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Thread: Distillation: Calling Everyone Having Good English

  1. #1 Distillation: Calling Everyone Having Good English 
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    Well, English isn't my first language while I want to write my project report in English. I've just moved to the Netherlands and my Dutch isn't good either.

    So, I need you to mention all equipments you need to make distillation. I've managed to find the following equipments.

    • 1. Beaker.
      2. Spatula.
      3. Analytical balance.

      4. Three-neck round-bottom flask.
      5. Heating mantle.
      6. Lift boys.
      7. Stir bar.

      8. Condenser.
      9. Hose.

      10. Still head.
      11. Thermometer.

      12. Mold.


    What I still need is as follows.

    • 13. Something under the lift boys to make all steady. It also has a "stick" like a flag pole.
      14. Something to connect the head of the round-bottom flask with the tool I mention just above this sentence. It also keeps the flask steady.
      15. Something like a stick. In the end of the stick you can put your stir bar.
      16. Something placed between the flask and the stick so that the stick is steady.
      17. A machine to stir.


    Thanks in advance.


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  3. #2  
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    You might check this page: http://journeytoforever.org/biofuel_.../manual11.html for a picture and further information on distillation.

    For now, I will add that you are too ambitious in your equipment. You don't need a three-necked flask; a normal round bottom flask is good enough. Nor do you use a magnetic stirrer and stirring bar with routine distillation. You use that equipment only to dissolve a solid, and then you remove the stirring bar before distillation.

    Of course, you might need the three-necked flask and magnetic stirrer for the steps before distillation but you have not mentioned any additional steps. What is the entire experiment or demonstration?
    ¬*


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  4. #3  
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    Quote Originally Posted by SteveF
    You might check this page: http://journeytoforever.org/biofuel_.../manual11.html for a picture and further information on distillation.

    For now, I will add that you are too ambitious in your equipment. You don't need a three-necked flask; a normal round bottom flask is good enough. Nor do you use a magnetic stirrer and stirring bar with routine distillation. You use that equipment only to dissolve a solid, and then you remove the stirring bar before distillation.

    Of course, you might need the three-necked flask and magnetic stirrer for the steps before distillation but you have not mentioned any additional steps. What is the entire experiment or demonstration?
    ¬*
    I'm currently making biopolymer from agar, starch, sucrose and maltitol. First, I mix all of them and add some water. Then, I place all in the round-bottom flask in the heating mantle. So, the machine stirs while I'm heating the solution. In other words, I need a three-neck round-bottom flask. The condenser in the left neck, the stirring machine in the middle and the thermometer in the right neck. Hope that this is understood.
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  5. #4  
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    Yes, I understand. You are trying to do all of your steps in a single flask. Why not use two steps? A normal flat-bottomed Erlenmeyer flask for making the polymer, and a separate round-bottomed flask for distillation?

    The flat- bottomed flask makes it easier to use a magnetic stirrer on a heated base. If you are sticking something in from the top to do your stirring, you do not use a magnetic stirrer. Use something that resembles the kitchen device called a hand-held mixer. Or stir by hand with a glass rod.

    I do not know why you have the distillation step. Is the polymer soluble or insoluble? If it is insoluble, as I think it should be, use filtration instead.
    ¬*
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  6. #5  
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    Quote Originally Posted by SteveF
    Yes, I understand. You are trying to do all of your steps in a single flask. Why not use two steps? A normal flat-bottomed Erlenmeyer flask for making the polymer, and a separate round-bottomed flask for distillation?

    The flat- bottomed flask makes it easier to use a magnetic stirrer on a heated base. If you are sticking something in from the top to do your stirring, you do not use a magnetic stirrer. Use something that resembles the kitchen device called a hand-held mixer. Or stir by hand with a glass rod.

    I do not know why you have the distillation step. Is the polymer soluble or insoluble? If it is insoluble, as I think it should be, use filtration instead.
    ¬*
    When I asked my laboratory assistant, he told me that we had only a smaller project in our first year. So, he seems to keep all as simple as possible. We don't make any "real" biopolymer though. We just have to "learn" how to make it.

    Thanks for your effort anyway. Although I've simply not found a diagram yet that uses a three-neck round-bottom flask.
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