Experimental examination of syngas recovery from acid gases. (15th February 2016)

• Record Type: Journal Article
• Authors: El-Melih, A.M.; Ibrahim, S.; Gupta, A.K.; Al Shoaibi, A.
• Is Part Of: Applied energy. Volume 164(2016)
• Page Start: 64
• Page End: 68
• Publication Date: 2016-02-15
• Subjects: Sulfur recovery -- Hydrogen production -- Syngas -- Acid gas -- Hydrogen sulfide; Power (Mechanics) -- Periodicals; Energy conservation -- Periodicals; Energy conversion -- Periodicals; 621.042
• DOI: 10.1016/j.apenergy.2015.11.025
• Languages: English
• ISSNs: 0306-2619

Abstract

Highlights: Examined syngas production from thermal decomposition of H2 S and CO2 . Temperature and acid gas composition directly impacts H2 and CO produced. H2 S pyrolysis causes H2 production to increase at higher reactor temperatures. CO2 addition into H2 S decreased H2 production at higher reactor temperatures. CO2 easily reduced in the presence of H2 S pyrolytic environment. Abstract: This paper shows the potential for valuable syngas (H2 and CO) production from a laboratory-scale reactor, as an alternative and viable means for the treatment of acid gas (H2 S and CO2 ). Claus process technology currently used for acid gas treatment often suffers from lack of high process efficiency due to various impurities present in acid gas that cause non-uniform gas composition. Increased environmental regulations on sulfur emissions have challenged environmental engineers to seek safe, reliable and efficient means of acid gas conversion to useful products. This paper provides suitable input and operational conditions of the reactor that helps to produce syngas from acid gas, having wide range of composition at high conversion rate of acid gas (H2 S and CO2 ) to minimize environmental burden. The results reveal the importance of reactor temperature and the role provided by CO2 in acid gas on the composition of syngas produced. The results show that a reactor temperature of 1373–1473 K and high residence time favors the production of syngas at high conversion efficiency of acid gas. The syngas produced can be utilized for energy generation or value added products. The operational conditions provide means to quantify reactor performance with different composition of the syngas to aid in the production of biofuels and value added products.