原水经过沉淀、混凝和过滤处理后，除去了水中的悬浮物、胶体和大部分有机物，但水中可溶性盐类并没有多少变化。要满足高参数锅炉补给水水质要求，必须进行除盐处理，即锅炉补给水处理。锅炉补给水处理常采用反渗透和离子交换法除盐等工艺。After the raw water undergoes sedimentation, coagulation and filtration treatment, it removes suspended solids, colloids and most of the organic substances from the water, but the soluble salts in the water do not change much. To meet the water quality requirements for high-parameter boiler feed water, desalination treatment is necessary, that is, boiler feed water treatment. Boiler feed water treatment often adopts processes such as reverse osmosis and ion exchange for desalination.

图3.3-1 某电厂锅炉补给水处理工艺流程—离子交换除盐为例

Figure 3.3-1 Process Flow of Boiler Makeup Water Treatment at a Power Plant - Ion Exchange Desalination as an Example

1、补给水系统的工艺流程Process Flow of Boiler Makeup Water Treatment

Raw water from comprehensive pump room→Raw water heater→Raw water tank→Raw water pump→Dual-media filter→Activated carbon filter→Security filter→High-pressure pump→Reverse osmosis unit→Freshwater tank→Freshwater pump→Cation bed→Carbon remover→Intermediate water tank→Intermediate water pump→Anion bed→Mixed bed→Deionized water tank→Deionized water pump→Thermal system of main building.

2、其他辅助系统

2.1 酸系统的工艺流程：

2.2 碱系统的工艺流程：

2.3 废液流程：

3、锅炉补给水系统水质控制指标