Results 111 to 120 of about 36,391 (238)

Dynamic characterization of water hammer in gangue fly ash slurry pipelines during valve closure

Scientific Reports
In the process of coal-filling mining, the gangue fly-ash slurry (GFS) needs to be transported over a long distance to reach the gobs. The abrupt closure of the valve during the transportation of GFS can result in a water hammer that significantly ...
Yuxin Hao, Xuepeng Song, Chengshuai Wang, Bowen Fan, Kai Yang   +4 more
doaj   +1 more source

Hydrodesulfurization of chlorinized coal [PDF]

, 1983
A method of desulfurization is described in which high sulfur coals are desulfurized by low temperature chlorinolysis of coal in liquid media, preferably water, followed by hydrodesulfurization at a temperature above 500 C.
Kalvinskas, J. J., Rohatgi, N. K.
core   +1 more source

Energy efficient continuous flow ash lockhopper [PDF]

, 1989
The invention relates to an energy efficient continuous flow ash lockhopper, or other lockhopper for reactor product or byproduct. The invention includes an ash hopper at the outlet of a high temperature, high pressure reactor vessel containing heated ...
Collins, Earl R., Jr., Dubis, David, Suitor, Jerry W.   +2 more
core   +1 more source

Report of activities of the advanced coal extraction systems definition project, 1979 - 1980 [PDF]

During this period effort was devoted to: formulation of system performance goals in the areas of production cost, miner safety, miner health, environmental impact, and coal conservation, survey and in depth assessment of promising technology, and ...
Isenberg, L., Lavin, M. L.
core   +1 more source

Coal desulfurization by low temperature chlorinolysis, phase 1 [PDF]

The reported activity covers laboratory scale experiments on twelve bituminous, sub-bituminous and lignite coals, and preliminary design and specifications for bench-scale and mini-pilot plant ...
Andress, D. F., Ernest, J. B., Feller, D. R., Hsu, G. C., Kalvinskas, J. J.   +4 more
core   +1 more source

Appalachian Coalfield Delegation Position Paper on Sustainable Energy [PDF]

, 2007
Appalachian grassroots groups(with support provided by the DataCenter) release a scathing report on the impact of coal mining to the United Nations Commission on Sustainable Development. The Delegation created an historic moment with its powerful stories
Harvard Ayers, Jeff Boyer, Kim Rodgers, Lauren McGrath, Matthew Wasson, Patricia Feeney, Steve Owen   +6 more
core  

Experimental research on low and strength characteristics of coal slime based cemented filling material

Meitan kexue jishu
To study the flow and strength characteristics of coal slime based backfill materials, orthogonal tests were used to design one cemented backfill material combining coal slime, high-water-content materials, cement, and fly ash.
Baifu AN, Qiaomei YI, Xiang ZHAO, Weijian YU, Dongda WANG, Jiale WANG   +5 more
doaj   +1 more source

Optimizing coal water slurry concentration via synergistic coal blending and particle size distribution

Green Processing and Synthesis
This study explores strategies to enhance coal utilization efficiency, enable on-site coal conversion, transition thermal coal into raw coal, and improve the energy efficiency of coal water slurry (CWS) gasification.
Liu Ming, Li Hanxu
doaj   +1 more source

Experimental Study of the Influences of Temperature on the Properties of Particles in a Gasifier during Coal-Water Slurry Gasification. [PDF]

ACS Omega, 2020
Yu H, Wang Y, Liu E, Zhang G, Huang L, Liu L, Wu S, Shen B.   +7 more
europepmc   +1 more source

Slurry behaviour in separation devices [PDF]

, 1992
Four different modelling approaches for slurry behaviour in cyclones are considered: bulk flow models, a simple continuum model, hydrodynamic models and so-called wet granular flow models.
Jenkins, D.
core