Static electricity issues with enamel reactors and PPR pipes
Thread Content
The company has 2 small-scale equipment units, namely 1m3 enamel reactors; the pipes used are made of PPR, toluene is used as the solvent in an amount of about 200 kg, and the transfer rate is over 5 m/s. Is it necessary to provide electrostatic grounding for an enamel kettle of this size? Thank you to all the experts
In Changping, Beijing, could an expert tell me what size of equipment or what scale is required in order to implement electrostatic protection?
Could the expert tell us what scale requires electrostatic protection?
I’ve seen enamel reactors used with toluene as a solvent for reactions; the stirring shaft was sealed with PTFE, and it caught fire while stirring!
Why not use carbon steel pipes? Can toluene be handled with PPR pipes?
The reaction takes place in an acidic environment; mainly, enamel-lined equipment is used. The PPR pipes do not come into direct contact with the materials inside the reactor. Methanol gas is circulated through them once every three days, in amounts of several dozen kilograms. Moreover, for cost reasons, PPR is used
:(First, the flow rate can be reduced and the pipe diameter increased; next, nitrogen can be used for displacement to prevent air from entering. The exhaust pipeline must be properly grounded against static electricity. If money permits, the metal casing of the thermometer can be made of zirconium, taking advantage of its electrical conductivity.) The reaction takes place in an enamel-lined reactor, and the stirrer is also made of enamel or PTFE or similar materials. The static electricity connection is used to conduct electricity away from the reactor shell and the stirrer motor; it doesn’t have much effect on the static electricity in the reaction mixture, but it should still be installed as a precaution.
It cannot be considered from a cost perspective; safety is still essential. PPR does not dissipate static electricity, so what will happen in the event of an accident? It’s necessary to follow the design requirements strictly. The safety inspection agency will require you to make corrections, as this represents a serious safety hazard.
A metal tantalum probe can be added to the thermometer sleeve to discharge static electricity, and it’s not expensive!
Static grounding is necessary. The issue of electrostatic discharge must be taken into account for all PPR pipes