Research on Compounding of Thermochemical Cleaning Agents for Oily Sludge
Thermochemical cleaning method was used to treat oily sludge,and single agent screening and compound optimization on different types of chemical cleaning agents were carried out.The oil removal effect of different thermochemical cleaning agent formulations on oily sludge was investigated,and the main process conditions of thermochemical cleaning were studied and optimized.The results showed that Na2SiO3 had the best oil removal effect among single cleaning agents,and the residual oil rate of the cleaned oil sludge was 16%;The combination of anionic alkaline inorganic salt alkaline cleaning agents had the best cleaning effect among the complex cleaning agents,namely sodium dodecylbenzenesulfonate(LAS)+Na2SiO3+KOH,the residual oil rate of the cleaned sludge was only 4.55%,indicating that the combination of different types of cleaning agents could significantly improve the thermal and chemical cleaning effect;Meanwhile,the influence of various operating conditions on the oil removal efficiency of thermochemical cleaning of oily sludge was investigated.The optimal cleaning conditions were as follows:75℃ hot washing temperature,5∶1 liquid-solid ratio,90 min hot washing time,and 400 r·min-1 stirring rate.
NETL
NSTL
万方数据
