Brayton-cycle solvent recovery system. Phase II. System design

Technical Report · Tue Nov 23 04:00:00 EST 1982

OSTI ID:5157149

The Brayton-cycle system described in this report was designed to recover the solvents evaporated in a 3M Company magnetic tape production facility. The major solvents utilized are MEK and toluene. The system was designed to receive the warm solvent/air mixture from the drying oven, remove the solvents by condensation, and return the warm air to the oven in a recirculating system. At the heart of the Brayton-cycle system approach is a newly designed electric-motor-driven turbocompressor. The turbine/compressor shaft is designed to operate at 16,500 rpm through single-stage helical step-up gears driven by a 3550-rpm 500-hp rated motor. The compressor is designed for a pressure ratio of 2.4 and the turbine for 2.25. The turbine/compressor and step-up gears are integrally designed for mounting to a framework with the motor. The assembly contains a lubrication system with redundant oil pumps and a water-cooled lube oil cooler. Instrumentation consists of shaft proximity probes, oil and bearing temperature sensors, accelerometers, and oil pressure transducers for controlling and monitoring system operation. Economic analysis shows that a simple payback for a similar magnetic tape installation is 1.9 yr - somewhat on the high side due to a high percentage of operation at reduced solvent evaporation rates. Paybacks of less than 1 yr are possible when operating at higher solvent concentrations and at approximately 2/3 of the available time (6000 h/yr).

• Research Organization: AiResearch Mfg. Co., Torrance, CA (USA)
• DOE Contract Number: AC07-78CS40005
• OSTI ID: 5157149
• Report Number(s): DOE/CS/40005-T5; ON: DE84007475
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
BRAYTON CYCLE
COMPRESSORS
DESIGN
ECONOMIC ANALYSIS
ECONOMICS
MACHINERY
MAGNETIC STORAGE DEVICES
MAGNETIC TAPES
MANAGEMENT
MANUFACTURING
MATERIALS RECOVERY
MEMORY DEVICES
PAYBACK PERIOD
PROCESSING
RECOVERY
SOLVENTS
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY
WASTE MANAGEMENT
WASTE PROCESSING