: May 2, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masaki Iijima, Masato Matsuzawa
  • Publication number: 20170114718
    Abstract: By using a combustion flue gas (18) from a power turbine (16), a high-pressure secondary compressed air (12C) is subjected to heat exchange in a first heat exchange unit (19A) of an exhaust heat recovery device (19), and by using resultant heat-exchanged flue gas (18A), a low-pressure primary compressed air (12A) is subjected to heat recovery in a second heat exchange unit (19B) of a saturator (31). Then, a primary compressed air (12B) that has been subjected to heat recovery in the second heat exchange unit (19B) is introduced into a secondary air compressor (22) to increase the pressure of the air, and then the high-pressure air is subjected to heat recovery in the first heat exchange unit (19A), producing a secondary compressed air (12D). The secondary compressed air (12D) is introduced into a combustor (14) and combusted using fuel.
    Type: Application
    Filed: April 24, 2015
    Publication date: April 27, 2017
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9611438
    Abstract: A steam reformer generates reformed gas by a steam-reforming reaction of hydrocarbon gas such as natural gas. A methanol synthesis column and a gasoline synthesis column synthesize gasoline from the reformed gas via methanol and produce a liquid fuel. A superheater superheats a part of low-pressure steam that has been heat-recovered from the reformed gas with a part of middle-pressure steam that has been heat-recovered by the methanol synthesis column or the gasoline synthesis column, and the steam thereby brought into an unsaturated state is supplied to a low-pressure steam turbine.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: April 4, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masaki Iijima, Ryuji Yoshiyama, Haruaki Hirayama, Yoshio Seiki
  • Publication number: 20160216035
    Abstract: Provided is a floating structure including an upstream flow passage to pass seawater entering through a seawater inlet, a downstream flow passage to pass seawater from the upstream flow passage to guide the seawater to a seawater outlet, a connecting flow passage connecting the upstream flow passage and the downstream flow passage, and a heat exchanger provided in the connecting flow passage, the heat exchanger cooling down a heat source of the plant facility using seawater. The heat exchanger is placed above an inlet position where seawater enters the connecting flow passage from the upstream flow passage and below an outlet position where seawater exits the connecting flow passage into the downstream flow passage.
    Type: Application
    Filed: August 28, 2014
    Publication date: July 28, 2016
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masaki IIJIMA, Kazuto KOBAYASHI
  • Patent number: 9400106
    Abstract: A CO2 recovery system 10A has a CO2 recovery unit 11, a compression unit 12, and a condensed-water supply line 65A that supplies condensed water 64 to an absorbent regenerator 14. The CO2 recovery unit 11 includes a CO2 absorber 13 and the absorbent regenerator 14. The compression unit 12 has a first compressor 61-1 to an nth compressor 61-n that compress CO2 gas 56 emitted from the absorbent regenerator 14, a first separator 63-1 to an nth separator 63-n that reduce moisture in the CO2 gas 56, and a first heat exchanger 66-1 that performs heat exchange between the CO2 gas 56 emitted from the first compressor 61-1 and the condensed water 64 emitted from the first separator 63-1.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 26, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9376356
    Abstract: A method or system for recovering carbon dioxide is provided with which in a plant for synthesizing methanol from a hydrocarbon gas or synthesizing gasoline therefrom via methanol, the waste heat of a low-temperature reformed gas, which has conventionally been discarded and is difficult to reutilize, can be effectively utilized. In the system for synthesizing methanol or gasoline from a hydrocarbon gas and for recovering carbon dioxide, a reformed gas is produced by steam reforming of the hydrocarbon gas. Since a combustion discharge gas generates when a fuel gas is burned in order to obtain a heat source for the steam reforming, carbon dioxide is recovered from the combustion discharge gas in an absorption tower (40) using an absorption liquid.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: June 28, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9341101
