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Επίδειξη του Tίτλου: | |
Doc ID | PAPYR-2876 |
Doc Type | Report |
Author | Vasalos, Iacovos A. |
Title | Study of ebullated bed fluid dynamics for H-Coal. Quarterly progress report No. 1, August 22 - November 30, 1977 |
Related Documents | 1. Study of ebullated bed fluid dynamics for H-Coal. Quarterly progress report No. 4, September 1 - November 30, 1978 (1978) 2. Study of ebullated bed fluid dynamics for H-Coal. Quarterly progress report No. 3, March 1, 1978 - May 31, 1978 (1978) 3. Study of ebullated bed fluid dynamics for H-Coal. Quarterly progress report No. 2, December 1, 1977 - February 28, 1978 (1978) 4. Study of ebullated bed fluid dynamics for H-Coal. Quarterly progress report No. 6, March 1 - May 31, 1979 (1979) |
Pages | 1 - 22 |
Issue | 1 |
Year | 1977 |
Organization | Amoco Research Center |
Abstract | The H-Coal process, developed by Hydrocarbon Research, Incorporated (HRI), involves the direct catalytic hydroliquefaction of coal to low-sulfur boiler fuel or synthetic crude oil. The 200-600 ton-per-day H-Coal pilot plant is being constructed next to the Ashland Oil, Incorporated refinery at Catlettsburg, Kentucky under ERDA contract to Ashland Synthetic Fuels, Incorporated. The H-Coal ebullated bed reactor contains at least four discrete components: gas, liquid, catalyst, and unconverted coal and ash. Because of the complexity created by these four components, it is desirable to understand the fluid dynamics of the system. The objective of this program is to establish the dependence of the ebullated bed fluid dynamics on process parameters. This will permit improved control of the ebullated bed reactor. The work to be performed is divided into three parts: review of prior work, cold flow model construction and operations, and mathematical modelling. The objective of this quarterly progress report is to outline progress in the first two parts during the first three months of the project. |
Keywords | Coal liquefaction ; Liquefaction ; Thermochemical processes ; |
Other Author(s) | Bild, E. M. / Amoco Research Center Evans, T. D. / Amoco Research Center Shields, S. E. / Amoco Research Center Tatterson, David F. / Amoco Research Center Wallin, C. C. / Amoco Research Center |
Language | English" |
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Document title
Methanol-to-gasoline vs. DME-to-gasoline. II: Process comparison and analysisAuthors
SUNGGYU LEE ; GOGATE M. ; KULIK C. J. ;Affiliations
Univ. Akron, dep. chemical eng., process res. cent., Akron OH 44325-3906, ETATS-UNISAbstract
Methanol can be converted into gasoline boiling range hydrocarbons over zeolite ZSM-5 catalyst using the Mobil MTG process. Methanol feed in the MTG process can be derived from coal or natural gas based syngas. The Mobil MTG process involves the conversion steps of syngas-to-methanol and methanol-to-gasoline. Dimethyl Ether (DME), a product of methanol dehydrocondensation, is an intermediate species in the methanol-to-gasoline conversion. Syngas can be directly converted to DME using the Liquid Phase Dimethyl Ether Synthesis (LP-DME) process developed at the University of Akron in conjunction with Electric Power Research Institute. This direct one-step conversion of syngas-to-DME can then be an ideal front end for further conversion to gasoline. This substitution (syngas-to-methanol by syngas-to-DME) is justified because DME results in an identical hydrocarbon distribution over the ZSM-5 catalyst as methanol. The DME-to-Gasoline (DTG) process thus involves the conversion steps of syngas-to-DME and DME-to gasoline. The UA/EPRI DTG process offers advantages over the Mobil MTG process in several areas. These include heat duty and heat of reaction, adiabatic temperature rise, hydrocarbon product yield and selectivity, syngas conversion, and overall process efficiency. The conceptual benefits of the DTG process have been demonstrated experimentally in a fluidized bed reactor system operative at the University of Akron. The salient features of the DTG process and process comparison to the Mobil MTG process are discussed in this paper."- Details
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"USAF Progresses On Alternative Fuels
Oct 5, 2009
By Graham Warwick |
Under congressional mandate to buy greener fuels, the Air Force is putting the finishing touches to a greenhouse-gas life-cycle analysis model that will allow it to calculate the “well-to-wake” carbon footprint for each batch of fuel. Harrison (Bill Harrison, deputy director of the Air Force’s new Energy Office) says benchmark studies are under way for coal-and-biomass-to-liquid F-T jet fuel and soy to HRJ.
So: "Despite the growing interest in biofuels, DESC has several pilot programs under way to produce synthetic JP-8 from coal and natural gas using the F-T process, Huntley says."
And, note that, although they are working on the profoundly wasteful concept of "carbon capture and sequestration", they are also at work on the much more forward-thinking concept of Carbon Dioxide recycling via "hydrotreated renewable jet ... fuels from cellulosic feedstocks".
As we've documented via more than several authoritative citations, botanical cellulose can be processed, along with coal, in a coal-to-liquid production facility of appropriate design and specification, and thereby provide an inherent, integral route of Carbon Dioxide recycling for a coal-to-liquid conversion industry.
