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Recent content by rezaeb

  1. rezaeb

    distillation tower trays damaging

    Dear Emmanuel, Thank you for the article. I downloaded that and am busy with it. But as I explained for Reena there are two separate LI and LT showed almost same reading. Since the plant is currently stopped, both of them will be checked. But I believe that tower was operating below dump point...
  2. rezaeb

    distillation tower trays damaging

    Dear Reena1957, Thank you very much for you reply. Kindly note the followings: 1. There are two separate LI and LT and both showed almost same level well below feed inlet/reboiler vap. outlet nozzle. On the contrary, we faced with low level, showing a sudden evaporation. 2. Tower was operating...
  3. rezaeb

    distillation tower trays damaging

    Hi guys, Has anyone experienced with damaging of distillation tower trays during initial start up. This tower is desigend to separate methanol from water while for intial start up only water is used for warming up. A gas and a steam reboiler (total two separate reboilers)supply heat to tower...
  4. rezaeb

    Cupper Phthalocyanine

    Dear kenvlach, I'd like to appreciate your kind and valuable reply. I'm trying to find out BASF's production method. Your guidlines are very useful. Thanks.
  5. rezaeb

    Cupper Phthalocyanine

    It would be highly appreciated if someone can introduce me some guidlines, references or litrature for manufacturing of cupper phthalocyanine from phthalic anhydride, urea and cupper chloride. Thanks in advance
  6. rezaeb

    Autothermal Reforming Catalyst

    It would be highly appreciated if anybody can tell me whether steam reforming catalyst can be used inside autothermal reformer in a methanol plant, considering the operating condition of the latter rather than former. Normally these two reformers need their own catalyst types in an ammonia...
  7. rezaeb

    Metahnol Catalyst particle density

    Dear all, For design consideration I need to know methanol catalyst particle density. Bulk density for this type of catalyst ranges between 1000-1250 Kg/M3, depending on the manufacturer of catalyst. It would be appreciated if somebody can give me a figure and/or some references as guidline...
  8. rezaeb

    Methanol Synthesis Kinetics over Zn-Cu-Al catalyst

    Dear all, I'm working in a methanol plant. It's needed to simulate MeOH syn. loop using hysys software. For synthesis reactor it's prefered to use kinetic reactor. What I don't know how to deal with is reaction rate equation based on Arrhenius form. I've tried to apply different literature...
  9. rezaeb

    Methanol Synthesis kinetics over Zn-Cu-Al catalyst

    Dear all, I'm working in a methanol plant. It's needed to simulate MeOH syn. loop using hysys software. For synthesis reactor it's prefered to use kinetic reactor. What I don't know how to deal with is reaction rate equation based on Arrhenius form. I've tried to apply different literature...
  10. rezaeb

    What are the criteria for selecting type of a cooling tower fillings

    Dear quark and abcmex, Thank you two, very much. I got my answer which helped me too much. I asked our supplier the matter and they believe upto 50 ppm (suspended solid)would be tolorable with their film type fills. Thanks once more. rezaeb
  11. rezaeb

    What are the criteria for selecting type of a cooling tower fillings

    I'd like to know whether the quality of water is the main factor in selecting cooling tower fillings (film type and/or splash bar). It seems that film type is much more prone to be plugged than splash bar in case of a poor water quality. If this is the case, how much is the limit.
  12. rezaeb

    How to increase the purity of CO2 from lime furnace stack

    Dear PRG I'd like to appreciate your kind advise, but what I'm seeking is a conventional absorption-regeneration process using a selective absorbant. The reason is at the moment we have two idle towers with a duty of absorption-stripping CO2. However, they may need to be revamped. I've heard...
  13. rezaeb

    How to increase the purity of CO2 from lime furnace stack

    I'm working in a sodaash plant using solvay process. in order to supply CO2 as feedstock, lime furnace is used. CO2 content in the flue gas is about 20%-25%. Due to some operational problems this amount of purity have to be increased to min. 50%. Is there anybody who can tell me, how? Taking...

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