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  1. ThijsM

    DIN 28007 - Tolerances for columns - Part 1 Question

    Hello Racookpe, Thank you for your reply. We need this figure for the consequence analysis and the HAZOP that we do, we need to know the pressure at which the vessels, columns and heat exchangers will burst. This is according to these standards, and therefore I would like to have this figure...
  2. ThijsM

    DIN 28007 - Tolerances for columns - Part 1 Question

    Hello all, The columns and vessel in our Ethanol distillation plant have been designed according to a German standard called DIN 28007. Unfortunately, there is no EN or NEN standard that is equivalent to this standard. At least, not to my knowledge, and these are the standards that my company...
  3. ThijsM

    Pressure increase when flow stops

    Hello, thanks for your thoughts. Eadwine, your description of the proces is right, and the reaction is exotherm, but why did that cause an increase in only the first 2 minutes of half a degree? I would expect a longer period. When the flow is brought back, the temperature decreases to the...
  4. ThijsM

    Pressure increase when flow stops

    The temperature I am talking about is in the mash-loop on the outlet of the fermenter (suction of the mash cooler pump), before the cooler. Another temperature sensor is located in the outlet of the cooler, also in the mash loop. Because of the power failure, the mash cooler pump stopped and...
  5. ThijsM

    Pressure increase when flow stops

    Damn, "pressure" in the title should be "temperature" of course!
  6. ThijsM

    Pressure increase when flow stops

    Hello, I am looking for a solution for the fact that we had a power failure yesterday and all pumps stopped operation in the plat. One of the pumps is used to sent mash to a cooler and when the flow stopped, we found a temperature increase of 0.5 degrees Celsius in 2 minutes and then the...
  7. ThijsM

    Purge rate during volume change

    Yes Casimo5, you are right, above 95% we want to collect the CO2. The working pressure is atmospheric with a open connection to 2 CO2 headers between which we will switch at above 95%. I have already solved the issue by calculating the concentration of CO2 in the vessel at different time...
  8. ThijsM

    Purge rate during volume change

    Hello, I hope you can help me with the following interesting question: We are working in a batch process with fermentation and I have a vessel that contains a gas cap of CO2. When we empty the vessel, air or CO2 is sucked in and the vessel is cleaned. During cleaning, fumes and formed and the...
  9. ThijsM

    Drain pipe / Syphon of the water seal design question

    Hello, I am looking at the design of the drain of our water seal and have a question about it. Hopefully you can help me with this. What is the function of the double (or quadruple) syphon? I am particularly interested in the syphon on the left. The one on the rigth is a vacuum breaker and...
  10. ThijsM

    Flare monitoring by infrared camera

    Kader, Thanks for your reply, the site of Holan Engineering was one of my sources to ask the questions about your experience with respect to IR steam control of the flare. But I would like to hear the opinion of people who have worked with it in pratice, instead of a "fantastic, great!"...
  11. ThijsM

    Flare monitoring by infrared camera

    Hello, Due to constant problems with the addition of steam to the flare, we are looking for possibilities to imporve the current situation. At the moment, we have a normal camera in the control room aimed to the flare. When we have a release of off gas, the operators open the steam further by...

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