Coal

Bayer in February brought online a pilot plant at Chempark Leverkusen, Germany, to recycle carbon dioxide (CO₂) scrubbed from the flue gas of a 1,000-MW RWE lignite-fired unit and convert it into a raw material and petroleum substitute for plastic manufacturing. The Bayer facility (Figure 4) essentially produces a chemical precursor into which CO₂ is incorporated and then processed into polyurethanes that are used for many everyday items.

Because refractory is out of sight inside the gas flow path of a steam generator and its auxiliaries, it’s also often out of mind. That is, until the refractory fails and causes a forced outage.

Biomass cofiring has the potential to cut emissions from coal-fueled generation without substantially increasing costs or infrastructure investments. Research shows that when implemented at relatively low biomass-to-coal ratios, energy consumption, solid waste generation, and emissions are all reduced. However, mixing biomass and coal does create some challenges that must be addressed.

Efficient boiler operation requires boiler auxiliary equipment to operate in harmony. In this third and last installment of our Power 101 series, we examine ways to decrease the auxiliary power requirements of boiler auxiliaries.

Part II of this three-part series moves up the typical utility organization to consider important fleet-level fossil plant operating metrics. This portion of the EUCG-sponsored benchmarking survey found that utilities favor fleet-level metrics that are similar to plant-level metrics but assign them different priority. Utilities generally agreed on what were important metrics in the eight categories examined, although none were favored by a majority of the surveyed utilities.

In an anti-climactic markup that featured little new debate and no amendments by opposing Democrats, the House Energy and Power Subcommittee approved Republican legislation to block Obama administration action on climate change by stripping the Environmental Protection Agency of its Clean Air Act authority to regulate carbon dioxide and other greenhouse gases.

In an unusual ultimatum, the Environmental Protection Agency said that it is proposing to take over visibility portions of the Oklahoma Clean Air Act implementation plan to require three coal-fired power plants in the state either to switch to natural gas or install sulfur dioxide scrubbers within three years.

Anticipated clean air regulations could force the retirement of as much as 19,000 MW of coal capacity in the Mid-Atlantic—or 11% of the region’s generation—unless power prices rise to levels that make operation of the plants profitable, according to the independent market monitor for PJM Interconnection.

How does your company prepare and share fossil plant performance data? What data are important, and how much effort is required to collect and report the data? What are the most important statistics for reporting key fossil plant operations? The latest EUCG benchmarking survey reveals the favored fossil performance metrics at several of the largest utilities in eight key categories.

In his January State of the Union speech, President Barack Obama called on Congress to pass legislation that would allow the U.S. to source 80% of its electricity from “clean energy” sources by 2035—including traditional renewable sources like wind and solar as well as nuclear and “clean coal.” That broadened definition of “clean energy” was designed to inspire bipartisan interest, as was widely reported. But, as was also widely pointed out, the speech followed a visit to Washington from Chinese government officials and a series of key agreements aimed at increasing “clean energy” cooperation between the two countries.