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Content archived on 2022-12-27

USE OF STEAM COMPRESSION HEAT PUMP TO RECOVER HEAT FROM A MEAT RENDERING CONTACT DRYER

Objective

To demonstrate, by the use of Mechanical Vapour Recompression (MVR), a reduction in the energy consumption of a continuous steam heated contact dryer used for the processing of animal by-products. Estimated energy reduction is 70%, equivalent to 1,930 TOE/y. Project payback is estimated at 3 years.
The innovative aspect of the project is in the steam compression factor: this is achieved at a ratio of over 8:1.

The dryer is designed to operate at 5,4 T. steam/h. delivered at 6.18 Bar.
Contaminated steam evaporated from the product, being unsuitable for direct compression, is condensed in a shell and tube reboiler, producing clean steam.
This is then mixed with clean flash steam from the dryer delivered via the steam condensate return, and compressed at an 8:1 ratio by an electrically driven twin stage, twin screw compressor.
The compressor's motive power requirement is 760 KW: it is capable of coping with steam sufficient to evaporate 3.5 t of moisture/h. The remainder of heating steam will be provided by the natural gas boiler.

Call for proposal

Data not available

Coordinator

East Midlands Electricity Generation Ltd
EU contribution
No data
Address
398 Coppice Road
NG5 7HX Nottingham
United Kingdom

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Total cost
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