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Fuel spray and atomization characteristics play an important role in the performance of internal combustion engines and many applications of industry. In drop aerobreakup, there are two main breakup modes: general bag breakup and shear breakup, which are induced by Rayleigh-Taylor instability and Kelvin-Helmholtz instability, respectively. Influence of surfactant on drop deformation and breakup is...
Coal water slurry (CWS) with high solid content and low viscosity can allow for efficient and environmentally friendly gasification. In the process of CWS preparation, water will enter pores of coal particle to form inner water, resulting in a decrease in free water among particles and an increase in viscosity. However, pre-absorption of moisture from air was found to result in a sharp decrease of...
The Opposed Multi-Burner (OMB) gasifier has been widely used in commercial plants throughout China. A comprehensive three-dimensional numerical model is developed for the simulation of an OMB gasifier. In this model, the realizable k–ε turbulence model is applied to close the Reynolds-averaged Navier–Stokes equation and the eddy-dissipation-concept model is used to simulate the homogeneous reactions...
The utilization of oily sludge produced from refinery processes was evaluated in this study. Oily sludge was added to coal–water slurry (CWS) in different ways to prepare desirable coal–oily-sludge slurry (COSS). The slurryability and rheological characteristics of COSS were investigated and compared to CWS. The viscosity and yield stress of COSS sharply decrease with increasing the addition of oily...
In this study, the co-slurryability of hazardous solid waste—oily sludge and high-sulfur-petroleum coke (HSPC), in an oil refinery was evaluated. The effects of pre-treatment and method of adding oily sludge, on the co-slurryability of coke-oily-sludge slurry (COSS); maximum solids loading, rheological characteristics, and stability of slurry, were thoroughly investigated. The experimental results...
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