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51. 发明专利

JPS5783636A Coal-gasifying power generation plant 失效
标题翻译：煤气发电厂
公开(公告)号：JPS5783636A
公开(公告)日：1982-05-25
申请号：JP15951880
申请日：1980-11-14
申请人： Hitachi Ltd
发明人： SUGITA NARIHISA , UCHIYAMA YOSHIHIRO , TAMURA ZENSUKE
IPC分类号： F01K23/02 , F01K23/06 , F02C3/28 , F02C3/30 , F02C6/00
CPC分类号： F01K23/068 , Y02E20/18
摘要： PURPOSE: To improve a thermal efficiency of a plant which performs gasification by means of an oxygen produced by an oxygen producer disposed therein, by feeding a nitrogen into a gas turbine as a working medium which is generated in a process of the production of the oxygen.
CONSTITUTION: An oxygen producing plant provides a means of cooling an air 11 to be liquefied by the effect of Joule Tomson and separately producing an oxygen 12 and nitrogen 13 because of a difference between their boiling points. The produced oxygen 12 is fed to a coal gasifying plant 2 to partially oxidize a coal 14, thereby generating a coal gas 15. After passing through a gas refining plant 13, the coal gas 15 is turned into a fuel gas 16, which is thereafter fed to a gas turbine combustor 5. On the other hand, the nitrogen 13 is mixed with an air 11 in a mixer 17, boosted by a compressor 4 and fed to the combustor 5. A burning gas 19 in the combustor 5 is delivered to a gas turbine 6 to work. When the nitrogen 13 and the air 11 are mixed, the temperature of the resultant mixture gas is reduced so that the compressor 4 is decelerated. A thermal efficiency may be increased as much as a decrement of the deceleration.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过将氮气输送到作为生产氧气的过程中产生的工作介质的燃气轮机中，提高通过由设置在其中的氧气生产器产生的氧进行气化的设备的热效率。构成：氧气生产设备提供了通过焦耳汤姆森的作用冷却待液化的空气11的手段，由于它们的沸点之间的差异，分开产生氧气12和氮气13。生成的氧气12被供给到煤气化装置2，以部分地氧化煤14，从而产生煤气15.在通过气体精炼装置13之后，煤气15变成燃料气体16 供给到燃气轮机燃烧器5.另一方面，氮13与混合器17中的空气11混合，由压缩机4加压并供给到燃烧器5.燃烧器5中的燃烧气体19被输送到燃气轮机6工作。当氮13和空气11混合时，所得混合气体的温度降低，使得压缩机4减速。热效率可以随着减速度的减少而增加。

52. 发明专利

JPS566009A POWER PLANT UTILIZING WASTE HEAT 失效
公开(公告)号：JPS566009A
公开(公告)日：1981-01-22
申请号：JP8133479
申请日：1979-06-29
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： KITAHARA TAKASHI , FUEDA TAKASHI , IWAKI KIYOTA , UMAGOE ITSUO , KURODA MICHIO , SAKAGUCHI HARUICHIROU , TSUKAHARA SATOSHI , AKATSU YASUAKI , SUGITA NARIHISA , MORI TADAO , NAKAMURA SHIYOUZOU
IPC分类号： F01K25/10
摘要： PURPOSE:To obtain a compact and efficient power plant, by adding a loop for heating turbine operating medium directly by use of waste heat in a power plant including an intermediate heating medium loop and a turbine operating medium loop. CONSTITUTION:A portion of turbine operating liquid medium 20 from pump 19 is carried to turbine operating medium heater 26 disposed downstreams of intermediate heating medium heater 8. After medium 20 is evaporated in heater 26, it is mixed with steam supplied from direct heat exchanger 10 and the carried to turbine 12. In this system, if thermal conditions of heating medium 7 are determined, heat is extracted from heater 26 to the power plant in the temperature range lower than an upper limit permitting direct heating of turbine operating medium, depending on the properties of turbine operating medium. On the other hand, in the temperature range higher than the upper limit, heat is exchanged at heat exchanger 8. With such an arrangement, a more compact and efficient power plant can be obtained for a given heat source.

