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DZL series biomass-fired hot water boiler

DZL series biomass-fired hot water boiler

  • 1970-01-01
  • by ZOZEN Boiler
  • 188 comments
Zozen Boioer Co., Ltd. is one of the most powerful industrial boiler manufacturing enterprise in ChinaDZL series biomass-fired hot water boiler is energy conservation, low emissions, and thermal efficiency is higher than 88%, high level of automationThe structure of DZL series biomass-fired hot water boilerThe advantage of DZL series biomass-fired hot water boilerZozen Boiler is largest industrial boiler manufacturer, annual production scale exceeds 2000 sets of boilersZozen Boiler has the most automatical industrial boiler production line in China and a strict quality management system to ensure the qualityThe unique customized steam system solution of Zozen Boiler enables customers to achieve the maximum energy saving and lowest emission

Product introduction

DZL series package boilers are horizontal three-pass water & fire tube boilers with a chain grate stoker structure. Threaded pyrotechnic tubes are arranged in the drum to form a convection heating surface, while the drum and the water walls on both sides form a radiation heating surface in the furnace. Each package system is fully installed and wired before being transported to site and is electrically controlled to provide functions such as stepless speed regulation for the stoker, threshold parameter alert and interlock protection.

Product advantages

CNC manufacturing technology

  • The key processing technologies such as steel plate blanking, circling, drum and tube plate drilling adopt advanced CNC machining to reduce the assembly stress and prolong the service life of the boiler.

  • Steel tube cutting, thread tube pressing and convection tube processing all adopt advanced CNC technology.

  • Arched tube sheets and threaded fire tube was first adopted in China to increase heat transfer and completely solve the problem of cracking of the back tube sheet.  

  • Chain grate plate and back smoke chamber plate is cut by CNC plasma cutting machine, which looks neat and beautiful.

Advanced welding process

  • The vertical and circumferential seam welding of the boiler adopts advanced automatic submerged arc welding technology to ensure the welding quality. All vertical and circumferential welds will go through 100% ray detection.

  • The welding of smoke tube and the tube plate adopts pre-expansion to eliminate the gap between the tube and tube plate, then be welded by automatic argon arc welding, which effectively eliminate stress and prolong boiler life.

  • The flange of the socket is welded by robots.

  • The chain grate is manufactured by our factory, and it is tested for 72 hours before leaving the factory to ensure that the tightness is moderate and won’t deviate.

Precision parts processing

  • Advanced manufacturing technology, using assembly line automatic spinning manufacturing.

  • Enhance heat transfer and raise boiler thermal efficiency.

  • Threaded smoke tubes are highly efficient heat transfer elements which is from many years research of our company. After continuous optimization, the heat transfer coefficient is 1.8 times higher than normal smoke tubes.

Unique structural design

  • Disturbed flue gas to ensure complete combustion of volatile matters.

  • The air volume takes about 30% of the total amount, and the wind speed is 50m³.

  • The independent secondary fan makes it easy to control and adjust the wind volume and pressure.

  • The high-temperature smoke generated by the combustion first enters the horoscope flue on both sides of the body from the tail (in this case, the boiler is water tube type), and the flue gas flows outside the tube.

  • The flue gas cooled by the horoscope flue enters the threaded tube (in this case the boiler is fire tube type) arranged in the drum from the front smoke chamber.

  • The flue gas will be exhausted from the back smoke chamber, this design fundamentally solves the problem of cracking of the tube sheet of a simple fire tube boiler.

Product parameters

Model Rated thermal power(MW) Rated working pressure(MPa) Rated output water temperature(℃) Rated imported water temperature(℃)
DZL1.4-1.0/115/70-M 1.4 1 115 70
DZL2.8-1.0/115/70-M 2.8 1 115 70
DZL4.2-1.0/115/70-M 4.2 1 115 70
DZL7-1.25/115/70-M 7 1.25 115 70
DZL14-1.25/115/70-M 14 1.25 115 70

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About Company

We supply to over 100 countries and regions and have set up offices around the world to ensure prompt delivery of products and services.

Provide opportunities for employees.

Customer service

If you run into any problems with the boiler, please contact us directly by email or fill out the online service request. We will do our best to resolve any problems you might have within 24 hours.

Corporate Office

  • No. 76, Xin Da Road, Zhou tie Town, Yixing, Wuxi, China
  • +86 13506151153
  • allen@zozen.com
  • Fax : 0086-510-68991001

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