Process for recovery and recycle of methanesulfonic acid and phosphorous acid

Disclosed is a process for recovering and recycling waste methanesulfonic acid (MSA) and phosphorous acid (H3PO3) in a bisphosphonation process for reuse in the process. The recovery process involves treating a waste crude mother liquor stream with HCl to remove sodium ion, as sodium chloride, recov...

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Bibliographische Detailangaben
Hauptverfasser:	VAUGHN, WILLIAM A, DAUER, RICHARD R, VENKATARAMANI, EDAMANAL S, FORMAN, ANDREW L, MAGLIETTE, JR., RALPH J
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY METALLURGY ORGANIC CHEMISTRY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	Disclosed is a process for recovering and recycling waste methanesulfonic acid (MSA) and phosphorous acid (H3PO3) in a bisphosphonation process for reuse in the process. The recovery process involves treating a waste crude mother liquor stream with HCl to remove sodium ion, as sodium chloride, recovering HCl-H2O by atmospheric distillation, separating and dehydrating a mixture of methanesulfonic acid and phosphorous acid by vacuum distillation for recycle. The substantially dry methanesulfonic acid and phosphorous acid, and previous HCl, can all be recycled back to the process for reuse.