If you’re looking to live off the grid and want a reliable source of power and heat, you might want to consider building a wood-powered gasifier stove.
This amazing stove not only produces heat for your home but can also generate gasoline to run your generator, heat hot water, and power your propane hot water heater.
With this stove, you can live completely off the grid without having to rely on traditional sources of energy.
To build this stove, you’ll need some basic materials such as steel pipes, canisters, and copper coils. You’ll also need some tools like a welder, a saw, and a drill.
The construction of the stove involves building a firebox with a gasification-style system, a secondary burn system, a venturi system, a syngas production system, and a reactor.
The gasification-style system is used to produce syngas that can be used to power a generator, while the secondary burn system ensures that the burn is efficient and smoke-free.
The venturi system helps to mix air with the smoke to ensure complete combustion, and the syngas production system collects bio-crude oil, which can be refined to produce high-grade fuel for engines.
Finally, the reactor helps to create a downhill pipe that forces smoke to release crude oil and other heavy hydrocarbons.
STEP 1 : THE FIREBOX
The gasification-style system inside the firebox of this wood stove is a key feature that sets it apart from traditional wood stoves.
With this system, not only can the stove be used to heat a home in a typical manner, but it also has the capability to produce syngas that can be used to power a generator.
This is achieved by reversing the gasification process through a fan and draw system that is installed underneath the stove.
By shutting off the flow out of the chimney pipe and drawing down underneath the stove, syngas is produced and can be directed outside to power a generator.
To make it easy to access and work with the material inside the gasification chamber, a latch-up mechanism has been incorporated at the top of the system.
This latch can be pulled out to open the chamber and rotate it, which locks it in place. At the bottom of the chamber, there is a dump plate that allows for the ash and unburned coal to be easily removed from the system and deposited into a tray below.
STEP 2 : THE SECONDARY BURN SYSTEM
The secondary burn system plays a critical role in ensuring efficient combustion and minimizing harmful emissions. It comprises two layers of stove pipes, one smaller inner diameter pipe and a larger one.
The outer sleeve is designed to stop below the bottom to allow air to travel up in between and rise up to the pipe.
The fresh air inlets in the chamber ensure that the combustion process is supplied with adequate oxygen to produce a swirl that enhances the burning of any leftover syngas in the production system.
This process leads to complete combustion of the wood, and as a result, no smoke comes out of the stove.
The set of burner holes further ensure that there is complete mixing of the oxygen with the syngas, leading to better burn and more heat generation.
STEP 3 : VENTURI SYSTEM
The inner chamber of the woodstove is where the materials are heated, and as they do, an airdrop is created between the outer and inner walls.
This airdrop emerges through the holes and mixes fresh oxygen with the smoke, resulting in a clean burn.
Meanwhile, the bottom holes let air in from the bottom to complete the combustion process as the materials burn down to the bottom.
The design of the woodstove also includes a venturi system, where air is drawn up the walls toward the holes, creating a vacuum effect at the bottom and pulling some of the smoke down into the system.
This helps mix the smoke with the air and swirl it, ensuring a clean burn.
The single air inlet hole is used to pull the smoke out of the bottom to reverse this process to put syngas out of this stove outside into a generator.
To reverse this process and extract the syngas produced by the woodstove, a single air inlet hole is used to pull the smoke out of the bottom. This syngas can then be used outside in a generator.
In addition to the secondary burn system, the wood stove also features an inner set of holes located at the bottom of the stove pipe.
These holes serve to mix air between the walls of the pipe, ensuring that any remaining smoke is completely burned before being released.
The inner pipe of the stove pipe is designed to be longer than the outer pipe, creating a space for air to be drawn up and mixed with the smoke.
This allows for a more complete burn and ensures that no smoke is released from the pipe. The air drawn up between the walls of the pipe is mixed with the smoke to create a swirl that burns cleanly.
STEP 4: SYN GAS PRODUCTION
In this step, the focus is on the bio-crude oil production system which essentially refers to the creosote produced during syngas production or gasification production.
The system consists of a single pipe that connects to a creosote collection container located at the back of the stove.
As the gas produced in the stove cools down, it moves towards the top of the container and works its way uphill.
