ABSTRACT
On the falling film desulfurization test system of double-pH, under 45 ° C, gas-liquid two-phase operating parameters on single tower falling film desulfurization process, of which, including the pH of liquid phase parameters (3.5, 4, 4.5, 5, 5.5), slurry concentration (130, 145, 160 g/L) and liquid-gas ratio (15, 20, 25 L/Nm3); vapor parameters including the velocity of flue gas (3.2, 3.7, 4, 4.5 m/s) and absorption tower entrance SO2 concentration (2000, 3000, 4000, 5000, 6000, 8000 mg/Nm3). In the process of test on the system performance parameters were measured, the
1 INTRODUCTION
Since 21 Century, the environment problem is one of the most serious challenges in the world. China’s coal-fired power, large consumption of coal has caused a large amount of SO2 discharged. Pollution caused by acid rain is becoming more and more serious in our country [1]. In order to reduce the thermal power plant emissions of SO2 and the pollution of the atmosphere further, to meet the relevant national standards for the discharge of requirements, especially to meet particular emission limit value index of key areas, according to the characteristic of the wet flue gas desulfurization process, there is the urgent need for further research, more greatly improve the desulfurization efficiency, achieved discharge standards [2].
