Numerical study of heat transfer and sulfuric acid decomposition in the process of hydrogen production

2019 ◽  
Vol 43 (11) ◽  
pp. 5969-5982 ◽  
Author(s):  
Qi Sun ◽  
Qunxiang Gao ◽  
Ping Zhang ◽  
Wei Peng ◽  
Songzhe Chen ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Sulfuric Acid ◽  
Hydrogen Production ◽  
Numerical Study ◽  
Acid Decomposition ◽  
Sulfuric Acid Decomposition

Modeling of a Bayonet Reactor for Sulfuric Acid Decomposition in Thermo-Electrochemical Sulfur Based Hydrogen Production Processes

2017 ◽  
Vol 75 (43) ◽  
pp. 7-15 ◽  
Author(s):  
Claudio Corgnale ◽  
Sirivatch Shimpalee ◽  
Maximilian Gorensek ◽  
John W. Weidner ◽  
William Summers
Keyword(s):  
Sulfuric Acid ◽  
Hydrogen Production ◽  
Acid Decomposition ◽  
Production Processes ◽  
Sulfuric Acid Decomposition

scholarly journals A DYNAMIC SIMULATION OF THE SULFURIC ACID DECOMPOSITION PROCESS IN A SULFUR-IODINE NUCLEAR HYDROGEN PRODUCTION PLANT

2009 ◽  
Vol 41 (6) ◽  
pp. 831-840 ◽  
Author(s):  
Young-Joon Shin ◽  
Ji-Woon Chang ◽  
Ji-Hwan Kim ◽  
Byung-Heung Park ◽  
Ki-Young Lee ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Hydrogen Production ◽  
Dynamic Simulation ◽  
Decomposition Process ◽  
Production Plant ◽  
Acid Decomposition ◽  
Sulfuric Acid Decomposition

scholarly journals Structural Design Simulation of Bayonet Heat Exchanger for Sulfuric Acid Decomposition

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 422
Author(s):  
Qunxiang Gao ◽  
Ping Zhang ◽  
Wei Peng ◽  
Songzhe Chen ◽  
Gang Zhao
Keyword(s):  
Heat Transfer ◽  
Sulfuric Acid ◽  
Decomposition Rate ◽  
Structural Design ◽  
Catalytic Domain ◽  
Transport Model ◽  
Fluid Velocity ◽  
Sulfur Cycle ◽  
Acid Decomposition ◽  
Sulfuric Acid Decomposition

The heat generated in a high-temperature gas-cooled reactor can be used to drive the iodine-sulfur cycle to produce hydrogen. However, the sulfuric acid decomposition step requires a sophisticated sulfuric acid decomposer to increase the decomposition rate. The decomposition of sulfuric acid mainly occurs in the catalytic zone, and the optimization of its structure is very important for increasing the decomposition rate. This study focuses on the structural design of the catalytic zone of the sulfuric acid decomposer unit. The structure with double inner tubes is designed to analyze the influence of the inner tube heat transfer area and the catalytic volume of the annulus region on the decomposition rate. The species transport model is used to predict the proportion of products followed by analysis of the key factors affecting the decomposition rate of the catalytic domain. The results reveal that the new design attains the decomposition temperature requirements and increases the fluid velocity of the inner tube. This in turn promotes the heat transfer effect. The decomposition rate is negatively correlated with the flow rate. Nonetheless, a structure with double inner tubes which have the same total area of inner tube as a structure with a single inner tube has a better optimization effect than a structure which has the same annulus catalytic volume as a structure with single inner tube. It increases the decomposition rate by up to 6.1% while a structure which has the same annulus catalytic volume as a structure with a single inner tube does the same by up to 1.7%. The decomposition rate can be maintained at a relatively high level when the inlet velocity of the current structural design is about 0.2 m/s. This study provides a reference for the engineering design of sulfuric acid decomposer based on the heat exchange area and catalytic volume.

scholarly journals Development of New Corrosion Test Equipment Simulating Sulfuric Acid Decomposition Gas Environment in a Thermochemical Hydrogen Production Process

2019 ◽  
Vol 68 (6) ◽  
pp. 137-142
Author(s):  
Noriaki Hirota ◽  
Seiji Kasahara ◽  
Jin Iwatsuki ◽  
Yoshiyuki Imai ◽  
Hirofumi Ohashi ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Hydrogen Production ◽  
Production Process ◽  
Corrosion Test ◽  
Test Equipment ◽  
Acid Decomposition ◽  
Gas Environment ◽  
Sulfuric Acid Decomposition

Sulfuric acid decomposition on Pt/SiC-coated-alumina catalysts for SI cycle hydrogen production

2013 ◽  
Vol 38 (14) ◽  
pp. 6205-6209 ◽  
Author(s):  
Seoung Young Lee ◽  
Heon Jung ◽  
Won Joo Kim ◽  
Yong Gun Shul ◽  
Kwang-Deog Jung
Keyword(s):  
Sulfuric Acid ◽  
Hydrogen Production ◽  
Acid Decomposition ◽  
Sulfuric Acid Decomposition ◽  
Alumina Catalysts
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