During this process, the hydrogen gas, being the lightest, travels upward and easily passes over the top, causing most of the creosote to drip down into a second collection container located below.
The remaining gas then travels through a pipe and goes down to a condenser. The condenser cools down the gas further, causing the remaining liquid to condense and separate from the gas.
This process separates the bio-crude oil from the gas.
STEP 5 : THE REACTOR
This particular reactor is made using two steel cans, both of which have a capacity of five gallons. One can has the top cut off, while the other has the bottom cut off.
These two cans are then joined together by sliding one over the other to create a tight seal. A one-inch pipe is welded into the back of the can using an elbow joint.
This pipe is used to facilitate the flow of gas through the reactor.
STEP 6 : CRESOTE COLLECTION
The pipe attached to the reactor serves an important purpose in the bio-crude oil production process. The pipe is inclined in a downward slope, which creates a force that encourages the smoke to release as much of the crude as possible.
Because the smoke naturally wants to travel uphill, it would otherwise be too hot to cool quickly. However, by creating a slight downhill force, we force much of the heat energy out and make sure that the creosote, or bio-crude, is released. The creosote then rolls down the bottom of the pipe and is collected in a container.
After the gas passes through the gasifier and the creosote collection container, it enters the next stage of the process where it moves through a reduction point.
This reduction point is essential as it reduces the pressure of the gas, allowing it to be refined and reduced slightly in volume as it moves through the system.
The reduction point also causes a separation of the gas components based on their weight, with lighter gases such as hydrogen and carbon monoxide easily flowing up the pipe through thermodynamic pressure.
At this stage, the gas has been cooled significantly due to the downhill run, causing the release of as much creosote or biocrude as possible.
The gas then moves uphill again through the system, which is where the heavy hydrocarbons and other elements inside of it begin to focus on the hydrogen gas and carbon monoxide.
This uphill movement of the gas through the system helps to force the heavy hydrocarbons and other elements towards the hydrogen and carbon monoxide, which are the desired components for biofuel production.
The downhill pipe is a critical component in this system, as it runs counter to the natural thermodynamic flow of the gases.
This design choice is intentional because it helps to condense and precipitate out the oils much more rapidly than if the pipe were following the natural flow.
As the gas moves down the pipe, it cools, causing heavier and thicker crude oil to separate from the gas and collect in the first catch container.
The oil that collects here is the heaviest and thickest of the crude, and it will require further refining to be usable.
The lighter components of the gas will continue moving through the pipe and will be collected in subsequent catch containers as they condense out.
After passing through the reduction point, the gas flows down the downhill pipe into the secondary catch, where the heavier crude oils are caught.
Then it travels uphill and some of the lighter gases that haven’t yet condensed are released.
As they rise, they lose a lot of energy and become restricted into a quarter-inch copper gas pipe. This pipe leads into a 5-gallon water tank that contains a 20-loop condenser coil.
The hot gas passes through the coil, which is surrounded by cold water, causing the gas to cool rapidly and condense into a liquid state.
The condensed liquid then drips down and collects in the tank, while the remaining gas continues its journey through the system.
From the water tank with the 20 loop condenser coil inside, the pipe runs into a one-gallon pickle jar. It is essential not to put the pipe down too far into the jar because you don’t want to cause any bubbling.
As the jar starts to fill with crude oil, you just want to capture the lightest gases, such as hydrogen, nitrogen, carbon monoxide, and others that are still left in the system, by pulling them off from the top of the jar.
After the gas exits the pickle jar, it travels up the pipe and goes through a T-joint. At this point, there is another secondary condenser consisting of about four or five loops.
As the gas flows through this condenser, more of the remaining liquid will condense and be collected in a container.
This container will capture the liquid that has condensed from the gas. Meanwhile, the lighter smoke will continue on down the pipe.
The bio-crude oil project has successfully collected four grades of oil from the gasification process. These oils have different properties and uses, and the next step is to refine them into usable fuels.
So in the end, what we’ll have is all the liquid being produced the crude oil once again, flow back to the woodstove go through the refinery out the refinery tower, and on the other side, we’ll have a high-grade fuel to use in any engine.
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