Muaj feem ntau ntawm cov dej cawv nyob rau hauv cov dej ntuj, ntawm cov uas muaj cov boiler yog: colloidal teeb meem thiab dissolved teeb meem
1. Cov tshuaj tshem tawm thiab cov tshuaj sib xyaw ua ke yog tsim los ntawm sediment, tsiaj thiab cog qoob loo, uas yog qee yam tseem ceeb uas ua rau cov dej turbid. Thaum twg cov impurities nkag mus rau ion mauv, lawv yuav ua kom muaj zog hloov pauv thiab cuam tshuam cov dej zoo. Yog tias lawv nkag rau hauv lub boiler ncaj qha, qhov zoo tshaj ntawm lub chav yuav yooj yim tsis kam ua rau cov av, thiab ua rau cov av nkos, thaiv cov tshuaj thiab colloidal tshuaj yuav raug tshem tawm los ntawm pretreatment
2. Daolved tshuaj yog feem ntau yog xa mus rau cov ntsev thiab qee cov pa roj yaj hauv dej. Dej ntuj, coj mus rhaub dej uas zoo li ntshiab heev kuj muaj ntau yam ntsev uas yaj, suav nrog cov calcium, magnesium, thiab ntsev. Cov tshuaj tawv yog lub ntsiab ua rau boiler fouling.Brecibe nplai yog qhov kev tiv thaiv kev phom sij, uas tuaj yeem ua tiav los ntawm kev siv tshuaj lom neeg sab nraum Boiler lossis Tshuaj Kho Mob Hauv Lub Boiler
3. Oxygen thiab carbon dioxide tsuas yog cuam tshuam cov roj roj boiler hauv cov roj uas yaj, uas ua rau cov pa oxygen thiab acid corrosion rau lub boiler. Cov pa oxygen thiab hydrogen ions yog tseem muaj cov kab laum ntau dua, uas ua kom nrawm dua hluav taws xob. Nws yog ib qho ntawm cov xwm txheej tseem ceeb ua rau boils corrosion. Daws oxygen tuaj yeem tshem tawm cov neeg daaerator lossis ntxiv cov tshuaj txo qis. Nyob rau hauv rooj plaub ntawm carbon dioxide, tswj ib qho qee yam p thiab Alkalinity ntawm lub lauj kaub dej tuaj yeem tshem tawm cov nyhuv.