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1. 发明授权

KR850001200B1 배연탈황법 失效
公开(公告)号：KR850001200B1
公开(公告)日：1985-08-20
申请号：KR810002169
申请日：1981-06-15
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , ARASHI NORIO , HISHINUMA YUKIO , GOMI KENICHI , AKIMOTO HIDETOSHI , IINUMA HAJIME
IPC分类号： B01D53/34 , B01D53/02 , B01D53/50 , B01D53/81 , C01B17/60

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

DE2613417A1 未知
公开(公告)号：DE2613417A1
公开(公告)日：1976-10-21
申请号：DE2613417
申请日：1976-03-29
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： HISHINUMA YUKIO , AKIMOTO HIDETOSHI , KAJI RYUICHI , NAKAJIMA FUMITO , ARIKAWA YOSHIJIRO
IPC分类号： B01D53/56 , B01D53/77 , B01D53/34 , B01D53/14 , B01D53/16
摘要： Nitrogen oxides are removed from a flue gas by wet process, where the flue gas is contacted with a solution of transition metal complex compounds capable of reacting with oxygen in the presence of oxygen, thereby forming oxygen complexes, and the nitrogen oxides are oxidized and absorbed by the oxygen complexes.

4. 发明专利

DE2448647A1 未知
公开(公告)号：DE2448647A1
公开(公告)日：1975-04-24
申请号：DE2448647
申请日：1974-10-11
申请人： HITACHI LTD
发明人： HISHINUMA YUKIO , AKIMOTO HIDETOSHI , TAMURA ZENSUKE , NAKAJIMA FUMIO
IPC分类号： B01D53/86 , B01D53/94 , B01J8/18 , B01J27/00 , B01J27/043 , B01J27/28 , B01J38/48 , F23J15/00 , F23J5/10
摘要： Nitrogen oxides (NOx) are removed from combustion waste gases by injecting gas (NH3) into the combustion waste gases in the presence of a metallic catalyst to deoxidize the nitrogen oxides to nitrogen and water, within a reaction tower having the catalysts moving through the reaction tower, so that thereafter the dust may be separated from the catalysts and the catalysts may be regenerated continuously, so that the regenerated catalysts may be returned to the reaction tower. The catalyst moves in a substantially closed path, and preferable downwardly through the reaction tower, with the ammonia gas and combustion waste gases moving in cross current through the reaction tower, with mixing being enhanced by a plurality of angled baffle plates. Regeneration is accomplished by washing the catalysts, particularly ferrous catalysts with water to remove ferric sulfates, thereafter providing ferrous sulfates on the surface of the ferrous catalysts, and thereafter heating the catalysts with combustion gases separate from the ammonia gases, to dry the catalysts prior to their moving into the portion of the reaction tower having therein the mixed ammonia gas and combustion waste gases.

5. 发明专利

DE3170388D1 PROCESS FOR DRY DESULFURIZATION OF FLUE GAS 未知
公开(公告)号：DE3170388D1
公开(公告)日：1985-06-13
申请号：DE3170388
申请日：1981-06-16
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , GOMI KENICHI , ARASHI NORIO , AKIMOTO HIDETOSHI , IINUMA HAJIME , KANDA OSAMU , HISHINUMA YUKIO
IPC分类号： B01D53/34 , B01D53/02 , B01D53/50 , B01D53/81 , C01B17/60
摘要： Sulfur oxides contained in the flue gas from coal-fired boiler are adsorbed by an adsorbent prepared by dry-distilling a portion of fuel coal satisfying at least one of requirements of an ash content lower than 15% by weight and a fixed carbon content of at least 50% by weight, thereby producing semi-coke, and activating the semi-coke by steam, and then the sulfur oxides-adsorbed adsorbent is heated to desorb the adsorbed sulfur oxides at a high concentration. The desorbed sulfur oxides are passed through a bed of semi-coke before the activation to recover the sulfur oxides as elemental sulfur.

