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.

What to expect

A single ejector element is limited by the ratio between its discharge and suction pressure (depending on the motive steam pressure and the back pressure) and the maximum load capacity.

These ejectors are placed either in series or in parallel, with or without intermediate condensers, to operate within a very large range of conditions and at lower absolute suction pressures compared to a single stage unit.

AB PROGETTI VACUUM SYSTEMS HAVE BEEN INSTALLED WITHIN VARIOUS TYPES OF APPLICATIONS, INCLUDING:
  • refining plants

  • power plants and energy plants which are  environmental-friendly

  • cogeneration plant

  • desalination or water-power plants
    (MSF and MED)

  • chemical industries
    (urea, ammonia and fertilizers production)

  • ship-building industries

Vacuum System Stage Ejectors Scheme

THE FIGURES BELOW DISPLAY SOME OF THE EJECTOR ARRANGEMENTS THAT ARE USED ACROSS the INDUSTRies
Single stage ejector
3 staged ejector with intercondenser between 2nd and 3rd stage
3 staged ejector system with intercondensers

(3rd stage to the atmosphere)

2 staged ejector system with intercondensers

(2nd stage to the atmosphere)

4 staged ejector system

(1st stage of non condensing type)

2 staged ejector system

(non condensing type)

5 staged ejector system

(1st and 2nd stages of non condensing type)

2 – staged vacuum system for desalination plant with start-up ejector

Production capacity: 16 Million Gallons per day
Condensers materials: shell ASTM A 240 TP 317 L, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 715000, water boxes ASTM A 240 TP 317 L
Ejector body material:
ASTM A 240 TP 904 L
Start-up ejector body material:
ASTM A 240 TP 316 L

> Saudi Arabia

2 – staged vacuum system for desalination plant

Production capacity: 16 Million Gallons per day
Assembly of Pre-condenser
Materials: shell ASTM A 240 TP 317 L, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 715000, water boxes ASTM A 240 TP 317 L

> Saudi Arabia

2 – staged vacuum system for desalination plant with start-up ejector

Production: 18 Million Gallons per day
Condensers materials:
shell ASTM A 240 UNS31803, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 715000, water boxes ASTM A 240 UNS31803
Ejector body material: UNS S31803
Start-up ejector body material: UNS 2304

> UAE

2 – staged vacuum system for desalination plant with start-up ejector

Production capacity: 18 Million Gallons per day
Condensers materials: shell ASTM A 240 UNS31803, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 715000, water boxes ASTM A 240 UNS31803
Ejector body material: UNS S31803
Start-up ejector body material: UNS 2304

> UAE

3 – staged vacuum system for desalination plant with start-up ejector

Production: 14 Million Gallons per day
Condensers materials: shell ASTM A 240 UNS NO 8904, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 63000, water boxes ASTM A 240 UNS NO 8904
Ejector body material:
ASTM A240 NO 8904
Start-up ejector body material:
ASTM A240 NO 8904

> UAE

2 – staged vacuum system for petrochemical plant with start-up ejector

Materials: shell ASTM A 106 GR. B, tubes SB 111 C715, tubesheets ASTM SA 266M Cl. 2, water boxes ASTM A 106 GR. B
Ejector body material: SA 105

> Texas (USA)

Separator with pumps of 2-staged vacuum system for refinery with seal liquid cooler, seal liquid separator, Ejector effluent separator, LRP

Precondenser weight: 27000 Kgs
Condensers materials: shell A 516 Gr 60, tubes A 179, tubesheets ASTM A 350 LF2 Cl.1, water boxes A 516 Gr 60
Ejector body material: SA 516 Gr. 60 / SA 333 Gr.6 / SA 350 LF2 Cl.1
Pump Material: AISI 316L, SAF 2205
Separators material: SA 516 Gr 60
Cooler materials: shell A 516 Gr 60, tubes A 179, tubesheets ASTM A 350 LF2 Cl.1 , water boxes A 516 Gr 60

> Portugal

Pre-condenser of 2-staged vacuum system for refinery with seal liquid cooler, seal liquid separator, Ejector effluent separator, LRP

Pre-condenser weight: 27000 Kgs
Condensers materials: shell A 516 Gr 60, tubes A 179, tubesheets ASTM A 350 LF2 Cl.1, water boxes A 516 Gr 60
Ejector body material: SA 516 Gr. 60 /SA 333 Gr.6/ SA 350 LF2 Cl.1
Pump Material : AISI 316L, SAF 2205
Separators material: SA 516 Gr 60
Cooler materials: shell A 516 Gr 60, tubes A 179, tubesheets ASTM A 350 LF2 Cl.1, water boxes A 516 Gr 60

> Portugal

Inter-condenser of 2-staged vacuum system for refinery with seal liquid cooler, seal liquid separator, Ejector effluent separator, LRP

