Carbo­ni­sa­tion – the conver­sion of natural mate­rial to biochar, feeding char or activated carbon – is a process that has been known for many centu­ries. However, only the PYREG process allows the precise control of the para­me­ters, so that carbon products can be produced in various quality grades and nutri­ents can be recy­cled gently. Effi­cient, envi­ron­ment­ally friendly and without harmful by-products: You can rely on us – we are the world market leader.


In principle, the carbo­ni­sa­tion in the PYREG process is as follows (similar to pyro­lysis). The dried feed mate­rial (at least 65% dry matter content) is fed through the 500-700 °C hot PYREG reac­tors. There, the mate­rial is not burned, but first degassed gently and then carbo­nised by the addi­tion of specific air. The mate­rial is thus comple­tely hygie­nised.


Since the combus­tible gases produced in the reac­tors are comple­tely combusted in a down­stream combus­tion chamber in the FLOX process (flameless oxida­tion) at around 1,000 °C, the process produces little thermal NOx. This also means that there are no problem subs­tances such as oils or tars, since the carbo­ni­sa­tion gas is not cooled but ther­mally oxidized in the afterburner chamber.

In an optional down­stream exhaust gas puri­fi­ca­tion stage, the acidic harmful gases are removed from the exhaust gas in an alka­line flue gas scrubber and vola­tile sewage sludge compon­ents such as mercury are adsorbed onto an activated carbon filter.


Carbo­ni­sa­tion is also auto­thermal, which means that only some external star­ting energy is required. Subse­quently, only the energy contained in the sewage sludge is used to main­tain the process. In addi­tion, up to 150 kWth or 600 kWth of excess heat energy can be used for sludge drying.

The PYREG System Movie


A PYREG system is extre­mely cost-effec­tive and guaran­tees maximum flexi­bi­lity. Only a small amount of initial energy is required to operate the compact system. Once the process has started, the PYREG system produces its own opera­ting heat. In addi­tion, further energy contin­gents are avail­able and can be used for drying or other peri­pheral uses.


Reduc­tion of trans­port costs (more than 80%) through decen­tra­lised recy­cling.

Reduced space requi­re­ments and hand­ling costs.

Reduced admi­nis­tra­tion effort etc.

In-house instead of external exploi­ta­tion: Plan­ning secu­rity through decou­pling from market price deve­lop­ments.

Reve­nues from the marke­ting of carbon products.

Marke­ting of the surplus rege­ne­ra­tive energy.

Avoid­ance of other­wise necessary alter­na­tive invest­ments.

Long-term disposal secu­rity even with stricter limit values and envi­ron­mental protec­tion regu­la­tions.