Thermal Oil Boiler | 320℃ High And Stable Heat Supply

  • Thermal Fluid Heating System 320~350℃
  • Very Stable Heat Source
  • Supply coal, biomass, Natural gas, Oil and etc.
Thermal Oil Boiler Manufacturers In China - Top 3 Supplier

High Quality & Good Price Hot Oil Boiler

Yongxing all thermal oil boilers use professional tools to compact the coil pipes, and install as many circulating oil pipes as possible in a limited space.To improve oil recycle volume.
You can find the thermic oil boiler key characteristic is that the bottom uses a chain grate as the combustion base, and the upper body is a vertical coil pipe similar to an oil and gas boiler.
For larger power, our YLW horizontal coal fired thermal oil boiler is the most suitable. it is designed with a large number of coils inside, which can provide you most stable heat energy.
The main component of the fuel gas heat conduction oil furnace is the coil. According to the latest design, we use 3 coil pipes to make the thermic oil boiler small in volume and large in capacity.
Yongxing YYQW thermal oil furnace will be installed as a skid-mounted system and equipped with a complete boiler system. The max working temperature can reach to 320℃.
7MW thermic oil boiler has high requirements for factory skills and workers. Fortunately, Yongxing has advanced production experience, allowing you to buy boiler with big confidence.

Our Thermal Fluid Heater Certifications

  • Certificate
  • Biomass Steam Boiler Certificate 2
  • Biomass Steam Boiler Certificate 3
  • Biomass Steam Boiler Certificate 4

Yongxing Hot Oil Boiler Manufacturer Reliable Quality

Yongxing is one of the top 3 thermal oil boiler manufacturers in China. It is possible to use biomass, bituminous coal, and gas (oil) as fuel sources.

It is a high-efficiency thermal oil boiler and steam boiler generator with low pressure but high-temperature working characteristics. The heating temperature can reach 340℃ in the liquid phase or 400℃ in the vapor phase.

A uniform and stable heat source is required, and direct flame heating cannot be used. The process’s final heating temperature is between 150°C and 350°C, We guarantee that our thermal oil boiler can perfectly meet your various production situations.

We can divide our thermal oil boilers into two categories according to their fuel type. The first is a coal or biomass thermal oil boiler, and the second is a light oil or natural gas thermal oil boiler.

Yongxing thermal oil boiler working principle uses coal, biomass, oil, gas, etc., as heat sources or fuels to provide heat sources for the entire thermal oil boiler system.

By using Yongxing’s thermal oil boiler YD-340 as the medium, your thermal fluid heating system will be able to reach temperatures of 320°C*350°C.

At the same time, our thermic oil boiler uses a high-temperature circulating oil pump to forcefully circulate the heat transfer oil in the furnace, which can transfer heat to your different heating equipment through pipelines. After the heat transfer oil is complete, it will return to the thermal oil boiler for secondary heating and work.

Our thermal oil boiler is an energy-saving, high-temperature, low-pressure appliance that can provide stable thermal energy and constant pressure for your system.

Yongxing divides the coal-fired thermal oil boiler into a vertical thermal oil boiler and a horizontal thermal oil boiler. A vertical oil boiler’s heating range is 120KW-1000KW, and a horizontal oil boiler’s range is 1400KW-7000KW.

Awaiting your inquiry for any models needed!

Yongxing Thermal Oil Boiler Reliable Quality
Yongxing Thermal Oil Boiler Reliable Quality
Yongxing Thermal Oil Boiler Reliable Quality
Welcome to visit our factory and check Thermal Oil Boiler
  • Yongxing welcome your visit anytime.
  • Yongxing is near Zhengzhou airport, we will take you by car from there.
  • We will guide your whole journey for Thermal Oil Boiler.
  • We could take you to check nearby running Thermic Fluid Oil Boiler.

Yongxing Thermal Oil Boiler Quality Control

Boiler Pipes
Coil Pipes


Thermal Oil Boiler Definitive Guide FAQ

What Is Your Thermal Oil Boiler?

