Lower Combustion Solid Fuel Wood Firewood Log Fired Steam Boiler Suppliers

DZL series coal/biomass fired steam boiler realizes almost zero pollution with the use of special dust collector solution (bag dust collector, double towers desulfurization, etc.). This series boiler is single drum horizontal type shell boiler, the combustion equipment is chain grate (small scale flaker is available), has the advantages of feed mechanically and strong adaptability of different fuels. The fuel could be II class bituminous coal, the diameter should be 6-25mm, and ash content should be less than 32.4%. Otherwise, DZL series boiler could also burn biomass fuel, including wood, straw, bagasse, rice husk, coconut shell, cotton seeds, peanut shell, etc

1.Model:DZL chain grate automatic feeding steam boiler 
2.Capacity:1-20ton/h steam
3.Pressure:0.7Mpa(7bar),1.0Mpa(10bar),1.25Mpa(13bar),1.6Mpa(16bar),2.5Mpa(25bar)
4.Steam temperature:174 °c,184 °c,194°c, 204°c,225°c
5.Fuel:coal,biomass,wood pellet
6.Structure:horizontal water-fire tube, single drum
7.Type:we have two types. DZL :Chain grate stoker automatic feeding fuel and removing dregs.
DZH :Manual operate moving grate, needs labour to feed fuel and remove the dregs.

8.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) The arched tube sheet and the threaded smoke tube are used to form the drum, so that the drum is changed from a quasi-steel body to a quasi-elastomeric structure, and the bracing parts in the tube plate area are eliminated, and the stress is reduced. The smoke pipe is changed from two-pass to single-pass, which solves the problem of tube sheet cracks.
(2) Due to the arrangement of the rising pipe row at the bottom of the drum, the dead water area at the bottom of the drum is eliminated, so that the sludge is not easy to deposit, and the high temperature area of the drum can be well cooled, preventing the bulge in the lower part of the boiler shell.
(3) The use of high-efficiency heat transfer threaded smoke pipes achieves enhanced heat transfer effects, achieves the characteristics of rapid boiler heating and pressure rise, and improves the thermal efficiency of the boiler.
(4) The structure is compact, and compared with the same type of boiler, the overall size is small, which saves the investment in the infrastructure of the boiler house.
(5) Stable operation, convenient adjustment and sufficient output. Has a certain overload capacity.
(6) 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.

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?