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MWMushKing
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Registered: 11/10/16
Posts: 7
Last seen: 6 years, 4 months
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55 gallon drum as pressure cooker
#23841625 - 11/17/16 12:39 PM (7 years, 2 months ago) |
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Question. Can I use a 55 gallon drum to steralize bird seed and sawdust if it only hold Trev pounds of pressure? Could I just cook a longer amount of time and still steralize? Please help!!
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Thewhiteandblack
Gargamel



Registered: 08/28/16
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Re: 55 gallon drum as pressure cooker [Re: MWMushKing]
#23841659 - 11/17/16 12:49 PM (7 years, 2 months ago) |
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well that sounds real fucking safe
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MWMushKing
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Registered: 11/10/16
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It isn't unsafe. It only holds ten pounds safely. Any more would push it to unsafe handling. Thank you.
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MWMushKing
Stranger
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Re: 55 gallon drum as pressure cooker [Re: MWMushKing]
#23841737 - 11/17/16 01:18 PM (7 years, 2 months ago) |
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The question then is Can I steralize bird seed at ten pounds of pressure for a crush amount of time?
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Morel Guy
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Re: 55 gallon drum as pressure cooker [Re: MWMushKing]
#23841805 - 11/17/16 01:40 PM (7 years, 2 months ago) |
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Please don't say you are going to weld the drum shut.
It's going to be contaminated anyhow, unless you have a huge f'n flow hood.
People pasteurize in drums. Is this what you are thinking?
-------------------- "in sterquiliniis invenitur in stercore invenitur" In filth it will be found in dung it will be found
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krypto2000
Unknown


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Re: 55 gallon drum as pressure cooker [Re: Morel Guy] 1
#23841988 - 11/17/16 02:30 PM (7 years, 2 months ago) |
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If the question is, "Can I sterilize grain at 10psi" the answer is yes, you absolutely can. You can sterilize grains at atmospheric pressure, it's just a question of how long it will take.
Now if the question is 'Can I sterilize grains in this 55 gallon drum, and do it safely' we don't know. The fact that you're asking the question at all makes me think you are absolutely not capable of doing it however. I mean there are a lot of hurdles to sterilize a few quarts of grain in a commercial pressure cooker and yet you're planning to sterilize upwards of 55 gallons of spawn, start a HUGE grow, and yet don't even seem to understand the basic principles of sterilization and by extension I have to assume mycology. This is like someone posting on a sports car forum, "Is stainless steel a suitable material for building an interstellar craft?"
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Th3Issu3
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Re: 55 gallon drum as pressure cooker [Re: krypto2000]
#23843481 - 11/17/16 09:09 PM (7 years, 2 months ago) |
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You're insane bro!
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Gr0wer
always improving



Registered: 09/16/03
Posts: 6,056
Loc: El Paso, TX
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Re: 55 gallon drum as pressure cooker [Re: Th3Issu3]
#23843867 - 11/18/16 12:03 AM (7 years, 2 months ago) |
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You would want a SS or thick wall steel drum. I would play it safe and try 5 psi first, make sure you have at least 2 pressure reliefs in case one sticks. I'm considering using it on my new SS drums, especially for spawn where the extra temp will help.
My article on bulk steamers https://www.shroomery.org/13593/Bulk-Steamer-Designs
my 55 gal steamer ( now assembled just don't have pics on hand)

my old plastic open top steamer
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TheMadHatter420
Trusted Farmer


Registered: 10/12/16
Posts: 12,941
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Re: 55 gallon drum as pressure cooker [Re: Th3Issu3]
#23843869 - 11/18/16 12:04 AM (7 years, 2 months ago) |
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-------------------- JOIN THE POW WOW
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anthiawe
friendly stranger


Registered: 05/18/16
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Last seen: 2 years, 7 months
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you can do it. its exactly what I use to sterilize my sawdust blocks. I have a turkey fryer hooked up to propane. I have some 2x4s at the bottom with water and i can stack 40 - 45 5lb blocks inside. The lid get put on with a bolt to tighten it. The turkey fryer goes on full blast until steam forces out the sides of the lid, then I turn it down to maintain the pressure...dont leave when its on full blast or the lid will blow off. each load is in for three hours, although 2 hours has worked successfully which i will try again soon. This method is done by large scale growers all over Ghana, where i used to live and where i learned how to grow mushrooms. Its cheap, efficient, and it works. I also added cinder blocks to help hold the barrel in place when its on the fryer.
I'm not sure why you would only put 10 lbs in there? and its only unsafe if you walk away from it on full blast. Never had any problems with it.
-------------------- TEK compendium
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krypto2000
Unknown


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Re: 55 gallon drum as pressure cooker [Re: anthiawe]
#23844279 - 11/18/16 06:40 AM (7 years, 2 months ago) |
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Wait, he's only putting 10 lbs in there? Why not just use a regular pressure cooker?
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drake89
Mushroom Magnate



Registered: 06/26/11
Posts: 4,168
Loc: TN
Last seen: 4 years, 10 months
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Re: 55 gallon drum as pressure cooker [Re: krypto2000]
#23845280 - 11/18/16 01:43 PM (7 years, 2 months ago) |
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here is my old steam setup, i used 100 gal for the sub and 55 gal drum as the boiler. they would hold a seal on cool down and even had bags stay clean for 3 weeks one time when I went on vacation! That said, I never had much luck with consistent grain spawn in them. i only went to 4 psi in these babies. that's still over a ton of force on the big lids...

