Technodry Block
Fully automatic hot air generators delivering clean, uncontaminated hot air for process drying — indirect to 300 °C, direct to 800 °C.

Built for the plant floor
- Fully automatic
- Easy operation
- Packaged models
- Record efficiency
- Failsafe system
- Compact in design
- Caters to the hot air needs of any dryer
- Larger production at economical drying cost
Clean hot air for drying
Neotech's hot air generators deliver clean, uncontaminated hot air for process drying. They are fully automatic with a failsafe system, and are available from 30,000 kcal/hr to 10 lakh kcal/hr.
Indirect and direct
There are two types. Indirect systems deliver hot air at up to 300 °C; direct systems deliver it at up to 800 °C. Fuel choices are LDO, furnace oil, natural gas and LPG.
Options
Models for higher temperatures (up to 400 °C) are available, as are units with stepless modulating burners. Gas-fired units need 100 mbar gas pressure at the burner inlet.
Applications
Technical specification — Technodry Block (TDB I & TDB G)
| Parameter | TDB 50 | TDB 100 | TDB 150 | TDB 200 | TDB 300 | TDB 400 | TDB 500 | TDB 600 |
|---|---|---|---|---|---|---|---|---|
| Capacitykcal/hr | 50,000 | 1,00,000 | 1,50,000 | 2,00,000 | 3,00,000 | 4,00,000 | 5,00,000 | 6,00,000 |
| Temperature°C | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 150 |
| Fuel consumption — LDO / HSDkg/hr | 5.75 | 11.5 | 18 | 23 | 34.5 | 46 | 60 | 72 |
| Fuel consumption — LPGkg/hr | 5 | 10 | 15 | 20 | 30 | 40 | 50 | 60 |
| Fuel consumption — NGNm³/hr | 6.5 | 13 | 19.5 | 26 | 39 | 52 | 65 | 78 |
| Flue outletmm | 150 | 200 | 250 | 250 | 250 | 300 | 300 | 300 |
| Electric supply | AC 3 phase 415 V ± 6%, 50 Hz ± 3%, 4 wire system | |||||||
| Efficiency | 88 % ± 2 % | |||||||
| Burner control | On-Off / High-Low | |||||||
| Air volume | As per requirement | |||||||
• Gas-fired units: gas pressure required at burner inlet — 100 mbar.
• Higher temperature models up to 400 °C available. Units with stepless modulating burners also offered.
• NCV of LPG: 11,500 kcal/kg · NG: 8,600 kcal/Nm³ · oil: 10,200 kcal/kg.
Get a quotation for Technodry Block
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

Technodry Block SF
Solid Fuel Fired Hot Air Generator
Indirect, fully automatic hot air generator firing wood, coal or agro-briquettes — clean hot air up to 200 °C.

Neotherm
Oil Fired Thermic Fluid Heater
Vertical, fully automatic thermic fluid heater with four heat-transfer passes — 300 °C at the outlet, 88 % efficiency.

Burner Conversions & Spares
Riello authorised representative since 2001
Convert existing boilers, heaters, ovens and dryers to cheaper, cleaner fuels — with Riello burners, Neotech engineering and genuine spares.