Technical Market Support

Coal Impact Assessment For Advanced Power Generation Technologies

Technical Market Support » Future Technologies

Published: March 98Project Number: C3095

Get ReportAuthor: Rod Boyd, R Benyon, Q Nguyen, H Tran, Allen Lowe | Pacific Power

Environmental pressure on coal based power generation has lead to the development of a number of new technologies which offer superior environmental performance over conventional pulverised coal fired power generation. Of these technologies Integrated Gasification Combined Cycle (IGCC) is expected to represent a significant proportion of new coal fired capacity to be installed over the next decade. As IGCC technology is still in its infancy there is little public data on the performance of coals in these plants. The objective of the project is to develop within Australia expertise in IGCC technology and the capability to test and independently assess coals and their interaction with three generic IGCC processes from technical and economic viewpoints.

The project conducted a technical and economic assessment of six selected export coals in three Integrated Gasification Combined Cycle processes. The assessment was conducted through a combination of laboratory testing and computer simulation covering three major project areas:

  1. Assessment of high pressure coal gasification reactivity.
  2. Integrated Gasification Combined Cycle process simulation.
  3. Evaluation of relative coal utilisation costs using a Coal Value Model approach.

The IGCC processes considered are the most advanced gasifier designs for high rank coals: oxygen blown dry feed (Shell), oxygen blown slurry feed (Texaco) and air blown dry feed (Mitsubishi Heavy Industries).

A methodology and assessment tools were developed to enable the independent assessment of the performance of coals in IGCC processes.

The laboratory testing of the coals under gasification conditions demonstrated that the production of coal chars and subsequent measurement of char reactivity under high pressure conditions requires considerable expertise, close attention to experimental technique and specialised equipment. Char reactivities as determined for the six coals varied by up to 500%. The Integrated Gasification Combined Cycle process simulation work yielded mass flows and process efficiencies for the six coals in the three IGCC processes. The overall cycle efficiencies ranged from 41.1% to 42.8% for the Shell process, 39.2% to 40.4% for the Texaco process and 42.2% to 43.8% for the MHI process. The relative utilisation costs of the six coals was found to vary by up to $5 per tonne of coal.

Coal properties were found to influence a number of facets of IGCC plant performance and to potentially have a significant impact on the overall coal utilisation cost. These facets include the overall cycle efficiency, oxygen usage and flux requirements. Assessment of coal impact on plant performance requires a holistic approach which allows these impacts to all be considered.

Desirable coal properties for Integrated Gasification Combined Cycle plants include:

  • low moisture
  • low ash content
  • high rank
  • low ash fusion temperatures
  • high char reactivity
  • low sulphur
  • high HGI

The coals considered had predicted utilisation costs which differed by up to $5 / tonne coal.

The relative utilisation costs of the six coals varied between the three processes. Knowledge of the IGCC process is therefore necessary for accurate impact assessment.



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...


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


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