Thermal Fluid Boiler: Top 3 Manufacturer and Supplier China

  • Thermal Fluid Heating System 320~350℃
  • Fully Automatic And 100% Safe
  • Efficiency Upto 95%
  • Multiple Fuel Compatibility and Environment-Friendly
  • With the best and affordable market prices
  • Save on maintenance and operational costs
Thermal Oil Boiler Manufacturers In China - Top 3 Supplier

Top Quality Thermal Fluid Boiler At Affordable Prices

Made with quality approved and advanced technology, the solid fuel thermal oil boiler has maximum heat absorption. This is made possible due to the presence of the closely wound helical membrane coil. In addition, the coil contains a ca stable refractory which helps in the re-radiation of heat to the fuel. 
Suited for industrial use, M S Thermic Fluid Boilers are great for heating fluids in a closed vessel. They come with a compact design, ease in assembling, maximum reliability, and cost-effectiveness. Furthermore, they have an optimum performance while they require minimum maintenance. 
50000 kg/hr oil-fired thermal boiler employs a new 4 & 5 pass design heat exchanger; it has a 84% high thermal efficiency, higher heater coil life, high heat transfer area, and automated controlling operation. Furthermore, both of the exchangers have parallel thermic fluid flow rates. 

Our Thermal Fluid Boiler Certifications

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

Yongxing Thermal Fluid Boiler Quality Assurance

Yongxing is one of the certified manufacturers and suppliers of thermal fluid boilers. We have a team of experienced engineers innovating unique ways of boiler manufacturing in the advanced research and development department.

With years of experience and research, we have come up with three excellent performing thermal oil boilers and steam boiler generator which have achieved efficiency of up to 95%.

As is unique in the market, we have integrated a unique function of adjustable thermal oil temperature. It allows you to adjust the thermal oil temperature between 150 – 350 as per your requirement.

The Yongxing engineers have designed a three-return pass for thermal oils to attain high temperatures at very low pressure. In the liquid state, you will temperature up to 340, whereas in the vapor state, the temperature increases to 400.

We are aware that you have limited access to the fuel. Therefore, the Yongxing engineers have introduced thermal oil boilers with vast fuel compatibility. You can burn multiple biomass fuels and get the same high efficiency. Also, we have introduced a thermal oil boiler design that is compatible with light oil or natural gas.

In general, our thermal fluid boilers have two main types; a horizontal and vertical thermal fluid boiler. The steam horizontal has a heating capacity range of 1400KW – 7000KW, whereas the vertical coal fired thermal oil boiler offers a range of 120KW – 1000KW.

For achieving efficiency up to 95%, we had to consider every small factor, even the thermal oil’s quality. Therefore, as per the suggestion of the research and development department, we have chosen YD-340 as the heat transferring medium of our boiler.

Due to the excellent heat transfer capabilities of YD-340, we were successful in providing you with thermal oil that can attain temperatures up to 350.

You may have noticed that you must have a special circulating pump for circulating high-temperature fluid. The Yongxing engineers have designed a special circulating pump so that your boiler’s thermal fluid continuously flows with zero interruption.

Firstly, this top-quality circulating pump forces the thermal oil to move through the coils inside the furnace. When the hot oil transfers its heat, the circulating pump will again force it to return to the furnace for reheating.

The Yongxing thermal oil boilers are not just excellent performers but also highly energy-saving and environment-friendly. The exhaust gas emissions are lower than national standards because, in our mission of 100% customer satisfaction, we consider your environment to be of equal importance.

Moreover, since our thermal oil boilers are significantly energy saving, you will get a 5 to 10% lower consumption rate than the boilers’ from other manufacturers.

Measure your power demands and choose one of the Yongxing top-quality thermal oil boilers that suit your facility and requirements.

We are waiting for your inquiry about any of these models!

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 Fluid Boiler
  • If you’re looking for the best thermal fluid boilers, Yongxing is your solution.
  • You can contact the company any time, and you will be served at your pleasure. Moreover, the company staff will take you through all the fine details relating to the technology used and how the machine works.
  • You may view the video below to get a glimpse of the working principle behind the thermal fluid boilers.

Yongxing Thermal Fluid Boiler Quality Control

Boiler Pipes
Coil Pipes


Thermal Fluid Boilers Detailed FAQ Guide

Do you need a permanent solution for eliminating overpressure issues? Introducing the thermal fluid boilers, which offer significantly higher temperature range at low pressures. As these thermal boiler systems dominate China’s industrial zone, the Yongxing engineers have decided to develop a better design.

