Technology

The technology we use

The technology partner of PDI a.s. is affiliate company Millenium Technologies a.s., which possesses the "know how" for all technology solutions related to plasma gasification and vitrification.

https://www.millenium-technologies.cz

Plasma gasification

This technology is the ideal solution for converting waste into materials or energy. The high temperatures at which waste is gasified not only guarantee the safe conversion of the organic part of the waste into synthesis gas and the disposal of all organic pollutants, but also guarantee the vitrification of the inorganic part of the waste, where heavy metals may be present. Plasma gasification creates synthesis gas, which can be used to generate electricity and heat in a combined cycle, or can serve as a raw material to produce hydrogen, methanol or ammonia. During the process, the inorganic part of the waste is melted down and leaves the reactor as liquid slag which, after solidifying in a water bath, safely locks away hazardous materials such as heavy metals. Because it does not leach, the resulting slag is certifiable as construction material.

The technology gasifies waste at temperatures ranging from 1,250 °C to 1,600 °C created by plasma burners during the gasification process.

Pyroplasma

This technological process combines rotation pyrolysis with plasma gasification, combining the proven robustness of a fuel preparation system with the advantages of gasifying material at high temperatures. A major factor is economic viability, where investment and operating costs are just 60% of the costs for grate incinerators and other ZEVO technologies. This not only makes operations more efficient, but also lowers waste management costs for municipalities.

This unique solution uses the thermal energy of the synthesis gas created from plasma gasification for pyrolysis, which makes the entire process of recovering energy from waste more efficient.

Hydrogen production

Worldwide, hydrogen production is mostly associated with the use of fossil fuels. Globally, less than 5% of hydrogen is produced through electrolysis technology. This is the main reason why hydrogen technologies are not currently making a greater contribution to air and climate protection. The problem lies mainly in WGS (water-gas shift reaction) technology, which emits significant amounts of CO2 into the atmosphere when producing hydrogen.

Thanks to the energy of plasma created by "transfer-arc" plasmatrons in a reactor, plastics are melted down in the absence of oxygen and converted into a stream of hydrogen and solid carbon black. After the carbon black is separated from the hydrogen by electrostatic precipitators, the hydrogen is then sent for subsequent purification and compression. The carbon black is also processed into a final product.

This manner of production makes it possible to obtain hydrogen that is pure enough to be used in fuel cells. Carbon black, which is separated from the hydrogen by electrostatic precipitators, can be further processed to produce sorbents. Another possible use is to produce carbon materials like nanofibers. Using plasma gasification to process waste and subsequently produce hydrogen or other raw materials from synthesis gas is the right way to upcycle waste materials and fully fits in with the EU's plans for a circular economy.

The plasma gasification of plastics in an oxygen-free environment makes it possible to produce hydrogen without CO2 emissions, resulting in "blue hydrogen ".