DIY pyrolysis ovens

Owners of their own houses and summer cottages usually have to independently resolve issues related to the heating system. You have to choose between different types of energy, taking into account all the costs and cost of maintenance in the future. Currently, the pyrolysis oven has become increasingly popular among home owners. This stove runs on solid fuel and can easily become an alternative to gas heating due to its efficiency. The stove can be heated not only with firewood and wood products, but also with household waste.

How to make a pyrolysis oven yourself

This heating system can be brick - it is usually stationary, or metal - mobile. If you wish, you can make a pyrolysis furnace yourself; for this you need to purchase the necessary tools for the work and high-quality materials, and draw a detailed drawing. Be sure to follow the parameters of the heated room.

Tools for work

To carry out independent work, you need to prepare the following tools:

• electric welding machine, electrodes;
• grinder with discs;
• drill bits for metal;
• building level, hammer, measuring tapes, chalk for measurements.

An important point is that the purchase of materials must be done after drawing up the drawings.

Necessary materials

For a metal stove you will need the following materials:

• sheet steel up to 4 mm. Up to approximately 8 m2.;
• fireproof brick 15 pieces;
• pipes of rectangular and round cross-section, with a diameter of up to 120 mm. – for a chimney, and with a diameter of up to 60 mm (8 m);
• metal fittings with a cross-section up to 9 mm;
• steel corner 4x50 mm;
• temperature sensor and fan;
• two doors.

Before starting work, you need to cut metal blanks, select and prepare a place in the house for installing the stove:

• lay a foundation of bricks on the floor; it should be slightly larger than the future stove;
• installation must be carried out at a distance of 1 meter from the wall;
• the floor around the heating device within a radius of 1.2 meters must be insulated with a fire-resistant coating made of iron sheet.

Interesting! The combustion temperature of gas in a pyrolysis furnace reaches 1000C.

How to make a pyrolysis oven with your own hands: step-by-step instructions

The assembly of a metal structure is carried out in stages:

1. The frame is made by welding the metal elements of the racks together. Up to 1 m in height, the width is the size of the oven.
2. The inner walls are installed on the brick base along the entire length and welded, and a compartment for ash is placed on the bottom.
3. The main parts are welded: the afterburner with the base and with the combustion chamber.
4. Stiffening ribs are attached.
5. Cut out the firebox window.
6. The system is connected to supply air to the stove.
7. Install the top plate and outer walls.
8. A steel water jacket and water tanks are installed.
9. Water pipes (as a set) - heat exchanger, are welded into a flow circuit with a significant external surface to deliver the greatest heat transfer to the coolant.
10. Install a fan in the pipe.
11. Cleaned (pre-calcined) sand is poured between the inner and outer walls. It will accumulate heat and also protect against overheating and burnout.
12. The doors are attached and sealed. A collector with water is connected to the circuits.

Assembling a brick stove is carried out in the following order:

1. Prepare the materials - ordinary brick 400 pieces, fireclay brick up to 100 pieces (for the heat exchanger) and a mortar of: 8 parts sand, 1 part water and 4 parts clay.
2. The solution is made in advance: the clay is mixed with water until it becomes sour cream and left overnight. Next, the solution is passed through a sieve and sand is added.
3. A heat exchanger consisting of two chambers is created from brick.
4. The grates are attached in a loose, light position, since they will expand when heated.
5. Place a fan, chamber doors, and valves.

Important! A pyrolysis furnace requires dry fuel with a humidity of up to 20%, then the heat transfer effect will be maximum. With increased fuel humidity up to 50%, the furnace performance indicator is reduced by 2 times.