Hot Water Boiler with Wood Waste as Fuel

Hot Water Boiler with Wood Waste as Fuel

  • This system is safe and reliable, and features energy and capital saving, coolant and water saving, and low running cost.
  • It has wide usage, high thermal efficiency, generates zero pollution and keeps temperature stable.
  • The system features hot water circulating system and automatic screw transporting system.
  • Description

Product Description

XNH wood thermal modified system heated by hot-oil or electricity is independently developed by Institute of Drying Technology of Nanjing Forestry University and Jiangyin XINAN Drying Equipment Co., Ltd based on careful study of existing high temperature heat treated equipment abroad. XNH wood thermal modified system has two structures: all-aluminum assembled kiln and carbon steel and stainless steel composite cylinder.

In order to solve the problem of residue disposal, XINAN developed hot water-heating system using wood residue as fuel to supply heat for wood drying, paint drying, workshop heating, etc. This system is safe and reliable, and features energy and capital saving, coolant and water saving, and low running cost. It has wide usage, high thermal efficiency, generates zero pollution and keeps temperature stable.

Power Saving

The hot water that circulate in the airtight system generate nearly zero waste, and no steam and hot water are wasted. The system can save 20-40% of fuel than the steam heating system.

Safe and Reliable

The condition in the kiln is easily controlled, as the heat is precisely controlled and temperature of the drying medium is stable. The hot water system is at normal atmosphere. If water leaks out, the whole volume is almost of no change. Thus the system is very safe and reliable and has no danger to explode.

Capital Saving

The cost of equipment and fixing is low because the structure of hot water boiler is simpler than that of steam boiler. The system saves coal as it uses wood waste as fuel. Hot water is used repeatedly so it saves water and cost of running the system. The boiler is horizontal and has double-running route, gas and fired tube. The gas from the boiler has no sulfur because of efficient dust remover. It is highly efficient and environmental friendly.

Hot Water Circulating System

The heated water is purged from boiler to the heating coil, and comes back after heat exchanging. The general tube is in charge of dispatching heat when several kilns need to be hated simultaneously. When none of them needs be to heated, the valve on the bypass pipe is opened automatically and the hot water comes back to the boiler directly.  The Inflation tank is placed in the boiler. The problem of inflation of water can be solved through changes of water level.

The Automatic Screw Transporting System

The central dust removing system may manually move the wood waste to the large volume silo. The feeding speed can be adjusted evenly sending the waste to the boiler to ensure complete combustion. The large pieces of waste can be putted into the burning chamber through the boiler door by hand.
Hot Water Boiler with Wood Waste as Fuel flow chart

Types of Hot Water Boiler

Hot water boiler
Capacity of wood
can be dried (m3)
Thermal power
 (MW/h)
CDZG 0.35-95/70-M        60–100         0.35
CDZG 0.70-95/70-M        150–200         0.70
CDZG 1.05-95/70-M        200–300         1.05
CDZG 1.40-95/70-M        300–400         1.40
CDZG 2.10-95/70-M         400–600          2.10
CDZG 2.80-95/70-M         600–800          2.80