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Stand-alone bag filter

Source: Unknown Author: admin Name: Time: 2018-04-24
Stand-alone bag filter

The bag filter is a dry dust filter device. It is suitable for trapping fine, dry, non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, and the dust-containing gas is filtered by the filtering effect of the fiber fabric. When the dust-containing gas enters the bag type dust collector, the dust with large particles and specific gravity is caused by gravity. The action settles down and falls into the ash hopper. When the gas containing the finer dust passes through the filter material, the dust is blocked and the gas is purified.

working principle:

Filter type dust collector refers to the equipment that realizes gas-solid separation when the dust particles in the air stream pass through the filter layer, and the dust particles in the air flow are intercepted and collected by the filter layer.

The filter type dust removal device includes a bag type dust collector and a particle layer dust collector. The former usually uses a filter bag made of organic fiber or inorganic fiber fabric as the filter layer, while the latter filter layer mostly uses particles of different particle sizes, such as quartz sand, River sand, ceramsite, slag and other components. With the powder repeatedly attached to the outer surface of the filter bag, the powder layer continues to thicken, and the resistance value of the bag filter also increases; the pulse valve diaphragm issues a command, the pulse valve opens when flooded from left to right, and the pressure in the high-pressure air bag is compressed. The air is vented. If there is no dust or it is small enough, mechanical dust removal will stop.

Product structure:

The main structure of the bag type dust collector is mainly composed of an upper box body, a middle box body, a lower box body (ash hopper), a ash cleaning system and an ash discharge mechanism.

The performance of the bag filter is not only the correct choice of filter bag materials, but also the ash cleaning system plays a decisive role in the bag filter. For this reason, the ash cleaning method is one of the characteristics to distinguish the bag type dust collector, and it is also an important part in the operation of the bag type dust collector.

Structure type:

1. According to the shape of the filter bag, it is divided into: flat bag (trapezoid and flat) and round bag (cylindrical).

2. According to the way of entering and exiting the wind, it is divided into: down-in and up-out and up-in and down-out and DC (only limited to flat flat bags).

3. According to the filtering method of the bag, it is divided into external filtering type and internal filtering type.

The fiber used for filter material includes cotton fiber, wool fiber, synthetic fiber and glass fiber. The filter material woven with different fibers has different properties. Commonly used filter materials are 208 or 901 polyester wheel fleece. The operating temperature generally does not exceed 120 C. The glass fiber filter bag treated with silicone resin generally does not exceed 250 C. Cotton wool fabrics are generally suitable for non-corrosive; Dust-containing gas below 80-90 ℃.

product advantages:

高 Dust removal efficiency is high, generally above 99%, and the dust concentration of the gas at the outlet of the dust collector is within tens of mg / m3, which has a high classification efficiency for fine dust with a submicron particle size.

⑵The range of air volume to be treated is wide, ranging from 1 minute to several m3 for small ones and tens of thousands of m3 for 1 minute, which can be used for dust removal from flue gas in industrial furnaces and reduce the emission of atmospheric pollutants.

⑶ Simple structure and convenient maintenance operation.

⑷On the premise of ensuring the same high dust removal efficiency, the cost is lower than that of the electric dust collector.

⑸When using high-temperature-resistant filter materials such as glass fiber, polytetrafluoroethylene, and P84, it can operate under high temperature conditions above 200 C.

⑹Insensitive to dust characteristics, not affected by dust and resistance.

Product Maintenance:

1. Always check the operation of control valves, pulse valves and timers.

The failure of the rubber diaphragm of the pulse valve is a common failure of the bag filter, which directly affects the dust removal effect. This equipment belongs to the external filter type, and the bag contains a skeleton. It is necessary to check whether the parts holding the filter bag are loose and the tension of the filter bag is appropriate. Whether the support frame is smooth to prevent abrasion of the filter bag. For cleaning, compressed air is used. Therefore, it is required to remove oil mist and water droplets, and the oil-water separator must be cleaned frequently to prevent the failure of the movement mechanism and the blockage of the filter bag.

