pipe still

pipe still

[′pīp ‚stil]
(chemical engineering)
A petroleum-refinery still in which heat is applied to the oil while it is being pumped through a coil or pipe arranged in a firebox, the oil then running to a fractionator with continuous removal of overhead vapor and liquid bottoms.
References in classic literature ?
roared Silver, bending far forward from his position on the keg, with his pipe still glowing in his right hand.
These were used across the world until 1936 when engineers from Scottish Oils designed a new system based on pipe stills.