GB279526A - Process for the utilisation of liquids for effecting transfer of energy or matter or like purposes - Google Patents

Abstract

279,526. Synthetic Ammonia & Nitrates, Ltd., Slade, R. E., Burstall, A. F., and Carey, W. F. April 30, 1926. Gases, treating with liquids.-Turbulent thick films of liquid, produced by allowing the liquid to flow by gravity down pipes or surfaces at a rate not less than 300 c.c.m. per minute per centimetre of periphery of the surface, are employed for absorbing gases in liquids and other purposes. The liquid supplied to an annular chamber 2, Fig. 1, rises over an annular weir around a pipe 1, and the film becomes turbulent when it reaches a level just below the weir. Gas to be cooled flows upwards through the pipe, and partial evaporation of the liquid into the surrounding air facilitates the cooling effect. The weir 5, Fig. 7, may be sloped so that the liquid acquires a velocity normal to the pipe surface. and the chamber, 2 may be closed at the top and supported on a tapered sleeve. 7 on the pipe 1. The liquid may be supplied to the chamber under pressure, in which case the film becomes turbulent in the annulus 6, and baffles may be fitted in the weir chamber. Apparatus for absorbing ammonia gas in water may comprise concentric cylindrical chambers Fig. 3, supplied with internal turbulent films 12, 13, of absorption water or ammonia liquor and external films 14, 15 of cooling-water. The gases flow upwards through the annulus and may be submitted to a scrubbing action in an upward extension of the column. According to the second Provisional Specification the liquid may be distributed down the inside of a pipe by a baffle projecting from the top of the annular liquid chamber into the open end of the pipe.