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1 实验部分
1.1 实验装置
Fig. 1 Schematic diagram of diaphragm electrolysis seawater

Fig. 2 Schematic diagram of exhaust gas clean-up

1.2 实验方法
η=Cin−CoutCin×100% | (1) |
2 隔膜电解海水脱硫脱硝反应过程
2Cl−(aq)−2e−→Cl2(g) | (2) |
2H2O(l)+2e−→2OH−(aq)+H2(g) | (3) |
Cl2(g)↔Cl2(aq) | (4) |
Cl2(aq)+H2O(l)↔HClO(aq)+HCl(aq) | (5) |
HClO(aq)↔H+(aq)+ClO−(aq) | (6) |
Table 1 Reaction process of desulfurization and denitration of seawater diaphragm electrolysis
Table 1 Reaction process of desulfurization and denitration of seawater diaphragm electrolysis
污染物 | 反应形式 | 反应方程式 | 序号 |
SO2 | SO2水解 | SO2(g)↔SO2(aq) | (1) |
SO2(aq)+H2O(l)↔HSO3-(aq)+H+(aq) | (2) | ||
HSO3-(aq)↔SO32-(aq)+H+(aq) | (3) | ||
HClO氧化 | HClO(aq)+SO32-(aq)→SO42-(aq)+HCl(aq) | (4) | |
HClO(aq)+HSO3-(aq)→SO42-(aq)+Cl-(aq)+2H+(aq) | (5) | ||
NaOH吸收 | SO2(aq)+2OH-(aq)→SO32-(aq) +H2O(l) | (6) | |
HCO3-吸收 | SO2(aq)+HCO3-(aq)→HSO3-(aq)+CO2(aq) | (7) | |
NO | HClO氧化 | NO(g)↔NO(aq) | (8) |
HClO(aq)+NO(aq)→NO2(aq)+HCl(aq) | (9) | ||
3NO2(aq)+ H2O(l)→2HNO3(aq)+NO(aq) | (10) | ||
2NO2(aq)+ H2O(l)→HNO3(aq)+ HNO2(aq) | (11) | ||
NaOH吸收 | 2NO2(aq)+2OH-(aq)→NO2-(aq)+NO3-(aq)+H2O(l) | (12) |
3 结果与讨论
3.1 直接海水洗涤与隔膜电解海水洗涤脱硫脱硝效率比较
Fig. 3 Comparison of removal efficiencies of SO2 and NO of seawater scrubbing and seawater diaphragm electrolysis
Fig. 3 Comparison of removal efficiencies of SO2 and NO of seawater scrubbing and seawater diaphragm electrolysis

3.2 NO和SO2初始浓度对脱硫脱硝效率的影响
Fig. 4 Effect of initial NO concentration on removal efficiencies of SO2 and NO

Fig. 5 Effect of initial SO2 concentration on removal efficiencies of SO2 and NO
Fig. 5 Effect of initial SO2 concentration on removal efficiencies of SO2 and NO

3.2.1 NO初始浓度对脱硫脱硝效率的影响
3.2.2 SO2初始浓度对脱硫脱硝效率的影响
NO2(g)+NO(g)+NaOH(aq)→2NaNO2(aq)+H2O(l) | (7) |
3.3 气体流量对脱硫脱硝效率的影响
Fig. 6 Effect of flue gas flow rate on removal efficiencies of SO2 and NO

3.4 海水电解时间对脱硫脱硝效率的影响
Fig. 7 Effect of seawater electrolysis time on removal efficiency of SO2

Fig. 8 Effect of seawater electrolysis time on removal efficiency of NO

3.5 氧化液有效氯初始浓度对脱硫脱硝效率的影响
Fig. 9 Effect of available chlorine content on removal efficiencies of SO2 and NO
Fig. 9 Effect of available chlorine content on removal efficiencies of SO2 and NO