2. Whether the air volume and pressure and temperature of each test point are consistent with the design.

3. The installation condition of the filter bag, whether there are bag dropping, loosening and abrasion after use, can be judged by visual inspection of the chimney emission after operation.

4.Prevent condensation

During use, it is necessary to prevent the gas from cooling below the dew point in the bag room, especially when using a bag filter under negative pressure. Because the shell often has air leaking in, the gas temperature in the bag chamber is lower than the dew point, the filter bag will be damp, and the dust will not stick loosely, but will stick to the filter bag, clogging the fabric eyelets, causing cleanliness. The ash failure causes the pressure drop of the dust collector to be too large to continue operation, and some paste bags cannot be dusted.

To prevent condensation, the temperature of the gas in the dust collector and its system must be kept at 25 to 35 C above the dew point (such as the dew point of a kiln-mill integrated machine of 58 C and the operating temperature should be above 90 C). To ensure the good use of filter bags.

market situation:

China has a huge demand for bag dust collectors. Dust removal filters, especially high-temperature-resistant fiber filters, have broad market development prospects. China's "Twelfth Five-Year Plan" has put forward higher requirements for environmental protection. Water, gas, sound, and slag will all be more applied to filter materials, and the market prospect of the filter material industry is promising. Among them, in the field of soot and dust control, because of the high efficiency of dust removal, bag dust removal will not cause secondary pollution, and it is easy to recycle dry materials. It is widely used at home and abroad, accounting for 80% of the dust removal equipment used. The iron and steel industry is one of the main sources of air pollution. China's steel output has exceeded 300 million tons. According to the situation of Baosteel's application of bag dust removal, 21 million square meters are required. After conversion, 6 million square meters of filter material are replaced every year.

Technical parameters :

Technical parameters of HMC single bag filter :

Model parameters
HMC-32
HMC-48
HMC-64
HMC-80
HMC-96
HMC-112
Air volume (m3 h)
1500-2100
2100-3200
2900-4300
4000-6000
5200-7000
6000-9000
Filtration area (m2)
twenty four
36
48
60
72
84
Filtering wind speed (m / min)
1.0-1.5
1.0-1.5
1.0-1.5
1.1-1.7
1.2-1.7
1.2--1.8
Number of filter bags (strips)
32
48
64
80
96
112
Inlet gas temperature (℃)
≤120
Equipment resistance (Pa)
≤1200
Inlet dust concentration (g / m3)
<200
Dust concentration at the outlet (mg / m3)
≤50
Air supply pressure for ash cleaning (MPa)
0.4 ~ 0.6
Air consumption for dust cleaning (m3 / min)
0.10
0.14
0.20
0.24
0.29
0.34
Withstand negative pressure (Pa)
5000
Number of pulse valves
4
6
8
10
12
14
Fan motor power (KW)
1.5
3.0
3.0
5.5
5.5
7.5
Weight (Kg)
A type
1350
1620
1850
2360
2800
3200
Type B
1220
1470
1670
2150
2540
2880

Air box pulse bag type dust collector technical parameters :

