Showing papers on "Sour gas published in 1973"

Method for removing hydrogen sulfide from hydrocarbon gas streams without pollution of the atmosphere

Abstract: Hydrogen sulfide is removed from natural or refinery gas streams by absorption, the absorbed hydrogen sulfide is partially converted to sulfur as in a claus plant and the residual hydrogen sulfide in the tail gas is concentrated by adsorption and recycled into the absorption stage at higher concentration such that all the hydrogen sulfide is removed from the gas stream as sulfur, thus eliminating atmospheric pollution which normally results from release of hydrogen sulfide containing tail gas.

Sour water disposal in fluid solids systems

Abstract: Sour water resolving from fluid solids hydrocarbon conversion processes, such as catalytic cracking and fluid coking, is disposed of by vaporization in a fluid solids bed. Heat for the vaporization is supplied by circulating hot solids between the steam generation vessel and the coker burner or heating unit in a fluid coking process or the regenerator in a catalytic cracking process. The process of this invention is particularly useful in the residuum conversion process which integrates coke gasification with fluid coking.

Removal of sulfur from polyether solvents

Abstract: Described herein is a method for removing residual sulfur from polyether solvents, especially those solvents which are utilized to remove hydrogen sulfide and carbon dioxide from sour natural gas streams. The first step of the method is to mix the sulfurcontaining polyether solvent with carbon disulfide which dissolves the sulfur therein. Next, the polyether solvent is extracted from the mixture with water. Finally, the purified polyether solvent is recovered by distilling out the water and filtering the residue which contains the polyether solvent.

Process for the conversion of hydrogen sulfide in gas streams of low hydrogen sulfide concentration to sulfur

Abstract: A gas stream containing hydrogen sulfide in low concentrations is indirectly heated to a temperature sufficient for the catalytic conversion through elemental sulfur by reaction with sulfur dioxide by the Claus process. Simultaneously, a sulfur dioxide containing gas streams is generated by combustion of sulfur with an oxygen containing gas in a flame zone, the sulfur being present in excess of that required to meet the sulfur dioxide requirements of the gas stream. Following recovery of excess sulfur from the combustion products from the flame zone, the gas streams are combined and pass over one or more Claus catalyst conversion stages where sulfur is formed by reaction of hydrogen sulfide with sulfur dioxide and recovered between each stage.

Ten Years' Experience with Sour Gas Production in Germany

Abstract: The sour-gas production in W. Germany and especially the problem of tubing string plugging by precipitation of elemental sulfur is described. The main trouble results from elemental sulfur dissolved or chemisorbed in the sour gas. It is intensified by the lack of condensable higher hydrocarbons in German sour gas. Remedies against sulfur plugging are critically examined. Up to now, only liquid sulfur solvents have been found suitable for economic sour-gas production under German conditions. Different solvents, their properties, their advantages and disadvantages are mentioned. Experience in Germany with the 2 main types of sulfur solvents, e.g., high boiling aliphatic hydrocarbons and aqueous alkali sulfide solutions are described and discussed. Both processes applied in Germany have their distinctions and drawbacks. Additional problems may rise with decreasing reservoir pressure and influx of formations waters. (20 refs.)