Full premixed low nitrogen Steam generator The pressurized light water boiler nuclear power plant transfers the heat generated in the nuclear fuel to the steam generator, heats the supply water supplied from the secondary side and converts it into steam, and uses the steam to mechanically work in the turbine to produce electricity.

At the secondary side of the steam generator, there is a large flow of supply water containing corrosion products of system structures, which causes phase change and changes into steam. At this time, because the flow rate decreases, the iron corrosion products contained in the supply water precipitate at the lower part of the secondary side of the steam generator.

Among the iron corrosion products, hematite and magnetite account for 95.8%, and the rest are composed of other metal oxides. Under the action of this iron corrosion product, the corrosion of steam generator heat transfer tubes is promoted.

Full premixed low nitrogen steam generator As the iron corrosion product of this sediment, in order to remove the corrosion product deposited at the lower part of the steam generator, the removal operation is carried out during each planned preventive maintenance period by operating the steam generator blowdown system. However, because the iron oxide has the property of being consolidated at the bottom of the steam generator, it is difficult to remove it with the blowdown system.

High pressure water jet cleaning technology uses water as the medium. Through a special equipment system, water produces multiple high-pressure water jets with different intensities and angles. What? The rust, oxide scale, resin, chemical residue, paint or epoxy resin and other scale deposits can be removed with high-pressure water jet cleaning equipment, and the metal color is obvious.

The cleaning of steam generator is divided into two parts. One part is the scaling and derusting cleaning of convection tubes, superheater tubes, air heaters and water-cooled wall tubes of steam generator, that is, the water of steam generator is treated to high quality, and high-pressure water jet can also be used. Cleaning technology can achieve good results in cleaning the furnace of steam generator.