Influence of pleat geometry on the filtration and cleaning characteristics of filter media

Li, Shihang; Hu, Shuda; Xie, Biao; Jin, Hao; Xin, Jie; Wang, Fei; Zhou, Fang

doi:10.1016/j.seppur.2018.05.002

Cited by 62 publications

(35 citation statements)

References 32 publications

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“…An increase in particles penetration was found as a result of their rebound and retention at speeds above 0.5 m/s. Li et al [27] investigated the influence of pleat geometry and their dust load on the pressure drop of pleated air filters. Six types of test chambers were designed with different pleat ratio with the same pleat side length.…”

Section: Filter Service Aftermentioning

confidence: 99%

Problems of selecting filter partition in passenger car engine intake air filters

Dziubak¹,

Bąkała²

2021

Combustion Engines

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The aim of this study was to verify the criteria for selecting pleated filter partitions used in passenger car engine filters. The paper presents the problem of optimizing pleated air filters in the dir ection of minimizing pressure drop, which is the source of engine energy losses. Two criteria for selection of a paper filter partition for specific operating conditions of the filter and the engine are presented: criterion of permissible separation speed and criterion of permissible pressure drop. The actual filtration area of 44 paper pleated filter elements used in passenger cars and the air stream flowing through the filter were determined, which made it possible to calculate separation speed. In 62% of the analyzed filter inserts, the calculated separation speeds are within the speed range recommended by the constructors, Fmax = 0,06-0,12 m/s. Exceeding permissible separation speed Fmax = 0,12 m/s was found mainly in supercharged engines. Negative effects of engine operation with an air filter with too small separation area are presented, in the form of increased pressure drop and energy loss of the engine as well as shorter car mileage to reach permissible pressure drop.

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Section: Filter Service Aftermentioning

confidence: 99%

Problems of selecting filter partition in passenger car engine intake air filters

Dziubak¹,

Bąkała²

2021

Combustion Engines

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“…After aging, the cleaning efficiency using reverse pulse-jet was evaluated. The adhesion force between the filter cake and the filter medium was estimated using the reverse flow technic, which is commonly used in the literature and reported to give acceptable estimation (Seville et al, 1989;Silva et al, 1999;Tanabe et al, 2011;Li et al, 2019a;Xie et al, 2020). This method consists on measuring the pressured drop of an airflow in the reverse direction of filtration across the filter and the cake (figure 4).…”

Section: Evaluation Of the Cleaning Efficiency And Adhesion Forcementioning

confidence: 99%

Regeneration of dust filters challenged with metallic nanoparticles: Influence of atmospheric aging

Khirouni

Charvet

Thomas

et al. 2020

Process Safety and Environmental Protection

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The aim of this study was to evaluate the regeneration efficiency of fibrous filters clogged with metallic ultrafine particles, as several complaints have been made by industrials in the metallurgical field about difficulties linked to the cleaning of filters. Aging of the dust deposits on the filters surface was also reported to be problematic. In this work, the metallic nanoparticles were generated by a pilot thermal spraying process using electric arc. Experiments were conducted on flat filters and the cleaning was performed using reverse pulse-jet. The regeneration efficiency was evaluated according to the residual pressure drop, the removed mass and the cleaned surface. Experiments revealed, under different conditions, a patchy inefficient cleaning of the clogged filters. The cleaning efficiency did not exceed 30% according to the removed mass. Clogging/unclogging cycles showed that the filtration process is highly instable as the residual pressure drop kept increasing very rapidly. The influence of atmospheric aging, i.e. exposure to different humidity conditions over time, on the filter cakes was investigated. Results showed that in presence of humidity a chemical reaction was responsible for making the deposit more adherent. The regeneration efficiency was reduced to 10% according to the removed mass after aging for 15 days under 80% humidity rate.

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“…Many ionic liquids are soluble in water which is able to isolate coal from oxygen by forming a liquid film on coal surface. [35][36][37][38] In order to find out the optimal concentration of ionic liquid solution with low cost and good effect, the effect of ionic liquid solution concentration on CSC was investigated through FTIR and temperature-programmed experiments. In this paper, five ionic liquids were mixed with water to form ionic liquid solutions at the mass ratios of 0:1, 1:2, 1:5, 1:10, 1:25, and 1:50, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…[30][31][32][33][34] They laid a foundation for exploring a kind of suitable and economical green material for CSC inhibition. [35][36][37][38] In order to find out the optimal concentration of ionic liquid solution with low cost and good effect, the effect of ionic liquid solution concentration on CSC was investigated through FTIR and temperature-programmed experiments.…”

Section: Introductionmentioning

confidence: 99%

Effects of ionic liquid concentration on coal low‐temperature oxidation

Cui

Jiang

Zheng

et al. 2019

Energy Science & Engineering

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In order to find out the optimal concentration of ionic liquid to lower the cost of inhibiting coal spontaneous combustion, effects of aliphatic hydrocarbons, hydrogen bonds, and some structural parameters of coal samples treated with low‐concentration ionic liquids were analyzed through Fourier‐transform infrared spectroscopy (FTIR) and temperature‐programmed experiments. Meanwhile, the changes of index gases in the heating process were observed by the temperature‐programmed method. The results show that the contents of aliphatic hydrocarbons in the treated coal samples decrease remarkably, so does the length of aliphatic chain CH2/CH3; besides, the amount of CO produced also decreases to some extent. When the mass concentration ratio is 1:10, HB‐tc, BB‐tc, AC‐tc, and BN‐tc can reduce the spatial structure and enhance the structural stability of aromatic clusters in coal. The CO concentrations of 1:2 HB‐tc and 1:10 AC‐tc are obviously lower than that of raw coal, indicating their better inhibitory effects. The inhibitory effect of HB‐tc decreases with the decrease in concentration. With the rise of temperature, the effect of concentration on the inhibition of CO production gradually weakens at 180°C and 200°C. AC‐tc achieves the optimum inhibitory effect near 1:10 mass concentration ratio.

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Influence of pleat geometry on the filtration and cleaning characteristics of filter media

Cited by 62 publications

References 32 publications

Problems of selecting filter partition in passenger car engine intake air filters

Problems of selecting filter partition in passenger car engine intake air filters

Regeneration of dust filters challenged with metallic nanoparticles: Influence of atmospheric aging

Effects of ionic liquid concentration on coal low‐temperature oxidation

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