Hiperion process

Perox Process, 762 Takahax Process, 765 Stretford Process, 769 Hiperion Process, 794 Sulfolin Process, 797 Unisulf Process, 802... 

The section closes with a discussion of three new processes introduced in the 1980s they include the Unisulf, Sulfolin, and Hiperion processes. Unisulf and Sulfolin are vanadium-based processes that were designed to minimize or eliminate the need for spent solution... 

The Hiperion process is a modified version of the Takahax process. Prior to 1994. the process was licensed in the U.S. by Ultrasystems Engineers Contractors of Irvine, CA. In the Hiperion process, the active catalyst is a combination of naphthoquinone with chelated iron, which is claimed to considerably reduce the reoxidation residence time requirement when compared to the Takahax process (Dalrymple and Trofe, 1989). Since the volume of liquid needed in the oxidizer, and consequently the vessel size, is proportional to the residence time requirement, the change in solution chemistry is intended to reduce capital costs and make the process more attractive economically. 

In the Hiperion process (Douglas, 1990A, B), the HS ion is oxidized by the naphthoquinone (NQ) chelate to elemental sulfur and the quinone is reduced to the hydroquinone foim (HNQ) ... 

Figure 9-26. Process flow diagram of the Hiperion process H2S removal system. (Douglas, 1990AI...

Douglas, R. A., 1989, Hiperion Process Update—Commercial and Pilot Plant Experience, Proceedings of the 1989 GRI Liquid Redox Sulfur Recovery Conference, Austin, TX, p. 181. 

Douglas, R. A., 1990A, Hydrogen Sulfide Oxidation by Naphthoquinone Complexes—The Hiperion Process, paper presented at the 199th American Chemical Society Meeting. Boston, MA, April. 

Ultrasystems Engineers Contractors, 1989, The Hiperion Process, Bulletin 5189 P A, Irvine, CA. 

Hiperion A process for removing hydrogen sulfide and organic sulfur compounds from hydrocarbons. Similar to the Takahax process but using a solution of chelated iron and naphthaquinone. The elemental sulfur produced is removed by filtration. Licensed by Ultrasystems, CA. 

Another process option is the LO-CAT process, which employs chelated iron liquid redox chemistry and has been popular for smaller operations. Solution compositions include iron, proprietary chelates, a biocide, and a surfactant that facilitates sulfur sinking to the bottom of the oxidizer, where it is removed as a slurry. Other chelated iron processes include Sulferox and Hiperion (Dalrymple 1989). 

The process flow diagram for a typical Hiperion H2S removal unit is shown in Figure 9-26 (IDouglas, 1990A). The main equipment consists of two reaction vessels— an absorber and an oxidizer. The sour gas enters the bottom of the absorber colunm and flows upward through a stacked series of beds where it is contacted by downflowing catalyst solution. The H2S is oxidized to elemental sulfur which forms a slurry in the catalyst solution. The overhead... 

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