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Prikaz rezultata 21-30 od 144
Energy and economy savings in the process of methanol synthesis unsig Pinch technology / Energetsko i ekonomsko poboljšanje procesa sinteze metanola primenom Pinch tehnologije
(Serbian Chemical Society, Belgrade, 2004)
A heat exchanger network (HEN) for the process of methanol synthesis has been studied by pinch design analysis. Great economic and energy savings were realized by the pinch analysis in comparison to the existing plant. ...
Dynamic holdup in a countercurrent gas - flowing solids - packed bed contactors / Dinamički sadržaj pokretne čvrste faze u suprotnostrujnim kontaktorima gas - čvrsto - čvrsto
(Serbian Chemical Society, Belgrade, 2004)
Equations for the prediction of the holdup of dynamic solids in countercurrent gas – flowing solids – packed bed contactors are presented in this paper. The correlations do not require the use of parameters that need to ...
Modeling and predictions of solids dynamic holdup in gas-flowing solids-fixed bed contactors
(Amer Chemical Soc, Washington, 2004)
A model based on first principles and free of any semiempirical parameters is presented for trickling solids holdup in gas-flowing solids-fixed bed contactors. A small double-cone cavity is used to characterize the voids ...
Water plus esters plus methanol: experimental data, correlation and prediction of surface and interfacial tensions at 303.15 K and atmospheric pressure
(Elsevier, Amsterdam, 2004)
For the ternary system water + ethyl propionate + methanol, and the constituent binaries, the surface tension at 303.15 K and atmospheric pressure was measured over the whole miscible composition range. The liquid interfacial ...
A new technological solution for the manufacture of a borer for iron notch opening at the blast furnace plant / Primena aluminotermijskog postupka izrade i zavarivanja vrha burgija koje se koriste za otvoranje visoke peći tokom ispusta gvožđa
(Institut za istrazivanja i projektovanja u privredi, 2004)
A new technology for the manufacture of a borer by alumino-thermal method, system design for performing alumino-thermal reaction, as well as required quality of termite steel, is disclosed in this paper. In addition to ...
Photoacoustic study of CO2-laser coincidences with absorption of some organic solvent vapours
(Elsevier, Amsterdam, 2004)
Detection of specific molecules in the atmosphere is motivated by the need for monitoring the emission of industrial pollutants. CO2-laser photoacoustic (PA) spectroscopy was used here to obtain coincidence spectra of the ...
Substituent and solvent effects on the UV/Vis absorption spectra of 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones
(Elsevier, Amsterdam, 2004)
Absorption spectra of ten 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones have been recorded in fifteen solvents in the range 200-600 nm. The substituents at the phenyl nucleus are as follows: OH, OCH3, ...
Behavior of smart ballistic composite materials: Comparisons experimental results with numerical simulations / Analiza ponašanja smart balističkih kompozita - poređenje eksperimentalnih rezultata i numeričke simulacije
(Visoka tehnička škola strukovnih studija, Beograd, 2004)
The object of this paper is exploration of application of optical fibers as intensity-based sensors in real-time damage detection in laminate composite materials, and discussion of loading transfer mechanisms through ...
Apparent enthalpies of activation for oxygen reduction at Pt3Co electrode in alkaline solution
(Progress in Advanced Materials and Processes: Proceedings of the Fifth Jugoslav Materials Research Society, YUCOMAT V, 2004)
Oxygen reduction (OR) at a Pt3Co alloy electrode has been examined in alkaline solutions of different pH's in the temperature range from 274 to 313 K. At all temperatures, two distinct E-log j rep-ions are observed. At low ...
Influence of the electrode parameters on the pulse shape characteristic at small pressure and inter-electrode gap values
(IEEE Conference Record - Abstracts: The 31st IEEE International Conference on Plasma Science, ICOPS2004, 2004)
Gas filled surge arresters (GFSA) has working point close to minimum on Paschen curve. Below that point breakdown follows Townsend's mechanism, i.e. the secondary processes on the electrodes dominate the secondary processes ...