Steam Jet Air Ejector (SJAE)

SingleStage Steam Jet Ejectors are based on the ejectorventuri principle. In operation, steam issuing through an expanding nozzle has its pressure energy converted to velocity energy. A vacuum is created and the high velocity of steam entrains air or gas and the mixture of gas and steam enters the converging end of the venturi, passes through the diffuser where its velocity energy is converted into pressure sufficient to discharge against a predetermined back pressure. Single stage steam jet ejectors are used to create vacuum covering 40 mm Hg. Absolute. Two Stage Ejector with Condenser The system is the assembly of two units whose construction is similar to single stage with inter condenser (direct contact type or surface type). Steam of the first stage is expanded through nozzle entrains the air or other gases and discharges them to diffusers at a higher pressure in the condenser.

Water jet ejector uses water as motive force. Liquid Jet Eductors use the kinetic energy of a motive liquid to entrain another liquid,completely mix the two, and then discharge the mixture against a counter pressure and are used in large numbers throughout industry for pumping and mixing operations. Water Jet Eductors consist of three basic components, namely a converging nozzle, a diffuser (or venturi), and a body to hold these parts in their relative positions and to provide a suction (or mixing) chamber. In addition, they can be equipped with accessories such as regulating spindles. Water Jet Eductors can also be staged with higher vacuum steam ejectors. In this case, the eductor serves both as the final pumping stage as well as a fairly good direct contact condenser, condensing the motive steam from the high vacuum steam ejectors.

Jet Flow Steam Jet Ejector and Liquid Ring Pump Combination type Hybrid Ejectors Systems are getting popular in major Chemical, Soap, Food, Edible oil sectors. A typical combination of steam jet ejector system followed by inter-condenser and liquid ring vacuum pump. This type of combination system can achieve vacuum as high as 0.05 Torr. It can be configured as single or multistage ejectors, single or two stage liquid ring vacuum pumps and inter-condenser. It is designed to operate at the same capacities and suction pressures as conventional steam jet ejector systems. Jet Flow Hybrid Ejectors provide a solution for high vacuum operations. They are versatile in handling both wet and dry loads, can be supplied with low level skid mounted packages with instrumentation and with closed loop seal water recycle system for vacuum pumps for the total reduction of effluent. Jet Flow combination type vacuum systems major applications in distillation, evacuation, drying, evaporation, cooling etc.

Large industrial plants often vent significant quantities of low pressure steam to the atmosphere, wasting energy, water, and watertreatment chemicals. Recovery of the latent heat content of lowpressure steam reduces the boiler load, resulting in energy and fuel cost savings. Lowpressure steam's potential uses include driving evaporation and distillation processes, producing hot water, space heating, producing a vacuum, or chilling water. If the steam pressure is too low for the intended application, a steam jet thermocompressor can boost the pressure and temperature to the required level. Operating Principles - Thermocompressors and ejectors operate on the same thermodynamic and physical principle energy contained in high pressure steam can be transferred to a lower pressure vapor or gas to produce a mixed discharge stream of intermediate pressure.