Laboratory scale studies on simulated underground coal gasification of high ash coals for carbon-neutral power generation

Energy ◽  
2012 ◽  
Vol 46 (1) ◽  
pp. 351-358 ◽  
Author(s):  
V. Prabu ◽  
S. Jayanti
Keyword(s):  
Power Generation ◽  
Coal Gasification ◽  
Laboratory Scale ◽  
Underground Coal Gasification ◽  
Carbon Neutral

scholarly journals Effect of Injection Flow Rate on Product Gas Quality in Underground Coal Gasification (UCG) Based on Laboratory Scale Experiment: Development of Co-Axial UCG System

Energies ◽  
2017 ◽  
Vol 10 (2) ◽  
pp. 238 ◽  
Author(s):  
Akihiro Hamanaka ◽  
Fa-qiang Su ◽  
Ken-ichi Itakura ◽  
Kazuhiro Takahashi ◽  
Jun-ichi Kodama ◽  
...  
Keyword(s):  
Flow Rate ◽  
Coal Gasification ◽  
Laboratory Scale ◽  
Underground Coal Gasification ◽  
Injection Flow Rate ◽  
Injection Flow ◽  
Product Gas ◽  
Scale Experiment

The Exergy Underground Coal Gasification Technology as a Source of Superior Fuel for Power Generation

2006 ◽  
Author(s):  
Michael S. Blinderman
Keyword(s):  
Power Generation ◽  
Power Plants ◽  
Coal Gasification ◽  
Underground Coal Gasification ◽  
Fuel Gas ◽  
Gasification Process ◽  
Product Gas ◽  
Production Wells ◽  
Industrial Projects ◽  
Fossil Fuel Power Plants

Underground Coal Gasification (UCG) is a gasification process carried on in non-mined coal seams using injection and production wells drilled from the surface, converting coal in situ into a product gas usable for chemical processes and power generation. The UCG process developed, refined and practiced by Ergo Exergy Technologies is called the Exergy UCG Technology or εUCG® Technology. The εUCG technology is being applied in numerous power generation and chemical projects worldwide. These include power projects in South Africa (1,200 MWe), India (750 MWe), Pakistan, and Canada, as well as chemical projects in Australia and Canada. A number of εUCG based industrial projects are now at a feasibility stage in New Zealand, USA, and Europe. An example of εUCG application is the Chinchilla Project in Australia where the technology demonstrated continuous, consistent production of commercial quantities of quality fuel gas for over 30 months. The project is currently targeting a 24,000 barrel per day synthetic diesel plant based on εUCG syngas supply. The εUCG technology has demonstrated exceptional environmental performance. The εUCG methods and techniques of environmental management are an effective tool to ensure environmental protection during an industrial application. A εUCG-IGCC power plant will generate electricity at a much lower cost than existing or proposed fossil fuel power plants. CO2 emissions of the plant can be reduced to a level 55% less than those of a supercritical coal-fired plant and 25% less than the emissions of NG CC.

Comparison between two types of Indian coals for the feasibility of Underground Coal Gasification through laboratory scale experiments

Fuel ◽  
2013 ◽  
Vol 113 ◽  
pp. 837-843 ◽  
Author(s):  
Sminu Bhaskaran ◽  
Anuradda Ganesh ◽  
Sanjay Mahajani ◽  
Preeti Aghalayam ◽  
R.K. Sapru ◽  
...  
Keyword(s):  
Coal Gasification ◽  
Laboratory Scale ◽  
Underground Coal Gasification ◽  
Indian Coals

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.

scholarly journals Syngas Underground Coal Gasification (UCG) Testing of Fracture Type Subbituminous Coal in Laboratory Scale

2021 ◽  
Vol 1 (2) ◽  
pp. 79-89
Author(s):  
Joniken Lesmana ◽  
Abu Hasan ◽  
Aida Syarief
Keyword(s):  
Soviet Union ◽  
Coal Gasification ◽  
Field Trials ◽  
Gaseous Product ◽  
Laboratory Scale ◽  
Underground Coal Gasification ◽  
Combustion Gas ◽  
Suction Pump ◽  
The Soviet Union ◽  
Gas Products

Underground Coal Gasification is a method used to convert underground coal seams into a gaseous product commonly called synthetic gas through a flammable chemical process without going through a conventional mining process. The UCG concept was first developed in England which was then continued by the Soviet Union in field trials of UCG which was used as a power plant. In Indonesia, Tekmira has begun to research UCG, but there are very few publications on UCG. Therefore, it is necessary to conduct research on laboratory scale UCG for analysis of gas products to support the study of renewable energy. UCG testing begins with sample preparation followed by laboratory-scale coal gasification testing. There is a sample of coal used in the test, namely Subbituminous Coal from Tanjung Enim, South Sumatra. Initial combustion is carried out by flowing propane gas into the reactor tube using a burner. Furthermore, a mixture of oxygen gas and compressed air is used to keep the coals burning. After obtaining the gas from the combustion, then gas sampling is carried out using a suction pump which will be stored in a tedlar gas bag. Combustion gas products will be checked for syngas concentration using a Gas Chromatography tool to determine the concentration of CH4, CO2 and O2 gases. From the tests that have been carried out, the gas concentrations of O2 are 3.67%, CO2 41.51%, and CH4 6.93%. Coal in the confined test conditions has good conditions with indications of seeing the concentration of CH4, O2, and CO2 gas.

Sign in / Sign up

Export Citation Format

Share Document