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Gr0wer
always improving



Registered: 09/16/03
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Re: 55 gallon drum as pressure cooker [Re: drake89]
#23856085 - 11/22/16 12:26 AM (7 years, 2 months ago) |
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I feel like 15 gal sanke kegs is all you really needed for boilers, how much evaporation were you seeing?
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drake89
Mushroom Magnate



Registered: 06/26/11
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Re: 55 gallon drum as pressure cooker [Re: Gr0wer]
#23856493 - 11/22/16 08:25 AM (7 years, 2 months ago) |
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Quote:
Gr0wer said: I feel like 15 gal sanke kegs is all you really needed for boilers, how much evaporation were you seeing?
i probably tried to keep about 15 gal in the boilers. only ever had to fill them up once a week or two. and then only to the first ring. they are sealed after a 3 hour warm up.
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insaecula
Stranger

Registered: 03/08/16
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Re: 55 gallon drum as pressure cooker [Re: drake89]
#23870233 - 11/26/16 07:33 PM (7 years, 2 months ago) |
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he'll, if u fill a 55 full of water at 8lbs / gallon it probably exceeds 10psi.... I mean thats roughly 440lbs in a container that is roughly 8 cubic ft, not sure what exact figures are but I'm sure from that that it'd hold at least 10 psi
-------------------- on the plains of destination lie the blackened bones of countless millions who, at the dawn of victory sat down to rest and resting died
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drake89
Mushroom Magnate



Registered: 06/26/11
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Re: 55 gallon drum as pressure cooker [Re: insaecula]
#23871545 - 11/27/16 10:14 AM (7 years, 2 months ago) |
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Quote:
insaecula said: he'll, if u fill a 55 full of water at 8lbs / gallon it probably exceeds 10psi.... I mean thats roughly 440lbs in a container that is roughly 8 cubic ft, not sure what exact figures are but I'm sure from that that it'd hold at least 10 psi
I mean you're sure no math wizard since it works out to roughly 1psi...
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Quadman
Challenged


Registered: 04/23/16
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Re: 55 gallon drum as pressure cooker [Re: drake89]
#23871914 - 11/27/16 12:29 PM (7 years, 2 months ago) |
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Rounded off for easy figuring , every foot of water is equal to 1\2 psi. If you have a drum 3' tall full of water you get approx 1.5 psi at the bottom of the drum.
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insaecula
Stranger

Registered: 03/08/16
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Re: 55 gallon drum as pressure cooker [Re: Quadman]
#23872083 - 11/27/16 01:34 PM (7 years, 2 months ago) |
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Quote:
drake89 said:
Quote:
insaecula said: he'll, if u fill a 55 full of water at 8lbs / gallon it probably exceeds 10psi.... I mean thats roughly 440lbs in a container that is roughly 8 cubic ft, not sure what exact figures are but I'm sure from that that it'd hold at least 10 psi
I mean you're sure no math wizard since it works out to roughly 1psi...
yeh, my math isn't the best after drinking a 1/5 of jack... regardless, 10 psi isn't shit . the radiator in your car will usually hold 15 before it pops the cap for the overflow which means a flimsy radiator hose will exceed that pressure. I'd bet a 55 is a little stronger than a radiator hose... also consider they don't just store filled 55's in a single layer do they? nope, they stack those things. now stacking may not increase the liquids pressure on the drum but if they are stacked even 3 high the bottom drum is supporting almost 1000 lbs on top of itself and has over 1200 lbs on the floor. yeh, I think that tin can could handle a measly 10 psi of steam. but I'd say it should have a safety blow off valve to dump pressure should it get away from you
-------------------- on the plains of destination lie the blackened bones of countless millions who, at the dawn of victory sat down to rest and resting died
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Quadman
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Re: 55 gallon drum as pressure cooker [Re: insaecula]
#23872369 - 11/27/16 03:07 PM (7 years, 2 months ago) |
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Your right stacking has nothing to do with psi. It also tells you nothing about a container being pressure safe.
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drake89
Mushroom Magnate



Registered: 06/26/11
Posts: 4,168
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Re: 55 gallon drum as pressure cooker [Re: Quadman]
#23872516 - 11/27/16 03:45 PM (7 years, 2 months ago) |
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At 10 psi the lid has about 4400 pounds behind it. I ain't standing anywhere near that. When I ran my barrels at 4 psi they popped put about a half inch on both ends. I ran them 5 nights a week for 2 years and they managed to hold.
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