Thermal Oil Heater
Boilers
Thermal Oil Heater
Model: YYW/YWW Series
1. Product Overview
A thermal oil heater is an industrial heating unit that uses thermal oil (organic heat transfer fluid) as the heat transfer medium. The oil is heated by fuel combustion and delivers heat to the heat-consuming equipment in a closed-loop circulation system. Compared with steam heating, a thermal oil heater provides high-temperature process heat (up to 350°C) at atmospheric or low pressure — no high-pressure equipment is required — for safe and reliable operation. The YYW/YWW series features a horizontal helical-coil or fire-tube construction that combines high heat-transfer efficiency with precise temperature control and stable performance, and is widely used in the chemical, petrochemical, textile, building materials, food, and pharmaceutical industries where high-temperature heating is required.
Key Features
Rated thermal power 100–14000 kW
Oil outlet temperature ≤350°C
Thermal efficiency ≥90%
Low pressure, high temperature operation
Precise temp. control ±1°C
Closed-loop circulation, safe & reliable
Fully automatic intelligent control
2. Working Principle
Fuel burns in the combustion chamber producing high-temperature flue gas, which flows along the coil or multi-pass flue, transferring heat to the thermal oil flowing inside the tubes. The heated oil is circulated to the heat-consuming equipment by the circulation pump, where it releases heat before returning to the heater for reheating in a closed loop. The oil outlet temperature is controlled by modulating the burner firing rate. The expansion tank accommodates thermal expansion, and the storage tank is used for system filling and draining. The thermal oil operates in the liquid phase without phase change, resulting in low system pressure and high safety.
3. System Classification
1. By structure: Horizontal coil type (YYW), Horizontal fire-tube type (YWW), Vertical coil type (YYL)
4. Detailed Technical Parameters
4.1 Main Parameters
| Parameter | Unit | YYW-100 | YYW-300 | YYW-500 | YYW-1000 | YYW-2000 | YYW-4000 | YYW-7000 | YYW-14000 |
|---|---|---|---|---|---|---|---|---|---|
| Rated thermal power | kW | 100 | 300 | 500 | 1000 | 2000 | 4000 | 7000 | 14000 |
| Oil outlet temp. | °C | ≤320 | ≤320 | ≤320 | ≤350 | ≤350 | ≤350 | ≤350 | ≤350 |
| Oil inlet temp. | °C | ≤280 | ≤280 | ≤280 | ≤310 | ≤310 | ≤310 | ≤310 | ≤310 |
| Working pressure | MPa | ≤0.8 | ≤0.8 | ≤0.8 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 |
| Thermal efficiency | % | ≥88 | ≥90 | ≥90 | ≥91 | ≥91 | ≥91 | ≥91 | ≥91 |
| Natural gas consumption | Nm³/h | 10 | 30 | 50 | 100 | 200 | 400 | 700 | 1400 |
| Oil circulation flow | m³/h | 8 | 20 | 35 | 60 | 120 | 240 | 400 | 800 |
| Dimensions (L×W×H) | m | 2.5×1.5×2.0 | 3.5×1.8×2.4 | 4.5×2.0×2.6 | 5.5×2.5×3.0 | 7.0×3.0×3.5 | 8.5×3.5×4.0 | 10.0×4.0×4.5 | 13.0×5.0×5.5 |
| Shipping weight | t | 1.5 | 3.0 | 5.0 | 8.5 | 15.0 | 28.0 | 45.0 | 85.0 |
5. Core Component Selection
| Component | Material/Spec | Recommended Brand | Remarks |
|---|---|---|---|
| Heating coil/smoke tubes | 20# boiler steel/12Cr1MoVG | — | High temperature resistant |
| Burner | Gas/oil fired | Weishaupt/Baltur/Riello | Modulating control |
| Circulation oil pump | RY-type thermal oil pump / centrifugal pump | — | High temp. seal |
| Expansion tank | Atmospheric/N2 protected | — | 1.2x system oil volume |
| Storage tank | Atmospheric vessel | — | System fill/drain |
| Control panel | PLC + touch screen | Siemens | PID temp. control |
| Safety valve | Spring type | LESER | 1.1x working pressure |
| Filter | SS filter element | — | 30/60 mesh dual-stage |
6. Typical Application Fields
| Industry | Application | Heating Requirement |
|---|---|---|
| Chemical | Reactor heating, distillation, drying | Oil temp 200–320°C |
| Petrochemical | Pipe heat tracing, tank heating | Oil temp 150–300°C |
| Textile & dyeing | Heat setting, drying | Oil temp 200–280°C |
| Building materials | Press heating, constant mold temperature | Oil temp 180–250°C |
| Food processing | Frying, baking | Oil temp 180–250°C |
| Pharmaceutical | Reaction heating, concentration | Oil temp 150–300°C |
7. Design Standards & Certification
GB/T 17410 — Organic heat carrier heater standard
NB/T 47034 — Industrial boiler technical conditions
TSG 11 — Boiler safety technical regulations
HG/T 2659 — Thermal oil selection standard
ISO 9001 quality management certification
Special equipment manufacturing license
8. Customizable Options
| Option | Description | Remarks |
|---|---|---|
| Waste heat boiler | Flue gas heat recovery for steam | Overall efficiency ≥92% |
| Economizer | Reduce exhaust temperature | Efficiency +3–5% |
| N2 protection system | Expansion tank nitrogen blanketing | Prevent oil oxidation |
| Online oil monitoring | Real-time oil quality monitoring | Extended oil life |
| VFD circulation pump | Load-based flow control | 25% energy savings |
| Remote monitoring | IoT cloud platform | Mobile access |
| Multi-heater cascade | Fleet management | Automatic duty rotation |
| Low NOx burner | Ultra-low emissions | ≤30mg/Nm³ |
9. Warranty Terms
Warranty period: 18 months from shipment or 12 months from commissioning (whichever comes first). Covers material or manufacturing defects. Does not cover thermal oil, seals, refractory materials, or damage from improper operation, substandard oil quality, or non-compliant installation.
Warranty Service Scope
Free replacement of defective parts
Free on-site diagnosis and repair
24/7 phone technical support
Discounted spare parts after warranty
10. Packaging & Delivery
| Item | Packaging | Transport Dims | Gross Weight |
|---|---|---|---|
| Heater main unit | Weatherproof film + steel base | Per model | Unit +5% |
| Burner | Wooden crate | Per spec | Per spec |
| Control panel | Wooden crate + moisture barrier | 1.2×0.8×0.6m | ~60kg |
| Oil pump & valves | Wooden crate | Per spec | Per spec |
| Accessories | Wooden crate | 0.8×0.6×0.5m | ~30kg |
Lead time: 30–60 working days. Delivery terms: FOB/Shanghai. Documents: Certificate of conformity, operation manual, pressure vessel certificate.
11. Information Required for Inquiry
To prepare an accurate quotation, please provide:
| No. | Parameter | Description |
|---|---|---|
| 1 | Rated thermal power | kW or MW |
| 2 | Oil outlet temperature | °C |
| 3 | Oil return temperature | °C |
| 4 | Fuel type | Natural gas/diesel/heavy oil |
| 5 | Fuel calorific value | kcal/Nm³ or kcal/kg |
| 6 | Thermal oil brand & model | — |
| 7 | Oil circulation flow | m³/h |
| 8 | Heat-consuming equipment description | — |
| 9 | Installation environment | Indoor/outdoor |
| 10 | Power supply | V/Hz/phase |
| 11 | Other requirements | Waste heat recovery, N2 blanketing, etc. |