53. 发明专利

JPS54162043A CONTROLLING METHOD FOR POWER GENERATION PLANT WHICH UTILIZES LOW BOILING POINT MEDIUM STEAM AND ITS APPARATUS 失效
公开(公告)号：JPS54162043A
公开(公告)日：1979-12-22
申请号：JP7085478
申请日：1978-06-14
申请人： HITACHI LTD
发明人： NAKAMURA SHIYOUZOU , SAKAGUCHI HARUICHIROU , TSUKAHARA SATOSHI , AKATSU YASUAKI , SUGITA NARIHISA , KURODA MICHIO , KANEKO KOUJIROU
IPC分类号： F01K25/10 , F01K13/02
摘要： PURPOSE:To prevent thermal reaction of low boiling point medium by controlling the flow rate of low boiling point medium supplied to a direct type heat exchanger and controlling the temperature of intermediate thermal medium supplied to a heater. CONSTITUTION:Intermediate thermal medium is supplied with a fixed speed to a heater 2 in which waste heat gas 1 passes, by a circulation pump 5. The temperature of the intermediate thermal medium which is heated by passing through a heater 2 is detected by a temperature detector 3 arranged at the exit of the heater 2, and the medium is supplied to a direct type heat exchanger 6 to which low boiling point medium is supplied through an intermediate thermal medium feeding pipe 3. The output 15 of the temperature detector 13 is applied to a flow rate adjusting valve controlling apparatus 14, and the turning of a flow-rate adjusting valve 11 is controlled. This turning is kept larger as the temperature of the intermediate thermal medium which is detected by the temperature detector 13 becomes higher.

54. 发明专利

JPS54150763A HEATING SIDE FLUID SUPPLY METHOD TO HEAT EXCHANGER 失效
公开(公告)号：JPS54150763A
公开(公告)日：1979-11-27
申请号：JP5889578
申请日：1978-05-19
申请人： HITACHI LTD
发明人： SUGITA NARIHISA , TSUKAHARA SATOSHI , NAKAMURA SHIYOUZOU , AKATSU YASUAKI , SAKAGUCHI HARUICHIROU , KANEKO KOUJIROU , KURODA MICHIO
IPC分类号： F28F27/00
摘要： PURPOSE:To prevent heat reaction etc. of low boiling point medium by cutting the supply of heated fluid between the temperature detecting part and a heat exchanger when the temperature of the heating side fluid at an inlet of the heat exchanger is higher that the fixed value. CONSTITUTION:The temperature of heating side fluid 1, being supplied to a heat exchanger 2, is detected by a temperature detector 4, and the detected signal is sent to a damper controller 6. When the detected temperature is lower than the thermal cracking point of Freon, heating side fluid flows into the heat exchanger 2 with a damper 8 closed and a damper 7 open. Reversely, when the detected temperature is higher than the thermal cracking point of Freon, heating side fluid does not flow into the heat exchanger 2 but flows out passing through a damper 8 of a branch pipe 5 with the damper 8 open and the damper 7 closed. The thermal cracking of low boiling point medium being thus prevented, structural materials such as heat conduction pipe etc. are kept from corrosion.

55. 发明专利

JP2001193413A COMBINED PLANT AND ITS OPERATING METHOD 失效
公开(公告)号：JP2001193413A
公开(公告)日：2001-07-17
申请号：JP2000371480
申请日：2000-12-01
申请人： HITACHI LTD
发明人： SUGITA NARIHISA , SASAKI TOSHIHIKO , NAKAMURA SHOZO , NOGUCHI YOSHIKI , HOIZUMI SHINICHI , SEIKI NOBUHIRO , IKEGUCHI TAKASHI
IPC分类号： F01D25/12 , F01K23/10 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To enhance cooling efficiency in a cooling part and to reduce the supply flow rate of a cooling medium, in a cooling system for cooling the cooling part of a turbine by extracting steam from a steam turbine. SOLUTION: In this combined plant provided with a steam system composed of a gas turbine system, a exhaust heat recovery boiler and the steam turbine, and for recovering steam after cooling in the steam system by cooling a high temperature part of the gas turbine system by steam extracted from the steam turbine, a cooling device for cooling the steam is provided in a piping for supplying steam extracted from the steam turbine to the high temperature part of the gas turbine system.

