YGW Hand Fired Thermic Fluid Heater Description and Introduction

Yongxing YGW series thermic fluid heater is an industrial heating solution with high quality and stability that provides efficient operations. The thermic fluid heater has a compact horizontal construction and a stable system design to provide adequate heating capacity to meet various heating needs in production processes. With high heat transfer efficiency, low energy consumption, and long service life, the thermic fluid heater can help companies lower their operational expenses while maintaining a consistent heat source.

Additionally, the Thermic Fluid Heater is simple to install and easy to use, which allows companies to have consistent and safe heat sources to support their continuous production efforts.

Therefore, companies should consider using the Yongxing YGW Series Thermic Fluid Heater as a Professional, Efficient, and Trouble-Free Heating Solution to Improve Their Production Efficiency.

Thermic Fluid Heater, Thermal Power, And Operating Temperature:

Rated thermal power: 120-7000KW

Rated temperature of use: 250-320°C (Max. 340°C)

Rated working pressure: 0.6-1.0 MPa (Low Pressure)

Speed of circulation of heat oil: ≥1.2m/s (Anti-Coking)

Thermal efficiency: ≥82% (Coal Fired) / ≥90% (Gas Fired)

The thermal oil furnace consists of several heating sections

Process Flow (Closed Loop Liquid Phase Circulation)

Heating Section: In the heating section of the furnace fuel burns producing heat which is radiated/convected through the spirals coils inside of the furnace to heat the heat transfer oil that circulates through those coils.

Transportation Section: The hot oil (280-320 degrees C), that was heated in the heating section of the furnace, is pumped from the heating section to the heat using equipment (reactor, dryer, press) using a circulating oil pump.

Heat Release Section: The hot oil releases its heat into the heat using equipment as it cools to 240-260 degrees C.

Oil Return Section: The now cooled oil returns back to the boiler using the return oil pipeline so it can be reheated and continue to circulate in a closed loop.

Auxiliary Equipment and Complete Accessories

Auxiliary systems include: Expansion tank (pressure stabilization, oil replenishment, exhaust); Oil storage tank; Oil injection pump; Oil-gas separator; Flue gas treatment.

The oil circulation loop will be as follows: Oil storage tank → Oil injection pump → Expansion tank → Boiler coil (heating) → Circulation pump → Heat use equipment → Oil return → Boiler

Expansion Tank

The expansion tank maintains system pressure, provides additional thermal oil, and automatically vents air.

In addition to maintaining a constant level of oil as the temperature changes; it also prevents damage to both pipe and pump due to rapid pressure fluctuations. A more reliable and consistent operation that requires fewer repairs and has a longer lifespan can be achieved.

Oil Storage Tank

The storage tank contains additional thermal oil that can be used as a source of backup and replacement. It is also designed to provide an easy way to either add or remove oil from the system when performing maintenance. This will ensure that there is always a sufficient amount of oil available, and it will prevent any interruptions to your operations due to a lack of oil. By providing a continuous flow of oil, you will save time while maintaining the operation of your heating system.

Oil Injection Pump

The thermal oil injection pump will inject thermal oil throughout the entire system at an efficient rate. This will help to speed up both the initial start-up process and the subsequent refilling process. The pump can provide a constant flow with ease of use.

Therefore, you can decrease the amount of hand labor required to complete the installation and reduce the overall time it takes to install the equipment; thus allowing your production to begin sooner.

Oil‑Gas Separator

The oil-gas separator effectively removes both gases and air bubbles from the thermal oil to reduce or eliminate cavitation, noise and unstable heat transfer. By reducing cavitation and noise and providing a stable flow of oil, the separator will protect the circulation pump and provide you with more consistent heating performance, increased safety and fewer chances for breakdown.

Flue Gas Treatment

A flue gas treatment unit will clean your industrial exhaust gases. It also reduces dust and other pollutants in those gases. With it, you’ll be able to comply with the environmental regulations of your area.

In addition, the use of a flue gas treatment unit will help you to reduce air pollution at work, protect workers from the effects of air pollution, and allow you to operate within the law, thereby avoiding fines or penalties.

Additionally, by using a flue gas treatment unit, you’ll be helping to develop a more environmentally friendly production method.

