Patent ID: 6969500
Filing Date: 2005-11-29
Classification: C01G

Abstract:
1. A method for separating TiCl 4 and hydrolyzed reaction products of TiCl 4 comprising: a) introducing exhaust gases containing TiCl b) injecting a first large plurality of droplets of a first aqueous hydrochloric-acid solution of titanium oxychloride at the top of the spray column, the first large plurality of droplets having a diameter sufficiently large that they fall through the upward flowing exhaust gas to the bottom of the spray column; c) injecting a second large plurality of droplets of the first aqueous hydrochloric-acid solution of titanium oxychloride into the spray column, the second large plurality of droplets having a diameter sufficiently small that they are entrained in the upward flowing exhaust flow and sufficiently large that an at least some of the upwardly moving droplets of the second plurality of droplets will collide with a falling droplets of the first large plurality of droplets so that the droplets coalesce and fall to the bottom of the spray column; and d) removing the exhaust gases from the first separation stage.