Methanol issue
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Can ordinary plate flanges be used for methanol pipelines at atmospheric pressure? Is it necessary to connect static discharge wires to the pipelines, and what are the requirements regarding flow velocity?
Methanol is flammable and explosive, and static electricity can easily generate at the pipe connection flanges and valves; it is advisable to implement static electricity bonding.
Generally, flanges with fewer than 5 bolts require bridging, and the simplest method of bridging is to use copper sheets.
For methanol pipelines at normal pressure, ordinary plate flanges cannot be used; according to the specifications, HG20595 standard flanges must be employed. The pipelines must be connected to static discharge wires, and the required flow rate is 0.8~1 m/s.
If the gasket is a metal one, is it necessary to use a jumper wire for anti-static purposes?
If the gasket is a metal one, it is still necessary to connect a bonding wire for anti-static purposes.
The flow rate of methanol is required by specifications to be no more than 3 m/s.