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2. 发明专利

CZ323295A3 WET-TYPE DESULFURIZING DEVICE OF CHIMNEY GASES AND METHOD OF USING A SOLID DESULFURIZING AGENT 未知
公开(公告)号：CZ323295A3
公开(公告)日：1996-04-17
申请号：CZ323295
申请日：1995-05-11
申请人： BABCOCK HITACHI KK
发明人： KIKKAWA HIROFUMI , NAKAJIMA FUMITO , KAKU HIROYUKI , TAKAMOTO SHIGEHITO , ISHIZAKA HIROSHI , NOZAWA SHIGERU , NISHIMURA MASAKATSU , NAKAMOTO TAKANORI
IPC分类号： B01D53/34 , B01D53/50 , C01F11/06
摘要： A wet-type flue gas desulfurization method and plant making use of a solid desulfurizing agent in which exhaust gas exhausted from a combustion apparatus such as a boiler is brought into contact with absorbing liquid to absorb sulfur oxide from the exhaust gas into the absorbing liquid followed by neutralization of the absorbing liquid containing the sulfur oxide thus absorbed. The solid desulfurizing agent is selectively retained in an absorbing liquid neutralizing zone and the absorbing liquid, containing water as a main constituent and solid products formed from the absorbed sulfur oxide, is selectively removed from the neutralizing zone. In the neutralizing zone the upward flow of the absorbing liquid, optionally augmented by an upward flow of air or water, forms a fluidized bed of limestone particles, thereby preventing coating of the limestone by gypsum and thereby retaining reactivity of limestone. According to the present invention, coexistence of Al and F in the absorbing liquid seldom deteriorates the desulfurizing performance. Further, it is possible to reduce power and cost required to grind limestone and to achieve a higher desulfurizing performance.

3. 发明专利

AU6437094A Wet type flue gas desulfurizer 未知
公开(公告)号：AU6437094A
公开(公告)日：1994-11-08
申请号：AU6437094
申请日：1994-04-07
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , NAKAJIMA FUMITO , NISHIMURA MASAKATSU , KAKU HIROYUKI , NOZAWA SHIGERU , TAKAMOTO SHIGEHITO , NAKAMOTO TAKANORI , KIKKAWA HIROFUMI , ISHIZAKA HIROSHI , KATAGAWA ATSUSHI , KON MITSUHARU , YAMAMOTO MASAYUKI , YOSHIDA KUNIKATSU
IPC分类号： B01D53/34 , B01D47/06 , B01D53/18 , B01D53/50 , B01D53/78
摘要： PCT No. PCT/JP94/00583 Sec. 371 Date Mar. 22, 1995 Sec. 102(e) Date Mar. 22, 1995 PCT Filed Apr. 7, 1994 PCT Pub. No. WO94/23826 PCT Pub. Date Oct. 27, 1994An elongated absorber housing, including an inlet duct and an outlet duct, is integrally provided on an upper portion of a circulation tank. The absorber is a self-supporting structure supported by only the circulation tank. At least the furthest upstream spraying stage in a spraying zone in the inlet duct includes spray pipes provided with spray nozzles for spraying an absorbing liquid in a direction cocurrent with gas flow, and at least the furthest downstream spraying stage includes spray nozzles for spraying the absorbing liquid in a direction countercurrent to the gas flow. The absorber is an integral structure in which the upper portion of the circulation tank forms a part of the duct, whereby the absorber is self-supportable and, moreover, is of a simple structure, giving it high strength and eliminating of the need for provision of fitments for supporting the absorber.

4. 发明专利

DE3382685D1 未知
公开(公告)号：DE3382685D1
公开(公告)日：1993-06-24
申请号：DE3382685
申请日：1983-12-01
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , NISHIMURA TSUKASA , NISHIMURA MASAKATSU , HASHIMOTO TAIKI , KANDA OSAMU , NOZAWA SHIGERU , SHIBATA KENJI
IPC分类号： B01D53/34 , B01D53/50 , B01D53/68 , B01D53/77 , B01D61/44 , C01F11/46 , C02F1/469 , F28D15/02
摘要： In a flue gas desulfurization process comprising a cooling step of cooling and dedusting a sulfur oxides (SO x )-containing flue gas (1) an absorption step of contacting in an adsorption tower (7) the flue gas cooled in the cooling step with a limestone slurry to absorb and remove SO x in the gas, and an oxidation step of oxidizing the resulting slurry containing calcium sulphite and/or calcium hydrogen sulfite, by contacting it with an oxygen-containing gas to form a gypsum slurry from which gypsum is separated, in order to subject slurry of the absorption tower (7) to oxidation treatment to thereby obtain gypsum, without passing the slurry through a pH-adjusting tank and an oxidation tower, a process is employed wherein a portion of the flue gas at the exit of a cooling tower (5), freed from dust and acidic gases is sucked by a fan (201), followed by contacting it with the slurry in a reactor (202) to neutralize unreacted CaCO₃ with SO x in the flue gas and also oxidize calcium sulfite and/or calcium hydrogen sulfite formed herein and in the absorption tower (7) by oxygen in the flue gas.

