# My little "outback" "farmer" charcoal gasifier

**URL:** http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305
**Category:** Small Engines
**Created:** [July 5, 2020, 4:09am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305 "2020-07-05T04:09:32Z")
**Posts on this page:** 15
**Page:** 1

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### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken)
#### Post date: [July 5, 2020, 4:09am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/1 "2020-07-05T04:09:32Z")

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Based on my own experiences and learned on DOW , subsequential learned from the feedback during teaching around here…

This little one is kinda expressing my opinion on how i think a gasifier “should” be…

Not everybody is a genius as Wayne Keith or Garry Gilmore, or has the life experience as Steve U, nor they have the drive of so many builders around here on DOW… Seeking for perfection…

There is no bad or wrong, merely it has to suit YOUR needs, be it having fun or needing the monetary benefits…

Anyway, long story short…

Based on the KIS(F) principle ( F stands for Fire, acknowledging the work of GG, Keep It Simple Fire )

This gasifier will run “flawless” if:  
Your charcoal is A ok  
Your Filters are clean  
Your engine is OK and well maintained

It is not a “Lit and forget gasifier” , gasifiers never are…  
This little thing requires daily maintenance, but similar as a woodstove, ash bucket…

I will post some dimensional / drawings / parts / pictures and after that running it on a small genset and waterpump ( my favorit )

 ![15992](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/6/0/60ba7de052f6ca8254a7322b38928001f2caa6f8.jpeg)

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### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken)
#### Post date: [July 5, 2020, 4:15am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/2 "2020-07-05T04:15:50Z")

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also will make a 3D sketchup drawing

 ![41](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/8/7/87f290e5c36eed142664940da514313b80f24d81.png)

But i won’t spent time on making tutorial video’s or such things…

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### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken)
#### Post date: [July 5, 2020, 4:22am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/3 "2020-07-05T04:22:43Z")

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Filters i am using for this:  
1: cooky jar style

 ![15987](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/d/b/db509478ce5ae4102fafb91cff9f4fe7468e1a0a.jpeg) ![15988](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/7/c/7c33796f99f29ae16082cffba13c41ce4dd0be83.jpeg) ![15989](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/2/0/201e1531ffe440c3a3a58b5e5ce123e6b611f9a5.jpeg)  
2: option coarse foam and sticky oil  
 ![15990](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/f/6/f6846710eed865a72e803d98308046413a732519.jpeg) ![15991](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/7/4/74007123533c8af78481848f5b202426559f73fc.jpeg)

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<div class="post-metadata">

### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken)
#### Post date: [July 5, 2020, 12:45pm UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/4 "2020-07-05T12:45:02Z")

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![20191202_111645](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/a/0/a0065cf8ff8414016c52f941126582841f049ab4.jpeg) ![20191231_164205](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/8/2/8206a0ed6835f81df2386264e21879cd0a1caaf1.jpeg) ![20191231_164217](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/f/8/f8139428d272b9518f2519cac9fdea41e0f9c1df.jpeg) ![20191231_164230](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/5/7/57be5028449fea56e37215e45f03ab006d79ef8b.jpeg) ![20191231_164235](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/d/4/d489df783821f0d3f69258fdd816dc52039aca84.jpeg) ![20191231_164245](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/0/f/0f83450d102e4bd65722dfb86e353129b4cad6c8.jpeg) ![20191231_164318](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/c/3/c37cd8384cf630054939dfb59d8e7e2788988ee2.jpeg)

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### Author: ![Pelletpower](https://avatars.discourse-cdn.com/v2/letter/p/53a042/32.png) [@Pelletpower](http://forum.driveonwood.com/u/Pelletpower)
#### Post date: [July 5, 2020, 6:14pm UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/5 "2020-07-05T18:14:01Z")

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Wow! That surprises me! Is that the gasifier you are building? You are always using a lot of PVC. Is that tower high enough to cool the gases and not meld the pvc?  
Thanks for the pictures, that makes things clear.

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### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken)
#### Post date: [July 6, 2020, 5:26am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/6 "2020-07-06T05:26:55Z")

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Type and size of fuel i use for it, can be any other source as well

 ![44](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/9/8/984c2aecb819fff3ce5d96d5c23eb634e6575adf.jpeg) ![20170430_165430](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/1/6/163a25a43c5dba58dc8ff5aed90f928475d35738.jpeg) ![sieb](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/7/6/76b49d26f281b8385f01f7643d740e1989a1746d.jpeg)

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### Author: ![Vinod](https://avatars.discourse-cdn.com/v2/letter/v/bbce88/32.png) [@Vinod](http://forum.driveonwood.com/u/Vinod)
#### Post date: [February 28, 2021, 11:23am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/7 "2021-02-28T11:23:20Z")

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Hi Koen  
Pl. send length diameter, height of nozzles, nozzle size and charcoal size, filtration system  
Etc information of your farmer gasifier

