Processing Spent Tin Fluorination Catalysts to Recover Tin and Fluoride Values and to Minimize or Eliminate Hazardous WasteEPA Contract Number: 68D60046
Title: Processing Spent Tin Fluorination Catalysts to Recover Tin and Fluoride Values and to Minimize or Eliminate Hazardous Waste
Investigators: Hyatt, David E.
Small Business: Chemical and Metal Industries Inc.
EPA Contact: Manager, SBIR Program
Project Period: September 1, 1996 through September 1, 1998
Project Amount: $225,000
RFA: Small Business Innovation Research (SBIR) - Phase II (1996) Recipients Lists
Research Category: Hazardous Waste/Remediation , SBIR - Waste , Small Business Innovation Research (SBIR)
Description:Tin catalysts are being used or are proposed for the production of several hydrofluorocarbon (HFC) and hydrochloro-fluorocarbon (HCFC) replacements for chlorofluorocarbons (CFCs) that have been eliminated or are being phased out in the United States and other developed countries due to their ozone depletion potential (ODP). In Phase I,Chemical & Metal Industries, Inc., demonstrated the technical feasibility of a process for recovering tin and fluoride values from the spent catalyst and spent catalyst residues from these fluorination processes. The process also minimizes the amount of hazardous and other waste that would have to be treated and disposed of in the absence of such technology.
In Phase II, the process demonstrated in Phase I, will be scaled up to pilot scale operation. Tin and fluoride products from the pilot plant will be used for confirming acceptability in the marketplace. The testing will also provide guidance for design and construction of the commercial scale process in Phase III. Issues that are also important to address at pilot scale include the materials of construction for this highly corrosive service and the economic viability of the process.