Pre-condenser weight: 27000 Kg
Condensers materials: shell A 516 Gr 60, tubes A 179, tubesheets ASTM A 350 LF2 Cl.1, water boxes A 516 Gr 60
Ejector body material: SA 516 Gr. 60 /SA 333 Gr.6/ SA 350 LF2 Cl.1
Pump Material: AISI 316L, SAF 2205
Separators material: SA 516 Gr 60
Cooler materials: shell A 516 Gr 60 , tubes A 179, tubesheets ASTM A 350 LF2 Cl.1 , water boxes A 516 Gr 60

> Portugal

3 – staged vacuum system for desalination plant with start-up ejector

Production capacity: 14 Million Gallons per day
Condensers materials: shell ASTM A 240 UNS NO 8904, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 63000, water boxes ASTM A 240 UNS NO 8904
Ejector body material:
ASTM A240 NO 8904
Start-up ejector body material:
ASTM A240 NO 8904

> UAE

2 – staged vacuum system (joint water box type) for refinery with start-up ejector

Condenser materials: shell ASTM A 106 Gr.B, tubes ASTM SA 179, tubesheets ASTM A 105, water boxes ASTM A 106 Gr.B
Ejector body material: ASTM A 105

> Qatar

Two ejector stage, one condenser stage vacuum system (BEU type) for petrochemical plant

Condenser materials: shell ASTM A 106 Gr.B, tubes ASTM SA 179, tubesheets ASTM A 105, water boxes ASTM A 106 Gr.B
Ejector body material: ASTM A 105

> Qatar

2 – staged vacuum system for desalination plant with start-up ejector

Condensers materials: shell UNS 8904, tubes ASTM B 338 GR. 2, tubesheets BS 2875 CA 105, water boxes UNS 8904
Ejector body material: ASTM A240 TP317L
Start-up ejector body material:
ASTM A240 TP317L

> UAE

2 – staged vacuum system for refinery with start-up ejector

Materials: shell ASTM A 106 GR B, tubes ASTM A 249 TP 304L, tubesheets ASTM A 105, water boxes ASTM A 106 GR B
Ejector body material: ASTM A 105
Start-up ejector body material:
ASTM A 105

> Greece

2 – staged vacuum system for desalination plant with start-up ejector

Condensers materials: shell ASTM A 240 TP 316 L, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 706000, water boxes ASTM A 240 TP 316 L
Ejector body material: UNS N0 8020
Start-up ejector body material:
UNS N0 8020

> Saudi Arabia

2 – staged vacuum system (joint water box type) for cogeneration plant with start-up ejector

Materials: shell A 240 Tp 316 L, tubes ASTM A 249 Tp 316 L, tubesheets A 240 Tp 316 L, water boxes ASTM A 516 – 60
Ejector body material: A 105
Start-up ejector body material A 105

> United Kingdom

2 – staged vacuum system for refinery with start-up ejector

Materials: shell UNS NO 8904, tubes ASTM B 338 GR. 2, tubesheets UNS NO 8904, water boxes UNS NO 8904
Ejector body material: AISI 316L
Start-up ejector body material:
ASTM A240 AISI 316L

> Greece

2 – staged vacuum system for desalination plant with start-up ejector

Production: 15 Million Gallons per day
Materials: shell ASTM A 240 UNS NO 8904, tubes ASTM B 338 GR. 2, tubesheets ASTM B 171 C 715000, water boxes ASTM B 171 C70600
Ejector body material: ASTM A240 TP316L
Start-up ejector body material:
ASTM A240 TP316L

> Kuwait

2 – staged vacuum system for petrochemical plant

Materials: shell ASTM A 240 Tp 304 L, tubes ASTM A 249 Tp 304 L, tubesheets ASTM A 240 Tp 304 L, water boxes ASTM A 106 GR. B
Ejector body material: AISI 304L
Precondenser weight: 35000 Kg

> Italy

2 – staged vacuum system for petrochemical plant with condensate drum

Materials: shell A 387 Gr 5 Cl 2, tubes ASTM A 213 T 5, tubesheets ASTM A 182 F 5, water boxes A 516 Gr 70
Ejector body material: A 182 F 5
Drum material: A 516 Gr 70

> Italy

2 – staged vacuum system for petrochemical plant

Condensers materials:
shell ASTM A 516-70, tubes ASTM A 179, tubesheets ASTM A 350 LF2 CL.1, water boxes ASTM A 516-70
Ejector body material: ASTM A 516-70

> Italy

2 – staged vacuum system for petrochemical plant

Condensers materials:
shell ASTM A 516-70, tubes ASTM A 179, tubesheets ASTM A 350 LF2 CL.1, water boxes ASTM A 516-70
Ejector body material: ASTM A 516-70

> Italy

2 – staged vacuum system for petrochemical plant

Condensers materials:
shell ASTM A 516-70, tubes ASTM A 179, tubesheets ASTM A 350 LF2 CL.1, water boxes ASTM A 516-70
Ejector body material: ASTM A 516-70

> Italy