碳酸锰矿浆湿法烟气脱硫反应过程研究  

Reaction Process of Wet Flue Gas Desulfurization with Manganese Carbonate Ore Slurry

作　　者：孙峻[1] 丁桑岚[2] 苏仕军[2] 

机构地区：[1]成都大学建筑与土木工程学院,四川成都610106 [2]四川大学国家烟气脱硫工程技术研究中心,四川成都610065

出　　处：《成都大学学报（自然科学版）》2016年第3期296-299,共4页Journal of Chengdu University（Natural Science Edition）

摘　　要：在磁力和机械驱动双搅拌反应器中对碳酸锰矿浆烟气脱硫的反应过程进行实验研究,考察了矿粉粒度、气相搅拌速度、液相搅拌速度、气液接触面积、温度对反应速率的影响.结果表明:总反应速率随气相、液相搅拌速度增加而增加,随反应温度的升高而降低,与气液面积成正比,但气相搅拌速度对反应速率的影响较液相搅拌速度更为明显;碳酸锰矿浆脱硫的反应属气、液扩散同时控制,但气相扩散阻力为主导性因素;碳酸锰矿浆脱除烟气中的SO2的反应过程总体上属于传质速度控制过程而非动力学控制过程,应选用能增强气、液、固三相之间传质的喷射鼓泡反应器作为碳酸锰矿浆烟气脱硫的吸收设备.The reaction process of flue gas desulfurization with manganese carbonate ore slurry is studied by using a magnetic and mechanical double stirring reactor. Experiments are carried out to investigate the in- fluence of the powder particle size, gas phase and liquid phase stirring speed, and the gas-liquid contact ar- ea and temperature on the reaction rate. The results show that the total reaction rate increases with the in- crease of the gas and liquid phase stirring speed but decreases with the increase of gas temperature, and is proportional to the gas-liquid area. However, the effect of gas phase stirring speed on the reaction rate is more obvious than that of liquid phase. In experiments, desulfurization with manganese carbonate slurry is controlled by both gas diffusion and liquid diffusion, with the former as the dominant factor. The reaction process of the S02 in flue gas desulfurization with manganese carbonate ore slurry could be generally characterized as a process controlled by mass transfer rate rather than by kinetics. According to the research on the reaction process of the system, the jet bubbling reactor is selected as the absorption apparatus of desulfurization in order to accelerate mass transfer among the phases of gas, liquid and solid.

关 键 词：碳酸锰矿 烟气脱硫 反应速率 控制步骤 传质速度 

分 类 号：TF111.145[冶金工程—冶金物理化学]