Quad-Tower Nitrogen Generator

Our quad-tower system integrates two sets of adsorption vessels into a single unit, replacing the traditional dual-tower setup. This design significantly simplifies the system structure, reduces footprint and installation costs, and greatly minimizes operational and maintenance complexity. The integrated system not only enhances operational efficiency and stability but also eliminates potential issues arising from multi-device coordination, making it a more economical and efficient all-in-one solution.


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Benefits

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Delivers high nitrogen flow rates in a compact structure, ideal for large-scale industrial demand

High Output Capacity
One PLC coordinates four towers, improving efficiency while eliminating multi-unit control complexity

Unified PLC Control
Reduced component s and integrated layout significantly lower maintenance workload and service frequency

Low-Maintenance Operation
Designed for uninterrupted nitrogen production to support high-demand, round-the-clock operations

24/7 Continuous Supply

Product Characteristic

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Premium Carbon Molecular Sieve

Custom-designed carbon molecular sieves with optimized packing density, pore structure, and adsorption efficiency deliver higher nitrogen output per unit volume while significantly extending service life

Reliable Valve System

High-performance pneumatic valves are engineered for frequent switching cycles, ensuring precise and reliable adsorption and regeneration while minimizing internal leakage

Reliable Electrical System

The electrical control system utilizes globally recognized brands such as Schneider and ABB, ensuring reliable power supply and long-term system stability

Application

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Power Plant Purging

Power generation facilities consume large amounts of nitrogen at around 97–99% purity for boiler, turbine, and pipeline purging during start-up and maintenance

Coal Mine Fire Prevention

Coal mines require high-flow nitrogen supply at 95–99% purity for fire suppression and oxygen displacement, especially in longwall and sealed-off areas

Large-Scale Chemical Plants

Chemical plants normally consume 500–3,000 Nm³/h of nitrogen at 97–99.9% purity for reactor purging, tank blanketing, and process inerting to ensure safety and process stability

FAQ

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Can the system operate with fewer towers when demand is low?

Yes. The intelligent multi-tower coordination allows the system to operate on two towers during low-demand conditions, improving energy efficiency and extending component life.
What is the advantage of a quad-tower system?

A quad-tower system replaces two separate twin-tower units with a single integrated solution. One PLC controls all four towers, significantly reducing footprint, manufacturing cost, installation complexity, and long-term maintenance effort.
What is the maximum nitrogen purity achievable?

Depending on system configuration, a standalone nitrogen generator can achieve purity upto 99.999%, and above 99.9999% when combined with a nitrogen purifier.

Technical Specification

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Nitrogen Purity	95~99.999%
Nitrogen Flowrate	1~3000Nm³
Nitrogen Dew Point	-60~-30℃
Nitrogen Pressure	6~8Bar
Air Inlet Pressure	8~10Bar
Air Inlet Temperature	20~35℃
Voltage/Frequency	220v/50~60Hz

Note: Specific requirements can be made upon request

Product Specification

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KNA-SA

Purity: 99%

Model	Air to N₂ Ratio (Nm³)		Inlet & Outlet Dimension（DN）		Air Dryer Model	Unit Structure
Model	Air Consumption	N₂ Output	Inlet	Outlet	Air Dryer Model	Unit Structure
KNA-100SA	225	100	32	25	KRD-070F	Standard
KNA-150SA	337.5	150	40	25	KRD-085F	Standard
KNA-300SA	675	300	50	40	KRD-140F	Standard
KNA-600SA	1350	600	65	50	KRD-250F	Standard
KNA-1000SA	2250	1000	100	65	KRD-420F	Quad-tower
KNA-1500SA	3375	1500	100	65	KRD-750F	Quad-tower

