Pressure loss generating device and use of the pressure loss generating device

A method for the production and/or treatment of particles in an oscillating process gas stream in a reactor system, the reactor system comprising a pressure loss production device, the pressure loss production device having a process gas inflow that has a process gas inflow inlet, a process gas inflow outlet, a process gas inflow longitudinal center axis, and a process gas inflow cross-sectional surface, having a process gas distributor that has a process gas distributor longitudinal center axis, a process gas distributor cross-sectional surface, a process gas distributor inlet arranged on a first end face and a process gas distributor outlet arranged on a second end face, and having a process gas outflow that comprises a process gas outflow inlet, a process gas outflow outlet, a process gas outflow longitudinal center axis, and a process gas outflow cross-sectional surface, wherein the process gas inflow is connected with the first end face of the process gas distributor, and the second end face of the process gas distributor is connected with the process gas outflow, in such a manner that a continuous flow path is formed wherein the process gas inflow and process gas outflow are arranged, relative to one another, in such a manner that the process gas inflow longitudinal center axis and the process gas outflow longitudinal center axis are arranged offset from one another, and wherein the process gas inflow cross-sectional surface is greater than the process gas outflow cross-sectional surface, the method comprising:

• passing the process gas stream through the process gas inflow of the pressure loss production device.