튜브형 가열로 반응기에 의한 TiO₂초미세 분말 제조공정의 수치모사 결과를 제시하였다. 반응기 내의 모델식으로는 연속식, 에너지식, 물질수지식, 에어로졸의 0차, 1차, 2차모멘트식을 고려하였고, 에어로졸의 동력학식에서는 TiCl₄의 반응속도, TiO₂ 핵화속도, TiO₂ 입자의 충돌, 확산과 열영동 현상을 포함하였다. 가열온도가 낮을수록, 초기 TiCl₄농도가 높을수록 또는 전체 기체유량의 속도가 빠를수록 생성된 TiO₂ 입자의 농도가 높게 나타났고, 반면에 반응온도, TiCl₄초기농도가 높을수록 또는 전체 기체유량의 유속이 느릴수록 TiO₂ 입자의 직경은 크게 나타났다.

The results of numerical model for a tube furnace reactor were proposed to manufacture ultrafine TiO₂ powders. The model equations such as continuity, energy balance and mass balance equations, and the 0th, 1st, and 2nd moment equations of aerosols were considered. The phenomena such as TiCl₄ reaction rate, TiO₂ nucleation rate and the coagulation, diffusion and thermophoresis of TiOz powders were included in the aerosol dynamic equations. It is found that the TiO₂ particle concentration becomes higher, as the furnace temperature decreases and also as the inlet TiCl₄ concentration and the total gas flow rate increase. On the other hand, the TiO₂ particle size increases, as the furnace temperature and the inlet TiCl₄, concentration increase and also as the total gas flow rate decreases.