Is there any Open Babel binary package ready to be installed with DNF/YUM on CentOS systems?

The answer is no.

"dnf search" command returns no matches:

fyicenter$ yum search babel 
  
=================================================== Name Exactly Matched: babel 
babel.noarch : Tools for internationalizing Python applications

================================================== Name & Summary Matched: babel 
libbabeltrace.i686 : Common Trace Format Babel Tower
libbabeltrace.x86_64 : Common Trace Format Babel Tower
texlive-babel-english.noarch : Babel support for English

======================================================= Name Matched: babel 
python2-babel.noarch : Library for internationalizing Python applications
python3-babel.noarch : Library for internationalizing Python applications
texlive-babel.noarch : Multilingual support for Plain TeX or LaTeX
texlive-babelbib.noarch : Multilingual bibliographies

So you need to find another way to install Open Babel on CentOS systems.

⇒ Search Open Babel RPM Packages for CentOS

⇐ Open Babel Installation Options on CentOS

⇑ Running Open Babel on CentOS

⇑⇑ Open Babel Tutorials