A thermal oil boiler produces heat energy by firing with the vertical or horizontal helical coil. This is accomplished by warming the coil via conduction and radiation. Thermal oil is used to heat cylinders in numerous thermal heat sources.

Apart from the steam boiler or hot water boiler, this kind of heating doesn’t exert tremendous pressure on the system.

thermal oil heater coils

A distinguishing feature of thermal oil installations is the expansion reservoir. Its purpose is to absorb any expansion of thermal oil from the oil pump. Furthermore, it serves to store thermal oil all through possible installation shutdowns.

However, thermal oil pumps move the fluid throughout the system. it must be checked at proper intervals to avoid any kind of mishaps.

What Is Thermic Fluid Oil Boiler Used For?

Thermal oil systems can be used with bituminous goods such as coating materials for constructing materials/coatings and road building to keep the hot road blend flowable.

Generally, the heat for this system ranges between 170 and 200 degrees centigrade. The composed heat is transferred to the thermal oil that will compensate for the consumer’s needs through a circulation pump.

These circulation pumps need maintenance and cleaning frequently because these oils have deterioration.

thermal fluid heater

What Types Of Thermic Oil Boiler Do You Have?

We Mainly have 3 different models:

It adopts a three-pass coil design and a fixed-grate at the bottom. Its heating surface makes by China’s A-level 20 (GB3087-2008) seamless steel pipe.

The superb welding process can ensure that the thermal fluid heating system you buy has an accurate temperature supply. 

The advantages of Yongxing Vertical thermal oil boiler are as follows:

1) The heating surface of Yongxing’s vertical coal-fired thermal oil boiler adopts circular coils. Our workers use professional tools to make the circular coils tightly. It ensures that the thermal oil boiler system is adequately arranged.

Simultaneously, it can also reduce the heat load on the tube surface. Make your thermal fluid heating system the highest thermal efficiency.

2) Our combustion chamber is designed for adiabatic combustion, making it easier and more sufficient for your fuel to catch fire. If you buy our vertical coal-fired heat-conducting oil boiler, you will significantly save space and fuel

3) To ensure your thermal oil boiler’s quality, we have designed an excellent heat transfer oil process. The heat transfer oil flows from the flow inlet to the high outlet to quickly discharge the gas generated during the thermal fluid heating system’s operation.

New design to protect the boiler top, even your boiler runs a long time, the thermal oil boiler top will not burn out.

4) Yongxing vertical thermal oil boiler occupies a small area because of its compact design. The integrated or skid-mounted design makes your installation convenient and short installation without foundation.

vertical thermal oil boiler


Our horizontal thermal fluid boiler is mainly used in higher power models.

YLW series organic heat carrier furnace is an assembled forced circulation chain grate boiler. The upper part of the thermal oil heater boiler is the boiler body, including the chassis, steel frame, square coil, shed tube, space elbow, serpentine tube bundle, and various headers.

YLW thermal oil boiler

The lower part uses high-silicon heat-resistant chain grate or uses a reciprocating grate as combustion support. At the tail, an air preheater is set up, which can heat the air required for the thermic oil boiler combustion. 

YGW hand-feeding thermal oil boiler

It can effectively improve thermal efficiency. Yongxing thermal oil boiler inside is a furnace wall made of refractory bricks and refractory concrete and front and rear arches; Our thermal oil boiler outside is a steel frame, and a skin board in the middle is an insulation material.

thermal oil boiler

YLL vertical drum chain grate travelling grate stoker

The horizontal coal-fired thermal oil boiler system has many advantages:

1) Because your boiler body is all completed in the factory, as long as the upper body and the lower boiler are closed, your installation cycle is concise.

2) Unlike the vertical thermal oil heating system, the furnace of Yongxing horizontal thermal oil boiler adopts double-closed coils, which have a sufficient heating surface. It can also help users reduce the heat load on the pipe’s body, and the use of heat transfer oil is safer.

