Knockout Drums[19/10/2012]
Knockout Drums

Whenever a process requires that entrained droplets be removed from a vapor stream, a knockout drum should be integrated into the system. Condensation can occur when hot process gases cool considerably in the flare gas header and riser, and some gases also go to dew point at ambient temperatures and pressures and can therefore generate liquids. These droplets must be removed in order to avoid...

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Liquid Seals[19/10/2012]
Liquid Seals

The liquid seal drum is a specially designed vessel containing a predetermined level of water in the base of the drum. The main purpose of the liquid seal drum is to stop flame propagation in the unlikely event of flashback. The liquid seal also acts as a large check valve so that gas can not travel upstream for any reason. A third function of the liquid seal is to disentrain liquid droplets....

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Molecular (Labyrinth) Seals

Continuously sweeping a stack with purge gas can result in exorbitant operating expenses over time; especially for large diameter stacks. The Molecular Seal is a purge reduction device which allows the flare system operator to use 98% less purge gas while continually sweeping the system. The savings in daily purge gas consumption over the long run makes for a short payback period on the...

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Sentinel Ultraviolet Flame Monitor

The Sentinel flame monitor reliably provides remote flame detection up to 550 feet away, durability, ease of maintenance, and rapid response time. If the monitor detects the absence of a flame for an adjustable amount of time, a set of dry form C contacts are activated and the pilot re-ignition system is set into motion. Response times are markedly quicker than those of a standard thermocouple...

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Dynamic (Velocity) Seal

The dynamic (velocity) seal is a simple innovation which ensures significant cost savings over time. The reverse conical baffle design reduces flow area in the flare tip while simultaneously increasing purge gas velocity. In combination with the dynamic seal, a constant flow of purge gas will maintain a seal in flare system, ensuring that air infiltration does not occur. A vortex effect is...

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