DZL series quick-loading boiler is a horizontal three-pass water and fire pipe chain grate boiler, which uses medium-sized bituminous coal. The boiler body is arranged in a longitudinal manner in a single drum, and a threaded pyrotechnic tube is arranged in the drum to constitute a convection heating surface, and the drum and the water cooling walls on both sides constitute a radiation heating surface of the furnace. The combustion equipment uses light chain grate; The electric control realizes stepless speed regulation of the grate, limit parameter alarm and interlock protection.
|Rated evaporation/rated heat supply（t/h/MW）||1/0.7||2/1.4||4/2.8||6/4.2|
|Steam temperature/Rated water temperature（℃）||170/184||184/194/204/225||914/204/225||194/205|
|Base-base heating value（KJ/kg）||16400|
|Boiler fuel consumption（kg/h）||196||392||784||1176|
|Boiler thermal efficiency（%）||79.00||79.00||79.00||79.00|
|Maximum shipping weight（t）
|Maximum transport size LxWxH(m)||5.2x2.0x2.9||5.7x2.5x3.5||6.6x2.6x3.6||7.3x3.2x3.6|
Notice: As the company's products continue to improve parameters of the above products will be continuously updated page listed for reference only.
CNC manufacturing technology
· The key processing technologies such as steel plate blanking, circle garden, drum drum and tube plate drilling adopt advanced numerical control processing to reduce the assembly stress and prolong the service life of the boiler.
· Steel pipe cutting, thread pipe pressing, and convection pipe processing adopt advanced numerical control technology.
· The use of arched tube sheets and threaded tobacco tubes was first adopted in China to increase heat transfer and completely solve the problem of cracking of the rear tube sheet.
· Chain oven layout, front and rear smoke box panel using CNC plasma cutting machine, neat and beautiful.
Advanced welding process
· The vertical and circumferential seam welding of the boiler adopts advanced submerged arc welding process to ensure the welding quality. All longitudinal and circumferential welds are subjected to 100% ray detection.
• The welding of the smoke pipe and the tube plate adopts pre-expansion to eliminate the gap between the tube and the tube plate, and then the welding process of argon arc welding is used. Effectively eliminate stress and prolong boiler life.
·The flange of the socket is welded and robot welding is used.
·The grate grate is manufactured by our factory and is tested for 72 hours before leaving the factory to ensure that the tightness of the grate is moderate and does not go wrong.
Precision parts processing
· Advanced manufacturing technology, using assembly line automatic spinning operation.
·Enhance heat transfer and increase boiler thermal efficiency.
· Threaded tobacco pipes are highly efficient heat transfer elements for many years of research by our company. After continuous optimization, the heat transfer coefficient is 1.8 times higher than that of ordinary tobacco pipes when the minimum flow resistance is met in the selection of thread groove depth and pitch.
Unique structural design
• Furnace flue gas disturbances to ensure complete combustion of volatiles.
· The wind volume accounts for about 30% of the total air volume, and the wind speed is about 50m3/s
Independent secondary fan, easy to control and adjust the wind pressure.
The high-temperature smoke generated by the combustion first enters the eight-character flue on both sides of the body from the tail (in this case, the water pipe type), and the flue gas flows outside the pipe.
• The flue gas cooled by the eight-character flue then enters the threaded pipe (in this case the fire tube type) arranged in the drum from the front smoke box.
· From the rear smoke box, this design fundamentally solves the cracking of the tube sheet of the pure fire tube boiler.
Rich auxiliary configuration
Broadcaster: ·Dispenser, evenly feed, prevent tempering.
Speed control box: · Based on the biomass burning rate, design a reasonable speed to ensure the fuel burns out.
Panels: · Cold-rolled embossed and concave-convex panels, strong and beautiful.
Access door: · Reasonable manhole and hand hole layout, easy maintenance. Furnaces are equipped with access doors for easy access and maintenance.
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