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Uploaded on:
13/02/2009 05:50:45
Type:
Digital Asset
File Size:
235.04 KB
Dimensions:
1000 x 677 pixels
2674 views 4 downloads
P number: P000193
Old photograph number: OSLPlate10
Caption: Scottish oil-shale processing 8. Sweating houses or stoves for crude solid hard paraffin wax refining. (Henderson type.)
Description: Scottish oil-shale processing 8. Sweating houses or stoves for crude solid hard paraffin wax refining. (Henderson type.) The photograph shows brick-built sweating houses or stoves, usually 52 ft. by 16 ft. by 12 ft. in height and on two stories. A series of residual oils are sweated out in a series of processes by heating the paraffin to increasing temperatures and subsequent cooling. This is a fairly long process due mainly to the slow cooling times, especially in hot weather. Consequently 24 sweating houses were required to cope with the throughput. Each grade of wax coming out of the process was steamed and futher filtered into final products.
Date taken: 01/01/1927
Photographer: Unknown
Copyright statement: NERC
Acknowledgment: This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network
Orientation: Landscape
Size: 235.04 KB; 1000 x 677 pixels; 85 x 57 mm (print at 300 DPI); 265 x 179 mm (screen at 96 DPI);
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