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    • 48. 发明申请
    • BOILER AND METHOD OF OPERATING A BOILER
    • WO2021180456A1
    • 2021-09-16
    • PCT/EP2021/054378
    • 2021-02-23
    • ALFA LAVAL CORPORATE AB
    • MOSEKAER NIELSEN, BodilSKYTTE JORGENSEN, Lars
    • F01N3/02F01N5/02F01N13/00F01K3/20
    • A boiler and a method of operating a boiler are provided. The boiler (2, 56, 58, 62, 70, 112) comprises an exhaust gas inlet (26, 94, 130) for receiving exhaust gas (EG1), a first exhaust gas outlet (28, 96, 132) for discharging exhaust gas (EG1) and means (16, 18, 76, 114) for conveying exhaust gas (EG1) from said exhaust gas inlet (26, 94, 130) to said first exhaust gas outlet (28, 96, 132). The boiler further comprises a medium inlet (38, 90, 126) for receiving a medium, a medium outlet (40, 92, 128) for discharging the medium, and means (12, 82, 122) for conveying the medium from said medium inlet (38, 90, 126) to said medium outlet (40, 92, 128). The boiler is characterized in further comprising a bypass pipe (20, 88, 124) for conveying exhaust gas (EG1) from said exhaust gas inlet (26, 94, 130) to said first exhaust gas outlet (28, 96, 132), which bypass pipe (20, 88, 124) is enclosed by a circumferential wall (42, 98, 116) of the boiler (2, 56, 58, 62, 70, 112). A bypass regulator (44, 100, 134) is arranged to block or unblock the bypass pipe (20, 88, 124) to regulate an exhaust gas flow through the bypass pipe (20, 88, 124). A first pressure sensor (52, 108, 142) is arranged to measure a first exhaust gas pressure upstream the bypass pipe (20, 88, 124). A control unit (50, 106, 140) communicating with the first pressure sensor (52, 108, 142) and the bypass regulator (44, 100, 134) is arranged to control the bypass regulator (44, 100, 134) in dependence on said first pressure.