3) Our furnace arch design is significantly increased, the residence time of flue gas in the furnace is extended, making your fuel combustion more complete.

4) The heating surface is arranged in the smoke-turning chamber. The partition wall avoids the natural erosion of high-temperature smoke, which prevents the smoke partition wall from falling off virtually.

The model is YY(Q)W fuel gas thermal oil boiler that uses diesel, natural gas, and city gas fuels.

We adopt a horizontal three-pass structure. The thermal oil boiler’s heating surface mainly comprises the inner coil, and the convection heating surface is composed of the middle and outer coils.

The structure is very compact. Yongxing thermal oil boiler has high system utilization, convenient operation and maintenance, complete control system, energy saving, environmental protection, and safety. It is currently the first choice for ideal heating equipment.

Other advantages of natural gas thermal oil boiler

1) The horizontal gas thermal oil boiler adopts intelligent control, making the boiler operation incredibly convenient and simple. Design your controller as an analog screen display, centralized control by the central processing unit, with automatic ignition and shutdown program control.

Realize the automatic combustion control, the circulating pump can be automatically switched and controlled, and the failure can be automatically handled and alarmed.

2) The integrated boiler’s design attentively makes installation more convenient and faster. No unique foundation requires for all the boilers you buy.

Thermic Fluid Heater Manufacturer - Whole System Supply

Is Your Thermal Oil Boiler Flammable?

Thermal oil heater boilers are typically operated at temperatures far below the boiling point. Here your thermal oil takes the role of combustible substance that can produce flammable mist at high temperatures, resulting in fire or explosion dangers.

Due to the chemical characteristics of the thermal oil, there is high thermal power produced.

What Is Thermal Oil Boiler Working Principle?

Thermal oil heaters work in the same way as their steam-powered peers. The thermal oil heater procedure begins with determining the best setup for a given production process. The heater is then built using components of adequate capacity.

When building these devices, the working fluid (thermal oil) must retain a temperature between the critical temperature and the heating value of the oil.

Leaks and other conditions that promote mechanical collapse must be prevented. It’s also crucial to ensure the fluid is fully contained and not revealed to moisture or sunlight.

How Does A Thermal Oil Boiler System Work?

A thermal oil boiler system works efficiently to produce a high amount of steam from hot combustion products. When the coil heats up, it heats the thermal substances according to your steam requirement.

However, there is no need to apply heavy pressure to produce steam. Like any other heating fluid, the thermal fluid gets hot and then cools when pressurized through the system with the consumer and heaters in a closed system.

The basic working system is not so difficult. The only difference is between the operating temperature that is much higher than any other boiling system.

YY(Q)W Oil Gas Fired Thermal Oil Boiler-2

Which Fluid Is Used In The Thermal Oil Boiler?

The thermic fluid oil model is L-QD340, density is 860-962kg/m3 at 20℃, the kinematic viscosity is less than 40mm2/S and the acid value is less than 0.05%.

Media model / L-QD340
Medium density (20 ° C) Kg/m3 860
Medium kinematic viscosity (40 ° C) Mm2/s ≤40
Media acid value (in KOH) Mg/g <0.5
Media flash point (closed) °C ≥100

Mineral oils of petroliferous sources are also included in oils, and certain specific fluids are used in thermic oil boilers.

Mineral oils with a paraffin foundation are solvent processed with medium to high thermal conductivity. Furthermore, they are constricted with antioxidant and antifoaming preservatives.

