专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

CA2206672A1 HEAT TREATED ACTIVE CARBONS FOR USE IN DENITRATION, PROCESSES FOR PRODUCING SAME, DENITRATION METHOD USING SAME, AND DENITRATION SYSTEMS USING SAME 未知
公开(公告)号：CA2206672A1
公开(公告)日：1997-04-10
申请号：CA2206672
申请日：1996-09-24
申请人： MITSUBISHI HEAVY IND LTD , OSAKA GAS CO LTD
发明人： SETOGUCHI TOSHIHIKO , KASUH TAKAHIRO , MOCHIDA ISAO , KOBAYASHI NORIHISA , YASUTAKE AKINORI , YOSHIKAWA MASAAKI
IPC分类号： B01D53/86 , B01J21/18 , B01D53/56
摘要： This invention relates to a technique for removing nitrogen oxides (NO x) present in exhaust gases discharged from boilers and the like. When the temperature of the exhaust gas is 100.degree.C or below, a heat-treated active carbon produced by heat-treating a raw active carbon at 600 to 1,200'C in a non-oxidizing atmosphere so as to remove oxygen-containing functional groups present at the surfaces thereof and thereby reduce the atomic surface oxygen/surface carbon ratio to 0.05 or less is preferably used. When the temperature of the exhaust gas exceeds 100'C, a heat-treated active carbon produced by heat-treating a raw active carbon at 600 to 1,200.degree.C in a non-oxidizing atmosphere and activating the surfaces thereof with sulfuric acid or nitric acid to impart oxidizing oxygen-containing functional groups thereto is preferably used.

2. 发明专利

CA2260136C EXHAUST GAS DENITRATION METHOD 未知
公开(公告)号：CA2260136C
公开(公告)日：2003-07-08
申请号：CA2260136
申请日：1997-07-10
申请人： MITSUBISHI HEAVY IND LTD , OSAKA GAS CO LTD
发明人： NAKAMURA HITOSHI , KOBAYASHI NORIHISA , SETOGUCHI TOSHIHIKO , YASUTAKE AKINORI , KASUH TAKAHIRO , YOSHIKAWA MASAAKI , MOCHIDA ISAO
IPC分类号： B01D53/56 , B01D53/54 , B01D53/86 , B01D53/94
摘要： This invention provides a process for the denitration of combustion exhaust gas which is suitable for use as a countermeasure while the exhaust gas has a low temperature (e.g., during the starting of combustion equipment) or for the denitration of a low-temperature portion of the exhaust gas. The aforesaid denitration process is a process for the denitration of combustion exhaust gas by passing the exhaust gas through an ammonia reduction denitrator, which comprises providing the exhaust gas flow path with a bypass having a low-temperature denitrator installed therein, on the downstream side of the ammonia reduction denitrator; while the exhaust gas has a low temperature, passing the exhaust gas through the bypass to perform the denitration thereof by means of the low-temperature denitrator; when the ammonia reduction denitrator has came to function properly, closing the bypass to perform the denitration of the exhaust gas by means of the ammonia reduction denitrator; and regenerating the catalyst within the low-temperature denitrator while the bypass is closed. In the aforesaid denitration process, a plurality of parallel-connected low-temperature denitrators may be installed in a section of the exhaust gas flow path where the exhaust gas temperature ranges from room temperature to 200.degree.C,and successively changed over in such a -23- way that denitration and catalyst regeneration are alternately performed. -24-

3. 发明专利

DE69637992D1 未知
公开(公告)号：DE69637992D1
公开(公告)日：2009-09-24
申请号：DE69637992
申请日：1996-09-24
申请人： OSAKA GAS CO LTD , MITSUBISHI HEAVY IND LTD
发明人： MOCHIDA ISAO , YASUTAKE AKINORI , SETOGUCHI TOSHIHIKO , KOBAYASHI NORIHISA , KASUH TAKAHIRO , YOSHIKAWA MASAAKI
IPC分类号： B01J21/18 , B01D53/56 , B01D53/86

4. 发明专利

CA2206672C HEAT TREATED ACTIVE CARBONS FOR USE IN DENITRATION, PROCESSES FOR PRODUCING SAME, DENITRATION METHOD USING SAME, AND DENITRATION SYSTEMS USING SAME 未知
公开(公告)号：CA2206672C
公开(公告)日：2001-05-01
申请号：CA2206672
申请日：1996-09-24
申请人： OSAKA GAS CO LTD , MITSUBISHI HEAVY IND LTD
发明人： YASUTAKE AKINORI , MOCHIDA ISAO , YOSHIKAWA MASAAKI , KASUH TAKAHIRO , KOBAYASHI NORIHISA , SETOGUCHI TOSHIHIKO
IPC分类号： B01D53/86 , B01J21/18 , B01D53/56
摘要： This invention relates to a technique for removing nitrogen oxides (NO x) present in exhaust gases discharged from boilers and the like. When the temperature of the exhaust gas is 100.degree.C or below, a heat-treated active carbon produced by heat-treating a raw active carbon at 600 to 1,200'C in a non-oxidizing atmosphere so as to remove oxygen-containing functional groups present at the surfaces thereof and thereby reduce the atomic surface oxygen/surface carbon ratio to 0.05 or less is preferably used. When the temperature of the exhaust gas exceeds 100'C, a heat-treated active carbon produced by heat-treating a raw active carbon at 600 to 1,200.degree.C in a non-oxidizing atmosphere and activating the surfaces thereof with sulfuric acid or nitric acid to impart oxidizing oxygen-containing functional groups thereto is preferably used.

