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21. 发明专利

CA2824740A1 COMBUSTION EXHAUST GAS TREATMENT SYSTEM AND METHOD OF TREATING COMBUSTION EXHAUST GAS 未知
公开(公告)号：CA2824740A1
公开(公告)日：2012-12-27
申请号：CA2824740
申请日：2012-06-19
申请人： BABCOCK HITACHI KK , HITACHI LTD
发明人： SHIMAMURA JUN , KATSUBE TOSHIO , YOKOYAMA KOUICHI , KIDERA YOSHIHIRO , MISHIMA NOBUYOSHI , ORITA HISAYUKI
IPC分类号： B01D53/62 , B01D53/14 , C01B32/50
摘要： This combustion exhaust gas treatment system comprises a heat exchanger (A) for recovering heat in combustion exhaust gas to a heating medium; an absorption tower for absorbing the CO2 contained in combustion exhaust gas to an absorbent; a heat exchanger (B) for imparting the heat recovered by the heating medium to the absorbent that has absorbed CO2; a regeneration tower for expelling from the absorbent that has absorbed CO2, thereby regenerating the absorbent; a flash tank for flash-evaporating the regenerated absorbent; and a heat exchanger (E) for transferring heat from the regenerated absorbent to the absorbent that has absorbed CO2. The combustion exhaust gas treatment system can supply absorbent that has absorbed CO2 from the absorption tower to the regeneration tower, via the heat exchanger (E) and heat exchanger (B) in this order, and can supply regenerated absorbent from the regeneration tower to the absorption tower, via the flash tank and the heat exchanger (E) in this order.

22. 发明专利

CA2498263C EXHAUST SMOKE-PROCESSING SYSTEM 未知
公开(公告)号：CA2498263C
公开(公告)日：2011-05-03
申请号：CA2498263
申请日：2003-09-08
申请人： BABCOCK HITACHI KK
发明人： KIKKAWA HIROFUMI , NAKAMOTO TAKANORI , KATSUBE TOSHIO
IPC分类号： F23J15/00 , F23J15/02 , F23J15/08 , F23L15/00
摘要： An exhaust smoke processing system capable of economically removing heavy metal, comprising a air preheater 3 for heating combustion air by exhaust smoke discharged from a boiler 1, a heat recoverer 11 for heating a heat medium by exhaust smoke discharged from the air preheater 3, a dust collector 4 for collecting soot and dust in exhaust smoke discharged from the heat recoverer 11, a wet-type exhaust smoke processing apparatus for processing exhaust smoke discharged from the dust collector 4, a reheater 13 for heating exhaust smoke discharged from the wet-type exhaust smoke processing apparatus by the heat medium, and a heat medium circulation pipe passage 15 for circulating the heating medium between the reheater 13 and the heat recoverer 11, wherein the heating medium circulation pipe 15 is provided with temperature control means which measures a heavy metal concentration in exhaust smoke discharged from any one or more of the dust collector 4, the wet-type exhaust smoke processing apparatus 6 and the reheater 13, and adjust the temperature of exhaust smoke at an outlet of the heat recoverer 11 such that the measured value falls within a predetermined range.

23. 发明专利

CA2504330C EXHAUST GAS TREATING APPARATUS 未知
公开(公告)号：CA2504330C
公开(公告)日：2010-07-27
申请号：CA2504330
申请日：2003-10-30
申请人： BABCOCK HITACHI KK
发明人： MURAMOTO KOUJI , SAITOU TAKAYUKI , SHIMAZU HIROMICHI , NAKAMOTO TAKANORI , KATSUBE TOSHIO
IPC分类号： F23J15/00 , F23G5/46 , F23J15/02 , F23J15/04 , F23J15/06 , F23J15/08
摘要： The exhaust gas processing device is composed of an air preheater 3 for preheating air for combustion in a combustion device; a gas-gas heater (GGH) heat recovery device (HRD) 4 composed of a heat transfer tube (HTT) for recovering the heat of the exhaust gas to a heat medium; a dust collector 5; a wet-type desulfurization device 7; a GGH re-heater (RH) 8 composed of a htt for heating the exhaust gas at its outlet by using the heat medium supplied from the GGH HRD 4, which are installed in that order from the upstream to the downstream of an exhaust gas duct of the combustion device, and the heat transfer tube of the HRD 4 is squarely arranged in the gas flow direction in such a manner that the exhaust gas flow rate between HTTs adjacent in the direction orthogonal to the gas flow direction is 10 m/s or lower.

