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· “Air Preheaters and Heat Exchangers for Power Plants” is “Hot Topic” on May 5, 2011
· Utility E Alert Headlines for April 22, 2011
· Conference Activities This Week and Next
· Brighter Days Ahead for Ethanol?
“Air Preheaters and Heat Exchangers for Power Plants” is “Hot Topic” on May 5, 2011
Air preheaters and heat exchangers including condensers, feedwater heaters, economizers and others play an important role in maintaining the efficiency and reliability of coal burning power plants and are increasingly being used to help control pollution. According to experts in the field, the air heater on a fossil fuel-fired power plant is responsible for at least 10 percent of the overall thermal efficiency of the plant. A poorly operating air heater, however, will result not only in a direct reduction in air heater thermal efficiency but will also have detrimental downstream effects that can result in an additional loss in efficiency of 5 to 10 percent.
Heat exchangers are increasing being used in new locations in power plants both to extract more energy from the combustion process and to improve the performance and efficiency of pollution control equipment. For example, placing a second heat exchanger prior to the precipitator to control the temperature of the flue gas can improve fine particulate and SO3 removal as much as using a wet precipitator after the scrubber. Heat exchangers are also employed to allow an SCR to operate after the particulate control systems to avoid the problems associated with passing heavily particulate laden gases through an SCR. A gas-to-gas (GGH) heat exchanger is used to reheat flue gas to 550-650°F before a tail-end SCR, then a second heat exchanger recovers some of the heat energy by cooling the gas back to about 250-350°F. And a condensing heat exchanger can be used to condense air toxics out of a flue gas stream.
The following speakers will discuss applications for air heaters and heat exchangers, issues that should be considered when designing, specifying, acquiring and installing heaters and exchangers, how to determine where and how heat exchangers can be used to best improve efficiency, maintenance and reliability issues such as minimizing flyash fouling and new technology under development or in testing.
John Guffre P.E., Research Scientist at Paragon Air Heater Technologies, Inc, will focus on the direct thermal losses in the air heater and fan systems resulting from air heater leakage. The causes of this leakage will be discussed as well as methods for eliminating these losses. Some heater related combustion problems will also be outlined, as well as the air heater’s effect on downstream air pollution control equipment.
Philip Vincent, P.E., Senior Application Engineer at Thermal Engineering International (TEI), will discuss heat exchanger efficiency. A thermal power plant converts the thermal energy of combustion to mechanical energy. This is a survey of the intermediate equipment that performs the conversion, heat exchangers. An example of how the efficiency of the plant can be affected by a single exchanger will be discussed.
To register for the "Hot Topic Hour" on Thursday, May 5, 2011 at 10 a.m. CDT (Chicago time), click on: http://www.mcilvainecompany.com/brochures/hot_topic_hour_registration.htm.
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Here are the Headlines for the April 22, 2011 – Utility E Alert
UTILITY E-ALERT
#1021– April 22, 2011
Table of Contents
COAL – US
COAL WORLD
GAS / OIL – WORLD
BIOMASS
CO2
NUCLEAR
BUSINESS
HOT TOPIC HOUR
For more information on the Utility Environmental Upgrade Tracking System, click on: http://www.mcilvainecompany.com/brochures/energy.html#42ei.
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Conference Activities This Week and Next
Here are the scheduled conferences for the coming weeks. Just click on any box to see details.
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5/10/2011 |
Electric Power 2011 |
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5/9/2011 |
2011 World of Coal Ash Conference |
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5/6/2011 |
Pumps, Valves & Compressors Expo 2011 |
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5/5/2011 |
Aerosol Technology for Cleanrooms |
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5/5/2011 |
IFAT CHINA + EPTEE + CWS 2011 |
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5/2/2011 |
AISTech 2011 |
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5/2/2011 |
Coal Prep 2011 |
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5/2/2011 |
ESTECH 2011 |
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5/2/2011 |
Offshore Technology Conference 2011 |
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4/27/2011 |
15th Int'l Conference for SO2, NOx, HG, PM2.5 |
The 15Th Conference in Beijing this week included a speech by Gangjian Li of Mcilvaine. It also linked to presentations in Chinese by W.L. Gore and Wahlco. Here are some of those links:
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Event Date: |
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Event Name: |
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The Offshore Technology show next week will be a big one. A number of utility suppliers will be on hand including Areclor Mittal (Industeel), Richard C. Garvin | Industeel North American Sales Director ArcelorMittal richard.garvin@arcelormittal.com T+1 (610) 383-3002 | F +1 (610) 383-3007 | M +1 (610) 517-1830 will be accompanied by Jean-Christophe Milek(Offshore Sales Mgr - Jack-up components) and John Clatworthy.
