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Wet carbonization of lump-size low-rank coals by a novel non-slurry approach: Progress report for the period August-October 1986

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Two tests were conducted in the process research unit (PRU) at nominal operating conditions of 650/sup 0/F and 30 minutes residence time with North Dakota Indianhead lignite. During the first test, the targeted operating temperature was not attained due to heat losses and the inability of the steam boiler to deliver sufficient heat to the reactor. After modifications were made to the boiler and additional insulation was installed, the second test was successfully conducted at the targeted temperature and residence time. Two hours of steady-state operation were achieved. Nine successful tests were conducted in the free-fall devolatilization reactor with raw and wet-carbonized low-rank coals. The tests were conducted at a temperature and pressure of 1300/sup 0/F and 500 psig, respectively, with a steam-hydrogen mixture (50 mol % hydrogen). About 150 grams of coal were fed during the 60-minute duration of the tests. The product solid, liquid, and gas samples are being analyzed. Also, one successful thermobalance test was conducted with coal that had been wet-carbonized in the PRU at 650/sup 0/F with a residence time of 30 minutes. Anaerobic digestion tests continued with filtered product water from the batch wet carbonization unit and the PRU. The objective of these tests is to determine the preferred reactor configuration and operating conditions for producing methane from and reducing the chemical oxygen demand of the wet-carbonization product water.

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Last Updated September 29, 2016, 16:20 (EST)
Created September 29, 2016, 16:20 (EST)
Citation Lau, F.S.; Roberts, M.J.; Srivastava, V.J.; Mensinger, M.C.; Janulis, J.A.; Rue, D.M. ---- Roy Long, Wet carbonization of lump-size low-rank coals by a novel non-slurry approach: Progress report for the period August-October 1986, 2016-09-29, https://edx.netl.doe.gov/dataset/wet-carbonization-of-lump-size-low-rank-coals-by-a-novel-non-slurry-approach-progress-report-for-0
Netl Product yes
Poc Email Roy.long@netl.doe.gov
Point Of Contact Roy Long
Program Or Project KMD
Publication Date 1986-11-1