GB188666A - Drying gases - Google Patents

Abstract

A process of drying gases consists in treating them with active carbon, preferably of vegetable origin and dehydrated by ignition or by heating in vacuo before use, and in drying the gases by adsorption. One method of carrying out the invention consists in passing the gases through containers filled with granules of active carbon and arranged in series so that as one container becomes exhausted it can be cut out of the series and the saturated carbon reactivated by heated inert gas, the inert gas being passed directly into the container, or into a perforated tube in the container with means for closing the perforations. The containers may be cooled to remove the heat of adsorption, the last containers of the series being cooled more than the first, and the cooled gas used for cooling the moist gas on the counter-current principle. The drying is facilitated if the gas is compressed or its temperature reduced. The Specification as open to inspection under Sect. 91 (3) (a) states that the process can be used to separate mixtures of gases, for example, light and heavy hydrocarbons, or to remove impurities, such as hydrocarbons, carbon dioxide, &c. from hydrogen. This subject-matter does not appear in the Specification as accepted.