WO 2017/167639 A1

System for producing cement clinker with a separated entrained-flow calcinator

(22) 23.03.2017

(43) 05.10.2017

(57) The invention relates to a system (100, 200) for producing cement clinker, having at least one rotary kiln (113) for sintering the cement clinker from pre-calcinated raw meal (101), at least one heat exchanger (112) which is connected downstream of the rotary kiln (113) in the gas flow direction for recuperating process heat from the at least one rotary kiln (113), at least one entrained flow calcinator (102) for pre-calcinating (deacidifying) the raw meal (101), and at least one clinker cooler (105) which is connected downstream of the rotary kiln (113) in the material flow direction for cooling the sintered cement clinker, wherein a line is provided for conducting the cooler exhaust air (104) for recuperating heat into the system (100, 200). According to the invention, the entrained-flow calcinator (102) is arranged upstream of the heat exchanger (112) in the material flow direction. The aforementioned assembly allows the system to be operated with high excess heat which can be coupled out in order to generate electric energy.

(71) KHD Humboldt Wedag GmbH, Colonia-Allee 3, 51067 Köln (DE)

(84) ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

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