Machine Thermal Oil Heater- Manufacture PT Indira Mitra Boiler

PT Indira Mitra Boiler is a machine that is often used in various industries and is functioned as a heat-generating device and functions as a conductor of heat media by using oil media in a spiral-designed pipe placed in a heating tube/tank that is designed in such a way which is then heated by fire originating from the burner. with certain fuels.

The calorific value produced by this thermal oil can reach more than 300 °C. As for this Thermal Oil Heater fuel, there are various types of Thermal Oil Heater for Gas fuel, Thermal Oil Heater for Coal fuel, Thermal Oil Heater for diesel fuel, Thermal Oil Heater for wood fuel, etc. Heat-producing machines are usually obtained from a heater using energy. electricity.

However, due to energy consumption heat for the range of industrial companies/factories or the asphalt needed is very large, then thermal oil is the solution. This is based on the consideration of the consumption cost of the comparison between the cost of electricity and fuel for the thermal oil heater. You can imagine how much electrical energy and costs the factory has to pay for PLN if the heater uses electricity. Most companies that use heat energy use a Steam Boiler

Thermal Oil Heater for Industry

A Thermal Oil Heater is an ideal industrial heating solution for processes that require high-temperature heat but do not require steam. Many manufacturing facilities continue to use steam boilers simply because they are familiar with the technology, even though their production processes only require indirect heat. In such applications, a Thermal Oil Heater is often a more efficient, economical, and practical alternative.

A conventional steam boiler generates saturated steam by heating water under pressure. Depending on the operating pressure, steam temperatures typically range from 170°C to 210°C, and the system requires extensive auxiliary equipment such as water treatment systems, feed water tanks, deaerators, blowdown systems, and chemical dosing units.

In contrast, a Thermal Oil Heater uses a specially formulated heat transfer fluid circulating through a closed-loop system to deliver temperatures of up to 350°C while operating at low pressure. Because there is no steam generation, the system eliminates many of the operational challenges associated with conventional boilers, including water treatment, scaling, corrosion, and steam losses.

When selecting between a Thermal Oil Heater and a Steam Boiler, manufacturers should evaluate the actual heat requirements of their production process. If steam is not directly required, a Thermal Oil Heater often provides higher energy efficiency, lower operating costs, and simplified maintenance.

Flexible Design for Various Industrial Applications

Thermal Oil Heaters are available in both horizontal and vertical configurations to accommodate different plant layouts and installation requirements.

Vertical Design

The vertical configuration is ideal for facilities with limited installation space. Its compact footprint allows easier integration into existing production lines while maintaining excellent thermal performance. Vertical units are commonly used for small to medium heating capacities.

Horizontal Design

Horizontal Thermal Oil Heaters are generally preferred for medium and large-capacity systems because they provide easier access for inspection, maintenance, and burner servicing. The larger heating surface also supports higher thermal outputs and improved serviceability over the equipment’s operating life.

High-Quality Heating Coil Construction

The heart of every Thermal Oil Heater is its heating coil, which is manufactured from premium-quality seamless boiler tubes specifically designed for high-temperature service.

The coil is continuously wound to provide uniform thermal expansion and efficient heat transfer. During fabrication, every welded connection undergoes strict quality inspection, including Non-Destructive Testing (NDT) such as Radiographic Testing (RT) or other approved inspection methods where applicable, followed by a hydrostatic pressure test to verify mechanical integrity and leak-free performance before delivery.

This rigorous manufacturing process ensures:

• High mechanical strength
• Excellent resistance to thermal stress
• Reliable long-term operation
• Safe performance under continuous industrial service

 THERMAL OIL HEATER in terms of producing heat energy, because Thermal oil heaters can produce heat energy with high temperatures that only work at pump pressure or even atmospheric pressure. The oil used in thermal oil will not run out and evaporate, unless there is a leak in the oil pipe.

If a leak occurs, it must be repaired and replace the wasted oil according to the specified size as at the beginning. The hot gas from the combustion heats the flow of thermal oil in the combustion chamber as radiant heat and then heats the oil in the convection coil through the gaps between the coils at a certain speed in 3 streams in the opposite direction to the direction of the thermal oil flow.

In thermal oil, oil is a heat-conducting medium that does not cause scale or dirt in the pipe. so there is no cost to clean the oil line pipe which is not usually done in steam boilers.