5. 发明专利

DE3772257D1 未知
公开(公告)号：DE3772257D1
公开(公告)日：1991-09-26
申请号：DE3772257
申请日：1987-04-22
申请人： BABCOCK HITACHI KK
发明人： ISHIGURO OKIKAZU , NISHIMURA MASAKATSU , NOZAWA SHIGERU , KAMOGAWA HIROMI , KAWANO SHIGEYOSHI
IPC分类号： B01D53/34 , B01D53/50 , B01D53/77

6. 发明专利

DK129091A 未知
公开(公告)号：DK129091A
公开(公告)日：1991-07-02
申请号：DK129091
申请日：1991-07-02
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , NISHIMURA TSUKASA , NISHIMURA MASAKATSU , HASHIMOTO TAIKI , KANDA OSAMU , NOZAWA SHIGERU , SHIBATA KENJI
IPC分类号： B01D53/34 , B01D53/50 , B01D53/68 , B01D53/77 , B01D61/44 , C01F11/46 , C02F1/469 , F28D15/02
摘要： In a flue gas desulfurization process comprising a cooling step of cooling and dedusting a sulfur oxides (SO x )-containing flue gas (1) an absorption step of contacting in an adsorption tower (7) the flue gas cooled in the cooling step with a limestone slurry to absorb and remove SO x in the gas, and an oxidation step of oxidizing the resulting slurry containing calcium sulphite and/or calcium hydrogen sulfite, by contacting it with an oxygen-containing gas to form a gypsum slurry from which gypsum is separated, in order to subject slurry of the absorption tower (7) to oxidation treatment to thereby obtain gypsum, without passing the slurry through a pH-adjusting tank and an oxidation tower, a process is employed wherein a portion of the flue gas at the exit of a cooling tower (5), freed from dust and acidic gases is sucked by a fan (201), followed by contacting it with the slurry in a reactor (202) to neutralize unreacted CaCO₃ with SO x in the flue gas and also oxidize calcium sulfite and/or calcium hydrogen sulfite formed herein and in the absorption tower (7) by oxygen in the flue gas.

7. 发明专利

DK340284D0 未知
公开(公告)号：DK340284D0
公开(公告)日：1984-07-11
申请号：DK340284
申请日：1984-07-11
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , NISHIMURA TSUKASA , NISHIMURA MASAKATSU , HASHIMOTO TAIKI , KANDA OSAMU , NOZAWA SHIGERU , SHIBATA KENJI
IPC分类号： B01D53/34 , B01D53/50 , B01D53/68 , B01D53/77 , B01D61/44 , C01F11/46 , C02F1/469 , F28D15/02 , B01D
摘要： In a flue gas desulfurization process comprising a cooling step of cooling and dedusting a sulfur oxides (SO x )-containing flue gas (1) an absorption step of contacting in an adsorption tower (7) the flue gas cooled in the cooling step with a limestone slurry to absorb and remove SO x in the gas, and an oxidation step of oxidizing the resulting slurry containing calcium sulphite and/or calcium hydrogen sulfite, by contacting it with an oxygen-containing gas to form a gypsum slurry from which gypsum is separated, in order to subject slurry of the absorption tower (7) to oxidation treatment to thereby obtain gypsum, without passing the slurry through a pH-adjusting tank and an oxidation tower, a process is employed wherein a portion of the flue gas at the exit of a cooling tower (5), freed from dust and acidic gases is sucked by a fan (201), followed by contacting it with the slurry in a reactor (202) to neutralize unreacted CaCO₃ with SO x in the flue gas and also oxidize calcium sulfite and/or calcium hydrogen sulfite formed herein and in the absorption tower (7) by oxygen in the flue gas.

8. 发明专利

DK174369B1 Flue gas desulphurisation process - uses absorption in limestone slurry, producing gypsum in different grades and treating effluent internally 未知
公开(公告)号：DK174369B1
公开(公告)日：2003-01-13
申请号：DK128991
申请日：1991-07-02
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , NISHIMURA TSUKASA , NISHIMURA MASAKATSU , HASHIMOTO TAIKI , KANDA OSAMU , NOZAWA SHIGERU , SHIBATA KENJI
IPC分类号： B01D53/34 , C01F11/46 , G01F11/46
摘要： Flue gas desulphurisation process comprises: (a) cooling and dedusting; (b) contacting with a limestone slurry, to remove SOx by absorption; (c) adjustment of pH of the slurry, now contg. Ca(HSO3)2 and CaSO3 produced in step (b); (d) contacting the slurry with an O2-contg. gas, giving gypsum (e) concentrating the gypsum slurry; (f) adjusting the concn. of the conc. gypsum slurry; (g) centrifugally sepg. gypsum from its slurry; and (h) treating the effluent discharged from step (a). An alternative process differs only in that slurry from step (b) is fed to step (a), for reaction of excess limestone with SOx. Pref. in step (c), the pH is pref. adjusted to 4-5 by H2SO4 addn. In step (d), O2 is added at 1.5-3.0 times the theoretically required rate. The concn. of gypsum in the conc. slurry is pref. 15-25%. The gypsum concn. in step (b), arising from fine particles escaping removal in step (g) and then being returned to step (b), is 5% or more.

