CAJ | 학술논문

为了降低某电厂600 MW亚临界汽包炉饱和蒸汽钠含量，以预防汽轮机积盐，将该锅炉炉水处理方式由常规磷酸盐处理方式（PT）转换为平衡磷酸盐处理方式（EPT）。试验结果表明：该锅炉炉水EPT工况磷酸盐平衡点为0.45～0.55 mg/L，控制炉水电导率小于10μS/cm、用NaOH调整炉水pH 9.30～9.50、炉水钠小于1000μg/L、饱和蒸汽携带系数（以钠计）小于0.1%，可保证该机组额定工况运行时饱和蒸汽钠小于3.0×10-6 g/kg，达到水汽质量标准要求的期望控制值。
위료강저모전엄600 MW아림계기포로포화증기납함량，이예방기륜궤적염，장해과로로수처리방식유상규린산염처리방식（PT）전환위평형린산염처리방식（EPT）。시험결과표명：해과로로수EPT공황린산염평형점위0.45～0.55 mg/L，공제로수전도솔소우10μS/cm、용NaOH조정로수pH 9.30～9.50、로수납소우1000μg/L、포화증기휴대계수（이납계）소우0.1%，가보증해궤조액정공황운행시포화증기납소우3.0×10-6 g/kg，체도수기질량표준요구적기망공제치。
In order to reduce the content of sodium ions in the saturated steam of a 600 MW sub-critical boiler unit for preventing salt deposition on steam turbine,the routine phosphate treatment method PT has been converted into equilibrium phosphate treatment method(EPT). The experimental results show that the Phosphate Equilibrium Point of the boiler water EPT working condition is 0.45-0.55 mg/L ,and the boiler water conductivity is controlled at less than 10μS/cm. NaOH is used for adjusting the boiler water pH to 9.30-9.50 ,and the sodium in boiler water is less than 1 000μg/L and the carryover coefficient of saturated steam (by sodium) is less than 0.1%,so as to guarantee the saturated sodium in steam to be less than 3.0×10-6 g/kg,while the rated working condition of the unit is running, reaching the expected controlled value required in the steam quality standard.