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AB PROGETTI
AB PROGETTI
About AB Progetti
AB Progetti is one of the leaders in vacuum devices production. More than 70 years of experience in steam jet ejector and vacuum systems manufacturing: from the past to the present, we have been ensuring and helping our partners in achieving their manufacturing targets and production demands through long term customer satisfaction and incomparable after sales services. Our key to success if through continuous improvement of reliability and product efficiency, apart from ensuring safety measures.
Steam Jet Ejectors
The Steam Jet Ejectors have no moving parts and operate by the combined action of a high-pressure stream entraining the air and other vapors (or liquids) at a lower pressure entering the moving stream. Once inside, they are then removed from the process system at an intermediate pressure, higher than the suction pressure but at times lower than the motive steam pressure.
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Booster ejector of a three staged vacuum system for refinery
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1st stage ejector of a two staged vacuum system for desalination plant
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Spare nozzles for ejectors in nuclear power plant
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2nd stage ejector of two staged vacuum system for desalination plant
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Inductive Factor 1 sensors
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2nd stage ejector + start-up ejector of a two staged vacuum system for desalination plant
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1st stage ejector of a two staged vacuum system for desalination plant with start-up ejector
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Water ejector for drains extraction system
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Booster ejector of three staged vacuum system for refinery
Vacuum Systems
Vacuum System Ejectors are utilized in series or in parallel to operate over a very large range of conditions, as well as at lower absolute suction pressures compared to a single stage unit.
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SINGLE STAGE EJECTOR
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3 STAGED EJECTOR WITH INTERCONDENSER BETWEEN 2ND AND 3RD STAGE
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3 STAGED EJECTOR SYSTEM WITH INTERCONDENSERS
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2 STAGED EJECTOR SYSTEM WITH INTERCONDENSERS
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4 STAGED EJECTOR SYSTEM
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2 STAGED EJECTOR SYSTEM
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5 STAGED EJECTOR SYSTEM
Gland Condensers
Gland Condensers are small heat exchangers used to condense the steam that leaks past the
first section of seals within the shaft of a steam turbine.
Whenever the turbine exhausts into a vacuum system, it is necessary to inject the sealed
steam within the seals to keep away the low-pressure end of the turbine from drawing in
atmospheric air.
This sealing steam from the low-pressure end and the normal leakage from the high-pressure end
would tend to leak out and blow towards the bearing housing. To reduce the chance of this
leakage causing an accumulation of water in the lube oil system, we use a gland steam
condenser to draw a very small vacuum (typically 2 or 3 in-Hg) within the outer section of
the shaft seals.
Heat Exchangers
Heat Exchangers are static machines to condensate vapors and steam by using a cooling fluid flow.
In AB Progetti exchangers, the cooling media usually flows into the tubes and the Shell contains
the steam and vapors to be condensate. The Heat Exchangers can be deployed in many engineering
processes, such as preheaters, gland condensers, and vacuum system condensers.
Just like the ejectors, Heat Exchangers have no moving parts, and hence maintenance cost is low,
and operation is relatively constant when corrosion is not a factor. They also have a quiet,
stable, and user-friendly operation.
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stainless steel
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special alloys like Incoloy or Hastelloy
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copper alloys
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titanium
Liquid Ejectors
The Liquid Ejector system is different from the traditional steam ejector system because its motive fluid is a liquid rather than the traditional steam. The Liquid Ejectors are Venturi jet devices. The motive liquid is flowed through the nozzle and into the mixing chamber. As the cross-sectional area of the mixing chamber is reduced, the velocity of the liquid is increased.
Thermo Compressor
These jet pumps are usually used to reduce the loss of low-pressure steam. The popular advantages of Thermo Compressors, as well as Ejectors, are high reliability and low maintenance cost requirement over the plant’s life. Thermo Compressors are used in a lot of industrial processes that are mostly carried out within vacuum condition – such as evaporation, distillation, cooling, crystallization, deodorization, degassing, drying, and so on. They are also used as heating pumps at pressures equal to or higher than the barometric pressure.
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Diverse fields of application
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High safety operation (no moving parts involved)
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High Reliability
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Low manufacturing cost due to the simplicity of design
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Low maintenance cost