The observation of residual ozone decomposition with the purpose of near-zero gas emission was conducted during the process of simultaneous multi-pollutants removal by ozone. A 300 MW boiler flue gas conditions were simulated. The effects of bath temperature, spray temperature, additives species and concentration of additives were attentively employed to conduct the residual ozone decomposition. The increase of bath temperature and spray temperature can improve the residual ozone decomposition. The residual ozone decomposition can be obviously promoted in spray tower when the spray liquid containing reductive substances. Concentration of additive had a positive effect on ozone decomposition. Compound additive （CaSO3+(NH4)2SO4 or Na2SO3+NaNO2） achieved the highest decomposition among them. The ozone emission at the exit was 0.03×10-6～0.04×10-6, which could satisfy the national emission limit of 0.047×10-6．
LIN Fa-wei, ZHU Yan-qun, XU Chao-qun, MA Qiang, WANG Zhi-hua, ZHOU Jun-hu, CEN Ke-fa. Experimental study on residual ozone decomposition in process of multi-pollutants removal by ozone. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2015, 49(7): 1249-1254.
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