| 摘要 |
<p>1298418 Titanium tetrachloride SOC ITALIANA RESINE SpA 11 May 1971 [12 May 1970] 14335/71 Heading C1A Titanium tetrachloride is produced by contacting in zone 3 of the vertical, elongated reactor 1 at 900-1200‹ C. for a time of from 1 to 10 seconds a gaseous chlorine stream containing suspended titanium ore particles (ilmenite, rutile or titanium slag) and introduced via line 6, with a hot combustion gas stream produced in zone 2 by burning coal in a free oxygen containing gas introduced at burner 5, reducing conditions being maintained in the chlorination zone 3 and 4 by means of powdered coal or partial combustion products thereof (e.g. CO) which are introduced to the reactor either with the combustion gas stream or with the gaseous chlorine stream, and then recovering the titanium tetrachloride from the chlorination products obtained at the foot of the reactor 4 from tubes 8. The chlorination products may be cooled to about 150‹ C. by means of liquid titanium tetrachloride and the TiCl 4 product removed from the residual gaseous stream by scrubbing countercurrent to liquid titanium tetrachloride. The angle of incidence between the combustion gas stream and the stream comprising gaseous chlorine is preferably 45 to 180 degrees and the size of the titanium ore particles is preferably not greater than 62 microns. The stream containing gaseous chlorine may be fed to the reactor at a rate equal to or greater than 18 m./sec., the two incident streams having approximately the same momentum. The chlorine is preferably introduced into the reactor in an amount ranging from the stoichiometric quantity required for the chlorination of the oxides present in the titanium ore to 10% higher than this quantity and the coal which may be used as the reducing agent is preferably introduced in an amount ranging from the stoichiometric quantity required for reduction of the metallic oxides present to 20% higher than this quantity.</p> |
