C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/384
C01B 25/20 (2006.01) B01J 19/00 (2006.01) B01J 19/02 (2006.01) F23C 3/00 (2006.01)
Patent
CA 1132777
° APPARATUS FOR THE PRODUCTION OF PHOSPHORIC ACID ABSTRACT OF THE DISCLOSURE: The invention relates to an apparatus for the production of phosphoric acid by subjecting yellow phosphorus to com- bustion inside a combustion tower, the apparatus comprising a cone-shaped shell with a flat bottom of acidproof material forming the combustion tower, the cone ratio of the shell being 1 : 10 to 1 : 12. An upwardly-directed off-gas out- let is secured to the lower portion of the shell and a plurality of downwardly directed spray nozzles is arranged so as to open through the middle portion of the shell into the interior of the combustion tower. An acid-receiving cup with an overflow weir is positioned near the upper end of the shell, the acid-receiving cup surrounding the combustion tower concentrically, being gas-tightly connected to, and supporting, a self-supporting cone-shaped tower cover having a passageway passed centrally through it. The overflow weir is formed of a tubular-annular structure disposed comple- tely horizontally inside the acid-receiving cup. The tower cover forms, with respect to the horizontal an angle a of at least 19° . A water-cooled air inlet and a tubular holding means terminating in a phosphorus spray nozzle are hooked concentrically with respect to one another in, and are passed through, the passageway in the cover.
337436
Thummler Ursus
Werner Hugo
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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