"FlowmastEER Balancing Damper Brochure"
FluwMastEERTMBalancing Damper The solution for pulverized coal flow imbalance: an adjustable orifice that balances coal flow to each burner. As air emission regulations for pulverized coal-fired To overcome these difficulties, GE Air Quality Systems power plants become increasingly stringent, the and Services (AQS&S) is offering the PC importance of maintaining equal fuel flow to each FlowMastEERTM. This simple, rugged, adjustable orifice burner becomes more critical. Differences in coal pipe provides the ability t o balance coal flow t o each routings and in pulverizer outlet characteristic can burner. Additionally, as changes occur in the cause variations of as much as 30 percent in coal flow combustion system, the FlowMastEERTMcan be t o each burner. Typically. when a coal flow imbalance readjusted periodically t o maintain optimum coal problem is recognized, the solution has been to flow balance. conduct a detailed engineeringlcomputer analysis and to then install orifices in the coal pipes to balance flow. Balanced coal flow is essential to minimizing NO, This can be an expensive and time consuming process emissions. It can also help to: that is by no means fool proof. As the various compo- nents in a combustion system (pulverizers, coal pipes, Reduce slagging and fireside corrosion burners, and the coal properties) change overtime, the Minimize excess air and reduce unburned carbon coal flow can also change to a different unbalanced Avoid tube metal hot spots which can cause state. Determining the correct orifice size also tends t o premature tube failure be a trial and error process resulting in the installation Reduce excessive coal pipe erosion of several orifices before the optimum coal flow balance is found. The FlowMastEERTMis manufactured in a range of sizes t o fit any coal pipe. It is available as a weld-in piece, with flanges for bolted connection, or grooved for use with a Victaulic7 type coupling. The orifice plates are coated with an abrasion resistant ceramic material t o assure long service life. The FlowMastEERm Balancing Damper is a ruggedly built, weld-in piece ... and features orifice plates coated with abrasion resistant ceramics. GE Power Systems Air Quality Systems & ServiceJ After installation of the PC FlowMastEERTM,AQS&S recommends utilizing the RotorProbeTMPulverized Coal AOS&S offers these products, along with technical Sampling System to determine both the size distribution support services, direct sale, installation and service of and the mass flow of the coal in each coal pipe. The the PC FlowMastEERTM,sales and rentals of the RotorProbeTMutilizes the International Standards RotorProbeTMPulverized Coal Sampling system and Organization (IS01 recommended method for sampling on-site training of your staff t o determine and correct pulverized coal in a primary air stream. pulverized coal flow imbalance problems. The RotorProbeTM system's manually rotatable probe If you think you have a coal flow balance problem, samples the coal-air mixture at the center of 64 equal AClS&S can help. We have the specialized instrumen- cross-sectional areas of the coal pipe. Sampling takes tation and expertise to assist you in developing solu- about four minutes per coal pipe. The sample is then tions t o all of your combustion related problems. removed, weighed, and sieved t o determine mass flow and size distribution. FlowMastEER' Results Seward Station Pulverizer " A Burner A1 A2 A3 Baseline -13%' -4% +17% L Adjustment -26% +11% +15% Final -3% +2.5% +.5% 2 Months Later +4% -2% -2% "Percent is deviation from average FlowMastEEP Balancing Dampers can provide "balanced coal flow to each burne,: It's re-adjustable to optimile coal flow as ior more information contact: changes occur in the combustion system. Mc Bob Waltz GE Power Systems 1345 North Main Street Orrville, OH 44667 phone: 30.682.4007 fax: 330.684.21 10 email: bob.waltzt3ps.ge.com or visit us at gepoweccom/aqs GE Energy and Enviroomentsl Research Corporation IEER1 is B wholly-awned SubSidiaryof General Electric. O G E Power Systems 2001 GE Power Systems GEb13135 gepoweccom