iNDUSTEEL as part of ArcelorMittal specializes in pressure vessel steels and pre-hardened thick blocks with improved properties for the oil and gas industry .Steel grades include F22, F11, CrMO(V), CMn HIC among others. End users include BP, Shell, Total, Exxon Mobil, and Chevron Mecasteel, developed by Industeel, is a concept of patented pre-hardened grades with improved properties compared to standard AISI 4130 / 4140
_ High homogeneity through the thickness up to 37.4’’
_ High soundness quality
_ Good machinability
_ Good weldability
_ Delivered with tests certificates
A detailed presentation on Mecasteel for the oil and gas industry is posted in the McIlvaine Global Orchard. Presentation: Industeel Mecasteel, Pressure vessel and thick parts for the oil and gas industry.
The Electric Power Show, Coal Prep and the World of Ash are also slated in the next few weeks. We will be adding to the show information for these and other conferences on a continuing basis. So keep checking this calendar of events and all the other free information at:
Free News and InterWEBviews http://www.mcilvainecompany.com/Decision_Tree/subscriber/Tree/Default.htm
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Brighter Days Ahead for Ethanol?
An upturn in activity in the ethanol industry is being reported in McIlvaine’s Biofuel Update. A year ago plant closings and bankruptcies were in the news. Recently more encouraging news has been featured in the Update. Increasing gasoline prices and turmoil overseas have created a brighter long term outlook for ethanol. Short term demand for ethanol is down, tied to a nationwide decline in gasoline use because of high prices at the pump.
Even though future energy policy is uncertain closed plants are being purchased and restarted.
Aventine emerged from bankruptcy in March 2010, named a new management team, and restarted construction to complete the Mount Vernon Ethanol Plant. The Plant was completed November 2010, with first grind date being December 1, 2010. It has been gradually increasing production and will have an annual capacity of 110 million gallons.
In June 2010 the Pacific Ethanol Plants emerged from bankruptcy and the ownership of the Pacific Ethanol Plants was transferred to PE Holdco LLC. Production was resumed at the Magic Valley facility in January 2010 and at the Stockton facility in December 2010. The objective is to resume operations to an annual rate of 200 million gallons at all four Pacific Ethanol Plants.
The mammoth ethanol plant in Keyes, Iowa is scheduled to go back into operation this week, after sitting idle for more than two years. Forty-five people are employed at the Keyes plant, which is AE Biofuels' first operation in the United States. The ethanol produced in Keyes will be trucked to blending facilities within about 50 miles. About $8 million will have been invested in retrofitting the plant by the time it reaches full production in a few months.
In a Hearing of the Senate Committee on Agriculture, Nutrition and Forestry POET CEO Jeff Broin relayed research data to committee members that showed how ethanol already keeps retail gasoline prices about 17 cents per gallon lower, saving drivers more than $100 per year. According to Broin the impact could be much greater through future expansion. POET is the world’s largest producer of renewable fuel.
A long-term roadmap for biofuels recently released by the International Energy Agency shows that biofuels have the potential to comprise 27 percent of the global transport fuels market by 2050, an impressive increase over the industry’s current 2 percent share.
The conventional biofuels and advanced biofuels industries must address separate hurdles in order to continue to expand and contribute to lessening greenhouse gas (GHG) emissions, according to the report. Conventional biofuels’ conversion technologies should be improved to increase efficiency, lower costs and improve the overall sustainability of the production process. Because the advanced biofuels industry is yet to reach commercialization, it requires further research and development and strong policy support, the report stated.
McIlvaine’s Biofuels Update and Projects keep subscribers current with all the latest happenings in the biofuel industry.
You can register for our free McIlvaine Newsletters at: http://www.mcilvainecompany.com/brochures/Free_Newsletter_Registration_Form.htm
Bob McIlvaine
President
847 784 0012 ext 112
rmcilvaine@mcilvainecompany.com
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