Air in the flare pipeline
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If air enters the flare pipe, an explosion could occur. What measures can be taken in the design to prevent air from entering the flare pipe? Thank you
If air enters the flare pipe, it could lead to an explosion; under normal conditions, there is a \"molecular seal\" on the flare tip. The acidic gas flare line contains ferrous sulfide; we have experienced several instances of spontaneous combustion and flash explosions in this line, so nitrogen was introduced at the source, and a water seal was installed before the flare inlet.
Generally, they are seal grooves, flame arresters, molecular seals, and dynamic seals.
I agree with you; doesn’t it have a flame arrester installed?
The entire front section of the flare pipeline is equipped with a nitrogen pipeline, and this nitrogen valve remains open to maintain a slight positive pressure in the flare pipeline, thereby preventing air from entering； The end of the flare pipeline is equipped with a liquid seal tank for isolation ； Some torches are also equipped with flame arresters
Nitrogen purging is installed at the end of the flare to maintain a slightly positive nitrogen pressure in the flare at all times. Meanwhile, the torch design includes a liquid separation tank and a liquid seal tank, with three types available: purge gas, gas seal (including velocity seal and molecular seal), and water seal tank; one of these methods or a combination of two can be employed.