What Thermal Oil Boiler Capacity Do You Have?

project Character
Heat supply  104Kcal/h 10 20 30 40 60 80 100 120
Rated thermal power Kw 120 240 350 470 700 950 1200 1400
Thermal efficiency  % 95 95 95 95 95 95 95 95
Design pressure Mpa 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
Maximum working temperature   °C 320 320 320 320 320 320 320 320
Furnace content oil quantity m3 0.1 0.2 0.28 0.35 0.5 0.7 1 1.3
Cycle oil m3/h 12.5 32 40 60 60 100 100 100
Piping connection diameter mm 50 80 80 100 100 125 125 125
System installed capacity Kw 12 15 20 28 30 35 40 41
Appearance L mm 1500 2000 2500 2700 3100 3500 3850 4350
size W mm 1150 1250 1350 1600 1650 1700 1800 1900
H mm 1400 1500 1650 1900 1950 2000 2160 2275
Equipment weight Kg 2000 2900 3700 4500 4900 5500 6500 7500
Model YYW1900YQ YYW2400YQ YYW3000YQ YYW350YQ YYW4200YQ YYW4700YQ
project Character
Heat supply  104Kcal/h 160 200 250 300 360 400
Rated thermal power Kw 1900 2400 3000 3500 4200 4700
Thermal efficiency  % 95 95 95 95 95 95
Design pressure Mpa 0.6 0.8 0.8 0.8 1 1
Maximum working temperature   °C 320 320 320 320 320 320
Furnace content oil quantity m3 1.7 1.8 2.4 3 3.2 3.7
Cycle oil m3/h 160 160 200 200 200 260
Piping connection diameter mm 125 150 150 200 200 200
System installed capacity Kw 66 70 80 80 85 95
Appearance L mm 4800 5300 5500 5800 6300 6500
size W mm 2000 2200 2400 2500 2800 3000
H mm 2500 2750 3000 3100 3300 3500
Equipment weight Kg 9800 12300 14500 21500 25500 25900

What Are The Key Advantages Of Thermal Oil Boiler Compared To The Conventional Steam Boiler?

We will improve your thermal oil heater as much as 6% to 10% higher than that of a conventional steam boiler. Therefore, thermal oil heaters do not struggle from failures (trap losses, combustion losses, deaerator failures) that occur in steam boiler systems, making them up to 31% more effective.

  • Maintenance

Even though the thermal fluid is highly durable, there is no danger of cold, and no water treatment options are required, thermal fluid maintenance tasks time is considerably less than that of a steam system.

  • Environmental Security

To reduce rust, you must pretreat the water in a steam generator. The chemicals cannot be dismissed into the sewer system because they pose a significant environmental risk.

Thermal oil heating systems do not involve blowdown and do not leak continuously except for steam systems. Thermal fluids are also easy to dispose of.

  • Cost Of The System

Steam systems may be less pricey than thermal fluid systems. So, one can think of a thermal oil boiler as an expensive option. However, the benefits include lower operating costs, maintenance expenses, environmental issues, and improved efficiency and product quality, therefore, it increased heating systems control. When these benefits are combined with enhanced security and lower labor costs, your thermal fluid systems’ overall economics will far outperform those of steam systems.

  • Achieve High Temperatures At A Low Pressure

Thermal fluid systems have a more comprehensive temperature range and a higher maximum heat. While using thermal oil, these systems can raise the temperature ranging from 0 to 750° F.

However, steam-based structures can only reach temperatures of 350° F only when your operation pressures surpass 425 psig. Thermal fluid systems based on water-glycol alternatives will also reach temperatures of 32–350° F at slightly lower pressures than steam, providing significantly more versatility than traditional ways.

Whereas temperature range is essential, low pressure is equally important. Most hot oils functioning at temperatures below 600° F do not require vapor pressure, and the highest system pressure is just what the centrifugal circulatory pumps produce.

Even your temperatures as high as 750° F, high-temperature substances demand less than 100 PSIG of vapor. At 750° F, a steam plan would enable over 3,200 PSIG of pressure ratio.

Thermal Oil Boiler Manufacturers In China - Top 3 Supplier
high-temperature thermal oil pumps
  • No Attendant Needed

More industrial, state, and state ordinances identify the approval of a static engineer in boiler rooms leading to excessive safety issues regarding boilers near employees.

