نتایج جستجو برای: steam cracking

تعداد نتایج: 30413  

The purpose of this study was to investigate the effects of warm and cold physical as well as chemical processing methods on the nutritive value of barley grains by gas production technique. The processing methods included milling, steam flaking, extruding and soaking up the grain in water containing 1.00% citric acid, 1.00% propionic acid and 0.01 M sulfuric acid. Two-hundred mg of milling sam...

Journal: :Industrial & Engineering Chemistry Research 2023

Prior studies found that the carburization tendency is negligible for technically developed materials at temperatures below 900 °C, especially Al-containing alloys compared to non-Al-containing applied in steam cracking reactors. However, it unclear whether this benefit remains higher temperatures. This work coke deposition tendencies of recently each other and a conventional material when etha...

Journal: :Processes 2023

Up to 80% of hydrogen production is currently carried out through CO2 emission-intensive natural gas reforming and coal gasification. Water-splitting electrolysis using renewable energy (green H2) the only process that does not emit greenhouses gases, but it a quite energy-demanding process. To significantly contribute clean transition, critical low-carbon routes can replace current methods exp...

2005
Patrick Waters James D. Kiely Earl C. Johns

Thin film delamination can occur when the stored elastic energy per unit area in the film due to the residual stress exceeds the interfacial toughness. Telephone cord morphology is commonly observed in delaminating thin films under compressive stresses. Here, the biaxial film stress is partially relieved by film buckling in the direction perpendicular to the telephone cord propagation, and by "...

Journal: :Journal of Physical Chemistry C 2021

Introducing a catalyst for dehydrogenation of ethane (EDH) steam cracking represents promising solution with high feasibility to realize efficient ethylene production. We investigated EDH over transition-metal-doped CeO2 catalysts at 873 K in the presence steam. Ce0.8Co0.2O2 exhibited activity and selectivity (ca. 95%). In absence H2O, catalytic dropped rapidly, indicating promotive effect H2O ...

2002
S. Bakhtiari J. Y. Park D. S. Kupperman W. J. Shack

Eddy current (EC) estimate of flaw size obtained from inservice inspection is often the primary means of assessing the structural integrity of steam generator tubes. Reliable prediction of failure pressure and leak rate in tubes with complex cracking requires more detailed information about the geometry and extent of degradation than is generally available from conventional bobbin coil examinat...

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