A Process for Cleaning and Removal of Sulfur Compounds From Hot Low-BTU Fuel Gas Part I:Process Development Unit Design and Construction Part II:Pilot-Plant Experience

摘要

Most current research in high-temperature gas cleaning is concerned with the use of various filters for particle removal and with the use of solid absorbants for sulfur compound removal. Pacific Northwest Laboratory (PNL), in a departure from this approach, has developed a unique process that uses liquid (molten) salt scrubbing both for particle agglomeration and removal and for extraction of sulfur compounds. A Process Development Unit (PDU) has been designed and constructed to demonstrate this process. The work reported herein concerns this design and construction phase of work.nThis PDU features unit operations never previously attempted at such extremes of temperature (700° to 730°C) and with molten salts as a working fluid. The process utilizes a venturi scrubber to circulate the molten salt, thereby eliminating failure-prone mechanical pumps.