85% Thermal Efficiency Coal and Wood Fired Steam Boiler for Feed Mill

Automatic Moving Grate Coal Fired Steam Boiler is horizontal single-drum shell boiler with water-fire tubes. It has chain grate as burning device, upper-in-and-upper-out style natural water circulation with ejection for hot water boiler of this series, the right and left side of furnace as radiant heating surface, two wings of furnace and threaded smoke tubes as convection heating surface and three-dimensional shield shell. Furnace is divided by Smoke baffle wall into combustion chamber (firebox) at front and re-burning chamber at back.

1.Model:DZL Chain Grate Wood Biomass Coal Fired Steam Boiler
2.Capacity:1 ton/h to 20 ton/h
3.Design pressure: 1.0Mpa(10bar/10kg/145psi),  1.25Mpa(13bar/13kg/180psi),  
1.6Mpa(16bar/16kg/232psi), 2.5Mpa(25bar/25kg/362psi),
4.Stem temperature:184ºC,194ºC,205ºC,226ºC,etc
5.Design fuel:coal,biomass,palm oil shell,wood chips,biomass pellet,firewood, cashew nut, rice husk,solid fuel,et

6.Application:industrial production and processing

Sush as: Medicine, chemical, light industry, textile, building material, cultivation, food and beverage, plastic foam, printing, dyeing and washing, rubber processing, paper products,wood processing, hotel, clothing and leather manufacturer etc.
Biomass Fired Boiler Burning process
Fuel falls from coal hopper onto the front of chain grate, moves along with the chain grate and will be preheated, dried, ignited, burned out. Slag will be discharged by slag remover(eliminator) at any time. Herring bone arch is adopted to improve igniting condition. Smoke forms between front and back arches vortex, completely mix with air, burns out and then goes after each other through smoke flue at two wings, front smoke box, threaded smoke tubes, cast iron economizer(for hot water boiler no cast iron economizer), dust remover, draft fan and will be emitted through chimney.

(1) Stable operation, convenient adjustment and sufficient output. Has a certain overload capacity.
(2) Threaded smoke tube is used to enhance heat transfer, which improves the heat transfer coefficient and thermal efficiency. Because the flue gas has a disturbing effect in the tube, it is not easy to accumulate dust in the smoke tube, which plays a role of self-cleaning.
(3) In the furnace, a high-efficiency and energy-saving furnace arch made of integrally cast heat-resistant concrete is used to improve the coal ignition conditions, and an independent air chamber is used to achieve reasonable air distribution, so that an aerodynamic field conducive to combustion is formed in the furnace. Expand the adaptability of coal types.
(4) The arch of the boiler and the outlet smoke window have a certain effect of dust removal. The original dust concentration of the boiler is controlled below the standard, which ensures that the smoke and dust emission of the boiler meets the national environmental protection regulations.
(5) The secondary air is arranged at the throat of the furnace arch, which can effectively organize the volatile matter in the fuel to mix with the air, promote the full combustion of the volatile matter in the furnace, and improve the fuel burnout efficiency.

DZL series wood fired steam boilers are widely used in food factory, drinking factory, juice factory, sugar refinery, tire factory, soap factory, cement production, concrete production, paper-making, brick-making, carton plant, chemical fertilizer plant, feed mill, knit mill, tissue mill, textile mill, palm oil factory, gloves factory, alcohol plant, chicken processing plant, instant noodle plant, medical and chemical industries, etc.

1.What is the size of furnace door and blower hopper?