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.
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.
|Model||Rated thermal power（MW）||Rated working pressure（MPa）||Rated output water temperature（℃）||Rated imported water temperature（℃）|
* The above basic parameter table is for your reference, ZOZEN Boiler can customize the suitable boiler device and system solution based on your actual condition.
* All specifications and descriptions provided herein may be different from the actual specifications and descriptions for the product. ZOZEN Boiler reserves the right to make changes to this document and the product described herein, at anytime, without obligation on ZOZEN Boiler to provide notification of such change.
Biomass-fired boilers are jointly developed and manufactures by ZOZEN boiler and Shanghai Jiaotong University. According to the fuel characteristics a...
Ainengju Photovoltaic Technology Co., Ltd. is a science and technology development enterprise that integrates production, sales, and technology develo...
In recent years, starch sugar has been more and more widely used in the food industry as a new sweetener, and the starch sugar industry has also devel...
First, you can communicate with our professional boiler consultant through email, telephone, form or online chat.
Here are some questions to know about you，eg：
1. what are your energy types and energy saving requirements?
2. the use of your boiler environment?
3. what do you ask for the power of the boiler?
4. what are you facing at the moment?
Next, according to your needs and conditions of use, we will provide
energy saving and reliable boiler system solutions.
——“ Let your boiler operate more efficiently and economically”
We will regularly communicate with you to understand your boiler operation and guide according to your needs. If you have other needs, we will provide you with the first time. Include：