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4. 发明专利

JP2000081201A ONCE-THROUGH BOILER 失效
公开(公告)号：JP2000081201A
公开(公告)日：2000-03-21
申请号：JP25097198
申请日：1998-09-04
申请人： EBARA BOILER KK
发明人： ABE TADAAKI , TORIKAI TAKANORI
IPC分类号： F23D14/14 , F22B21/06 , F22B21/12
摘要： PROBLEM TO BE SOLVED: To provide a once-through boiler in which a plane combustion burner that enables a reduction of NOx and a miniaturization as a burner is employed and which is smaller, has a small installation area, and has a high heat transfer efficiency. SOLUTION: In a once-through boiler which has a burner 26, in which a plurality of water tubes 3 are approximately annularly juxtaposed in a mutually separated manner between a top header 1 and a bottom header 2, and in which the circumference of a water tube row 4 constituted with the plurality of water tubes 3 is surrounded by an outer trunk 6, an internal space 5 formed inside the water tube row 4 by the water tube row 4 is partitioned by a partition board 22 into a lower space 23 and an upper space 24, a plane combustion burner 26 blowing out combustion gas toward the upper space 24 from the water tube row 4 side is used as a burner, and a breeching 34 communicating with the lower space 23 is provided so that a heat exchange is executed between the water tube lower part and an exhaust gas.

7. 发明专利

JP2002535588A 失效
公开(公告)号：JP2002535588A
公开(公告)日：2002-10-22
申请号：JP2000593891
申请日：2000-01-10
IPC分类号： F22B21/12 , F22B21/34 , F22B37/10
摘要： A steam generator has a combustion chamber which is configured for an approximately horizontal main direction of flow of the fuel gas and which is followed on the fuel-gas side, via a horizontal gas flue, by a vertical gas flue. The containment walls of the combustion chamber are formed from evaporator tubes. Temperature differences between adjacent evaporator tubes of the combustion chamber are to be kept particularly low in all the load states of the steam generator. For this purpose, a first group and a second group of evaporator tubes can be acted upon in each case in parallel by a flow medium. The first group of evaporator tubes is connected in series with the second group.

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