What is a chain grate boiler?
Chain-grate boileris a type of boiler that can burn quite a lot of fuels with different sizes such as: coal bran, lump coal, wood, firewood, rice husk…
Basically, the main type of chain grate boiler boiler is a furnace with a medium or small capacity. Like many other types of boilers, this type of furnace is also composed of drums and associated components. From there, it is possible to transfer water into the boiler and convert it to steam for application in different operations.
How does a chain grate boiler work?
With chain grate boilers, you can use coal as fuel or organic solids. It is transferred onto the burner with a predetermined thickness. Then the fuel is moved and burned into the combustion chamber. Then the fuel will receive radiant heat from the outside and be dried. The combustible substances will form ash and remove the ash. Depending on the type of furnace, the thickness of the burning fuel layer will also be different.
For example, bran coal, coal will have a thickness of about 150-200mm, with brown coal will be 200-300mm, peat will be 700-1000mm… Usually the air supplied into the fire chamber will be the supply wind level 1 from the bottom and level 2 wind above the fuel. These parameters have been calculated appropriately to ensure furnace operation.
Features of chain grate boiler:
– Chain grate fire with a combination of water pipes, fire pipes, external combustion chambers, natural circulation.
– Pressure: 8 – 25 bar, temperature 165 – 250 degrees Celsius
– Boiler efficiency: 85% (+-2).
– Noise level: <85 dB (1 meter away from the furnace house).
– Fuel: Charcoal, minced firewood, compressed sawdust, cashew residue, pellets…
– Power source: 380 V – 3 phase – 50 Hp.
– Manufacturing standards: TCVN 6413 – 1998 and TCVN 7704-2007.
The main equipment in the chain grate boiler system:
Exhaust heat utilization units such as water heaters, air dryers
Exhaust smoke treatment units such as dust filter cyclone, cloth bag dust filter, dust suppression tower, dust suppression tank.
Feeding system: Conveyor belt, screw conveyor, intermediate material hopper.
Boiler control system
Steam pipeline system
So which industries need to use chain grate boilers?
Chain grate boilers are widely used in manufacturing industries such as: Food, textiles, dyeing, plastics, rubber, animal feed, sugar, paper and packaging….
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Currently in Vietnam, there are not many units that can produce good boilers, KS – Boiler is proud to be a reputable company and is trusted by people in the world as well as customers. You can refer here before choosing to install the boiler. You can refer here before choosing to install the boiler.
Industrial boilers are equipment that have many applications and are widely used in industrial parks and food technology factories. Hopefully, the article has helped you better understand the boiler overview.
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