If portability is your real need, try these :
You cannot install service packs or hotfixes for Plant 3D 2014. Known bugs (like annotation scale issues or spec sheet crashes) will remain forever. Download AutoCAD Plant 3D 2014 Portable 32 Bit
Search for "AutoCAD Plant 3D 2014 portable 32 bit" on torrent sites like 1337x, The Pirate Bay, or RuTracker. Look for uploads with high seed counts and comments. If portability is your real need, try these
Looking at AutoCAD Plant 3D 2014 – 32-bit “Portable” Version (Legacy Software) Look for uploads with high seed counts and comments
AutoCAD Plant 3D 2014 is a specialized application built on the AutoCAD platform. It is designed for:
A version typically refers to software that can run from a USB drive without a standard installation. However, it is critical to note: System requirements for AutoCAD Plant 3D 2014 - Autodesk