© MANTRA Innovative Systems 2013
Tomorrow's Energy Solutions.
PHARMACEUTICAL MANUFACTURING FACILITY REPLACES PLATE-AND-FRAME HEAT EXCHANGER
Having suffered maintenance and corrosion problems with an existing plate exchanger, this pharmaceutical manufacturer began to explore options for a more suitable replacement. The gas stream to be heated and cooled contains particulate and corrosive elements and the production for the entire facility is completely dependent on the heat transfer process.
- High corrosion resistance attainable by use of stainless steel 316 and the inherent heat pipe advantage of isothermal operation.
- Low fouling susceptibility due to design aspects of the large finned, vertically oriented pipes in staggered concentric circular row configuration.
- Ease of maintenance attributable to fully removable panels exposing the heat pipes in both gas chambers ensuring ease of cleaning and inspection.
- High reliability through multiple redundancy design as each pipe operates independently so that a single pipe failure will not incapacitate the unit.
The unit was required to be retro-fitted into an existing location with minimal disruption to the existing gas connections. The gas used contains SO2 which if allowed to condense, will produce sulphuric acid erosion in the unit. Avoiding cold spots and potential condensation was also required in order to avoid this hazard.
Gas 1 exhaust temp in: 662° F
Gas 2 exhaust temp put: 284° F
Gas 1 ambient air temp in: 100° F
Gas 2 process air temp out: 478° F
Gas 1 mass flow: 29,127 ACFM
Gas 2 mass flow: 28,572 ACFM
Energy recovered: 820 kW
Exchanger efficiency: 67.3%(limited by gas due point)
To address this criteria, MANTRA proposed a finned, through flow gas-to-gas heat exchanger constructed from 316 stainless steel. The inherently high flexibility offered by heat pipe units allows for a customized unit to be designed and built for any particular application.