WASSERROHRKESSEL,申请号AT19910000440-传众专利搜索

WASSERROHRKESSEL

申请公布号：ATA44091(A)

申请号：AT19910000440

申请日期：1991.03.01

申请公布日期：1995.01.15

申请人：

JOSEF BERTSCH GESELLSCHAFT M.B.H. & CO.

发明人：BERTSCH OTMAR DIPL.ING.

分类号：F22B37/00;F23J15/02;F23J15/06;F28D7/00;(IPC1-7):F22B33/18

主分类号：F22B37/00

摘要：The water-tube boiler possesses a flue-gas duct 2 connected to the furnace space and a DeNOx system, arranged therein, in the form of a catalyst 10 and also an NH3-injection device 9 for reducing the NOx fractions in the flue gas. A portion of the flue-gas duct 2, which is located upstream of the catalyst 10, as seen in the direction of flow of the flue gas, is subdivided into two flue-gas chambers 14, 15 parallel to one another in terms of flow. A heat exchanger 4, 5 is provided in each of the two flue-gas chambers 14, 15 used for operating the boiler. The passage cross section of each flue-gas chamber 14, 15 is variable. The throttle flaps 6, 7 assigned to the flue-gas chambers 14, 15 for this purpose are controlled by the temperature of the heat-transfer medium. The heat exchangers 4, 5 provided in the two flue- gas chambers 14, 15 have surfaces of different size and/or the cross sections of the two flue-gas chambers 14, 15 are of different size. <IMAGE>