Gasification in-situ

Britten. J. A., and Thorsness. C. B. 1989. A model for cavity growth and resource recovery during underground coal gasification. In Situ, 13 1-53. 

Non-conventional gas is natural gas found in unusual underground conditions, such as very impermeable reservoirs which require massive stimulation in order to be recovered, or in underground occurrences of gas hydrates, or dissolved in formation water, or coal-bed methane, or gas from in-situ gasification of coal. 

Poland 9.6 Biomass, hard coal, lignite, NG, wind (in-situ coal gasification considered) 8-13... 

M. Greenfeld described unique laboratory experiments designed to stimulate and understand the complex chemistry of in-situ coal gasification. Developed at the Alberta Research Council, the gasification simulator was heavily instrumented with calorimeters and gas chromatographs to determine the enthalpy, composition, and kinetics of formation of the product gases. Computer techniques were used to calculate mass and heat balances and to test kinetic models. 

OIL SAND - FIRE /STEAM FLOOD COAL-IN SITU GASIFICATION SHALE - IN SITU RETORT... 

In actual in-situ coal gasification, numerous processes, i.e. oxidation, reduction, thermal cracking and a variety of catalytic as well as non-catalytic reactions, occur in overlapping zones, and to explore the chemistry of these reactions as single or consecutive unit processes is virtually impossible. It is, however, feasible to study the individual reactions under controlled conditions by simulating in-situ gasification in the laboratory. 

Berkowitz, N. and Brown, R.A.S., In-Situ Coal Gasification The Forestburg (Alberta) Field Test", The Canadian Mining and Metallurgical Bulletin (December 1977) ... 

Bio-Electrics, Incorporated, has developed the Electrofrac Detoxification System to treat hazardous contaminants in soil. The system, which was developed from gasification research, uses electrodes placed in soil to heat the site. There are potential applications of this technology for removal of volatile organic compounds (VOCs), pyrolysis of non-VOCs, treatment of organic residues, and in situ vitrification of soils and asbestos. There have been bench-scale tests of the technology for remediation applications. 

The RIMS library/database contains many technologies that can be operated in a pyrolysis mode. They include both in situ and ex situ methods, vitrification techniques, as well as technologies used for gasification. A list of these technologies can be found by searching under the technology category pyrolysis. ... 

Synfuels, In Situ Coal Gasification, Heavy Oil and Heavy... 

Coal Gasification Underground In this process, coal is not blasted and removed from underground, but is transformed "in situ" into gas, which is brought to the surface to serve either for heating or illumination. Although this process has been known for nearly a century, it is not much used, except in Russia... 

Underground coal gasification The production of recoverable and useful combustible gases from the in situ heating of subsurface coal deposits. 

Degasification of coal, gas from Devonian shale, gas from tight formations, gas from geopressured zones, gas from biomass and gas from in-situ coal gasification, etc. 

The steady-state permeation model of in situ coal gasification is presented in an expanded formulation which includes the following reactions combustion, water-gas, water-gas shift, Boudouard, methanation and devolatilization. The model predicts that substantial quantities of unconsumed char will be left in the wake of the burn front under certain conditions, and this result is in qualitative agreement with postburn studies of the Hanna UCG tests. The problems encountered in the numerical solution of the system equations are discussed. 

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