scholarly journals Combining steam-methane reforming, water-gas shift, and CO{sub 2} removal in a single-step process for hydrogen production. Final report for period March 15, 1997 - December 14, 2000

2001 ◽  
Author(s):  
Alejandro Lopez Ortiz ◽  
Bhaskar Balasubramanian ◽  
Douglas P Harrison
Keyword(s):  
Hydrogen Production ◽  
Single Step ◽  
Water Gas Shift ◽  
Final Report ◽  
Methane Reforming ◽  
Step Process ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Water Gas

scholarly journals CeZrOx Promoted Water-Gas Shift Reaction under Steam–Methane Reforming Conditions on Ni-HTASO5

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1110
Author(s):  
Qing Zhao ◽  
Ye Wang ◽  
Guiying Li ◽  
Changwei Hu
Keyword(s):  
Strong Acid ◽  
Catalytic Performance ◽  
Acid Sites ◽  
Water Gas Shift ◽  
Methane Reforming ◽  
Impregnation Method ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Shift Reaction ◽  
Water Gas

Ni-based catalysts (Ni-γ-Al2O3, Ni-HTASO5 and Ni-CeZrOx) were prepared by impregnation method and characterized by BET, AAS, XRD, H2-TPR, CO-TPD, NH3-TPD, XPS, TG-DSC-MS and Raman spectroscopies. Using CeZrOx-modified Al2O3 (HTASO5) as support, the catalyst exhibited good catalytic performance (TOFCH4 = 8.0 × 10−2 s−1, TOFH2 = 10.5 × 10−2 s−1) and carbon resistance for steam-methane reforming (SMR) reaction. Moreover, CeZrOx was able to enhance water-gas shift (WGS) reaction for more hydrogen production. It was found that the addition of CeZrOx could increase the content of active nickel precursor on the surface of the catalyst, which was beneficial to the decomposition of water and methane on Ni-HTASO5. Furthermore, Ni-HTASO5 could decrease the strong acid sites of the catalyst, which would not only contribute to the formation of low graphited carbon, but also decrease the amount of carbon deposition.

Estimation of the remaining lifetime of deactivated catalyst via the spatial average catalyst activity illustrated by the water–gas shift and steam methane reforming processes

2017 ◽  
Vol 121 (2) ◽  
pp. 371-385 ◽  
Author(s):  
Phungphai Phanawadee ◽  
Khingkhan Laipraseard ◽  
Gregory S. Yablonsky ◽  
Denis Constales ◽  
Wanwilai Jamroonrote ◽  
...  
Keyword(s):  
Catalyst Activity ◽  
Water Gas Shift ◽  
Methane Reforming ◽  
Spatial Average ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Water Gas

scholarly journals Pengaruh Komposisi Massa Bahan Baku dan Temperatur pada Steam Reformer terhadap Jumlah Produksi Bio-Hydrogen dengan Menggunakan Software ASPEN HYSYS V.10.0

2018 ◽  
Vol 2 (1) ◽  
pp. 24
Author(s):  
Rizki Kurnia Dermawan ◽  
Rif'an Fathoni ◽  
Anton Irawan
Keyword(s):  
Steam Reforming ◽  
Water Gas Shift ◽  
Methane Reforming ◽  
Steam Reformer ◽  
Steam Methane Reforming ◽  
Aspen Hysys ◽  
Steam Methane ◽  
Bio Oil ◽  
Water Gas

Proses pada pabrik bio hidrogen dari bio oil terbagi menjadi beberapa unit, yaitu unit dehidrooksigenasi, unit pemisahan, unit steam reforming, unit water gas shift, dan unit pemurnian. Penelitian ini menjelaskan tentangpengaruh perbandingan komposisi massa metana (CH4) dengan steam (H2O) serta pengaruh perbedaan temperatur pada unit steam methane reforming untuk melihat pengaruh pada produksi bio hidrogen. Penelitian ini dikerjakan menggunakan software simulasi proses Aspen Hysys v.10.0. Dengan menggunakan variabel temperatur pada steam reformer (800 °C, 850 °C, 900 °C, 950 °C, 1000 °C) dan variabel perbandingan komposisi massa steam dengan methane (CH4), yaitu 1:2, 1:1,25, 1:3, 1:3,5, 1:4. Dari penelitian yang dilakukan didapatkan pengaruh komposisi steam dan metana berbanding lurus dengan jumlah bio hidrogen yang dihasilkan. Serta, pengaruh perbedaan temperatur pada reaktor steam reformer berbanding lurus dengan jumlah produksi hidrogen. Dari hasil penelitian didapatkan jumlah produksi bio hidrogen terbaik 1300 kg/jam.Kata kunci: Aspen HYSYS, Bio Oil, Bio Hidrogen

Comparative Analysis of Advanced H2/Air Cycle Power Plants Based on Different Hydrogen Production Systems From Fossil Fuels

2004 ◽  
Author(s):  
M. Gambini ◽  
M. Vellini
Keyword(s):  
Hydrogen Production ◽  
Power Plants ◽  
Fossil Fuels ◽  
Coal Gasification ◽  
Fossil Fuel ◽  
H2 Production ◽  
Combined Cycle ◽  
Methane Reforming ◽  
Steam Methane Reforming ◽  
Steam Methane

In this paper two options for H2 production by means of fossil fuels are presented, evaluating their performance when integrated with advanced H2/air cycles. The investigation has been developed with reference to two different schemes, representative both of consolidated technology (combined cycle power plants) and of innovative technology (a new advance mixed cycle, named AMC). The two methods, here considered, to produce H2 are: • coal gasification: it permits transformation of a solid fuel into a gaseous one, by means of partial combustion reactions; • steam-methane reforming: it is the simplest and potentially the most economic method for producing hydrogen in the foreseeable future. These hydrogen production plants require material and energy integrations with the power section, and the best connections must be investigated in order to obtain good overall performance. The main results of the performed investigation are quite variable among the different H2 production options here considered: for example the efficiency value is over 34% for power plants coupled with coal decarbonization system, while it is in a range of 45–48% for power plants coupled with natural gas decarbonization. These differences are similar to those attainable by advanced combined cycle power plants fuelled by natural gas (traditional CC) and coal (IGCC). In other words, the decarbonization of different fossil fuels involves the same efficiency penalty related to the use of different fossil fuel in advanced cycle power plants (from CC to IGCC for example). The CO2 specific emissions depend on the fossil fuel type and the overall efficiency: adopting a removal efficiency of 90% in the CO2 absorption systems, the CO2 emission reduction is 87% and 82% in the coal gasification and in the steam-methane reforming respectively.

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