China Direct Manufacturer • Organic Heat Carrier Systems

Gas / Oil Thermal Oil Boiler (YYW / YQL 0.35 - 14 MW)

High Temperature up to 350°C • Low Operating Pressure (<0.8 MPa) • ±1°C Precision Control • ASME, CE-PED & EAC Certified

ASME 'S' & 'U' CE-PED 2014/68/EU EAC TR CU 032 Explosion-Proof Safety
Gas Oil Thermal Oil Boiler Heater YYW Series

350°C High Temperature Heating Without High-Pressure Steam Hazards

The EPCB YYW (horizontal) and YQL (vertical) series thermal oil boilers utilize mineral or synthetic organic heat transfer fluid circulating in a closed-loop liquid phase. Because thermal oil has a high atmospheric boiling point, these systems safely achieve extreme heating temperatures up to 320°C–350°C at minimal operating pressure (<0.8 MPa), completely eliminating water scaling, corrosion, freezing risks, and high-pressure steam explosion hazards.

Precision PID Temperature Control: Delivers continuous liquid temperature stability within ±1°C for sensitive chemical synthesis.
Zero Water Scaling & Corrosion: Closed-loop circulation requires no water treatment chemicals or continuous blowdown.
Multi-Pass Finned Tube Coils: Multi-layer closely-spaced steel coils maximize radiant absorption with zero thermal stress cracking.
100% Pre-Engineered Skid: Thermal oil circulation pump, nitrogen blanket system, expansion tank & oil storage tank supplied.

Thermal Oil vs. Steam Boiler Feasibility

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Comprehensive Engineering Specifications

YYW / YQL Thermal Oil Heater Technical Parameters

Designed to ASME Section I / DIN 4754 / GB/T 17410 standards for high-temperature organic heat carrier systems.

Parameter Category Engineering Standard & Configuration Remarks & Compliance
Thermal Power Range 350 kW - 14,000 kW (300,000 - 12,000,000 kcal/h) Horizontal (YYW) and Vertical (YQL) configurations
Operating Temperature Liquid phase ≤ 320°C (Mineral oil) • ≤ 350°C (Synthetic oil) High temperature under near atmospheric pressure
Operating System Pressure ≤ 0.8 MPa (8 bar circulation pressure) Hydrostatically tested to 1.5× design pressure
Temperature Control Accuracy ± 1 °C Intelligent PID modulating valve and burner feedback
Thermal Efficiency 92% ~ 95% Equipped with air preheater or waste heat economizer
Circulation Pump Brand High-temperature centrifugal canned motor pump or mechanical seal pump 1 Duty + 1 Standby automatic switchover
Burner & Combustion System Baltur / Riello modulating low-NOx gas/oil burner Precision flame length matched to furnace tube pitch
Safety Interlock Protocols Differential pressure alarm, over-temperature trip, low oil level cut-off Complies with DIN 4754 thermal fluid safety rules

YYW Standard Model Range & Capacity Sizing Chart

Standard model capacities, gas/diesel consumption rates, and pipe sizes.

Standard Model Thermal Power (kW) Heat Output (10⁴ kcal/h) Nat. Gas (Nm³/h) Diesel (kg/h) Circulation Pipe Inquiry
YYW-350Y(Q) 350 kW 30 38 ~ 40 31 ~ 33 DN50 Quote →
YYW-700Y(Q) 700 kW 60 76 ~ 80 62 ~ 65 DN65 Quote →
YYW-1400Y(Q) 1,400 kW 120 152 ~ 160 124 ~ 130 DN80 Quote →
YYW-2800Y(Q) 2,800 kW 240 304 ~ 320 248 ~ 260 DN100 Quote →
YYW-4200Y(Q) 4,200 kW 360 456 ~ 480 372 ~ 390 DN125 Quote →
YYW-7000Y(Q) 7,000 kW 600 760 ~ 800 620 ~ 650 DN150 Quote →

Complete Thermal Oil System Scope of Supply

Fully integrated organic heat carrier skids engineered for seamless plant commissioning.

Boiler Coil Body 3-Pass Seamless Coil
Circulation Pumps Dual High-Temp 350°C
Expansion Tank High-Level Buffer
Oil Storage Tank Low-Level Sump Tank
PLC Control Cabinet Siemens Smart Touch
Oil Degasser & Filter Y-Strainer + Gas Venter

Advanced Product Features

Precise PID Control

Advanced temperature regulation system ensuring stable output within a 1-degree margin.

Safe Low Pressure

Achieve high temperatures without the hazards of high-pressure steam systems.

High Thermal Efficiency

Optimized flow design and combustion chamber for maximum heat transfer.

Compact Coil Structure

Double-coil or triple-coil designs for increased heating surface area.

Multi-layer Insulation

High-density rock wool insulation reduces surface heat loss to a minimum.

Explosion-proof Door

Built-in safety relief door to protect the boiler body from sudden pressure surges.

Industry Applications

Asphalt Heating
Chemical Reactors
Wood Drying
Textile Setting
Food Frying