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公开(公告)号：FI851263L
公开(公告)日：1985-10-24
申请号：FI851263
申请日：1985-03-28
Applicant: BABCOCK HITACHI KK
Inventor： MORITA SHIGEKI , MASAI TADAHISA , NAKASHITA SHIGETO , UEMURA TOSHIO , KODA FUMIO , NAWATA TSUYOSHI
Abstract: A coal combustion apparatus capable of improving NO x reduction to a large extent is provided, which apparatus comprises a pulverized coal-feeding pipe (abbreviated to coal pipe) inserted into a burner throat on the lateral wall of a combustion furnace and for feeding the coal and air into the furnace; a means for feeding the coal and air into the coal pipe; a secondary air passageway formed between the coal pipe and a secondary air-feeding pipe provided on the outer peripheral side of the coal pipe; a ternary air passageway formed on the outer peripheral side of the secondary air-feeding pipe; a means for feeding air or an oxygen-containing gas into the secondary air passageway and that into the ternary air passageway; and a bluff body having a cross-section of a L-letter form provided at the tip end of the coal pipe.
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公开(公告)号：FI851263A0
公开(公告)日：1985-03-28
申请号：FI851263
申请日：1985-03-28
Applicant: BABCOCK HITACHI KK
Inventor： MORITA SHIGEKI , MASAI TADAHISA , NAKASHITA SHIGETO , UEMURA TOSHIO , KODA FUMIO , NAWATA TSUYOSHI
Abstract: A coal combustion apparatus capable of improving NO x reduction to a large extent is provided, which apparatus comprises a pulverized coal-feeding pipe (abbreviated to coal pipe) inserted into a burner throat on the lateral wall of a combustion furnace and for feeding the coal and air into the furnace; a means for feeding the coal and air into the coal pipe; a secondary air passageway formed between the coal pipe and a secondary air-feeding pipe provided on the outer peripheral side of the coal pipe; a ternary air passageway formed on the outer peripheral side of the secondary air-feeding pipe; a means for feeding air or an oxygen-containing gas into the secondary air passageway and that into the ternary air passageway; and a bluff body having a cross-section of a L-letter form provided at the tip end of the coal pipe.
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公开(公告)号：FI86911B
公开(公告)日：1992-07-15
申请号：FI851263
申请日：1985-03-28
Applicant: BABCOCK HITACHI KK
Inventor： MORITA SHIGEKI , MASAI TADAHISA , NAKASHITA SHIGETO , UEMURA TOSHIO , KODA FUMIO , NAWATA TSUYOSHI
Abstract: A coal combustion apparatus capable of improving NO x reduction to a large extent is provided, which apparatus comprises a pulverized coal-feeding pipe (abbreviated to coal pipe) inserted into a burner throat on the lateral wall of a combustion furnace and for feeding the coal and air into the furnace; a means for feeding the coal and air into the coal pipe; a secondary air passageway formed between the coal pipe and a secondary air-feeding pipe provided on the outer peripheral side of the coal pipe; a ternary air passageway formed on the outer peripheral side of the secondary air-feeding pipe; a means for feeding air or an oxygen-containing gas into the secondary air passageway and that into the ternary air passageway; and a bluff body having a cross-section of a L-letter form provided at the tip end of the coal pipe.
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公开(公告)号：CA1281240C
公开(公告)日：1991-03-12
申请号：CA559853
申请日：1988-02-25
Applicant: BABCOCK HITACHI KK
Inventor： MASAI TADAHISA , MORITA SHIGEKI , NAKASHITA SHIGETO
Abstract: A combustion apparatus for low concentration NOx for burning gas, oil and coal along the same axis, having overcome the drawbacks of the prior art, without hindering the whirling of the air and also having prevented clogging of the nozzle and combustion vibration is provided, which apparatus is provided with a means for carrying pulverized coal by a primary air, a means for feeding a gas fuel through a gas nozzle, a means for separating combustion air into a secondary air and a tertiary air and feeding these airs, and a means for feeding and spraying an oil, and which apparatus is characterized by providing an annular space part between the flow paths of the secondary air and the tertiary air; and also arranging the gas nozzle penetrating through the annular space part in a movable manner in the axial direction.
