The pulse detonation technology behind the SHOCKSystem™ successfully removed built up ash from the horizontal reheater, resulting in increased economizer operating temperature and decreased exit gas temperature.   SHOCK STORY: ECONOMIZER STAGGERED FIN DEMONSTRATION Current Situation: 600+ MW boiler Burns a blend of Powder River Basin (PRB) and Bituminous Coal Ash pile growth on upper economizer (staggered fin tube) along front wall cannot be removed by existing half retract sootblower Results in high boiler exit gas temperature and frequent cleaning outages Solution: Installed a demonstration combustor above the upper economizer Removed a Half Retract Sootblower that was occupying a manway Utilized newly opened manway for the combustor Performance: Operation occurred over eight day shifts Economizer temperature differential increased during cleaning events Video confirmed pluggage removed from gas lanes Bottom-Line Impact: Hopper loading indicated significant ash removed from economizer tube bundles Local instrumentation data showed 50°F increases in gas temperature differential across upper economizer Economizer exit gas temperature on SHOCKSystem™ side decreased by 10°F compared to other side Led to a proposal   Histogram Comparing North & South Economizer Temperature Before (PI Data) Histogram comparing North and South Economizer Exit Gas Temperatures shows South Side temperature higher than North Side Temperature during the period BEFORE SHOCKSystem™ operation. Cut out view of 4-day time period before SHOCKSystem™ operation   Histogram Comparing North & South Economizer Temperature During (PI Data) Histogram comparing North and South Economizer Exit Gas Temperatures shows South Side Temperature lower than North Side Temperature in the period DURING SHOCKSystem™ operation. Cut out view of 4-day time period during SHOCKSystem™ operation   < Economizer Heat Transfer Performance Demonstration Shock Stories Index Horizontal Reheater Demonstration >     Email us to learn more about our next generation ash removal product.   PW Privacy Policy  |  PW Terms + Conditions  |  PW Site Map         Boiler Cleaning News       SHOCKSystem™ Receives Gold CQIA Designation     AEP Rockport Purchases Second SHOCKSystem™     EnergyTech: SHOCKSystem™ Reduces Erosion (PDF)     Energy Central: Backpass Cleaning Comparison (PDF)     Power: Harnessing Detonation Waves (PDF)     EnergyTech: Advanced Sootblower Technologies (PDF)     Power: Shockingly Clean Boiler (PDF)     [ Boiler Cleaning News Archive ]       Shock Literature       White Paper: Tube Erosion     Detonation-Based Online Cleaning     Comparison: Acoustic Horn vs SHOCKSystem™     Comparison: Sootblower vs SHOCKSystem™     Meets Local, State and National Safety Regulations     [ Literature Archive ]       Shock Stories       Backpass Ash Platenization Removal     Economizer Demonstration     Economizer Demonstration     Economizer Demonstration     Economizer Bridging and Platenization Removal     [ Shock Stories Index ]       Pulse Detonation News       Popular Science: After Combustion - Detonation     Flight International: Pulse Power     Aviation Week: Taking the Pulse     [ Pulse Detonation News Archive ]       Shock Video   Span shot of shock tube extending into boiler region with use of combustor bend [mpg size: 498 KB]     Support hangers and combustor bends give the SHOCKSystem™ installation flexibility [mpg size: 563 KB]     Shock Pics   Five-picture time-elapsed series of ash removal in boiler region. [5 Pics]     The SHOCKSystem™ blasts through all types of ash. [5 Pics]

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