ACARP ACARP ACARP ACARP
Mine Site Greenhouse Gas Mitigation

Technological Assessment of a Recycle Reactor for VAM Abatement

Mine Site Greenhouse Gas Mitigation » Mine Site Greenhouse Gas Mitigation

Published: July 19Project Number: C27058

Get ReportAuthor: Michael Stockenhuber, Eric Kennedy, Matthew Drewery, Hadi Hosseiniamoli, Timothy Oliver, Kerryn Procter, Michael Gilbert | University of Newcastle, Howden Australia

Underground coal mining emits high volumes of methane, diluted in ventilation air to between 0.4 and 1%. As this is below the lower flammability limit of methane, alternative mitigation techniques need to be examined. This project examined the potential of catalytic combustion, where methane is converted to carbon dioxide over palladium-based catalysts at temperatures below 500oC. A VAM mitigation unit was developed consisting of an in-operando catalyst regeneration system. This system has been examined with alumina supported palladium catalysts, with the deactivation mechanisms investigated via spectroscopic techniques to identify potential reactivation conditions. It has been suggested that the presence of water vapour in the feed stream decreases catalytic activity, particularly at lower temperatures, due to the formation of inactive hydroxyl groups on the catalyst surface, blocking access to the PdO sites for methane dissociation. The role of the support is also shown to be important, with results indicating supports influence low palladium dispersion and TPD suggesting that increased oxygen mobility would decrease the rate of catalyst deactivation caused by the presence of water. It was found that high methane conversion could be achieved over Pd/Al2O3 at 480oC for extended time on stream, with deactivation able to be reversed by exposure to dry air, oxidising carbon deposits. Significant quantities of carbon deposits were observed, and it was estimated that approximately 94kg of carbon are deposited (in a typical 700 m3s-1 VAM stream) over a 450 hour time period. This can be regenerated over a time period of 10 minutes. The ability for a system to reactivate catalysts in operando allows for the potential of a continuous VAM mitigation system, which we have demonstrated experimentally.

A heat recovery system was modelled and a recovery system was designed to enable the VAM mitigation system to operate with minimal additional fuel, with process viability with respect to energy consumption and costings simulated with Aspen Plus software.

Underground

Health and safety, productivity and environment initiatives.

Recently Completed Projects

C28026Measuring The Height Of Fracturing Above Extracted Longwall Panels To Improve Reliability Of Groundwater Impact Predictions

Longwall mining is a mining method widely used in the Australian und...

C25059Development Of An Intrinsically Safe, Integrated Wireless Communications Network With A Distributed Array Of Geotechnical Sensors

For over 20 years, SCT Operations (SCT) have provided a range of ind...

C26051An On-Machine Bolting And Geotechnical Monitoring System

The primary objective of this project was to investigate how laser s...

Underground

Open Cut

Safety, productivity and the right to operate are priorities for open cut mine research.

Recently Completed Projects

C27046Estimation Of True Deformation Vector From Slope Radar Monitoring

Slope deformation radar monitors are now widely used in open cut coa...

C29003Wear Debris Removal From Dragline Commutators

The original aim of this project was to establish a method of removi...

C28037Local Scale Dispersion Modelling To Support ACARP Emission Factors

There remains significant concern in the industry regarding the accu...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C27032Coal Grain Analysis Applications Handbook

This Handbook sets out recommended practices for using coal grain an...

C26012Improved Flotation Recovery Via Controlling Froth Behaviour

There is no real-time measurement for coal flotation performance, ma...

C27012Towards Better Fine Coal Classification

It is well recognised that the efficient classification of fine coal...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Recently Completed Projects

C26039Nanoporosity In Cokes: Their Origin, Control And Influence On CO2 Reactivity

This project using the outcomes of previous project C24060, examine...

C28063A Comprehensive Technical Review Of High-Efficiency Low-Emission (HELE) Pulverised Coal Combustion Technologies For Power Generation

Research and development has been undertaken worldwide to realise co...

C28064Carbon Structure Transformation During Coking Of Australian Coking Coals: Better Understanding The Coke Formation

Carbon structures of coke that are formed during the plastic layer a...

Technical Market Support

Mine Site Greenhouse Gas Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

C26004CFD Modelling Of Reverse Thermal Oxidisers For VAM Abatement - CFD Modelling Of Fixed-Bed RTO Devices

The project is part of a larger multi‐phase program of study a...

C27058Technological Assessment Of A Recycle Reactor For VAM Abatement

Underground coal mining emits high volumes of methane, diluted in ve...

C27008Selective Absorption Of Methane By Ionic Liquids

The connection of a ventilation air methane (VAM) abatement plant di...

Mine Site Greenhouse Gas Mitigation

Low Emission Coal Use

Step-change technologies aimed at reducing greenhouse gas emissions.

Recently Completed Projects

C17060BGasification Of Australian Coals

Four Australian coals were trialled in the Siemens 5 MWth pilot scale ga...

C17060AOxyfuel Technology For Carbon Capture And Storage Critical Clean Coal Technology - Interim Support

The status of oxy-fuel technology for first-generation plant is indicate...

C18007Review Of Underground Coal Gasification

This report consists of a broad review of underground coal gasification,...

Low Emission Coal Use

Mining And The Community

The relationship between mines and the local community.

Recently Completed Projects

C16027Assessing Housing And Labour Market Impacts Of Mining Developments In Bowen Basin Communities

The focus of this ACARP-funded project has been to identify a number...

C22029Understanding And Managing Cumulative Impacts Of Coal Mining And Other Land Uses In Regions With Diversified Economies

The coal industry operates in the context of competing land-uses that sh...

C23016Approval And Planning Assessment Of Black Coal Mines In NSW And Qld: A Review Of Economic Assessment Techniques

This reports on issues surrounding economic assessment and analysis ...

Mining And The Community

NERDDC

National Energy Research,Development & Demonstration Council (NERDDC) reports - pre 1992.

Recently Completed Projects

1609-C1609Self Heating of Spoil Piles from Open Cut Coal Mines

Self Heating of Spoil Piles from Open Cut Coal Mines

1301-C1301Stress Control Methods for Optimised Development...

Stress Control Methods for Optimised Development and Extraction Operations

0033-C1356Commissioned Report: Australian Thermal Coals...

Commissioned Report: Australian Thermal Coals - An Industry Handbook

NERDDC