Experimental study of pulse-jet cleaning of bag filters supported by rigid rings

Simon, Xavier; Chazelet, Sandrine; Thomas, Dominique; Bémer, Denis; Régnier, Roland

doi:10.1016/j.powtec.2006.10.005

Cited by 91 publications

(53 citation statements)

References 16 publications

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“…In some previous studies (Simon et al, 2007;Lo et al, 2010a;Yan et al, 2015), the time-dependent static pressure were chosen as the indicator for efficiency and quality of reverse flow cleaning (instead of peak pressure difference). Fig.…”

Section: Transient Averaged Static Pressurementioning

confidence: 99%

“…Consequently, the transient reduction in the average static pressure was thought not to have a negative effect on the cleaning efficiency and quality. Further, the rapid variation of mechanical forces resulted from the large static pressure change could lead to a sudden acceleration of filter media near the cartridge top sections, consequently facilitating dust cake detachment from filter surface (Simon et al, 2007). As evidenced in Fig.…”

Section: Transient Averaged Static Pressurementioning

confidence: 99%

“…Reverse pulsing jet cleaning has been widely adopted in industrial filtration applications for periodical regeneration of cartridge filter media (Leith and Ellenbecker, 1980;Lu and Tsai, 1996;Itoa et al, 1998;Simon et al, 2007). In continuous filtration systems either for powder material recovery or particulate matter removal, reverse pulsing jet cleaning is considered as the standard technique to maintain economical filtration operation.…”

Section: Introductionmentioning

confidence: 99%

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Cleaning of Filter Cartridges with Convergent Trapezoidal Pleat Shape via Reverse Multi-Pulsing Jet Flow

Chen

2017

Aerosol Air Qual. Res.

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Pleat structure and tight pleat spacing of pleated filter cartridges often lead to patchy cleaning when applying reverse pulsing technique process to regenerate filter media, consequently resulted in the decrease of the efficiency and quality of reverse pulsed-jet cleaning as well as the service lifetime of filtration units. For improving the non-uniform cleaning or patchy cleaning, a novel convergent trapezoidal pleat shape was used in multi-pulsing reverse flow cleaning. A transient 3D CFD simulation in a simple filtration system with a single filter cartridge was carried out under the four multi-pulsing modes. The effects of multi-pulsing flow cleaning on the cleaning efficiency and quality were systematically investigated. Compared with single-pulsing cleaning mode, the peak pressure differences at the upper regions all became positive because of the increased cleaning frequency, and thus which would be crucially important for improving the local cleaning mechanical stresses and cleaning efficiency. Moreover, the extra peak-pressure augment in the lower regions of filter cartridge also had a positive influence of local cleaning efficiency. For the multi-pulsing scheme of Waveform #4, the peak pressure difference at the section 4 increased by 11.2% than the single-pulsing scheme. The related action mechanism had high correlation with the interaction of residue gas and following jet. Finally, the improvement of the cleaning efficiency and quality are expected to be validated under the decreasing tank pressure and real permeability.

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Section: Transient Averaged Static Pressurementioning

confidence: 99%

Section: Transient Averaged Static Pressurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cleaning of Filter Cartridges with Convergent Trapezoidal Pleat Shape via Reverse Multi-Pulsing Jet Flow

Chen

2017

Aerosol Air Qual. Res.

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“…The industrial filter units are operated usually at the constant flow and as the differential pressure on filter material (ΔP) is increasing due to particles deposition on the filter bags forming cake, the downstream blower must be present for pressure compensation [5,8].…”

Section: Introductionmentioning

confidence: 99%

Pilot plant long-term test of particulate matter removal from the air stream emerging from granulated fertilizers production (stationary source)

Brummer¹,

Jecha²,

Leštinský³

et al. 2015

WIT Transactions on Ecology and the Environment

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In this paper, the results of the 34 day test of particulate matter (PM) removal from air stream emerging from granulated fertilizers production (NPK and mixed ammonium sulphate fertilizers) are presented. Operators of the plant wanted to replace older wet scrubber preferably with filter bags which can provide waste less operation of the technology, because separated PM can be reintroduced to the production. Because of the assumption of the sticky and problematic deposits formation on the filter bags that could increase excessively the pressure loss, test on the pilot unit with 15 filter bags with pulse-jet bags cleaning was carried out. During the test, various technological conditions were tested. Temperatures, stream humidity, pressure loss of bags and inlet and outlet PM concentrations were monitored. It was found that dry cleaning of this air stream is problematic as expected, but feasible. Filter bags were absorbing considerable amounts of water from the dust stream (fertilizers are granulated by steam and water). This fact leads to hard removable deposit formation and increased pressure loss, but if the stream was preheated by a small natural gas burner, the deposition creation was reduced. According to results of the long term test, recommendations for the technological conditions for full scale bag filter were provided for given type of technology and production.

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“…To achieve this, several pollution control devices such as cyclone separators, bag filters and electrostatic precipitators, ESPs, are being employed. Though, cyclone separators [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] and bag filters [3,8,10,[18][19][20][21][22][23] are employed to remove the particulate matter from the flue gas, these techniques have their own limitations. On the other hand, ESPs are most popularly used at thermal power stations [2][3][4]10,20,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] to reduce SPM levels.…”

Section: Introductionmentioning

confidence: 99%

Influence of flue gas conditioning on fly ash characteristics

Shanthakumar

Singh

Phadke

2008

Fuel

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Experimental study of pulse-jet cleaning of bag filters supported by rigid rings

Cited by 91 publications

References 16 publications

Cleaning of Filter Cartridges with Convergent Trapezoidal Pleat Shape via Reverse Multi-Pulsing Jet Flow

Cleaning of Filter Cartridges with Convergent Trapezoidal Pleat Shape via Reverse Multi-Pulsing Jet Flow

Pilot plant long-term test of particulate matter removal from the air stream emerging from granulated fertilizers production (stationary source)

Influence of flue gas conditioning on fly ash characteristics

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