Yong Xing Boiler Group Co.,Ltd |
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9T/H Automatic Brown Coal Fired Steam Boiler Travelling Reciprocating Step Grate
Achieve the following objectives:
1. Ensure the continuity and stability of garbage.
From the beginning of the garbage feeder to the exhaust of the ash
discharge to the whole process of the slag discharge machine,
should ensure the continuity and stability of garbage, and the
height of the garbage layer in each area should be relatively
stable, can not appear accumulation, blocking or a certain area
layer is pulled empty.
2. Reasonable ventilation gap.
Garbage on the grate has uniform moving speed, reasonable
distribution of air required for combustion, prevent local hammer
head, resulting in air short circuit.
3. Excellent material.
Adopt alloy steel material grate, ensure the normal operation under
high temperature, corrosion, easy to wear environment.
4. Flexibility of operation.
When the furnace is empty, manual intervention can be carried out
and the grate is burned.
The advantage of a grate furnace is that it does not require pretreatment of waste.
The technology is mature and widely used in foreign countries. Its
disadvantages are as follows:
1. Furnace row must be heat-resistant, during long-term continuous operation, the thermal stress must remain unchanged, so that the furnace row material requirements, and the processing of the furnace row is complex, because the furnace row needs to rotate, low reliability and high energy consumption constitute its problems.
2. Because of the complex composition of garbage, it is difficult
to keep the common grate moving uniformly in the whole grate and to
burn uniformly and completely.
3. It is difficult for the grate to adapt to refuse incineration
with a wide range of moisture content, because the waste with high
moisture content needs a wide dry area, which makes it difficult
for the waste with high water content to be completely burned.
4. More difficult to control furnace temperature, waste slag at
above 1000 ℃, and 1050-1100 ℃ in the softening and viscous state,
become the special corrosive substance, may be corrosion of furnace
wall, at the same time under high temperature condition Nox
concentration increased.
5. It is difficult to realize large-scale furnace and remove HCI
gas in the furnace. Special equipment and HCI removal equipment
need to be installed in the tail, which increases the investment
cost.
6. It is necessary to set up special sewage treatment facilities
for refractory landfill leachate.
7. The grate furnace is not only complex to manufacture, high cost,
but also large in size and covers a large area.
Data sheet of reciprocating grate stoker
Main technical Parameters of Reciprocating (Stepping) Grate Combustion Device | ||||
Boiler Capacity (t/h) | Active grate area (m2) | Active Width (mm) | Reciprocate Length (mm) | Angle Grate (deg) |
4t/h | 6 | 997 | 6000 | Optional |
6t/h | 7.5 | 997 | 6500 | Optional |
8t/h | 8.9 | 997 | 6500 | Optional |
10t/h | 10.5 | 1197 | 7500 | Optional |
15t/h | 14.6 | 997 | 7000 | Optional |
20t/h | 20.7 | 997 | 7500 | Optional |
25t/h | 24.6 | 997 | 7500 | Optional |
30t/h | 28.6 | 997 | 8000 | Optional |
40t/h | 34.5 | 997 | 7900 | Optional |
60t/h | 48.7 | 997 | 6500 | Optional |
100t/h | 90.7 | 997 | 8500 | Optional |
Applications
Furnace coal fired chain grate stoker can be applied in chemical plant, university, food factory, beverage factory, cannery, textile mills, paper mill, sugar plant, central heating and other industries.