56. 发明专利

JPH11132055A EXHAUST GAS RECIRCULATION TYPE COMBINED PLANT 失效
公开(公告)号：JPH11132055A
公开(公告)日：1999-05-18
申请号：JP22783198
申请日：1998-08-12
申请人： HITACHI LTD
发明人： UTAMURA MOTOAKI , HOIZUMI SHINICHI , TAKEDA TAIJI , SASAKI TOSHIHIKO , KOMATSU HIDEAKI , KIRIKAMI SEIICHI , SUZUMURA TAKESHI , SASADA TETSUO , IKEGUCHI TAKASHI , SUGITA NARIHISA
IPC分类号： F01K23/10 , F02C3/30 , F02C3/34 , F02C6/18 , F02C7/08 , F02C9/18
摘要： PROBLEM TO BE SOLVED: To restrain variation of a gas-turbine exhaust gas temperature and minimize reduction of an evaporation amount during load reduction, by adjusting a gas turbine exhaust gas amount returned to a compressor inlet in order to restrain reduction of the gas-turbine exhaust gas temperature following the load reduction of a combined plant. SOLUTION: In a combined cycle plant consisting of a gas turbine 3, an exhaust heat recovery boiler 4, and a steam turbine 5, electric power is determined by using a fuel amount control valve 7 for controlling a fuel amount injected into a combustor 2 and a recirculation amount controlling means 10 as operation ends, and by adjusting opening by a total controlling device 8. In this total controlling device 8, a function generator FG1 derives an output signal S1 according to a load requiring signal Ld, and a function generator FG2 estimates a combustion temperature from an exhaust gas temperature and a compressor outlet pressure. The output signal S1 is modified from the estimated value, and based on the modified output signal, the recirculation amount controlling means 10 is controlled through an adjuster PI3.

57. 发明专利

JPH0926117A INCINERATION SYSTEM 失效
公开(公告)号：JPH0926117A
公开(公告)日：1997-01-28
申请号：JP17583595
申请日：1995-07-12
申请人： HITACHI LTD
发明人： OKUZAWA TSUTOMU , SUGITA NARIHISA , KOYAMA KAZUHITO , HATAMIYA SHIGEO , AJIRO YASUKO , YAMADA AKIRA , KAJI RYUICHI , TOKUNAGA KENJI
IPC分类号： F23G5/00 , F23G5/24 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To melt ashes and reduce disposal cost by injection an oxidizing agent into the ashes discharged from an incinerator for combustion, and attaching an ash-melting furnace to a part of the incinerator. SOLUTION: The refuse discharged from a hopper 1 is conveyed by a refuse supply machine 3 and loaded on a stoker 4a and moved to a stoker 4b. The refuse, which is moved on the stoker 4b is moved by the stoker 4b while it is being burnt and then the refuse is moved on a stoker 4c. The refuse, which is moved on the stoker 4c, enters the final combustion stage and is turned into ashes and discharged into an ash melting furnace 6. The oxygen or oxygen rich air from an oxidizing agent-manufacturing device 5 is blown into the ashes discharge into the ash-melting furnace 6 so that the ashes may be burnt and molten by remaining combustion heat of unburnt carbon contents in the ashes and ash itself. The molten ashes are collected into an ash molten article vessel 7. The exhausted gas generated during this work, joins into an exhaust gas treatment system of an incinerator 2 so that they may be treated together with the exhaust gas of the incinerator 2.

