YQW series gas-fired thermal oil boilers have a three-pass round coil structure. A conical coil is used for the effective protection of the furnace wall at the boiler end. This product is equipped with an advanced combustion device and is fully automated in operation. After the burner ignites the fuel, flame fills the round coil tubes and transfers heat by radiation through the tube wall (first pass). The high temperature flue gas gathers at the back door and then turns to the convection tubes section (second pass), where heat transfer takes place by convection. The flue gas gradually cools down here and flows to the front door, where it is reversed and goes into the third pass. After that, it enters into the chimney through the economizer and is released into the atmosphere.
This type of heater is delivered as a whole, and is installed on site, it only needs to connect thermal gas(oil) piping and electricity to start operation. The heater has four heating areas: furnace radiation heating area, the first convection tube bundle heating area, the second convection tube bundle heating area and economizer (waste heat boiler).
1 . The laying-off of steel tube adopts CNC 3D laser cutting machine.
2 . The manufacture of round coil tube adopts CNC coil tube automatic production line. Once-forming and no need for plastic .
3 . The tube butt adopts argon arc welding technique and the seams will be done x ray real-time imaging, preventing unqualified seams from entering coil production line .
4 . Heater is wholly assembled before delivery, it is easy for installation, debugging and operating.
5 . The inlet and outlet with end flanges and flanged cover structure facilitate the installation and layout of tubeline in boiler house.
6 . Internal side adopts good insulation material, outside uses stainless steel plate, which can mostly reduce heat lost and make working environment better.
7 . The inner coil tube has bigger flow rate, so it is more stable under high temperature operation.
8 . Conical coil effectively protects the furnace wall at the end of heater and burner on the top.
|Model||Rated thermal power (KW)||Rated thermal power (x104kcal/h)||Design working temperature(≤℃)||Rated working pressure(MPa)||Thermal efficiency (≥%)||System installation power(KW)|
Our products have been sold to more than 100 countries and regions and set up offices in many countries to ensure that they serve customers at the first time.
ZOZEN boiler covers an area of 150 thousand square meters, with an annual production capacity of 2000 industrial boilers and 25000 tons of steam.
ZOZEN is an AQSIQ approved boiler and pressure vessel manufacturer. We hold the ASME "S" and "U" Certificates and have earned ISO9001:2000 Certification.