Abstract

Abstract Currently India is producing 350 million tons of cement and so there is a more potential to generate the power through waste heat recovery. A case study has been conducted at a cement factory, Telangana, India with cogeneration plant having flashing technology. The high pressure water is flashed into wet steam at two pressure levels (high pressure flashing and low pressure flashing) to increase the power generation. The hot water from the flashing chamber is used for the regeneration of the cycle and the steam is supplied to the turbine at the relevant location. In the current work, the optimum values for the high pressure flashing and the lower pressure flashing are searched and developed for the maximum heat recovery and also higher output from cogeneration plant. The identified key operational parameters are steam generating pressure, limit to high pressure flashing, limit to low pressure flashing and flash mass ratio.

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