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Waste Heat Recovery Systems for Cement Industry
Waste Heat Recovery System (WHRS) in cement plant is proven practice for power generation and it is constructed by utilizing the waste heat from the gas of clinker cooler vent and pre-heater outlet to generate electricity power. The operation of Waste Heat Recovery Power Plant shall not affect the normal cement production.
We provide waste heat recovery system which is tailored design considering following parameters:
We use reliable new technology to increase power output and to make the Waste Heat Recovery Power Plant with maximum efficiency
WHR power plant is based on the waste heat from the clinker kiln. When there is fluctuation of the clinker kiln, the power generation of WHR power plant is varied. When there is waste gas temperature fluctuation, the steam produced by the waste heat recovery boilers will be fluctuated accordingly. The selection of equipment for waste heat recovery power plant should suit all the fluctuation of gas parameters and the thermodynamics.
We carefully study the existing installed cement production process and understand thermodynamics system in order to fulfill the operation requirements, save energy and to achieve best efficiency of waste heat recovery system
AQC boilers are installed next to the cooler side of the cement lines, for producing main steam and LP steam and hot water, and a precipitation chamber is set up at the bottom of boiler to alleviate the boiler abrasion. SP boilers are installed besides the preheater tower, for producing main steam and LP steam.
Water after being de-aerated is pumped to AQC boiler’s hot water stage.
The outgoing hot water from AQC boiler’s hot water stage is divided into four parts:
The superheated steam produced by SP boilers and AQC boilers merge together and introduced to the turbine to drive the turbine for power generation. LP steam from SP boilers and AQC boilers merge together and be introduced to the turbine as supplement steam. Exhaust steam of turbine after work is condensed to water, and then pumped to a deaerator, thus a complete thermodynamic circulation system form.
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