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1. 发明专利

DE2343340A1 未知
公开(公告)号：DE2343340A1
公开(公告)日：1974-04-04
申请号：DE2343340
申请日：1973-08-28
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： IIJIMA TOKUJI , NARITA TSUNEO , YOSHIHARA SHIGEO , IKENAGA YOSHIHIRO
IPC分类号： B01D53/50 , B01D53/77 , C02F1/04 , C02F1/06 , C23F14/02 , B01D53/14 , C02B1/04

2. 发明专利

DE2630202A1 未知
公开(公告)号：DE2630202A1
公开(公告)日：1977-02-03
申请号：DE2630202
申请日：1976-07-05
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： HISHINUMA YUKIO , AKIMOTO HIDETOSHI , ARIKAWA YOSHIJIRO , NARITA TSUNEO
IPC分类号： B01D53/56 , F23J15/00 , B01D53/14 , B01D53/00 , B01D53/16

3. 发明专利

JPS60206429A COMPOSITE PLANT OF EXHAUST GAS DESULFURIZATION APPARATUS IN COMBUSTION BOILER 失效
公开(公告)号：JPS60206429A
公开(公告)日：1985-10-18
申请号：JP6215584
申请日：1984-03-31
申请人： BABCOCK HITACHI KK
发明人： MIURA KAZUO , NARITA TSUNEO , TERADA HIROSHI , SHIYOUJI KAZUNORI
IPC分类号： B01D53/50 , B01D53/34 , B01D53/77
摘要： PURPOSE:To reduce the replenishing amount of water, by cooling the recirculation medium reciculated in a wet waste gas desulfurization apparatus while cooling waste gas flowing through a desulfurization apparatus by the recirculation medium and recovering water from high humidity waste gas. CONSTITUTION:In a composite plant equipped with a boiler 1 using a slurry comprising a mixture of coal and water as fuel and a wet waste gas desulfurization apparatus for bringing waste gas generating from the boiler 1 into contact with an absorbent comprising a limestone slurry, an absorbing solution cooling pipe 7 is immersed in the limestone slurry of an absorbing tower 5 to cool the slurry. By this mechanism, moisture carried out of the system by waste gas is reduced. Not only the volume of waste gas is reduced by the cooling of the limestone slurry but also the power consumption of an suction blower 2 is reduced.

4. 发明专利

JPH0947636A REGENERATING TYPE AIR PREHEATER 失效
公开(公告)号：JPH0947636A
公开(公告)日：1997-02-18
申请号：JP20359295
申请日：1995-08-09
申请人： BABCOCK HITACHI KK
发明人： MUKAI MASATO , NARITA TSUNEO
IPC分类号： B01D53/86
摘要： PROBLEM TO BE SOLVED: To reduce the possibility of blocking of a catalyst by acidic ammonium sulfate by disposing an NH, decomposing catalyst on the gas inlet side of an air preheater element. SOLUTION: An NH3 decomposing catalyst 2 is disposed on the gas inlet side, namely the upstream side of an air preheater element 6 of an air preheater 1. The air preheater 1 is arranged on the downstream of a denitration device and outlet gas of the deaeration gas is passed through the air preheater 1 and flowed into a stack in a system. Gaseous exhaust gas is introduced into the air preheater 1, and denitration and NH3 decomposition are carried out by an NH3 decomposing catalyst 2 disposed on an inlet to the air preheater 1. As a result, NOx is 10ppm at the outlet 2 of the NH3 decomposing catalyst, and NH3 is reduced by the amount more than the amount of consumption in denitration and decreased to 5ppm. As the NH3 concentration is lowered as above-mentioned, the possibility of blocking of the air preheater element 6 generated by acidic ammonium sulfate is reduced, and the stabilized operation of the air preheater 1 can be carried out.

5. 发明专利

JPH04354538A CATALYST FOR DENITRIFYING EXHAUST GAS AND EXHAUST GAS TREATING DEVICE 失效
公开(公告)号：JPH04354538A
公开(公告)日：1992-12-08
申请号：JP12896991
申请日：1991-05-31
申请人： BABCOCK HITACHI KK
发明人： MIZOGUCHI TADAAKI , NISHIMURA YASUYUKI , KUWABARA TAKANORI , NISHIMURA TSUKASA , NARITA TSUNEO , SUZAWA KENJI
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01D53/94 , B01J27/053
摘要： PURPOSE:To simultaneously and economically remove the SOx and NOx in exhaust gases with high efficiency by bringing the exhaust gases and metal sult compd. into contact with a carrier consisting of a gypsum-contg. material. CONSTITUTION:An SiO2 compd. and/or Al2O3 compd. as well as lime and gypsum are used as raw materials and water is added to this mixture. After the mixture is kneaded, the mixture is subjected to curing and drying treatments under heating to form a desulfurizing agent. CaSO4 is formed from the limestone contained in this desulfurizing agent and the used desulfurizing agent is used if the desulfurizing agent is brought into contact with the gases contg. the NOx together with the SOx. Further, active components, such as iron, vanadium and copper, are deposited thereon to form a denitrifying catalyst. The carrier increases the gypsum content gradually to increase the acidity when this catalyst is brought into contact with the gases contg. the SOx and NOx. The activity as the denitrifying catalyst is then enhanced and the gases are denitrified with high efficiency. The desulfurization and denitrification are simultaneously executed in this way and the treatment is systematized.