5. 发明专利

DE69738296D1 未知
公开(公告)号：DE69738296D1
公开(公告)日：2007-12-27
申请号：DE69738296
申请日：1997-07-10
申请人： MITSUBISHI HEAVY IND LTD , OSAKA GAS CO LTD
发明人： MOCHIDA ISAO , YASUTAKE AKINORI , SETOGUCHI TOSHIHIKO , KOBAYASHI NORIHISA , NAKAMURA HITOSHI , KASUH TAKAHIRO , YOSHIKAWA MASAAKI
IPC分类号： B01D53/56 , B01D53/86 , B01D53/54 , B01D53/94
摘要： A method for denitration of combustion exhaust gas suitable for countermeasure for a low temperature exhaust gas produced at a start-up of a combustion device or for denitration of a low temperature part of the exhaust gas. The denitration method, in which denitration is performed by passing a combustion exhaust gas through an ammonia reduction denitration apparatus, comprises the steps of installing a bypass provided with a low temperature denitration apparatus and disposed on the downstream side of the ammonia reduction denitration apparatus in an exhaust gas flow passage, causing the low temperature denitration apparatus to perform denitration by passing the exhaust gas through the bypass when an exhaust gas temperature is low, causing the ammonia reduction denitration apparatus to perform denitration at a point of time when the ammonia reduction denitration apparatus comes to function fully, and regenerating a catalyst of the low temperature denitration apparatus while the bypass is closed. Further, the denitration method can perform denitration and regeneration of the catalyst by successively switching between low temperature denitration apparatuses of more than one systems which are installed in parallel in an area where a temperature of the exhaust gas in the exhaust gas flow passage ranges from room temperature to 200 DEG C.

6. 发明专利

AT378101T 未知
公开(公告)号：AT378101T
公开(公告)日：2007-11-15
申请号：AT97930743
申请日：1997-07-10
申请人： MITSUBISHI HEAVY IND LTD , OSAKA GAS CO LTD
发明人： MOCHIDA ISAO , YASUTAKE AKINORI , SETOGUCHI TOSHIHIKO , KOBAYASHI NORIHISA , NAKAMURA HITOSHI , KASUH TAKAHIRO , YOSHIKAWA MASAAKI
IPC分类号： B01D53/56 , B01D53/86 , B01D53/54 , B01D53/94
摘要： A method for denitration of combustion exhaust gas suitable for countermeasure for a low temperature exhaust gas produced at a start-up of a combustion device or for denitration of a low temperature part of the exhaust gas. The denitration method, in which denitration is performed by passing a combustion exhaust gas through an ammonia reduction denitration apparatus, comprises the steps of installing a bypass provided with a low temperature denitration apparatus and disposed on the downstream side of the ammonia reduction denitration apparatus in an exhaust gas flow passage, causing the low temperature denitration apparatus to perform denitration by passing the exhaust gas through the bypass when an exhaust gas temperature is low, causing the ammonia reduction denitration apparatus to perform denitration at a point of time when the ammonia reduction denitration apparatus comes to function fully, and regenerating a catalyst of the low temperature denitration apparatus while the bypass is closed. Further, the denitration method can perform denitration and regeneration of the catalyst by successively switching between low temperature denitration apparatuses of more than one systems which are installed in parallel in an area where a temperature of the exhaust gas in the exhaust gas flow passage ranges from room temperature to 200 DEG C.

7. 发明专利

CA2260136A1 EXHAUST GAS DENITRATION METHOD 未知
公开(公告)号：CA2260136A1
公开(公告)日：1998-01-22
申请号：CA2260136
申请日：1997-07-10
申请人： MITSUBISHI HEAVY IND LTD , OSAKA GAS CO LTD
发明人： KOBAYASHI NORIHISA , NAKAMURA HITOSHI , KASUH TAKAHIRO , MOCHIDA ISAO , YOSHIKAWA MASAAKI , SETOGUCHI TOSHIHIKO , YASUTAKE AKINORI
IPC分类号： B01D53/56 , B01D53/54 , B01D53/86 , B01D53/94
摘要： This invention provides a process for the denitration of combustion exhaust gas which is suitable for use as a countermeasure while the exhaust gas has a low temperature (e.g., during the starting of combustion equipment) or for the denitration of a low-temperature portion of the exhaust gas. The aforesaid denitration process is a process for the denitration of combustion exhaust gas by passing the exhaust gas through an ammonia reduction denitrator, which comprises providing the exhaust gas flow path with a bypass having a low-temperature denitrator installed therein, on the downstream side of the ammonia reduction denitrator; while the exhaust gas has a low temperature, passing the exhaust gas through the bypass to perform the denitration thereof by means of the low-temperature denitrator; when the ammonia reduction denitrator has came to function properly, closing the bypass to perform the denitration of the exhaust gas by means of the ammonia reduction denitrator; and regenerating the catalyst within the low-temperature denitrator while the bypass is closed. In the aforesaid denitration process, a plurality of parallel-connected low-temperature denitrators may be installed in a section of the exhaust gas flow path where the exhaust gas temperature ranges from room temperature to 200.degree.C,and successively changed over in such a -23- way that denitration and catalyst regeneration are alternately performed. -24-