The fire-resistant pipe that is used will not be damaged due to the heat pipe flowing with the circulation pump, just don’t let the oil temperature get out of control and exceed the pipe’s ability to receive heat.

Therefore, the safety system for supplying heat from the burner fire must always be in good condition. In this case, the thermocontrol on the control panel and the thermocouple must be properly integrated so that the possibility of overheating does not occur.

The control system on the control panel and control part safety on the body thermal oil unit must be ensured that the conditions and functions are running normally. the better the control conditions, the lower the operator interval in monitoring the thermal oil unit. Although Thermal oil does not operate under high pressure, the pipe specifications must be standard for the pipes used for boilers.

Boiler pipes have high heat and pressure resistance. In this case, thermal oil must use pipes that are resistant to high temperatures. Thicker boiler pipes, will further reduce the risk of pipe damage when receiving heat.

Comparative Study: Why Choose a Thermal Oil Heater?

Thermal Oil Heaters have become the preferred heating solution for many industrial processes that require high temperatures with low operating pressure. Unlike conventional steam boilers, which rely on pressurized water to generate steam, thermal oil systems circulate a specially formulated heat transfer fluid through a closed-loop circuit. This design offers higher efficiency, improved safety, lower maintenance, and more stable temperature control.

Below is a comparison between Thermal Oil Heaters and Steam Boilers.

1. High Temperature at Low Operating Pressure

One of the most significant advantages of a Thermal Oil Heater is its ability to provide high-temperature heat transfer—typically up to 300–350°C—while operating at low pressure, generally only at the pressure required to circulate the thermal oil through the system. Unlike steam boilers, which require increasingly higher operating pressures to produce higher temperatures, thermal oil systems achieve the same process temperatures without generating high-pressure steam.

Operating at low pressure offers substantial advantages in terms of safety, equipment design, and maintenance. Since the system is not classified as a high-pressure steam vessel, the risk associated with pressure-related failures is significantly reduced, resulting in safer and more reliable industrial operation.

Compared with a conventional steam boiler, a Thermal Oil Heater offers:

• High process temperatures up to 350°C at low operating pressure
• Improved operational safety
• Lower mechanical stress on piping and equipment
• Reduced risk of pressure-related accidents
• Simpler piping and distribution systems
• Lower installation and maintenance costs
• More stable and precise temperature control
• Greater system reliability during continuous operation

These advantages make Thermal Oil Heaters the preferred choice for industrial applications requiring high-temperature process heating with maximum safety and efficiency.

2. Closed-Loop Heat Transfer Fluid System

A Thermal Oil Heater utilizes a closed-loop heat transfer system in which specially formulated thermal oil continuously circulates between the heater and the process equipment. The heat transfer fluid absorbs thermal energy from the burner and delivers it directly to the process before returning to the heater to be reheated.

Unlike water in a steam boiler, thermal oil remains in the liquid phase throughout normal operation. It does not evaporate, is not consumed during the heating process, and continuously recirculates within the sealed piping system.

Thermal oil generally requires replenishment only under the following conditions:

• Minor losses caused by system leakage
• Scheduled replacement at the end of the fluid’s service life
• Maintenance or system modifications requiring fluid removal

Because the same heat transfer fluid is reused continuously, the system eliminates many of the operating challenges associated with steam generation, including feedwater treatment, blowdown losses, and continuous water consumption.

The closed-loop design provides numerous operational advantages, including:

• No continuous water consumption
• No steam loss during operation
• No evaporation under normal operating conditions
• Stable and uniform heat transfer
• Reduced operating costs
• Lower maintenance requirements
• Improved thermal efficiency
• Longer service life of the heat transfer fluid
• Simplified system operation and management

This efficient closed-loop circulation system is one of the primary reasons why Thermal Oil Heaters are widely adopted in industries requiring continuous, high-temperature process heating with low operating costs and exceptional reliability.

3. No Scale Formation and Superior Heat Transfer

One of the major advantages of a Thermal Oil Heater is that it eliminates the scaling problems commonly found in conventional steam boiler systems. Steam boilers use water as the heat transfer medium, and natural water contains dissolved minerals such as calcium, magnesium, and silica.

Without proper water treatment, these minerals precipitate and form scale deposits on the internal surfaces of boiler tubes. Even a thin layer of scale acts as an insulating barrier, significantly reducing heat transfer efficiency, increasing fuel consumption, and creating localized hot spots that can shorten the life of the boiler tubes.

