On this day in 1949 Phillip M. Arnold was granted the patent for TREATMENT OF HYDROCARBONS. U.S. Patent No. 2,483,869.
This invention relates to a process for removing ethylene from admixture with other low boiling gases. In one of its more specific aspects this invention relates to a process for separation of ethylene from admixture with such gases as hydrogen, methane and other hydrocarbons higher boiling than ethylene. An object of this invention is to devise a process for the separation of ethylene from admixture with methane. Another object of my invention is to devise a process for separating ethylene from admixture with methane and hydrocarbons higher boiling than ethylene. Still another object of my invention is to devise a process for the separation of ethylene from admixture with hydrogen, methane and normally gaseous hydrocarbons higher boiling than ethylene. Yet another object of my invention is to provide a process for the separation of relatively low boiling hydrocarbon from admixture with one or more constituents in the gaseous state without the use of a closed methane refrigeration cycle. A further and important object is the separation of ethylene from hydrogen-methane mixtures containing ethylene by fractionation wherein a liquid methane reflux is obtained without the necessity of a closed methane refrigeration cycle.
