摘要
In the current waste gas sampling of fixed source,it is required that deviation of tracking rate of constant velocity sampling should not be more than 10%.When flow rate of the waste gas is less than 5 m/s,the tracking rate can not meet this requirement.The sampling of fixed velocity can meet the requirement of particulate matter sampling on gas collection volume at low velocity.Through the comparison of two different methods for the determination of particulate matter in waste gas under the low flow velocity of flue gas,it was found that there were some differences between the fixed velocity measurement and the constant velocity measurement.The results showed that measurement result of the fixed velocity was higher than that of constant velocity measurement under low velocity.At the same time,the deviation of fixed velocity measurement was not obvious under different low velocity.
In the current waste gas sampling of fixed source,it is required that deviation of tracking rate of constant velocity sampling should not be more than 10%. When flow rate of the waste gas is less than 5 m/s,the tracking rate can not meet this requirement. The sampling of fixed velocity can meet the requirement of particulate matter sampling on gas collection volume at low velocity. Through the comparison of two different methods for the determination of particulate matter in waste gas under the low flow velocity of flue gas,it was found that there were some differences between the fixed velocity measurement and the constant velocity measurement. The results showed that measurement result of the fixed velocity was higher than that of constant velocity measurement under low velocity. At the same time,the deviation of fixed velocity measurement was not obvious under different low velocity.
基金
Supported by the Shihezi Science and Technology Plan(2018JZ08)
the National Natural Science Foundation of China(21667026)
