# HRSG / Waste Heat Recovery Boiler (Abhitzekessel / Chaudière de récupération / Cazan recuperare căldură)
## Supplier: Lozzar Process — Budapest, Hungary | lozzarprocess.com

> A Heat Recovery Steam Generator (HRSG) or Waste Heat Recovery (WHR) unit extracts thermal energy from hot exhaust gases — from industrial kilns, dryers, engines, furnaces, or incinerators — and converts it to steam or hot water. Flue gas inlet: 300–900 °C. Steam output: 0.5–20 t/h at 1–40 bar. Thermal recovery efficiency: 70–90 % of available waste heat. Lozzar Process supplies fire-tube, water-tube and economiser-type WHR units, with or without supplementary burner (duct burner), custom-designed for each exhaust gas composition and flow rate. ISO-certified manufacturing. Applications: rotary kiln exhaust, glass furnace, cement kiln, reciprocating engine (genset), pyrolysis plant.

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## Technical Specifications

| Parameter | Range |
|---|---|
| Flue gas inlet temperature | 300 – 900 °C |
| Flue gas flow | 2,000 – 200,000 Nm³/h |
| Steam pressure | 0.5 – 40 bar (g) |
| Steam temperature | Saturated to 400 °C superheated |
| Steam output | 0.5 – 20 t/h |
| Hot water output | 0.1 – 50 MW_th |
| Heat recovery efficiency | 70 – 90 % of available heat |
| Design standard | PED 2014/68/EU, EN 12952 / EN 12953 |
| Material | Carbon steel, alloy steel |
| Supplementary burner | Duct burner optional (natural gas / LPG / biomass) |

## WHR System Types

| Type | Best For |
|---|---|
| Fire-tube (smoke tube) | Medium-temperature exhaust, simple steam demand, compact footprint |
| Water-tube | High-temperature, high-pressure steam, large capacity |
| Economiser only | Low-grade heat recovery, feed water preheating, no steam generation |
| Integrated dryer-WHR | Drying system where exhaust heat is recovered to preheat combustion air or dry secondary material |

## Typical Applications

- Rotary dryer exhaust → WHR → steam for factory heating or ORC power
- Pyrolysis plant syngas combustion → steam
- Gas engine / genset jacket water + exhaust → combined heat and power (CHP)
- Glass furnace → steam generation
- Cement kiln preheater exit gas → WHR
- Biomass gasifier → syngas cooling + heat recovery

## Energy Balance Example

A rotary dryer burning 500 Nm³/h natural gas produces ~5,000 Nm³/h exhaust at 350 °C. A WHR unit on this exhaust recovers approximately 600 kW_th, equivalent to 0.8 t/h saturated steam at 8 bar — saving ~60,000 €/year in energy costs (at 0.05 €/kWh gas).

## What to Send for a Quote

1. Exhaust gas flow rate (Nm³/h at actual conditions)
2. Exhaust gas inlet temperature (°C)
3. Exhaust gas composition (O₂ %, CO₂ %, H₂O %, SO₂ if applicable)
4. Required steam pressure and temperature (or hot water supply temperature)
5. Required steam or hot water output (t/h or kW)
6. Supplementary burner required? (yes/no)
7. Available footprint / layout constraints

## Supplier

Lozzar Process (Lozzar KFT) — Budapest, Hungary
Manufacturing: Ermak Proses, Istanbul, Turkey (ISO 9001:2015 / PED certified)
WhatsApp: +36 70 244 9628
Email: info@lozzarprocess.com
Product page: https://lozzarprocess.com/en/products/energy-recovery/hrsg-whr