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Thread: Another oil tank evaporator

  1. #1
    Join Date
    Apr 2017
    Location
    Nova scotia
    Posts
    35

    Default Another oil tank evaporator

    I started my own oil tank evaporator last week.

    I picked up some plastic spiles with buckets and lids last year, about halfway through the season, and decided for ****s and giggles I would put a few taps in, which progressed to 11 taps in the yard. I hadn't planned any for making any syrup until that point, so I had to throw together what I could to make do.
    After boiling on an old cast iron wood stove with 2 canning pots, I decided I wasn't going to wait until the last minute and fall short again.
    I don't know if it is just the fact that Canadian oil tanks are narrower than our neighbours to the south, or if I just couldn't find the right tank, but after looking at about 30 different old tanks, I chose one that the father-in-law had, which was .100 wall, rather than the others I had seen, which were about .080 wall.
    Fairly standard build for the most-part, cut the top back 4', welded in 2x2x1/8 angle around the sides. The only thing i had to really do that was special was section the tank in half, and weld in a 4" strip, to take it from 23" wide to 27" wide, so allow for a full 24" pan, and room for insulation and brick, or cement board.
    I cut out a door opening that once finished is 13 1/2" x 13 1/2", so as to give me lots of room to load the fire.
    Cut out the back section of the bottom, to lighten it up, and skinned a small ramp.
    I cut the top for the flue pipe it, welded in 1/8" plate, cut a 7" hole, and made a ring out of .100 steel. My father-in-law has some 7" stainless pipe that I will.be using, and I have a 7" insulated roof section to go with that.

    I have to pick up a little more steel, hopefully I will have that tomorrow or Friday, so next week I can finish up. I have to skin the back portion of the bottom, build an ash door opening and door, and the main door. After that, I will use stone wool insulation, either 1 1/4" or 1 1/2", whichever is easier to get for now, and then line the fire box with cement board, as a temporary covering, until next year, hopefully.
    After that, I need to line up some stainless and start my pan(s).
    Attached Images Attached Images
    2019 season - 11 taps around the yard mid-season, 2.5 gallons of syrup boiled down in canning pots on a cast ron wood stove, in a 6 x 6 homemade greenhouse
    2020 season - - 2x4 homemade oil tank arch, homemade raised flue, and syrup pans.
    62 taps on buckets, up to 88 as of March 6, 105 by March 9, and 130 March 10

  2. #2
    Join Date
    Mar 2005
    Location
    Albion PA
    Posts
    4,922

    Default

    I like it, keep moving! A good way to get this done is to go tap the trees. Then you HAVE to get it ready to boil. Not sure of your pan design, but that can suck up a bunch of time too.
    Keep boiling!
    Regards,
    Chris
    Casbohm Maple and Honey
    600 roadside taps
    3x10 King, WRU, AOF and AUF
    12" SIRO Filter Press.
    2015 Ford F250 PSD sap hauler
    One Golden named Maggie Cat named Lucy
    Too many Cub Cadets
    Ford Jubilee and several Allis WD's, and IH tractors

    www.mapleandhoney.com

  3. #3
    Join Date
    Apr 2017
    Location
    Nova scotia
    Posts
    35

    Default

    I have been beating away at things when time allows, and have finally pretty well finished up the arch build. All that is left is some sort of draft adjustment for the ash door.
    I used 1.5" rock wool insulation to insulate, and for this year I used 1/2" cement board in the fire box, high-temp
    siliconed to the insulation.
    Door is sealed with 3/8" stove door gasket. I Used 1/2" cold rod for the latch arm, and siliconed an old screwdriver handle on for comfort.
    Tomorrow the hope is to head to the wife's grandfathers shop, and get cutting some steel. I picked up 2 sheets of 22ga 304 mill finish. My plan is for a 32" flue pan, I'm going to cheat if I can by making a zigzag bottom, so.my 24" wide pan should have 52" of width, which should give me around 11gph in the back pan, the front pan will be a divided 16x24.
    20200210_194801.jpg20200210_200013.jpg20200210_195953.jpg
    Last edited by Danielb; 02-10-2020 at 06:25 PM.
    2019 season - 11 taps around the yard mid-season, 2.5 gallons of syrup boiled down in canning pots on a cast ron wood stove, in a 6 x 6 homemade greenhouse
    2020 season - - 2x4 homemade oil tank arch, homemade raised flue, and syrup pans.
    62 taps on buckets, up to 88 as of March 6, 105 by March 9, and 130 March 10