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公开(公告)号：DE3766374D1
公开(公告)日：1991-01-10
申请号：DE3766374
申请日：1987-01-06
Applicant: HITACHI LTD , BABCOCK HITACHI KK
Inventor： AZUHATA SHIGERU , NARATO KIYOSHI , HIGASHIYAMA KAZUTOSHI , KOBAYASHI HIRONOBU , ARASHI NORIO , INADA TOORU , SOHMA KENICHI , OHTSUKA KEIZOU , TAKAHASHI YOSHITAKA , KODA FUMIO , MASAI TADAHISA , TANIKAWA MASAKIYO , KAWANO KEI
Abstract: A method of combusting a coal-water mixture fuel. The mixture is atomized into a conically-shaped primary pre-combustion chamber (4). Primary air is supplied, at a rate smaller than that required for complete burning of the mixture and in the form of a swirl about the axis of the jet of the atomized mixture, from the peripheral portion of the primary pre-combustion chamber (4) into a secondary pre-combustion chamber (5) connected to said primary pre-combustion chamber (4), thus forming a region of low pressure around the jet of the mixture. The region of low pressure serves to induce the atmosphere gas from the secondary pre-combustion chamber (5) of higher temperature back into the primary pre-combustion chamber (4) of a lower temperature, so that the water content of the mixture is evaporated and the mixture is ignited by the heat of the hot atmosphere gas. Then, the mixture is burnt in the secondary pre-combustion chamber (5) in the presence of the remainder portion of the primary air, at a comparatively small air-to-ratio, so that a region of a reducing atmosphere is formed to suppress the generation of NOx. Then, secondary air is supplied, in the form of a swirl about the axis of the jet of the mixture and at a rate sufficient to completely burn the mixture, into the furnace (9) connected to the secondary pre-combustion chamber (5), thus completely combusting the coal-water mixture.
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Patent Agency Ranking
公开(公告)号：NO161344C
公开(公告)日：1989-08-02
申请号：NO851597
申请日：1985-04-22
Applicant: BABCOCK HITACHI KK
Inventor： MORITA SHIGEKI , MASAI TADAHISA , NAKASHITA SHIGETO , UEMURA TOSHIO , KOUDA FUMIO , NAWATA TSUYOSHI
Abstract: A coal combustion apparatus capable of improving NO x reduction to a large extent is provided, which apparatus comprises a pulverized coal-feeding pipe (abbreviated to coal pipe) inserted into a burner throat on the lateral wall of a combustion furnace and for feeding the coal and air into the furnace; a means for feeding the coal and air into the coal pipe; a secondary air passageway formed between the coal pipe and a secondary air-feeding pipe provided on the outer peripheral side of the coal pipe; a ternary air passageway formed on the outer peripheral side of the secondary air-feeding pipe; a means for feeding air or an oxygen-containing gas into the secondary air passageway and that into the ternary air passageway; and a bluff body having a cross-section of a L-letter form provided at the tip end of the coal pipe.
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公开(公告)号：NO161344B
公开(公告)日：1989-04-24
申请号：NO851597
申请日：1985-04-22
Applicant: BABCOCK HITACHI KK
Inventor： MORITA SHIGEKI , MASAI TADAHISA , NAKASHITA SHIGETO , UEMURA TOSHIO , KOUDA FUMIO , NAWATA TSUYOSHI
Abstract: A coal combustion apparatus capable of improving NO x reduction to a large extent is provided, which apparatus comprises a pulverized coal-feeding pipe (abbreviated to coal pipe) inserted into a burner throat on the lateral wall of a combustion furnace and for feeding the coal and air into the furnace; a means for feeding the coal and air into the coal pipe; a secondary air passageway formed between the coal pipe and a secondary air-feeding pipe provided on the outer peripheral side of the coal pipe; a ternary air passageway formed on the outer peripheral side of the secondary air-feeding pipe; a means for feeding air or an oxygen-containing gas into the secondary air passageway and that into the ternary air passageway; and a bluff body having a cross-section of a L-letter form provided at the tip end of the coal pipe.
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公开(公告)号：NO851597L
公开(公告)日：1985-10-24
申请号：NO851597
申请日：1985-04-22
Applicant: BABCOCK HITACHI KK
Inventor： MORITA SHIGEKI , MASAI TADAHISA , NAKASHITA SHIGETO , UEMURA TOSHIO , KOUDA FUMIO , NAWATA TSUYOSHI
Abstract: A coal combustion apparatus capable of improving NO x reduction to a large extent is provided, which apparatus comprises a pulverized coal-feeding pipe (abbreviated to coal pipe) inserted into a burner throat on the lateral wall of a combustion furnace and for feeding the coal and air into the furnace; a means for feeding the coal and air into the coal pipe; a secondary air passageway formed between the coal pipe and a secondary air-feeding pipe provided on the outer peripheral side of the coal pipe; a ternary air passageway formed on the outer peripheral side of the secondary air-feeding pipe; a means for feeding air or an oxygen-containing gas into the secondary air passageway and that into the ternary air passageway; and a bluff body having a cross-section of a L-letter form provided at the tip end of the coal pipe.
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公开(公告)号：JP2579474B2
公开(公告)日：1997-02-05
申请号：JP2660087
申请日：1987-02-07
Applicant: BABCOCK HITACHI KK
Inventor： TAKAHASHI YOSHITAKA , MASAI TADAHISA , KODA FUMIO
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公开(公告)号：JPH0619223B2
公开(公告)日：1994-03-16
申请号：JP25674085
申请日：1985-11-18
Applicant: BABCOCK HITACHI KK
Inventor： TAKAHASHI YOSHITAKA , KODA FUMIO , SAKAMOTO KIMYA , KAWANO TAKASHI , NOZAWA MASAHITO , MASAI TADAHISA
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