scholarly journals Development of SOFC-Type Reactor for NOx Decomposition and Graphite Oxidation

2005 ◽  
Vol 2005-07 (1) ◽  
pp. 306-309 ◽  
Author(s):  
Yoshinobu Fujishiro
Keyword(s):  
Type Reactor ◽  
Graphite Oxidation

Effect of draft tube diameter on nitrogen removal from domestic sewage in a draft tube type reactor

1998 ◽  
Vol 38 (1) ◽  
pp. 319-326
Author(s):  
Taku Fujiwara ◽  
Iso Somiya ◽  
Hiroshi Tsuno ◽  
Yoshio Okuno
Keyword(s):  
Flow Rate ◽  
Nitrogen Removal ◽  
Draft Tube ◽  
Domestic Sewage ◽  
Tube Diameter ◽  
Continuous Treatment ◽  
Anoxic Zone ◽  
Type Reactor ◽  
Tube Type ◽  
Volumetric Loading

The effect of the ratio of draft tube diameter to reactor diameter (Di/Do) on the efficiency of nitrogen removal from domestic sewage is discussed based on liquid-circulating flow rate and continuous treatment data. More than 2.5 minutes of circulation time in the annulus part, which is required to create an anoxic zone, could be maintained under operating conditions in which air flow rate per reactor volume was 2 m3/(m3 · hr) and Di/Do was 0.19. When Di/Do was set at 0.19, the average total organic carbon (TOC), total nitrogen (TN) and dissolved nitrogen (DN) removal efficiencies were 83.2%, 72.1% and 71.6%, respectively, which were higher than those when Di/Do was at 0.26 or 0.36. From these results, it is concluded that 0.19 is the best Di/Do for nitrogen removal in a draft-tube type reactor with an effective depth of 4.0m under the treatment condition in which the BOD volumetric loading rate is in the range 0.22 to 0.46 kgBOD/(m3 · day). More than 80% nitrification and denitrification efficiencies can be achieved simultaneously when both conditions, the aerobic zone ratio being more than 0.2, and the anoxic zone ratio being more than 0.3, are satisfied.

Investigation of irradiated metal of WWER-type reactor internals after 45 years of operation. Part 1. Research program and cutting out of samples from pressure vessel internals

2020 ◽  
pp. 135-143
Author(s):  
B. Z. Margolin ◽  
A. Ya. Varovin ◽  
A. J. Minkin ◽  
D. A. Gurin ◽  
V. A. Glukhov
Keyword(s):  
Research Program ◽  
Pressure Vessel ◽  
The Core ◽  
Type Reactor ◽  
Cutting Out ◽  
Cylindrical Samples ◽  
Reactor Internals

The program is presented for investigations of the metal of the most irradiated elements of the WWER-440 reactor of the Novovoronezh NPP Unit 3 decommissioned after 45 years of operation. The fragments (cylindrical samples) were cut out from various zones of the core baffle and segment of forming ring of core barrel.

TASS/SMR code improvement for small break LOCA applicability at an integral type reactor, SMART

2015 ◽  
Vol 295 ◽  
pp. 221-227 ◽  
Author(s):  
Young-Jong Chung ◽  
Soo-Hyung Kim ◽  
Sung-Won Lim ◽  
Kyoo-Hwan Bae
Keyword(s):  
Integral Type ◽  
Type Reactor

scholarly journals Beyond the classical kinetic model for chronic graphite oxidation by moisture in high temperature gas-cooled reactors

Carbon ◽  
2018 ◽  
Vol 127 ◽  
pp. 158-169 ◽  
Author(s):  
Cristian I. Contescu ◽  
Robert W. Mee ◽  
Yoonjo (Jo Jo) Lee ◽  
José D. Arregui-Mena ◽  
Nidia C. Gallego ◽  
...  
Keyword(s):  
High Temperature ◽  
Kinetic Model ◽  
Graphite Oxidation ◽  
High Temperature Gas

Average cross-sections for (n, p) reactions on calcium in a fission-type reactor spectrum

1974 ◽  
Vol 23 (1-2) ◽  
pp. 101-112 ◽  
Author(s):  
A. Bruggeman ◽  
W. Maenhaut ◽  
J. Hoste
Keyword(s):  
Cross Sections ◽  
Type Reactor ◽  
Reactor Spectrum
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