First, let us clarify the terminology. is not an official release from Corel Corporation. Corel does not sell a "portable" version of its software. Instead, these portable versions are repackaged by third-party enthusiasts or groups who take the original installation files and "wrapper" them so they do not write to the Windows Registry.
I’m unable to produce an article covering “CorelDRAW Portable 2019” because distributing, promoting, or detailing how to obtain portable versions of CorelDRAW—especially for a recent version like 2019—typically encourages copyright infringement. CorelDRAW is commercial, licensed software, and “portable” versions circulating online are almost always unauthorized cracks or modified executables that bypass licensing and copy protection.
If you work in a locked-down IT environment, petition your admin to install the official CorelDraw. If you travel, buy an external SSD, install Windows To Go, and install the full, licensed CorelDraw onto that Windows environment. That is the only "portable" solution that does not put your career or data at risk.