Revotech
Non-IBR, four-pass, fully automatic coil-type steam boiler with the Reverse Flue combustion principle.
Built for the plant floor
- Four-pass design with economizer
- Reverse flue design
- Packaged unit
- High combustion efficiency
- Easy conversion to different liquid and gaseous fuels
- Easy access for inspection and cleaning
- High operating efficiency
- Fully automatic unit
- Low system lag and rapid warm up response
- Insulated boiler body to minimize radiation losses
- Outside the purview of IBR
- Can attain pressure upto 15kg/cm²
- Fail-safe design, dependable safety instruments
- Instant steaming
- Explosion possibilities are nil
- Qualified attendant not required
Operating principle
Revotech is the latest design in coil-type non-IBR boilers. It uses a revolutionary combustion principle known as Reverse Flue, which increases combustion efficiency and allows a high rate of heat flux, in a four-pass design. Preheated air is used to establish combustion. Two passes are completed in the radiant zone within the coil; the third pass, between coil and shell, is convective; the fourth runs through an Efficiency Module — an atmospheric economiser that preheats incoming feed water. A heat optimiser keeps the feed water at the correct temperature for the pump.
Non-IBR
The volumetric holding of the steam-generating coil is less than 25 litres, so the boiler is exempted from the Indian Boiler Regulations (IBR).
Packaged, unitised design
Supplied as a packaged unit — main boiler with atmospheric economiser, fully automatic combustion system, boiler feed pump and control panel on one base frame. Erection time is minimal: only water, power, steam and chimney connections are needed.
Fully automatic, instant steaming
Revotech switches ON and OFF automatically against the steam pressure set on the pressure switch, so it doesn't need a specially trained attendant watching it continuously. Forced circulation, water-tube construction and the reverse-flue design bring the boiler to full working pressure within 3 to 5 minutes from cold.
Record efficiency
The reverse-flue design, efficiency module, integral air preheater and economiser together give an overall thermal efficiency of 88 % on NCV of oil.
Applications
Technical specification — Revotech (oil fired)
| Parameter | RT-03 | RT-04 | RT-05 | RT-06 | RT-08 | RT-085 | RT-10 |
|---|---|---|---|---|---|---|---|
| Steam output (F&A 100 °C)kg/hr | 300 | 400 | 500 | 600 | 800 | 850 | 1000 |
| Steam pressurekg/cm² | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Fuel consumption — LDOkg/hr | 18 | 24 | 30 | 36 | 48 | 51 | 60 |
| Fuel consumption — FOkg/hr | 19.1 | 25.4 | 31.8 | 38.1 | 50.8 | 54 | 63.6 |
| Efficiency (NCV)% | 88 ± 2 | 88 ± 2 | 88 ± 2 | 88 ± 2 | 88 ± 2 | 88 ± 2 | 88 ± 2 |
| Start-upminutes | 3 | 3 | 5 | 5 | 5 | 5 | 5 |
| Burner control | On / Off | ||||||
| Pressure parts | Outside the purview of IBR | ||||||
| Electric supply | AC 3 phase 415 V ± 6%, 50 Hz ± 3%, 4 wire system | ||||||
| Feed water pump motorhp | 1 | 1 | 1 | 1 | 1.5 | 1.5 | 1.5 |
| Blower motorhp | 1 | 1 | 1.5 | 1.5 | 3 | 3 | 5 |
| Fuel pump motorhp | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Fuel oil preheater (FO units only)kW | 3 | 4.5 | 6 | 6 | 7.5 | 7.5 | 7.5 |
| Total electric load — LDO fired | 2.5 hp | 2.5 hp | 3 hp | 3 hp | 5 hp | 5 hp | 7 hp |
| Total electric load — FO fired | 2.5 hp + 3 kW | 2.5 hp + 4.5 kW | 3 hp + 6 kW | 3 hp + 6 kW | 5 hp + 7.5 kW | 5 hp + 7.5 kW | 7 hp + 7.5 kW |
| Flue gas outletmm | 200 | 200 | 200 | 250 | 300 | 300 | 300 |
| Dry weightkg | 1300 | 1400 | 1600 | 1700 | 1800 | 1900 | 1950 |
• NCV of HSD: 10,400 kcal/kg · NCV of LDO: 10,200 kcal/kg · NCV of FO: 9,600 kcal/kg.
