ANSWER:

This is not permissible. 

You must pray on time and can pray anywhere in an empty room by taking a 5 min bathroom break.

QUESTION: I am a muslim women who works at a hospital, i only get an half an hour break for lunch break around 12.30pm, and sometimes i have to work till 6 or i am travelling back home during asr or maghrib time, is it permissible to combine my prayers