With the help of experienced engineers, we have designed thermal fluid heaters which offer more control, flexibility, and reliability. Wondering how these thermal fluid boilers work? Here is a detailed FAQ guide that includes the introduction to the working process of our hot oil heaters.

What Is A Thermal Fluid Boiler?

The thermal fluid heaters have a close loop design of vertical and horizontal coils. Inside these coils, a thermal fluid is in constant circulation that provides heat through convection and radiation. The heat transfer is at a constant temperature and fully controlled by the user with the help of secondary control loops.

The fuel burns inside the combustion chamber and thus produces heat. Afterward, the thermal fluid absorbs the heat from the chamber and flows out of the furnace. These systems have an advantage over steam boiler and hot water boilers because it provides heat at very low pressure.

You may find the thermal fluid boilers by different names. However, they all are the same closed-loop designs. Following are some of the names of these oil-based systems.

  • Thermal oil heater
  • Thermal boiler system
  • Thermal oil heating system
  • Thermal fluid heater
  • Hot oil heater
  • Thermal oil system

The thermal fluid boilers operate using different types of heat transfer fluids. In order to know the one that suits your facility, you must understand the application of these fluids. Here are the fluid options and their application.

YLW thermal oil heater

Types Of Thermal Fluids

There are three types of heat transfer fluids used in thermal fluid heaters:

  1. Hot Water
  2. Water Glycol Solutions
  3. Thermal Oil

Let’s have a brief discussion on each one of them.

  1. Hot Water

Water is the best choice when used as a heat transfer medium, especially in view of its thermophysical properties. It has the best heat transferring abilities; however, it must be used with extra caution. If the water used is not free of contaminants, it will cause corrosive damage to the coils of thermal fluid boilers.

So, you will need a water treatment plant if you are using water as a heat transfer medium. Furthermore, the water has low boiling and high freezing point. It means that your heat transfer medium is vulnerable, and you won’t get high efficiency using it. What’s the best alternative for it? The water-glycol solution.

coal fired heaters

  1. Water-glycol solution

Since the water has high freezing and low boiling points, you can use the water-glycol mixture to solve this problem. When you mix water and glycol, you increase the waters’ boiling point and decrease its freezing point. As a result, it will increase your thermal fluid heaters’ efficiency. But while using the water-glycol solution, you are compromising on fluids’ heat capacity.

  1. Thermal Oil

Thermal oils are the best heat transfer medium for thermal fluid boilers. As compared to water solutions, it can bear high temperatures without boiling and excessively increasing the system’s pressure. The natural oils can bear temperatures up to 315, while some synthetic oils can reach 427.

In addition to high temperature bearing ability, thermal oils fulfill ASME VIII conditions. It means that you won’t need a permit to use a thermal fluid boiler in your facility. Plus, the thermal oils don’t need a treatment plant and won’t do corrosive damage to your systems. For these reasons, the Yongxing thermaic fluid heaters use thermal oils as a heat transfer medium.

thermal oil heater system

What Is Your Thermal Fluid Boiler System Design?

The Yongxing thermal fluid boilers have a unique fired heating system. It has special pumps that transfer the fluid to the fired heating system to raise its temperature. In the heating system, thermal oils are used for providing heat to the fluid of the system.

The overall thermal fluid boilers depend on the proper function of five major components. Here are their details and how they are designed to enhance efficiency.

YLL thermal oil boiler

Five Major Components Of Thermal Fluid Boilers

  • Valves
  • Pumps
  • Furnace
  • Control panels
  • Expansion tank
  1. Valves

The valves are used to control the fluid flow of the thermal fluid boilers system. Therefore, the Yongxing engineers have designed sturdy and leak-free valves to achieve high efficiency. It has improved control over the fluid flow without any leakage risk. In addition, the valves come with a bellow-type seal that completely closes when in contact with surfaces. These valves have the tendency to resist wear for a longer period and are designed with forged carbon steel.


  1. Pumps

The pump is the component that is used to transfer the fluid throughout the thermal oil system. It is a device through which the thermal fluid boilers control fluid velocity, flow direction, and the system’s overall pressure.

The Yongxing thermal fluid boilers pumps are no ordinary pumps; they are specially designed for these systems. You get a specific pump size that is designed as per the thermal fluid gravity at operational temperatures and pressure loss. Plus, these pumps come with high-quality mechanical seals. So, there are no chances of pressure and liquid leakage.

  1. Furnace

The furnace is a chamber in a thermal boiler system where the fuel burns and produces heat. Prior to pumping, the furnace heats the thermal oil, and then it’s pumped to the overall system. The furnace chamber size varies as per the different models of Yongxing thermal fluid boilers.

