Design and Optimization of Chemical Control and Monitoring System for Class 9H Unit

  Method  Taking a class 9H combined cycle power plant as an example, the design and optimization of chemical control and monitoring system were studied according to water and steam quality criterion and guideline of chemical supervision.

  Result  Through the selection of high tightness condenser, reliable condensate polishing and boiler make-up water treatment process, feed water adopts oxidizing total volatilization treatment AVT(O), boiler water adopts phosphate treatment, the sampling system sets up with perfect on-line monitoring instruments, can ensure the safety, reliability and economic operation of the unit.

  Conclusion  This paper aims to provide an optimization scheme for the design of chemical control and monitoring system of class 9H combined cycle unit in the futur.