What kind of mill is generally used for limestone desulfurization system?
Hello, glad to answer this question for you. At present, the desulfurization processes used in thermal power plants are mainly dry desulfurization and wet desulfurization. Both of these desulfurization processes require limestone powder to make desulfurization agent, so the pulverizer has become an indispensable equipment in the desulfurization system.
According to the different requirements of dry desulfurization and wet desulfurization on the fineness of limestone powder, we can provide different professional grinding equipment configuration schemes.
The absorbent used for dry flue gas desulfurization is calcium carbonate, calcium oxide or even calcium hydroxide, and the fineness requirement range is within 1mm. Smmvik vertical mill, overpressure trapezoidal mill, European mill and other equipment can meet the fineness requirements.
Wet limestone flue gas desulfurization process is the most widely used flue gas desulfurization process in coal-fired power plants today. The required fineness of the desulfurization absorbent limestone powder should be determined according to the characteristics of the limestone and the comprehensive optimization of the desulfurization system and the limestone powder grinding system. For boilers burning coal with medium and low sulfur content, the fineness of limestone powder should ensure a 250 mesh 91% pass rate; when burning coal with high sulfur content, the fineness of limestone powder should be guaranteed to be 325 mesh 90 % pass rate.
For this fineness and sieving rate, SMMVIK VM vertical mill, MTW European mill, TGM super-pressure trapezoidal mill and other equipment are very suitable, and are widely used in large power plants at home and abroad. The effect is remarkable. Moreover, for the limestone pulverizing system for desulfurization of the entire power plant, we can provide a one-stop overall solution, from the initial raw material testing to the later installation, commissioning, acceptance and production, SMMVIK provides full guidance and production testing of main and auxiliary equipment. And a professional technical service team will carry out system maintenance for you in the later stage to ensure the smooth and continuous progress of the later stage desulfurization project.