All through active periods, numerous plants across the country must keep at least one worker with specialist skills in the boiler room to supervise the boiler’s functionality. This is typically required for fire-steamed boilers.

Thermal fluid heaters and an unloaded steam generator are frequently used in facilities that do not require a stationary attendant. This benefit is conditional on specific state or local requirements. Hence, thermal fluid heaters save your money as you don’t have to hire an expert with adequate training to supervise the boiler.

  • Outdoor Installation

Thermal fluid systems generate implicit heating power. Installing them in distant indoor or outdoor places enhances safety. Keeping the heating and primary system components separate from other critical production areas contributes to overall plant security.

Yongxing Outdoor thermal fluid systems are simple to install, but there are some significant implications. When scaling a circulation pump and engine, cold start stipulations must be regarded. Pouring slabs, weatherproofing outdoor piping equipment, and other tasks may also be required.

thermal oil boiler

  • Utilize Central Plant Heating

Relatively large or multi-purpose amenities need high-temperature mechanisms in addition to open-loop injection pressure. These services would generally require a thermal fluid heating system and a steam boiler. However, these services can now use heat exchangers rather than focusing exclusively on the thermal fluid heating system.

How To Perform The Thermal Oil Heater Efficiency Calculation?

The heater must be sized to meet the system’s highest BTU/hr requirements through peak usage. If the customer intends to increase in the future, future BTU/hr specifications should also be regarded.

In most instances, the customer is aware of the necessary heater size. Alternatively, thermal oil boiler calculation is a must:

Q = M x CP x ΔT


Q is the required amount of heat.

M is the material quantity that is heated.

Cp is the required specific heat of the material.

ΔT is the overall difference between final and initial temperature.

This measurement must consider the heated product, the container comprising the product, and any pipework that transports the hot fluid to the item. Keep in mind that the vessel must catch fire before the contents can be heated.

Energy loss must also be considered, and sound engineering practices should be accompanied to determine a reasonable safety factor.

What Is Thermal Oil Boiler Design?

A thermal fluid-structure, also recognized as hot oil, thermal liquid (or often Dowtherm) system. It is a manufacturing heating system in which a pump pumps a special heat-exchange liquid through a fired heating system raising its temperature used in warming different processes.

As oil is being used and its flammable product, which means dangerous and may become fatal. Therefore, during the design phase, these issues must be dealt with special care.

What Are The Applications Of Your Thermal Oil Boiler?

Thermal boilers are widely used in different industries. A few of the most common applications are as follows:

Yongxing thermal oil furnace produced is widely used in different industries. The scope of application includes:

1) Chemical industry-oleochemical industry, polymerization industry, reaction tank, distillation, concentration.

2) Plastic industry-plastic firing, extrusion molding, paper lunch box high-temperature molding

3) Textile industry-resin setting machine, dyeing machine, drying chamber, high-temperature machine, drum machine.

4) Rubber industry-dynamic vulcanization of tires, rubber vulcanization heating.

5) Food industry-cooking, drying, vegetable oil refining.

6) Forest products industry-heating and shaping plywood, polystyrene board, and fiberboard.

7) Paper industry-multi-layer cardboard for packaging cartons and drying.

8) Others-heating of metal electroplating tanks, coating condensation, drying, medical industry distillation, reduction, concentration, dehydration, etc.

Differentiate Between Thermal Oil Boiler VS Steam Boiler?

Depending on the heat transfer properties of the fluid, each system is tailored to a specific implementation. By matching the correct thermal fluid to your application, you can improve system efficiency and precisely control the situation.

Except for steam boiler systems, thermal fluid heating systems can occur at different temperatures without significantly increasing pressure.

The only way to raise the temperature with steam is to put more pressure, which raises the risk of an outburst.

Concerning the boiler unit, steam boiler systems necessitate a plethora of additional equipment.

