الوصف
BBD double inlet and double
outlet tube coal mill is the major equipment for direct blow
pulverizing system which is used in the power plant, cement factory
and papermaking factory. This coal mill can continuously work, fast
response and flexibly be operated, the easy-maintain, stable output
and fitness, big storage, low ratio of air to coal, widely used in
different varieties of coal, coal gangue interfused non-disturbing
the normal operation can satisfy with the applicable in grinding
different hardness and high corrosion coal, thus so as to save
purchasing more standby coal mill for unexpected need.
BBD double inlet
and double outlet tube coal mill is equivalent to which the
pulverizing system of tube coal mills are paralleled together to
increase the pulverizing system efficiency.
The raw coal is
carried to the entrances of coal mill at two sides by the
automatical coal feeder and is delivered into the in-rotating tube
by the screw conveyer then the freely dropping and throwing steel
balls inside the tube impact and grind the coal into the fine
powder.
The hot air is
blown into the mill through blowpipe located in the quill shaft at
the two sides of coal mill, the coal grinded will be blown up and
dried, and also be carried by hot air to pass through the annular
interval between the quill shaft and blowpipe and coal conveying
pipe to enter into the separator, then the heavy coarse coal is
separated to the back coal tube and come into the coal pipe where
the coarse coal and raw coal meet, afterwards these coal will be
screw-conveyed back the rotating tube for grinding again, the fine
coal is transmitted into the powder tube system in the top of
separator and delivered to burner nozzle in the boiler.
This series of
tube coal mill adopts asymmetrical operation. The coal can be fed
in one side, and extracted from the other side or two sides, which
can flexible the coal mill operation, especially the coal mill can
be operated freely by option.
BBD Tube coal mill
is comprised of separator, tube, transmission, main bearing,
bellows, screw conveyer, electrics parts, lubricant and other
auxiliary parts.
According to the
arrangement of separator at site the mill has two options of
separated structure or compact structure for customer.
There is also
other configurations with options of hydraulic roof tank, or steel
ball feeder or slow driver and every specifications of steel ball
for customers.
The lubricant
system of this series of is comprised of main bear which is be
lubricated with static and dynamic pressure and gears which is
lubricated with dry oil sprayed.
The feeding level
inside of this type series of mill is controlled by the
micro-computer interlocking through the differential pressure and
electronic ears, and the variation from the boiler load to mill
load leading to changing the coal feeder speed can be achieved the
auto control.
The technology
parameter for the BBD double inlet and double outlet coal mill is
listed as below:
|
Thermal
Value |
********0
kcal/kg |
|
Moisture |
8~*0% (Due to the coal
character, which can reach *0% at special
condition) |
|
Grindable |
*0~*0HGI |
|
Ash
(anhydrous) |
*8~*9% |
|
Feeding
Granularity |
0~*0mm |
|
Output
Granularity |
*5~*5% (**0 mesh screen is
used) |
Figure
The fired double
inlet and outlet coal mill: Inner diameter is ***0,tube length is
***0
Remark: BBD***0
Coal mill
|
Parameter |
|
Item |
Type |
|
BBD |
BBD |
BBD |
BBD |
BBD |
BBD |
BBD |
BBD |
BBD |
|
***6 |
***2 |
***8 |
***4 |
***0 |
***2 |
***6 |
***0 |
***2 |
|
Inner
Diameter（Inside scaleboard）mm |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
|
Tube length
mm |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
|
Double-cone
Separator Diameter mm |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
|
Mill Rotation
r/min |
*0.4 |
*9 |
*8 |
*7 |
*6.6 |
*6.6 |
*6 |
*5.3 |
*5.3 |
|
Motor |
Rate
(kw) |
**0 |
**0 |
**0 |
***0 |
***0 |
***0 |
***0 |
***0 |
***0 |
|
Rotation
r/min |
***0 |
|
Voltage
（v） |
***0 |
|
Steel ball load
(Max) t |
*0 |
*2 |
*8 |
*7 |
*6 |
*8 |
*7 |
**6 |
**7 |
|
Weight（Motor,
Feeder, Steel ball, Valve is not included）t |
　 |
　 |
**9 |
**6.7 |
**5 |
**6.1 |
**2 |
**5 |
**3 |
|
Output
t/h |
The data is
given based on standard coal HGI=*0
H2O=8% (*5% of quantities is passing the **0
mesh screen) |
*3 |
*2 |
*5 |
*3 |
*0 |
*2 |
*9 |
*0 |
**5 |
|
| بلد: |
China |
| نموذج رقم: |
BBD
|
| سعر فوب: |
(قابل للتفاوض)
أحصل على آخر سعر
|
| الموقع: |
China |
| سعر الحد الأدنى للطلب: |
- |
| الحد الأدني للطلب: |
1 Set |
| تفاصيل التغليف: |
As requested |
| موعد التسليم: |
As per the model selected |
| القدرة على التوريد: |
1 Set per Month |
| نوع الدفع: |
T/T, L/C |
| مجموعة المنتج : |
Power Plant
|
