Tube wear in gas fluidized beds—II. Low velocity impact erosion and semi-empirical model for bubbling and slugging fluidized beds

Zhu, Jesse; Lim, C. Jim; Grace, John R.; Lund, Jacob

doi:10.1016/0009-2509(91)85108-a

Cited by 31 publications

(10 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A linear trend, at higher machining time (Fig. 2), for mass loss is then achieved in agreement with the typical results reported in the literature [5,6]. In addition, the values, even numerically, tend to fit the results in literature very well [5,6], even if the geometrical configurations of the specimens subjected to FBM in the literature are very different from those used in this study.…”

Section: Discussionsupporting

confidence: 91%

“…Zhu et al [5] led a thorough experimental investigation of damage induced by the action of abrasive particles on tubes immersed in fluidized bed, underlining the most important process parameters and the influence of the tube material mechanical properties. In further work, Zhu et al [6] tried to develop an erosion model for low speed impact between the abrasive media and the metal surface. Other papers [7,8], attempted to develop erosion models in fluidized bed: semi empirical brittle, ductile and fatigue models were developed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A new technology in surface finishing: Fluidized bed machining (FBM) of aluminium alloys

Barletta

2006

Journal of Materials Processing Technology

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

A new technology in surface finishing: Fluidized bed machining (FBM) of aluminium alloys

Barletta

2006

Journal of Materials Processing Technology

View full text Add to dashboard Cite

“…There is also good agreement between these results and the data in the literature [24,[28][29][30][31]]. An optimized jet velocity value of 13 m s À1 was analytically found by Kim et al [24] in their attempt to model a magnetic AJM system, and Barletta et al found a similar value to be best in FB-AJM of stainless steel tubular parts [27].…”

Section: The Analysis Of Process Parameters: the Influence Of Abrasivsupporting

confidence: 79%

Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes

Barletta

Guarino

Rubino

et al. 2007

International Journal of Machine Tools and Manufacture

View full text Add to dashboard Cite

This paper deals with the internal finishing of tubular components made from a high strength aluminium alloy (AA 6082 T6) using a fluidized bed assisted abrasive jet machining (FB-AJM) system.Firstly, a Taguchi's experimental plan was used to investigate the influence of abrasive jet speed, machining cycle, and abrasive mesh size on surface roughness and material removal trends. Secondly, the leading finishing mechanisms were studied using combined 3d profilometer-SEM analysis to monitor the evolution of the surface morphology of machined workpieces. Finally, the circumferential uniformity and precision machining of the inner surface of workpieces were tested by evaluating the values of the more significant roughness parameters in different circumferential locations.Consistent trends of surface roughness vs. operational parameters were measured, and significant material removal was found to affect the workpieces during machining. As a result, FB-AJM was found to preferentially machine the asperities and irregularities of the surface, thereby altering the overall surface morphology producing more regular and smoother finishing. Moreover, the good circumferential uniformity and machining accuracy FB-AJM guarantees even on ductile aluminium alloy workpieces ensure that this technology can be applied to a diverse set of industrial components. r

show abstract

“…A membrane autopsy performed by Zappia et al concluded that the unexpected presence of silicon dioxide spicules (needle-like structures) resulted in multiple membrane occlusions and punctures, leading to a loss in membrane integrity [321]. The erosive effect of fluidized particles [322][323][324][325] in the feed stream is also known to compromise the membrane integrity by impacting the membrane surface [123,238,242,[326][327][328][329]. Patterns of particle scraping was clearly observed [238,279], as well as a decrease in the membrane rejection for the larger fluidized glass beads (3 mm) [242].…”

Section: Foreign Bodiesmentioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

View full text Add to dashboard Cite

Abstract:The submerged membrane filtration concept is well-established for low-pressure microfiltration (MF) and ultrafiltration (UF) applications in the water industry, and has become a mainstream technology for surface-water treatment, pretreatment prior to reverse osmosis (RO), and membrane bioreactors (MBRs). Compared to submerged flat sheet (FS) membranes, submerged hollow fiber (HF) membranes are more common due to their advantages of higher packing density, the ability to induce movement by mechanisms such as bubbling, and the feasibility of backwashing. In view of the importance of submerged HF processes, this review aims to provide a comprehensive landscape of the current state-of-the-art systems, to serve as a guide for further improvements in submerged HF membranes and their applications. The topics covered include recent developments in submerged hollow fiber membrane systems, the challenges and developments in fouling-control methods, and treatment protocols for membrane permeability recovery. The highlighted research opportunities include optimizing the various means to manipulate the hydrodynamics for fouling mitigation, developing online monitoring devices, and extending the submerged HF concept beyond filtration.

show abstract

Tube wear in gas fluidized beds—II. Low velocity impact erosion and semi-empirical model for bubbling and slugging fluidized beds

Cited by 31 publications

References 5 publications

A new technology in surface finishing: Fluidized bed machining (FBM) of aluminium alloys

A new technology in surface finishing: Fluidized bed machining (FBM) of aluminium alloys

Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

Contact Info

Product

Resources

About