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  • Users: JEB66
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  1. JEB66

    304H oxide formation

    Recently we had several Superheater overheat failurs on a new bank of tubes. The platens are made from SA213 TP304H. They are less than 2 years old. The failure is the result of severe exfoliation of the magnetite scale that plugged the tight radius bends and ID transitions. This stuff is...
  2. JEB66

    Co-Firing wood and Coal

    I am part of a team studying the feasibility of co-firing wood into our coal fired fleet for the expected CO2 regulations. When we can, I plan on squeezing in dedicated burners. But some of our units do not have the space for dedicated burners. So I wish to find some details/pifalls of how...
  3. JEB66

    Getting rid of a link

    I inheirited an excell file that has a link to a non existant file. I have talked to the author and this link is no longer needed. But I cannot find the cell with the referenced file. I have ran edit-find on every woork shhet and that reference is simply not found. How do I delete this link...
  4. JEB66

    ACFB Aux Power

    Can any of the Atmospheric Circulating Fluid Bed voiler users tell me what their aux power power usage is? Please tell me your net load and aux load, so I know we are dealing with apples to apples. I just want to verify some numbers I got from a study I paid for. The aux power they stated was...
  5. JEB66

    NH3 Slip

    Does anybody have some good rules of thumb for the amount of NH3 in the gas stream (ppmv) when looking at the amount of NH3 in the ash (mg/Kg)?
  6. JEB66

    Excell Calculation Order

    I Have a few spreadsheets that take several minutes to update. While waiting for them to finish, I noticed that they populate from bottom to top. Would the spreadsheet update faster if I made the dependant cells go from bottom to top instead of top to bottom?
  7. JEB66

    Ammonia Removal

    Are there other means of removing ammonina from wast water ponds other than alge and the nitrification process? With the alge, winter time would be hard to keep the process going.
  8. JEB66

    Dutchman

    For many years I have been wondering where the term "dutchman" came form. Every time a new engineer comes along, they ask me about the origins and I have to say, it is a very old term. Does anybody have any insight? For those that have not heard of the term, it is used for a new piece of tube...
  9. JEB66

    SO2 Removal

    Does anybody have expierence with using some sort of dry absorbant without adding a removal system. I am intrested in just knocking out some of the SO2 without a lot of capital money. I can imagine problems with the dry ESP's if the injection rates are too large, so I do not know if the...
  10. JEB66

    Filtering out non number values

    I use excell to sort and average some data collected via OSI's plant information system. Ocasionally, there will be a problem with the server or the instruments which caused the archived value to read "invalid" or "bad data" or "no good data", whatever the divice is configured to read at those...
  11. JEB66

    Combustion and Virbration

    I have been told by a friend about some demonstration where sonic virbrations were used to improve combustion. Has anybody heard of this, and if so, what is this called? I would like to learn more about this, if it is true.
  12. JEB66

    Refractory Service Life Vs Ash Chemistry

    I have a few wet bottom boilers which are expierencing reduced refractory life. These units changed fuels which brings a change in ash chemistry, more basic or more acidic. So, I would like to know if there is some information out there which indicates a nned to change the refractory...
  13. JEB66

    Refractory Service Life Vs Ash Chemistry

    I have a few wet bottom boilers (molten slag which runs over refractory lined floor tubes) which are expierencing reduced refractory life. These units changed fuels which brings a change in ash chemistry, more basic or more acidic. So, I would like to know if there is some information out...

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