Thermal Oil Boiler
Thermal oil boilers are machines that consist of an exchange body through which the thermal fluid circulates, which receives the energy in the form of heat. This comes from the combustion of different energy sources, such as biomass, natural gas, light oil or fuel derived from waste.Thermal oil boiler are composed of one or more coils through which the fluid circulates and between which the combustion gases are passed.
Advantages of Thermal Oil Boiler
Working oil temperature can be up to 400 oC with low pressure, suitable for high temperature systems, the cost for low pressure equipment will be cheaper.
Do not corrode the heat exchanger pipe in the oil furnace, the service life will be longer.
Thermal oil boilers are widely used in industry and used to replace industrial boilers because thermal oil boilers can provide high temperatures, while the Industrial Steam Boiler need a very high pressure to heat up the steam reach that temperature by using the Heat Exchanger it cause higher price.
Suitable for burning solid fuels with large size, large particle size up to 50mm, diverse fuels: coal bran, chopped firewood, rice husks, wood pellets, rice husks.
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Fully Automatic Gas Thermal Oil BoilerHebei Hongze Boiler Manufacturing Co., LTD gathers excellent technical team such as welder,Add to Inquiry -
Energy Saving and Environmental Heat Conducting Oil BoilerAdvantages of oil-fired heat-conducting oil-fired boiler: compact structure, beautiful appearance,Add to Inquiry -
Energy Saving Protection Gas Thermal Oil BoilerGas heat - conducting oil boiler is made of heavy oil. Light oil or flammable liquid as fuel. HeatAdd to Inquiry -
Fully Automatic Oil-Fired Heat Conducting Oil BoilerOil-fired heat-conducting boiler, with oil-conducting oil as its fuel and heat-conducting oil asAdd to Inquiry
- Tel: +8615833999209
- Whatsapp: +8615833999209
- Fax: +86-318-7251808
- Email: info@hbhongze.com
- Add: 2 North Suheng Road, Raoyang County, Hengshui City, Hebei Province, China.
Why Choose Us
Our Factory
Founded in February 1994, China Hebei Hongze Boiler Manufacturing Co., Ltd. is a high-tech enterprise focusing on the design, manufacture and installation of boilers and environmental protection equipment. Is the state administration of quality and technology supervision, inspection and quarantine designated production of boilers and auxiliary machinery accessories professional manufacturers, has obtained a number of product patents.
Our Products
The boiler products produced by our company mainly include: WNS series 0.5-20 tons gas-fired boiler, SZS series 20-100 tons gas-fired boiler; DZL series 1 t - 200 t lan-burning carbon boilers, DZL series 1 t - 200 t coal-fired boilers, DZL series 1 t - 200 t biomass fired boilers. Among them, large coal-burning phase change pressure heating boiler and twin-body steam boiler series products have been China's national patents, since the launch of the market, by the majority of users love and praise!
Certifications
Our company has obtained a number of patent certificates in China, including the patent certificate of "pressurized phase-change hot water boiler" in 2011; Obtained the patent certificate of "dual-fuel CNC boiler burning biomass or coal" and the patent certificate of "biomass pellet boiler" in 2014; Obtained the patent certificate of "a micro coal atomization boiler" and "a micro coal atomization burner" in 2015; In 2016, I obtained the patent certificate of "a new type of low-carbon boiler with low nitrogen combustion" and the patent certificate of "a low-carbon boiler with low nitrogen combustion". The patent certificate of "one denitrification device" obtained in 2018; Obtained the patent certificate of "a dual-grate dual-body boiler" in 2019.
Our Service
Pre-sales service: Technical consultation at any time, patient guidance and communication;
Sales services: Help customers to design the plane layout, reasonable layout and guide the construction.
After-sales service: Always pay attention to and help every customer to solve all problems in the process of using our products.
Differences Between Thermal Oil Boilers and Steam Boilers
Thermal Efficiency Comparison.
The thermal efficiency of the thermal oil boilers is 10% lower than that of steam boilers of the same fuel. For example, oil/gas-fired boilers, thermal oil boilers are only 85%, and steam boilers can reach 95%.
Purchase Costs Comparison.
The price of thermal oil boilers is similar to that of steam boilers. Under the same boiler capacity, the price of thermal oil boilers is slightly lower than that of steam boilers.
Operating Costs Comparison.
The operating cost of thermal oil boilers is higher than that of steam boilers. (The higher the thermal efficiency, the lower the operating cost.)
The hot oil needs to be replaced regularly, but water is not.
Thermal oil boilers do not require a water treatment system, while steam boilers do.
Hot Oil and Water Comparison.
When Boilers shut down.Thermal oil boilers are no need to worry about the boilers being frozen in the cold area. Steam boilers have to drain the water to prevent the boiler from freezing and cracking. Use the dry method to protect the boiler.
Thermal oil boilers do not need to worry about boiler corrosion due to the particularity of oil, steam boilers do.
Thermal oil boilers do not need to consider the sewage problem, steam boilers do.
