Typically, cement plants do not possess significant low-temperature heating requirements, so most waste heat recovery boiler projects in cement process are actually for power generation. The amount of waste heat accessible for recovery depends upon kiln system design and production, the moisture content of the raw materials, and the quantity of heat essential for drying bare-assed mill system, solid fuel system and cement mill.
Waste heat recovery boiler provides approximately 30 percent of an cement plant’s overall electricity needs and will be offering this advantages:
1.Reduces purchased power consumption (or reduces reliance upon captive power plants), which often reduces operating costs
2.Mitigates the impact of future electric price increases
3.Enhances plant power reliability
4.Improves plant competitive position already in the market
5.Lowers plant specific energy consumption, reducing greenhouse emission emissions (based on credit for reduced central station power generation or reduced fossil-fired captive power generation for the cement plant)
Waste Heat Recovery Power Systems useful for cement kilns operate This thermodynamic cycle would be the basis for conventional thermal power generating stations and is made up of flame (boiler) that converts a liquid working fluid to high-pressure vapor (steam, within a power station) that's then expanded by having a turbo generator producing power. Low-pressure vapor exhausted in the turbo generator is condensed time for a liquidity, with condensate through the condenser returned towards boiler feed water pump to remain the cycle.
Waste heat recovery systems consist of heat exchangers or heat recovery steam generators (HRSGs) that transfer heat from the exhaust gases towards the working fluid inside, turbines, electric generators, condensers, and a working fluid air conditioning. Three primary waste heat recovery power generation systems are available, differentiated through the style of working fluid...