What component in a dry dynamic precipitator is the particle laden gas stream driven against before being deposited into a hopper?

In a dry dynamic precipitator, the component that the particle-laden gas stream is driven against before the particulates are deposited into a hopper is the plate. The plates create an electrostatic field that causes the charged particles in the gas stream to be attracted to the surfaces of the plates, allowing for their removal from the gas stream. Once the particles adhere to the plates, they eventually fall into the hopper due to gravity, facilitating the removal of contaminants from the exhaust gas.

In this context, the fan blades are primarily responsible for moving the gas through the system but do not directly facilitate the deposition of particles. A cyclone separates particles from the gas through centrifugal force but is not typically a component of a dry dynamic precipitator designed for the specific purpose of particle collection and deposition as described. Therefore, the exemplary function of the plates is key to understanding how particle separation occurs in this type of technology.