Complex sentence: A Vapor horn is a device used primarily for two-phase (liquid/vapor) inlets of petroleum refinery fractionators, which is designed to provide both bulk phase separation of the vapor and liquid, and to provide initial distribution of the feed vapor.
Split into simpler sentences: A Vapor horn is a device used primarily for two-phase (liquid/vapor) inlets of petroleum refinery fractionators. These devices are designed to provide both bulk phase separation of the vapor and liquid, and to provide initial distribution of the feed vapor.