Welcome to Guangdong Hause Thermal Technology Co.,Ltd.
Q Series Fully Premixed Once-through Ultra-low NOx Steam Boiler
- High Safety - Multi-Protection System
- Constant Steam- Consistent Pressure, Temperature & Dryness
- Ultra-Low NOx Emissions - <30mg/m³
- Exceptional Thermal Efficiency - Up to 100.69%
- Water-Cooled Wall Protection - Prevents Overheating
- Rapid Steam Generation - Ready in Just 2 Minutes
- Optimized Flue Gas System - Reduced Exhaust Temperature (<60°C)
- Flue Gas Condensation & Feedwater Preheating - Maximizes Heat Recovery
Q Series Fully Premixed Once-through Ultra-low NOx Steam Boiler
Premix Flow-through Steam Boiler with <30mg NOx
Power Options: 0.5 ton / 1 ton
Technological Advantages
(1) Multi-level Safety Protection
*Integrated Circuit - Multi-protection System
*Water Level Probes - Real-time Detection (Prevents dry-running)
*Ionization Flame Monitoring - Continuous Combustion Supervision
*Pressure Protection - Real-time Monitoring
*Flue Gas Temperature Protection - Mechanical Cut-off
*Mechanical Pressure Control - Overpressure Protection
(2) High-Efficiency Condensing Technology
Flue Gas Temperature as Low as 40-60°C (PVC pipes replace steel chimneys)
(3) Steam-Water Separation Technology
Steam Dryness Up to 99%
(4) Low-NOx Combustion Technology
Variable Frequency Combustion + Pressure Tracking for low NOx emissions and stable steam pressure output.
(5) Energy & Gas Savings
①10% Lower Flue Gas Temperature
Traditional boiler (8h/day full load @ 74.06 Nm³/h): 592 m³/day
Annual cost (@ 0.4 USD/m³, 330 workdays): 78,144 USD/year
10% Savings = 7,814.4 USD/year
②3% Savings from Constant Pressure Output
Unlike traditional 3-stage boilers, inverter modulation avoids frequent starts/stops.
3% Savings = 2,344.3 USD/year
③30-Minute Faster Pressure Rise
Saves 37 m³ gas/day → 4,884 USD/year
Total Annual Savings (1-ton unit): 15,042.7 USD
(Gas prices vary by market; calculations based on estimated operating hours.)
Performance Comparison
Model | Fully Premixed Once-through Ultra-low NOx Steam Boiler | Traditional Boiler |
Water Volume | 30L (Non-inspected) | Pressure Vessel |
Heat Loss | 0.5%-1% | 2%-5% |
Flue Gas Temperature | <60°C | >120°C |
Steam Generation Time | 2 minutes | 30 minutes |
Burner Control | 20%-100% gas modulation | 3-stage firing |
Start/Stop Frequency | 50%+ reduction | High |
Footprint | <3 m² | >12 m² |
Technical Data
Modle | LL9GKQ350-Q | LL9GKQ700-Q | |
Boiler Body Parts | Boiler Material | Composite boiler steel + 316L stainless steel (finned) | |
Condenser Material | 316L stainless steel | ||
Rated Pressure | 1.0MPA(Above 1.0MPA can be customized) | ||
Boiler Thermal Efficiency | 100.69% | ||
Consumption (Natural Gas) | 37.03Nm³/h | 74.06Nm³/h | |
Exhaust Smoke Temperature | <60℃(Condenser optional) | ||
Body Weight | 1000kg | 1800kg | |
Boiler Body Welding Method | Full argon arc | ||
Gas Valve Group Diameter | DN32 | DN40 | |
Steam Outlet | DN32 | DN40 | |
Safety Valve | DN32 | DN40 | |
Water Inlet | DN32 | DN40 | |
Outfall | DN32 | DN40 | |
Condenser Circulation Tube | DN15 | DN15 | |
Combustion Parts | Chimney Diameter | Φ160 | Φ219 |
Temperature Sensor | PT100 | ||
Combustion Adjustment Method | 20-100 Proportional Adjustment | ||
Burner Brand | Honeywell (Fully Premixed) | ||
NOx | <30mg/m³ | ||
Gas Pressure (Dynamic Pressure kpa) | 3～8kpa | ||
Ignition Method | Automatic Electronic Ignition / Two Stage Pre-ignition | ||
Main Controller | PLD-Touch | ||
Control Cabinet Type | Embedded | ||
Control Method | Program Control + Intelligent Internet of Things | ||
Protection Configuration | Protective Function | Low water level protection, Over temperature protection, Over pressure protection, | |
Rated Power | <2KW | <3KW | |
Power | Three-phase Four-wire 50Hz | ||
Product Dimension (LxWxH) | 2130*1500*2000 | 2130*1500*2300 | |
