焦煤比对烧结烟气中挥发性有机物排放特性的影响

采用PF-300便携式甲烷、总烃、非甲烷总烃测试仪对烧结杯实验产生的烟气进行挥发性有机物含量分析，研究了烧结燃料焦煤比对烟气挥发性有机物排放特性的影响，结果表明：挥发性有机物在烧结过程中持续释放，其排放趋势与NOx相一致；TVOCs和MHC的生成与煤粉和焦粉的挥发分有显著的相关性，以煤粉为主要燃料时，适当配加焦粉不仅对TVOCs和MHC具有物理减排效应，还存在煤焦混合协同减排的效应.同时对国内某钢铁烧结机进行TVOCs排放浓度及分样组成检测，表明：该钢铁烧结机烟气中挥发性有机物排放浓度较高，其结果与烧结杯实验所得曲线一致；烧结工序VOCs分样检测主要化合物为乳酸乙酯、丙酮、苯、甲苯、正己烷等.

Influence of coking coal ratio on emission characteristics of volatile organic compounds in sintering flue gas

The PF-300 portable methane, total hydrocarbon, and non-methane total hydrocarbon tester was used to analyze the volatile organic compound content of the flue gas generated in the sintering cup experiment, and the effect of the sintering fuel coke-to-coal ratio on the emission characteristics of flue gas volatile organic compounds was studied.:Volatile organic compounds are continuously released during the sintering process, and their emission trends are consistent with NO_x; the generation of TVOCs and MHC is significantly related to the volatile content of pulverized coal and coke powder. When pulverized coal is used as the main fuel, appropriate mixing Coke powder not only has a physical emission reduction effect on TVOCs and MHC, but also has the effect of coal coke mixing and synergistic emission reduction. At the same time, a domestic steel sintering machine was tested for TVOCs emission concentration and sub-sample composition, which showed that the volatile organic compound emission concentration in the flue gas of the steel sintering machine was higher, and the result was consistent with the curve obtained from the sintering cup experiment; the sintering process VOCs was tested separately. The main compounds are ethyl lactate, acetone, benzene, toluene, n-hexane and so on.