487983-A is referenced by 2 patents.

487,983. Distilling and gasefying solid carbonaceous materials. ROWLEY, H. E. G. (Soc. Chimique de la Grande Paroisse- Azote & Produits Chimiques) July 12, J937, No. 19301. [Class 55 (i)] In the production of oils by low temperature distillation of coal, lignite, oil shale, petroliferous sandstone, &c. in a distillation chamber through which the material passes vertically downwards, by means of hot gases or superheated steam flowing: horizontally therethrough in a closed circuit, followed by combustion of the distilled material by means of oxygen-containing gas, the hot residue is utilized to preheat the hot gases or steam used in the distillation chamber. Superimposed chambers of a retort comprise a preheating or drying chamber A, a distilling chamber B, a combustion chamber C and a residue cooling chamber D and are utilized in combination with a condenser L and a heat exchanger E.; The distilling medium is superheated by passage through the hot residue in D and then through the heat exchanger E before entering the distilling chamber B from which the gases and volatile products pass into the condenser L. Oils are recovered in the latter and the non-condensible gas or lowpressure steam, which may be compressed by a compressor M, is returned to the cycle. Hot water separated in the condenser may be utilized for the production of steam required in the process. Oxygen-containing gas is supplied to the combustion chamber C through a supply pipe 7, part of the issuing gases being used in the heat exchanger and part, after utilization in an external apparatus, such as a boiler K, being used in the preheating chamber A. The flow of gases through the chambers A and D may be horizontal or vertical.

Method and apparatus for destructive distillation at low temperature
Application Number
GB19370019301 19370712
Publication Number
487983 (A)
Application Date
July 12, 1937
Publication Date
June 29, 1938
Grande Paroisse Azote & Prod C
C10G 01/00
C10B 49/00
C10B 01/00
C10G 01/02
C10B 49/06
C10B 49/00
C10B 01/04
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