Thermochemical water-splitting cycle, bench-scale investigations and process engineering. Annual report, October 1, 1978-September 30, 1979

Technical Report · Sat Mar 01 04:00:00 EST 1980

DOI:https://doi.org/10.2172/5416940· OSTI ID:5416940

Caprioglio, G.; McCorkle, K. H.; Besenbruch, G. E.; Rode, J. S.

A program to investigate thermochemical water splitting has been under way at General Atomic Company (GA) since October 1972. This document is an annual progress report of Department of Energy (DOE) sponsored process development work on the GA sulfur-iodine thermochemical water splitting cycle. The work consisted of laboratory bench-scale investigations, demonstration of the process in a closed-loop cycle demonstrator, and process engineering design studies. A bench-scale system, consisting of three subunits, has been designed to study the cycle under continuous flow conditions. The designs of subunit I, which models the main solution reaction and product separation, and subunit II, which models the concentration and decomposition of sulfuric acid, were presented in an earlier annual report. The design of subunit III, which models the purification and decomposition of hydrogen iodide, is given in this report. Progress on the installation and operation of subunits I and II is described. A closed-loop cycle demonstrator was installed and operated based on a DOE request. Operation of the GA sulfur-iodine cycle was demonstrated in this system under recycle conditions. The process engineering addresses the flowsheet design of a large-scale production process consisting of four chemical sections (I through IV) and one helium heat supply section (V). The completed designs for sections I through V are presented. The thermal efficiency of the process calculated from the present flowsheet is 47%.

• Research Organization: General Atomic Co., San Diego, CA (USA)
• DOE Contract Number: AT03-76SF90351
• OSTI ID: 5416940
• Report Number(s): GA-A-15788
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080102* -- Hydrogen-- Production-- Thermochemical Processes
BENCH-SCALE EXPERIMENTS
CHALCOGENIDES
CRYOGENIC FLUIDS
DESIGN
DIAGRAMS
ELEMENTS
FLOWSHEETS
FLUIDS
HALOGENS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INORGANIC ACIDS
IODINE
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PRODUCTION
RESEARCH PROGRAMS
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFURIC ACID
THERMOCHEMICAL PROCESSES
WATER