Abstract: The invention relates to a method for the drying and removal of hydrocarbons from gases.It is the object of the invention to increase the absorption ability of the solvent for aromatic hydrocarbons including naphthalene and water, to save material and energy, to lower the investment- and operating costs, as well as to avoid operational disturbances and to increase the safety during gas treatment, gas transmittance and gas distribution. This object is accomplished by the invention in that a mixture of glycol, N-methyl-.epsilon.-caprolactam and water is used as solvent. The mixture comprises 79.9 to 97 percent by weight of glycol, 2 to 20 percent by weight of N-methyl-.epsilon.-caprolactam and 0.1 to 1 percent by weight of water. The regeneration temperature of the charged solvent mixture is 150.degree. to 190.degree. C., preferably 170.degree. C. 3 to 15 percent by weight, preferably 10 percent by weight, of crude benzene is added to the charged solvent mixture.

Abstract: A method of processing technical gases such as natural or synthetic gases containing water vapor, acidic and neutral sulfur compounds and/or higher hydrocarbons which comprises treating said gas with an anhydrous solvent containing N-methyl-.epsilon.-caprolactam, an alkanolamine and a glycol to simultaneously remove said sulfur compounds, hydrocarbons and water vapor.

Abstract: A zeolite of type 5A, which has been used to separate normal paraffins from a hydrocarbon mixture containing normal paraffins by bringing the hydrocarbon mixture into contact with the zeolite whereby the zeolite absorbs the normal paraffins and then desorbing the normal paraffins from the zeolite by contacting the zeolite with water-containing ammonia vapour, is reactivated by first contacting the zeolite with at least one of water, aqueous solutions and water-containing gases at a temperature below 350.degree. C and then heating the zeolite to a temperature above 350.degree. C.