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Application of drum type dust collector in dust removal of crusher outlet

Article source: this site Author: admin popularity: second Time: September 3, 2020 11:24【 large in Small

Our professional products are: dust humidifier, bucket elevator and so on. a duster The performance of the dust collector is expressed by the amount of gas that can be treated, the resistance loss of gas passing through the dust collector and the dust removal efficiency. Cartridge filter The dust collector is composed of filter element or pulse injection. According to the installation methods, the cartridge dust remover can be divided into inclined plug-in type, side mounted type, hoisting type and top mounted type. It can be divided into fiber filter, filter cartridge, filter cartridge, etc. 1. Dust control system before condition

During the design and construction of coal handling system in a company, due to the dust control method of coal handling system in China, we are constantly exploring and developing, and there is no mature experience for us to learn from. The dust collector is composed of filter element or pulse jet. According to the installation methods, the cartridge dust remover can be divided into inclined plug-in type, side mounted type, hoisting type and top mounted type. It can be divided into fiber filter, filter cartridge, filter cartridge, etc. Although considering the dust control problems, but the equipment technology selection is not appropriate, can not really achieve their own expected teaching effect. After that, it puts forward some three-step plan of dust comprehensive social governance, namely water washing, dust suppression and dust collection. After preliminary research, the first step of surface water flushing has been completed, and the effect is good. The last two steps can not be continued due to various analysis reasons. Due to the company's failure to complete the comprehensive construction and management of the coal conveying system, the system control dust concentration level still exceeds the standard, especially the dust at the outlet of the coal crusher and the tail of the belt conveyor seriously exceeds the standard. The maximum dust concentration reaches 64.1mg/m3, the air velocity at the outlet of the tail guide groove reaches 7-10m / s, and the flow rate is 10 58415120m3 / h. When the outlet of the guide chute is running, a large amount of powder is supplied to the outside, with the particle size of 13mm. After the operation, the students can obviously accumulate dust, pollute the ecological environment and endanger the physical and mental health of the staff.

2. Cause analysis of dust production

2.1 the particle size of raw coal becomes smaller after crushing, which is the internal cause of dust environment

If the coal particles broken by the rear crusher are basically 6 mm or less, the coal particles will become smaller, and the surface area will inevitably lead to the increase of gap particles, the decrease of density, the decrease of surface moisture, and the dust generated is internal, which is the reason why the dust of the following crusher level is larger than that of the upstream belt conveyor belt.

Grade 2.2 wind produced by blasting effect of rotor of pulverized coal crusher

When the crusher rotates, the rotor corresponds to the fan blade to the hammer ring arm, and the induction pipe. The equipment of coal crusher is tkk48x103. Theoretically speaking, the effect of small blasting is small. After that, the problem of the coal crusher's guide chute was solved by increasing the flow velocity of the coal crusher's air chute.

2.3 induced wind caused by large drop of coal pipe

After such a large gap in the coal flow, the high-speed air flow in the coal drop pipe is compressed, resulting in air flow, which increases the outlet of powder feeding channel.

2.4 the outlet of feeder (coal crusher inlet) is not tight, which provides internal cause of induced air for coal crusher rotor. As the feeder outlet seal is not tight, an open circulation system is formed at the feeder inlet, feeder inlet, feeder inlet, feeder inlet, feeder outlet and feeder outlet, and a large amount of air is produced at the feeder outlet.

Coal deposits at the end of the drum produce 2.5 times the dust

The utility model damages and disassembles the original cleaning machine of the front empty section of the tail drum, so that the pulverized coal adhered on the belt cannot be removed, and is brought into the tail drum, which turns into fine powder and forms dust when the tail drum rolls.

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