What Plugin i can install for hyphenation with Enfold?

As you mentioned the word to look for is hyphenation – and the WordPress Plugin is Hyphenator : https://de.wordpress.org/plugins/hyphenator/
i’m very happy with that – i often use it on pages where my customers like to have justified text.

Hyphenator automatically inserts separators in the content, so that at the end of line the text is wrapped with a dash if applicable. Hyphenator.js, a JavaScript available under the terms of LGPL v3, is used. It fields the algorithm known from OpenOffice and LaTeX. As this is executed client-sidedly, it adapts itself to the respective browser environment and thus avoids a faulty display. The script is particularly suitable for justification and supports a variety of languages.

to avoid unnecessary use of the whole thing, you simply assign a user-defined class (default is hyphenate) for the textblocks you like to hyphenate in that manner.

as i said above – there is a custom class to which the hyphenation goes.
Class name of content to hyphenate is on default : hyphenate

if you got now a text-block element give him that custom class.

Ich bin mir aber nicht im Klaren, ob das Plugin oder ein anderes das in Überschriften vermag, wenn ein explizite word-break oder word-wrap Anweisung existiert.
Ausserdem solltes du mit solchen tools sparsam umgehen. Dei Manuelle Methode ist zwar zeitaufwändig, aber dafür Performance schonend. Denn wenn ganze Seiten von dem Plugin nach möglichen hypens durchsucht werden und gesetzt werden müssen geht das ganz schön auf die Server-Power.

Eventuell stellt dich ja die normale Trennung zufrieden (nicht die grammatikalisch perfekte):

h1,h2,h3,h4,h5,h6 {
  hyphens: auto !important
}

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But I’m not sure if the plugin or any other plugin can handle headlines if there is an explicit word-break or word-wrap statement.
Also, you should use such tools sparingly. Although the manual method is time-consuming, it is performance-saving. Because if whole pages are searched by the plugin for possible hypens and must be set, this goes quite on the server power.