Matches in SemOpenAlex for { <https://semopenalex.org/work/W2915316944> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2915316944 abstract "The products of coal pyrolysis play an important part in determining the ultimate products - especially the hydrocarbons - recovered from an underground coal gasification (UCG) system. Thus some type of pyrolysis submodel is necessary to successfully model a UCG system. Recently we have done a series of experiments to provide more realistic pyrolysis data. In these experiments, coal is continuously fed onto a hot bed of char, and the pyrolysis products are swept down through the hot char before being removed from the reactor. The experiments have been done at various temperatures and pressures (500 to 900/sup 0/C and 100 to 600 kPa). Methane production was found to reach a peak at 800/sup 0/C and the effect of the modest pressure change from 100 to 600 kPa was small. The methane produced is threatened by system temperatures much above 800/sup 0/C. Another part of the UCG modeling problem is in simulating the growth of the burn cavity. We have improved our cavity growth model by incorporating in it many of the key features observed in the large block (LBK) experiments done near Centralia, Washington, in 1981-1982. The model divides the cavity into three zones consisting of ash, rubble, andmore » void, with provision for movement of solids between zones. Roof and walls of the cavity regress at rates dependent on fluid velocities and temperatures. The fluid velocities are determined by cavity geometry in conjunction with calculated temperatures and injection rates, assuming Darcy flow in a nonisotropic permeable medium. The fluid velocities along with the rubble-forming rates are input to a chemical/thermal model which determines product composition and cavity temperature. We have made a number of runs with our improved cavity growth model, matching LBK data, studying sensitivity to variations in model parameters and operational parameters, and calculating the possible performance of the upcoming Centralia partial-seam CRIP test.« less" @default.
- W2915316944 created "2019-03-02" @default.
- W2915316944 creator A5024375029 @default.
- W2915316944 creator A5052661748 @default.
- W2915316944 date "1983-08-23" @default.
- W2915316944 modified "2023-09-27" @default.
- W2915316944 title "LLNL underground coal gasification project. Quarterly progress report, April-June 1983" @default.
- W2915316944 hasPublicationYear "1983" @default.
- W2915316944 type Work @default.
- W2915316944 sameAs 2915316944 @default.
- W2915316944 citedByCount "0" @default.
- W2915316944 crossrefType "journal-article" @default.
- W2915316944 hasAuthorship W2915316944A5024375029 @default.
- W2915316944 hasAuthorship W2915316944A5052661748 @default.
- W2915316944 hasConcept C108615695 @default.
- W2915316944 hasConcept C127313418 @default.
- W2915316944 hasConcept C127413603 @default.
- W2915316944 hasConcept C178790620 @default.
- W2915316944 hasConcept C185592680 @default.
- W2915316944 hasConcept C187320778 @default.
- W2915316944 hasConcept C199289684 @default.
- W2915316944 hasConcept C2777929537 @default.
- W2915316944 hasConcept C2778601115 @default.
- W2915316944 hasConcept C2779970684 @default.
- W2915316944 hasConcept C36759035 @default.
- W2915316944 hasConcept C39432304 @default.
- W2915316944 hasConcept C516920438 @default.
- W2915316944 hasConcept C518851703 @default.
- W2915316944 hasConcept C548081761 @default.
- W2915316944 hasConcept C78762247 @default.
- W2915316944 hasConceptScore W2915316944C108615695 @default.
- W2915316944 hasConceptScore W2915316944C127313418 @default.
- W2915316944 hasConceptScore W2915316944C127413603 @default.
- W2915316944 hasConceptScore W2915316944C178790620 @default.
- W2915316944 hasConceptScore W2915316944C185592680 @default.
- W2915316944 hasConceptScore W2915316944C187320778 @default.
- W2915316944 hasConceptScore W2915316944C199289684 @default.
- W2915316944 hasConceptScore W2915316944C2777929537 @default.
- W2915316944 hasConceptScore W2915316944C2778601115 @default.
- W2915316944 hasConceptScore W2915316944C2779970684 @default.
- W2915316944 hasConceptScore W2915316944C36759035 @default.
- W2915316944 hasConceptScore W2915316944C39432304 @default.
- W2915316944 hasConceptScore W2915316944C516920438 @default.
- W2915316944 hasConceptScore W2915316944C518851703 @default.
- W2915316944 hasConceptScore W2915316944C548081761 @default.
- W2915316944 hasConceptScore W2915316944C78762247 @default.
- W2915316944 hasLocation W29153169441 @default.
- W2915316944 hasOpenAccess W2915316944 @default.
- W2915316944 hasPrimaryLocation W29153169441 @default.
- W2915316944 hasRelatedWork W134306622 @default.
- W2915316944 hasRelatedWork W1502000689 @default.
- W2915316944 hasRelatedWork W1509296414 @default.
- W2915316944 hasRelatedWork W1533556616 @default.
- W2915316944 hasRelatedWork W1580981920 @default.
- W2915316944 hasRelatedWork W1591155904 @default.
- W2915316944 hasRelatedWork W167925656 @default.
- W2915316944 hasRelatedWork W1982492955 @default.
- W2915316944 hasRelatedWork W204455236 @default.
- W2915316944 hasRelatedWork W212683271 @default.
- W2915316944 hasRelatedWork W2130161100 @default.
- W2915316944 hasRelatedWork W242114709 @default.
- W2915316944 hasRelatedWork W282590149 @default.
- W2915316944 hasRelatedWork W30410157 @default.
- W2915316944 hasRelatedWork W3145908487 @default.
- W2915316944 hasRelatedWork W49080373 @default.
- W2915316944 hasRelatedWork W62074837 @default.
- W2915316944 hasRelatedWork W73943675 @default.
- W2915316944 hasRelatedWork W82924668 @default.
- W2915316944 hasRelatedWork W210096531 @default.
- W2915316944 isParatext "false" @default.
- W2915316944 isRetracted "false" @default.
- W2915316944 magId "2915316944" @default.
- W2915316944 workType "article" @default.