Influence of sewage sludge on the slurryability of coal–water slurry

Li, Weidong; Li, Weifeng; Liu, Haifeng; Yu, Zu-Guo

doi:10.1016/j.fuel.2009.05.002

Cited by 71 publications

(35 citation statements)

References 23 publications

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“…Since the main solids in CSS are coal, effective gasification also meets the industrial criterion. Preparation of CSS is the most important point for gasification technology, because only if a certain quantity of sewage sludge is mixed with CWS will the method be useful for sludge disposal [25].…”

Section: Introductionmentioning

confidence: 99%

The utilization of sewage sludge by blending with coal water slurry

Xie

et al. 2015

Fuel

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Section: Introductionmentioning

confidence: 99%

The utilization of sewage sludge by blending with coal water slurry

Xie

et al. 2015

Fuel

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“…But apparent viscosity of the modified sewage sludge reduces by different degrees, and apparent viscosity modified by NaOH reduced to smaller than 50% of the raw sewage sludge. This is because water surrounding the microbial cells is released in the alkaline environment because of the breakdown of cell wall and becomes free‐flowing water . In addition, destruction of sewage sludge floc structure by shear stress leads water bounded in capillary pore to detach from the capillary structure and become free‐flowing water, which can be deduced from the fact that pore diameter in the modified sewage sludge became lager as can be seen in Figs and .…”

Section: Resultsmentioning

confidence: 98%

Influence of sewage sludge on the rheological properties of petroleum coke–water slurry

Duan

Liu

et al. 2012

Asia-Pacific J Chem Eng

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Environmental concerns have stimulated proper treatment in utilizing sewage sludge derived from different industries. The main objective of the present study is to prepare high‐quality petroleum coke–sludge slurry (PCSS) with low viscosity and good stability by adding sewage sludge into petroleum coke–water slurry (PCWS), and a systematic investigation of the rheological properties of PCSS and PCWS, along with the sewage sludge, is conducted. The experimental results show that the PCWS is a dilatant fluid and has inferior stability; sewage sludge is a pseudoplastic fluid. As a certain amount of sewage sludge is added into PCWS to obtain PCSS, rheological properties are changed from a shear‐thickening property to a shear‐thinning property. Raw sewage sludge has higher bound water content and larger viscosity. Alkaline chemical additives are selected as sewage sludge modifiers to turn bound water into free‐flowing water and reduce the viscosity. The static stability of PCSS was analyzed by the water separation ratio. Results indicate that sewage sludge has a significant impact on the static stability of PCSS. Water separation ratio decreases and the static stability is improved after addition of the sewage sludge. The higher the sewage sludge amount, the better the static stability of the PCSS. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.

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“…Particle size distribution of finely ground products has some effects on slurrying ability of coal water slurry [31][32][33]. In this section, XLs were ground for 10 min and the mass fractions of finely ground product with À0.154 mm particle size fraction of ground XLs were obtained (see Table 3).…”

Section: Effects On the Finely Ground Productmentioning

confidence: 99%