新型旋風(fēng)—過濾除塵器除塵機(jī)理及實驗研究
[Abstract]:According to the utilization conditions of coalbed methane, it is necessary to purify it. The existing dust removal technology and previous research are analyzed synthetically. Combined with the working conditions of coal bed methane, the cyclone separator is combined with the filter tube type dust collector. A new type of dust removal system-whirlwind filter dedusting system is designed and developed, and its structure principle and performance index are introduced in detail. Through centrifugal force and inertia, the new dust removal system makes the air flow rotate around the wall of the cyclone tube to remove the coarse particles. Under the action of cyclone centrifugal force, the unseparated fine particles arrive at the position of the filter tube with the air current, and are intercepted in the outer wall of the filter tube. The clean air flow passes through the filter tube and is discharged from the outlet of the filter, and the two stages are separated, and the clean gas is finally discharged. In this paper, the effects of different operating parameters on pressure loss, dust removal efficiency and ash removal efficiency are studied by processing the experimental equipment and setting up the experimental platform. Finally, the optimal operating parameters are determined. Through experimental study, it can be concluded that the dust collection system can effectively separate fine particles by cyclone centrifugal force and filter, and the dust removal efficiency can reach 99.9967 ~ 99.9969, which is about 19 percentage points higher than that of cyclone dust collector. The first cycle is 2872s, which prolongs the filter barrel life by 502s compared with the filter drum filter. The life of the filter tube in the cyclone filter dust collector can be improved effectively. In addition, the effect of air spray on the performance parameters of cyclone filter and dust removal system is studied. It is revealed that different amount of air spray mainly influences the deposition morphology of dust on the surface of filter media by changing the inertia force, surface adhesion force and friction force of dust, and then affects the mechanism of filtration performance.
【學(xué)位授予單位】:中國礦業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TD714.4
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