The new Type SZL water-cooling sealing assembly chain grate series boiler is the new assembly boiler developed by Zhongding Boiler and Xi’an Jiaotong University. The boiler inherits the domestic current mature technique of SZL assembly chain grate boiler, gains technological breakthrough on the following five areas: furnace with water-cooling chamber, back-arch structure design, boiler design with low thermal inertia, seal structure on membrane wall, and contact side seal of the grate. This is the national patent, and the patent number is ZL 2009 2 0089355.7.
This SZL series steam boiler is widely used for school, textile mill, garment factory, printing and dyeing mill, restaurant, food &beverage factory, bean product factory, meat product plant, distillery, package plant, building materials factory, coating factory, swimming pool, etc.
1. Furnace with water-cooling chamber. The left and right membrane walls reach the upper surface of grate, constitute water-cooling chamber together with the front and back water-cooling arches, increases the furnace radiation heating area, improves the output efficiency and thermal efficiency.
2. Innovative back-arch structure. The tubes come from the bottom of boiler barrel constitute the back-arch together with the both sides headers, solves the problem that lift the boiler height when layout the water-cooling arch, which leads to the waste of boiler’s space.
3. Boiler design with low thermal inertia. Thanks to the innovative water-cooling sealing chamber and the artful back-arch structure, the structure is more compact, the furnace radiation heating area increases more than 50%. The thermal inertia decreases 70% with the use of light furnace wall. Not only the output improved, the combustion efficiency is higher, also the load regulation is more flexible.
4. Water cooling sealing structure on membrane wall. Good sealed and air tight, decrease the radiation loss and smoke heat loss, increase the thermal efficiency and improve the working environment.
5. Contact side seal structure of the grate.The left and right headers are anti-coking, remove the cast iron side sealing cast iron, solves the problem of grate stucked by cast iron seal, side seal burnout because of air leakage and air flows unevenly.
|Rated Thermal Capacity(MW)
|Rated Working Pressure(Mpa)
|Feed Water Temperature(℃)
|Return Water Temperature(℃)
|Grate Area (m2)
||Second-class Bituminous Coal, Meagre Coal
|Overall Dimension part for Transportation(mm)
|Weight of Biggest Part for Transportation(t)
|Note: 1. Coal consumption: the calorific value of A II is 18841KJ/kg, the calorific value of W III is 20934KJ/kg, 1 Kcal=4.1868KJ
2. Parameter is for reference only, if any changes should follow the factory technical data.
Customer Inquiry -- Offer Professional Consulting Service -- Place Order -- Customize Boiler Based on Customers’ needs --Production-manufacturing -- Payment -- Impeccable After Sale Service (installation and debugging, periodic maintenance, etc.)
Offered Technical Documents
|Installment and Operation Instruction
|Inspection Certificate of Boiler Quality
||General Drawing of Boiler
||Boiler Body Drawing
|Boiler Room Design Drawing
||Drawing of Valves, Instruments and Accessories
Zhongding Boiler is the industrial boiler professor of China, it is referred as technical innovated enterprise. The manufacturer base is located in Zhengzhou Airport Economy Zone, and covers an area of 130 thousands m2
. The company owns about 800 employees, including 110 technical engineers, and about 700 sets advanced manufacturing equipment. Zhongding Boiler concentrates on the invention of high-tech and energy saving boilers, has owned more than 20 sorts national patent technologies.