What type of gasket is used in liquid chlorine systems?
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This post was last edited by sunjl1981 on 2013-1-6 at 23:31. What kind of gaskets are used in chlorine liquid systems? Asbestos # , , &
Selection is based on pressure; generally, asbestos is used.
Asbestos gaskets are not allowed in chlorine systems; tetrafluoroethylene gaskets or metal-wound gaskets are generally used instead.
Asbestos pads are not suitable; metal pads can be used, and pure polytetrafluoroethylene pads are the best choice.
It’s better to use PTFE; in our company, the flanges at the filling heads used to leak frequently, so we switched to PTFE
I suggest that those on the 2nd floor refrain from speaking if they really don’t know; it can lead to problems. . . . . Pads made of PTFE are the best choice without a doubt.
Perfluorinated or metal-coated droplets... Asbestos cracks easily under high pressure; liquid chlorine is extremely dangerous... Under no circumstances should you try to save money here
Use PTFE or high-pressure asbestos gaskets.
Perfluorinated ones are better; don’t go for cheap options, as there is a risk of chlorine leakage
Perfluoro is better; we’ve been using it. It’s even better to wrap it with a layer of flexible perfluoro tape, although that increases the cost. The chlorine permeability is way too high~~~
Our plant uses a low-temperature, low-pressure process for the production of liquid chlorine. In the past, high-pressure asbestos gaskets were used, and no incidents occurred as a result of that. Later, at the request of the boiler inspection agency, metal wound gaskets were adopted. However, the fact that no incidents have happened so far doesn’t mean that nothing can go wrong; I think it’s wise to be cautious in areas where major production safety accidents could occur
Asbestos rubber polytetrafluoroethylene coated gaskets can also be used.
Our plant uses a low-temperature, low-pressure process for the production of liquid chlorine. In the past, high-pressure asbestos gaskets were used, and no incidents occurred as a result of that. Later, at the request of the boiler inspection agency, metal wound gaskets were adopted. However, the fact that no incidents have happened so far doesn’t mean that nothing can go wrong; I think it’s wise to be cautious in areas where major production safety accidents could occur
Now our factory uses PTFE or metal gaskets everywhere. The current asbestos pads seep out under even slight pressure.
Have any of you considered that PTFE gaskets are quite slippery? They tend to loosen at certain points that move frequently, leading to leaks. My personal suggestion is to use lead gaskets, which can be secured in place once (they are designed for single-use), as they offer safety and reliability
High-pressure asbestos gaskets, steel-wound PTFE gaskets, and graphite gaskets are all suitable. . . . At first we used steel wrapping, but found that there was too much leakage, so we switched to using high-pressure asbestos gaskets wrapped with PTFE. . . . . . .
In response to the comment on floor 15: For chlorine gas pipeline flanges and valves, using metal-wrapped gaskets with male and female surfaces is the safest option. Our company experienced a leak in a liquid chlorine storage tank in July 2005; however, since the plant had just started operating at that time, the accident caused no losses. It was mainly because the deputy workshop director and the production manager directed three of us to handle the situation successfully.
Polytetrafluoroethylene gaskets or neoprene gaskets should be used. Of course, polytetrafluoroethylene gaskets are a bit more expensive, but they are durable; metal gaskets must not be used, as problems will arise over time
Rubber gaskets cannot be used in liquid chlorine systems. (For safety reasons: Using rubber pads can generate static electricity, which may cause an explosion of nitrogen trichloride)
EPDM gaskets are better! Others like tetrafluoride are expensive! Metal winding is basically not used