    Abstract: A system for collecting carbon dioxide in flue gas includes a stack that discharges flue gas discharged from an industrial facility to outside, a blower that is installed at the downstream side of the stack and draws the flue gas therein, a carbon-dioxide collecting device that collects carbon dioxide in the flue gas drawn in by the blower, and a gas flow sensor arranged near an exit side within the stack. A drawing amount of the flue gas by the blower to the carbon-dioxide collecting device is increased until an flow rate of the flue gas from the stack becomes zero in the gas flow sensor, and when the discharged amount of flue gas from the stack becomes zero, drawing in any more than that amount is stopped, and the carbon dioxide in the flue gas is collected while the flue gas is drawn in by a substantially constant amount.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: May 17, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Masaki Iijima, Takashi Kamijo, Yasuyuki Yagi, Kouki Ogura
  • Patent number: 9284856
    Abstract: The present invention is a gas turbine combined cycle power plant which generates electricity by fueling a gas turbine with crude oil or heavy oil and which is provided with a vacuum distillation unit which distills and extracts a light oil fraction from crude oil or heavy oil by keeping the interior thereof in an environment which lowers a boiling point of crude oil or heavy oil, and the vacuum distillation unit is provided with heaters which heat distillation materials by using low pressure steam and medium pressure steam generated in a gas turbine combined cycle.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: March 15, 2016
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Masaki Iijima, Toyoaki Komori, Ryotaro Kanai, Takeo Araki
  • Patent number: 9284234
    Abstract: Provided is a gasoline production device capable of effectively using heat of reaction generated in the synthesis of gasoline and also capable of readily cooling heat generated by synthesizing gasoline. A device 30 for producing gasoline from methanol includes a plurality of reaction tubes 34 configured to synthesize gasoline from methanol and a duct 36 configured to allow air to flow outside the reaction tubes, and heat exchange is carried out between synthesis heat generated within the reaction tubes 34 and the air which flows through the duct 36.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 15, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9266805
    Abstract: A system or method for producing gasoline or dimethyl ether from natural gas via methanol includes: steam-reforming natural gas to generate reformed gas; synthesizing methanol from the reformed gas; synthesizing gasoline or dimethyl ether from the methanol; and at least one is selected from the group consisting of: pre-reforming natural gas prior to the steam-reforming; recovering carbon dioxide from flue gas generated in the steam-reforming; and preheating combustion air to be supplied to the steam-reforming by using synthesis heat generated in the synthesis of gasoline or dimethyl ether. In addition, an overall energy balance of the system is constructed by using heat recovery from flue gas generated in the steam-reforming, heat recovery from the reformed gas, synthesis heat generated in the synthesis of methanol, synthesis heat generated in the synthesis of gasoline or DME, and heat recovered in the pre-reforming, carbon dioxide recovering, or air preheating, respectively if selected.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: February 23, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Publication number: 20160040076
    Abstract: A system for generating electric power and for producing gasoline from methanol, comprises: a gasoline production apparatus containing a catalyst layer for synthesizing gasoline from methanol, heat generated by the synthesis increasing a temperature of the gasoline production apparatus; a cooling apparatus for cooling the gasoline production apparatus with coolant to vaporize the coolant; and a power generation apparatus for generating electric power using the coolant vapor produced by the cooling apparatus.
