1 coal mine methane emission reduc tion projects by oleg tailakov undp april 29 th, 2008
TRANSCRIPT
1
Coal Mine Methane Emission Reduction Projects
By Oleg TailakovUNDP
April 29th, 2008
2
Presentation Content
• Generalized evaluation of methane emission within coal mining in Russian coal sector.
• Review of process capabilities in the field of mine methane utilization.
• Preparation of project design documentation.
3
Generalized Evaluation of Methane Emission within Coal Mining in Russian Coal Sector
44
General Evaluation Methodology• The methodology recommended in 2006 by the
Intergovernmental Climate Change Expert Group was used for evaluation of methane emission from coal seams.
• Sources:– Coal mining at mines (the volume of recovered and
utilized methane is taken into account). – Coal mining at open pits;– Downstream activities.
5
Coal Mining at Mines and Associated Methane Emission in Russia
Year
Co
al m
inin
g a
t m
ines
, m
illi
on
to
ns
Met
ha
ne
emis
sio
n,
mil
lio
n t
on
s
Forecast for
2008-2012,
7.1 mln. t of CH4
148.9 mln. t of CO2 equivalent
6
Possible Mine Methane Emission Reduction in Russia in 2008-2012
• Total methane emission - 148.9 mln. t of СО2equivalent.
• Coal mine degassing systems (degassing efficiency of 15-30%) - 22-45 mln. t of СО2 equivalent.
19%
65%
7
Review of Process Capabilities in the Field of Mine Methane
Utilization
88
Mine Methane Utilization Technology
• Electricity generation.• Weak methane-air mixture processing. • Methane burning in boilers to generate heat. • Methane flaring.• Operation of vacuum pumps utilizing methane. • Use of compressed methane as automotive fuel.
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Electricity Generation● VVN-150;
● Concentration of СН4 60-80% in
the flow of 120 m3/min;
● 7 gas generators x 1.021 MWe ;
● Electricity to the industrial site
substation;
● Dissipated heat.
Electric substation
Gas-generator plant
Degassing borehole
Gas pipeline
Power transmission line
Vacuum-pump station
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Weak Methane-Air Mixture Processing
Ventilation:12 mln. m3/year of СН4 (5 mln. m3 – uk. #19; 3 mln. m3 – uk. #26; 4 mln. m3 – uk. #29)
Connection of the low-concentration methane-air mixture burner unit
Surface plan
Existing heat pipeline
Heat pipeline under design
Mine ventilation
shaft Ch4<1%
Catalytic power unit
Thermal
energy
To atmosphere
To consumer
Generators
Electricity to consumer
Boiler House
Bunker
El. substation
Grading facility
Transfer Tower
Machine workshop
Workshop
Rock
bin
Incl
. sha
ft
Incl
ine
d sh
aft #
2
Catalytic power unit
Pump Station
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Methane Burning in Boiler Houses to Generate Heat (1)
Degassing borehole
Gas pipeline
Power transmission line
1 – Vacuum-pump station
2 – Control unit
3 – Modular boiler house
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Methane Burning in Boiler Houses to Generate Heat (2)
Air Heater to Dissipate Heat
Modular Boiler House
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Mine Methane Utilization JI Project Example
2009
Mine A Mine B Mine C Mine D
Prep. Plant
Preparation plant
Gas-engine station
Boiler house
Quantity of methane recovered by the mine for utilization, t of CH4
Quantity of methane fed for utilization, t of CH4
Quantity of methane utilized at the facility, t of CH4
Quantity of flared methane, t of CH4
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Preparation of Project Design Documentation
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Choice Determining Factors and Accepted Baseline Evaluation
Methodology• Factors
– Coal seam and alternation gas content.– Mine development plant.– Commissioning of high-performance equipment.– Coal seam degassing alternatives.
• Methodology– Approved consolidated baseline methodology ACM0008
“Consolidated baseline methodology for coal bed methane and coal mine methane capture and use for power (electrical or motive) and heat and/or destruction by flaring”.
1616
GHG Sources• CH4
– Surface degassing boreholes.– Underground degassing boreholes.– Worked-out area boreholes drilled into the rock cavities.– Systems to extract methane from isolated worked-out
areas.– Ventilation systems.
• CO2– Methane flaring.– Electricity generation for capture and utilization of
methane.
1717
Additionality and Monitoring• Additionality criterion
– Investment and process attractiveness of the baseline is higher than of the mine methane emission reduction project not registered as a JI project.
• Measurements– Volume of captured mine methane using
continuous flow meters, temperature, pressure and CH4 concentration measurements.
– Methane concentration is measured by a continuous analyzer or methane flow meters.
– Afterburning efficiency monitoring.
1818
Example of Monitoring (Baseline)
Degasification wells
#301 #16162
Mobile vacuumpump station
To theatmosphere
HeatC
СО2
C - concentration meter
Heating plant
Coal
1919
Example of Monitoring (JIP)Degasification wells
#301 #16162
Mobile vacuumpump station
Modularboilerstation
To theatmosphere
Heat
CQ
QC
СО2
Storage
T
T
C
Q
- - -
temperature meter
flow meter
concentration meter
Heating plant
СО2
Coal
Mobile vacuumpump station
2020
Problems with Mine Methane Utilization Project Preparation and
Implementation• Problems with mine methane ownership are
possible.• Low gas and electricity prices.• Insignificant number of mines using degassing,
decentralized methane capturing.• Lack of high-performance drilling equipment to drill
boreholes from surface and mine workings.• Need to agree connection of consumers (in case of
electricity generation) with power generation companies, possible competition with other electricity producers.
2121
Recommendations to Investors and Developers in Respect of Dealing with
Mine Methane Projects
• Options envisaging equipment sharing, engagement of experienced mine methane project operators.
• Review the possibility to use methane utilization products by external consumers.
2222
Contact Information
WWW.UGLEMETAN.RUMr. Oleg Vladimirovich TAILAKOV
E-mail: [email protected].: + 7 (3842) 281366