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

Abstract

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.

Determination of Pressure Drop Characteristics of Fly Ash Suspension with Additive for Hydraulic Transportation

“…This may be attributed that additive reduces the inter-particulate frictions and surface tension among the particles of ash in slurry suspension which further lead to decrease in pressure drop (Kosswig 2002). Similar observations were also drawn by investigators (Chandel et al 2009;Seshadri et al 2008 andKumar et al 2017) for other additives. The reduction in pressure drop for fly ash slurries was observed as 9.14, 20.97 and 6.19% with increase in dosage of additive from 0-0.2, 0.2-0.4 and 0.4-0.6% respectively.…”

“…This is due to the fact that increase in solid concentration results in steep increase in density and viscosity of the slurry suspension. Similar type of phenomenon was observed by investigators (Verma et al 2006;Seshadri et al 2008;Chandel et al 2009;Kumar et al 2017).…”

Influence of Additive for Optimize and Sustainable Fly Ash Suspension

“…At a temperature of 35 degrees Celsius, the relative viscosity of the slurry suspension was determined to be the lowest for all of the data that was evaluated. When there are a greater number of solid particles present in the slurry solution, the shearing process needs to start with a high initial shear tension [7,[14][15][16][17][18]. are, respectively, 9:1, 8:2, 7:3, and 6:4.…”

“…Typically, the pneumatic mode is used to transport FA. A number of scholars [5][6][7][8][9] have looked into the rheological properties of ash slurry suspensions and found some interesting results. Extensive pilot plant test loops have been used to investigate the rheological characteristics of FA slurry, among other things [10][11][12][13].…”

Rheological Behavior of Fly Ash Suspension with Additive for Hydraulic Conveyance

“…The slurry pipelines are used for the transportation of fly ash slurry suspension as a lean concentration from the generation unit to a disposal area. During the transportation of fly ash a large amount of water and pumping power is required [2][3][4][5]. So, an adequate design of the slurry transportation system is needed.…”