1, the use of aqueous solution (sodium silicate solution) or alkaline solution washing, propane cylinder should be cleaned immediately after drying.
2, the use of solvents to remove the pollutants inside the cylinder, almost all of the hydrocarbon pollutants, can be washed with liquid water or organic solvent.
3, the use of alkaline solution filled with steam gun, insert the bottom of the propane cylinder, into the alkaline solution 15 ~ 30min, the solution from the cylinder overflow will be contaminated away. Oil or hydrocarbons contaminated with oil, more than 90% of the pollutants can be treated with organic solvents clean, but can not be washed with carbon tetrachloride, because it is highly toxic solvent. After cleaning, must be dried, plug the bottle.