coking still

coking still

[′kok·iŋ ‚stil]
(chemical engineering)
A still in which coking is done; usually, it is a batch still.
References in periodicals archive ?
Paraffin wax was produced during distillation along with various grades of fuel: naphtha (or petroleum spirit) 6%, burning oil (kerosene) 23%, wax and lubricating oil 56%, the remaining heavy residue, sent to the coking stills, 15%.
Historical review paper the shale-oil industry in Scotland 1858-1962. II: oil-shale quality, resources and technological advances
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