Tangential entry separator

Since much of the vented material will be liquid, separators such as knockout pots or tangential entry separators can provide disengagement and possible recovery. Figure 5 is a typical vapor-liquid separator design found to be effective for these applications. Inlet design superficial vapor velocity is about 100 ft/sec, with sufficient volume provided to accumulate the entire reactor liquid contents. The lip on the outlet vapor line and the horizontal plate to separate the accumulated liquid are important features to prevent re-entrainment. 

Gravity settling chamber Tangential entry separators... 

The Process. If a mixture is handled that consists of several ingredients, which are more or less uniform in themselves but vary distinctly from one to another, each ingredient should be handled separately up to the final processing step, then proportioned and mixed just before this step. When pneumaticady conveying a fine fluidizable powder into a bin, a tangential entry into the side of the bin should be used rather than going in at 90° either to the side wad or the top. 

In normal process service, the superficial vapor velocity at the inlet of tangential-entry vapor-liqiiid separators is limited to about 120 to 150 ft/s. Higher velocities may lead to ... 

Because the rotating motion of the gas in the cyclone separator arises from its tangential entry and no additional energy is imparted within the separator body, a free vortex is established. The energy per unit mass of gas is then independent of its radius of rotation and the velocity distribution in the gas may be calculated approximately by methods discussed in Volume 1, Chapter 2. 

W. R. Penney and L. J. Jacobe, "Design of Tangential Entry Gas-Liquid Separators. Sr. Louis... 

In 1935 Dr. Mario Biazzi introduced a further method of continuous manufacture based on the use of stirred vessels for the washing stages and characteristic onion-shaped separators with tangential entries to impart a gentle rotary movement to encourage coalescence and separation (19, 20), Most important perhaps was that this particular arrangement was amenable to remote control from a protected position. It was with the introduction of the Biazzi plants that lead was replaced by stainless steel for reactors and subsequent stages. 

Vortex dryers are characterized by a spiral flow of a particle-gas suspension due to tangential entry of the gas stream into the dryer chamber. Wet material is fed directly into the drying chamber by a screw feeder or nozzle atomizer, or dispersed with the drying medium (air, inert gas, superheated steam, etc.). After performing several spiral trajectories, the particulate material leaves the dryer with an exhaust gas. Alternatively, it may be separated from the gas within the dryer and further discharged via a rotary lock. 

Oil droplets entrained in the exhaust vapor are usually separated by cyclones. Water spray is mixed with the hot gases as they enter the centrifugal blower, where violent turbulence disperses the water and throws the oil and water droplets to the blower walls by centrifugal force. Separation is completed in a tangential entry centrifugal separator that follows the blowers. Volatile organic compounds are directed to the burner used to heat the oil, as already mentioned, or to a combustion chamber if such a burner is not used. 

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