Material
01Carbon steel
General process vapour and utility steam service when corrosion allows
Key applications
Vacuum distillation vapour boostingEvaporation under vacuumSolvent recovery vacuum trainsChemical process vacuum boostingMulti-effect evaporator support
Working principle
Two-stage steam-jet vacuum boosting
Motive steam expands through the primary booster nozzle and entrains process vapour. That discharge enters an intercondenser (surface or direct-contact / barometric as specified), which condenses steam and condensables so the secondary booster only compresses the remaining non-condensables and vapour. Achievable suction pressure depends on motive steam, cooling-water temperature and load — not a single catalogue millimetre claim.
Entrainment ratio
Rm = Ws / Wm
Ws = suction mass flow; Wm = motive steam mass flow. Stage count and condenser duty are set from this load case.
Operating envelope
Engineering specification matrix
Indicative ranges for RFQ discussion — not guaranteed catalogue limits.
| Design parameter | Standard range | Heavy duty / custom | Compliance |
|---|---|---|---|
| Stages | Two booster / ejector stages | Extra stages or liquid-ring backing when specified | Arrangement on RFQ |
| Intercondenser | Surface or direct-contact between stages | Barometric leg or pumped drain as site layout requires | Condenser type on datasheet |
| Suction duty | Process vacuum boosting from purchaser load | Distillation / evaporation vapour with condensables | Suction P, load & composition on RFQ |
| Motive utility | Steam pressure & temperature per site | Low-pressure steam when available on utility sheet | Utility data on enquiry |
| Materials of construction | Carbon steel · SS 304 / 304L · SS 316 / 316L | Duplex, Monel, Hastelloy or lined parts when named | MOC on purchaser datasheet |
| Mounting | Structural frame or skid as ordered | Interconnecting piping & nozzles per GA | Layout on purchase order |
Fabrication
Built for this product at Vadodara
Booster bodies, intercondensers, interconnecting piping and frames are fabricated at Plot No. 348, GIDC Manjusar-Savli. The product photograph is from our shop floor.
Industries served
Related equipment
FAQ
Technical answers — Double Stage Vacuum Booster
- What is a double stage vacuum booster used for?
- It boosts process vacuum in two steam-jet stages with an intercondenser between them — typical where a single stage cannot hold the required suction pressure or condensable load. Final vacuum depends on steam, cooling water and load data on the RFQ.
- How does this differ from a multi-stage steam jet vacuum system?
- This page is the two-stage booster package. Longer multi-stage trains or hybrid liquid-ring backing are separate product lines when the process case needs them. We confirm stage count from your datasheet.
- Which materials do you use?
- Carbon steel for general service; SS 304 / 304L or SS 316 / 316L when corrosion or process vapour requires it. Nozzles and wetted parts are often upgraded first. Exotic alloys only when named on the enquiry.
- What vacuum will a double-stage booster reach?
- Final absolute pressure depends on motive steam, cooling-water temperature, condensable load and non-condensables. Send those on the RFQ. We do not publish a single catalogue millimetre rating for every unit.
- Do you supply surface or barometric intercondensers?
- Either, when named on the enquiry. Surface condensers need cooling water; barometric / direct-contact condensers need height or a drain pump. Layout decides which fits.
Engineering RFQ
Request an engineering quotation — Double Stage Vacuum Booster
Process parameters below help our engineers qualify the duty before reply. Or email info@ohmengineers.co.in · +91 83470 19128/22
WHAT TO SEND
- Stages: Primary + secondary steam-jet booster
- Intercondenser: Surface or direct-contact / barometric as specified
- Suction duty: Absolute pressure, vapour load and composition per enquiry
- Motive steam: Pressure and temperature from site utility data
- Materials: Carbon steel · SS 304 / 304L · SS 316 / 316L as named on datasheet
- Process datasheet or purchaser drawing if available
- Design code and inspection requirements (ITP)
RESPONSE TIME
We reply by email. If data is incomplete, we list missing fields before commercial offer. Engineering review is not an instant catalogue price.