Barometric Leg In Vacuum System

Due to the vacuum condition a secondary pump barometric leg may be required to drain the separator sump.

Barometric leg in vacuum system. The leg itself has these essential principles of design. The barometric leg allows the effluent coolant and condensed vapors to exit no matter what the vacuum is in the process vessel. The minimum height for the barometric leg is.

200 mm Hg abs the slurry has 5 to 10 hard crystalline solids in water. A perfect vacuum can lift water only so A barometric leg is a portion of the vacuum line that is lifted to a height greater than the vacuum is able to lift the water. Since the condensate drains by gravity the barometric leg must be high enough to make sure the condensate does not enter the condenser and flood the lower tubes.

Inadequate Seal Leg Length for Hydrocarbons. Vacuum technology is based upon the creation of an environment in which a process thin film deposition electron beam welding etc can be carried out. A vacuum system can have multiple ejectorcondenser stages wherein each stage incrementally increases pressure until atmospheric pressure is achieved.

Barometric leg is a vertical pipe connecting two vessels one at low pressure or vacuum condition P1 and the other at higher pressure or atmospheric pressure P2. The vacuum is approx. If there is insufficient hotwell area present the seal will be broken and air drawn into the tailpipe affecting the performance of vac-uum-producing equipment and the process.

A barometric leg is basically a condensate drain. Contaminants that cannot be tolerated in the vacuum pump seal water under todays regulatory climate. Rethinking Barometric Legs by D K Singhal 2.

Seal Leg Leak Inside Seal Drum. The minimum required height of the barometric leg is therefore a function of the maximum barometric. This normally implies that one remove air from a system to some acceptable sub atmospheric pressure by the use of some type of vacuum pumping equipment.