Regenerative Burners (HRS Burners)
HRS (High Cycle Regenerative Combustion System) burners have achieved outstanding energy savings by means of ultra high pre-heated air combustion and high efficiency waste heat recovery systems. These were realized by use of NFK's patented ceramic honeycomb regenerating media and CEM (Cross Exchange Mechanism), a four-way Switching Device. The HRS-ULN(ultra low NOx) burners based on the latest fuel staging combustion theory have also set a new standard in reducing NOx emissions.
HRS-DL Burner
(HRS Direct Firing Burner)
A simple compact direct firing regenerative burner incorporating NFK's latest high temperature combustion technology. With a built-in ceramic honeycomb regenerator this unit achieves ultra-high efficient heat recovery, drastic reduction of NOx emissions and uniform temperature distribution.
| Applications | Various types of re-heating and heat treatment furnaces, casting and forging furnaces, ceramics firing furnaces and ladle pre-heaters. |
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HRS-DF Burner
(HRS Non-Oxidizing and Reducing Type Burner)
A non-oxidizing and reducing type of regenerative burner which is the practical application of high temperature combustion technology in partial combustion (air ratio<1.0).
The maintenance free design of the honeycomb regenerators minimizes soot particles and is effective for environmental conservation.
| Applications | Reheating furnaces for steel and copper, ceramic calciners. |
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HRS-MD-RT Burner
(HRS Minimized Draft Radiant Tube Type Burner)
A burner with a built-in honeycomb regenerator specially designed for the application of ultra-high pre-heated air combustion technology for heat treatment processes and other purposes in iron and steel manufacturing. Minimum pressure loss and low NOx emission can be achieved simultaneously. Continuous forced cooling of the radiant tube is also possible.
| Applications | Atmospheric furnaces and various types of indirect heating furnaces. |
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HRS-U1 Burner
(HRS Package Type Direct Firing Burner)
A compact direct firing burner with a built-in honeycomb regenerator which incorporates ultra-high pre-heated air combustion technology to achieve minimum pressure loss and low Nox emission simultaneously.The built-in block type honeycomb regenerator allows for easy maintenance and servicing of regenerator media.
| Applications | Heating furnaces, ceramic calciners, steel re-heating furnaces. |
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HRS-UX Burner
(HRS Continuous Fueling/Direct Firing Type Burner)
A continuous fueling, direct firing burner with a built-in honeycomb regenerator which incorporates ultra-high pre-heated air combustion technology to achieve both minimum pressure loss and low NOx emission. The built-in block type honeycomb regenerator allows for easy maintenance and servicing of regenerator media.An additional fuel nozzle for off-gas combustion may also be installed.
| Applications | Hydrogen generators, Indirect type reforming furnaces. |
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A.I./S.I.
(Air/Steam Enthalpy Intensifier)
With this unit, it is possible to continuously generate high temperature air or steam (1,300K-1,500K) with maximum pressure of 10kPa by application of ultra waste heat recovery system utilizing the ceramic honeycomb. This steam enthalpy intensifier is used in the biomass gasification process developed by KTH (Royal Institute of Technology, Sweden) and other gasification processes.
A.I./S.I.
Four Way Valve
(Cross Exchange Mechanism-CEM)
CEM is for The operation of two sets (one pair) of regenerative burners. The four way valve makes possible both air feeding and flue gas exhaust with a single exchange valve. The advantages of CEM in comparison with conventional valve systems (four sets of valves required) are as follows:
- Low cost
- Small size and simple construction
- Simple piping and easy control
- Small leakage ratio (below 5%)
- Natural air cooling
Four Way Valve (CEM)
High Temperature/Pressure Indirect Hot Air Generator
(TN400・TN700)
Developed in collaboration with TOHO Gas Co.,Ltd., this hot air generator can generate hot air or steam at 400℃ or 700℃ by means of a highly efficient regenerative burner for heating and straight through type finned tubes for the heat exchanger. Operation cost is about 1/3 that of conventional electric heating systems.
| Applications | Metal Mold Heating Furnaces, Tempering Furnaces, Paint Baking Driers, Rubber Vulcanizing Furnaces, Solvent Driers. |
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High Temperature/Pressure Indirect Hot Air Generator(TN400・TN700)