Thermic Fluid Heater Furnace Structure Design and Material Advantage:

Yongxing produces a horizontal hand-fired grate type thermic fluid heater with a double layer spiral, a square combustion chamber, a large diameter thermal oil furnace coil at the front end, and a small diameter thermal oil furnace coil at the back end. Volume heat load can vary depending on fuel type. Coal-fired volume heat load ranges from 250 kW/m³ to 350 kW/m³. Gas-fired volume heat load ranges from 350 kW/m³ to 450 kW/m³.

The thermic fluid heater coil is made of GB3087 steel pipe. The most common sizes we utilize include φ38×3mm, φ42×3.5mm, φ57×3.5mm, and φ76×4mm. The tube spacing is typically between 80mm and 120mm. Yongxing manufactures both inlet and outlet headers using φ159×6 seamless steel pipe. This allows for stable pressure and smooth flow of thermal oil through the entire system.

We have designed the circulation system so that thermal oil will be forced into the inlet header and then passed through serpentine convection tubes, which are connected to the convection-radiation header. The connection of these two components creates an effective route for heat transfer. In order to maximize heat absorption in the combustion area, our engineers construct rectangular radiant thermic fluid heater coils from durable seamless pipes.

Heat Exchanger Area:

Determine based on thermal power × 1.1 / heat flux density (25-35kW/m²)

Insulation:

Alumina Silicate Fiber + Rock Wool with a minimum thickness of 100mm;

Outside wall temperature ≤50°c auxiliary equipment requirements: Boiler body, two circulating hot oil pumps (one working, one spare), oil injection pump, expansion tank (pressure stability, oil replenishment, venting), oil storage tank (minimum volume ≥ total system oil volume), oil-gas separator, air preheater, dust collector, chimney (stainless steel optional), valves and instruments, etc. Boiler venting procedure: Cold oil injection, venting. Heat to 95-100°c;

Continuous circulation at constant temperature

Moisture Evaporation (vent through the expansion tank). Heat by 10°C every two hours to 120-150°C; Remove light components. Normal heating to operating temperature (280-320°C); Put into operation. Gas in System During Operation: If gas appears in the system during operation, it will be vented again through the expansion tank.

Safety Protection:

Piping: Seamless steel pipes, argon arc welding, non-destructive testing (RT/UT), pressure test at 1.5 times the design pressure.

Safety Interlocks (Fivefold Protection)

Over-Temperature:  If the outlet oil temperature is greater than 320 degrees Celsius then an alarm will be sounded; if the outlet oil temperature exceeds 330 degrees Celsius, it will automatically shut off and the fuel supply will be cut-off.

Over-Pressure: The safety valve on the boiler will trip at 1.0 times the design pressure and there will be a high pressure alarm.

Low Flow Rate: The boiler will automatically shut down if the flow rate is less than 1.2 m/sec to prevent dry burning of the tubes.

Low Level: An alarm will sound when the oil level in the expansion tank falls below the low oil level set point. The system has automatic oil make-up capabilities.

Flameout: A flameout protection system exists for both gas and oil fired boilers. This system will automatically cut-off the fuel supply to the boiler.

YGW Series Thermic Fluid Heater Working Principle

Thermic Fluid Heater System Composition

You may load biomass pellets into your Thermic Fluid Heater furnace where they burn completely upon a moving grate, generating intense heat. Intense heat generated by the pellet burning process will pass through the Radiation Coil and Convection Tube and will transfer a significant amount of its heat quickly to the Thermal Oil.

Your circulation pump will deliver the heated oil directly to your heat consuming equipment. Once the oil has provided the required heat to your equipment it will return to the Thermic Fluid Heater furnace to be re-heated. The entire process (re-heating, delivery to equipment) is continuous and ensures a constant source of heat. The optimized flue gas passage increases heat transfer efficiency and decreases fuel loss for you.

Thermic Fluid Heater Fuel Adaptation

The YGW horizontal thermal oil boiler offers excellent fuel compatibility and is able to adapt to many types of solid fuels to meet the energy supply needs and cost control requirements of a wide variety of users, in addition to being able to be used in multiple industrial production settings. The variety of solid fuels available is quite large, and most of the available solid fuels include bituminous coal, anthracite, biomass pellets, sawdust, rice hulls, and palm shell.

Prior to being utilized in the boiler, each type of fuel will undergo a compatibility test to determine if it will provide stable combustion and achieve thermal efficiency within the required parameters. Bituminous coal is one of the most common solid fuels used in industry. It has a fairly consistent calorific value of 5000-6500 kcal/kg.

