Method for recovering solvents through the use of an extender

摘要: Method for the recovery of solvent from a solvent-based wash liquid containing non-hazardous waste resulting an equipment cleaning operation. The solution typically averaging approximately 90 percent and 10 resin, pigments other dissolved or suspended solids is continuously tumbled in tumbler/evaporator vessel together with highly porous, adsorbent extender granulated form, while maintaining temperatures sufficient to evaporate prevent solid matter sticking after processing. substantially inert, material may be selected diatomaceous earth, powdered calcium silicate, glass (100 mesh), oak sawdust cedar bentonite, charcoal mesh) ground corn cobs. amount introduced into order 5 20 by weight solution. system employ jacketed ribbon, double cone rotating helix blenders. A blender type which tumbles moves input end toward output thereof at sufficiently low steady feed rate utilized provide continuous process as opposed batch process, residence time being dry residue.