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LPM (M) anti-explosion collector

Air Tank Pulse Bag Dust collector Instruction

1. Conspectus

       LPM(M) anti-explosion air tank pulse valve dust collector is introduced and representing advanced high efficiency dust removers.

 It concentrates the advantages of sector room pulse reverse blow and pulse dust removers, overcomes defects such as weak dust removing strength, synchronization of pulse-blow and filtering process. Thus, it enlarges its application areas and expands the life-span of filter bags and improves dust remove efficiency.

       Coal powdering process widely exists in steel, electricity, building material, chemical and mechanical industries. Usually, use mills to grind the coal blocks into powder, then use high temperature gas to dry up the powder and bring it out of the mill and then use dust collector separate the coal powder from the gas. Commonly we have a long streamline for this technique. The streamline is composed of the hurricane dust remover and bag dust remover. Since the bag dust remover only works well under 30g/Nm3, severe cases like friction overload often occurs without proper protection measures. Thus low dust cleaning ,self-ignition and explosion cases are inevitable.

       LPM (M) anti-explosion air pulse tank bag dust remover has an advanced structure, with anti-static felt filter material, each sector room has anti-explosion device, and the electric parts are also explosion-resistant. It adopts off-line high pressure dust cleaning, thus it is competent for  explosive, inflammable dust removing, so it does high efficiency work in coal powder collection system.

2. Features

       1.This series, according to room numbers and number of filter bags in each room, is divided into 33 models. Number of filter bags in each room can be 32, 64, 96, and 128. The filter bag diameter is 130mm. Filter bag length can be 2450mm or 3060mm.

       2.This series products can work under negetive/positive pressure without structure change. The dust removing rate can reach 99.9%. The dust density of the purified air is less than 50mg/m3.

       (standard). Please refer to table 2, 3, and 4 for technical parameters

       3.If used in cold area when the outdoor temperature is less than –25 ℃, heating device is needed with the shell of the dust remover revised.

       4.The anti-explosion air tank bag pulse dust remover features sector dust cleaning (off-line dust cleaning). When one sector is under dust cleaning, the filtering air flow is cut off, preventing reattachment of dust by compressed air blowing. Thus, this product is able to gather dust from air with dust density of 1000g/m3.

       5.This series filter bags adopts anti-static polyester felt material, allowing maximum consecutive working temperature of 110℃

3. Working theory

       This product is composed of shell, dust pot, dust dumping device, anti-explosion gate, brackets and pulse valve dust removing system. When the dust air goes from the wind entrance into the dust remover, it first encounters the inclined separation board and turn into the dust pot with heavy dust powders removed. The air then turns upward and goes through the filter bags. The dust particles are caught on the outer surface of the bag. The purified air goes into the clean air room on the top of the filter room and then it is discharged from the wind pipe. The wind entrance; of 32 model dust remover is located at the top of the dust pot. The air goes into the dust pot and then encounters the separation board at the end of the wind pipe. The detailed process is the same with the former introduction. The shell is separated into several sectors. The system will clean the sectors one by one in accordance with the preset timing. There is an elevation valve in each sector. When cleaning dust, the valve is closed to shut down the air flow. Then the pulse valve opens and send compressed air into the filter bags to shock off the dust attached on the outer surface of the filter bags. The pulse blow width and dust cleaning period is conducted consecutively by the dust removing PLC.

 

4. Model selection

       Use main parameters of the dust point environment such as wind volume, air temperature, and dust density to work out the model needed. The Outline drawing please refer to 1, 2, 3, 4, and 5.

       1.Work out the net filtering area of the dust remover according to processing air volume in the formula below:

       F=Q/60Vn (M3)

       Q-----processing air volume (M3/h)

       Vn-----net filtering wind speed

       Net filtering wind speed of XLPM(M) anti-explosion air tank pulse dust remover is usually (0.9-1.0) m/min

       2.Select dust remover model referring to table 1, 2, 3, 4, and 5.

       Example: a coal mill, processing air volume 88000m3/h, dust air temperature 90℃, please select a model.

       F=Q/60Vn=88000/60*0.95=1544(M2) (Net filtering wind speed 0.95m/min), So the net filtering area is 1544m2. Refer to the tables, we can find out XLPM96-2*9 is the best choice.

5. Model introduction

       Coal mill, coal powder collection

       Sector number each row

       Row number (single row omitted)

       Filter bag number each sector

       Pulse mode

       Air shock mode

       Filter bag mode

6. Dust cleaning electric control device

       This device needs anti-explosion function. Manual/auto control mode is available. When the controller mal-functions, manual operation is preferable for repair and adjustment. Timing mode and set-pressure mode are selective in auto control. For multi-room dust remover, PC concentrated control is adopted.

7. Notes

       1.The system is composed of shell, dust pot, filter bag device, air input/output pipe, dust dumping device and pulse blow system(including pulse valve, pipes, valves, air source 3-way connection part and air tank)

       2.The dust remover, according to its specification, can be either directly delivered or disassembled delivered. This is up to the buyer.

       3.The dust remover is equipped with dust removing electric control device, which is in timing control mode. If the buyer needs set pressure mode control, please note this in the order form and the price of pressure sensor, barometer and alarm is additional.

       4.The supplier offers product instruction and installation instruction files.

       5.The power supply system is not the supplier responsibility.

       6.The compressor (compressed air source) is not the supplier responsibility.

       7.If insulation measures need to be done, please declare in the order form. 

LPMMd
LPMMd
LPMMd (1)
LPMMd (2)
LPMMd (3)
LPMMd (4)
LPMMd (5)


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