降膜反应法氢氧化钠烟气脱硫的实验研究  

Experimental Study on NaOH Flue Gas Desulfurization by Falling Film Reaction

作　　者：张学景[1] 王随林[1] 秦波[1] 国玉山[1] 潘树源[1] 

机构地区：[1]北京建筑工程学院,北京100044

出　　处：《工业锅炉》2012年第1期23-26,共4页Industrial Boilers

摘　　要：基于降膜反应法,采用氢氧化钠溶液进行烟气脱硫的实验研究,重点考察了气液在不同工况下的脱硫效果。实验表明:脱硫效率随SO2初始浓度的增大而减小;液气比越高,系统的脱硫效率越高,但到一定程度后提高不明显;在pH=8～13.3范围内,pH值越大脱硫效率越高,较低的pH值时液气比对脱硫效率的影响更明显;脱硫效率随着吸收液温度的上升而呈下降趋势;NaOH吸收液的脱硫效果要比CaO吸收液脱硫效果更好。实验研究旨在为探讨绿色低碳的脱硫技术提供参考。Basing on falling film reaction, experimental study on flue gas desulfurization using NaOH solution is carried out to inspect the effect of in different conditions of gas-liquid. Experiments show that： Desulfurization efficiency decreases with the increase SO2 initial concentration ; the higher the liquid - gas ratio, the higher the desulfurization efficiency of system, however, it will not be obvious to some extent; in the range of pH =8 ~ 13.3, the higher the pH, the higher the desulfurization, and liquid - gas ratio is more apparent in lower pH ; desulfurization efficiency decreases with the increasing absorption temperature; the desulfurization of NaOH absorbing solution is much better than CaO absorbing solution.

关 键 词：SO2初始浓度 液气比 吸收温度 脱硫效率 

分 类 号：X701.3[环境科学与工程—环境工程]