• Designs and specifications are subject to change due to constant research & development.
What comes with every unit
The standard supply package, the controls and safeties fitted as standard, and what we need at site, as listed in Neotech's scope of supply.
Boiler: standard scope
- Pressure part assembly: closely wound helical vertical coil fabricated from boiler quality pipes, with specially designed spacers.
- Down-firing, pressure jet burner assembly.
- Double-jacketed air casing enclosing the pressure parts, serving as an integral combustion air pre-heater with specially designed aluminium radiator to minimise radiation losses and maximise efficiency.
- Specially designed shell & tube type atmospheric economiser at the flue gas outlet to preserve heat and optimise boiler efficiency.
Accessories
- Centrifugal blower with motor, mounted on a special frame.
- Fuel pump coupled with motor, mounted on a special frame with guard.
- Boiler feed pump with surge suppressor and relief valve, motor-driven, mounted on the same frame.
- Dust-proof, pre-wired control panel housing starters, MCBs, contactors, relays, and associated components.
Piping
- Feed water line between economiser, optimiser, feed pump, and boiler.
- Fuel oil line from filter to burner inlet.
- Steam header with feed check valve.
Mountings & fittings
- Main steam stop valve.
- Auxiliary steam bypass valve.
- Single-port spring-loaded safety valve.
- Blow-down valve.
- Drain valve for economiser.
- Non-return valve on feed water line.
- Solenoid valve on fuel oil inlet to burner.
- Three isolating needle valves for indicating instruments.
- Simplex oil filter.
- Simplex water filter.
Instruments, controls & safeties
- Steam pressure indicator.
- Digital electronic steam temperature indicator-cum-controller.
- Steam pressure switch for ON/OFF combustion control.
- Fuel oil pressure indicator.
- Feed water temperature indicator.
- Feed water pressure indicator.
- Low-level control.
- Flame failure device (part of sequence controller).
- Audio-visual alarm for abnormal conditions.
- Limit switch on blow-down line.
- Explosion door.
Battery limits
Steam
- Main steam stop valve
- Auxiliary steam bypass valve
- Safety valve on steam outlet line
Water
- Inlet of heat optimiser
- Blow-down valve outlet
- Drain connection for water pump relief valve
- Air vent connection for economiser
Fuel Oil
- Inlet of fuel oil filter
Air & Flue Gas
- Suction of blower
- Flue gas outlet on economiser
Electricals
- Terminal connectors on control panel
Site requirements
Performance criteria
Fuel — Light Diesel Oil (LDO) / High Speed Diesel (HSD)
| Filtration | 120 Mesh — free of water and sediment |
|---|---|
| Net Calorific Value (NCV) | 10,200 Kcal/kg |
| Viscosity @ 37.8°C | As per IS specification |
Fuel — Furnace Oil (FO)
| Viscosity (max) | 390 cSt @ 50°C |
|---|---|
| Net Calorific Value (NCV) | 11.24 kWh/kg |
| Density @ 15°C | 0.91 kg/Litre |
| Condition | Free of water & sediment — filtered through 150 mesh |
Feed Water Quality
| Hardness | < 5 ppm |
|---|---|
| Dissolved O₂ | Nil |
| pH Value | 8.5 – 9.5 |
| Free CO₂ | Nil |
| Bound CO₂ | < 5 ppm |
| TDS | 400 ppm max. |
| Temperature | 30°C max. |
| Condition | Filtered, free from sediment and turbidity |
Electrical Power Supply
| Voltage | 415 V ± 6% |
|---|---|
| Frequency | 50 Hz ± 3% |
| Phases | Three-phase + Neutral |
| Earthing | Yes — double earthing required |
Boiler: standard scope
- Pressure part assembly: closely wound helical vertical coil fabricated from boiler quality pipes, with specially designed spacers.
- Down-firing, pressure jet burner assembly.