Temperature Comparison.
Thermal oil boilers can provide temperatures up to 350°C, and steam boilers can provide superheated steam, temperatures up to 540°C.
Boiler Operating Pressure Comparison.
Thermal oil boilers can be operated under normal pressure. Steam boilers are divided into low-pressure, medium-pressure, high-pressure, subcritical, supercritical and other boilers according to different pressures.
Comparison Of Heating Methods.
Thermal oil boilers can only supply heat in the pipeline, while Steam boilers can be in contact with the product.
Boiler Operators Require Comparison.
Industrial thermal oil boiler systems do not require a licensed boiler operator. But steam boilers need.
Operation Comparison.
The start-up and shutdown of thermal oil boilers is a long process, and the time for steam boilers is relatively shorter.
Security Comparison.
Steam boilers need to be verified by the national government before it can be installed.
Thermal oil boilers don't need.
Boiler Capacity Comparison.
Thermal oil boilers can achieve 12 million kcal ≈20T/h. Steam boilers can be bigger.
Comparison Of Application Industries.
Thermal oil boilers are more suitable for industries that do not need to be in contact with products, such as petrochemicals, textiles, printing and dyeing, plastics, rubber, food processing, wood processing, asphalt heating, carton production, vegetable dehydration, baking paint, and casting sand mold drying. Steam boilers are suitable for almost all industries.
Industrial Thermal Oil Boiler Common Malfunction
The Pipe Of The Thermal Oil Boiler Has Burst Pipes And Bulges
Since the Thermal oil boiler needs to work for a long time under high temperature conditions, if the staff does not control the temperature well, the temperature exceeds the normal temperature, and the thermal oil is deteriorated at the same time. In this case, the thermal pipe of the Thermal oil boiler or The phenomenon of other working parts bursting and bulging is faulty.
The occurrence of failures such as burst pipes and bulges will seriously affect the thermal conductivity of the Thermal oil boiler and the normal operation of the process of fuel transmission and thermal circulation, which will reduce the working efficiency of the Thermal oil boiler to a certain extent.
Bumping And Spraying Of Thermal Oil
Thermal oil is the most important part of the thermal oil boiler. It is prone to deterioration when it is in a high temperature environment for a long time. If the temperature of the thermal oil is too high, or even exceeds the normal temperature; there is no good transition and buffering process for the rapid heating and rapid cooling of the thermal oil, which will cause the thermal oil to heat up and cool down too quickly.
If the thermal oil is mixed with some Water and thermal oil will have bumping, spraying and other faults during the working process. If the thermal oil boils and is sprayed on the body of the staff, it will endanger the life safety of the staff, and even cause a fire in serious cases, resulting in more serious negative effects and consequences. The bumping of the thermal oil will affect the working quality of the thermal oil, which will greatly reduce the working efficiency of the thermal oil boiler.
Thermal Oil Leak
The thermal oil boiler is a working system composed of a variety of equipment parts. If there is a connection error between the various equipment, or the connection is loose due to long-term work, the tightness of some sealing devices is reduced, and the thermal oil will appear. The occurrence of leakage accident.
If the thermal oil leaks from the Thermal oil boiler and contaminates the body of the staff, it will endanger the life safety of the staff, and even cause a fire, resulting in more serious negative effects and consequences. If the thermal oil leaks, the amount of thermal oil will be far lower than the demand of the thermal oil work site, which will affect the working efficiency of the Thermal oil boiler, and even cause the Thermal oil boiler to fail to operate normally.
Thermal Oil Boiler Evaporator Overpressure And Water Shortage
The evaporator is an indispensable part of the thermal oil boiler. It can achieve the cooling effect of the thermal oil boiler through the evaporation of water, which can keep the thermal oil boiler in a good working environment for a long time and ensure the normal operation of the thermal oil boiler operate.
- If the automatic adjustment system of the evaporator fails, it will lead to overpressure of the evaporator;
- If there is a problem with the water supply system of the evaporator or its automatic adjustment system fails, it will cause the evaporator to lack water.
The overpressure of the evaporator and the lack of water will cause the evaporator to not be able to cool down and dissipate the heat of the thermal oil boiler normally, so that the efficient operation of the thermal oil boiler cannot be guaranteed.
The thermal oil boiler is fueled by coal, oil or gas and adopts the thermal oil pump to force the medium conducting the circulation in the liquid phase. The medium transfers the heat energy to the heating equipment and then returns to the furnace for being reheated. The oil-fired thermal oil boiler has the advantages of high-temperature and low-pressure heating and precise control of the medium. The thermal oil boiler is usually composed of the main body (heating body, high-temperature oil pump and filter), high-level oil tank, control cabinet, pipeline and so on as a complete set of equipment, which is together with the heating equipment to form the forced liquid-phase circulation heating system.