24. 发明专利

JP2004154683A Exhaust gas treatment equipment and its operation method 有权
公开(公告)号：JP2004154683A
公开(公告)日：2004-06-03
申请号：JP2002322880
申请日：2002-11-06
申请人： Babcock Hitachi Kk , バブコック日立株式会社
发明人： YOSHIKAWA HIROBUMI , NAKAMOTO TAKANORI , KATSUBE TOSHIO
IPC分类号： F23L15/00 , B01D51/00 , B01D53/50 , B01D53/77 , F23J15/00
CPC分类号： Y02E20/348
摘要： PROBLEM TO BE SOLVED: To provide a method of economically removing sulfuric acid mist. SOLUTION: The exhaust gas treatment equipment is provided with an air pre-heating unit 3 for heating combustion air by exhaust gas discharged from a boiler; a heat recovery unit 11 for heating a heating medium by the exhaust gas; a wet type exhaust gas treatment device 6 for wet-treating the exhaust gas; a re-heating unit 13 for heating the exhaust gas by the heating medium; and a heating medium circulation line 15 for circulating the heating medium between the re-heating unit 13 and the heat recovery unit 11. The dew point of the sulfuric acid mist in the exhaust gas is between the temperature of the exhaust gas at an entrance of the heat recovery unit 11 and the temperature of the exhaust gas at a discharge port of a dust-collector 4 and is adjusted such that it becomes higher than the temperature of the exhaust gas at the discharge port of the dust-collector 4 by 30°C or more. COPYRIGHT: (C)2004,JPO

25. 发明专利

JP2000061257A FLUE GAS DESULFURIZING METHOD AND DEVICE THEREFOR 失效
公开(公告)号：JP2000061257A
公开(公告)日：2000-02-29
申请号：JP23565798
申请日：1998-08-21
申请人： BABCOCK HITACHI KK
发明人： TANIGUCHI KENSHO , NOZAWA SHIGERU , KATSUBE TOSHIO , HASHIMOTO YASUKI , EGASHIRA MICHIO , KATAGAWA ATSUSHI , ISHIZAKA HIROSHI
IPC分类号： B01D53/50 , B01D53/77
摘要： PROBLEM TO BE SOLVED: To provide a wet type desulfurizer and its operation in which an absorbent can be fed so that the concentration of the absorbent in absorbent solution fed into an absorber is fixed even when the specific gravity of filtrate taken out by a gypsum dehydrator changes. SOLUTION: In a filtrate feeding line 10 from a gypsum dehydrator 7, a hydrometer 23 is installed to detect the specific gravity of filtrate fed to an absorbent slurry mixing pit 16. According to the detected specific gravity of the filtrate, the set value of a hydrometer 19 installed in an absorbent feeding line 27 is controlled so that the concentration of the absorbent in the absorbent slurry is fixed. In this way, since a specific gravity signal outputted from the hydrometer 19 becomes a specific gravity signal showing deviation between the set value and the measured value of the specific gravity of the absorbent slurry taking into account a change in the specific gravity of the filtrate, the concentration of the absorbent in the absorbent slurry can be kept at desired concentration, and the absorbent can be fed under the suitable absorbent slurry concentration conditions.

26. 发明专利

JPH11319630A DRY PROCESS ELECTRIC DUCT COLLECTOR AND OPERATION THEREOF 失效
公开(公告)号：JPH11319630A
公开(公告)日：1999-11-24
申请号：JP15389398
申请日：1998-05-19
申请人： BABCOCK HITACHI KK
发明人： KATAGAWA ATSUSHI , KATSUBE TOSHIO , MIYATAKA RYOICHI
IPC分类号： B03C3/36 , B03C3/82
摘要： PROBLEM TO BE SOLVED: To prevent a dry process electric dust collector from being an excessive design at a normal rated operational time and also to prevent concentration of soot and dust at the outlet of the dust collector from being over a regulated value at the overshoot time. SOLUTION: A gas flow passage 4 consisting of plural numbers of chambers arranged in parallel is provided in the dry process electric dust collector 2, and the gas flow passage 4 is provided in excessive one chamber for hammering a dust collection electrode plate, besides the gas flow passage group provided with a space corresponding to the rated gas flow rate at the normal operation time. At the hammering time of the dust collection electrode in the rated gas flow rate time at a periodical normal operation time of respective chambers, a gas flow in the gas flow passage 4 of the excessive one chamber is shut down and exhaust gas of the rated flow rate is subjected to a dust collection treatment without any trouble by utilizing other whole chambers, and in the case that the gas flow rate is over the rated gas flow rate in the overshoot time in a load increasing process of a combustion device, the exhaust gas is introduced to the whole chambers of the gas flow passage 4 including the excessive one chamber to collect the dust, and during this time the periodical hammering of the dust collection electrode in the whole chamber is not performed.

