PPC Series Cement Factory Pulse Jet Bag Filter Dust Collection
Equipment
Pulse Jet Bag Filter Introduction
Bag type dust collector is a kind of dry dust filtering equipment,
which is mainly used for flue gas purification, dust treatment
(non-fibrous) and material recovery in industries such as cement,
metallurgy, building materials, machinery, chemical industry and
electric power. The core part of the entire dust removal work is a
series of filter bags installed inside the box. The filter bags are
made of woven filter cloth or non-woven felt. When the
dust-containing gas enters the dust collector through the air
inlet, the fiber fabric is filtered. The particles in the gas are
filtered under the action, and the dust with large and specific
gravity settles down due to its own gravity and falls into the ash
hopper. The fine dust particles are blocked when the gas passes
through the filter bag, so that the gas is purified and Prescribed
emission standards.
Selection Basis of Bag Filter
For the dusty gas produced under different production conditions, a
suitable type of dust collector should be used for purification
treatment, so as to achieve the best purification effect. If the
equipment is too large, it will cause unnecessary waste. Small,
will affect production and fail to meet environmental protection
requirements. The main selection basis is as follows:
1. Temperature of dusty gas
The temperature of the dusty gas is the main basis for the
selection of the dust collector. If the intake air temperature is
different from the design temperature, it will cause serious
consequences. When the gas temperature is too high, the filter bag
will be burned and deformed. For high-temperature gas, it must be
cooled below the temperature that the filter material can
withstand. Condensation will occur when the gas temperature is too
low, so the gas temperature must be kept above 20 ° C.
2. Handling air volume
The air volume is the volume of gas that the dust removal equipment
can purify in a unit time. Units are cubic meters per hour m3 / h
or standard cubic meters Nm3 / h per hour. This is one of the main
reasons for the selection of dust collectors.
3.Inlet dust concentration
It refers to the dust concentration in the gas at the air inlet,
which is determined by the production process of the dust point. In
the selection, it is an important factor behind the air volume. The
unit is g / m3 or g / Nm3. When the dust concentration at the inlet
is too large, consideration should be given to the installation of
pre-dust removal equipment.
Pulse Jet Bag Filter Specifications:
| Model | PPC128-6 | PPC128-9 | PPC128-10 | PPC128-2×6 | PPC128-2×7 | PPC128-2×8 |
|
| Volume(m³/h) | 67300 | 100900 | 112100 | 134600 | 157000 | 179400 |
| Air speed(m/min) | 1.2-2.0(Speed varies at different dust points) |
| Filtration area(㎡) | 935 | 1402 | 1558 | 1869 | 2181 | 2492 |
| Net filtration area(㎡) | 779 | 1246 | 1402 | 1713 | 2025 | 2336 |
| No. of bag(pc) | 768 | 1152 | 1280 | 1536 | 1792 | 2084 |
| Resistance(Pa) | 1470-1770 |
| Minus pressure(Pa) | 7000 |
| Dust content at inlet(g/m³) | ＜1300 |
| Dust emission(g/m³) | ≤0.1 |
| Compressed air | Pressure(Pa) | (5-7)×105 |
|
| Air consumption | 3.6 | 5.4 | 6 | 7 | 8.3 | 9.5 |
| (m³/min) |
| Pulse valve | Qty(pc) | 12 | 18 | 20 | 24 | 28 | 32 |
| Size | 2-1/2″ |
| Elevation valve | Qty(pc) | 6 | 9 | 10 | 12 | 14 | 16 |
| Size(mm) | Valve Φ725,air tank Φ100 |
| Discharge device YJD-26 | Outlet 300×300mm Capacity 24m³/h | Double flap valve 305×915 |
| Screw conveyor | Model | Dia. Φ300,capacity 21m³/h | N/A |
| Gearbox | XWD2.2-5-1/43,power 2.2Kw | N/A |
| Air slide | Air slide 250mm,flow rate 2.0m³/㎡, Pressure 6860pa,If the dust
content exceeds 700g/m³ at inlet, bag filter with big screw
conveyor should be considered. |
| Bag size and material | Dia.×lengthΦ130×3050,Gross weight of polyethylene felt
450g/㎡,temperature 120℃ |
| Insulation area(㎡) | 125 | 196 | 205 | 223 | 247 | 262 |
| Total weight(approx.)(Kg) | 24120 | 31680 | 34680 | 43920 | 52680 | 60000 |
| Note 1: Net filtration area means the area of one chamber during
dust removing. |
| 2: The compressed air consumption is based on supply of compressed
air pipe from an air compression station. The consumption should be
considered to be 1.3 times more if the supply is provided by an
independent air compressor. |
4.Dust concentration at the outlet
It refers to the discharge concentration of the dust collector,
which is the same as the expression method of the dust
concentration at the inlet. It is mainly determined by the local
environmental protection emission requirements and user
requirements. The exhaust gas concentration after the purification
treatment of the dust collector can generally reach 50g / Nm3.
5.Pressure loss
It refers to the pressure drop, or resistance, of the gas from the
inlet to the outlet of the dust collector.
6.Operating pressure
The operating pressure of the bag type dust collector is determined
based on the static pressure value of the micro fan before and
after the dust collector and its installation position, and it is
also the design pressure value of the bag type dust collector.
7.Filter speed
Filtration speed is an important factor in the design and selection
of a bag filter. Its definition is the speed of the filtered gas
when passing through the filter material, or the ratio of the air
volume of the filter material to the area of the filter material.
The unit is m / min.
