Patents by Inventor Tomio Mimura
Tomio Mimura 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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Patent number: 9211496Abstract: An absorbent according to the present invention absorbs CO2 or H2S contained in flue gas emitted from a power generating plant such as a thermal plant, and contains three or more amine compounds selected from linear or cyclic amine compounds having a primary amino group, and linear or cyclic amine compounds having a secondary amino group. By way of a synergetic effect of the mixture of these compounds, the absorption speed of CO2 or H2S absorption is improved. A small amount of CO2 contained in a large amount of boiler flue gas can be absorbed efficiently.Type: GrantFiled: October 29, 2013Date of Patent: December 15, 2015Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., LTD.Inventors: Yukihiko Inoue, Ryuji Yoshiyama, Tsuyoshi Oishi, Masaki Iijima, Masazumi Tanoura, Tomio Mimura, Yasuyuki Yagi
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Patent number: 8764884Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: GrantFiled: August 8, 2013Date of Patent: July 1, 2014Assignees: Mitsubishi Heavy Industries, Ltd., Kansai Electric Power Co., Inc.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Publication number: 20140056792Abstract: An absorbent according to the present invention absorbs CO2 or H2S contained in flue gas emitted from a power generating plant such as a thermal plant, and contains three or more amine compounds selected from linear or cyclic amine compounds having a primary amino group, and linear or cyclic amine compounds having a secondary amino group. By way of a synergetic effect of the mixture of these compounds, the absorption speed of CO2 or H2S absorption is improved. A small amount of CO2 contained in a large amount of boiler flue gas can be absorbed efficiently.Type: ApplicationFiled: October 29, 2013Publication date: February 27, 2014Applicants: THE KANSAI ELECTRIC POWER CO., INC., MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yukihiko Inoue, Ryuji Yoshiyama, Tsuyoshi Oishi, Masaki Iijima, Masazumi Tanoura, Tomio Mimura, Yasuyuki Yagi
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Publication number: 20130323147Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: ApplicationFiled: August 8, 2013Publication date: December 5, 2013Applicants: THE KANSAI ELECTRIC POWER CO., LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Patent number: 8597418Abstract: An absorbent according to the present invention absorbs CO2 or H2S contained in flue gas emitted from a power generating plant such as a thermal plant, and contains three or more amine compounds selected from linear or cyclic amine compounds having a primary amino group, and linear or cyclic amine compounds having a secondary amino group. By way of a synergetic effect of the mixture of these compounds, the absorption speed of CO2 or H2S absorption is improved. A small amount of CO2 contained in a large amount of boiler flue gas can be absorbed efficiently.Type: GrantFiled: June 17, 2008Date of Patent: December 3, 2013Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.Inventors: Yukihiko Inoue, Ryuji Yoshiyama, Tsuyoshi Oishi, Masaki Iijima, Masazumi Tanoura, Tomio Mimura, Yasuyuki Yagi
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Patent number: 8597412Abstract: A CO2 recovery apparatus according to the present invention includes: an absorber (1003) that brings CO2-containing flue gas (1001A) into counter-current contact with CO2 absorbent (1002) to reduce CO2, and a regenerator (1005) that regenerates rich solution (1004) that has absorbed CO2, in which lean solution (1006) having CO2 reduced in the regenerator (1005) is reused in the absorber (1003). The absorber (1003) further includes a CO2 absorbing unit (1010) that recovers CO2 contained in the flue gas (1001A), and the CO2 absorbent (1002) that has absorbed CO2 is extracted from a rich side of the CO2 absorbing unit (1010) to exterior, cooled, and then supplied to a position nearer to a lean side of the absorber (1003) with respect to the position at which the CO2 absorbent (1002) is extracted.Type: GrantFiled: February 20, 2009Date of Patent: December 3, 2013Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Ltd.Inventors: Hiroshi Tanaka, Toru Takashina, Tsuyoshi Oishi, Masaki Iijima, Tomio Mimura, Kouki Ogura, Yasuyuki Yagi
