New high quality middle sized easy to operate bag Type Dust Collector
1. Application
This equipment is for the treatment of high-temperature flue gas.
The treatment system adopts two-grade dust removal. The first grade
adopts high-efficiency dust collector, which is mainly used to treat the
coarse particle produced during melting in aluminum melting furnaces,
and has great cooling effect. The second grade adopts high-efficiency
pulse dust removal bag dust collector, which can filter the dust up to 99.5%,
meeting the national emission standard requirement. The treatment air
volume of the dust removal system is 17000 m3 / h.
Determination of the filter area of the dust collector: the filter wind speed is
1.5m/min, the filter area is 15m2, and the dust collector adopts pulse
anti condensation pulse bag filter.
2. Working Principle
2.1 The dust collector is of anti condensation pulse type dust collector.
2.2 The dust collector is of single row design, with 120 filter bags and
a total filtration area of 15m2.
2.3 The filter bag adopts the standard size of φ 130 × 2000, and the
material is anti condensation polyester needle felt.
2.4 The external filter type is adopted for the dust collector, and the filter
bag of the dust collector is connected with the riffled plate by the spring
expansion ring, forming the separation between the air and the dusty gas.
2.5 The pulse signal is sent to the pulse solenoid valve by the pulse controller,
and the pulse solenoid valve ejects compressed air to make the filter bag
radial deformation and shake off dust.
2.6 There is an access door on the top of the dust collector, which is used
for maintenance and bag change (the maintenance, repair and bag change
of the dust collector can be carried outside the machine, without entering
the inside of the dust collector).
2.7 The electric control cabinet of the dust collector adopts the structure of
sealed door, which is dust-proof, and waterproof.
2.8 In order to prevent the high temperature of flue gas entering the dust
remover, a temperature measuring point is set on the dust remover pipe.
The temperature indicator is installed at the operation point of the furnace
and equipped with an alarm device to remind the operator that the temperature
rise of the dust remover is too high and take fresh air supplement measure to
ensure the safe operation of the whole dust removal system.
2.9 fan selection: according to the design air volume of the system, 1 set of
G4-73-10D boiler induced draft fan is adopted, with single total pressure of
3251-3018pa, air volume of 25566-32083m3 / h, motor of Y150M-4 and
power of 18.5kw.
2.10 system control: according to the process requirements of the system,
a control cabinet is set for the dust collector and temperature control system
to control the pulse dust cleaning system and temperature monitoring of the
dust collector, and the main fan is started by frequency converter.
3. Equipment Features
3.1 Anti condensation pulse bag filter is a kind of unit combined dust removal
equipment with large air volume, low filtering wind speed, good dust removal
effect, high dust removal efficiency, reliable operation, convenient maintenance
and small floor area. Modular production, stable quality.
3.2 Working principle: The dust collector is composed of upper box, middle box,
ash hopper, guide plate, support, filter bag component, injection device, protection
system, control system, etc. The dusty gas enters the ash hopper through the
diversion pipe. Under the guidance of the diversion system of the ash hopper,
the large particle dust directly falls into the ash hopper after separation, and the
rest of the dust enters the filtering area of the middle box with the air flow. The
filtered clean gas is discharged through the upper box and the exhaust pipe
through the filter bag. With the progress of the filtering condition, when the dust
on the surface of the filter bag reaches a certain amount, the dust cleaning control
device will open the electromagnetic pulse valve for injection according to the set
procedure to shake off the dust on the filter bag. The dust falling into the ash
hopper is discharged through the ash discharge valve.
3.3 The filter area and length can be adjusted. The quantity of filter-bag can be
changed to adapt to the needed air volume.
3.4 The anti-condensation pulse bag filter is an external filter. The dust-containing
gas is outside the filter bag while the clean air is inside the filter bag, and the bag
mouth is upward. Start pulse jetting making the bag radial deformation, and
shake off the dust.
3.5 The dust collector adopts the online ash cleaning method.
3.6 The secondary air distribution method is adopted to let the dust-laden air flow into
the filter area through the guide pipe and the air distribution system, which ensures
the uniformity and smoothness of the unit air intake, so as to improve the utilization
ratio of the filter area and the service life of the filter material.
3.7 The filter bag adopts the spring expansion ring type with a good sealing
performance and a fast replacement speed. Open the top cover and replace
the bag by 1-2 people.
3.8 The bag framework adopts a star-shaped structure (10 ribs) with a η-shaped
cold stamping short pipe on the top to ensure the vertical positionof the bag frame
and to protect the safety of the filter bag mouth during injection. It avoids the filter
bag sticking after the dust collector works for a period of time, ensures the smooth
change of the bag, and reduces the damage to the bag in the process of changing the bag.
3.9 The dust collector adopts a removable roof and a platform for maintenance and
escalator, which is convenient for personnel to overhaul, use and manage.
4. Key components
4.1 For the whole dust collector, the filter bag and electromagnetic pulse valve
are the key components.
4.2 The quality of the filter material directly affects the dust removal efficiency of
the dust collector, and the life of the filter bag directly affects the operation cost of
the dust collector. Therefore, the anti condensation polyester needle felt is selected
according to the operation environment and medium conditions of the dust collector.
This filter material is surface filtering material, which can clean the dust thoroughly,
reducing the possibility of dust hardening after dust is distributed on the surface of
the filter bag, and the filter material has a long life. In addition, we have improved
the structure of the dust collector to ensure that the service life of the filter material
is not less than two years.
4.3 The imported diaphragm is selected for the electromagnetic pulse valve, and
the injection pressure is 0.5-0.7mpa. The diaphragm is durable, and its service life
is more than 1 million times, which meets the requirements of efficient operation of
the pulse solenoid valve.
5. Technical Parameter
| No. | Item | Unit | Parameter |
| 1 | Air volume | m3/h | 17000 |
| 3 | Efficiency of dust collection | ％ | ≥99.5 |
| 4 | Total effective filter area | m2 | 15 |
| 5 | Filter speed ( normal operation) | m/min | 1.5 |
| 6 | Filter-bag specification | mm | φ130×2000 |
| 7 | Quantity of filter-bag for dust collector | pc | 120 |
| 8 | Material of filter-bag | polyester needle felt with singeing and pressing | |
| 9 | Inlet gas temperature | ≦100℃ | |
| 10 | Equipment resistance | Pa | 1200 |
| 11 | Pulse valve quantity | pc | 12 |
6.Post Sales Service
Product warranty period: 13 months from the date of shipment. The seller is responsible
for repairing the equipment or replacing the broken parts if faults are caused by manufacture
defects, but damages caused by faulty operation by the workers are to be repaired by the buyer
itself or by the seller at a certain rate of charge. (Easy-worn parts, and natural consumption
of high temperature parts are not included in the warranty.)