To ensure complete combustion of the bituminous coal and avoid plugging of the grate, a feed block size of 20-60mm is suggested. This block size will allow the bituminous coal to enter the fixed grate of the boiler at a steady rate and burn efficiently. Industrial users who use large quantities of bituminous coal and are sensitive to costs will benefit from using bituminous coal with this block size.

Biomass pellets offer an environmentally friendly alternative to traditional fossil fuels. Biomass pellets have a calorific value of 4000-4800 kcal/kg. The diameter of a biomass pellet is generally between 6-60 mm. The pellets have a uniform structure, burn completely and produce very little ash. Both chain grate and fixed grate furnaces can be fueled with biomass pellets.

Using biomass pellets provides a good balance between environmental protection and energy conservation, thus providing a perfect solution for those located in areas with severe environmental regulations. In terms of wood-based fuels, there are no limitations on the size or shape of the wood.

As long as the wood can be placed into the furnace opening and enter the furnace chamber for combustion, then it can be used. This eliminates much of the need for expensive pretreatment of the wood, and allows the use of numerous forms of wood waste such as sawdust, wood chips, and wood blocks.

Thermic Fluid Heater Price Composition

The Thermic Fluid Heater is sold at a transparent and reasonable price. The final price will be determined by its heating capacity, the fuel used, the quality of materials, as well as the addition of various accessories or auxiliary equipment. The YGW Thermic Fluid Heater utilizes high-quality steel tubes, as well as name brand accessory components. It includes all necessary valves, meters, storage tanks and controls. Your purchase price will cover factory testing, certificate of quality and complete technical documentation. You will have to separately budget for installation, shipping and commissioning expenses, which allows for clarity when settling up. Due to its high thermal efficiency and low failure rate, the YGW Thermic Fluid Heater can provide a relatively quick return on your initial investment.

Thermic Fluid Heater Manufacturers Advantage

As expert Thermic Fluid Heater producers, our company provides you with measurable benefits in terms of both quality and customer service. Each heater is designed and produced according to the latest national boiler safety standards, organic heat carrier furnace specifications, and national energy saving requirements. Each heater body undergoes a pressure test and an operational test before shipment to verify that all applicable standards have been met. To ensure the strength and longevity of each heater body, we utilize National Standard 20# seamless steel tubing.

Additionally, we use reliable brands of auxiliary equipment (i.e., pumps, fans, etc.) to ensure long-term stability and performance. We also offer comprehensive documentation (drawings, certificates, manuals), and ongoing post-sale support.

Furthermore, we customize heaters’ structural design, dimensional requirements, and fuel type based on your specific site conditions.

Therefore, rather than purchasing an off-the-shelf heater which may not be suitable for your particular application, you will receive a heating solution specifically engineered for your needs.

Flue Gas and Heat Exchange Design

We have carefully designed the flue gas flow and heat exchange structure. Yongxing has optimized the gas flow to maximize contact with heating surfaces. The flue gases of these boilers flow through radiation coils, convection tubes, and waste heat exchangers in sequence. This provides a large enough area for heat exchange. This optimization allows the absorption of most of the heat from the flue gases. Yongxing controls the exhaust temperature appropriately to reduce heat losses. A reasonable excess air coefficient guarantees complete combustion and reduced emissions.

Additionally, the waste heat exchanger recovers additional heat to increase the total thermal efficiency. You will receive two major advantages: reduced fuel consumption and better use of heat in your production process. We guarantee that each YGW boiler that we produce will provide you with stable and reliable performance.

Why Choose The YGW Series Thermic Fluid Heater

Choosing the YGW series thermic fluid heater will be a long-term heating partner. With its ability to provide safe, low pressure, high temperature heating to keep your production going; it also offers a significant reduction in fuel consumption each day, which greatly reduces your overall operating expenses.

A very easy to operate unit due to its manual firing system eliminates the need for complex controls and provides you with an all-inclusive safety system that protects you from all types of operational hazards. Constructed using high quality materials and with precision manufacturing techniques, it has been built to last for many years. All necessary parts and documentation are included to make installation and use as convenient as possible for you. The versatility of the YGW series allows you to use a wide variety of fuels based on what is available in your area.