Investigation of fixed-bed photocatalytic membrane reactors based on submerged ceramic membranes

2018 ◽  
Vol 191 ◽  
pp. 332-342 ◽  
Author(s):  
Duy Dũng Phan ◽  
Frank Babick ◽  
Thị Huyền Trang Trịnh ◽  
Minh Tan Nguyen ◽  
Wolfgang Samhaber ◽  
...  
Keyword(s):  
Fixed Bed ◽  
Ceramic Membranes ◽  
Membrane Reactors

Inorganic Membranes for Hydrogen Production from the Water-Gas Shift Reaction: Materials, Reactor Design, and Simulation

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Li Ping Ding ◽  
Zehong Wang
Keyword(s):  
Membrane Reactor ◽  
Ceramic Membranes ◽  
Reactor Design ◽  
Membrane Reactors ◽  
Water Gas Shift ◽  
Inorganic Membrane ◽  
Inorganic Membranes ◽  
Separation And Purification ◽  
Wgs Reaction ◽  
Water Gas

Inorganic membranes for gas separation and purification have attracted great research interest. One application utilizing these materials is for H2 production from the water-gas shift reactions (WGS). The exothermic, reversible WGS reaction is controlled by thermodynamic equilibrium and exhibits decreased conversion with increasing temperatures. It is envisaged that the reaction conversion will surpass the equilibrium value if the reaction is conducted in a hydrogen-permselective membrane reactor, where the hydrogen product can be continuously removed from the reactor to shift the reaction equilibrium. In this article, the most recent development on material synthesis and fabrication of microporous ceramic membranes and dense palladium-based metal membranes are firstly reviewed according to their performance for H2 permeance and permselectivity over slightly larger molecules. The modification methods for improving membrane structure integrity, hydrophobicity, and stability at high temperature operation are also discussed. Subsequently, inorganic membrane reactors for the WGS reaction are evaluated in terms of CO conversion, hydrogen purity and operation parameters. Finally, modeling on gas transport through inorganic membranes and simulation of membrane reactors are discussed. By comparing the performance of various membranes, future prospective and improvement on membrane preparation and membrane reactor design are proposed.

scholarly journals Simulasi produksi hidrogen melalui CO2 methane reforming pada reaktor membran

2018 ◽  
Vol 6 (3) ◽  
pp. 666
Author(s):  
Azis Trianto ◽  
Ira Santrina J C ◽  
Susilo Yuwono
Keyword(s):  
Hydrogen Production ◽  
Membrane Reactor ◽  
Fixed Bed ◽  
Environmentally Friendly ◽  
Alternative Fuel ◽  
Membrane Reactors ◽  
Fixed Bed Reactor ◽  
Methane Reforming ◽  
Generation System ◽  
Promising Alternative

Hydrogen is a promising alternative fuel to establish environmentally friendly energy generation system. One of the methods for producing hydrogen is C02 methane reforming (CMR) process. Despite producing H2, this process also consumes CO2 enabling it to be used as a scheme for mitigating CO2. Conventionally, the hydrogen production via CMR is conducted in a fixed bed reactor. However low conversion is usually found in this kind of reactor. To increase conversion, a membrane reactor can be used. Two types of membrane may be employed to conduct this reaction, i.e. prorous  vycor and nanosil membrane  reactor.  This study  evaluated the  performances  of CMR con 1ucted in membrane ractors andfixed-bed reactor. The results show that the conversion obtained in nanosil membrane reactor is higher than those obtained in porous vycor membrane reactor and fixed-bed reactor. With the change in reactant flowrate, it is obtained that the conversions in membrane reactors are more stable than those infixed bed reactors.Keywords: Hydrogen Production, Membrane Reactor, Methane Reforming AbstrakHidrogen merupakan bahan bakar alternatif yang sangat menjanjikan untuk sistem pembangkitan energi yang lebih ramah lingkungan. Salah satu rute produksi hidrogen adalah melalui reformasi metana dengan karbondioksida (C02 Methane Reforming/CMR). Saat ini telah dikembangkan proses CMR menggunakan membran yang mampu meningkatkan laju produksi H2• Pada makalah ini dikaji dua tipe reaktor membran untuk maksud peningkatan produksi hidrogen tersebut, yakni reaktor membran dengan basis membran porous vycor dan nanosil. Sebagai pembanding, dilakukanjuga evaluasi unjuk kerja reaksi CMRpada reaktorfzxe-bed. Hasil kajian ini menurljukkan bahwa reaktor nanosil danporous vycor mampu memberikan konversiyang lebih besar dibanding reaktor fixed-bed. Lebihjauh, reaktor membran dengan nanosil membran mampu memberikan laju produksi hidrogen yang lebih tinggi dibanding reaktor membran dengan membran porous vycor. Lebih jauh, pada perubahan laju molar reaktan, reaktor membran menurijukkan stabilitas yang lebih baik dibanding reaktor fixed-bed.Kata Kunci: Produksi Hidrogen, Reaktor Membran, Reformasi Metana

Fixed bed membrane reactors for ultrapure hydrogen production: modeling approach

2017 ◽  
pp. 231-257
Author(s):  
Marjan Alavi Alavi ◽  
Adolfo Iulianelli Iulianelli ◽  
Mohammad Reza Rahimpour Rahimpour ◽  
Reza Eslamloueyan Eslamloueyan ◽  
Marcello De Falco De Falco ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Fixed Bed ◽  
Membrane Reactors ◽  
Modeling Approach ◽  
Production Modeling
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