The thermal oil boiler is mainly used for heating crude oil and natural gas and processing, storage and transportation of mineral oil. The refinery uses heat transfer oil to preheat cold materials, and it has been successfully used to heat the evaporation device of solvent and extractant in the process of lubricating oil manufacturing. Compared with steam heating, the thermal oil boiler has the advantages of uniform heating, simple operation, safety and environmental protection, energy saving, high temperature control accuracy and low operating pressure, and has been widely used as a heat transfer medium in modern industrial production.
Thermal Oil Boiler Scaling Causes
During The Circulation Process Of The High-temperature Thermal Oil, Some Colloids Are Produced
The high temperature thermal oil circulates and transmits heat energy in the hot oil furnace, and generates gelatin at the same time. The colloid is viscous, and good quality thermal oil can suspend the colloid in the oil. During the circulation process, part of the colloid can be filtered out through the filter. However, if there is a small part of the glue attached to the inner wall of the furnace tube, it is easy to coke.
Degrade And Polymerize With The Incoming Air
In the process of thermal oil circulation, if there is air, it is easy to degrade and polymerize, forming low boilers and high boilers. Low boilers can be discharged into the atmosphere through the high-level tank, while a small amount of high boilers can be dissolved in the thermal oil. If the solubility of the thermal oil reaches a saturated state, the high boilers will adhere to the inner wall of the tube, which is another cause of coking. reason.
The Operating Temperature Exceeds The Design Temperature
Operating temperatures above their design temperatures can cause autocatalytic thermal decomposition, resulting in coking in the tubes.
The Leakage Of Process Materials Is Brought Into The Thermal Oil System
The leakage of process materials is brought into the thermal oil system to form corrosion products and rust; and the contamination of impurities brought in during maintenance will cause coking on the inner wall of the pipe.
The Thermal Oil May Have The Tendency Of Coking And Carbon Deposition During Use;
The main reason for the increase of carbon residue is thermal polymerization reaction, which occurs due to the thermal dehydrogenation of the thermal oil during the operation of the heating system.
The Acid Value Of Thermal Oil Increases
The thermal oxidation reaction occurs when the thermal oil in the expansion tank of the open heating system contacts the air or participates in the circulation, resulting in the formation of viscous substances such as gum and asphalt, forming coking. In addition, the thermal oxidation reaction also produces acidic substances, which can cause corrosion and leakage of equipment.
Precautions When Using Thermal Oil Boiler
1) Check whether the heating furnace and its surroundings are clean without sundries; check whether the furnace body, burner, controller, observation hole, chimney (flue gas duct) are normal;
2) Know the process, equipment and procedure; check whether the oil level in the expansion tank is above the 1/4-1/2 level, and whether the temperature gauge and pressure gauge are normal;
3) Turn on the heating furnace via the power switch in the control cabinet; check whether the voltage is normal; check whether the indicator lights and display instruments are normal;
4) Adjust the primary gas relief valve and secondary gas relief valve to control the pressure to 0.005 MPa.
1) Start the heat medium oil circulating pump (one working and one standby, according to the sop for water pump), and make the pressure stable after the normal circulation lasts for 0.5 hour;
2) Press the button to start the burner; check whether the flame in the furnace is normal; if it is not ignited, start the burner again after the troubleshooting.
1) Normal boiler shutdown: a. lower the temperature gradually, stop the burner and combustion; b. stop the heat medium oil circulating pump (according to the sop for water pump) after the oil temperature is lower than 70℃; c. turn off the main power and make the shift records.
2) Emergency boiler shutdown: stop the burner quickly and move the burner away along the burner hinge at the same time to form the natural ventilation between the furnace and chimney for dissipating the stored heat in the furnace, so as to cool the heat medium oil naturally and avoid overheating.
During the patrol inspection, attention should be paid to check whether there is any leakage around the thermal oil heater. There should be enough fire-frighting equipment for oil and electrical appliances. Water is banned to be the fire extinguishing agent.
Maintenance for Thermal Oil Boiler
Daily Checks: The operator should perform daily checks of the heater, including checking the fuel level, the temperature of the thermal oil, and the pressure of the system.
Cleaning: The heater should be cleaned regularly to remove any buildup of soot, ash, or other debris that can reduce efficiency or cause damage to the system.
Inspections: The heater should be inspected regularly for signs of wear and damage, such as cracks, leaks, or corrosion. The inspection should include the burner, heat exchanger, piping, and electrical systems.
Lubrication: The bearings, pumps, and other moving parts of the heater should be lubricated regularly to ensure smooth and efficient operation.
Replacement Of Worn Parts: Worn or damaged parts should be replaced promptly to avoid further damage to the system. This may include components such as gaskets, seals, valves, and sensors.
Calibration: The system should be calibrated regularly to ensure accurate temperature and pressure readings.
Water Treatment: The thermal oil system should be treated with water treatment chemicals to prevent corrosion and scale buildup.
FAQ
As one of the leading thermal oil boiler manufacturers and suppliers in China for over 25 years, we warmly welcome you to buy cost-efficient thermal oil boiler made in China here from our factory. Good service and competitive price are available. Contact us for quotation.
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