F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
62/23, 9/37
F25B 1/00 (2006.01) B01D 1/28 (2006.01) B01D 3/00 (2006.01) D21C 11/06 (2006.01) D21F 5/20 (2006.01) F22B 1/16 (2006.01) F22B 3/04 (2006.01) F25B 1/10 (2006.01) F25B 29/00 (2006.01)
Patent
CA 1160853
ABSTRACT OF THE DISCLOSURE A novel method and apparatus is provided herein for the re- covery of waste heat from thermo-mechanical pulping systems and the like. The method comprises the steps of: separating a common a common supply of working fluid into first and second branches; evaporating the working fluid in the first and second branches by means of first and second in- dependent waste heat sources to increase the energy of the evaporated working fluids in each of the branches; compressing the evaporated work- ing fluid in the first branch; desuperheating the compressed working fluid; merging the working fluid evaporated in the second branch with the desuperheated working fluid; compressing the merged working fluids; and condensing the last-mentioned compressed working fluid by transferring the energy to a second working fluid whose energy is significantly in- creased. The apparatus comprises: first and second evaporator means for evaporating a working fluid responsive to first and second independent waste energy sources; conduit means for receiving the working fluid; means for simultaneously delivering working fluid from the conduit means to the first and second evaporator means; first compressor means for com- pressing working fluid delivered from the first evaporator means; second compressor means; desuperheating means for desuperheating working fluid compressed by the first compressor means; and condenser means for receiv- ing the compressed working fluid from the second compressor means and for receiving a second working fluid for transferring energy from the first- mentioned working fluid to the second working fluid. The waste heat re- covery system produces extremely useful high pressure, high temperature steam, free of the impurities present in the steam vented by the thermal mechanical pulping system.
394476
Dyer David
Wise James L.
Borden Ladner Gervais Llp
Techmark Corporation
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