The Gas/Oil Fired Thermal Oil Boiler provides stable process heating up to 350°C using liquid-phase heat transfer at operating pressures below 1.0 MPa. Designed for chemical processing, food production, textile, wood, pharmaceutical, asphalt, and other continuous heating applications, it delivers high thermal efficiency with lower operating risks than conventional steam boiler systems.
Main parameters and performance
|
Model |
Rated thermal power |
Maximum operating temperature |
Design pressure |
Thermal efficiency |
Applicable fuel |
|
YQW-700 |
700 kW |
320℃ |
0.8 MPa |
≥92% |
Gas/oil |
|
YQW-1400 |
1400 kW |
320℃ |
0.8 MPa |
≥93% |
Gas/oil |
|
YQW-2100 |
2100 kW |
320℃ |
0.9 MPa |
≥93% |
Gas/oil |
|
YQW-3500 |
3500 kW |
340℃ |
0.9 MPa |
≥94% |
Gas/oil |
|
YQW-7000 |
7000 kW |
350℃ |
1.0 MPa |
≥94% |
Gas/oil |
Core Product Advantages
High-Temperature Heat Transfer at Low Pressure: Uses liquid-phase heat carrier oil to transfer high-temperature energy under minimal system pressure (<1.0 MPa), avoiding pressure-vessel fatigue and high-pressure steam hazards.
Multi-Pass Coiled Tube Structure: Engineered with dense, multi-circuit internal coils that maximize heating surface area, ensure fast oil flow rates, and prevent thermal oil cracking or carbon deposition.
Integrated Tail Economizer Unit: Built-in waste heat recovery exchanger preheats combustion air or system feed oil using exhaust flue gases, raising system thermal efficiency up to 95%.
Low-NOx Flue Gas Recirculation (FGR): Direct integration with premixed FGR burner assemblies controls flame combustion temperatures, keeping exhaust NOx emissions strictly below 30 mg/m³.
System Configuration
Standard System Components:
Pressure Vessel Assembly (Main Boiler Body)
High-Temperature Thermal Oil Circulation Pump Unit
Expansion Tank & Organic Heat Carrier Storage Tank
Oil-Gas Separator Unit
Industrial Burner System (Gas/Liquid Fuel)
Integrated PLC Power & Control Cabinet
Pressure/Temperature Transmitters, Safety Valves & Counter Flanges
Flue Gas Ducting System
Optional Heat Recovery: Tail-End Economizer Unit
Customization Process
|
Item |
Available Options |
|
Heat Capacity |
Customized according to process load |
|
Fuel Type |
Natural Gas, LPG, Diesel, Heavy Oil |
|
Burner Brand |
Baltur, Riello, Weishaupt, Ecoflam or specified brand |
|
Working Voltage |
220V / 380V / 400V / 415V / 440V |
|
Frequency |
50Hz / 60Hz |
|
PLC Brand |
Siemens, Schneider, Delta or customer specified |
|
Heat Recovery |
Optional economizer |
|
Control Mode |
Local control or remote monitoring |
|
Emission Standard |
Configured for local environmental requirements |
Manufacturing & Quality Assurance
Every boiler is manufactured under documented quality procedures before shipment.
Certified Material Inspection
Pressure components are manufactured using qualified boiler steel with complete material traceability.
Weld Quality Verification
Critical pressure welds undergo radiographic or ultrasonic inspection to verify structural integrity.
Pressure Testing
Each boiler is hydrostatically tested above its design pressure before factory acceptance.
Control System Verification
Safety interlocks, burner sequencing, alarms, and automatic shutdown functions are tested prior to delivery.
Packaging & Global Logistics
Heavy Boiler Body: Secured within reinforced steel framing for direct crane lifting and bulk shipment.
Electrical & Sensitive Components: Sealed inside export-grade wooden cases with moisture-proof protection.
Piping & Valves: Bound and wrapped with industrial protective coatings.
Documentation Included: General arrangement drawings, electrical schematics, operating manuals, and factory test reports.
FAQ
Q: How do I determine the right thermal oil boiler capacity?
A: Capacity depends on your required process temperature, hourly heat demand, heating equipment, and production cycle. Providing these parameters allows engineers to calculate the appropriate boiler output and circulation system.
Q: What industries are thermal oil boilers most suitable for?
A: They are commonly used where continuous heating above 200°C is required, including chemical processing, food manufacturing, textile finishing, wood processing, pharmaceuticals, asphalt plants, and plastics production.
Q: Can one thermal oil boiler supply multiple production lines?
A: Yes. A properly designed circulation system can distribute heat to multiple users simultaneously, with independent temperature control available for different production zones.
Q: How often does thermal oil need to be replaced?
A: Thermal oil service life depends on operating temperature, oil quality, and system maintenance. Under proper operating conditions and regular oil analysis, many systems can operate for several years before replacement is required.
Q: What factors affect fuel consumption?
A: Fuel consumption is influenced by boiler capacity, operating temperature, insulation quality, burner efficiency, production load, and whether an economizer is installed for waste heat recovery.
Q: What maintenance is required during normal operation?
A: Routine maintenance typically includes burner servicing, filter cleaning, circulation pump inspection, expansion tank checks, safety device verification, and periodic thermal oil sampling to monitor oil condition.
Q: Can existing steam heating systems be converted to thermal oil?
A: In many cases, yes. However, compatibility depends on the process equipment, required temperatures, heat exchangers, and existing piping layout. An engineering evaluation is recommended before conversion.
Q: What should I prepare before installation?
A: Typical site requirements include a concrete foundation, fuel supply, electrical connection, chimney system, circulation piping, and sufficient maintenance space around the boiler. Layout drawings are provided before shipment.
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