The chambers’ size changes as per the heat load and thermal fluid. For maintaining the power demands, each type of thermal oil heater comes with a different chamber size that successfully fulfills the power demands. And for minimizing the radiation, the furnace is well covered with a thick shielded material layer.

If you want to know the technical parameters of Yongxing thermal fluid boilers, you can check them at our website’s specific boilers catalog. Also, you can contact our 24/7 active customer support for any of your queries.

thermal oil heater coils

  1. Control panels

The Yongxing thermal fluid boiler’s automation is dependent on these control panels. These PLCs (Programmable Logistic Controllers) ensure that you get full operation monitoring. Moreover, it will tell you of any mishap in the boilers’ performance using UV scanners and pressure monitoring circuits.

These PLC packages integrated with the thermal fluid boilers’ heaters help you monitor the fluid flow using the differential pressure switches and orifice plate. And using these control panels, you get warning signals for pressure overload, the system heats up, over the expansion of tank, automatic interlocks, etc.

  1. Expansion tank

The Yongxing thermal oil heaters offer a unique thermal expansion reservoir. It is perfectly designed to store thermal oil for minimizing shutdowns. And it has the ability to absorb all thermal expansions from the oil pump. However, since the pumps move the thermal oil throughout the system, you must check them time-to-time to avoid system breakdowns.

coal biomass thermal boiler

Thermal Fluid Boiler System picture

  • Item 5: Low oil tank
  • Item 7: High expansion tank

How Do Your Thermal Fluid Boilers Work?

The thermal fluid boilers’ fame is getting more and more every day, and for a good reason. The overall working principle is simple, and it produces high temperatures without over-pressuring. Here is the overall working principle.

Thermal Fluid Boilers’ Working Principle

When the fuel burns in the thermal fluid boilers’ furnace, it produces heat that is used for steam production. Inside the furnace, there is a coil in a round shape through which the thermal oil flows. Plus, there is an FD fan that supports the combustion by providing a constant air supply.

In addition, the Yongxing thermal fluid boilers have an oil storage tank and oil feeding pump useful for maintaining the continuous steam production process. The oil tank stores the thermal oil, and the oil feeding pump transfers the thermal oil from the storage tank to the coils.

It has a three-way coil design that helps reheat the thermal fluid. In the first pass, it absorbs heat and then flows through the second and third pass to absorb a large amount of heat. As a result, it will improve the thermal fluid boilers’ thermal efficiency and decrease the exhaust gases flue temperature.

For pushing high-temperature thermal oil, specially-engineered circulating pumps are installed in the thermal fluid boilers’ system. And while moving throughout the system, the thermal oil passes through the expansion tank.

When the thermal oil absorbs heat, it passes through the system and loses its heat, due to which it expands. Since you can’t allow the thermal oil to expand in the coils or furnace, our thermal fluid boilers come with an expansion tank that compensates for the oil’s expansion. After passing through the expansion tank, the thermal oil goes back to the furnace’s coil for reheating.

As for the exhaust gasses, our eco-friendly thermal fluid boilers have an ID fan that pushes them out of the thermal fluid boilers’ chimney section. And the dust collector collects the heavy particles in the exhaust gasses and allows just gas to pass through the boilers’ chimney.

What Types Of Thermal Fluid Boilers Do you Have?

Different organizations demand different thermal fluid boilers’ requirements. Therefore, Yongxing engineers have designed three thermal fluid boilers’ models to meet customer demands.

  1. YLW Horizontal Thermal Fluid Boiler (120KW – 1000KW)
  2. YGL Vertical Thermal Fluid Boiler (1400KW – 7000KW)
  3. YY(Q)W Oil and Gas Thermal Fluid Boiler (240KW – 7000KW)

1.     YLW Horizontal Thermal Fluid Boiler (120KW – 1000KW)

The YLW thermal fluid boiler has a horizontal boiler chain grate design that uses biomass pellets as fuel. It comes with an upper-body and lower chain grate design and operates in a fully eco-friendly mode. As a heat transfer medium, the YLW biomass thermal fluid boilers use top-quality thermal fluid oils which have high boiling points.

The Yongxing YLW biomass thermal fluid boilers’ furnace consists of three main parts; The main body’s front part is the radiant heating surface, the middle part has circular coils, and the back part is the furnaces’ convection surface.

The YLW biomass thermal fluid boiler has a temperature adjustment feature. It means that you can set it to precise temperatures as per your requirement.

Moreover, the Yongxing engineers have designed it to be super eco-friendly;

The emission indexes do not just comply with the national standards but are lower than that. If you want to save on fuel costs, know that these thermal fluid boilers cost you 5 to 10% lower than the coal-fired boilers for sale.