27. 发明专利

JPH11197450A WET DESULFURIZATION EQUIPMENT AND ITS OPERATION METHOD 失效
公开(公告)号：JPH11197450A
公开(公告)日：1999-07-27
申请号：JP841398
申请日：1998-01-20
申请人： BABCOCK HITACHI KK
发明人： NOSAKA HIROYUKI , KATSUBE TOSHIO
IPC分类号： B01D53/50 , B01D53/77
摘要： PROBLEM TO BE SOLVED: To provide a flue desulfurization equipment keeping the slurry concentration in an absorbing solution tank and also keeping the absorbing solution level in the absorbing solution tank within the given range when the operation of extracting intermittently an absorbing solution from the absorbing solution tank and also provide an operation method thereof. SOLUTION: An absorbing solution from an absorbing solution tank 1a containing a lime stone slurry storing the absorbing solution is brought into contact with boiler gas introduced into an absorption column 1 to remove sulfur oxide in gas, and the absorbing solution absorbing the sulfur oxide in exhaust gas is returned to the absorbing solution tank 1a. At that time, the specific gravity of the absorbing solution in the absorbing solution tank 1a is sensed by a specific gravity hydrometer 16, and the feed amount of reinforcing water from a reinforcing water feed line 10 into the absorbing solution is adjusted, and also the absorbing solution extraction amount out of an absorbing solution extraction line 9 of the absorbing solution tank 1a is adjusted based on the sensed value of a liquid level indicator 17 for the absorbing solution in the absorbing solution tank 1a.

28. 发明专利

JPH1199317A FLUE GAS DESULFURIZER AND ITS OPERATION 失效
公开(公告)号：JPH1199317A
公开(公告)日：1999-04-13
申请号：JP5524798
申请日：1998-03-06
申请人： BABCOCK HITACHI KK
发明人： MURAMOTO KOJI , SHIMAZU HIROMICHI , KATSUBE TOSHIO , SAITO TAKAYUKI , YAMAMOTO MASAYUKI
IPC分类号： F23J15/00 , B01D53/50 , B01D53/77 , F23J15/06 , F23J15/08
摘要： PROBLEM TO BE SOLVED: To reduce the quantity of steam fed to a heating medium heater and to improve heat efficiency of an electric power plant by effectively recovering quantity of heat of steam drain of the heating medium heater or a heating medium tank for heating a heating medium of a gas-gas heat exchanger. SOLUTION: In this device, in a heating medium circulating line 13-1 at an inlet of a reheater 8, a directly heated heating medium tank in which steam for heating a heating medium is directly fed into the heating medium to heat the heating medium is installed, and to the heating medium tank installed in the heating medium circulating line 13-1 at the inlet of the reheater 8, steam for heating the heating medium is directly fed so that waste gas temperature at an outlet of the reheater 8 and the lowest heating medium temperature become not less than the set values. Further, a discharge line 55 is installed from a heating medium circulating line 13-2 at the inlet of the reheater 8 so that according to the heating medium level in the tank, the discharge pressure of a pump 14 can be used to discharge the heating medium to outside the system.

29. 发明专利

JPH09271632A SPRAY TYPE ABSORBING COLUMN AND EXHAUST GAS DESULFURIZER 失效
公开(公告)号：JPH09271632A
公开(公告)日：1997-10-21
申请号：JP8263496
申请日：1996-04-04
申请人： BABCOCK HITACHI KK
发明人： HOSHINA SHINICHI , OKURA HAJIME , KATSUBE TOSHIO , NOZAWA SHIGERU
IPC分类号： B01D53/34 , B01D53/18 , B01D53/50 , B01D53/77
摘要： PROBLEM TO BE SOLVED: To hold the liquid pressure in spray piping so as not to exert effect on the spraying of the absorbing solution of an upwardly turned spray nozzle during the operation of a desulfurizer and to wholly extract the absorbing soln. in the spray piping at a time of the stop of the spraying of the absorbing soln. SOLUTION: In the operation of a desulfurizer supplying an absorbing soln. to spray piping 3a equipped with a spray nozzle 4 upwardly spraying the absorbing soln. in order to subject the same to the gas-liquid contact with the exhaust gas within an absorbing tower, a drain branch pipe 14 preventing a large amt. of the absorbing soln. from flowing. out to a place (A-part) becoming largest in bending and draining the absorbing soln. from the spray piping 3a at a time of the stop of the desulfurizer so as not to leave the absorbing soln. in the spray piping 3a at a time of the stop of operation of the desulfurizer as well as to exert no effect on the spray nozzle 4 upwardly spraying the absorbing soln. during the operation of the desulfurizer is provided to the underside of the piping 3a and a resistance element 5 (spray nozzle, automatic valve or orifice) is provided to the leading end of the branch pipe 14.

30. 发明专利

JPH08281056A WET TYPE FLUE GAS DESULFURIZER 失效
公开(公告)号：JPH08281056A
公开(公告)日：1996-10-29
申请号：JP11028595
申请日：1995-04-12
申请人： BABCOCK HITACHI KK
发明人： SHIMAZU HIROMICHI , KATSUBE TOSHIO
IPC分类号： B01D53/34 , B01D53/18 , B01D53/50 , B01D53/77
摘要： PURPOSE: To provide a wet type flue gas desulfurizer which maintains desulfurizing performance and dust removing performance constant, even though an exhaust gas condition is changed at the time of change in load, etc., and also performs an economical operation. CONSTITUTION: A small circulation pump 9 having a capacity smaller than that of a circulation pump 6 of an absorption tower 2 is installed and the absorption liquid slurry is supplied to each spray stage 7 by this small circulation pump 9 via a valve 10. The circulation pump 6 and the small circulation pump 9 are operated in combination.

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