Theoretical Analysis on the Synthesis of Ultrafine TiO2 Particles by Combustion Reaction

연소반응을 이용한 TiO2 초미립자 제조 공정에 대한 이론적 연구

  • 채범산 (강원대학교 화학공학과) ;
  • 김교선 (강원대학교 화학공학과)
  • Published : 1997.10.31

Abstract

A numerical model has been proposed for a diffusion flame reactor to manufacture ultrafine $TiO_2$ powders. The model equations such as mass balance equation, the 0th, 1st, and 2nd moment equations of aerosols were considered. The phenomena such as $TiCl_4$ reaction rate, $TiO_2$ nucleation rate and the coagulation of $TiO_2$ powders were included in the aerosol dynamic equation. It is found that the $TiO_2$ particle concentration becomes higher, as the inlet $TiCl_4$ concentration and the total gas flow rate increase, and also as the flame temperature decreases. The $TiO_2$ particle size increases, as the flame temperature and the inlet $TiCl_4$ concentration increase and the total gas flow rate decreases.

Keywords