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Boilers/Burners

Fuels Used for Power Generation Expected to Rebound in 2010

COAL POWER magazine :: Operations & Maintenance >> 
The Energy Information Administraion has predicted that, as the economy gathers steam this year, rising demand for gasoline, crude oil, coal, and natural gas is expected to push up energy prices, aided by a projected boost in crude oil production....

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Conveyor Upgrades Increase Plant Availability, Reduce Airborne Dust

COAL POWER magazine :: Operations & Maintenance >> 
The loading and discharge of conveyor belts is the area where many, if not most, of the problems in solids conveying occur. Fortunately, a new technology provides chutes to accomplish conveyor loading and discharge without blockages while minimizing the dust generated: engineered-flow transfer chutes....

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A Game Plan for Improving Boiler Operations

COAL POWER magazine :: Operations & Maintenance >> 
Operating a boiler is not difficult, but operating a boiler safely and efficiently requires skill and proper training. Following boiler operation best practices will keep your equipment in like-new condition for years to come. This game plan includes a compendium of best practices, with web links to a number of additional key resources you should be famililar with....

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World’s Largest Circulating Fluidized Bed Boiler Begins Commercial Operation

COAL POWER magazine :: Operations & Maintenance >> 
When the Łagisza power plant began commercial operation in late June 2009, it marked the beginning of a new era in the evolution of circulating fluidized bed (CFB) technology. At the heart of this 460-MW plant is the world’s largest CFB boiler, which is also the world’s first once-through unit supercritical CFB boiler....

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Four Methods of Fly Ash Sampling

COAL POWER magazine :: Operations & Maintenance >> 
There are four approaches to measuring fly ash content and, therefore, the quality of fuel combustion in a boiler. Before choosing one, you should understand their relative levels of complexity and accuracy....

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Ceramics Win the War on Erosion

COAL POWER magazine :: Operations & Maintenance >> 
Erosion can significantly reduce the operational life of boiler components. Abrasion-resistant ceramic parts can be a sound alternative to expensive metallic parts when replacing boiler components....

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Condenser Tube Life-Cycle Economics

COAL POWER magazine :: Operations & Maintenance >> 
The decision to retube a heat exchanger or condenser begins with understanding why tubes are failing. Only when the “why” is understood can the economic replacement tube material be selected. We explore the most common tube material failure mechanisms and then illustrate how to perform a proper life-cycle analysis for that new set of condenser tubes your plant so desperately needs. In sum, there are many reasons to consider getting the copper out of your condenser....

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The Role of Fireside Corrosion on Boiler Tube Failures, Part II

COAL POWER magazine :: Operations & Maintenance >> 
One of the primary challenges of reliably burning coal is managing the corrosion experienced by the furnace heat transfer surfaces. Fireside corrosion remains a leading cause of failure in superheater and reheater tubes. In Part I, we examined three case studies of different failure modes experienced by tubes located throughout the furnace. In Part II, we conclude with two additional boiler tube failure case studies....

Read more: The Role of Fireside Corrosion on Boiler Tube Failures, Part II

Power 101: Flue Gas Heat Recovery in Power Plants, Part II

COAL POWER magazine :: Operations & Maintenance >> 
Every power engineer must have a firm grasp of the rudiments of how fuel is processed to produce electricity in a power generation facility. With this article, we continue our three-part series on the essentials of recovering heat from flue gas to dry and process coal, with the goal of improving overall plant operating efficiency....

Read more: Power 101: Flue Gas Heat Recovery in Power Plants, Part II

Improve Furnace Reducing Atmosphere Using Fuel/Air Ratio Control

COAL POWER magazine :: Operations & Maintenance >> 
Progress Energy has incorporated online combustion optimization/tuning to eliminate furnace reducing atmospheres at its Asheville Plant. The optimization project utilized individual burner airflow measurement and continuous burner coal flow measurement to adjust burner air/fuel ratios. The result: significantly improved boiler combustion....

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Wind Integration: Does It Reduce Pollution and Greenhouse Gas Emissions?

COAL POWER magazine :: Operations & Maintenance >> 
Many claim that wind generation is beneficial because it reduces pollution emissions and does not emit carbon dioxide. This isn’t necessarily the case. When wind is introduced into a generation system that uses carbon technologies to back up the wind, it actually reduces the energy efficiency of the carbon technologies....

Read more: Wind Integration: Does It Reduce Pollution and Greenhouse Gas Emissions?