|
Abstract
|
The unit 1 turbine of SAHAND power plant - 325 megawatt- is used to be hampering by silicate and oxide deposits. There are many methods for cleaning of turbine blades without shell opening. Some technics include: cleaning with superheated steam, CO2, 10 percent base liqueur, dilute HCl and so on[1]. The num. 1 SAHAND power plant turbine was expected for cleaning just after the increasing in impulse pressure. Deposit analyzes showed that there is 56 percent is sodium silicates and 23 percent is iron oxides and 15 percent aluminum oxide, then some liquor were produced to dissolve this material completely. All of liquors were done for dissolving of turbine deposit and the best one chose. This three ingredient liquor can be degenerate by biomaterials. After the cleaning and in 2 operation years, 11.6% increase in electricity production yield observed, also decrease of impulse pressure and 240 billion Rial excess in earning gained.
|