Author Topic: Proper technique  (Read 4166 times)

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droneRx

  • Guest
Proper technique
« on: March 28, 2002, 06:39:00 PM »

PrimoPyro

  • Guest
Methods
« Reply #1 on: March 28, 2002, 06:42:00 PM »
Being as this is an inquiry of methods, I think it would belong in the Methods Discourse.

As for your question, I would not know personally. Sorry.

                                                  PrimoPyro

Vivent Longtemps La Ruche!

Fully_Auto

  • Guest
What are you planning to use to hold the liquid ...
« Reply #2 on: March 28, 2002, 07:27:00 PM »
What are you planning to use to hold the liquid Ammonia?

pandemonium

  • Guest
stainless steel and/or teflon
« Reply #3 on: March 28, 2002, 07:56:00 PM »
and need it to be pressure capable, brass threading will deteriorate and taint the contents some, quickly if brass is used, eventually safety will be compromised too. Don't overfill, 1/3 is prudent.

Get gloves, goggles, respirator. Extra layers of neoprene or something. The shit is no joke and will freeze/burn holes in your flesh and shrivel your eyes to raisins quick.

8)

droneRx

  • Guest
teflon
« Reply #4 on: March 28, 2002, 08:13:00 PM »
Swim wishes to hear opinion on whether use of thick walled plastic bottle filled 1/3 full and duct taped will suffice as adequate short term storage unit. Container will be kept in icewater slurry until ready to use.

Fully_Auto

  • Guest
You have a Teflon bottle? How thick are the ...
« Reply #5 on: March 28, 2002, 08:26:00 PM »
You have a Teflon bottle?
How thick are the walls?
Is the cap airtight?
Why do you feel you need duct tape?

pandemonium

  • Guest
no perfect seal then
« Reply #6 on: March 28, 2002, 08:41:00 PM »
then keep the plastic container as cold as possible, icepacks in a cooler around it might slow the stuff from boiling, but a better bet would be to let it leak off a little, hurry getting it to a proper container, where pressure can keep it stable and confined. Try to keep it away from splashing water or anything else(contamination!). Wet towels over the not perfectly sealed cold container will catch the NH3 gas in water, so it might not choke you while you boogy to storage. Its bad shit, best not to fuck with it, Igor does that, not the slow and stodgy bear. 8)  :P

droneRx

  • Guest
useful info
« Reply #7 on: March 28, 2002, 10:00:00 PM »
Thanks for the useful info, but swim is curious how long it takes to condense a gallon volume of NH3 from a tank?

pandemonium

  • Guest
Not long
« Reply #8 on: March 28, 2002, 10:06:00 PM »
Igor says it seems like forever when you just twisted your ankle, the shit burned your wrist, the helicopters are getting closer and dogs are barking all around the field tank! :o


the difference between theory and practice is...practice.

Chromic

  • Guest
No, no, no...
« Reply #9 on: March 29, 2002, 12:16:00 AM »
>Swim wishes to hear opinion on whether use of thick walled plastic bottle filled 1/3 full
>and duct taped will suffice as adequate short term storage unit. Container will be kept
>in icewater slurry until ready to use.

Ice/water can only chill a container to about -10C in SWIM's experience (yes, SWIM knows it's possible to get it colder with CaCl2/water but not cold enough). This is going to be a serious problem for you! The BP of ammonia is -33C. You do not want to put liquid ammonia into a bath that is able to boil off the ammonia! You must think this through thoroughly!

You should be using a dry-ice/acetone bath to temporarily store the liquid ammonia... if you're not able to reach this temperature, you should be using a styrofoam container or dewar flask to temporarily store the liquid, and you must realize that this shit will fume like hell as it evaporates.

The answer to your question depends on how fast the ammonia comes through the valve, and how efficiently your condenser is able to chill the liquid ammonia

pandemonium

  • Guest
Igor says
« Reply #10 on: March 29, 2002, 12:31:00 AM »
that It comes out cold, and liquid, and keeps things cold around it when enclosed. it is not just a jet of gas, although the warmer the day the gassier it will be. :-[


The difference between theory and practice is...practice. 8)

micro

  • Guest
listen up!
« Reply #11 on: March 29, 2002, 01:44:00 AM »

The worst mistake you can possibly make other than not wearing face and eye protection is to be in a hurry.This shit will eat your lunch.So before you go out and seriously injure yourself,listen up!First of all it takes roughly 5 minutes to fill a converted 5 gallon propane tank[no brass or copper] up to the 80% mark with the nursing tank valve approximately 1/8 a turn open.If you open it any more than that it becomes much to loud not to mention wasteful.Its probably safe to say you don't have the proper hose fittings to adapt to the nursing tank.So you will need to go about it differently.Don't do anything stupid like attach a crude fitting hose and run it into a water cooler..........If you'll notice there are 3 valves coming off the nursing tank[some only have 2].Locate the one that is most forward of the tank.This is the one that supplies the nitrogen applicator as it pulls off the bottom.......If you notice right above the valve there is a 1/4 plug.Back that out and replace with 1/4 nipple followed by a 1/4 by 1/2 bushing with a 1/2 teflon hose conection inserted in it.Finally you will need roughly 10' of 1/2" plastic hose.You will need to back the valve assembly out from the propane tank and apply new teflon.Now attach your 1/2 hose to the teflon hose connection.Be sure it is pushed all the on.No need for a clamp as there will be no pressure.Now,you are probably wondering whats going to stop the nh3 from coming out of the original hose fittings.If you'll notice each valve has a small chain attached to it.That chain is attached to a dust cap.Take the cap and screw it down securely.Now place the other end of your 1/2 hose into the [bottom] of propane tank.Crack the valve open until you see vapor coming out of propane tank.Adjust until you reach the 1/8 a turn open.This way you build no pressure and there are no leaks.Takes about 5 minutes.Once through,be sure to back your connection out and replace the plug back into the tank.Be sure to torgue your valve assembly back to the propane tank.In the interest of safety it would be worth the time to learn some of the basics concerning nh3.

http://www.nh3.com/

    Of course swim does not engage in such activity.....