نتایج جستجو برای: air separation unit

تعداد نتایج: 705424  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

2016
Seung-Whee Rhee Hyeong-Jin Choi

Compact Fluorescent Lamps (CFLs) are composed of glass, plastic, non-ferrous metal, ferrous metal, paper, plastic, rubber, and so on. In order to separate glass and plastic among CFLs components, air separation unit is applied using the difference in specific gravity. Since specific gravities of glass, plastic, non-ferrous metals, rubber, etc. were widely spread, it can be separated by the diff...

2014
Ming - Lung Li Hao - Yeh Lee Ming - Wei Lee I - Lung Chien

Air separation Units (ASU) is widely used in many industries. ASU is difficult to operate due to high degree of energy integration. In this paper, steady-state and dynamics simulation of one of China Steel Corporation’s air separation unit have been studied. The goal is to figure out the formula among gaseous product demands and set points values of the control loops in this unit, and to build ...

Amir Sheikhi Mohammad Hosein Labbaf Mojghan Abbasi رحمت ستوده قره باغ,

Nowadays, membrane processes are widely used for high purity Nitrogen production. Separation of air by membranes is a flexible process in which the investment and operational costs are lower than for example adsorption or cryogenic processes. Such processes are based on relative permeability of air components which are transported by the pressure difference between two sides of the membrane. M...

Journal: :journal of chemical and petroleum engineering 2010
amir sheikhi رحمت ستوده قره باغ mohammad hosein labbaf mojghan abbasi

nowadays, membrane processes are widely used for high purity nitrogen production. separation of air by membranes is a flexible process in which the investment and operational costs are lower than for example adsorption or cryogenic processes. such processes are based on relative permeability of air components which are transported by the pressure difference between two sides of the membrane. ma...

Journal: :iranian journal of public health 0
s.naseri gh. mostafaee

in this research performed during 1993-1994, the effluent of behran oil refmery, in south of tehran, which produces different types of industrial oil and greases, was studied and 3 methods of gravity separation, coagulation and flocculation and dissolved air flotation were investigated. in the first phase of the survey, the quality and quantity of the effluent were determined. this showed an av...

بهرامی اصل, فرشاد, دهقانی, آناهیتا, زینال زاده, داریوش, فرزادکیا, مهدی, ندافی, کاظم, کرمانی, مجید,

Background and aims: Recently contact with bioaerosols has been presented as an important problem which endangers human being’s health. The aim of this investigation is to compare potential of separation of fungal aerosols in the air around Tehran’s Milad hospital, blood transfusion organization and waste water treatment plant of Tehran’s Shahrake Ghods. methods: this cross...

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