O3 /NaClO气液相氧化吸收剂同时脱硫脱硝试验研究

提出以O₃/NaClO为复合吸收剂对火电厂烟气进行同时脱硫脱硝的方法,研究了该方法在不同条件下的脱硫脱硝效率。模拟实际工况,给定SO₂与NO的初始质量浓度分别为600 mg/m³ 和500 mg /m³。模拟试验结果表明：在臭氧投加量为5.35 g/h,NaClO摩尔浓度为15 mmol/L,吸收液初始pH值为5,液气比为50 L/m³,反应温度为50 ℃时,脱硫和脱硝效率分别可达97.04%和95.08%。所研究的方法工艺操作简单,脱除SO₂和NO_x速度快,不存在堵塞、结垢等问题,若能有效降低O₃的生产成本,则具有较好的实用意义和推广应用前景。

Experimental Research on Simultaneous Desulfurization and Denitrification by O3/NaClO Gas-Liquid Phase Oxidation

In this paper, a new method of simultaneous desulfurization and denitrification by O₃/NaClO composite sorbent for thermal power plants is proposed. Its efficiencies of desulfurization and denitrification are also tested under different conditions. Considering the actual operation conditions, the initial concentration of SO₂ and NO_x are set as 600 mg/m³ and 500 mg/m³, respectively. The results indicate that the efficiencies of desulfurization and denitration reach as much as 97.04% and 95.08% respectively under the following conditions: ozone dosage, 5.35 g/h; NaClO concentration, 15 mmol/L; absorption solution initial pH value, 5; ratio of liquid to gas, 50 L/m³; and reaction temperature, 50 ℃. Additionally, this method has the advantages of simple operation procedures and fast SO₂ and NO_x removal without any clogging or scaling issues. If the production cost of O₃ can be reduced effectively, it is certain that this new method will have a very promising industrial application prospect.