Numerical study of cleaning performance and flow field characteristics of chuck type filter cartridges

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2024-09-24 DOI:10.1016/j.seppur.2024.129858

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引用次数: 0

Abstract

Filter cartridges have a high collection efficiency for fine particles and are used to reduce and control pollution. A chuck structure is installed on the top of the cartridge to allow for quick installation and removal of the cartridge. However, the inner diameter of chucks used in industry is usually smaller than the outer diameter of the cartridge, resulting in the actual outlet area of the cartridge being only about 70% of the theoretical outlet area. To better design and optimize the filter cartridge dust collector, analyzing the flow characteristics inside the cartridge with the chuck installed was necessary. In this work, Peak static pressure and comprehensive pressure (P_C) are used as indexes to study the influence of different types of chuck over the performance of cleaning from cartridges, as well as to analyze the flow characteristics within the cartridge under different conditions. It was shown that chucks improve the cartridge cleaning performance by increasing the peak static pressure in the upper part, resulting in a maximum of 167.4% compared to no chuck. Enhancement of cleaning performance at the top of chucked cartridges is caused by airflow buildup, while enhancement of air permeability at the top cuts down on the cleaning intensity, so the improvement of cartridges by breathable chucks is always lower than that of common chucks. In addition, based on the trend of the overall cleaning strength of the cartridge, we obtained the jet diffusion angle and the formula for the optimal chuck inner diameter, which helps to choose the parameters of the chuck more conveniently in practical applications.

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卡盘式滤芯的清洁性能和流场特性数值研究

滤芯对细微颗粒的收集效率很高，用于减少和控制污染。滤筒顶部安装有卡盘结构，以便快速安装和拆卸滤筒。然而，工业中使用的卡盘内径通常小于滤芯外径，导致滤芯的实际出口面积仅为理论出口面积的 70% 左右。为了更好地设计和优化滤筒除尘器，有必要分析安装卡盘后滤筒内部的流动特性。这项工作以峰值静压和综合压力（PC）为指标，研究不同类型的卡盘对滤筒清灰性能的影响，并分析不同条件下滤筒内的流动特性。结果表明，卡盘通过增加上部的峰值静压提高了滤筒的清洁性能，与无卡盘相比，最大提高了 167.4%。夹头式滤筒顶部清洁性能的提高是由气流积聚引起的，而顶部透气性的提高会降低清洁强度，因此透气夹头对滤筒的改善总是低于普通夹头。此外，根据滤芯整体清洁强度的变化趋势，我们得到了喷射扩散角和最佳卡盘内径的计算公式，这有助于在实际应用中更方便地选择卡盘参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.