    Type: Application
    Filed: October 19, 2015
    Publication date: February 11, 2016
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9254462
    Abstract: In a reclaiming apparatus (106) that includes an airtight container (106a) as an absorbent storing unit that stores a part of an absorbent that absorbs CO2 included in an exhaust gas and a heating unit that heats the absorbent stored in the airtight container (106a), a part of the absorbent stored in the airtight container (106a) is distributed, and a gaseous body is brought into counterflow contact with the absorbent that is distributed. As a result, since the gaseous body is brought into counterflow contact with a part of the absorbent stored in the absorbent storing unit, an absorbent component volatilizes and is separated from a degraded material, and the absorbent component can be extracted from the degraded material, whereby a loss of the absorbent can be reduced.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 9, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Masaki Iijima, Masahiko Tatsumi, Yasuyuki Yagi, Kouki Ogura
  • Patent number: 9249711
    Abstract: A system for collecting carbon dioxide in flue gas includes a stack that discharges flue gas discharged from an industrial facility to outside, a blower that is installed at the downstream side of the stack and draws the flue gas therein, a carbon-dioxide collecting device that collects carbon dioxide in the flue gas drawn in by the blower, and a gas flow sensor arranged near an exit side within the stack. A drawing amount of the flue gas by the blower to the carbon-dioxide collecting device is increased until an flow rate of the flue gas from the stack becomes zero in the gas flow sensor, and when the discharged amount of flue gas from the stack becomes zero, drawing in any more than that amount is stopped, and the carbon dioxide in the flue gas is collected while the flue gas is drawn in by a substantially constant amount.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 2, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Masaki Iijima, Takashi Kamijo, Yasuyuki Yagi, Kouki Ogura
  • Patent number: 9242204
    Abstract: The carbon dioxide recovery system includes: a first steam line 21a through which low-pressure steam 14L is fed from an intermediate-pressure turbine 12 to a low-pressure turbine 13; a second steam line 21b into which the low-pressure steam 14L is branched from the first steam line 21a; a first regulation valve V1 for regulating the opening of the low-pressure steam 14L from 100% to 0%; a second regulation valve V2 for regulating the opening of the low-pressure steam 14L from 0% to 100% depending on the amount of control provided to the first regulation valve V1; a first auxiliary turbine 22A for recovering power using the low-pressure steam 14L being fed; and a first steam feed line 25L through which exhaust steam 23 discharged from the first auxiliary turbine 22A is supplied as a source of heat to a reboiler 24.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: January 26, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9243517
    Abstract: A carbon dioxide recovery system includes a high-pressure turbine 11, an intermediate-pressure turbine 12, a low-pressure turbine 13, a main boiler 15 that generates steam 14 for driving these turbines, a carbon dioxide recovery unit 24 including a carbon dioxide absorber 21 that absorbs and reduces carbon dioxide in flue gas (emission gas) G emitted from the main boiler 15 using a carbon dioxide absorbent and an absorbent regenerator 23 that regenerates a carbon dioxide absorbent having absorbed the carbon dioxide using a regenerating superheater 22 to obtain a regenerated carbon dioxide absorbent, an auxiliary boiler 30 that generates saturated water vapor 31 to be supplied to the regenerating superheater 22 in the absorbent regenerator 23, and a steam turbine 32 that is driven by steam from the auxiliary boiler 30.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: January 26, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Patent number: 9233336
    Abstract: A carbon dioxide recovery system includes a high-pressure 11, a boiler 15, a carbon dioxide recovery unit 24 that includes a carbon dioxide absorber 21 that absorbs and reduces carbon dioxide in flue gas G emitted from the boiler 15 using a carbon dioxide absorbent and an absorbent regenerator 23 that regenerates a carbon dioxide absorbent having absorbed the carbon dioxide using a regenerating superheater 22 to obtain a regenerated carbon dioxide absorbent, a high-temperature and high-pressure steam extraction line L11 that extracts the high-temperature and high-pressure steam 14 from the boiler 15 before the steam is introduced into the high-pressure turbine 11, an auxiliary turbine 32 that recovers power with the high-temperature and high-pressure steam 14, and a steam supply line L12 that supplies emission steam 33 emitted from the auxiliary turbine 32 to the regenerating superheater 22 to be used as a heat source.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: January 12, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Masaki Iijima
  • Publication number: 20150376097
    Abstract: Provided is a methanol plant that can obtain fresh water from sea water by using, in a seawater desalination device, the exhaust heat discharged in a step for producing methanol from natural gas. The methanol plant is provided with: a heat exchanger (4) that recovers into a thermal medium (for example, seawater) the exhaust heat discharged from a step for producing methanol from a feed stock (for example, natural gas); and a seawater desalinization device (6) that obtains freshwater from seawater using the exhaust heat recovered by means of the thermal medium.
    Type: Application
    Filed: February 26, 2014
    Publication date: December 31, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masaki Iijima, Haruaki Hirayama