REGE-NxT (FF) - Regenerative burners free flame
“REGE Nxt” are regenerative burners thought for intense heat transfer coupled with highest possibile efficiency.
They generate a long flame and are so used in direct heating applications mostly in metallurgy: forge, steel reheating furnaces, aluminium melting and holding furnaces, zinc furnaces, all applications featured by very huge heat demand.
The use of staged & flameless combustion allow for extremely low levels of relative NOx concentration.
They use external heat exchangers filled with ceramic balls, that work as a media during cold air/hot flue gases exchange. The goals is indeed always the use of existing furnace heat to preheat cold combustion heat.
Description
Regenerative burners free flame, champions in efficiency
REGE‑NxT series from ESA‑Pyronics is a family of free flame regenerative gas burners designed for high‑efficiency and intense direct heat transmission in industrial furnaces.
Regeneration is a well known technology: these burners operate in pairs, using alternating suction and exhaust cycles to recover heat from flue gases. Hot fumes from one burner are drawn through a regenerator filled with ceramic media, which stores heat and then transfers it to the combustion air of the partner burner. This regenerative process enables preheated combustion air temperatures up to 1200°C, resulting in significant energy savings—up to 50% compared with conventional ambient‑air burners and up to 30% compared with traditional recuperative systems.
The regenerative burners free flame REGE Nxt support capacities from 300 to 6000 kW, (higher on demand)with flame speeds up to 100 m/s, and are compatible with natural gas, LPG and propane. Typical applications include smelting, forging, heat‑treatment, reheating, and glass furnaces operating at temperatures up to 1400–1500°C. Their construction uses Fe420/AISI304 steel, alumina ceramic beds, high‑temperature refractories, and NOx‑reduction technologies to ensure durability and low emissions. NOx levels vary based on furnace temperature, excess air, ceramic‑bed cycling, and fuel composition, with both flame and flameless options available.
Installation requires careful alignment of burner and regenerator, the use of stainless‑steel compensators in piping, and correct loading of ceramic balls. Each burner includes dedicated cooling air lines for the gas lance, UV sensor and pilot burner. Ignition is via PBC‑FR/X pilot burners with UV‑2 detection.
Proper operation involves correct air/gas pressures, burner‑control devices for low‑temperature applications, and adherence to detailed ignition and adjustment procedures. Maintenance is essential for long‑term efficiency, especially periodic inspection and cleaning of the ceramic bed, UV scanner glass, refractory diffuser, and gaskets. The document also provides full dimensional tables, performance charts, NOx curves, and ordering codes.
Additional information
| Series | |
|---|---|
| Sectors | Aluminum, Heat treatments, Steel |
Related products
- Downloadable files:
- CE Certificate
- EAC Declaration
- Bulletin
