Le Marquis de Sade

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#1 02-09-2014 09:58:04

Date d'inscription: 01-08-2014
Messages: 10

Batch pickling

Water continuous cycle process, the pre-calculated amount of caustic agent was added portionwise to the tank the temporary system. When the caustic agent concentration and pH value reaches a predetermined index stop dosing and continued to maintain the water cycle 6 ~ 8h be caustic.
After washing caustic lye Inconel X-750 Tubes  emissions to clean, then rinse.
Acid reaches a predetermined temperature after the heating is stopped, the cleaning water within the system to maintain constant loop. Then adding a corrosion inhibitor to be added and the cleaning system to ensure a sufficient concentration to maintain. Then add concentrated acid, acid speed should be slow. Especially on the main carbonate scale boilers have a lot of carbon dioxide Inconel 693 Tubes  gasification after adding acid to escape, but can not add acid speed too fast. Adding acid to the sample timing of the cleaning system from the outlet of the concentration of the analyte concentration of the acid and iron ions, usually 5 ~ 10min interval sampling and analysis time, when the acid concentration at the outlet stable at 4%, the acid addition is stopped and continues to wash cycle or immersion cleaning for several hours, and sampled once every 20 ~ 30min. Inconel 718 Tubes When the acid concentration should be found to reduce the time to add acid.
Direct and relatively reliable method for determination of acid end tube is observed by monitoring the extent of being cleaned. If you can guarantee ingredient dirt and dirt on the boiler tubes on the monitor consistent and cleaning conditions are basically the same, Inconel 725 Tubes  then the monitor tube may be considered if it is to clean the boiler has also been cleaned.

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