نتایج جستجو برای: ethane

تعداد نتایج: 4043  

Journal: :gas processing 0
shohreh fatemi school of chemical engineering, college of engineering, university of tehran mojtaba masoudi-nejad school of chemical engineering, college of engineering, university of tehran

the process of ethylene production from ethane dehydrogenation is one of the interesting processes in the field of conversion the petroleum light gases to the valuable products. in this process, the outlet gaseous product is a combination of ethylene, ethane and hydrogen. effective separation techniques are required for separation of ethylene from unreacted ethane. here a new adsorbent approach...

Journal: :iranian journal of oil & gas science and technology 2012
seyed hesam najibi hamid darabi mohammad javad kamali

recently, due to the very good market in ethane as a feedstock for petrochemical complexes, thereare some plans to make a deep ethane recovery from the gases produced in iran southern fields. inthis work, the feasibility of different technologies for deep ethane recovery from a specified feed gasproduced in one of the iran southern fields is reviewed. three different processes are selected ands...

Journal: Gas Processing 2014

The process of ethylene production from ethane dehydrogenation is one of the interesting processes in the field of conversion the petroleum light gases to the valuable products. In this process, the outlet gaseous product is a combination of ethylene, ethane and hydrogen. Effective separation techniques are required for separation of ethylene from unreacted ethane. Here a new adsorbent approach...

2009
H Hirai

Structural changes and preferential cage occupancies were examined for ethane hydrate and ethane-methane mixed gas hydrates with five compositions in a pressure range of 0.2 to 2.8 GPa at room temperature. X-ray diffractometry and Raman spectroscopy showed the following structural changes. The initial structure, structure I (sI), of ethane hydrate was retained up to 2.1 GPa without any structur...

Journal: :gas processing 0
maryam karamoddin school of chemical, gas and petroleum engineering, semnan university, semnan, iran farshad varaminian school of chemical, gas and petroleum engineering, semnan university, semnan, iran maryam daraee school of chemical, gas and petroleum engineering, semnan university, semnan, iran

â  abstract: in this work, the kinetics of ethane hydrate formation has been studied experimentally and a kinetic model based on chemical affinity has been described for predicting the hydrate growth process in the stirred batch reactor at a constant volume. the experiments were done with both pure water and aqueous solution of sodium dodecyl sulfate (sds). the effect of sds on formation kineti...

Journal: :Plant physiology 1982
G D Peiser M C Lizada S F Yang

Ethane formation, as a measure of lipid peroxidation, was studied in spinach (Spinacia oleracea L.) chloroplasts exposed to sulfite. Ethane formation required sulfite and light, and occurred with concomitant oxidation of sulfite to sulfate. In the dark, both ethane formation and sulfite oxidation were inhibited. Ethane formation was stimulated by ferric or ferrous ions and inhibited by ethylene...

Maede Salmasi Mina Doroudian Rad Somayeh Hosseinpour شهره فاطمی,

CH4, C2H6 and C2H4 are the most important outlet gaseous of oxidative couple methane (OCM) reaction and this process is a new technology for conversion of natural gas to ethane and ethylene products. In this study, adsorption of OCM outlet hydrocarbons over 10X zeolite has been examined at equilibrium conditions. Temperature and pressure are the most effective operational parameters in the batc...

Recently, due to the very good market in ethane as a feedstock for petrochemical complexes, there are some plans to make a deep ethane recovery from the gases produced in Iran southern fields. In this work, the feasibility of different technologies for deep ethane recovery from a specified feed gas produced in one of the Iran southern fields is reviewed. Three different processes are selected a...

Journal: :Plant physiology 1977
W W John R W Curtis

Ethane production by homogenates of Phaseolus vulgaris L. cv. Harvester was studied. The precursor of ethane was identified as linolenic acid. The liberation of ethane was optimum at pH 4.2 and was highest from homogenates of leaves and apical buds. When roots were homogenized in linolenic acid solution, ethane and ethylene production were stimulated. In corn root homogenates, ethylene biosynth...

Journal: :Chest 1996
B K Do H S Garewal N C Clements Y M Peng M P Habib

To determine the effect of nutritional agents on lipid peroxidation, 10 smokers were given 6 mg beta carotene, 200 IU vitamin E, and 250 mg vitamin C 4 times daily for 3 weeks. Lipid peroxidation was assessed by measuring baseline and postsupplementation levels of exhaled ethane. There was a 29% decrease in mean (+/-SD) exhaled ethane (4.06 +/- 1.49 vs 2.90 +/- 1.29 pmol.kg-1.min-1), with indiv...

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