Here are a few sample applications covering a wide range of applications. Feel free to inquire about your application.
Convection Pass - 1300 MW Eastern Coal
first presented at the 2007 AEP BRO conference
TVA’s cleaning objective was to improve overall cleanliness in the economizer and to remove the large piles of fly ash across the front wall that eluded the sootblowers.
Two WaveMaster™ Acoustic Cleaners started operation on the economizer of Unit 2 in January 2006. Cleaning results prompted the installation of two Acoustic Cleaners on Unit 1, which started operation in September 2006. This paper details the installation, hardware and results that were obtained by using the WaveMaster™ Acoustic Cleaning System.
Coal: bituminous coal
Ljungstrom Air Preheaters - 600 MW 31.5 VIT PRB
first presented at the 2002 EPRI Intelligent Sootblowing Workshop
Acoustic cleaning of fireside deposits has been done for over twenty years. It has been used as a remedial tool for most applications. Infrasound has been shown to be effective in removing ash deposits in applications where large heat exchanger elements are used. It has been particularly effective in removing the aggressive deposits formed by PRB ash from regenerative air heaters. Xcel Energy’s Roy Tolk Station has been using infrasound to clean Ljungstrom air heaters subjected to PRB deposits since 1996. Data is presented, showing the effectiveness of infrasound versus sootblowing as measured by pitot tube tests of relative flow rates in two side-by-side air heaters. Criteria for equipment justification, cleaning mechanism, hardware, performance optimization and cleaning results are all discussed.
Ljungstrom Air Preheaters / Finned Tube Eco - 400 MW & 33.5 VIT PRB
first presented at the 2006 EPRI Intelligent Sootblowing Workshop
When the acoustic cleaners on Unit 2 economizer were placed into service in early 2004,
their effect liberated crusty deposits that had taken residence on turning vanes above
the air preheater inlet. This caused these deposits to impact the top of the air preheater
elements and restrict gas flow through the air preheater. A subsequent outage showed
that the turning vanes had lost their long-time deposits which were now on and in the
air preheater elements. Operation of the economizer acoustic cleaners was curtailed
until additional acoustic cleaning could be applied to the air preheater.
Acoustic cleaners were then installed on the economizer and air preheater of Unit 1 in
the Fall of 2005. Tramp deposits on the turning vanes and internal supports were
manually removed to prevent a repeat of the experience on Unit 2. The boiler operated
with the acoustic cleaners cycling until a brief outage in April of 2006. The low pressure
drops being experienced had operations personnel convinced that the economizer and
air preheater were staying very clean.
Coal: Cordero Rojo
Finned Tube Eco - 575 MW #6 Oil
first presented at the 2004 EPRI Intelligent Sootblowing Workshop
Acoustic cleaning of fireside surfaces with low frequency sound has been proven to be effective on a wide variety of deposits. One unique property is the sound’s ability to remove pre-existing deposits over time. When this is combined with a nearly uniform coverage, tube banks can be restored to an “as- new” condition.
Dynegy Northeast Generation’s Roseton Station has been using low frequency sound to clean an extended surface economizer subjected to heavy oil fired deposits since the winter of 2002. Data is examined, showing the effectiveness of acoustic cleaning for removing existing deposits. Boiler profiles are compared from before and after acoustic cleaning, as well as when the units were new.
Criteria for equipment justification, cleaning mechanism, hardware, performance optimization and cleaning results are all discussed.
CO-boiler with Catalyst Fines
This particular refinery experienced opacity excursions as a result of sootblowing in the CO-boiler.
A single acoustic cleaner was installed during the shutdown.
Circumstances prevented the boiler from being cleaned before startup.
CFB with WH-boiler / PET Coke & Coal
first presented at the 2013 EPRI Heat Rate Improvement Conference
JEA's Northside Station consists of two 220 MW CFB unit with WH-boilers burning a mixture of PET Coke and Coal.
The economizers were notoriously difficult to clean with the sootblowers. Resulting in tube erosion, loss of performance, and significant off-line cleaning efforts.
JEA conducted an internal review of the project based on Six Sigma methodology. It was concluded that the acoustic cleaners improved the heat rate.
Stoker Fired boilers at a paper mill / 60,000 lbs/hr
FutureMark Manistique is a paper mill in the Upper Penninsula in Michigan.
The mill is using two stoker fired boiler to produce the necessary steam for the paper process. Previously, frequent sootblowing would result in tube leaks and unscheduled outages on the paper machines, causing significant losses due to loss of opportunity.
FutureMark installed two WaveMaster™ Acoustic Cleaners and after one year of operation removed the soot blowers entirely.
Both boilers are kept clean continuously, and no off-line cleaning is required.
Convection Pass - 535 MW PRB
AEP’s 535 MW Flint Creek Station has been using WaveMaster™ Acoustic Cleaning since 2007 to prevent ‘laning’ in the economizer.
An inspection report detailing the observations after 5 months of service is available below.