Studies on Preparation of Coal Water Slurry Using a Natural Additive

Senapati, Pradipta Kumar; Das, B.; Nayak, A. Chetan; Mishra, Pramila Kumari

doi:10.1080/15567030701268484

Cited by 26 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interaction between solid particles increases. The gap between particles decreases and settling velocity of solid particles reduces . Accordingly, WSR reduces and the static stability of PCSS improves.…”

Section: Resultsmentioning

confidence: 99%

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

Duan

Liu

et al. 2012

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Duan

Liu

et al. 2012

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…It was observed that the addition of coal with a high grade can improve the slurryability of LGC [45]. Senapati et al (2008) analyzed the rheological behavior of a CWS using a natural additive. Two samples with different ash contents were obtained from the Talcher coal field in Orissa, India.…”

Section: Cws Researchmentioning

confidence: 99%

“…The authors found that the CWS in the presence of natural additives exhibited Bingham plastic behavior. The static stability CWS was achieved 3 to 4 weeks after employing the additive [46].…”

Section: Cws Researchmentioning

confidence: 99%

Potential of Coal–Water Slurries as an Alternative Fuel Source during the Transition Period for the Decarbonization of Energy Production: A Review

Nunes

2020

Applied Sciences

View full text Add to dashboard Cite

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 regard to the field mentioned above are systematically reviewed, with particular regard to several different aspects during the combustion process. The structure and properties of the coal are highlighted, as are the different additives used and their adaptability with different types of coal, where the particle size distributions are of great importance in determining both the slurryability of coal and the rheological behavior of a produced CWS for its intended characteristics. At a time when there is much debate about the end of the age of coal as a primary source of thermal and electrical energy, alternative forms of use that can contribute to the reduction of pollutant emissions, as well as particles, in the atmosphere offer alternatives that may allow us to continue using coal, at least during this transition period until a viable alternative is found. In-depth knowledge of these coal slurries may allow, in the future, the development of similar products produced from fuels derived from biomass, such as charcoal or torrefied biomass.

show abstract

“…Water is essential to the operation of these plants. It's quality affects the normal activity of a coal preparation plant and influences water and energy conservation, environmental protection, and economic and social benefits (Senapati et al, 2008). Conserving water requires treating and circulating it before use.…”

Section: Introductionmentioning

confidence: 99%

A new method to evaluate the performance of slime water treatment

Gan

2016

Energy Sources, Part A: Recovery, Utilization, and Environmenta

View full text Add to dashboard Cite

Slime water is used repeatedly and its treatment is very essential in coal preparation plants. A new method called fractal dimension is proposed to evaluate the performance of slime water treatment. According to settling experiments, the settling process of slime water can be divided into two phases. In the first phase, water hardness is less than 50 DH°and settling velocity is fast. In the second phase, the water hardness is over 50 DH°and settling velocity is slow. Under different water hardness levels, the variation trends of the luminosity of the supernatant liquor, settling velocity, and fractal dimensions are consistent.

show abstract

Studies on Preparation of Coal Water Slurry Using a Natural Additive

Cited by 26 publications

References 6 publications

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

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

Potential of Coal–Water Slurries as an Alternative Fuel Source during the Transition Period for the Decarbonization of Energy Production: A Review

A new method to evaluate the performance of slime water treatment

Contact Info

Product

Resources

About