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Parameter design of pulse dust removal pneumatic conveying system

Release time: 2019-10-24

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The dust removal system is very important in the pneumatic conveying system. It is related to the environmental assessment of the project. The standard of the dust removal system is 50mg / m³. The standard configuration of Hengtong in the dust removal system is 20mg / m³. Generally, pulse dust removal is configured in the dust removal system. Cyclone separators are used as the primary dust collector for limited installation heights or special occasions. The dust removal efficiency of the cyclone separator is between 80% -95%, so it is necessary to add a pulse dust collector as a precision dust collector.
The structure of the pulse bag type dust collector is different from the general bag type dust collector, mainly the fixed filter bag porous partition is in the upper half of the box body; a frame is installed in the filter bag to prevent the filter bag from being sucked by negative pressure; In addition, in order to increase the backflushing capability, a venturi tube is installed at the upper mouth of the filter bag; a spray tube is installed at the upper mouth of the venturi tube. Pulse spraying is a signal sent by the controller to periodically clean the filter bag through the actuator.

Its dust removal principle is: the dust-containing gas enters the dust collection box from the air inlet, and due to the sudden decrease in speed, some of the heavy particulate dust is separated by its own weight, falls into the dust collection bucket, and the dust-containing gas continues to flow upward and gradually pass through the filter. The bag, due to the filtering, collision, hooking and diffusion effects of the filter bag, captures most of the fine dust (filter bag dust removal effect). The clean gas purified by the filter bag converges in the filter bag. The tube enters the clean air box and is discharged from the clean air outlet. Due to the gradual thickening of the dust trapped on the filter bag, the pressure loss of the dust collector continues to increase, so the amount of treated gas gradually decreases. In order to stabilize the working condition of the dust collector, the blast cleaning system sprays compressed air into the filter bag according to the specified requirements to remove dust, regenerate the filter bag, and stabilize the amount of processing gas. The cleared dust falls into the dust collecting hopper and is continuously discharged from the body through the ash discharge device. The amount of treated gas before ash cleaning decreases with time, and the pressure loss increases with time. After cleaning, the amount of treated gas and pressure loss are immediately restored and can be stabilized within a certain range.
The design of the dust collector system is also very important, which is related to the stability of the entire system. Depending on the different material properties and different specific gravity, different dust collectors with different filtering areas need to be selected, otherwise the design will not match and the system pressure will be unstable. Therefore, it is necessary to choose a professional manufacturer, which can match various types of pulse dust collectors according to different working conditions.
Pneumatic conveying system is a complete set of projects, each link is interlocked, so when you choose a manufacturer, you can order the entire system. Selecting a manufacturer with such strength can solve your worries and do more with less.

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