A question about the catalytic cracking torch line
Thread Content
There are valves and blind plates before the flare line of the catalytic cracking unit enters the pipe network, which is used to cut off the flare pipe network during shutdown and maintenance. Some devices have a condensate discharge line (condensate tank) and a vent valve in front of the flare line inlet pipe network boundary valve. What is the function of this vent valve?
The function of the vent valve is a check method to ensure that the pipeline is purged in place during startup and shutdown!
This valve is useful when a single torch is shared across the entire plant. It is convenient for purging and inspection when starting and stopping a single area. At the same time, the purpose of condensation discharge is also to prevent condensation in each area from being brought into the public pipe network.
If the pipeline from the torch liquid tank to the boundary area is very short, is it still necessary to add this vent?
Of course you should! No matter how short it is, there will still be residual gas. After the shutdown, a blind plate was added to the boundary area, which has no impact on the outside of the device. However, if the torch system inside the device is not purged clean, there will still be a huge safety hazard!
1. Sweep the line and vent the condensation at the low point. . . 2. Check. . .