scholarly journals Underground coal gasification: Development of theory, laboratory experimentation, interpretation, and correlation with the Hanna field tests: Final report

1987 ◽  
Author(s):  
R.D. Gunn ◽  
W.B. Krantz
Keyword(s):  
Coal Gasification ◽  
Field Tests ◽  
Final Report ◽  
Underground Coal Gasification ◽  
Laboratory Experimentation

scholarly journals Evaluation of Energy Recovery from Laboratory Experiments and Small-scale Field Tests of Underground Coal Gasification (UCG)

2015 ◽  
Vol 131 (5) ◽  
pp. 203-218 ◽  
Author(s):  
Faqiang SU ◽  
Ken-ichi ITAKURA ◽  
Gota DEGUCHI ◽  
Koutarou OHGA ◽  
Mamoru KAIHO
Keyword(s):  
Energy Recovery ◽  
Laboratory Experiments ◽  
Coal Gasification ◽  
Field Tests ◽  
Small Scale ◽  
Underground Coal Gasification ◽  
Scale Field

A Side Wall Burn Model for Cavity Growth in Underground Coal Gasification

1983 ◽  
Vol 105 (2) ◽  
pp. 145-155 ◽  
Author(s):  
T. L. Eddy ◽  
S. H. Schwartz
Keyword(s):  
Coal Gasification ◽  
Cavity Growth ◽  
Side Wall ◽  
Field Tests ◽  
Underground Coal Gasification ◽  
Convection Diffusion ◽  
Bituminous Coals ◽  
Thin Seam ◽  
Burn Through ◽  
Cavity Width

A mechanistic computer model is presented which predicts the 3-D cavity growth during the gasification phase of underground coal gasification. Developed for swelling bituminous coals, the model also obtains reasonable cavity width and length values for shrinking sub-bituminous coals. The model predicts cavity shape and burn-through times based on the coal properties, seam thickness, water reacting and the interwell distance. Employing a 2-D boundary layer model to determine the convective diffusion rate of oxygen to the reacting walls, it is found that natural convection diffusion must be included. The model includes flow in the injection region, the swirling, mixing effect in the cavity, and transitions from thick to thin seam geometry. Simulations of the Hanna II, Phase 2 and Pricetown I field tests, as well as a parametric study on Pittsburgh seam coal, are presented.

scholarly journals A Review of Underground Coal Gasification Field Tests Sponsored by the U.S. Department of Energy

2017 ◽  
Author(s):  
E Shafirovich ◽  
E B Jones ◽  
M Machado ◽  
J Mena ◽  
D Rodriguez ◽  
...  
Keyword(s):  
Coal Gasification ◽  
Field Tests ◽  
Department Of Energy ◽  
Underground Coal Gasification ◽  
The U.S

scholarly journals Small Scale Field Tests on Underground Coal Gasification at Surface Coal Mine in Hokkaido

2012 ◽  
Vol 77 (6) ◽  
pp. 435-437
Author(s):  
Kotaro Ohga ◽  
Kenichi Itakura ◽  
Gota Deguchi
Keyword(s):  
Coal Mine ◽  
Coal Gasification ◽  
Field Tests ◽  
Small Scale ◽  
Underground Coal Gasification ◽  
Surface Coal Mine ◽  
Scale Field

Underground Coal Gasification Research

1983 ◽  
Vol 105 (2) ◽  
pp. 165-169 ◽  
Author(s):  
G. J. Harloff
Keyword(s):  
Mathematical Modeling ◽  
Coal Gasification ◽  
Cavity Growth ◽  
Field Tests ◽  
Resource Recovery ◽  
Laboratory Research ◽  
Gas Composition ◽  
Underground Coal Gasification ◽  
Complex Processes ◽  
Research Studies

Recent successful field tests of underground coal gasification, UCG, have demonstrated the potential for UCG commercialization. This paper presents results of mathematical modeling and laboratory research studies which have been conducted to improve our understanding of the complex processes involved. These studies include: cavity growth including resource recovery, gas composition, and subsidence. Both single and multi-module results are presented.

scholarly journals Gas Production Strategy of Underground Coal Gasification Based on Multiple Gas Sources

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Duan Tianhong ◽  
Wang Zuotang ◽  
Zhou Limin ◽  
Li Dongdong
Keyword(s):  
Power Generation ◽  
Blast Furnace ◽  
Coal Gasification ◽  
Field Tests ◽  
Coke Oven ◽  
Gas Production ◽  
Underground Coal Gasification ◽  
Coke Oven Gas ◽  
Blast Furnace Gas ◽  
Converter Gas

To lower stability requirement of gas production in UCG (underground coal gasification), create better space and opportunities of development for UCG, an emerging sunrise industry, in its initial stage, and reduce the emission of blast furnace gas, converter gas, and coke oven gas, this paper, for the first time, puts forward a new mode of utilization of multiple gas sources mainly including ground gasifier gas, UCG gas, blast furnace gas, converter gas, and coke oven gas and the new mode was demonstrated by field tests. According to the field tests, the existing power generation technology can fully adapt to situation of high hydrogen, low calorific value, and gas output fluctuation in the gas production in UCG in multiple-gas-sources power generation; there are large fluctuations and air can serve as a gasifying agent; the gas production of UCG in the mode of both power and methanol based on multiple gas sources has a strict requirement for stability. It was demonstrated by the field tests that the fluctuations in gas production in UCG can be well monitored through a quality control chart method.

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