Advancement of flash hydrogasification: Task VIII. Performance testing
This topical report documents the technical effort required to investigate and verify the reaction chemistry associated with the Rockwell Advanced Flash Hydropyrolysis (AFHP) concept for the production of substitute natural gas (SNG) from coal. The testing phase of the program included 5 preburner performance evaluation tests (14 test conditions) and 11 coal-fed reactor tests (19 test conditions). The reactor test parameters investigated spanned exist temperatures from 1775 to 2050/sup 0/F, residence times from 2 to 8 s, inlet gas-to-coal ratios from 0.15 to 0.27 lb-mole/lb, and inlet-steam-to-H/sub 2/ mole ratios from 0.15 to 0.86. One test was conducted to investigate ... continued below
Falk, A.Y.; Schuman, M.D. & Kahn, D.R. June 1, 1986.
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Rockwell International Corp., Canoga Park, CA (USA). Rocketdyne Div.
Place of Publication: United States
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This topical report documents the technical effort required to investigate and verify the reaction chemistry associated with the Rockwell Advanced Flash Hydropyrolysis (AFHP) concept for the production of substitute natural gas (SNG) from coal. The testing phase of the program included 5 preburner performance evaluation tests (14 test conditions) and 11 coal-fed reactor tests (19 test conditions). The reactor test parameters investigated spanned exist temperatures from 1775 to 2050/sup 0/F, residence times from 2 to 8 s, inlet gas-to-coal ratios from 0.15 to 0.27 lb-mole/lb, and inlet-steam-to-H/sub 2/ mole ratios from 0.15 to 0.86. One test was conducted to investigate the effect of CH/sub 4/ addition to the hydrogen feed stream (22 mole % CH/sub 4/), with subsequent partial oxidation of the CH/sub 4/ to CO/sub x/ in the preburner system, on the AFHP reactor chemistry and product gas composition. Overall carbon conversion and total carbon conversion to gases (namely, CH/sub 4/, C/sub 2/H/sub 6/, CO, and CO/sub 2/) ranged from 53 to 68% and 35 to 68%, respectively. The gas produced was primarily CH/sub 4/ (31 to 53% carbon conversion to CH/sub 4/). Carbon conversion to total liquids was strongly dependent on reactor exit temperature and to a lesser extent on residence time, with values ranging from about 20% to 1775/sup 0/F and 2-S residence time to zero at 1975/sup 0/F and residence times greater than 5 s. Carbon conversion to C/sub 6/H/sub 6/ asd high as 11.2% was obtained. Carbon conversion to CO/sub x/ ranged from 3.5 to 29.4%. Methane addition was found not to significantly affect the AFHP reactor chemistry. As a result of this program, Rockwell has expanded its data base and significantly improved its correlation model describing the processes occurring during flash hydropyrolysis. The correlation provides an excellent tool for subsequent process evaluations to determine the economic potential of the Rockwell coal hydrogasification process. 23 refs., 51 figs., 31 tabs.
NTIS, PC A19/MF A01; 1.
- Carbonaceous Materials
- Chemical Reactions
- Coal Gasification
- Coal Liquefaction
- Energy Sources
- Experimental Data
- Flash Heating
- Flash Hydropyrolysis Process
- Fossil Fuels
- Functional Models
- Hydrogen Compounds
- Hydrogen Sulfides
- Mathematical Models
- Nitrogen Compounds
- Nitrogen Hydrides
- Numerical Data
- Organic Compounds
- Process Development Units
- Pyrolysis Products
- Pyrolytic Gases
- Regression Analysis
- Sulfur Compounds
- Thermochemical Processes 010404* -- Coal, Lignite, & Peat-- Gasification
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- June 1, 1986
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- Feb. 4, 2018, 10:51 a.m.
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- March 20, 2018, 8:33 p.m.
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Falk, A.Y.; Schuman, M.D. & Kahn, D.R. Advancement of flash hydrogasification: Task VIII. Performance testing, report, June 1, 1986; United States. (digital.library.unt.edu/ark:/67531/metadc1069650/: accessed February 18, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.