2 to 20 Ton Coal Biomass Wood Fired Steam Boiler for Pharmaceutical

2 to 20 Ton Coal Biomass Wood Fired Steam Boiler for Pharmaceutical

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.

Application of 6 tph steam boiler is used in chemistry, plastics, rubber, construction, forestry, concrete steam raising, plate processing, pharmaceutical industry distillation, etc. Compared with the same type of boiler, this series of steam boilers are compact in structure and small in size, saving the capital construction investment of boiler room. The boiler adopts a unique double-deck secondary air design to improve the ignition conditions of biomass fuel, and adopts an independent air chamber to achieve a reasonable air distribution, which forms an aerodynamic field conducive to combustion in the furnace, and makes the combustion temperature high and combustion efficiency high.

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.
Auxiliaries
Feeder: Feeding fuel equally to avoid flashback.
Gearbox: Designing reasonable rotating speed according to the combustion speed to make sure the fuel burning completely.
Cover plates: Cold-rolled pressed plates, strong and elegant.
Inspection door: reasonable manhole and hand hole layout, easy for maintenance. Inspection doors in furnaces for easy access and maintenance.

Product thermal capacity: 2 – 20t/h

Working pressure: 1.0-2.5 MPA(10 bar to 25bar)

Outlet temperature: 170-225℃

Available fuel: Bituminous coal,lean coal,anthracite

Available industries: Heating, chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital

1. 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.

2. 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( (Longitudinal, transversal safety inspection)): ensure the quality of entire boiler;
(4).Hydrostatic test: ensure the standard working pressure and safety;
(5).Third-party inspection report:By Jiangsu Boiler Inspection Institute;
(6).Passed ISO:9001 ,ISO14001,OHASA18001 and ASME(S and U) and A-class boiler certificate.

3. Quality warrantee
The seller guarantee quality of the machines for a period of 12 months from the date of trial run finish, but not to exceed 18 months from date on which the goods leave factory. If any parts (excluding easily damaging parts) are found defective in quality in the first year, the seller should replace free-of-cost.

4.Terms of payment
T/T 30% of total contract value as down payment;
T/T or L/C 70% of total contract value before delivery.

5.Claim
Any claims by the buyers regarding the machines shipped should be filed within 30 days after arrival of machines at the destination specified in the relative B/L and supported by a survey report issued by a surveyor approved by the sellers, otherwise the sellers shall refuse to consider. Claims in respect of matters within responsibility of insurance company and/or shipping company will not be considered by the seller.

6. What is the using life of your boiler?
A:Normally the boiler is designed for 20 years life span, but with right operation and good maintenance,the boiler can be used for 20-25 years.