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Heat Recovery & Fuel Savings |
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Blowdown Systems Used for purging destructive solids from the boiler while controlling cycles of concentration. The heat recovery feature allows the capture of up to 90% of the heat which would otherwise be wasted. The recovered heat is transferred to the feedwater before entering the boiler system. Clicking on the following links will take you to detialed information on Cleaver-Brooks and Pennsylvania Separators Blowdown Systems. We will be happy to assist you with any of your needs; please contact us for more information. Visit Cleaver-Brooks, visit Pennsylvania Separator.
Economizers Flue gases from large boilers are typically 450 - 650°F. Stack Economizers recover some of this heat for pre-heating water. The water is most often used for boiler make-up water or some other need that coincides with boiler operation.Boiler stack economizers are simply heat exchangers with hot flue gas on one side and water on the other. Or, in direct contact condensing units, the make-up water is in direct contact with the flue gases. The savings potential is based on the existing stack temperature, the volume of make-up water needed, and the hours of operation. Economizers must be sized for the volume of flue gas, its temperature, the maximum pressure drop allowed through the stack, what kind of fuel is used in the boiler, and how much energy needs to be recovered. Economizers are available in a wide range of sizes, from small coil-like units to very large waste heat recovery boilers. Clicking on the Cannon Boiler Works link will take you to detialed information on Cannon economizers. We will be happy to assist you with any of your economizer needs; please contact us for more information. Visit Cannon Boiler Works.
Heat Recovery Steam Generators A heat recovery steam generator or HRSG is a heat exchanger that recovers heat from a hot gas stream. It produces steam that can be used in a process or used to drive a steam turbine. A common application for a HRSG is in a combined-cycle power station, where hot exhaust from a gas turbine is fed to an HRSG to generate steam which in turn drives a steam turbine. This combination produces electricity more efficiently than either the gas turbine or steam turbine alone. The HRSG is also an important component in cogeneration plants.
HRSGs normally consist of three sections: an LP (low pressure) section, a reheat/IP (intermediate pressure) section, and a HP (high pressure) section. Each section has a steam drum and an evaporator section where water is converted to steam. This steam then passes through superheaters to raise the temperature and pressure past the saturation point.
Some HRSGs include supplemental, or duct, firing. These additional burners provide additional energy to the HRSG, which produces more steam and hence increases the output of the steam turbine. Generally, duct firing provides electrical output at lower capital cost but inferior efficiency compared with combined cycle generation. It is therefore often utilised for peaking.
Trabue Industrial offers customized customized heat recovery systems for applications including heat recovery for turbines from 1 MW to 45 MW, waste heat, incinerators, economizers, and air heaters from Energy Reovery International. Please visit the Energy Recovery International. website for detialed information on all of their products.
Oxygen Trim Systems
Used to monitor excess air (oxygen) in the flue gas, this device will automatically make combustion adjustments to bring the fuel/air ratios into proper and safe tolerances, saving thousands of fuel dollars annually because of variations in barometric pressure, humidity, ambient temperature, etc. Clicking on the following link will take you to detialed information on Cleaver-Brooks Oxygen Trim Systems. We will be happy to assist you with any of your O2 Trim System needs; please contact us for more information. Visit Cleaver-Brooks
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