In contrast, thermal oil is a specially formulated heat transfer fluid that contains no dissolved minerals and circulates within a completely closed-loop system. As a result, the system does not experience the scaling or mineral buildup associated with water-based heating systems.

Key advantages include:

• No scale formation inside heater coils
• No lime or calcium deposits
• No internal fouling caused by water hardness
• Consistent heat transfer efficiency
• Lower fuel consumption
• Reduced risk of overheating due to scale insulation
• Longer service life of the heating coils

Because the heat transfer surfaces remain clean throughout operation, Thermal Oil Heaters maintain stable thermal performance and high efficiency over many years of continuous industrial service.

4. Lower Maintenance Costs

Since Thermal Oil Heaters operate without water or steam, they eliminate many of the maintenance tasks required by conventional steam boiler systems. Water-based boilers require continuous monitoring and treatment to prevent scaling, corrosion, oxygen attack, and mineral deposits that can reduce efficiency and damage critical components.

A typical steam boiler installation often requires several auxiliary systems, including:

• Water softener
• Deaerator tank
• Feed water tank
• Chemical dosing system
• Blowdown system
• Continuous water quality monitoring
• Regular descaling and tube cleaning

These systems increase both the initial investment and the ongoing operating costs.

By comparison, a Thermal Oil Heater uses a closed-loop circulation system in which the heat transfer fluid is continuously reused. Since there is no evaporation, blowdown, or mineral contamination, routine maintenance is significantly reduced.

Typical maintenance activities for a Thermal Oil Heater include:

• Periodic inspection of the circulation pump
• Burner maintenance and combustion tuning
• Checking thermal oil quality
• Inspecting expansion tank and piping
• Verifying the operation of safety controls and instrumentation

The absence of water treatment equipment and scale-related maintenance results in several important benefits:

• Lower maintenance costs
• Reduced plant downtime
• Fewer auxiliary systems
• Lower operating expenses
• Improved equipment reliability
• Longer service life
• Higher overall plant availability

These advantages make Thermal Oil Heaters an economical and reliable choice for industries seeking high-temperature process heating with minimal maintenance requirements.

5. Efficient Heat Transfer

One of the key advantages of a Thermal Oil Heater is its highly efficient heat transfer system. Inside the heater, thermal energy is transferred in two stages to maximize fuel utilization.

The first stage occurs in the radiant section (furnace), where the burner flame and high-temperature combustion gases directly radiate heat to the thermal oil coils surrounding the combustion chamber. This radiant heat transfer provides the majority of the system’s thermal energy.

The second stage takes place in the convection section, where the remaining hot combustion gases pass through multiple coil banks before exiting through the chimney. As the flue gases flow across these coils, the residual heat is recovered and transferred to the circulating thermal oil, significantly improving overall thermal efficiency.

This multi-pass coil design ensures maximum heat recovery, minimizes stack losses, and maintains a uniform oil temperature throughout the system. As a result, Thermal Oil Heaters achieve high thermal efficiency, lower fuel consumption, stable process temperatures, and reliable long-term operation, making them an ideal solution for demanding industrial heating applications.

6. Continuous Thermal Oil Circulation

A circulation pump is one of the most critical components of a Thermal Oil Heater. Its primary function is to maintain a continuous flow of thermal oil through the heater coils and the entire closed-loop system, ensuring efficient heat transfer and safe operation.

As thermal oil continuously circulates, heat is evenly absorbed in the radiant and convection sections before being delivered to the process equipment. Constant oil flow prevents excessive temperatures from developing at any point inside the heating coils, protecting the system from thermal stress and extending equipment life.

Continuous circulation provides several important benefits:

• Prevents localized overheating (hot spots) within the heater coils
• Protects heater tubes from thermal damage and premature failure
• Maintains uniform oil temperature throughout the heating system
• Improves heat transfer efficiency
• Extends the service life of the thermal oil and heater components
• Ensures stable and reliable process temperature control

For this reason, Thermal Oil Heaters are equipped with flow switches and interlock safety systems. If the circulation pump stops or the oil flow falls below the minimum safe level while the burner is still operating, the control system automatically shuts down the burner to prevent overheating.

Without adequate oil circulation, the temperature of the heater coils can rise rapidly beyond the allowable design limits, causing thermal oil degradation (cracking), carbon deposits (coking), coil deformation, and potentially permanent damage to the heating tubes. A properly designed circulation system is therefore essential for achieving maximum efficiency, operational safety, and long-term reliability.