6. 发明专利

FR2373327A1 未知
公开(公告)号：FR2373327A1
公开(公告)日：1978-07-07
申请号：FR7737255
申请日：1977-12-09
申请人： HITACHI LTD
发明人： AZUHATA SHIGERU , AKIMOTO HIDETOSHI , KIKUCHI HIDEO , HISHINUMA YUKIO , OSHIMA RYOICHIRO , ARIKAWA YOSHIJIRO
IPC分类号： B01D53/56 , B01D53/34
摘要： A hot gas containing nitrogen oxides is admixed with ammonia and hydrogen peroxide to reduce the nitrogen oxides to nitrogen and water. Reduction reaction of the nitrogen oxides by ammonia is considerably promoted in a temperature range of 400 DEG to 800 DEG C. by the addition of hydrogen peroxide, and also ammonia present in excess of the nitrogen oxides is decomposed thereby, eliminating an unreacted ammonia effluent.

7. 发明专利

DE2733723A1 未知
公开(公告)号：DE2733723A1
公开(公告)日：1978-02-02
申请号：DE2733723
申请日：1977-07-26
申请人： HITACHI LTD
发明人： AZUHATA SHIGERU , KIKUCHI HIDEO , AKIMOTO HIDETOSHI , HISHINUMA YUKIO , ARIKAWA YOSHIJIRO
IPC分类号： B01D53/56 , B01D53/34
摘要： Nitrogen oxides in a combustion flue gas are removed by reduction in a gaseous phase at a low temperature in the absence of any catalyst by adding urea and an oxidizing agent for decomposition of urea, such as ozone, nitric acid, hydrogen peroxide, chlorine, chlorine dioxide, or oxy acids of chlorine or their salts. NOx removal can be carried out in a very simplified manner with high percent NOx removal.

8. 发明专利

AU535596B2 PUMPABLE COAL SLURRY PREPARATION 未知
公开(公告)号：AU535596B2
公开(公告)日：1984-03-29
申请号：AU8576182
申请日：1982-07-09
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KAJI RYUICHI , HISHINUMA YUKIO , MURANAKA YASUSHI , AKIMOTO HIDETOSHI , NAKAJIMA FUMITO
IPC分类号： B65G53/30 , C10L1/32 , C10L10/18 , F17D1/16

9. 发明专利

DE3031286A1 未知
公开(公告)号：DE3031286A1
公开(公告)日：1981-06-25
申请号：DE3031286
申请日：1980-08-19
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： MATSUDA SHIMPEI , KATO AKIRA , MORI TOSHIKATSU , KUMAGAI TERUO , HISHINUMA YUKIO , AKIMOTO HIDETOSHI , NAKAJIMA FUMITO
IPC分类号： B01D53/86 , B01J23/40 , C01B17/78 , B01D53/36
摘要： A coal or petroleum combustion flue gas containing sulfur oxides and dust is treated by contacting the flue gas with a sulfur dioxide-oxidizing catalyst, thereby converting sulfur dioxide to sulfur trioxide, allowing the resulting sulfur trioxide to react with components of dust, absorbing the trioxide into the dust as a sulfate, and removing the dust. Catalytic oxidation of sulfur dioxide can be efficiently carried out at a low temperature and sulfur oxides can be efficiently removed from the flue gas.

10. 发明专利

CA1089195A PROCESS FOR REMOVING NITROGEN OXIDES FROM GAS BY AMMONIA 未知
公开(公告)号：CA1089195A
公开(公告)日：1980-11-11
申请号：CA292595
申请日：1977-12-07
申请人： HITACHI LTD
发明人： AZUHATA SHIGERU , AKIMOTO HIDETOSHI , KIKUCHI HIDEO , HISHINUMA YUKIO , OSHIMA RYOICHIRO , ARIKAWA YOSHIJIRO
IPC分类号： B01D53/56 , B01D53/34
摘要： PROCESS FOR REMOVING NITROGEN OXIDES FROM GAS BY AMMONIA A hot gas containing nitrogen oxides is admixed with ammonia and hydrogen peroxide to reduce the nitrogen oxides to nitrogen and water. Reduction reaction of the nitrogen oxides by ammonia is considerably promoted in a temperature range of 400.degree. to 800.degree.C by the addition of hydrogen peroxide, and also ammonia present in excess of the nitrogen oxides is decomposed thereby, eliminating an unreacted ammonia effluent.

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