DZL Series Coal/Biomass Hot Water Boiler

DZL series hot water boiler

Boiler Capacity:1.4-7 MW

Outlet Temperature: 95/70℃,115/70℃,130/70℃

Available Fuel: Bituminous coal, lean coal, anthracite, biomass molding granules, wood chip, corn cob, palm shell

Application Scale: Heating, hotels, schools, hospitals

Product Introduction:DZL series hot water boiler is composed of body, chain grate, front arch, back arch, light furnace wall, steel frame and insulation layer, etc. The body is composed of a pot shell, a smoke box, a water-wall tube, a descending tube and a lower collection box on both sides. The tube plate adopts a fully welded structure.

DZL Series Hot Water Boiler Description

Coal/biomass fired hot water boiler is horizontal single drum three return fire and water tube boiler, vertical layout of furnace tube wall light on both sides and airfoil flue, drum inside decorate a group of pipe, boiler drum, induced draft fan with mechanical ventilation, USES the compact hole grate combustion equipment, especially suitable for combustion of biomass granule. The fuel is automatically fed by the feeder. After burning, the flame passes through the back wall to the embers chamber, enters the airfoil flue upward, and then passes through the threaded smoke pipe of the front smoke box, and then through the energy saver (optional), air preheater (optional), and dust collector, and then is pumped to the chimney by the induced draft fan and discharged into the atmosphere.

DZL series of hot water boilers are arranged on both sides of the water wall to form a furnace and convection flue, the drum is arranged with a single return thread pipe, the end of the cast iron economizer. The front arch and back arch of water cooling are used in the furnace. The front arch is stepped and the rear arch is herringbone, making the arch coverage rate close to 85%, which is conducive to the burning of bituminous coal. Mechanical combustion is realized by using large – block chain grate. With drum induced draft fan for mechanical ventilation, and with slag discharging machine to achieve mechanical slag, control and monitoring instruments are complete.

DZL Series Hot Water Boiler Details

DZL type boiler installation

  • The type of boiler is horizontal quick loading boiler with natural circulation of working medium: The boiler heat exchange system is composed of drum, left and right collecting boxes and water wall. The main heating surface is water wall of furnace chamber, part of drum and convection tube bundle in drum.
  • Advanced design performance: The main heating surface pipe of the boiler is made of seamless steel tube for 20# low and medium pressure boiler, and the drum is made of special steel plate for boiler. The left and right collection boxes are made of seamless steel tubes.
  • Boiler furnace arch is made of refractory concrete. The rear arch is low and long, so it burns well, and the flue flue and side wall tiles are made of refractory sintered bricks. The boiler front wall and back wall are made of general firebrick.
  • Grate air distribution is reasonable, the combustion chamber is large, the applicability of coal is strong. Full combustion. Because the high temperature flue gas first enters the settlement chamber, and then enters the two flue flue and the front smoke box from both sides, the smoke and dust removal effect is good.
  • The water cycle is simple, the structure of the pressure parts is reasonable, under the condition of ensuring the water quality, it can be completely safe operation.
  • Combustion equipment for quick loading grate, combustion equipment in the factory manufacturing installation, transportation to the site after directly installed on the foundation can be. With reasonable structure, compact, low steel consumption, so that the boiler performance, weight, structure size compared with domestic products with the same capacity has obvious advancement.

Coal/Biomass Hot Water Boiler Advantage

Coal biomass fired hot water boiler

  • Menu LCD man-machine interface, touch screen control and dynamic graphic work status display. Users only need to set the working time parameters, choose the continuous/timing working mode, the boiler can run automatically according to the set program.
  • Adopt touch screen man-machine interface and programmable controller, Chinese menu-type man-machine dialogue. Clear and intuitive. Easy to operate and easy to master.
  • The use of tightly close hole grate, suitable for burning biomass particles; Biomass pellets and coal can be used together;
  • The heating area inside the boiler is larger than that of the same size coal-fired boiler, which makes up for the low calorific value of biomass pellet fuel;
  • Car special paint, fiberglass wool packaging. Beautiful and generous, no rust.
  • Advanced design ensures reliable and economical boiler.
  • Threaded smoke pipe, with good thermal scalability, scientific air flow design, uniform temperature field in the furnace, and effectively absorb flame heat, effectively inhibit the generation of NOx.
  • The valve adopts the special valve of hot water boiler, and the product quality is guaranteed.

Boiler Applications

DZL series of hot water boiler is widely used in hospitals, schools, textile mills, garment factories, large supermarket, garment factories, dyeing factory, hotel, dining room, restaurant, food factory, beverage factory, soy products, meat products factory, cannery, brewery, pharmaceutical factory, packaging plant, building materials factory, paint factory, swimming pool and other places of the enterprises and institutions.

DZL Series Hot Water Boiler Product Parameter

* The basic parameter table provided is a reference, but ZOZEN Boiler can tailor the boiler device and system to your specific needs. Note that specifications and descriptions may differ from the actual product, and ZOZEN reserves the right to modify them without notice. For additional specifications, please contact us.

Model Rated thermal power(t/h/MW) Working pressure(MPa) Rated output water temperature(℃) Return water temperature(℃) Maximum transport size(m)
DZL1.4-0.7/95-70-AⅡ 1.4 0.7 95 70 5.7×2.5×3.5
DZL2.8-0.7/95/70-AⅡ 2.8 0.7 95 70 6.3×2.6×3.6