Zobrazeno 1 - 10
of 64
pro vyhledávání: '"E.N. Givens"'
Autor:
B Demirel, E.N Givens
Publikováno v:
Fuel. 79:1975-1980
Phosphomolybdic acid (PMA) and cobalt, nickel and potassium phosphomolybdates have been found very active catalyst precursors for the conversion of coal- and petroleum-derived resids when they are impregnated onto coal and Al 2 O 3 . They are mostly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f9abe4d06e1103674d566c704d1296a
https://doi.org/10.1016/s0016-2361(00)00056-9
https://doi.org/10.1016/s0016-2361(00)00056-9
Autor:
J.E. Miller, H. P. Stephens, F.P. Burke, E.N. Givens, F.L. Derbyshire, Richard A. Winschel, G.A. Robbins, J. Hu, M. Peluso, T.L.K. Lee
In 1991, the Department of Energy initiated the Advanced Liquefaction Concepts Program to promote the development of new and emerging technology that has potential to reduce the cost of producing liquid fuels by direct coal liquefaction. Laboratory r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81c71b8c69522ae1daa98652f9a2e611
https://doi.org/10.2172/282822
https://doi.org/10.2172/282822
Publikováno v:
MRS Proceedings. 368
Nanoscale and well dispersed catalyst particles offer a large number of advantages: no diffusion resistance, easy accessibility to reactants, and a large number of active sites. In coal liquefaction, highly dispersed catalysts are especially needed b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af2727b11c6a649635f7f33120054f4b
https://doi.org/10.1557/proc-368-27
https://doi.org/10.1557/proc-368-27
Autor:
R. Sivasubramanian, E.N. Givens
This report summarizes the work conducted under ICRC's Program Area 12.1.7, on the effects of staged vessels on dissolver performance. Results showed that operating the dissolvers in series decreased the preasphaltenes yield. From a process viewpoint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6a3bb24f162b0bc703d909fad9ce1f0
https://doi.org/10.2172/6944961
https://doi.org/10.2172/6944961
A commercial coal liquefaction plant will employ vertical tubular reactors feeding slurry and gas concurrently upward through these vessels. In the SRC-I plant design the reactor is essentially an empty vessel with only a distributor plate located ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e528833a9f45132ddd8eff7762ebd117
https://doi.org/10.2172/6896664
https://doi.org/10.2172/6896664
Autor:
R.N. Miller, F.K. Schweighardt, D. Garg, A.R. Tarrer, D.S. Hoover, P. Luckie, J.A. Guin, C.W. Curtis, E.N. Givens
An extensive research program was conducted to ascertain ways to improve oil yields and process economics of direct coal liquefaction. The effects of removing heteroatoms from the solvent, pretreating coal by several techniques (including solvent ext
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1448ad9cdca04d96a5e233a89ae7dcc
https://doi.org/10.2172/6436726
https://doi.org/10.2172/6436726
Results from screening studies showed that the pyrite samples separated from various coal seams had similar catalytic activity. The addition of all the pyrite samples to feed slurry increased conversion of coal and production of oil. A sample of fusi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9fd9cf52f261d0f297b1bc56d7930ea
https://doi.org/10.2172/6387505
https://doi.org/10.2172/6387505
Autor:
F.K. Schweighardt, D. Garg, W.J. Huang, J.H. Clinton, J.A. Guin, K. Shridharani, A.R. Tarrer, E.N. Givens, Christine W. Curtis
This report covers results from both tubing-bomb experiments and continuous PDU runs. The following materials were evaluated in the PDU on Elkhorn No. 2 coal from Floyd County, Kentucky: Molybdic oxides; iron oxide; pyrite; pyrite/iron oxide mixture,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::073bc4896ba6cef3a7d31fbe8123876a
https://doi.org/10.2172/6517980
https://doi.org/10.2172/6517980
We have attempted to determine the hydrodynamic effects of various reactor configurations on coal liquefaction, to help select the optimal reactor configuration and to provide additional understanding of coal liquefaction reaction kinetics, which can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7581b8e235cf97662a7a87e23a77e181
https://doi.org/10.2172/6868795
https://doi.org/10.2172/6868795