| 摘要 |
The invention relates to a method for using the waste heat from a plant for producing cement, wherein heat of a process gas is used through a heat exchanger (21) to heat water vapour, and wherein the plant for producing cement has at least one calcinator (2, 4) and at least one heat exchanger (1), which consists of a sequence of cyclones (1a, 1b), for heating raw mix. The invention also relates to a plant for producing cement, wherein the plant for producing cement has at least one calcinator (2, 4) and at least one heat exchanger (1), which consists of a sequence of cyclones (1a, 1b), for heating raw mix. According to the invention, the process gas is taken at the outlet (10) of the calcinator (4) and/or at the gas-side outlet (11) of the first cyclone (1b) in the heat exchanger (1) in the direction of gas flow and, once the heat has been depleted in a steam vessel (21), the cooled process gas is fed back into the second cyclone (1a) or third cyclone in the heat exchanger (1) in the direction of gas flow. This has the advantage that the heat taken from the process can be used for the further heating of unrecovered heat which can thereby be more efficiently converted into electrical energy. |