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### Author: ![Vinod](https://avatars.discourse-cdn.com/v2/letter/v/bbce88/32.png) [@Vinod](http://forum.driveonwood.com/u/Vinod)
#### Post date: [February 28, 2021, 11:31am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/8 "2021-02-28T11:31:57Z")

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Also send the charcoal making process for your biochar as your biochar making process is sound for here farm residue which is technical non useful for other gasifier due density and thickness

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### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken)
#### Post date: [February 28, 2021, 1:26pm UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/9 "2021-02-28T13:26:01Z")

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Somehow i am getting forgetful…

Diameter pipe 5"  
Length 4 to 5 Ft  
Nozzle is reduction (weld) small is 1/2" to 1"  
Height from bottom to nozzle = 4"  
The nozzle protrude about 1" inwards the pipe

The minimum level i use is about 2 Ft above the nozzle  
The gasifier is connected to the engine frame for vibration

This gasifier is left to cool , then tipped over for cleanout and refilled with new dry charcoal.  
The old charcoal sieved out after drying.  
I prefer to start each load with the bottom half new fresh ( works for me )

Size charcoal: biggest pieces pass 1/2"screen. Smallest are larger then 1/8"

The way i make charcoal, retort style: the center pipe stops emitting smoke (smokeless charcoal )

[![](https://i.ytimg.com/vi/dqQRdQDTJNM/hqdefault.jpg "First set of tests Charcoal making in retort, part 1. Thailand, Nong Khai, Pho Tak, Dan Si Suk") ](https://www.youtube.com/watch?v=dqQRdQDTJNM)

Also: since my nozzle is outside bigger then nozzle tip, it extracts the heat from the tip to the outside, hence protecting the nozzle from overheating.  
Also notice the extra welding where it connects with the reactor pipe.

 ![Screen Shot 2021-02-28 at 20.32.19](https://dow.nyc3.cdn.digitaloceanspaces.com/original/3X/2/e/2e28e2b46f44a9ffd54459239b463a8c2addf6f9.jpeg)

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<div class="post-metadata">

### Author: ![Vinod](https://avatars.discourse-cdn.com/v2/letter/v/bbce88/32.png) [@Vinod](http://forum.driveonwood.com/u/Vinod)
#### Post date: [February 28, 2021, 1:38pm UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/10 "2021-02-28T13:38:34Z")

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Thanks Koen ,  
For sharing your experience  
Vinod

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### Author: ![Vinod](https://avatars.discourse-cdn.com/v2/letter/v/bbce88/32.png) [@Vinod](http://forum.driveonwood.com/u/Vinod)
#### Post date: [February 28, 2021, 1:42pm UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/11 "2021-02-28T13:42:18Z")

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Hi Koen,  
Just sack of information but have tried other farm residue like stems of cotton plant millet wheat and sorghum stem for making char and used in your farmer gasifier

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### Author: ![tcholton717](https://avatars.discourse-cdn.com/v2/letter/t/b9e5f3/32.png) [@tcholton717](http://forum.driveonwood.com/u/tcholton717)
#### Post date: [May 2, 2021, 11:11am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/12 "2021-05-02T11:11:58Z")

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Don’t know how I missed this before. Any further updates? Any added H2O?

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### Author: ![trigaux](https://avatars.discourse-cdn.com/v2/letter/t/34f0e0/32.png) [@trigaux](http://forum.driveonwood.com/u/trigaux)
#### Post date: [May 5, 2021, 11:55pm UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/13 "2021-05-05T23:55:20Z")

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Hi Koen,  
where do you find these beautiful little buzzards. Do you have an online address to refer to us?  
Thierry

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<div class="post-metadata">

### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken)
#### Post date: [May 6, 2021, 3:40am UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/14 "2021-05-06T03:40:54Z")

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Hi Thierry,

They are called “concentric welding reducers” or “Butt-weld concentric reducers”

I find them local or also can order online, you might find them easy nearby if you use the google search

> **[welding concentric reducer - ซื้อ welding concentric reducer ราคาดีที่สุดค่ะ...](https://www.lazada.co.th/catalog/?q=welding%2Bconcentric%2Breducer&_keyori=ss&from=input&spm=a2o4m.searchlist.search.go.5e0f4126GBZaxt)**
>
> welding concentric reducer Thailand - เลือกซื้อสินค้าได้ดีที่สุด welding concentric reducer ออนไลน์ได้ที่ www.lazada.co.th

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<div class="post-metadata">

### Author: ![plataoplomo](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/plataoplomo/32/29028_2.png) [@plataoplomo](http://forum.driveonwood.com/u/plataoplomo)
#### Post date: [May 6, 2021, 11:06pm UTC](http://forum.driveonwood.com/t/my-little-outback-farmer-charcoal-gasifier/5305/15 "2021-05-06T23:06:55Z")

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Maraming Salamat Po for the Lazada link.