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Patent number: 8535427Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: GrantFiled: January 25, 2011Date of Patent: September 17, 2013Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Patent number: 8529678Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: GrantFiled: January 25, 2011Date of Patent: September 10, 2013Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Patent number: 8506683Abstract: An absorbent liquid according to the present invention is an absorbent liquid for absorbing CO2 or H2S or both from gas, in which the absorbent liquid includes an alkanolamine as a first compound component, and a second component including a nitrogen-containing compound having in a molecule thereof two members or more selected from a primary nitrogen, a secondary nitrogen, and a tertiary nitrogen or a nitrogen-containing compound having in a molecule thereof all of primary, secondary, and tertiary nitrogens. The absorbent liquid has an excellent absorption capacity performance and an excellent absorption reaction heat performance, as compared to an aqueous solution containing solely an alkanolamine and a nitrogen-containing compound in the same concentration in terms of wt %, and can recover CO2 or H2S or both from gas with smaller energy.Type: GrantFiled: June 11, 2010Date of Patent: August 13, 2013Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.Inventors: Ryuji Yoshiyama, Masazumi Tanoura, Noriko Watari, Shuuji Fujii, Yukihiko Inoue, Mitsuru Sakano, Tarou Ichihara, Masaki Iijima, Tomio Mimura, Yasuyuki Yagi, Kouki Ogura
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Patent number: 8415502Abstract: A reaction column (12) to which a raw material mixture (11) containing a mono-lower-alkylamine (AA: raw material I) and an alkylene oxide (AO: raw material II) is supplied, an unreacted raw material distillation column (14) that separates an unreacted raw material (15) from a reaction product (13a) (containing the unreacted raw material (15), a target reaction product (monomer) (17), and a by-product (dimer) (18)), and a flash drum (16) to which a reaction product (13b) (containing the target reaction product (monomer) (17) and the by-product (dimer) (18)) is supplied, the flash drum (16) separating a mono-lower-alkyl monoalkanolamine (monomer, the target reaction product 17) in a gas state, are provided.Type: GrantFiled: October 24, 2008Date of Patent: April 9, 2013Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc., Nippon Nyukazai Co., Ltd.Inventors: Tatsuya Tsujiuchi, Shinya Tachibana, Tsuyoshi Oishi, Tomio Mimura, Yasuyuki Yagi, Hidehisa Mita, Ryosuke Araki, Kenji Saito
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Patent number: 8409339Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: GrantFiled: January 25, 2011Date of Patent: April 2, 2013Assignees: Mitsubishi Heavy Industries, Ltd., Kansai Electric Power Co., Inc.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Patent number: 8231719Abstract: An absorbent liquid according to the present invention is an absorbent liquid for absorbing CO2 or H2S or both from gas, in which the absorbent liquid includes an alkanolamine as a first compound component, and a second component including a nitrogen-containing compound having in a molecule thereof two members or more selected from a primary nitrogen, a secondary nitrogen, and a tertiary nitrogen or a nitrogen-containing compound having in a molecule thereof all of primary, secondary, and tertiary nitrogens. The absorbent liquid has an excellent absorption capacity performance and an excellent absorption reaction heat performance, as compared to an aqueous solution containing solely an alkanolamine and a nitrogen-containing compound in the same concentration in terms of wt %, and can recover CO2 or H2S or both from gas with smaller energy.Type: GrantFiled: June 12, 2006Date of Patent: July 31, 2012Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.Inventors: Ryuji Yoshiyama, Masazumi Tanoura, Noriko Watari, Shuuji Fujii, Yukihiko Inoue, Mitsuru Sakano, Tarou Ichihara, Masaki Iijima, Tomio Mimura, Yasuyuki Yagi, Kouki Ogura
