scholarly journals Technology Basis and Thermodynamic Analysis of an Acid Decomposition Process of Phosphorus Slime

2017 ◽  
Vol 33 (3) ◽  
pp. 1140-1145
Author(s):  
Ulzhalgas Nazarbek ◽  
Uilesbek Besterekov ◽  
Saule Nazarbekova ◽  
Aidar Bolysbek ◽  
Galya Kambarova
2015 ◽  
Vol 31 (3) ◽  
pp. 1409-1416
Author(s):  
U. B Nazarbek ◽  
U Besterekov ◽  
I. A Petropavlovsky ◽  
S. P Nazarbekova ◽  
O. K Beisenbayev

2009 ◽  
Vol 41 (6) ◽  
pp. 831-840 ◽  
Author(s):  
Young-Joon Shin ◽  
Ji-Woon Chang ◽  
Ji-Hwan Kim ◽  
Byung-Heung Park ◽  
Ki-Young Lee ◽  
...  

2021 ◽  
Vol 410 ◽  
pp. 235-240
Author(s):  
Boris P. Yur'ev ◽  
Vyacheslav A. Dudko

Carbonate decomposition with significant heat energy absorption takes place at siderite ore oxidizing roasting in a shaft furnace. Thermal dissociation of complex carbonates comprising the siderite ore was studied. Thermodynamic analysis was carried out for a sideroplesite decomposition process. Formulas allowing determination of the carbonate dissociation and exchange energy rates were obtained using the regular ion solution theory. The ion composition and thermodynamic activity simulation results were described for sideroplesites as well as iron and magnesium cation shares. The work output is of certain interest as knowing the initial sideroplesite decomposition temperature and the carbonate dissociation rate the optimal dimensions of various zones throughout the shaft furnace height may be defined, the roasting process time may be calculated and the optimal heat treatment conditions as well as the firing rate may be established.


1992 ◽  
Vol 114 (3) ◽  
pp. 227-234 ◽  
Author(s):  
A. Hammache ◽  
E. Bilgen

A thermochemical nuclear hydrogen producing process has been developed and evaluated from thermodynamics and engineering points of view. The cycle is based on sulfuric acid decomposition process developed earlier, which produces mechanical power using additional primary energy as well as excess process heat generated within the cycle. The sulfuric acid decomposition process has been closed using a sulfur dioxide electrochemical oxidizer cell and feasibility of its energy self-sufficient operation has been demonstrated. The first law efficiency of the cycle has been determined as 34.14 percent and the second law efficiency as 43.32 percent. It is found that the modified sulfuric acid decomposition section is improved by 14.8 percent compared to the basic process used in the sulfur family cycles. For a plant size producing 8.94 × 106 GJ H2 per year, the typical levelized costs of hydrogen are $20.15(1988) per GJ energy and $24.47(1988) per GJ exergy.


2001 ◽  
Vol 268 (6) ◽  
pp. 1554-1560 ◽  
Author(s):  
Reinskje Talhout ◽  
Jan B. F. N. Engberts

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