CGS Tray Tower Gas Absorbers

In the gas cooling/condensing/absorption operation, a vertical tower containing a number of trays is often used to contact the hot gas with cooling liquid. Water is the most commonly used liquid for cooling/condensing application. The trays provide the intimate contact between the gas and the liquid where the interphase energy and mass transfer take place. A certain type of tray, such as sieve, impingement or valve tray is selected to meet your performance requirements. The hot gas is cooled by the liquid and, usually, with the simultaneous condensation of its condensable component into the liquid.

The liquid enters the tower at the top and flows downward by gravity. On the way, it flows across each tray and through a downcomer to the tray below. The gas enters the tower near the bottom and is directed upwards through the openings of one sort or another in the tray. It bubbles through the liquid to form a froth (an intimate contacting zone), separates from the liquid, and moves onto the next tray above. Overall, this is a multiple-staged countercurrent contact of gas and liquid, although it is a cross-flow contact of the two on each tray.

The cooled gas passes through a mist eliminator (typically a mesh pad or chevron type) to remove most of its entrained liquid droplets and exits the tower at the top. The cooling liquid, now becoming hot liquid, flows to the sump of the tower or an external tank. It can be discharged out of the system, or recycled back to the tower after it is cooled by a heat exchanger. For a condenser operating in a recycling mode, a slip stream is normally bled off the liquid loop to get rid of the condensate.

CGS can custom design and supply the most suitable tower for your cooling &/or condensing &/or gas absorption applications.