ACARP ACARP ACARP ACARP
Mine Site Greenhouse Gas Mitigation

Adsorption-based Enrichment and Stabilization of Methane in Mine Ventilation Air (MVA)

Mine Site Greenhouse Gas Mitigation » Mine Site Greenhouse Gas Mitigation

Published: April 09Project Number: C18009

Get ReportAuthor: Paul Webley | Monash University

This report briefly examines the application of adsorption technology to the enrichment of methane in mine ventilation air (MVA). The aim of the study was to determine if adsorption technology is capable of providing enrichment of methane to the required level (assumed to be 1%v/v) to feed a VOCSIDIZER unit and if so, what the energy and CO2 emissions penalty was. Both pressure and temperature regeneration modes were to be studied and an initial assessment of infrastructure and engineering issues to be made. In addition, the role of adsorbent development was assessed and recommendations were made for future work in this area.

 

The study demonstrated that vacuum swing adsorption (VSA) and temperature swing adsorption (TSA) are both capable of enriching methane from low levels (down to 0.01%v/v) up to 1% v/v. In the case of VSA, provision of vacuum levels down to 0.1 kPa may be necessary to provide the enrichment using an activated carbon adsorbent. In the case of TSA, a hot purge gas stream at 180°C is needed to remove the adsorbed impurity - in this case carbon adsorbents are not appropriate due to safety concerns.

 

In both regeneration modes (TSA and VSA), the energy consumed by the separation process impacted negatively on the overall energy output of the VOCSIDIZER process and the CO2 emissions reduction attainable. In the case of vacuum swing adsorption, for inlet CH4 concentrations of less than 0.1% v/v, no net CO2 reduction is achieved (assuming no power is generated by the VOCSIDIZER). In the case of temperature swing adsorption, no net CO2 reduction is achieved for inlet CH4 concentrations of less than approximately 0.03% v/v. In both cases, the power consumed for adsorbent regeneration was significantly more (~ 80 times) than the minimum energy needed from a second law analysis. This suggests there is considerable scope for improved systems/process development.

 

The physical equipment items needed for application of VSA technology are well beyond that currently commercially available and suggest that TSA is more appropriate. To avoid the long cycle times and large bed sizes usually associated with TSA, it is recommended that honeycomb rotary adsorbers be investigated for their potential application to MVA methane enrichment.

Underground

Health and safety, productivity and environment initiatives.

Recently Completed Projects

C26047Real Time Dust Monitor

The aim of this project was to develop a real time respirable dust m...

C29034Integrated Roadway Development: A Strategic Industry Review

This report describes the outcomes of a strategic review of Australi...

C26062New Outburst Risk Determination Measures Along With Data Gathering And Analysis For Coal Burst Assessment

Bursts are events that expel material at velocity at the time of eje...

Underground

Open Cut

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

Recently Completed Projects

C27009Tailings Revegetation Project Through “The Vegetative Water Pump”

This project aimed to greatly reduce the water trapped below the cru...

C29043Design, Construction And Commissioning Of Tyre Handler Test Apparatus

C29030Mapping Of Elemental Coal Content For Exploration And Mining

This project has analysed the concentrations of 50 elements not typi...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C26010Multi-Sloped Screening Efficiency With Changing Strokes, Frequencies, Feed Solids And Feed Rates-Pilot Plant Study

Optimising multi-sloped screens is often described as an art and the...

C28059Impact Of Water Quality In Coal Handling And Preparations Plants

The objective of this project was to deliver a concise reference do...

C27026Ultra-Low Ash Coal By 3D Binder Flotation

The objective of this project was to investigate the potential to pr...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Recently Completed Projects

C28067Characterisation Of Complex Coal Blends, And Methodology To Investigate Thermal Coals Based On Compositional Analysis

This project built on the outcomes from project C25049 (Fusibility ...

C28066Influence Of Coal Blending On Coke Nanoporosity And CO2 Reactivity

Reactivity of coke is one of the most important parameters that defi...

C29077The Effects Of Ash Minerals On Coke Reactivity At High Temperatures

An investigation into how coke mineralogy affects coke reactivity ha...

Technical Market Support

Mine Site Greenhouse Gas Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

C23052Novel Stone Dust Looping Process For Ventilation Air Methane Abatement

This multi‐phase project is concerned with the mitigation of m...

C27054Optimisation Of A Thermal Flow Reversal Reactor For Ventilation Air Methane Mitigation

Ventilation air methane (VAM) generally accounts for 50-85% of the t...

C28076Selective Absorption Of Methane By Ionic Liquids (SAMIL) - Phase 2 Demonstration In A Packed Bed Reactor

An alternative approach to high temperature oxidation of ventilation...

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