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CONDENSATE RECOVERY SYSTEM

CONDENSATE RECOVERY SYSTEM

CONDENSATE RECOVERY SYSTEM

(OP)
Hello Everyone

I have a pegging steam line with 40 bar steam pressure, and i installed two steam traps in parallel to drain condensate from it. my condensate load is 120 kg/hr. both steam trap outlets are connected to one collecting tank open to atmosphere. but after installation i saw that both steam traps are low temperature and not at all discharging condensate. when i open the bypass valve all the condensate goes out from bypass only and steam traps remain blocked. i checked the capacity of steam traps and it was in the range still i am not understanding what went wrong, please suggest me any remedy...

RE: CONDENSATE RECOVERY SYSTEM

A few diagrams or details of the steam traps would be good to see otherwise everything is just guesswork. As you say , maybe they are blocked - how are we to know?

What have you investigated so far?

what are the pressures / temperatures / flows?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: CONDENSATE RECOVERY SYSTEM

You may probably have a thermostatic trap that has internals to release steam condensate at a temp even lower than what you would want it to release at - check with the engineer who generated the process / mechanical datasheet for these traps. Else the condensate cooling leg upstream of the trap may be too short ?

RE: CONDENSATE RECOVERY SYSTEM

seems that you have lower pressure steam traps that will never open. careful if they are cast iron, at 40 bar you will bomb yourself. best to use a disc-thermodynamic trap with a strainer up front and a check valve after. rating shall be suitable for the greater of the steam pressure.

RE: CONDENSATE RECOVERY SYSTEM

Thermo-Dynamic traps are recommended for high pressure (8.6 - 40.8 barg) steam line drip traps. Install in following order: globe valve, strainer with blow of valve, thermo-dynamic trap, globe valve. Contact Sarco Company Inc. to get their book - Hook-up Designs for Steam & Fluid Systems.

RE: CONDENSATE RECOVERY SYSTEM

40 bar (580 psi) is actually quite high steam pressure !
As mentioned above, I would put good money the two traps you currently have installed in parallel are not rated for that high differential pressure and are remaining shut.

I would even look into a bi-metallic trap if your looking for more longevity before having to service the traps again.

« Rien ne se perd, rien ne se crée : tout se transforme ».
— Antoine Laurent de Lavoisier (1743-1794)

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