Our Pyrolysis – Plant “Bio-Alternative” (BA)

Pyrolysis GmbH has developed recycling plant to treat organic waste from local farms, as well as from the municipality and local farmers. The resulting products are biochar, pyrolysis oil and gas.

© Copyright: Our Pyrolysis System “Bio-Alternative 1 ” (BA1):

• Height: / length: 7m and 120m2

• Officially audited and approved by the Swiss federal and cantonal governments. This process resulted in Swiss and EU approval for operation license.

• Functional principle Pyrolysis. It is a system of type BA1: Fixed-bed countercurrent gasifier, ascending gasification.

• Combustion chamber capacity: approx. 100 kg/h. Throughput of biomass 1 ton of plant coal for 3 tons of raw material.

• Our pyrolysis system and the construction of the machine is protected by international copyright.

• Reproduction of the machine adapted to individual needs is possible.

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Characteristics of our Bio-Alternative Process:

It can process various types of waste (grains of various grades, including fine material, wood waste, nuts and rice husks, sugar cane or other types of biomass). It is also suitable to treat sewage sludge and waste accepted for recycling by current legislation. The process can be thought of as: organic waste in, bio-carbon out.

In our carbonization plant (550°C), with the addition of controlled air flux, the biomass is separated into solid residue, pyrolysis oil and gas. The process is primarily designed for coal production; thus, the aim is to incorporate as much as possible of the energy content of the waste in the solid fraction in coal form. By-products are pyrolysis oil and a small fraction of biogas. While the biogas should be used immediately and has a low-energy content, the coal and the oil are available as storable energy carriers. The proportions of coal, oil and gas depend, on the one hand, on the composition of the starting materials and, on the other hand, they can be controlled within certain limits by the reaction conditions (temperature, air volume, throughput). The energy content is distributed approximately as follows:

• Solid fraction (biochar) 50%
• Pyrolysis oil: 10%
• Gas: 30%
• Loses: 10 %

For unpolluted waste the biochar can be processed with a briquetting equipment to form grill charcoal or – without further processing – it can be used as an absorbent material (activated carbon).

The biogas can be used in thermal combustion plants or for generating power in combustion motors. The cooled gas is cleaned by means of three filters (paper / oil filter) after the condensate has been separated in the “Zyklon” condenser part.

The oil can be used in a burner to generate heat. But both the gas and the oil may be used for generating electricity in turbines.

The countercurrent method used in our plant yields a raw gas with a high proportion of high-quality compounds. Since no complete gasification is attempted and, therefore, no high water-vapor content is required to support “cracking”, the process is carried out with very dry material (8-20% ATRO). For drying the starting material, waste heat or part of the energy of the biogas and pyrolysis oil is used. Because the process is conducted with a low water vapor content, the amount of condensed water is low. At the same time, the energetic value of the condensed oil is high so that it can also be used for energy storage. The pyrolysis oil has an energetic value of about 23 MJ / kg, which corresponds to about half the energetic content of heating standart oil.

Our facility is designed to be used in third world countries or emerging countries. Therefore, it is built using simple techniques, it is inexpensive, silent and is absolutely reliable.

Conclusion:

Our Pyrolysis process allows the separation of the starting organic waste materials into the three fractions: (1) coal, (2) oil (storable energy carriers) and (3) gas (not storable). The plant is designed predominantly for coal production, thus about 50% of the energy is incorporated into coal. But the exact distribution of the end products can be influenced by the actual reaction process. The coal fraction can be easily reduced to 30%. Since the moisture content of the starting material is low (8-20% ATRO) and since the gas has a high proportion of high-temperature boiling compounds due to the countercurrent techniques used in our process. A liquid byproduct, which is rich in water and energy content condenses and can be used as an energy carrier. The process also yields wastewater-free gas which can be used in combustion engines.

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