A typical boiler system includes the boiler, deaerator, surge tank, overflow heat recovery, chemical feed, water lubricant, separator, and other components.

horizontal industrial oil heater

Our thermal fluid heating system is usually more straightforward, consisting of only the heating system unit, expansion tank, and pumping systems.

What Is Biomass Thermal Oil Boiler?

Wood pellets are used as fuel in biomass thermal oil boilers, and the thermal fuel oil is warmed in the pipe. The circulatory pump is used to compel the liquid thermal oil computation, and the heat is then transported to the thermal gear.

YLL thermal oil boiler

Finally, the liquid oil returns to your thermal oil heater. The use of two return structures improves thermal efficiency and lowers the flue temperature of the gas.

Radiation is kept to a minimum by using a thicker shielded material layer. All heating systems are assembly structures that are simple to install by simply connecting system devices via pipes.

The operation of a coal-fired thermal oil boiler is made easier and simpler by intelligent system control.

Biomass Thermal Oil Boiler

What Is Thermo-Dynamics Oil Boiler?

Thermo-Dynamics is a family-oriented and operated business dedicated to manufacturing American-made products from American-made components.

We combine cutting-edge manufacturing processes with continuous research and development to create boilers that are the ultimate in comfort and satisfaction, ready to face the challenges of the twenty-first century.

Thermo-Dynamics boilers are designed to meet or surpass the Department of Energy’s efficiency.

When choosing a heating system for your home, it makes sense to go with a Thermo-Dynamics heating system for peak effectiveness to accomplish quality standards designed throughout every way to suit your needs for protection, pleasure, and dependability.

thermal oil boiler Thermo-Dynamics Oil Boiler

Who Are The Popular Hot Oil Boiler Manufacturer?

There are many hot oil boiler manufacturers. However, the top companies that offer such boilers are:

  • YongXing China-based company
  • CEEF China-based company
  • YYQW thermal oil boiler China-based company
  • PIROBLOC US-based company

What Is A Thermal Oil Heating System?

Many processes require heat input that cannot be provided by one direct system and must be supplied by thermal oil heaters. This occurs when the substance to be warmed is combustible, the thermal decomposition is feasible, the consumption points are significant, or when consistent heating at elevated temperatures is required.

A substance that will be used as a heat transporter must first meet the following criteria:

  • It must be inexpensive and readily available.
  • The substance must have high thermal stability.
  • It must not target the system’s building materials.
  • Low volatility
  • Excellent heat transfer characteristics
  • Low viscosity and freezing point

What Are The Key Features Of A Thermal Oil Boiler?

A thermal fluid boiler comes with many features. As the thermal liquid passes into specific heat exchangers combined with widely accessible hot oil, they can produce near-instantaneous steam. Operators can use this steam for disinfection, wash-downs, and other procedures.

It provides optimum operating speed—the operating efficiency results in a high amount of steam production. As the thermal fluid boilers use oil or specific fuels in place of water, these boilers have no risk of corrosion.

It also doesn’t need to be worried about freezing as water in case of the steam boiler may freeze, fuels don’t get freeze. Thermic oil boilers limit down the risk of dangerous explosions.

thermal oil boiler skid mounted

What Is A NY Thermal Oil Boiler?

The NY thermal industry is currently classified as NTI. A well-known ultra-compact boiler brand provides both business and residential boilers.

It offers a one-of-a-kind, simple-to-maintain boiler that works efficiently. These boilers give the advanced ignition system supported with a high heat exchange rate.

NY thermal oil boiler


Everyday technology gives enhancements to the Boilers and their functionalities. These advanced features have significant impacts on the overall working of the industry.

Thermal oil boilers have a unique design with innovative features to produce high-efficiency steam. These boiling systems could be installed either indoor or outdoor. There is no such maintenance cost or other heating costs.

However, you only need to choose your boiler system wisely. Many companies are providing these systems but first, analyze your heat requirements, then select your boiler by a thorough analysis of the organization.

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