7. Advanced Safety Control System

Although a Thermal Oil Heater operates at low pressure, it still requires a sophisticated control and protection system to ensure safe, reliable, and efficient operation. The greatest operational risk is overheating, which can degrade the thermal oil, damage the heater coils, and shorten the service life of the entire system.

To prevent these conditions, modern Thermal Oil Heaters are equipped with multiple safety devices that continuously monitor operating parameters and automatically shut down the burner if abnormal conditions occur.

Typical safety components include:

• High-temperature limit controller
• Operating temperature controller
• Flow switch
• Low thermal oil level switch
• Pressure gauges
• Expansion tank
• Burner flame safeguard system
• Low fuel pressure switch
• High combustion air pressure switch
• Emergency shutdown (ESD) system

These devices are integrated through the control panel to provide multiple layers of protection. The temperature controller continuously monitors the thermal oil temperature via thermocouples or RTD sensors, while the flow switch verifies that adequate oil circulation is maintained before allowing burner operation.

If excessive oil temperature, loss of circulation, flame failure, or any other unsafe condition is detected, the burner is automatically shut down to prevent overheating and protect both the equipment and operating personnel. This comprehensive safety philosophy ensures maximum system reliability while minimizing the risk of equipment failure and unplanned downtime.

8. Improved Operator Convenience Through Automation

Modern Thermal Oil Heaters are equipped with PLC (Programmable Logic Controller) or advanced microprocessor-based control systems that automatically regulate burner operation according to the process heat demand.

Instead of continuously cycling the burner on and off, the control system can operate single-stage, two-stage, or fully modulating burners to maintain precise oil temperatures while maximizing fuel efficiency.

Key operational advantages include:

• Minimal operator intervention
• Fully automatic temperature control
• Stable and consistent process heating
• Reduced fuel consumption
• Improved production quality
• Faster response to changing process loads
• Continuous monitoring of operating parameters
• Alarm and fault diagnostics for easier maintenance
• Reduced risk of human error

Many modern systems also feature touch-screen Human Machine Interfaces (HMI), remote monitoring capabilities, and data logging functions that enable operators to monitor system performance in real time. This high level of automation improves productivity, reduces operating costs, and ensures consistent process quality throughout continuous industrial operations.

9. High-Temperature Boiler Tubes for Long Service Life

Although Thermal Oil Heaters operate at relatively low pressure, the heating coils are continuously exposed to temperatures that may reach 350°C or higher. For this reason, only high-quality seamless boiler tubes specifically designed for elevated-temperature service should be used.

Common materials include:

• ASTM A106 Grade B
• ASTM A192
• EN 10216 P235GH
• DIN 17175 ST35.8

These materials provide excellent mechanical strength, superior thermal conductivity, and outstanding resistance to thermal fatigue caused by repeated heating and cooling cycles.

The use of premium boiler tubes offers several important advantages:

• High resistance to thermal stress
• Excellent dimensional stability at elevated temperatures
• Reduced risk of tube deformation
• Longer service life
• Improved operational safety
• Lower maintenance requirements
• Reliable performance during continuous industrial operation

When combined with proper thermal oil circulation, effective combustion control, and regular preventive maintenance, these high-temperature boiler tubes enable Thermal Oil Heaters to operate efficiently and reliably for many years, even under demanding industrial conditions.

10. Wide Range of Industrial Applications

Thermal Oil Heaters are widely recognized as one of the most versatile industrial heating systems, serving a broad range of industries that require high-temperature, uniform, and reliable process heating. Their ability to deliver temperatures of up to 350°C while operating at low pressure makes them an ideal solution for continuous manufacturing processes where precise temperature control, energy efficiency, and operational safety are critical.

Unlike conventional steam boilers, Thermal Oil Heaters transfer heat indirectly through a closed-loop circulation system, providing consistent thermal energy without the need for high-pressure steam. This makes them particularly suitable for applications involving heating, drying, melting, curing, distillation, evaporation, polymerization, and other temperature-sensitive industrial processes.

Typical Industrial Applications

Palm Oil Industry

Thermal Oil Heaters are extensively used in palm oil mills and refineries for heating Crude Palm Oil (CPO), Palm Kernel Oil (PKO), storage tanks, heat exchangers, deodorization systems, fractionation plants, and refinery processes. They also supply thermal energy to kernel dryers, sterilization support systems, and edible oil production facilities.

