The influence of ash concentration on change of flow and pressure in slurry transportation

Knežević, Desimir; Kolonja, Bozo

doi:10.1504/ijmme.2008.020474

Cited by 10 publications

(4 citation statements)

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“…maximum pressure drop was also examined with the addition of 0.4% additive in bottom ash suspension. researchers obtained similar trend by using fly ash slurry [12,14,23]. The specific energy consumption of the suspension is determined by using following relation: The computed values of specific power consumption with and without addition of additive in bottom ash suspension at solid concentration of 60% (by weight) with different velocities (1 to 3 m/s) are shown in Figure 8.…”

Section: Calculation Of Specific Energy Consumptionmentioning

confidence: 80%

Measurement of Flow Characteristics for Multiparticulate Bottom Ash-water Suspension with Additives

Kumar¹,

Kumar²,

Gupta³

et al. 2017

JRST

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ABSTRACT:In the present work, Rheological characteristics of bottom ash was studied with and without addition of additives. Two additives were selected as Henko detergent and sodium sulfate. The additive added in bottom ash suspension with proportion of 0.2, 0.4 and 0.6% (by weight). The solid concentration of bottom ash suspension varied from 10 to 60% (by weight). Reduction in apparent viscosity is highly noticeable with addition of sodium sulfate as compared to Henko detergent.The investigation reveals that bottom ash suspension in above manner has a potential to transport in slurry pipeline with minimum energy consumptions.

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Section: Calculation Of Specific Energy Consumptionmentioning

confidence: 80%

Measurement of Flow Characteristics for Multiparticulate Bottom Ash-water Suspension with Additives

Kumar¹,

Kumar²,

Gupta³

et al. 2017

JRST

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“…Sodium silicate (Na 2 SiO 3 ) is an ionic compound having detergent activity and has been employed as a suitable dispersant for FAS stabilization and transportation. 23,30 Besides stabilization and transportation, it can effectively bind FA particles so that after the disposal of the slurry to the ash pond, it can settle in the ash pond, thus minimizing environmental pollution. Our main objective is to use the maximum amount of the natural extract with the minimum amount of sodium silicate to form a stable slurry within an acceptable range of viscosity.…”

Section: Resultsmentioning

confidence: 99%

“…auriculiformis (0.020 and 0.010 g cm –3 ). From the figure, it is observed that the apparent viscosity of FAS decreases with an increase in the concentration of sodium silicate from 0.001 to 0.004 g cm –3 . , Beyond this concentration, viscosity remains approximately constant. Also, it is clear from Figure that different isolation processes have no significant impact on stabilizing and viscosity reducing tendency of sodium silicate.…”

Section: Resultsmentioning

confidence: 99%

Sustainable Transportation, Leaching, Stabilization, and Disposal of Fly Ash Using a Mixture of Natural Surfactant and Sodium Silicate

Behera

Das²,

Mishra

et al. 2021

ACS Omega

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The present study evaluates the transportation, leaching, and stabilization ability of novel saponin extracted from the fruits of Acacia auriculiformis. To enhance the dispersing behavior of the fly ash slurry (FAS) at a lower dosage of sodium silicate, A. auriculiformis was incorporated in FAS. In addition to the rheological study, an attempt has been made to remove heavy metals through leaching for the safe disposal of FAS. Critical factors such as the fly ash (FA) concentration, saponin dosage, surface tension, ζ potential, temperature, and combination of saponin and sodium silicate, affecting the rheology of FAS, were extensively studied. The addition of a nonionic natural surfactant saponin has been proved to enhance the wettability of FA particles by decreasing the surface tension of FAS. The obtained rheology results were compared with the stabilization yield of the previously reported commercial surfactant cetyltrimethylammonium bromide. The incorporation of sodium silicate in the FAS system was found to be phenomenal in the settling and stabilization of FAS, thereby developing reaction products like sodium aluminum silicate (N-A-S). This facilitates the sustainable disposal of FA preventing air pollution after dewatering. The formation of N-A-S was further supported by scanning electron microscopy (SEM) and X-ray diffraction (XRD) studies.

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“…Kumar et al [11] have conducted a research to investigate the effect of particle gradation on pressure drop of ash slurries in the pipeline, and a model has been proposed in their study to predict the pressure drop and solids distribution of the slurries. Knezevic and Kolonja [12] have revealed the influence of ash concentration on the pressure drop of ash slurries through pipeline transportation. Senapati and Mishra [13] have developed a nonNewtonian pseudo-plastic power law head loss model to predict the pressure drop of ash slurries through pipeline transportation.…”

Section: Introductionmentioning

confidence: 99%

Transportability and pressure drop of fresh cemented coal gangue-fly ash backfill (CGFB) slurry in pipe loop

Yang

Liu

2015

Powder Technology

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The influence of ash concentration on change of flow and pressure in slurry transportation

Cited by 10 publications

References 0 publications

Measurement of Flow Characteristics for Multiparticulate Bottom Ash-water Suspension with Additives

Measurement of Flow Characteristics for Multiparticulate Bottom Ash-water Suspension with Additives

Sustainable Transportation, Leaching, Stabilization, and Disposal of Fly Ash Using a Mixture of Natural Surfactant and Sodium Silicate

Transportability and pressure drop of fresh cemented coal gangue-fly ash backfill (CGFB) slurry in pipe loop

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