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Multi-Jet Spray Type Barometric Condensers

Principle of Operation of Multi-Jet Spray Type Barometric Condensers

Figure 592 Multi-Jet Spray Type Barometric Condenser consisting of a body, water nozzle case, jet type and spray type nozzles

Fig. 592 Multi-Jet Spray Type Barometric Condensers are generally employed where large capacities are required and where wide fluctuations in water temperature or steam load occur. The flexibility of operation achieved by this condenser is apparent from its design. For full vapor load the rated water capacity is passed through both the spray and jet nozzles.  If the load or water temperature decreases, it is possible to throttle the water to the spray nozzles and ultimately turn them off completely. In the latter case, the condenser is operating similar to the Multi-Jet type, but with a minimum of injection water under the given conditions.

As with other Barometric Condensers, the Fig. 592 Multi-Jet Spray Type Barometric Condenser has no moving parts in the vacuum chamber. Due to this simplicity of design, high performance with easy operation can be anticipated. The absence of moving parts and vacuum pumps reduces downtime associated with equipment involving moving parts.

  • Used extensively in canneries, in sugar, milk, and other food plants; in pulp and paper mills, distilleries; petroleum refineries, and a wide variety of chemical and salt manufacturing companies.
  • A typical use of a standard Multi-Jet Spray Barometric Condenser with evaporators.
  • Spray pond arrangement.
  • Sugar refinery.
Multi-Jet Spray Type Barometric Condenser with evaporator
Multi-Jet Spray Type Barometric Condenser with Evaporator.
This image illustrates a typical use of a standard Multi-Jet Spray Type Barometric Condenser with evaporator. The steam vapors from the evaporator pass through a separator or catch-all, where any liquid carried in suspension is collected and drained back into the evaporator. The vapors pass on to the top inlet of the condenser where the condensing is accomplished by the spray nozzles. The water jets entrain the air and non-condensable gases and discharge them into the barometric tail pipe which drains by gravity into a hot-well. Condensing water is delivered to the nozzles at a slight positive pressure (4 to 5 lbs.), but with light steam loads, the injection water may be throttled and water flow adjusted to meet the vapor load. As indicated in the illustration, no air pumps are required and the installation is simple and foolproof.
Barometric Condenser in spray pond arrangement
Spray Type Barometric Condenser in Spray Pond Arrangement.
In cases where there is a shortage of cooling water, it is necessary to apply a re-cooling system. This is done effectively by a spray pond arrangement, as shown. Two centrifugal pumps are employed; one for delivering the warm water from the hot-well to the spray pond, the other for pumping the cooled injection water to the condenser. Automatic level control is provided by an overflow pipe from spray pond to hot-well.