The SHOCKSystem™ successfully removed baked-on ash deposits, as well as cleared vertical bridging/platenization between tube rows.   SHOCK STORY: ECONOMIZER DEMONSTRATION Current Situation: 550 MW Boiler Burns a blend of Powder River Basin (PRB) and Bituminous Coal Relatively clean Economizer with occasional platenization; Primary Superheater shows more fouling than Economizer Unit 1 exhibits fouling in the two Primary Superheater bundles and two Economizer bundles in the backpass Platenization (i.e. vertical blockage of the backpass tubes) degrades boiler efficiency and raises economizer exit gas temperature above the allowable 700°F Det-cord blasting is required for removing the platenization Some ash piles are also present but are a minor concern Solution: Installed a demonstration combustor on the Upper & Lower Economizer Bundles Utilized an existing manway opening on the South Side Wall Performance: The SHOCKSystem™ was operated intermittently and with varying power levels Low exit temperatures seen in the two month timeframe which corresponds with the SHOCKSystem™ operation period SHOCKSystem's™ Bottom-Line Impact: Economizer exit temperatures on the demo side dropped relative to corresponding exit temperatures on the other side in direct correlation to the power and timing of SHOCKSystem™ operations Economizer exit temperatures dropped by 30°F after on date which corresponds with first day of operation Economizer exit temperatures on both sides were 20°F- 30°F lower in two month timeframe which corresponds with the operation period Variance seen in economizer exit temperatures was smaller during the periods when the SHOCKSystem™ was operated   Economizer Exit Temperature South Histogram Equal number of data points used for before and during operation Histograms comparing South Side economizer exit temperatures before and during SHOCKSystem™ operation period shows lower exit temperatures and smaller standard deviation in exit temperatures during SHOCKSystem™ operation period. Standard deviation during four-day SHOCKSystem™ operation: 5.5 Four-day standard deviation before SHOCKSystem™ operation: 12   < Economizer Demo Shock Stories Index Economizer Demo >     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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