8. 发明公开

EP0913185A4 EXHAUST GAS DENITRATION METHOD 失效
标题翻译：方法为排放的脱硝
公开(公告)号：EP0913185A4
公开(公告)日：2002-07-24
申请号：EP97930743
申请日：1997-07-10
申请人： MITSUBISHI HEAVY IND LTD , OSAKA GAS CO LTD
发明人： MOCHIDA ISAO , YASUTAKE AKINORI , SETOGUCHI TOSHIHIKO , KOBAYASHI NORIHISA , NAKAMURA HITOSHI , KASUH TAKAHIRO , YOSHIKAWA MASAAKI
IPC分类号： B01D53/56 , B01D53/54 , B01D53/86 , B01D53/94
CPC分类号： B01D53/8631
摘要： A method for denitration of combustion exhaust gas suitable for countermeasure for a low temperature exhaust gas produced at a start-up of a combustion device or for denitration of a low temperature part of the exhaust gas. The denitration method, in which denitration is performed by passing a combustion exhaust gas through an ammonia reduction denitration apparatus, comprises the steps of installing a bypass provided with a low temperature denitration apparatus and disposed on the downstream side of the ammonia reduction denitration apparatus in an exhaust gas flow passage, causing the low temperature denitration apparatus to perform denitration by passing the exhaust gas through the bypass when an exhaust gas temperature is low, causing the ammonia reduction denitration apparatus to perform denitration at a point of time when the ammonia reduction denitration apparatus comes to function fully, and regenerating a catalyst of the low temperature denitration apparatus while the bypass is closed. Further, the denitration method can perform denitration and regeneration of the catalyst by successively switching between low temperature denitration apparatuses of more than one systems which are installed in parallel in an area where a temperature of the exhaust gas in the exhaust gas flow passage ranges from room temperature to 200 DEG C.

9. 发明专利

AT439185T 未知
公开(公告)号：AT439185T
公开(公告)日：2009-08-15
申请号：AT96931288
申请日：1996-09-24
申请人： OSAKA GAS CO LTD , MITSUBISHI HEAVY IND LTD
发明人： MOCHIDA ISAO , YASUTAKE AKINORI , SETOGUCHI TOSHIHIKO , KOBAYASHI NORIHISA , KASUH TAKAHIRO , YOSHIKAWA MASAAKI
IPC分类号： B01J21/18 , B01D53/56 , B01D53/86

10. 发明专利

DE69738296T2 未知
公开(公告)号：DE69738296T2
公开(公告)日：2008-09-18
申请号：DE69738296
申请日：1997-07-10
申请人： MITSUBISHI HEAVY IND LTD , OSAKA GAS CO LTD
发明人： MOCHIDA ISAO , YASUTAKE AKINORI , SETOGUCHI TOSHIHIKO , KOBAYASHI NORIHISA , NAKAMURA HITOSHI , KASUH TAKAHIRO , YOSHIKAWA MASAAKI
IPC分类号： B01D53/56 , B01D53/86 , B01D53/54 , B01D53/94
摘要： A method for denitration of combustion exhaust gas suitable for countermeasure for a low temperature exhaust gas produced at a start-up of a combustion device or for denitration of a low temperature part of the exhaust gas. The denitration method, in which denitration is performed by passing a combustion exhaust gas through an ammonia reduction denitration apparatus, comprises the steps of installing a bypass provided with a low temperature denitration apparatus and disposed on the downstream side of the ammonia reduction denitration apparatus in an exhaust gas flow passage, causing the low temperature denitration apparatus to perform denitration by passing the exhaust gas through the bypass when an exhaust gas temperature is low, causing the ammonia reduction denitration apparatus to perform denitration at a point of time when the ammonia reduction denitration apparatus comes to function fully, and regenerating a catalyst of the low temperature denitration apparatus while the bypass is closed. Further, the denitration method can perform denitration and regeneration of the catalyst by successively switching between low temperature denitration apparatuses of more than one systems which are installed in parallel in an area where a temperature of the exhaust gas in the exhaust gas flow passage ranges from room temperature to 200 DEG C.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式