Transcript Coal Mine Methane Emission Reduction Projects By Oleg Tailakov UNDP

Coal Mine Methane Emission
Reduction Projects
By Oleg Tailakov
UNDP
April 29th, 2008
1
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.
2
Generalized Evaluation of
Methane Emission within Coal
Mining in Russian Coal Sector
3
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.
4
Methane emission, million tons
Coal mining at mines, million tons
Coal Mining at Mines and Associated
Methane Emission in Russia
Forecast for
2008-2012,
7.1 mln. t of CH4
148.9 mln. t of CO2
equivalent
Year
5
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%
6
Review of Process Capabilities in
the Field of Mine Methane
Utilization
7
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.
8
Electricity Generation
●
VVN-150;
●
Concentration of СН4 60-80% in
the flow of 120 m3/min;
Electric substation
Gas-generator plant
●
7 gas generators x 1.021 MWe ;
●
Electricity to the industrial site
substation;
●
Dissipated heat.
Vacuum-pump station
Degassing borehole
Gas pipeline
Power transmission line
9
Weak Methane-Air Mixture
Processing
Connection of the low-concentration
methane-air mixture burner unit
Surface plan
To atmosphere
Pump Station
El. substation
Mine
ventilation
shaft
Ch4<1%
Workshop
Catalytic
power unit
Therm
al
energy
Gener
ators
Electricity to
consumer
Machine
workshop
To consumer
Grading facility
Bunker
Ventilation:
12 mln. m3/year of СН4
(5 mln. m3 – uk. #19;
3 mln. m3 – uk. #26;
4 mln. m3 – uk. #29)
Transfer
Tower
Boiler
House
Rock
bin
Existing heat pipeline
Heat pipeline under design
Catalytic
power unit
10
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
11
Methane Burning in Boiler Houses
to Generate Heat (2)
Modular Boiler House
Air Heater to Dissipate Heat
12
Mine Methane Utilization JI Project
Example
2009
Mine A
Mine B
Mine C
Mine D
Prep. Plant
Quantity of methane recovered by the
mine for utilization, t of CH4
Preparation plant
Gas-engine
station
Boiler house
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
13
Preparation of Project Design
Documentation
14
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”.
15
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.
16
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.
17
Example of Monitoring
(Baseline)
Degasification wells
#16162
#301
Mobile vacuum
pump station
СО2
C
To the
atmosphere
C
Coal
Heating
plant
Heat
- concentration meter
18
Example of Monitoring (JIP)
Degasification wells
#16162
#301
Mobile vacuum
pump station
СО2
To the
atmosphere
Q
C
Mobile vacuum
pump station
T C Q
Storage
T
Q
C
- temperature meter
- flow meter
- concentration meter
Coal
Modular
boiler
station
Heating
plant
СО2
Heat
19
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.
20
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.
21
Contact Information
WWW.UGLEMETAN.RU
Mr. Oleg Vladimirovich TAILAKOV
E-mail: [email protected]
Tel.: + 7 (3842) 281366
22