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Patent number: 8226748Abstract: A CO2 reducing system (10A) is constituted by a low-temperature CO2 reducing apparatus (11-1) that includes a low-temperature absorber (1006-1) that reduces at least one of CO2 and H2S by bringing flue gas (1002) including at least one of CO2 and H2S into contact with a low-temperature absorbing solution (1005-1), a low-temperature regenerator (1008-1) that regenerates a low-temperature rich solution (1007-1), a low-temperature rich-solution supply line (12-1) that feeds the low-temperature rich solution (1007-1) to the low-temperature regenerator (1008-1), and a low-temperature lean-solution supply line (13-1) that feeds a low-temperature lean solution (1009-1) to the low-temperature absorber (1006-1) from the low-temperature regenerator (1008-1); and a high-temperature CO2 reducing apparatus (11-2) that is arranged on a side at which the flue gas (1002) is discharged, and that has the same configuration as the low-temperature CO2 reducing apparatus (11-1).Type: GrantFiled: June 17, 2008Date of Patent: July 24, 2012Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.Inventors: Yukihiko Inoue, Ryuji Yoshiyama, Tsuyoshi Oishi, Masaki Iijima, Masazumi Tanoura, Tomio Mimura, Kouki Ogura, Yasuyuki Yagi
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Patent number: 8147593Abstract: An absorbing solution according to the present invention is an absorbing solution that absorbs CO2 or H2S in gas or both of CO2 and H2S. The absorbing solution is formed by adding desirably 1 to 20 weight percent of tertiary monoamine to a secondary-amine composite absorbent such as a mixture of secondary monoamine and secondary diamine. Consequently, it is possible to control degradation in absorbing solution amine due to oxygen or the like in gas. As a result, it is possible to realize a reduction in an absorption loss, prevention of malfunction, and a reduction in cost. This absorbing solution is suitably used in an apparatus for removing CO2 or H2S or both of CO2 and H2S.Type: GrantFiled: April 3, 2006Date of Patent: April 3, 2012Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.Inventors: Tomio Mimura, Yasuyuki Yagi, Kouki Ogura, Masaki Iijima, Toru Takashina, Hiroshi Tanaka, Takuya Hirata
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Patent number: 8137441Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A reclaimer heats the lean solution that is produced in the regeneration tower to produce a condensed waste-product from the lean solution by condensing a depleted material contained in the lean solution, and removes the condensed waste-product. A cooler cools the condensed waste-product.Type: GrantFiled: October 31, 2007Date of Patent: March 20, 2012Assignees: Mitsubishi Heavy Industries Ltd., The Kansai Electric Power Co., IncInventors: Masaki Iijima, Tomio Mimura, Yasuyuki Yagi
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Publication number: 20110120315Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: ApplicationFiled: January 25, 2011Publication date: May 26, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., KANSAI ELECTRIC POWER CO., LTD.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Publication number: 20110113965Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: ApplicationFiled: January 25, 2011Publication date: May 19, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., KANSAI ELECTRIC POWER CO., LTD.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Publication number: 20110113966Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: ApplicationFiled: January 25, 2011Publication date: May 19, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., KANSAI ELECTRIC POWER CO., LTD.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Patent number: 7918926Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.Type: GrantFiled: March 14, 2005Date of Patent: April 5, 2011Assignees: Mitsubishi Heavy Industries, Ltd., Kansai Electric Power Co., Inc.Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
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Publication number: 20110071318Abstract: A reaction column (12) to which a raw material mixture (11) containing a mono-lower-alkylamine (AA: raw material I) and an alkylene oxide (AO: raw material II) is supplied, an unreacted raw material distillation column (14) that separates an unreacted raw material (15) from a reaction product (13a) (containing the unreacted raw material (15), a target reaction product (monomer) (17), and a by-product (dimer) (18)), and a flash drum (16) to which a reaction product (13b) (containing the target reaction product (monomer) (17) and the by-product (dimer) (18)) is supplied, the flash drum (16) separating a mono-lower-alkyl monoalkanolamine (monomer, the target reaction product 17) in a gas state, are provided.Type: ApplicationFiled: October 24, 2008Publication date: March 24, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC., NIPPON NYUKAZAI CO., LTD.Inventors: Tatsuya Tsujiuchi, Shinya Tachibana, Tsuyoshi Oishi, Tomio Mimura, Yasuyuki Yagi, Hidehisa Mita, Ryosuke Araki, Kenji Saito