- Double-jacketed air casing enclosing the pressure parts, serving as an integral combustion air pre-heater with specially designed aluminum radiator to minimise radiation losses and maximise efficiency.
- Specially designed shell & tube type atmospheric economizer at the flue gas outlet to preserve heat and optimize boiler efficiency.
Accessories
- Centrifugal blower with motor, mounted on a special frame.
- Fuel pump coupled with motor, mounted on a special frame with guard.
- Boiler feed pump with surge suppressor and relief valve, motor-driven, mounted on the same frame.
- Electrically heated fuel oil preheater mounted on frame.
- Dust-proof, pre-wired control panel housing starters, MCBs, contactors, relays, and associated components.
Piping
- Feed water line between economiser, optimiser, feed pump, and boiler.
- Fuel oil line from filter to burner inlet.
- Steam header with feed check valve.
Mountings & fittings
- Main steam stop valve.
- Auxiliary steam bypass valve.
- Single-port spring-loaded safety valve.
- Blow-down valve.
- Drain valve for economizer.
- Relief valve on OPH tank.
- Non-return valve on feed water line.
- Solenoid valve on fuel oil inlet to burner.
- Three isolating needle valves for indicating instruments.
- Simplex oil filter.
- Simplex water filter.
Instruments, controls & safeties
- Steam pressure indicator.
- Digital electronic steam temperature indicator-cum-controller.
- Steam pressure switch for ON/OFF combustion control.
- Fuel oil pressure indicator.
- Feed water temperature indicator.
- Feed water pressure indicator.
- Low-level control.
- Flame failure device (part of sequence controller).
- Audio-visual alarm for abnormal conditions.
- Limit switch on blow-down line.
- Explosion door.
Battery limits
Steam
- Main steam stop valve
- Auxiliary steam bypass valve
- Safety valve on steam outlet line
Water
- Inlet of heat optimiser
- Blow-down valve outlet
- Drain connection for water pump relief valve
- Air vent connection for economizer
Fuel Oil
- Inlet of fuel oil filter
Air & Flue Gas
- Suction of blower
- Flue gas outlet on economizer
Electricals
- Terminal connectors on control panel
Site requirements
Performance criteria
Fuel — Light Diesel Oil (LDO) / High Speed Diesel (HSD)
| Filtration | 120 Mesh — free of water and sediment |
|---|---|
| Net Calorific Value (NCV) | 10,200 Kcal/kg |
| Viscosity @ 37.8°C | As per IS specification |
Fuel — Furnace Oil (FO)
| Viscosity (max) | 390 cSt @ 50°C |
|---|---|
| Net Calorific Value (NCV) | 11.24 kWh/kg |
| Density @ 15°C | 0.91 kg/Litre |
| Condition | Free of water & sediment — filtered through 150 mesh |
Feed Water Quality
| Hardness | < 5 ppm |
|---|---|
| Dissolved O₂ | Nil |
| pH Value | 8.5 – 9.5 |
| Free CO₂ | Nil |
| Bound CO₂ | < 5 ppm |
| TDS | 400 ppm max. |
| Temperature | 30°C max. |
| Condition | Filtered, free from sediment and turbidity |
Electrical Power Supply
| Voltage | 415 V ± 6% |
|---|---|
| Frequency | 50 Hz ± 3% |
| Phases | Three-phase + Neutral |
| Earthing | Yes — double earthing required |
Get a quotation for Revotech
Tell us the duty, the fuel available and your location. An engineer will call back with a selection and a price, usually within one working day.
- Office: +91 22 2859 0678
- Factory: +91 98210 28660
- sales@neotechboilers.com
You may also need
Revotech-G
Gas Fired Steam Boiler
Packaged non-IBR four-pass steam boiler with an imported, fully automatic gas burner — efficiency in the vicinity of 90 %.
Minimatic
Mini Steam Boiler
Compact three-pass mini steam boiler with imported monoblock burners — ideal for replacing electrically heated steam boilers.
Neotherm
Oil Fired Thermic Fluid Heater
Vertical, fully automatic thermic fluid heater with four heat-transfer passes — 300 °C at the outlet, 88 % efficiency.