Abstract: Ammonia and 5 to 40 volume percent hydrogen sulfide containing vapors which arise in the vaporization of process water from hydrogenation or a crude oil fraction or in gas treatment in a coking plant, can be subjected in a cracking catalyst reactor to breakdown of the ammonia to nitrogen and hydrogen. The resulting process gas is cooled to 250.degree. to 350.degree. C. and is fed to a hydrogenation reactor where any sulfur is hydrogenated to the hydrogen sulfide. The process gas can then be subjected to further treatment without the danger of sulfur blockage of the process lines. For example, the hydrogen sulfide can be removed by a selective absorption process.

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.