Archive: Coal

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The Coal Patrol: Coal to Synfuels: Deal or No Deal?

Synfuels’ political bubble has burst in Washington, but the market may step in where Congress fears to tread. When coal industry interests, in the form of the CTL Coalition, got a bill with strong federal support for coal-to-liquids technology before the Senate this spring, it appeared that the political skids were greased for some kind […]

Coal Plant O&M: Smart Sootblower Tailors Cleaning to Need for It / Blending’s Impact on Coal Quality

The 1990 amendments to the Clean Air Act require coal-fired power plants to reduce their emissions of the pollutant SO2. To do so, many have switched to, or are considering switching to, Powder River Basin (PRB) coal. Unfortunately, PRB coal has a tendency to leave excessive and tenacious deposits on boiler heat-exchange surfaces. Complicating the problem, the distribution of the deposits is far from uniform.

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Climate change concerns drive projects to curb CO2

In a carbon-constrained world, CO2 capture and storage (CCS), although considered the most radical of the carbon abatement technologies (CATs), seems to be favored over combustion and steam cycle improvements alone. However, CCS is the least commercially developed of the CAT options; at present, there are only field prototypes for its various forms. Nonetheless, most […]

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PRB Coal Users’ Group grapples with supply chain challenges

Consumption of Powder River Basin coal continues to grow, from 28 million tons annually in the mid-1970s to what is now 400 million tons per year. Existing plants as far east as Nova Scotia burn the low-sulfur coal to comply with increasingly stringent limits on SO2 emissions, and PRB coal has become the fuel of […]

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Global warming, rising costs complicate capacity additions

If little else is clear about the future of the U.S. power industry, this much is: Electricity rates are going up across the country, and will continue to. None of the esteemed panelists at the CEO session of the ELECTRIC POWER 2007 Conference & Exhibition in Chicago last month actually said those words. But much […]

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Kimberlina: A zero-emissions demonstration plant

FutureGen may be getting the headlines, but it’s not the only superclean demonstration plant in town. In fact, you could argue that other technologies are further down the evolutionary timeline. Case in point: Clean Energy Systems’ adaptation of rocket engine technology to radically change the way fuel is burned. The result is a true zero-emissions power plant.

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Global Monitor (June 2007)

Siemens, E.ON to test world’s largest GTG / Midwest to add 76-MW peaker in Kansas / Tapping the sun near Phoenix / Georgia Tech developing 3-D PV nanocells / Wind farms with hydrogen backup? / BNSF , union come to terms / IPL to buy 200-MW wind project / India to improve environmental monitoring / POWER digest

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Global Monitor (May 2007)

World’s largest PV plant now in Portugal; latan 2 construction may resume; Allegheny to scrub Fort Martin plant; TVA will clean up big Dutch CC plant; Connecticut blesses six fuel cell projects; DOE approves IGCC plant in Florida; FERC relicenses Osage hydro plant; A nanotech perpetual motion machine?; POWER digest

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Pollution Control: Low-NOx Combustion Retrofit Options

Reducing NOx emissions from large utility coal-fired boilers has been a primary focus of the U.S. power generation industry since passage of the 1970 Clean Air Act and subsequent legislation. By the early 1990s, nearly all such boilers had installed some form of low-NOx burner (LNB) technology and/or overfire air (OFA) — the least expensive […]

PRB Tech Notes: Pay Me Now or Pay Me Later

Money is always spent with the best intentions. We look for the best deal, often identifying it by the lowest price. Sometimes, our choice works out and we save money and get a great product. When it doesn’t work out, however, we find ourselves spending more and more money to repair or replace our "great […]