نتایج جستجو برای: bed reactor

تعداد نتایج: 75517  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
ahmad tavasoli kambiz sadaghiani abbas ali khodadadi yadollah mortazavi

in a novel dual bed reactor fischer-tropsch synthesis was studied by using two diffrent cobalt catalysts. an alkali-promoted cobalt catalyst was used in the first bed of a fixed-bed reactor followed by a rutenuim promoted cobalt catalyst in the second bed. the activity, product selectivity and accelerated deactivation of the system were assessed and compared with a conventional single bed react...

Abbas Ali Khodadadi Ahmad Tavasoli, Kambiz Sadaghiani Yadollah Mortazavi

In a novel dual bed reactor Fischer-Tropsch synthesis was studied by using two diffrent cobalt catalysts. An alkali-promoted cobalt catalyst was used in the first bed of a fixed-bed reactor followed by a Rutenuim promoted cobalt catalyst in the second bed. The activity, product selectivity and accelerated deactivation of the system were assessed and compared with a conventional single bed r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

Journal: :iranian journal of public health 0
jalil jafari dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran. alireza mesdaghinia dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran. ramin nabizadeh dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran. mehrdad farrokhi dept. of environmental health, school of public health, guilan university of medical sciences, rasht, iran. amir hossein mahvi dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran ; center for solid waste research, institute for environmental research, tehran university of medical sciences, tehran, iran.

anaerobic treatment methods are more suitable for the treatment of concentrated wastewater streams, offer lower operating costs, the production of usable biogas product. the aim of this study was to investigate the performance of an anaerobic fluidized bed reactor (afbr)-aerobic moving bed bio reactor (mbbr) in series arrangement to treat currant wastewater.the bed materials of afbr were cylind...

2013
Małgorzata CIEŃSKA Jolanta BRYJAK Jolanta LIESIENE

Abstract: The selection of a suitable type of reactor for the reaction with enzymes immobilized on the carriers is extremely important to industry. In this study the possibility of using pre-selected cellulose-based carriers (Granocel) to conduct the reaction in a stirred batch reactor and a fixed-bed reactor was investigated. It was shown that non-activated Granocel did not undergo compression...

Journal: :مجله بهداشت محیط و توسعه پایدار 0
mohammad faramarzian zahra derakhshan mohammad taghi ghaneian mohammad hassan ehrampoush

background: the modeling aims to simulate or optimize a process in physical, chemical or biological environments and the derived model will provide a considerable assistance to generate data and predict unknown condition, in case of sufficient suitability. unsuitable disposal and elimination of waste tires have polluted the environment and human life areas, it also have caused removal of a huge...

2009
Grzegorz Cema

.................................................................................................................................................... 1 I – INTRODUCTION .................................................................................................................................... 2 II – BACKGROUND .................................................................................

2014
Jalil Jaafari Alireza Mesdaghinia Ramin Nabizadeh Mohammad Hoseini Hossein kamani Amir Hossein Mahvi

One of the key parameters in Fluidized Bed reactors is the control of biofilm thickness and configuration. The effect of upflow velocity on performance and biofilm characteristics of an Anaerobic Fluidized Bed Reactor was studied in treating Currant wastewater at various loading rates. The reactor used this study was made of a plexiglass column being 60 mm diameter, 140 cm height, and a volume ...

ژورنال: مواد پرانرژی 2019

In this research, first, a one-dimensional stable model for a catalytic stabilization reactor is presented. All mass transfer, heat transfer and momentum equations are considered in this model with applying appropriate assumptions. The results of modeling predict temperature and concentration changes and also pressure drop along the reactor bed length. By applying the modeling, hydrazine cataly...

Journal: :physical chemistry and electrochemistry 0

ethyl benzene used increasingly each year is the raw material of producing styrene monomer. this substanceis produced from benzene alkylation with ethylene or ethanol, depending on the availability and cost of rawmaterials. in this study benzene alkylation in the presence of ethanol in a catalytic fixed bed reactor inthree states of isotherm, adiabatic and non-isotherm-non-adiabatic is mathemat...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید