Working Principle:
In the biomass briquette plant, when wet raw material material is input into the hopper of dryer, the hot air stove(boiler) generates hot air, hot air mixed with wet sawdust and then sucked into the pipes by the exhaust blower(fan) , flowing and go though the curving pipes and drying chamber of dryer, thus the wet sawdust is dried, and the dried sawdust is discharged from the outlet with air lock.
In the biomass briquette plant, this type of dryer is suitable for drying heat sensitive material which is light and small like sawdust, rice shell, milled stalks etc. Generally wet material can be dried in a few minutes.Comparing with rotary dryer, it has the advantages of low energy comsumption, low cost, it’s in simple design but have good effect and high efficiency as well.
In the biomass briquette plant ,the feeding of fuel for dryer boiler is by manual.The fuel can be wood waste like tree branch, tree trimmings, wood chips, coal or any waste that can burn (But Gas or Oil is impossible for the boiler now).
(1) Dryer model HGJ-I, HGJ-II, HGJ-III for lower moisture content 12-25%
In the biomass briquette plant ,the moisture reducing rate of the dryer HGJ-I, HGJ-II, HGJ-III is 8-12%. This series of dryer is equipped with one hot air boiler, suitable for drying raw material with moisture content less than 20-25% for biomass briquetting.If the moisture content of the raw material for biomass briquetting is higher than that, it will need two or three times to dry to achieve the requested moisture content for biomass briquetting plant.
| Model | HGJ-I | HGJ-II | HGJ-III |
| Capacity(Kg/hour) | 200-250KG | 400-500KG | 500-700KG |
| Size of Input Material(Diameter) |
< 3mm & < 5mm | < 3mm & < 5mm | < 3mm & < 5mm |
| Temperature of Hot Air | 180°C~250°C | 180°C~250°C | 180°C~250°C |
| Consumption of Wood Waste | 15-20 kg/h | 25-30kg/h | 30-35kg/h |
| Power(Centrifugal Fan+Air Lock) |
4kw+1.5kw | 5.5kw+1.5kw | 7.5kw+1.5kw |
| Net/Gross Weight | 700/800kg | 1200/1300kg | 1800/1900kg |
| Dimension(m) | 6×2×3.65m | 9×2×3.65m | 11×2×3.65m |
(2) Twin boiler dryer model NHGJ-I, NHGJ-II, NHGJ-III for higher moisture content 20-50%
In the biomass briquette plant ,twin boiler dryer is a newly developed dryer with two hot air boilers, it is suitable for drying raw material with moisture content of 20% -50% for biomass briquetting, it can reduce moisture from 20%-50% to 8-12% for biomass briquetting only one passage or one time. PS: For raw material of moisture 20-35%, only fire and use the first boiler, no need to use the both.
| Model | NHGJ-I | NHGJ-II | NHGJ-III |
| Capacity(Kg/hour) | 200-250KG | 400-500KG | 500-700KG |
| Size of Input Material(Diameter) |
< 3mm & < 5mm | < 3mm & < 5mm | < 3mm & < 5mm |
| Temperature of Hot Air | 180°C~250°C | 180°C~250°C | 180°C~250°C |
| Consumption of Wood Waste | 40 kg/h | 60kg/h | 100kg/h |
| Moister content max % | 20-50% | 20-50% | 20-50% |
| Moisture of material after drying | 8-12% | 8-12% | 8-12% |
| Power(Centrifugal Fan+Air Lock) |
5.5kw+1.5kw | 7.5kw+0.75kw | 11kw+0.75kw |
| Net/Gross Weight | 700/800kg | 1200/1300kg | 1800/1900kg |
| Overall dimension(L*W*H) | 9m*2m*4m | 9m*2.4m*4m | 9m*2.4m*4m |
| Packing size | 9.2 M3(2 cases) | 14 M3(3 cases) | 14 M3(3 cases) |