SHOCKSYSTEM™ -- Shock Stories: Economizer Heat Transfer Performance Demo

The SHOCKSystem™ demonstrated ability to clean economizer tube rows, resulting in improved economizer exit gas temperatures.

SHOCK STORY: ECONOMIZER HEAT TRANSFER PERFORMANCE DEMO

Current Situation:

500+ MW boiler

Burns 100% Power River Basin (PRB) Coal
Boiler is base loaded
A decline in economizer heat transfer performance causes exit gas temperature to increase over time

Solution:

Performance:

Removed upper economizer platenization from tube rows more than 15' from left side wall
Removed lower economizer platenization from tube rows more than 30' from left side wall
Middle economizer was not heavily platenized prior to demonstration
Analyzed ash accumulations in the hoppers before, during and after demonstration
Operation resulted in significant left side wall hopper loading; indicating successful removal of built-up ash from the left side of the economizer
Left side wall gas temperature leaving the economizer decreased by more than 50°F

SHOCKSystem's™ Bottom-Line Impact:

Results: SHOCKSystem™ Removed Platenization Between Tube Rows
Before SHOCKSystem™		After SHOCKSystem™
Significant platenization can be seen between tube rows prior to use of SHOCKSystem™		Reduction in platenization between tube rows is evident after use of SHOCKSystem™

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