Asphalt and Bitumen Industry

Used for heating asphalt storage tanks, bitumen pipelines, asphalt mixing plants (AMP), emulsion production, and road construction equipment, ensuring the proper viscosity required for pumping and mixing.

Chemical and Petrochemical Industry

Provides stable process heating for reactors, distillation columns, mixing vessels, heat exchangers, evaporators, polymerization units, and specialty chemical manufacturing where accurate temperature control is essential.

Food and Beverage Industry

Supports cooking, frying, roasting, baking, edible oil refining, dairy processing, sugar production, starch manufacturing, cocoa processing, and various food manufacturing operations requiring indirect heat.

Textile Industry

Supplies thermal energy for textile drying machines, printing cylinders, heat-setting equipment, stenters, dyeing processes, fabric finishing, and coating applications.

Rubber Industry

Used in rubber compounding, vulcanization, latex processing, tire manufacturing, conveyor belt production, and molded rubber component manufacturing.

Pharmaceutical Industry

Provides clean and accurate heating for pharmaceutical reactors, drying systems, sterilization support equipment, chemical synthesis, and precision manufacturing processes that require stable temperatures.

Resin, Adhesive, Paint, and Coating Industry

Thermal Oil Heaters are widely applied in the production of synthetic resins, adhesives, inks, paints, varnishes, coatings, and specialty chemicals where consistent process temperatures directly affect product quality.

Wood Processing Industry

Used for veneer dryers, plywood production, particle board manufacturing, MDF production, kiln drying systems, wood preservation, and timber processing facilities.

Plastic and Polymer Industry

Supports extrusion, injection molding, blow molding, thermoforming, plastic recycling, composite manufacturing, and polymer processing where precise mold and process temperatures are required.

Printing and Packaging Industry

Provides process heating for laminating machines, drying ovens, flexographic printing presses, gravure printing, coating lines, film production, and packaging equipment.

Biomass and Agricultural Industry

Ideal for rotary dryers, grain dryers, biomass dryers, animal feed production, fertilizer manufacturing, rice milling, corn drying, wood pellet production, and other agricultural processing facilities.

Oil & Gas Industry

Widely used for heating crude oil, fuel oil, lubricating oil, storage tanks, pipelines, separators, marine cargo heating systems, and viscosity control applications for petroleum products.

Marine and Tank Terminal Facilities

Provides efficient heating for heavy fuel oil (HFO), bitumen, wax, asphalt, molasses, edible oils, chemicals, and other high-viscosity liquids stored in tanks or transported by tanker vessels and barges.

Renewable Energy and Biofuel Industry

Supports biodiesel production, bioethanol processing, waste oil recycling, biomass energy plants, and sustainable industrial heating applications that require efficient indirect heat transfer.

Why Industries Prefer Thermal Oil Heaters

Across these diverse industries, Thermal Oil Heaters offer several operational advantages:

• High process temperatures up to 350°C
• Low-pressure and safer operation
• Excellent temperature stability
• High thermal efficiency
• Uniform heat distribution
• Reduced fuel consumption
• Lower maintenance requirements
• Longer equipment service life
• Minimal operating costs
• Reliable continuous operation
• Easy integration with automated PLC control systems

As industries continue to prioritize energy efficiency, operational safety, and sustainable manufacturing practices, Thermal Oil Heaters have become the preferred industrial heating solution for high-temperature process applications worldwide, delivering reliable, cost-effective, and environmentally responsible thermal energy across virtually every manufacturing sector.

Conclusion

For industries requiring stable process temperatures above 200°C, a Thermal Oil Heater offers significant advantages over a conventional steam boiler.

Its ability to produce high-temperature heat at low operating pressure, combined with a closed-loop heat transfer system, eliminates many of the maintenance and safety challenges associated with steam generation. Without water treatment, scale formation, or high-pressure operation, Thermal Oil Heaters provide greater energy efficiency, lower operating costs, and improved process reliability.

For manufacturers seeking a safe, efficient, and long-term industrial heating solution, a Thermal Oil Heater is often the most practical and economical choice.

Workshop
Kawasan Pergudangan Laksana Business Park, Jalan Laksana 6 Blok F 09, Desa laksana Kec. Pakuhaji, Kab. Tangerang, Banten- 15570

PT Indira Mitra Boiler
Ratman Bejo
☎️081388666204

My Website
https://indira.co.id

Email: info@indira.co.id
Email: idmratman@gmail.com

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