China's Progress in VAM utilization & Emisison Reduction, Mr. Han Jiaye, Director of Energy and Safety Division Information Institute, Ministry of Emergency Management of China (China Coal Information Institute)
2024 Global Methane Forum Mobilizing Methane Action 18-21 March 2024, Geneva, Switzerland
China’s Progress in VAM Utilization & Emission Reduction Han Jiaye, Director of Energy and Safety Divison
Information Institute, Ministry of Emergency Management of China (China Coal Information Institute)
Contents
1. VAM utilization and emission reduction policy in China
2. VAM utilization technology in China
3. VAM demonstration projects in China
4. CCII’s effort on VAM emission reduction and utilization
218-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
1. VAM utilization and emission reduction policy in China
• Development and Utilization Plan for Coalbed Methane (Coal Mine Methane) during the 13th
Five-Year Plan: to promote the utilization of VAM, develop zero-emission demonstration
projects, and establish a low-carbon circular development model. – Encourage the safe utilization, cascaded utilization, and large-scale utilization of coal mine methane
by means of household use, CNG, LNG, concentration, power generation, oxidation of VAM, etc..
– Develop key equipment for intelligent rapid drilling in underground coal mines, distributed utilization of
low concentration gas, safe and efficient utilization of ultra-low concentration gas and VAM, and form
a a technical and equipment system for coal mine methane extraction and utilization.
318-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
1. VAM utilization and emission reduction policy in China
• The Ministry of Ecology and Environment(MEE), the National Development and Reform
Commission(NDRC), and the National Energy Administration(NEA) jointly issued the Notice on
Further Strengthening the Management of Environmental Impact Assessment for Coal Resource
Development, encouraging the exploration of comprehensive utilization for gas extracted from coal
mines with methane concentration ranging from 2% (inclusive) to 8%, as well as VAM.
• NDRC, NEA and other four departments jointly revised and issued the Special Management
Measures for Central Budget Investment in Coal Mine Safety Transformation, optimizing the focus of
funding and encouraging the increase in comprehensive utilization of coal mine methane.
418-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
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1. VAM utilization and emission reduction policy in China
• Organize the application and selection of demonstration projects for the efficient extraction and
utilization of coal mine gas and the exploration and development of coalbed methane, fully leveraging
the role of technical demonstration in leading and driving, and improving the multiple benefits of
resource, safety, and ecology of coalbed methane (coal mine methane) extraction and utilization. The
first group of demonstration projects all involves VAM utilization, including:
– Shaanxi Hancheng Wangfeng Coal Mine's cascade efficient utilization demonstration project has a utilization
rate of 20% for VAM.
– China Coal Group's Shanxi Daning Coal Mine has a high-efficiency utilization demonstration project for low
concentration gas, with a utilization rate of 10% for VAM.
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1. VAM utilization and emission reduction policy in China • Led by CCII, the Methodology for Voluntary Emission Reduction of Coal Mine Methane is
being developed to support the methane emission reduction in coal sector. The Methodology is going to be issued in 2024.
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
Kick-off Meeting for Methodology Preparation
Attending the workshops on voluntary emission reduction methodology for coal mine methane
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2. VAM utilization technology in China
VAM utilization technology
Thermal oxidation
Catalytic oxidation
Boiler or gas engine auxiliary fuel
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Thermal Flow Reversal Reactor
Catalytic Flow Reversal Reactor
Thermal oxidation: The high outlet flue gas temperature can be utilized for power generation and heating, mainly by mixing with coal mine methane.
Catalytic oxidation: The outlet flue gas temperature is low, which can be used for heating. It is mainly used for the destruction of VAM and has great market potential.
Heating medium
Heat exchanger
Heating medium Valve A
Valve BValve A
Valve B
Air+CH4◄ Air + CO2 + H2O
Open valve A.
Open Valve B
import
Inert medium
catalyst
Inert medium.
export
2. VAM utilization technology in China
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
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low wind I am sorry,
but I cannot
fulfill that request.
air
Thermal storage Oxidation unit
(RTO)
Heat exchanger
Gas mixing system
Heat exchanger
Steam turbine Generator Refrigeration
unit
Dryer
Waste heat boiler
Gas Pumping station
CH4 concentration
1.2% CH4 concentration
≤ 8%
Hot water, heating
Superheated steam.
Mine cooling
High temperature
flue gas
Wellbore insulation
Coal slurry drying
Thermal energy
Electric power
VAM and ultra-low low concentration coal mine methane utilization and emission reduction technology roadmap
2. VAM utilization technology in China
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
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3. VAM demonstration projects in China
• Demonstration project for 30MW VAM oxidation power generation at Gaohe Coal Mine, Lu'an Group
Annual utilization volume of VAM: 92 million m3, with power generation of 240 million kWh per year
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• "Zero Emissions" Demonstration Project in Dafosi Coal Mine
Annual utilization volume of gas : 1.129 billion m3
Dafosi gas "zero emission" system
unit smoke exhaust 500℃~550℃
hot water
electric power
electric pow
er
Superheated saturated
steam
gas addition
Gas drainage Gas generator set
Heat exchanger heat users
Power output Low voltage distribution
system
steam turbine VAM
oxidation device
VAM
3. VAM demonstration projects in China
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
• CMM efficient utilization project for a full range of methane concentration in Dingji Coal Mine. • Achieve comprehensive utilization of extracted gas by adopting low concentration gas
generation, and heating and power generation system adopting RTO technology
3. VAM demonstration projects in China
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
Power generator for low concentration CMM (around 20%)
Coal slurry drying set powered by catalytic oxidation system for coal mine
gas with methane concentration around 1% to 1.2%.
