Multi Fuel Fired Steam Boiler

DZL series coal fired boiler is single drum water-fire tube boiler, chain grate type. Water wall tubes at left and right sides of furnace are the radiated heating area. it has two wings at furnace and screw fire tube in the drum are convection heating area. The upper drum, water wall tube and its heads are in symmetrical arrangement mode. This why furnace structure is in reasonable arrangement and high efficiency. This series boiler adopts several environmental protect measures (bag dust collector, double towers desulfurization, etc.) to meet the national emission requirement.This boiler uses the new scientific achievement, such as arch tube plate and corrugated tube, to solve the problem of tube plate flaw and water wall tube explosion, improve the heat transfer efficiency and thermal efficiency, increase the output. The boiler is wide adoptability of different fuels, such as coal, biomass fuel, wood, straw, bagasse, rice husk, coconut shell, etc.

DZL Series Steam Boiler Specification
Remark: This parameter is just for reference, for exact parameter, subject to our drawings.
 
Technical advantages
 1.Wing flue can cool down smoke in high temperature tube sheet, avoid subcooled boiling,  reduce boiler bottom heat load, avoid tube sheet crack, avoid drum deformation.
2.Arch tube plate can Improve tube sheet flexibility, reduce welding seam thermal stress.  remove brace and avoid tube sheet crack.
3.Thread tube can enhance heat transfer,reduce drum size,improve flexibility, reduce welding seam thermal stress.
 
Design characteristics
Soot inertial separation device is set inside boiler and Big volume natural sedimentation chamber is set on the rear arch top. Smoke flow speeds is slow here, some particles in the smoke can be separated out because of gravity. The smoke turns fast at the head of wing flue, and many particles are separated out because of inertia. It lows original emission concentration. The ash in the rear arch can fall on the grate by ash falling hole, then be removed, which decreases secondary pollution. The boiler operates well and turns out that the original emission concentration is less than 2000mg/Nm³. Besides, with the equipped high efficiency dust collector, the boiler emission concentration satisfies national 1-class standard.
The intense radiation furnace arch can form reasonable 'A' style fire to prompt the combustion. Water cooling wall forms furnace upon the grate. It is big enough to burn the coal completely. The reasonable arch arrangement ensures flow speed. Meanwhile, the inside thread smoke tube, high efficient burning device, well-designed arches and high quality insulation materials and other characteristics ensure the boiler thermal efficiency is higher than national standard.
 
 Company information: 
Qingdao Hammer Industries Co.,Ltd is engaged in manufacturing and exporting industrial boiler for more than 20years.such as coal/biomass/oil/gas steam boilers, hot water boilers and thermal oil heaters.Based on such many years experience for manufacturing boilers,Our engineers collected more questions from kinds of our valved domestic and oversea clients,and they improve our boilers day by day. So now Our boilers and accessories can suitable all kind of industrial boilers. Our boiler  manufacturer have  own ISO9001 qualification system. What's more, tehy also got SGS certificate, and CE certificate,even ASME certificate. Our boiler lifespan can reach 20 years.We are dedicated to global market. Nowadays, we have exported boilers to more than twenty countries, such as Europe, Middle East, Southeast Asia, and Africa. During the past years, our company is developing quickly and stably at the annual growth speed of 100%. We adhere to the management principles of quot&quality first, customer first and credit-based" Since the establishment of the company and always do our best to satisfy potential needs of our customers.