  4. #4
    Join Date
    Apr 2017
    Location
    Nova scotia
    Posts
    35

    Default

    I moved the "arch" into it's new home today. It isnt much, just a crooked old shed we have on the property, so I am really thankful for the adjustable feet I put on the legs.
    Stainless 7" stack is installed too 20200211_154149.jpg
    2019 season - 11 taps around the yard mid-season, 2.5 gallons of syrup boiled down in canning pots on a cast ron wood stove, in a 6 x 6 homemade greenhouse
    2020 season - - 2x4 homemade oil tank arch, homemade raised flue, and syrup pans.
    62 taps on buckets, up to 88 as of March 6, 105 by March 9, and 130 March 10

  5. #5
    Join Date
    Mar 2011
    Location
    Winfield, Iowa
    Posts
    378

    Default

    That's a neat looking rig! Good job! Ted

  6. #6
    Join Date
    Apr 2019
    Location
    Nashville, MI
    Posts
    158

    Default

    That is a fancy looking oil tank arch. Are you planning on placing cement board or metal on the floor to catch embers that fall out of the arch when you are feeding the fire? This should be something to consider as a precaution. don't forget a bucket of sap and a fire extinguisher.
    2004 - 2012 2x3 flat pan 25 to 60 taps
    2012 2x3 new divided pan w/draw off 55 taps
    2018 - didn't boil surgery - bought new evaporator
    2019 new SML 2x4 raised flue high output evap. 65 taps
    made 17 gal syrup
    2020 - going for 100 taps bags and buckets

  7. #7
    Join Date
    Apr 2017
    Location
    Nova scotia
    Posts
    35

    Default

    Quote Originally Posted by Pdiamond View Post
    That is a fancy looking oil tank arch. Are you planning on placing cement board or metal on the floor to catch embers that fall out of the arch when you are feeding the fire? This should be something to consider as a precaution. don't forget a bucket of sap and a fire extinguisher.
    Yes, i have some .012" stainless that i plan to lay down around the front.
    2019 season - 11 taps around the yard mid-season, 2.5 gallons of syrup boiled down in canning pots on a cast ron wood stove, in a 6 x 6 homemade greenhouse
    2020 season - - 2x4 homemade oil tank arch, homemade raised flue, and syrup pans.
    62 taps on buckets, up to 88 as of March 6, 105 by March 9, and 130 March 10

  8. #8
    Join Date
    Jan 2017
    Location
    Quaker Hill, CT
    Posts
    285

    Default

    Very nicely done. I wish my oil tank looked that nice.

    Do you plan on adding any forced draft to the firebox? You may find you need a little more heat to your fire to get the back of your rig to solid boil.

    What are your plans for pre-heating sap?
    2017 25 taps on buckets got me hooked 1 gallon of sweet
    2018 51 taps on 3/16 tubing/ DIY oil tank evaporator 8.5gallons finished
    2019 60 taps 7 gallons finished ended season short
    2020 New 2x4 divided pan ready to get away from the headache that is steam table pans

  9. #9
    Join Date
    Apr 2017
    Location
    Nova scotia
    Posts
    35

    Default

    20200212_133752.jpg
    Pan progress
    2019 season - 11 taps around the yard mid-season, 2.5 gallons of syrup boiled down in canning pots on a cast ron wood stove, in a 6 x 6 homemade greenhouse
    2020 season - - 2x4 homemade oil tank arch, homemade raised flue, and syrup pans.
    62 taps on buckets, up to 88 as of March 6, 105 by March 9, and 130 March 10

  10. #10
    Join Date
    Jan 2011
    Location
    Southern Ohio
    Posts
    964

    Default

    Daniel, while your fabricating put a channel for a drain at one end of those flues. You'll be glad you did.
    100 -110 taps
    Smokey Lakes Full pint Hybrid pan
    Modified half pint arch
    Air over fire
    All 3/16 tubing
    Southern Ohio

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