9. 发明专利

BR9404928A 未知
公开(公告)号：BR9404928A
公开(公告)日：1999-06-15
申请号：BR9404928
申请日：1994-04-07
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , KON MITSUHARU , NAKAJIMA FUMITO , KAKU HIROYUKI , TAKAMOTO SHIGEHITO , KIKKAWA HIROFUMI , ISHIZAKA HIROSHI , YOSHIDA KUNIKATSU , NISHIMURA MASAKATSU , NOZAWA SHIGERU , NAKAMOTO TAKANORI , KATAGAWA ATSUSHI , YAMAMOTO MASAYUKI
IPC分类号： B01D53/34 , B01D47/06 , B01D53/18 , B01D53/50 , B01D53/78
摘要： PCT No. PCT/JP94/00583 Sec. 371 Date Mar. 22, 1995 Sec. 102(e) Date Mar. 22, 1995 PCT Filed Apr. 7, 1994 PCT Pub. No. WO94/23826 PCT Pub. Date Oct. 27, 1994An elongated absorber housing, including an inlet duct and an outlet duct, is integrally provided on an upper portion of a circulation tank. The absorber is a self-supporting structure supported by only the circulation tank. At least the furthest upstream spraying stage in a spraying zone in the inlet duct includes spray pipes provided with spray nozzles for spraying an absorbing liquid in a direction cocurrent with gas flow, and at least the furthest downstream spraying stage includes spray nozzles for spraying the absorbing liquid in a direction countercurrent to the gas flow. The absorber is an integral structure in which the upper portion of the circulation tank forms a part of the duct, whereby the absorber is self-supportable and, moreover, is of a simple structure, giving it high strength and eliminating of the need for provision of fitments for supporting the absorber.

10. 发明专利

MX9505374A PLANTA DE DESULFURAMIENTO DE GAS DE COMBUSTION DEL TIPO HUMEDO Y METODO PARA HACER USO DE UN AGENTE DESULFURANTE SOLIDO. 未知
公开(公告)号：MX9505374A
公开(公告)日：1998-03-31
申请号：MX9505374
申请日：1995-05-11
申请人： BABCOCK HITACHI KK
发明人： KIKKAWA HIROFUMI , NAKAJIMA FUMITO , KAKU HIROYUKI , TAKAMOTO SHIGEHITO , ISHIZAKA HIROSHI , NOZAWA SHIGERU , NISHIMURA MASAKATSU , NAKAMOTO TAKANORI
IPC分类号： B01D53/50 , C01F11/06 , B01D53/34 , B01D53/18 , B01D53/54
摘要： Gas de escape expulsado de un equipo de combustion tal como una caldera, se lleva a contacto con un líquido absorbente para absorber oxido de azufre del gas de escape al líquido absorbente, partículas de caliza que tienen diámetros más grandes son selectivamente dejadas en una zona en donde el líquido absorbente que ha absorbido el oxido de azufre en el gas de escape se neutraliza y el líquido absorbente que contiene agua y yeso formado por el oxido de azufre como constituyentes principales, se drenan selectivamente de la zona de neutralizacion para ser llevados a contactos con el gas de escape otra vez. En ese momento, el líquido absorbente que es llevado a contacto con el gas de escape que contiene agua como el componente principal de manera que hay la posibilidad de una gran disminucion de proceso desulfurante debido a una variacion de la carga de la caldera, etc. De conformidad con la presente invencion, sin embargo, se seleccionan más de un ítem para deteccion de carga de una caldera, el contenido de azufre en el quemador de combustible en la caldera, un régimen de flujo del gas de escape, concentracion del SO2 de entrada en la planta de desulfuramiento, concentracion del SO2 de salida en la planta de desulfuramiento o un valor del pH del líquido de absorcion en la zona de neutralizacion o una pérdida de presion en la zona de neutralizacion, momento de torsion de un dispositivo de agitacion, concentracion de solidos del líquido de absorcion, gravedad específica del líquido de absorcion y viscosidad del líquido de absorcion para regular más de un ítem seleccionado de un régimen de flujo del líquido de absorcion circulado para ser llevado a contacto con el gas de escape, una cantidad del agente desulfurante solido para ser suministrado al líquido de absorcion, un diámetro de partícula del agente desulfurante solido y velocidad de agitacion del agente desulfurante solido en la zona de neutralizacion, con lo cual se controla la concentracion de SO2 de salida de la planta de desulfuramiento para caer en la escala de un valor fijo predeterminado.

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