Heating and power generation system adopting RTO technology for ultra-low
concentration coal mine gas(1% to 1.2%).
131313
• The utilization rate of extracted gas from the coal mine reaches 100%, with an annual utilization of 30 million m3 of purified methane.
• It provides an annual heating supply of 233,600 GJ and generates 28 million kWh of electricity, equivalent to saving 42,000 tons of standard coal.
Ultra-low low concentration coal mine gas oxidation technology road map in Dingji Coal Mine.
3. VAM demonstration projects in China
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
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Focus on source control: conducting basic research and engineering practice on coal mine methane extraction and utilization through underground and surface integrated approaches.
Coalbed methane (gas) content testing mobile laboratory (independent research and
development)
gravimetric adsorption instrument
Fluid-structure interaction analysis and imaging system
Multi-layered stacked gas reservoir joint development simulator
4. CCII’s effort on VAM emission reduction and utilization
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
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Focus on end-use: relying on the National Natural Science Foundation project to address key and difficult issues in VAM utilization.
4. CCII’s effort on VAM emission reduction and utilization
Ventilation system
Underground mining Extraction system
pre-extraction
goaf extraction
processing
storage Transportati on
raw coal
open-pit mining
High concentration CH4
Low concentration CH4
Fugitive emissions of CH4
Extraction system
Geological and natural preservation
Fugitive emissions of CH4
Recovery
Recovery
CH4 emission
Post-mining activities
A ctive coal m
ine
Abandoned coal mine
Temperature (℃)
C onversion rate/%
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Catalytic oxidation for VAM
Catalyst synthesis control strategy and product development • Pd/ porous Al2O3 support • Cu-Mn/Al-Zr-La multi-component support
Catalytic reaction mechanism research
Catalyst engineering application research
4. CCII’s effort on VAM emission reduction and utilization Focus on end-use: relying on the National Natural Science Foundation project to address key and difficult issues in VAM utilization.
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Accurate measurement and monitoring: developing Distributed matrix-type flow field VAM monitoring device Gas cloud imaging infrared spectroscopy gas monitoring technology, achieving the systematic technology and process for the measurement, monitoring, and utilization of VAM.
CMM emission intelligent and precise monitoring system
Front-end presentation layer
Data collection layer
Data service layer
Network transport layer
Application system layer
terminal Large screen visualization
Web browser Mobile terminal
Coal mine information
Methane emissions statistics
Carbon emissions statistics
Emission assessment
Data storage Data governance Data computation Application model
Wireless Local Area Network Mobile network Wired network Dedicated network
Gas extraction monitoring VAM monitoring Surface CBM monitoring Surface Monitoring of Goaf
4. CCII’s effort on VAM emission reduction and utilization
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
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Surface leakage monitoring
Utilizing unique infrared spectroscopic imaging technology
Capture visible light image and infrared image of methane gas.
By capturing thermal radiation images of methane and performing inversion of
concentration, gas concentration spectrum analysis can be achieved.
The dedicated image sensor detects changes in light intensity to form images of leakage clouds
and changes in image intensity.
Gas cloud
IR video
monito ring and
early warnin
g system
G as cloud IR
im agingvi
si bl
e lig
ht im
ag in
g
visible light Infrared and visible light fusion.
Gas emissions
Gas leak
Gas emissions
4. CCII’s effort on VAM emission reduction and utilization Accurate measurement and monitoring: developing Distributed matrix-type flow field VAM monitoring device Gas cloud imaging infrared spectroscopy gas monitoring technology, achieving the systematic technology and process for the measurement, monitoring, and utilization of VAM.
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
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Distributed matrix-type flow field VAM precise monitoring system
Ø Methane measurement range: (0.00~10.0)%CH4; Ø Error in methane monitoring:
When the concentration of CH4 is between 0.00% and 1.00%, the uncertainty is ±0.06% CH4. When the CH4 concentration is (1.00%~10.0)%, the true value is within ±6%.
Ø Working mode: The probe operates in a passive mode and is connected via fiber. Ø Communication interface: The device is equipped with a methane emission measurement monitoring system or a third-party monitoring system platform.
Detection chamber 1 Photovoltaic conversion 1
Detection chamber 2 Photovoltaic conversion 2
Detection chamber 7
Calibration chamber
Photovoltaic conversion 7
Photovoltaic conversion 8
AD conversionDFB light source
Fiber O ptic Splitter
M ulti-channel analog sw
itching
4. CCII’s effort on VAM emission reduction and utilization Accurate measurement and monitoring: developing Distributed matrix-type flow field VAM monitoring device Gas cloud imaging infrared spectroscopy gas monitoring technology, achieving the systematic technology and process for the measurement, monitoring, and utilization of VAM.
18-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
2018-21 March 2024 | Geneva, Switzerland 2024 Global Methane Forum: Mobilizing Methane Action
- China’s Progress in VAM Utilization & Emission Reduction
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