58. 发明专利

JPH07332601A OPERATION METHOD FOR EXHAUST HEAT RECOVERY BOILER 失效
公开(公告)号：JPH07332601A
公开(公告)日：1995-12-22
申请号：JP13009694
申请日：1994-06-13
申请人： HITACHI LTD
发明人： SEIKI NOBUHIRO , SUGITA NARIHISA , AKIYAMA KOSEI
IPC分类号： F22B1/18 , F28D21/00
摘要： PURPOSE:To improve the heat transfer rate of the interior of the heat transfer pipe of a vaporizer, to shorten a starting time, and to prevent the damage of the vaporizer heat transfer pipe owing to a thermal stress by a method wherein water in the vaporizer of a exhaust heat recovery boiler is forcibly circulated by a circulation pump. CONSTITUTION:A vaporizer branch line 7 to branch circulation water and effect mutual confluence again is arranged at a vaporizer downcommer 6 of a vaporizer 3. A valve b10 is provided between the branch part and the confluence part of the vaporizer downcomer 6 and a circulation pump 8 and a valve a9 are arranged at a vaporizer branch line 7. Thus, by forcibly circulating water in the vaporizer 3 of an exhaust heat recovery boiler 1 by a circulation pump 8, a heat transmission rate in the heat transfer pipe of the vaporizer is increased, a starting time is shortened, the damage of the heat transfer pipe of the vaporizer owing to a thermal stress is prevented from occurring.

59. 发明专利

JPH07286186A COAL GASIFICATION POWER GENERATION PLANT 失效
公开(公告)号：JPH07286186A
公开(公告)日：1995-10-31
申请号：JP8127694
申请日：1994-04-20
申请人： HITACHI LTD
发明人： SUGITA NARIHISA , MORIHARA ATSUSHI , TAMURA ZENSUKE , SASAKI TOSHIHIKO
IPC分类号： F02C3/28 , C10J3/46 , F02C3/20
摘要： PURPOSE:To obtain a coal gasification power generation plant capable of improving power generation efficiency with reduced motive power necessary for oxygen production because oxygen necessary for coal gasification can be reduced in addition to securing the temperature needed for converting coal ash into slag in a coal gasification oven to operate the oven stably. CONSTITUTION:Plural oxidizing agent feed systems differing in height from one another are installed inside a coal gasification oven, and in-oven temperature is controlled so as to rise to a level higher than the melting point of coal ash on the lower part of the oven and keep at a level so as not to melt the coal ash on the upper part. As a means of such temperature control, the oxygen concentration of the oxidizing agent to be fed from the feed system being the closest to the stag tap is made higher than those of the oxidizing agents fed from the other systems.

60. 发明专利

JPH06101502A GAS TURBINE SYSTEM 失效
公开(公告)号：JPH06101502A
公开(公告)日：1994-04-12
申请号：JP25143992
申请日：1992-09-21
申请人： HITACHI LTD
发明人： SUGITA NARIHISA , SEIKI NOBUHIRO , SASAKI TOSHIHIKO
IPC分类号： F01K23/10 , F02C9/00 , F02C9/16 , F02C9/28 , F02C9/50
摘要： PURPOSE:To provide a gas turbine system with which the exhaust gas temp. of the gas turbine is constant even under its partial loaded operation, which is free from temp. change in the exhaust heat collecting system, and can well comply with a rapid change in the load. CONSTITUTION:A low pressure compressor 25 is installed at the inlet to a gas turbine compressor 1, and at the rated point, a high pressure air is supplied to the compressor inlet. In compliance with decrease of the load, the supply air pressure due to the low pressure compressor 25 is dropped, and the rate of flow through compressor is decreased while the exhaust gas temp. of gas turbine 3 is controlled with the supply fuel amount to a combustor 2. This permits keeping constant the exhaust gas temp. of the gas turbine 3 when it is in partially loaded operation, to achieve a gas turbine system which can well comply with a rapid partial load change.

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