scholarly journals Underground Coal Gasification: A Regulatory Framework for Alberta

2014 ◽  
Vol 51 (3) ◽  
pp. 525
Author(s):  
Astrid Kalkbrenner
Keyword(s):  
Coal Gasification ◽  
Regulatory Framework ◽  
Approval Process ◽  
Underground Coal Gasification ◽  
Coal Seams ◽  
Clean Coal ◽  
Coal Deposits ◽  
The World ◽  
Recent Developments ◽  
Coal Technology

Underground Coal Gasification (UCG) is a new emerging clean coal technology. It holds promise for reaching and making use of very deep coal seams that technically could not otherwise have been mined at these depths. UCG technology and knowledge developed significantly during the 20th century. Countries around the world with large coal deposits sustain and promote UCG research and launch projects with the intention to commercially deploy UCG. Alberta currently hosts two UCG projects, and a third project is under consideration. The development of these projects suggested the need for a UCG specific regulatory approval process. In 2011, Alberta enacted specific UCG legislation. This article deals with recent developments in UCG technology and its regulations. The aim of this article is to present Alberta’s current UCG regulatory framework as a model for other jurisdictions.

Underground coal gasification: A new clean coal utilization technique for India

Energy ◽  
2007 ◽  
Vol 32 (11) ◽  
pp. 2061-2071 ◽  
Author(s):  
A KHADSE ◽  
M QAYYUMI ◽  
S MAHAJANI ◽  
P AGHALAYAM
Keyword(s):  
Coal Gasification ◽  
Underground Coal Gasification ◽  
Clean Coal

The Change of Structural and Thermal Properties of Rocks Exposed to High Temperatures in the Vicinity of Designed Geo-Reactor / Zmiany właściwości strukturalnych i cieplnych skał poddanych wysokim temperaturom w rejonie projektowanego georeaktora

2013 ◽  
Vol 58 (2) ◽  
pp. 465-480 ◽  
Author(s):  
Piotr Małkowski ◽  
Zbigniew Niedbalski ◽  
Joanna Hydzik-Wiśniewska
Keyword(s):  
Physical Properties ◽  
High Temperatures ◽  
Laboratory Tests ◽  
Coal Gasification ◽  
Underground Coal Gasification ◽  
Specific Density ◽  
Temperature Conductivity ◽  
Underground Gasification ◽  
Coal Deposits ◽  
Heat Diffusivity

Among the main directions of works on energy acquisition, there is the development and application of the technology of underground gasification of coal deposits (UCG). During the process of deposit burning and oxidation, there is also impact of temperatures exceeding 1000°C on rocks surrounding the deposit. As a result of subjecting carboniferous rocks to high temperatures for a prolonged period of time, their structure will change, which in turn will result in the change of their physical properties. Due to the project of underground coal gasification, as performed in Poland, laboratory tests are currently under way to a broad extent, including physical properties of carboniferous rocks subjected to high temperatures. The article presents results of laboratory tests of rocks surrounding the designed geo-reactor: changes to bulk density, specific density and porosity due to high temperature, and confronts the above results with the results of tests of thermal conductivity, specific heat and heat diffusivity (temperature conductivity) of the rocks. The mineralogical investigations were presented too.

scholarly journals Graphical Analysis of Gasification Processes

2021 ◽  
Author(s):  
Shehzaad Kauchali
Keyword(s):  
Coal Gasification ◽  
Graphical Representation ◽  
Graphical Analysis ◽  
Underground Coal Gasification ◽  
Reactor Kinetics ◽  
Coal Technology ◽  
Indispensable Tool ◽  
Flowsheet Development ◽  
Energy Balances ◽  
Excellent Tool

Gasification processes incorporate many reactions that are fairly complex to analyse making their design difficult. In this chapter it is shown that general gasification systems are limited by consideration of mass and energy balances only. Here, a ternary Carbon-Hydrogen-Oxygen diagram is developed to represent gasification processes. The diagram incorporates basic chemistry and thermodynamics to define a region in which gasification occurs. The techniques are further validated from data obtained from pilot or laboratory experiments available in literature. In this chapter we develop graphical representation for sawdust gasification and underground coal gasification (UCG), a clean coal technology. The methods described allow for further analysis without considerations to thermodynamic equilibrium, reactor kinetics, reactor design and operation. This analysis is thus an indispensable tool for flowsheet development using gasification and an excellent tool for practitioners to rapidly understand gasification processes.

scholarly journals Underground coal gasification technology impact on coal reserves in Colombia

2013 ◽  
Vol 22 (35) ◽  
pp. 9
Author(s):  
John William Rosso Murillo
Keyword(s):  
Energy Production ◽  
Coal Gasification ◽  
Underground Coal Gasification ◽  
World Energy ◽  
The World ◽  
Coal Reserves ◽  
Gasification Technology ◽  
Available Volume

<p>In situ coal gasification technology (Underground Coal Gasification–UCG–) is an alternative to the traditional exploitation, due to it allows to reach the today’s inaccessible coal reserves’ recovery, to conventional mining technologies. In this article I answer the question on how the today’s reserves available volume, can be increased, given the possibility to exploit further and better the same resources. Mining is an important wealth resource in Colombia as a contributor to the national GDP. According with the Energy Ministry (Ministerio de Minas y Energía) [1] mining has been around 5% of total GDP in the last years. This is a significant fact due to the existence of a considerable volume of reserves not accounted for (proved reserves at year 2010 were 6.700 million of tons. Source: INGEOMINAS and UPME), and the coal future role’s prospect, in the world energy production.</p>

scholarly journals Analysis of Risk Factors for Underground Coal Gasification

2019 ◽  
Vol 27 (4) ◽  
pp. 227-235
Author(s):  
Erika Škvareková ◽  
Marianna Tomašková ◽  
Gabriel Wittenberger ◽  
Štefan Zelenák
Keyword(s):  
Hydrogen Sulphide ◽  
Regular Education ◽  
Coal Gasification ◽  
Slovak Republic ◽  
Primary Energy ◽  
Hazard Identification ◽  
Underground Coal Gasification ◽  
Underground Gasification ◽  
Coal Deposits ◽  
And Training

AbstractThe purpose of this article is to determine the environmental impacts of underground gasification on the population and to analyze the risk of underground coal gasification (UCG) activities using selected risk assessment methods. Coal gas is a regular part of coal deposits and its extraction also allows the use of coal deposits that cannot be extracted by traditional methods. These technologies bring both positive and negative aspects. The paper points out the risk analysis, hazard identification and assessment during the operation of UCG technology using a risk graph and a risk matrix. Identified risks to workers that cannot be reduced should be taken into consideration and appropriate safeguard should be used. For each risk, it is necessary to inform employees about regular education and training. From worldwide experience with this technology, it is possible to analyze risks in Slovakia. Actual gasification produces polluting gases such as carbon dioxide, carbon monoxide, hydrogen sulphide, hydrogen sulphide, nitrogen oxides, tar and ash, and creates a risk that may occur on and under the surface of the site depending on the geological and hydrogeological structure of the deposits. Possible measures to mitigate the adverse effects are proposed for the implementation of this technology. Coal is still one of the main domestic primary energy sources. Currently, only 5 out of 19 deposits in the Slovak Republic are used. Underground gasification could increase the use of Slovak coal and brown coal deposits.

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