GE Introduces Digital Technology to Enhance Efficiency and Reduce Emissions of Coal-Fired Plants

At its Minds + Machines event in Paris, GE Power recently unveiled the Digital Power Plant for Steam, a suite of technologies that can dramatically reduce greenhouse gas emissions by improving the performance and efficiency of coal-fired steam power plants. Improving the efficiency of coal-fired plants is one of the toughest challenges in the electricity industry today. Plant technology is typically more mature, systems are highly complex and average efficiency rates are low.

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A Soaring Future

Alpha’s Hawks Nest mine exemplifies multiuse reclamation success

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Dry Quenching: Clean Technology in Coke Production

By Dr. Fathi Habashi

If organic chemistry is the chemistry of carbon, then ferrous metallurgy is the technology of carbon. Carbon in the form of coal is used in metallurgy as a fuel, but the major use is to make coke that is an essential component of the feed to iron blast furnaces. For each ton of iron produced, half a ton of coke is used. It is estimated that 50 million metric tons (mt) of coke are produced annually worldwide.

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Locking Away Coal Combustion Wastewater Problem with Paste Technology

By Sue Longo

Many power producers are looking for ways to meet the U.S. Environmental Protection Agency (EPA) federal regulations for Coal Combustion Residuals (CCRs) and Effluent Limitations Guidelines (ELGs). One of the thorniest problems involves handling the water produced by many ash-management processes — particularly the wastewater from the flue gas desulfurization (FGD) process.

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An Innovation Solution to Aging Infrastructure: The Tunnel Ridge Clean Coal Conveyor Upgrade

The U.S. coal industry frequently relies on infrastructure that was constructed 30 or 40 years ago. Conveyors supported in steel tubes or trusses exposed to the corrosive effect of coal, water and the environment are used to transport the coal to market. As these conveyors and structures age, it is vital that they be inspected and maintained to ensure they can continue to function safely. This can be particularly challenging to accomplish while not impacting the operation of the mine. The inspection and structural upgrade of the clean coal conveyor at Alliance Resource Partners’ Tunnel Ridge mine provides an example of how this can be efficiently and cost effectively achieved with minimal impact to production.

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