No. Emulators do not have a real recovery partition. Flashing should be done on physical hardware only.
Developers use emulators to ensure their apps are "backward compatible" with older versions of Android (like 4.0 Ice Cream Sandwich or 4.3 Jelly Bean). Samsung S3 Emulator
as dedicated emulators because they are cheap (often under $20) and have great screens Emulation Power : A standard S3 can easily handle NES, SNES, and Genesis. Overclocking and Genesis. Overclocking