Greating the domain of spray system

Neser

My system is spraying a liquid throuh a nozzle or atomizer in a vessel in which the the spray droplets will be in direct contact with a hot air. This is to evaporate the water in this liquid.

The inlet fluid type before the atomizer is liquid however it is a droplets after it i.e in the vessel. Therefore, shall I incluid a particle list in my domain or not.

Can I great two domains, one for the atomizer and the other for the vessel?. How can I creat two domains for one solid object