model
Handling air volume
(m3 / h)
Filter bag wind speed
(m / min)
Filtration area
(m2)
Number of filter bags
(Number)
Air consumption
(m3 / min)
resistance
(Pa)
Dust concentration
(g / m3)
Insulation level
Product (m2)
weight
(t)
32-3
6900
1.2-2.0
93
96
0.27
1470-
1770
<1000
26.5
2.4
32-4
8930
124
128
0.37
34
3.4
32-5
11160
155
160
0.46
41
4.4
32-6
13390
186
192
0.55
48.5
5.4
64-4
17800
248
256
1.2
70
6.9
64-5
22300
310
320
1.5
94
8.8
64-6
26700
372
384
1.8
118
9.7
64-7
31200
434
448
2.1
142
11.8
64-8
35700
496
512
2.4
166
12.5
96-4
26800
1.2-2.0
372
384
1.2
1470-
1770
<1300
110
8.7
96-5
33400
465
480
1.5
120
11.8
96-6
40100
557
576
1.8
130
13.5
96-7
46800
650
672
2.1
140
15.2
96-8
53510
744
768
2.4
150
18.0
96-9
60100
836
864
2.7
160
19.6
96-2 5
66900
929
960
3.0
175
21.0
96-2 6
80700
1121
1152
3.4
210
25.2
96-2 7
94100
1308
1344
4.2
245
29.4
96-2 8
107600
1494
1536
4.8
280
33.6
96-2 9
121000
168
1728
5.4
315
37.8
96-2 10
134500
1868
1920
6.0
350
42.0
128-6
67300
1.2-2.0
935
768
3.6
1470-
1770
<1300
125
20.1
128-9
100900
1402
1152
5.4
196
26.4
128-10
112100
1558
1280
6.0
2053
28.9
128-2 6
34600
1869
1536
7.0
323
36.6
128-2 7
157000
2181
1792
8.3
247
43.9
128-2 8
179400
2492
2048
9.5
262
50.0
128-2 9
201900
2804
2304
10.7
277
55.4
128-2 10
224300
3115
2560
12
292
60.0
128-2 11
247600
3427
2816
13.1
307
65.4
128-2 12
269100
3728
3072
14.3
322
72.0
128-2 13
291600
4050
3328
15.5
337
78.0
128-2 14
314000
4361
3584
16.7
352
84.0

Technical parameters of HCMC low pressure long bag pulse bag filter

model
Air volume (m3)
Total filtration area (㎡)
Number of rooms
Wind speed (m / min)
Filter bag specifications (φ L)
Ash cleaning pressure (Mpa)
YLC84-5
61500 ~ 73800
1025
5
1 ~ 1.2
130 * 6000
0.3-0.4
YLC 84-6
61200 ~ 79344
1230
6
YLC 84-7
77160 ~ 92592
1435
7
YLC 84-8
98400 ~ 118080
1640
8
YLC 84-2 4
98400 ~ 118080
1640
8
YLC 84-2 5
123000 ~ 147600
2050
10
YLC 84-2 6
147600 ~ 165888
2460
12
YLC 84-2 7
172200 ~ 186624
2870
14
YLC 84-2 8
196800 ~ 207360
3280
16
YLC 84-2 9
221400 ~ 265680
3690
18
YLC 84-2 10
246000 ~ 295200
4100
20
YLC 160-2 * 4
288000 ~ 345600
3856
8
160 * 6000
YLC 160-2 * 5
288000 ~ 345600
4820
10
YLC 160-2 * 6
345600 ~ 414720
5784
12
YLC 160-2 * 7
403200 ~ 483840
6748
14
YLC 160-2 * 8
460800 ~ 552960
7712
16
YLC 224-2 * 6
486000 ~ 583200
8100
12
YLC 224-2 * 7
567000 ~ 680400
9450
14
YLC 224-2 * 8
648000 ~ 777600
10800
16
YLC 224-2 * 9
729000 ~ 874800
12150
18
YLC 224-2 * 10
810000 ~ 972000
13500
20
YLC 224-2 * 11
891000 ~ 1069200
14850
twenty two
MPD224-2 * 12
972000 ~ 1166400
16200
twenty four


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Phone: 13898801113
Fax: 024-86724248
Email: tongtengshiye@163.com
Address: Building A, Shenghua Youth Street, Shenhe District, Shenyang
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Company Address: Shenyang Tongteng Environmental Protection Industrial Co., Ltd.
Phone: 13898801113
Fax: 024-86724248
Email: tongtengshiye@163.com
Address: Building A, Shenghua Youth Street, Shenhe District, Shenyang