KNA-SA+

Purity: 99.5%

Model	Air to N₂ Ratio (Nm³)		Inlet & Outlet Dimension（DN）		Air Dryer Model	Unit Structure
Model	Air Consumption	N₂ Output	Inlet	Outlet	Air Dryer Model	Unit Structure
KNA-100SA+	270	100	32	25	KRD-070F	Standard
KNA-150SA+	405	150	40	32	KRD-085F	Quad-tower
KNA-300SA+	810	300	50	40	KRD-170F	Quad-tower
KNA-600SA+	1620	600	65	50	KRD-326F	Quad-tower
KNA-1000SA+	2700	1000	100	65	KRD-500F	Quad-tower
KNA-1500SA+	4050	1500	125	65	KRD-800W	Quad-tower

KNA-SB

Purity: 99.9%

Model	Air to N₂ Ratio (Nm³)		Inlet & Outlet Dimension（DN）		Air Dryer Model	Unit Structure
Model	Air Consumption	N₂ Output	Inlet	Outlet	Air Dryer Model	Unit Structure
KNA-60SB	198	60	32	20	KRD-070F	Standard
KNA-100SB	330	100	40	25	KRD-085F	Standard
KNA-150SB	495	150	40	32	KRD-108F	Standard
KNA-300SB	990	300	50	40	KRD-220F	Standard
KNA-600SB	1980	600	80	50	KRD-365F	Quad-tower
KNA-1000SB	3300	1000	100	65	KRD-600F	Quad-tower

KNA-SB+

Purity: 99.95%

Model	Air to N₂ Ratio (Nm³)		Inlet & Outlet Dimension（DN）		Air Dryer Model	Unit Structure
Model	Air Consumption	N₂ Output	Inlet	Outlet	Air Dryer Model	Unit Structure
KNA-60SB+	222	60	25	20	KRD-070F	Standard
KNA-100SB+	370	100	40	25	KRD-085F	Standard
KNA-150SB+	555	150	50	32	KRD-140F	Standard
KNA-300SB+	1110	300	65	40	KRD-220F	Standard
KNA-600SB+	2220	600	80	50	KRD-420F	Quad-tower
KNA-1000SB+	3700	1000	100	65	KRD-650W	Quad-tower

KNA-SC

Purity: 99.99%

Model	Air to N₂ Ratio (Nm³)		Inlet & Outlet Dimension（DN）		Air Dryer Model	Unit Structure
Model	Air Consumption	N₂ Output	Inlet	Outlet	Air Dryer Model	Unit Structure
KNA-60SC	252	60	32	20	KRD-070F	Standard
KNA-100SC	420	100	40	20	KRD-085F	Standard
KNA-150SC	630	150	50	25	KRD-140F	Standard
KNA-200SC	840	200	50	40	KRD-220F	Standard
KNA-300SC	1260	300	65	40	KRD-250F	Quad-tower
KNA-600SC	2520	600	100	50	KRD-460F	Quad-tower

KNA-SC+

Purity: 99.995%

Model	Air to N₂ Ratio (Nm³)		Inlet & Outlet Dimension（DN）		Air Dryer Model	Unit Structure
Model	Air Consumption	N₂ Output	Inlet	Outlet	Air Dryer Model	Unit Structure
KNA-60SC+	276	60	32	20	KRD-070F	Standard
KNA-100SC+	460	100	40	20	KRD-108F	Standard
KNA-200SC+	920	200	50	40	KRD-220F	Standard
KNA-300SC+	1380	300	65	40	KRD-250F	Quad-tower
KNA-500SC+	2300	500	100	50	KRD-420F	Quad-tower
KNA-600SC+	2760	600	100	50	KRD-500F	Quad-tower

KNA-SD

Purity: 99.999%

Model	Air to N₂ Ratio (Nm³)		Inlet & Outlet Dimension（DN）		Air Dryer Model	Unit Structure
Model	Air Consumption	N₂ Output	Inlet	Outlet	Air Dryer Model	Unit Structure
KNA-60SD	312	60	40	20	KRD-070F	Standard
KNA-100SD	520	100	50	20	KRD-108F	Standard
KNA-200SD	1040	200	65	40	KRD-220F	Quad-tower
KNA-300SD	1560	300	65	40	KRD-290F	Quad-tower