GB162022A - Means for breaking down gas shells - Google Patents

Abstract

162,022. Pickett, F. N., and Tatham, G. H. Dec. 11, 1919. Noxious gases from manufacturing operations, collecting and conveying away.-Relates to an paratus for evacuating noxious fluids from " gas shells " as described in Specification 158,333, and consists mainly in means for neutralizing the residual contents of the shell. The shell is conveyed in the course of its treatment by a number of conveyers which may comprise endless belts c, c<1> - -, Figs. 1 and 2, separately controlled. The lead filling covering the plug of the shell is first removed. The shell is then passed into a chamber a, where the plug is removed by a punch a', the contents of the shell removed by a suction pipe a<3> and a neutralizing liquid such as lime water containing chlorine filled into the shell by a pipe a<5>, while the fumes are extracted from the chamber by a suction pipe a<4>. The shell is then passed into another chamber (not shown), conveniently situated at c<2>, where a breakable tube containing hydrochloric or acetic acid is put into the shell and broken by a soft iron plug which closes the shell. After 30 to 45 minutes, the soft iron plug is removed and the shell passed into a chamber b and turned to discharge the neutralizing liquid down a pipe b<1> to a chamber b<2>. The shell then passes to a weighing machine g which stops the conveyer if the shell has not been completely emptied of its contents. Thence the shell passes to a chamber d where it is broken into fragments, and the fragments are passed to a chamber e heated to about 700‹ C., and then dropped into a cold water tank f, from which they are removed by an electromagnetic lifting apparatus f<1> and carried to any suitable storage place. The chamber e is provided with double doors e<2>, e<2>, at its inlet and outlet respectively, and the chamber a may be similarly fitted. The liquid extracted from the shell by the pipe a<3> is deposited into a tank h, Fig. 3; fumes escaping therefrom are condensed in two successive tanks h<5>, h<7>. Fumes from the tank h<7> and from the various chambers and double doors, in which the above operations are performed, are led by pipes h<8>, a<4>, e<4>, b<4>, k to a coke furnace, Fig. 4, where they are drawn by a steam jet k<3> into the burning coke above a grate k<1> surrounded by the boiler k<2>. The bye-products from the furnace are collected and treated in any suitable way.