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Sulfur-iodine cycle bunsen reaction

The sulfur-iodine (S-I) cycle is a thermochemical water-splitting process that utilizes thermal energy from a high-temperature heat source to produce hydrogen (H2). It is comprised of three coupled chemical reactions, as shown in figure 4.1. First, the central low-temperature Bunsen reaction (Section I) is employed to produce two... [Pg.81]

A bench-scale test facility for hydrogen production using the thermochemical iodine-sulfur (IS) process has been established at JAERI to verify the hydrogen production, to study the conditions for the reactions, and to gain experience for a large-scale plant [74]. The three reactions (see appendix A.2.3.) are performed in separate sections of the apparatus, the Bunsen reaction and the sulfuric acid decomposition at the same time to avoid SO2 storage (see Fig. 4-8). The process requires temperatures of 800 to 900 °C. Its feasibility was successfully demonstrated in a glass, quartz, and teflon lab-scale apparatus. In the course of six cycles completed, the total amounts of H2 and O2 produced were 16.4 1 and 9.9 1, respectively. The thermal efficiency achieved, however, was much smaller than the theoretical one of 47 - 50 % [44]. In late 1997, the continuous operation of the IS process cycle as a closed loop over 48 h resulted in the production of 44.8 1 of H2 [75]. [Pg.84]

The S—I thermochemical cycle is a well-known process for hydrogen production that involves three separate reactions. The first occurs in the Bunsen section in which water is reacted with iodine and sulfur dioxide (SO2) to form sulfuric and hydriodic acids, as follows ... [Pg.647]


See other pages where Sulfur-iodine cycle bunsen reaction is mentioned: [Pg.82]    [Pg.75]    [Pg.191]    [Pg.198]    [Pg.200]    [Pg.200]    [Pg.206]    [Pg.269]    [Pg.1085]   
See also in sourсe #XX -- [ Pg.84 , Pg.90 , Pg.91 , Pg.92 ]




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Bunsen

Bunsen reaction

Cycling reactions

Iodine reactions

Reaction cycle

Sulfur cycle

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