In order to prove the feasibility of using stilled water in DeNOx reactor,a lab test was done for ammonia distillation to analyze the composition of distillate.The result shows that the stilled water after ammonia distillation contains oil phase,which would poison the catalyst and cause higher cost in adding NaOH for neutralization reaction due to sulfur ion,chorion and others metallic ion in the purified ammonia liquor.In conclusion,the stilled water is not suitable for application in coke oven waste gas DeNOx.

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