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Study on Dust Collector Based on Vortex Principal Through Numerical Simulation and Orthogonal Experiment

Author: ZhangTengLong
Tutor: LiuGenFan
School: Huazhong University of Science and Technology
Course: Chemical Process Equipment
Keywords: V shaped plank Discrete Phase Model Orthogonal experiment Mechanics of aerosol
CLC: X701.2
Type: Master's thesis
Year: 2011
Downloads: 63
Quote: 1
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Abstract


There is no doubt that variety of dust collectors play important role in the governance of controlling the atmosphere quality. Original high efficient dust collectors have some defects, such as big investment in equipment, high operational cost. For the sake of exploiting high efficient, lower pressure-drop catcher, studying the V shaped plank grounded on vertex principal is the main objective in this paper.The first of the article concentrate on introducing the different force of particle in the mixture of dust and gas, the next step is establishing the physical model to cater to the V shaped plank, the following is figuring out the equation of the efficiency through building mathematical model.Maybe do some trials to validate the equation should be the traditional way. But there is no way to designing the dimensions of the device. In order to decrease the blindness in the experiment and with the help of Computational Fluid Dynamics software Fluent, I selected several parameters to simulate. The outcome of simulation suggested that the dust collection efficiency was around 25% and the pressure-drop varied from 200Pa～300Pa at the same time.When I have done the simulation work, some basic size could be confirmed. Selecting four primary elements and choosing dust collection efficiency plus pressure-drop as assessment indexes to frame the orthogonal experiment was essential. From the data an unrivalled portfolio for this facility was concluded. Inlet mixture velocity: 3m/s; the angle of V shaped plank: 60°; the distance of two near plank: 40mm; the diameter of the ash particle :10μm.For the judge of this equipment’s synthesis performance, some comparison was done. Under the diameter of 10μm, this device could attain collection efficiency about 69% than 47% in some common dust catcher. Under the diameter of 5μm, it could reach 69% in highest level and 40% in average, inertial dust collector was about 16% , common cyclone was 27%. On account for this phenomenon we got an assertion this equipment had a great advantage in collecting mini particles.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Exhaust gas processing and utilization > Smoke and dust
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