ABSTRACT Coal water slurry CWS a mixture of pulverized coal water and additives is a clean liquid coal based fuel for gasification Superhydrophobic surface modification using a secondary particle second liquid system is an effective CWS preparation method
The preparation of coal water slurry CWS using wastewater which contains inorganic and organic components is one method of wastewater utilization In this study the effect of inorganic salts
The hydrophilic surface and developed pore structure restricted the application of abundant low rank coals LRC for the preparation of coal water slurry CWS with high concentration In this work emulsified asphalt was applied as an effective and low cost modifier to modify coal surface and improve the slurry making performance of LRC
Request PDF Preparation of coal slurry with 2 propanol This study explored the feasibility of using waste organic solvents as substitutes for water to prepare coal slurries The rheological
The water added for the preparation of the coal water slurry remained in the particles surrounding instead of penetrating into it Li et al 2018 developed three ionic dispersant using the tannic acid and itaconic acid The dispersants were named as TIA 1 TIA 2 and TIA 3 respectively The TIA 1 dispersant due to its 3 D structure is
The homogenized slurry was injected into the steel mold and placed on the vibration table for 1 min to make the slurry denser Then the slurry together with the steel mold was placed in the standard curing chamber 60 °C RH = 75 % for 24 h The solidified slurry was demolded to obtain coal bottom ash based cementitious materials
Before coal slurry preparation bituminous coal was naturally dried ground and sieved into pulverized coal at a size of <150 μm Residual ammonia wastewater a condensate of coal pyrolysis gas was collected from Dongxin a coal coking factory in Handan City China and subsequently selected as the coking wastewater
DOI / Corpus ID 247138619; Study on the preparation of coal wastewater slurry from salt/alkali wastewater article{Li2022StudyOT title={Study on the preparation of coal wastewater slurry from salt/alkali wastewater} author={Lin Li and Chuandong Ma and Xiaoteng Li and Jianqiao Lyu and Hao Yu and Qingbiao Wang and Zhenhua Wang
Large amounts of coal pitch CP are utilized insufficiently To realize resource utilization CP was employed for preparing high performance coal pitch water slurry CPWS
The maximum slurry concentrations of HMD HAD and HAM were wt% wt% wt% respectively When the coal content in slurry increased the free volume among coal particles and the proportion of free water in CWS was correspondingly reduced which increased the frictional forces and accompanying resistance [34] The stronger viscosity
1 Introduction Coal water slurry CWS a novel type of coal based clean fluidized fuel is usually composed of 60 75 wt% pulverized coal 24 39 wt% water and approximately 1 wt% dispersants [1] [2] [3] During the past decades CWS considered as one of the potential alternatives of fuel oil has received growing interesting due to its low pollution
Up to date several strategies have been proposed to address this challenge These strategies involve upgrading the coal rank [7] [8] [9] optimizing the gradation of coal particles [10] [11] [12] and developing high performance dispersants [13] Among these strategies developing novel dispersants with superior performance is more feasible and cost effective as it doesn t require
Analysis of coal characteristics on the properties of coal water slurry preparation with different coal ranks OALib 0 ： 87 ： YUCHI Wei LI Baoqing LI Wen CHEN Haokan
The preparation of waste liquid coal water slurry WCWS can aid with environmental protection and resource utilization In this study xanthan gum was selected from 11 types of additives because
ABSTRACT The effects of coal characteristics on the properties of coal water slurry CWS were systemically studied using sixteen Chinese coals of different ranks from lignite to anthracite The correlation between coal properties and CWS characteristics were investigated by multivariate progressive regression analysis CWS properties examined in this study
Therefore coal organic solvent slurries usually showed higher viscosities compared to coal water slurry In addition coal slurries prepared by alcohols and cyclohexanone demonstrated lower settling rates but a high specific sedimentation volume presumably because these solvents swelled coal particles well and led to the formation of weak
Blast furnace sludge BFS from Ma anshan Iron and Steel Co Ltd was added in Dongkai fat coal to prepare coal water slurry Based on the analysis of physicochemical properties of BFS and fat
Coal water slurry or coal water mixture CWS or CWM is a complex solid liquid dispersion Several research works have been done concerning the production and use of CWSs being developed worldwide in several different governmental industrial and academic facilities In the present paper studies on the developments achieved in the past three decades with
Surface chemistry fundamentals in fine coal processing Janusz S Laskowski in The Coal Handbook Second Edition 2023 Coal water slurries Typically coal that has been mined and cleaned in a coal preparation plant is shipped either to a power generation plant thermal coal or to a coke making plant metallurgical coal
The preparation of waste liquid coal water slurry WCWS can aid with environmental protection and resource utilization In this study xanthan gum was selected from 11 types of additives because
Due to the concealment of the caving zone it is difficult to detect and grasp the diffusion law of the slurry in the voids of the gangue pile On the preparation of reasonable grouting filling materials a large scale three dimensional gangue grouting filling test system has been established to detect the slurry pressure and resistivity inside the gangue pile and
Three coal samples of different ranks were used to study the effect of coal blending on the preparation of Coal Water Slurry CWS The results show that by taking advantage of two kinds of coal
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