As for the internal system, know that this thermal fluid boiler is corrosion-free. And the system is perfectly covered that it won’t let dirt get inside of it.

So, there is no need for frequent maintenance and, thus, less equipment shutdown time. As far as maintenance is concerned, these thermal fluid boilers have a design that offers convenient maintenance to their users.

YLW coal or pellet fired termal oil boiler

2.     YGL Vertical Thermal Fluid Boiler (1400KW – 7000KW)

The Yongxing YGL thermal fluid boilers are vertical biomass boilers that use biomass as fuel. It has a three-pass coil design with a large furnace area and expansion tank. The Yongxing engineers have designed these thermal fluid boilers for high-temperature demands at the minimum pressure levels.

The heating temperature range of this thermal fluid boiler is 150- 340 with pressure at a minimum. As per your requirement, it is totally adjustable and reliable. With this thermal fluid boiler, you get an excellent heat transfer rate, full automation control, a high heat utilization rate, and easy maintenance.

Furthermore, the waste gas emissions are extremely low and comply with the national standards of the atmosphere. And the fuel cost is lower than coal fired boilers. Therefore, these thermal fluid boilers are not just in every china’s industry but in more than 130 countries worldwide.

3.     YY(Q)W Horizontal Oil And Gas Thermal Fluid Boiler (240KW – 7000KW)

The YY(Q)W horizontal thermal fluid boiler is a unique boiler that uses oil and gas as fuel. Like the other two, this one also uses thermal oil as a heat transfer medium. The highly efficient circulation pump pushes the thermal fluid throughout the system.

It is a horizontal thermal fluid boiler that adopts a three-way pass design for efficient heating. The Yongxing YY(Q)W horizontal oil and gas thermal fluid boiler’s furnace comes with a radiation and convection surface. The inner coil pipes in the furnace are the radiation surface, whereas the middle and outer coil pipes are the boiler’s convection surface.

This thermal fluid boiler can burn two different fuels at different temperatures simultaneously. As per your requirement, you can set a specific temperature for both thermal oils and attain your power demands. It has a very compact design, which is a perfect option if you have limited space in your facility.

Additionally, these YY(Q)W oil gas thermal fluid boilers offer full automation control, a high heat utilization rate, easy and simple maintenance, environment protection, and fuel-saving features. It’s a perfect option for the petroleum industry, printing, dyeing and textile industries, etc.

thermal oil boiler skid mounted

Which Fuel Do Your Thermal Fluid Boilers Use?

The fuel differs as per the type of thermal fluid boiler. Since each one has a unique purpose, the fuel is different too. Here is the fuel compatibility of these three types of thermal oil heaters

1.      YLW Coal Biomass Chain Grate Thermal Oil Boiler (120KW – 1000KW)

The YLW coal biomass thermal fluid boiler burns the following fuels:

  • Distiller’s grains
  • Straw
  • Bagasse
  • Biomass mixed fuel
  • And other direct burning fuel coalYLW coal or pellet fired termal oil boiler

2.     YGL Vertical Coal Biomass Thermal Oil Boiler (1400KW – 7000KW)

The YGL vertical thermal fluid boiler burns the same fuels as YLW coal biomass thermal fluid boiler:

  • Distiller’s grains
  • Straw
  • Bagasse
  • Biomass mixed fuel
  • And other direct burning fuel coal.

3.     YY(Q)W Oil Gas Fired Thermal Oil Boiler (240KW – 7000KW)

The YY(Q) oil gas thermal fluid boiler consumes the following fuels for producing heat:

  • Light oil
  • Natural gas
  • Methane gas
  • City gas
  • And heavy oil.

What Are The Thermal Fluid Heating System Disadvantages?

With the numerous advantages of thermal fluid boilers, there are some disadvantages too. You must ready yourself to face the following drawbacks:

  • These systems are costly as compared to other boilers
  • Due to a large amount of energy movement, your thermal fluid heating system must have highly efficient circulation pumps.
  • These systems require extreme insulation; therefore, your thermal fluid boiler must have excellent performing valves.
  • Thermal oils degrade over time; So, you must change the oil with time
  • As compared to other boilers, these require extra operational controls.


You will find multiple thermal fluid boilers manufacturers, but it’s important that you get a quality guarantee. With Yongxing thermal fluid boilers, you get a quality guarantee and excellent staff service who will help you with all your queries.

Different types of thermal fluid boilers are available at our factory. If you have read the above FAQ guide, then you know which one suits your requirements.

Other than this, if you have any doubts or questions about Yongxing thermal fluid boilers, you can contact us through live chat and email.

Send us your inquiry