The Research Of FGD By Spray Drying And Performance Of System

The glass industry is the foundation industry of national economy. It's one of industry not only consumes energy a lot, but also polluted severely. According to statistics, in 2005 the total discharge SO₂ of our country almost reach 20million tons, among which sheet glass stove discharge accounted for approximately 10percent.The discharge dealing should command the attention of out country. It's also the sustainable development of both environment protection and the mankind. The fuel gas desulphuriation is the only technology used in large-scale commercialized by far in the world. And The semi-dry process has some of the characteristics such as: Simple technology,production easily handled,no wastewater and low investment. The paper attention is paid to the technology of flue gas desulphurization with Spray drying. Set up a mathematical model of the SO₂ takes off process and deducing the function between the efficiency of SO₂ taking off and technological parameter, meanwhile doing the numerical computation.In the process of Spray drying, as Operating parameter have immense influence on it, so the theory study and experiment on it still need to do a lot. But in the process of drying, the mass transfer , momentum transfer and heat transfer are happened in the same time between vapour and fluid, and no any computation method and formula about that until now. It's still the beginning of the process in our country, that we still call for deeper theory study. Such as the function between the efficiency of SO₂ taking off and technological parameter is still imperfect. It's necessary to study the theory.The paper through set up a mathematical model and numerical computation study the affecting factors about efficiency of SO₂ taking off. The result indicated that the following factor are important: the diameter of initial fogdrop,the temperature of smoke air,the speed of the smoke air and the density of the smoke air.Some simulation results are compared with the theoretic calculation and the experimental data, and they are shows a good consistency. The method of the desulphurization process is right.