Application of emululagent in alkali washing of petroleum resin
The alkaline washing system of petroleum resin production often settles a large amount of alkali mud,and the emulsification problem is serious.If the problem of alkali mud and demulsification is not solved,the moisture in the resin will corrode the subsequent pipeline fittings,and the emulsification will affect the pressure difference of the alkali washing tank,and it needs to be stopped for maintenance in serious cases.The demulsification and deoiling abilities of various demulsifiers in alkaline washing were investigated.The results showed that there was no W/O emulsion in the oil phase and no O/W emulsion in the water phase after alkaline washing.Before demulsifier is added,the COD of the wastewater is>3000mg/L,the stratification rate of oil and water is>4h,and there is a white emulsion layer at the interface.After adding demulsifier,the COD of SGR1710 wastewater is about 400mg/L,the stratification rate of oil and water is less than 15min,and there is no emulsion layer at the oil-water interface.
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