The aim of this study was to predict ash and water contents in coal samples using machine learning regression techniques specifically LassoCV RidgeCV ElasticNetCV and LassoLarsCV The analysis focused on finding non zero coefficients at specific wavenumbers and highlighted the influence of infrared IR intensity on prediction accuracy
Coal bottom ash CBA is the unburnt matter of the coal incineration [20] It is formed at boiler and constitutes about 10 20% of coal ash [21] In terms of chemical composition this ash is a complex mixture metal carbonates and oxides [22] As the ash is considered waste material it is thrown at landfill or in the ponds
Siddique et al [6] investigated the properties of coal bottom ash particles as a fine aggregate replacement The presence of bottom ash as a fine aggregate in concrete exhibited superior dimensional stability which reduced the drying shrinkage crack of concrete due to the porosity of the physical bottom ash structure
A large quantity of coal fly ash is generated worldwide from thermal power plants causing a serious environmental threat owing to disposal and storage problems In this work for the first time coal fly ash is converted into advanced and novel aerogel fibers and high purity α Al2O3 Silica bacterial cellulose composite aerogel fibers CAFs were synthesized
In the context of the mounting crisis of waste management and environmental sustainability coal bottom ash CBA emerges as a pioneering solution in the field of construction This study which is a pioneering investigation delves into the transformative impact of integrating CBA into the fabric of various concrete compositions which range from traditional mortar to
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The key stages of coal gasification involve drying pyrolysis gasification combustion ash formation sulfur oxidation and nitrogen oxide formation Bell et al 2010 There exists different types of coal gasification technologies such as moving bed gasification MBG fluidized bed gasification FBG and entrained flow gasification EFG
The slices are then placed on drying trays and fitted in either solar or mechanical driers for drying The dries are then finally packaged for either local or export markets Fig 1 The preparatory stages of the drying process line result in the generation of biodegradable solid waste such as the crown peel core and culled pineapple
To research the properties of cemented coal gangue fly ash backfill CGFB exposed to different concentrations of sodium sulfate solutions under drying wetting cycles the mass changes uniaxial compressive strengths sulfate ion contents at different depths and microstructures of CGFB samples were measured in this study
China is the largest coal consumer around the world and coal accounts for more than 60% of the country s energy mix Peng et al 2018; Wang et al 2019 Coal fly ash CFA a solid waste produced by coal fired thermal power plants during the combustion of pulverized coal is currently one of the largest solid wastes in China Yao et al 2015 In 2018
The utilization of coal bottom ash CBA and fly ash in concrete has become more common For CBA concrete curing conditions would influence the thermal properties of the concrete due to the high water absorption capacity of the CBA aggregate In addition
Based on the results of using the prototype dryer to process 14% of Coal Creek s total fuel feed engineers project that the full scale integrated four dryer system will be able to reduce by
The technique uses coal gangue fly ash and other solid wastes near coal mines as the main raw materials to process paste slurry which is then transported to the goaf through a pipeline [3 5] The properties of cemented coal gangue fly ash backfill CGFB are the basis of paste filling to determine the effect of controlling ground subsidence
The chemical composition of coal ash and the content of the critical elements Ga Sc and V in coal and ash are examined herein In this study lignite and bituminous coal from Polish deposits were used The coals were subjected to ultimate and proximate analysis; the petrographic composition was determined based on maceral groups The chemical
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Table 1 presents the current mainstream coal gasification technologies These technologies exhibit varying application effects due to differences in raw materials and process requirements Through a comparative analysis of the fundamental aspects of these three technologies it is evident that coal resource conversion application technology is widely
The purpose of this paper is to investigate the effect of the pulverized coal drying temperature on fly ash carbon content and slagging of a 1000 MW unit coal fired boiler The pulverized coal was dried at three selected temperatures of 25 °C 75 °C and 110 °C and the moisture and porosity of the pulverized coal particles were measured
The diversification of coal for its sustainable utilization in producing liquid transportation fuel is inevitable in countries with huge coal reserves Gasification has been contemplated as one of the most promising thermochemical routes to convert coal into high quality syngas which can be utilized to produce liquid hydrocarbons through catalytic Fischer Tropsch F T synthesis
A Comparative Study on the Thermal Conductivity of Concrete with Coal Bottom Ash under Different Drying Conditions In Hwan Yang Corresponding Author three cylindrical specimens of each series were tested by using a universal testing machine with a capacity of 2000 kN to evaluate the compressive strength of the CBA concrete in
A PAX pneumatic ash extractor for wet to dry conversion of coal ash Photo courtesy of United Conveyor Corp Bottom Ash Wet to Dry Conversions In the past few years UCC has designed installed
