1. General introduction
It is a kind of one-drum, vertical, three pass, water-fire tube boiler. This series adopt lots of new technology, such as use  convex tube plate, wing-shape flue, spirally corrugated tube and so on. The water tubes in the two sides of the furnace is radiation heating surface, and the wing-shape flue and spirally corrugated tube are convection heating surface. 
DZL Coal Fired Steam Boiler is a new eco-friendly and energy-saving product co-developed by our company and Professor Li Zhiguang-a famous boiler expert, professor of Harbin Institute of Technology and director of Beijing Institute of Light Boiler. It is called as a revolution of industrial boilers by domestic and foreign experts. 
 


2. Product details 

4. Boiler Advantages
I. Sufficient and Steady Capacity
With efficient diabatic spirally corrugated tube, it is designed by using heat transfer and flow resistance technologies of Harbin Institute of Technology. The boiler's actual capacity is 10-15% higher than name plate capacity: As the physical dimension and smoke speed of the spirally corrugated tube are rational, and the spirally corrugated tube doesn't form soot or wear when the boiler normally operates, the boiler's capacity and heat efficiency don't reduce with the extension of operating time;
II. Rapid Warming and High Heat Efficiency
The main heating surface is installed in the shell, so it doesn't leak cold air to the smoke side, and nearly a half of shell surface is heated. The boiler's heating up time is one third shorter than other furnaces, and heat efficiency is the highest in various furnaces;
III. Low Original Dust Discharge Concentration, Environmental Protection and Energy Conservation
It uses new arch and hearth with large volume, the rear of the hearth has a dust separation reversing chamber, and the unburned dust particles fall to the hearth for secondary combustion, corresponding to primary dedusting in the furnace. Therefore, it ensures that the original dust discharge concentration is lower than national permissible value, reducing fuel consumption, and protecting the environment;
IV. High Steam Quality
The optimally designed feeding apparatus reduces overhigh water level in shell high temperature zone due to overheat; the optimally designed steam separator facilitates vapour gravity separation, and makes the steam humidity lower than 1%, obviously lower than national standard of 4%;
V. Strong Water Quality Adaptability
By adopting the advanced water circulation technology, it improves water circulation speed of high temperature zone, increases the flow of bottom water, and avoids sundries deposition and scaling, with stronger water quality adaptability than other furnaces, reducing fuel consumption, and improving operating time;
VI. Small Overall Dimensions and Low Boiler Room Investment Cost
The main heating surface is installed in the shell, and a boiler with less capacity can cancel the rear heating surface. Its overall dimension is obviously lower than other furnaces. The boiler below 100 steam tons (70MW) can be arranged in single layer, making the investment of the boiler room save more than 50% than other furnaces;
VII. Low Operating Cost, Safety and Reliability
The adoption of advanced water circulation technology and optimization of boiler structure improve the operating conditions of the high temperature tube plate, water wall tube and shell bottom. In normal water quality condition, it doesn't cause tube explosion, tube plate cracking or shell bottom bulge. As the boiler has large water capacity, it doesn't need special protective measures in sudden power failure, and prevents damage accidents of heating surface and shell medium due to vaporization. The safe reliability is guaranteed, and operating cost is far lower than other furnaces;
VIII. Short Installation Time, Low Installation Cost
The furnace is delivered after fast assembly, assembly and semi-assembly. Compared with other furnaces delivered after loose packing, its installation period and installation cost are reduced by over 30%. 

5. Typical projects and boiler accessories 


6.Package and delivery 
1. Way of delivery: by Sea or Railway or truck based on needs
2. Shipping model: by normal container and flat rack or bulk cargo based on goods, we can suggest the container
3. Customers specifying freight forwarders or we send bottom shipping price from our forwarder partner for your reference, negotiable shipping methods
4. Packing: nude for boiler main part in nude, accessories in export-use wooden box   


7. Application and customer visit

Q1: How can you get the best price quickly?
(1) We need to know the boiler capacity, the fuel you plan to use and the steam pressure you need, and then we can confirm the boiler model.                (2) Customer needs to provide us your name, email address and company name, and then we will send you price list immediately.And if you use whatsapp, skype or wechat, you can provide us your ID, it will be more convenient 
for our communication.
Q2: Why should you believe our boiler quality?

(1).Strength calculation report with applied materials information;

(2).100%NDT(non-destructive inspection) report of steel plate, tube and welding rod;

(3).100% X-ray inspection(welding seam): ensure the quality of entire boiler;

(4).Hydrostatic test: ensure the standard working pressure and safety;

(5).Third-party inspection report:By Henan Boiler Inspection Institute;

(6).Passed ISO:9001 and SGS certificate.

Henan Yuanda Boiler Co,. Ltd, founded in 1956, is one of the leading enterprises which firstly obtained boiler manufacturing license in China.

Our factory is located in the west industrial agglomeration area of Xihua county,Henan province. R & D center and marketing center are located in the capital city,Zhengzhou, Henan Province.We are high-tech enterprise combining with research, development and sales of heating system and power system. We have B-class boiler manufacturing license(professional for industrial boilers) and D-class pressure vessel manufacturing license, and passed ISO9001,ISO14001 and OHSAS18001.

The factory has beautiful environment with cover area 66000m2 and building area 30000m2. We have employees more than 200 people, including engineers 30 people and senior engineer 10 people. We have advanced equipment, with 430 sets of main production equipment and 30 sets of testing equipment.

We have our own R&D team and cooperate with famous high-tech research institutes at the same time , such as Beijing "Zhiguang" boiler institute,Harbin Institute of Technology and Xi'an Jiaotong University, which ensures our product and technology are in the forefront of technology and science. Till now, we have got more than 10  boiler patents.

With 60 years' experience in boiler design, production, installation and operation, Yuanda Boiler has formed an annual production of 2000 tons of industrial boilers and 5000 tons of pressure vessels. By the end of 2015, the products of Yuanda Boiler have covered China and exported to more than 70 countries in the world.

Our product series includes more than 150 kinds. The main products are:

(1) DZL coal fired steam boiler/hot water boiler(1-20ton/h;0.7-14MW)

(2) DZH wood fired steam boiler/hot water boiler(1-6ton/h;0.7-4.2MW)

(3) SZL biomass/solid fired steam boiler/hot water boiler (1-20ton/h;0.7-14MW)

(4) WNS series gas/oil fired steam boiler(0.5-20ton/h;0.35-14MW)

(5) WNS series gas condensing boiler(1-10ton/h)

(6) YY(Q)W gas /oil fired thermal oil boiler(100,000kcal-12,000,000kcal)

Yuanda Boiler has been committed to improving the efficiency and safety of boilers  to provide safe, energy saving and environmental friendly products.

Our business philosophy:Quality, Sincerity and Creditable;

Our vision: Be century enterprise,create international brand;

Our mission:Create more value for customer, create more benefit for employees and bear more responsibility for society.

Yuanda Boiler welcome you to our factory!

Dear friend,

Thanks  for your time for scaning our products.

For your boiler requirements, pls directly contact we Yuanda Boiler. We have been designing, engineering, manufacturing and serving a complete line of  industrial boilers, including gas,oil, coal, biomass,solid fuel steam boiler/hot water boiler and thermal oil boiler since 1956, for thousands of satisfied customers from more than 50 countries. 

We need the following details to confirm the boiler model:

1. Boiler capacity

2. Pressure

3. Fuel

4. Application

After confirming these questions, we will email you our product specifications, price list, boiler room drawing and installation drawing.  

We also warmly welcome you to visit our factory. Waiting for your email^-^ 

Thanks&Best regards,

Mandy He