基于响应面法(RSM)的多级旋风分离器细颗粒物排放控制优化

N. Hasyimah, M. Rashid, H. Norelyza
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引用次数: 0

摘要

增加容积空气流量和进口颗粒负荷对mr - duster整体收集效率的影响采用不同分离粒度的棕榈油磨锅炉飞灰,研究了一种新型的多旋流器系统。对装置中试规模的运行条件进行了理论预测和实验筛选。增大体积风流量理论上会提高整体收集效率,但在颗粒负荷一定的情况下,增大体积风流量会导致整体收集效率下降,在筛选阶段的实验结果却与之矛盾。随后,采用Box-Behnken设计的响应面法(RSM)进行了优化工作,确定了系统的最佳运行条件。多旋流器并联布置,证明了该系统具有均匀分散高载气量气流的能力。然而,应避免由于高容量空气流速而导致的多旋风分离器各单元之间的压力过大,因为这种情况可能会降低整体收集效率,因为它允许从料斗中重新夹带的灰尘在旋风分离器之间循环。通过方差统计分析(ANOVA)、验证和验证研究表明,所研制的中试多旋流装置在优化容积空气流量为0.27 m3/s、最大进口颗粒负荷率为2 g/m3和颗粒尺寸为1000 μm的条件下运行,能够满足马来西亚固体燃料燃烧设备行业150mg /m3的目标限值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization of a Developed Multi-Cyclone Using Response Surface Methodology (RSM) to Control Fine Particulate Emission
The effects of increasing volumetric air flow rate and inlet particulate loading on overall collection efficiency of MR-deDuster; a developed multi-cyclone system was investigated using various segregated sizes of palm oil mill boiler fly ash. The operating conditions of the fabricated pilot plant scale of the unit were predicted theoretically and screened experimentally. Increasing volumetric air flow rate theoretically will increase the overall collection efficiency, yet the experimental results during screening stage demonstrated contradict finding when the increment of volumetric air flow rate caused the overall collection efficiency to be decreased for a constant particulate loading. Subsequently, the optimization work was done to determine the optimum operating conditions of the system using Response Surface Method (RSM) with Box-Behnken design. The parallel arrangement of multi-cyclone units proved the ability of the system to uniformly disseminate the gas flow with high volume of gas carrier. Nevertheless, excessive pressure drops between each unit of multi-cyclone due to high volumetric air flow rate should be avoided as such condition may lower the overall collection efficiency by allowing dust re-entrainment from the hopper to circulate between the cyclones. Through statistical analysis of variance (ANOVA), validation and verification studies, it is suggested that the developed pilot scale multi-cyclone unit would be able to meet the targeted limit of 150 mg/m3 for solid fuel burning equipment industry in Malaysia by operating with optimized volumetric air flow rate of 0.27 m3/s, and maximum inlet particulate loading rate and size of 2 g/m3 and 1000 μm respectively.
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