6. 发明专利

JPS5230293A WET METHOD FOR DESULFURIZATION AND DENITROGENATION OF WASTE GAS 失效
公开(公告)号：JPS5230293A
公开(公告)日：1977-03-07
申请号：JP10605875
申请日：1975-09-03
申请人： BABCOCK HITACHI KK
发明人： NARITA TSUNEO , NISHIMURA TAKESHI , KANDA OSAMU , NOZAWA SHIGERU
IPC分类号： B01D53/60 , B01D53/77 , C01F11/36 , C01F11/46
摘要： PURPOSE:A method for simultaneous absorption and treatment of SOx and NOx. can treat large volumes of waste gas by cyclic reusage of absorption liquid at low temperature (30-80 deg.C).

7. 发明专利

JPS528982A PROCESS FOR STRENGTHENING OF ACTIVATION OF ABSORBENTS FOR WET DESULFUR IZATION AND DENITRATION 失效
公开(公告)号：JPS528982A
公开(公告)日：1977-01-24
申请号：JP8444975
申请日：1975-07-11
申请人： BABCOCK HITACHI KK
发明人： NARITA TSUNEO , NISHIMURA TAKESHI , NOZAWA SHIGERU , KANDA OSAMU
IPC分类号： B01D53/60 , B01D53/14 , B01D53/34 , B01D53/77 , B01J19/08
摘要： PURPOSE:The activity of an absorbent containing a specific chelate forming agent for wet desulfurization and denitration is strengthened by reduction treatment.

8. 发明专利

JPH10109017A OPERATION OF DENITRATION DEVICE AND WASTE GAS PURIFYING DEVICE 失效
公开(公告)号：JPH10109017A
公开(公告)日：1998-04-28
申请号：JP26288396
申请日：1996-10-03
申请人： BABCOCK HITACHI KK
发明人： MUKAI MASATO , NARITA TSUNEO
IPC分类号： F23J15/00 , B01D53/56 , B01D53/86 , B01D53/94
摘要： PROBLEM TO BE SOLVED: To prevent the clogging of an air preheater generated by a precipitation of an acidic ammonium sulfate due to an unreacted ammonia or a corrosion of equipment succeeding a low temp. element of the air preheater due to SO3 . SOLUTION: At the time of denitrating a waste gas generated by burning the a fuel containing many sulfur content and vanadium (V) content, for example, fuel oil C, asphalt, natural asphalt, oil coke, etc., a vanadium concn. in a denitration catalyst 7 is increased by sticking of the vanadium incorporated in the waste gas to the denitration catalyst 7, and SO2 oxidation rate is increased with the lapse of an operation time of the denitration device 6. Then a detection of a SO3 concn. is executed at an outlet of the denigration device 6 according to the lapse of the operation time of the denitration device 6, and when an increase in the SO3 concn. at the outlet of the denitration device 6 is recognized, the SO2 oxidation rate is always kept at a low level and a SO3 generating amount is suppressed by controlling a waste gas temp. so that an operation temp. of the denigration device 6 may be decreased gradually from 380 deg.C. Here, the SO2 oxidation rate by the denitration catalyst 7 is affected by the gas temp., for example, when the gas temp. exceeds around 370 deg.C, the oxidation rate has a tendency to rise rapidly.

9. 发明专利

JPS6049012B2 失效
公开(公告)号：JPS6049012B2
公开(公告)日：1985-10-30
申请号：JP11851076
申请日：1976-10-04
申请人： BABCOCK HITACHI KK
发明人： NARITA TSUNEO , ISHIKAWA TOMIHISA
IPC分类号： B01D53/94 , B01D53/86 , B01J8/12

10. 发明专利

JPS6073204A COAL-WATER SLURRY COMBUSTION APPARATUS 失效
公开(公告)号：JPS6073204A
公开(公告)日：1985-04-25
申请号：JP18251383
申请日：1983-09-30
申请人： BABCOCK HITACHI KK
发明人： MIURA KAZUO , NARITA TSUNEO , TERADA HIROSHI , SHIYOUJI KAZUNORI
IPC分类号： B01D53/50 , B01D53/77 , F23B99/00 , F23J15/04
摘要： PURPOSE:To decrease the quantity of supplying water to a system, and the power consumption for an induced fan, by decreasing the wet rate and the volume of exhaust gas, as well as to recover circulating liquid by a cooling pipe while it is circulating through the absorption tower of a desulfurizer, in a boiler system for combustion of coal-water slurry, combined with an exhaust gas desulfurizer of wet type. CONSTITUTION:Exhaust gas generated in a boiler 1 is led into the cooling tower 3 of a wet type exhaust gas desulfurizer, after the temperature in the gas is lowered down to about 80 deg.C by a gas . gas heat exchanger 9. The gas is cooled by cooling water which is circulating through the cooling tower 3 by a circulating pump 4, and then the gas is led into an absorption tower 5, where sulfurous acid in the gas is absorbed by lime- water slurry fed into the absorption tower 5. The purified exhaust gas is heated again in the gas . gas heat exchanger 9 in order to prevent white smoke, and is exhausted outside from a stack 10. In this case, the quantity of cooling water circulated by the pump 4 can be saved by the method of cooling slurry by dipping a cooling pipe 7 in the slurry in the absorption tower 5. Besides, the consumption of power for an induced fan can be saved as much as the volume corresponding to the decreased exhaust gas, by installing an induced fan 2 on the downstream side of an exhaust gas desulfurizer.

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