Chemical cleaning (heat-conducting oil boiler cleaning) adopts China's patented technology, combines the particularity of the internal structure of the heat conducting oil heating system and the diversity of materials, and determines the following cleaning scheme of the heat conducting oil furnace:
Heat conduction oil vent - steam washing, degreasing, descaling cleaning, rinsing, examination and acceptance of neutralization passivation - steam washing - - nitrogen purging - reset temperature
(1) steam washing will empty the heat conducting oil in the pipe, and use steam to wash the pipe inside to remove surface impurities, rust and other dirt.
(2) the purpose of degreasing and degreasing is to remove the oily substance in the system, and make the scaling substance infiltrate and transform, so as to create conditions for the descaling step.Oil pollution is originally a spread of the oil film on the surface of the role of washing prior wetting, winding into beads of oil, and finally washed away from the surface.
(3) the coke, the program is a critical step in chemical cleaning, descaling purposes through the special configuration of the coke cleaner, and scaling of chemical reaction, formation water soluble materials are cleaning fluid out of the system, so as to achieve the aim of mold temperature machine coke cleaning descaling.
Heat conduction oil coking on the wall pipe is heated, focal piece piece is very hard, I study the coke from the company for many years practice concluded that heat conduction oil coke, should use the coke comprehensive effect: solubilization effect;Adsorption -- the adsorption of surfactant on dirt and the surface of the washed substance (furnace tube), which changes the interface and various substances (such as mechanical, electrical and chemical properties) on the surface.Emulsifying -- forming strong interfacial membrane, which is conducive to the stability of emulsion, and the greasy particle is not easy to precipitate on the surface of solid (furnace tube), adding detergent to improve the washing effect.It is conducive to suspension of fouling particle, preventing fouling particle deposition, coupled with temperature (thermal motion) and mechanical force, so as to achieve the optimal washing effect.
(4) rinsing and rinsing is to combine the formulated rinsing liquid with the residual free ions in the system to further improve the descaling rate and lay a good foundation for the neutralization and passivation procedures.
(5) the neutralization solution is used to react with the residual bleaching solution in the system, so that the PH value of the entire heat conducting oil heater system meets the specified requirements.
(6) passivation liquid is used to form a complete and dense passivation protective film on the clean metal surface.
(7) water washing after cleaning ensures that all cleaning agents are drained out and the pipe wall is clean inside.(8) nitrogen purge is to discharge as much water as possible from the washing residual in the pipeline of the heat conducting oil heater, which can be carried out by nitrogen or compressed air.