ACARP ACARP ACARP ACARP
Mine Site Greenhouse Mitigation

VAM Enrichment with a Two-stage Adsorption Process

Mine Site Greenhouse Mitigation » Mine Site Greenhouse Mitigation

Published: March 17Project Number: C19054

Get ReportAuthor: Jun-Seok Bae, Xin Xiang Yu and Shi Su | CSIRO

Treatment of ventilation air methane (VAM) with cost-effective technologies has been an on-going challenge due to its high volumetric flow rate with low and variable methane concentrations. As part of CSIRO's approaches to tackle the challenges, this project is about VAM enrichment with CSIRO's carbon composites to support gas utilisation technologies such as gas engines and lean burn turbines for power generation. The ACARP project C19054 demonstrated that 5 or 11 times VAM enrichment was achievable with a single-stage VAM adsorption process, depending on operational conditions. As of today, this is the best performance achieved in VAM enrichment technologies worldwide. With these successful outcomes, this project, as an extension of the ACARP project C19054, aimed to achieve further VAM enrichment up to more than 25 vol.% methane in the final product, employing a two-stage adsorption process. The aim (> 25 vol.% CH4) in this project was accomplished with identification of further improvement options.

 

The initial scope was to utilise the existing large-scale test unit that was used for ACARP C19054, modifying the unit to accommodate another column for the two-stage adsorption process. At the early stage of this project, with an intension for future mine site trials, a strong need was identified to construct a new test unit that complies with mine site standards and regulations, which was supported by industry monitors. Consequently, extra tasks and costs were devoted to this project, including HAZOP study, hazardous area classification, and design, construction and installation of a new test unit in accordance with Australian standards and mine site regulations.

 

After the HAZOP study and hazardous area classification, a new VAM enrichment unit with a two-stage adsorption process was designed in 3D with SolidWorks and constructed, consisting of two fixed columns filled with carbon fibre composites, a heating/cooling system, a gas monitoring system and a control system. As one of the issues identified from ACARP C9054 was a slow heating process for temperature swing, the second column was made out of copper and brass to enhance heat transfer with a suitable thermal fluid for both heating and cooling. The heating process for the first column was improved by about 3.8 times with the selected thermal fluid at given conditions. Also the composite temperatures in the second column were increased almost double times faster than those in the first column. Overall, about 7.1 times improvement was achieved with the thermal fluid in the second column, compared to the time with hot air in the first column. Two sets of gas monitoring systems with SIL 2 were designed and fabricated. Operational safety features were implemented in the control and monitoring system in case of power failure or emergency.

 

As methane is a safety hazard that may fall into an explosive atmosphere, in the course of VAM enrichment, special precautions and preventative measures were taken during the design and construction phases as well as for normal operation and emergency. Particularly, the functional specification document (FSD) of the VAM enrichment unit was prepared to clearly identify the operating parameters, including the start-up, operating and shutdown sequences as well as emergency procedures.

Underground

Health and safety, productivity and environment initiatives.

Recently Completed Projects

C20003RISKGATE

DO NOT CLICK GET REPORT- THE OUTCOME OF THIS PROJECT IS A WEB SIT...

C21011Development Of New Testing Procedure For The Assessment Of Resin Performance For Improved Encapsulated Roof Bolt Installation In Coal Mines

In underground coal mining, the resin bond between the rock bolt and...

C8005Impacts Of Mine Subsidence On The Strata & Hydrology Of River Valleys: Management Guidelines For Undermining Cliffs, Gorges & River Systems

THIS REPORT IS PROVIDED AS A SET, COMPRISING C8005, C9067 & C180...

Underground

Open Cut

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

Recently Completed Projects

C17034Dragline Machine House Dust Control

A study has been undertaken into the performance of dust filtration ...

C21043Integrated Forward And Reverse Osmosis System For Mine Water Reuse

Mines across Australia face enormous water challenges and desalinati...

C21037Managing Mine Water Under Extreme Climate Variability

This report describes the technologies for exploring management stra...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C21047Seal, Spray And Wash Water Filtration In Coal Preparation Plants

The objective of the study was to undertake a review of seal, spray ...

C21055Advanced Dynamic Control For Paste Thickeners - First Stage For Control Of Complete CHPP’S

Paste thickeners produce significantly higher solids underflow conce...

C23034Comparison Of Column And Mechanical Flotation Technologies

Fine coal beneficiation is virtually essential for coking coals unle...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Recently Completed Projects

C25043The Strength Of Interfaces In Metallurgical Coke And Its Influence On Coke Abrasion

This project applied tribological and scratch testing techniques to ...

C12004Coke Reactivity Test: Critical Parameters

A Draft International Standard ISO/DIS 18894 has been prepared title...

C12073Accurate Instrumental Determination Of Carbon In Coal

Traditionally, thermal coal has been traded with its value being pri...

Technical Market Support

Mine Site Greenhouse Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

C17058Gas Emission Expert Model For Abandoned Coal Mines

This project is a continuation of ACARP Projects C13007 and C14080 (...

C19054VAM Enrichment With A Two-Stage Adsorption Process

Treatment of ventilation air methane (VAM) with cost-effective technolog...

C24017Improving Methods For Quantifying Fugitive Emissions From Open Cut Coal Mining

Fugitive emissions from open cut coal mines are usually estimated fo...

Mine Site Greenhouse 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