Description
DZH coal fired moving grate boiler is single drum boiler with both
water tube and fire tube, the combustion equipment is moving grate.
Water wall tubes at left and right sides of furnace are the
radiated heating area. The two wings at furnace and spirally
corrugated tubes in the drum are convection heating area. This coal
fired moving grate boiler uses the upper drum, water wall tube and
head are in symmetrical arrangement mode. The furnace structure is
in reasonable arrangement to achieve high efficiency. This moving
grate boiler adopts several environmental protect measures (bag
dust collector, double towers desulfurization, etc.) to meet the
national emission requirement.
This coal fired moving grate boiler uses the new scientific
achievement, such as arch tube plate, spirally corrugated tube to
solve the problem of low thermal efficiency, tube plate cracking,
drum bulging, insufficient output, and environmental pollution.
Sitong Boiler has a mature R&D and design team, could customize
the boilers based on customers requirement.
Performance Advantages
1. High thermal efficiency
1)The spirally corrugated tube strengthen the heat transfer,
improve thermal efficiency. The flue gas has the foundation of
disturbance, avoid ash depositing in tube.
2)The furnace wall was poured entirely by the heat-resistance
concrete and high-temperature-resistance refractory brick,
excellent leakproofness, no air leakage. Moverover, the boiler
shell use aluminium silicate board for heat preservation, low heat
loss.
3) Equipped with economizer, make full use of the heat of flue gas,
decrease the exhaust smoke temperature, increase thermal
efficiency.
2. Avoid bulging
The riser tube bundle under the drum, remove the dead water region
at the bottom of drum, sludge is not easy for depositing, the high
temperature area of drum has better cooling, prevent bulging.
3. Avoid tube plate cracking
1) Arched tube plate and spirally corrugated tube, change the
quasi-steel body into quasi-elastic body structure, reduce
stress.
2) Gas duct in drum on both sides, the smoke gas could enter into
the front smoke chamber smoothly, the temperature of tube plate is
lower than **0℃, avoid cracking leaded by high temperature.
4. Sufficient output
Horizontal type three pass structure and large furnace diameter
boiler drum.
5. Environmental protection
1) The splayed wall and smoke outlet have the function of dust
removal, decrease the concentration of smoke emission.
2) The moving grate boiler adopts several environmental protect
measures (bag dust collector, double towers desulfurization, etc.)
to meet the national emission requirement.
Boiler Application
Coal fired steam boiler is widely used for industrial production,
and the hot water boiler could be used for hotel, school, laundry,
gym, farm, etc.
1) Textile industry - dyeing machine, drying rooms, high
temperature machine, resin setting machine.
2) Food industry - cooking, drying, vegetable oil refining.
3) Chemical industry - oil chemistry, polymer industry, reaction
tanks, distillation, concentration.
4) Plastics industry - plastics fired, extruded shape.
5) Rubber industry - hot press, hot extent, extrusion,
vulcanization molding, injection, etc.
6) Paper industry - drying, corrugated paper processing, calender,
glue roller.
7) Wood industry - hot processing, heat setting.
8) Hotel - cooking, bathing, laundry, central heating, etc.
