A lignite-geothermal hybrid power and hydrogen production plant for green cities and sustainable buildings

2010 ◽  
Vol 35 (2) ◽  
pp. 138-145 ◽  
Author(s):  
Birol Kilkis
Keyword(s):  
Hydrogen Production ◽  
Production Plant ◽  
Sustainable Buildings ◽  
Hybrid Power ◽  
Green Cities

scholarly journals Dynamic Modelling of Hydrogen Production Plant Based on MHTRG

2020 ◽  
Vol 53 (2) ◽  
pp. 11675-11680
Author(s):  
Miao Liu ◽  
Zhe Dong ◽  
Jiang Di ◽  
Xiaojin Huang
Keyword(s):  
Hydrogen Production ◽  
Dynamic Modelling ◽  
Production Plant

Profitability of an electrolysis based hydrogen production plant providing grid balancing services

2015 ◽  
Vol 40 (29) ◽  
pp. 8778-8787 ◽  
Author(s):  
Benjamin Guinot ◽  
Florent Montignac ◽  
Bénédicte Champel ◽  
Didier Vannucci
Keyword(s):  
Hydrogen Production ◽  
Production Plant ◽  
Balancing Services

scholarly journals Experimental Demonstration and Validation of Hydrogen Production Based on Gasification of Lignocellulosic Feedstock

2018 ◽  
Vol 2 (4) ◽  
pp. 61 ◽  
Author(s):  
Jürgen Loipersböck ◽  
Markus Luisser ◽  
Stefan Müller ◽  
Hermann Hofbauer ◽  
Reinhard Rauch
Keyword(s):  
Hydrogen Production ◽  
Pressure Swing Adsorption ◽  
Production Plant ◽  
Flow Sheet ◽  
Hydrogen Yield ◽  
Fuel Feed ◽  
Worldwide Production ◽  
Lignocellulosic Feedstock ◽  
Production Of Hydrogen ◽  
Pressure Swing

The worldwide production of hydrogen in 2010 was estimated to be approximately 50 Mt/a, mostly based on fossil fuels. By using lignocellulosic feedstock, an environmentally friendly hydrogen production route can be established. A flow sheet simulation for a biomass based hydrogen production plant was published in a previous work. The plant layout consisted of a dual fluidized bed gasifier including a gas cooler and a dust filter. Subsequently, a water gas shift plant was installed to enhance the hydrogen yield and a biodiesel scrubber was used to remove tars and water from the syngas. CO2 was removed and the gas was compressed to separate hydrogen in a pressure swing adsorption. A steam reformer was used to reform the hydrocarbon-rich tail gas of the pressure swing adsorption and increase the hydrogen yield. Based on this work, a research facility was erected and the results were validated. These results were used to upscale the research plant to a 10 MW fuel feed scale. A validation of the system showed a chemical efficiency of the system of 60% and an overall efficiency of 55%, which indicates the high potential of this technology.

scholarly journals Analysis of a High Temperature Gas-Cooled Reactor Powered High Temperature Electrolysis Hydrogen Plant

2010 ◽  
Author(s):  
M. G. McKellar ◽  
E. A. Harvego ◽  
A. M. Gandrik
Keyword(s):  
High Temperature ◽  
Hydrogen Production ◽  
Economic Analysis ◽  
Electric Power ◽  
Production Rate ◽  
Production Plant ◽  
System Pressure ◽  
Reference Design ◽  
High Temperature Gas ◽  
High Temperature Electrolysis

An updated reference design for a commercial-scale high-temperature electrolysis (HTE) plant for hydrogen production has been developed. The HTE plant is powered by a high-temperature gas-cooled reactor (HTGR) whose configuration and operating conditions are based on the latest design parameters planned for the Next Generation Nuclear Plant (NGNP). The current HTGR reference design specifies a reactor power of 600 MWt, with a primary system pressure of 7.0 MPa, and reactor inlet and outlet fluid temperatures of 322°C and 750°C, respectively. The reactor heat is used to produce heat and electric power for the HTE plant. A Rankine steam cycle with a power conversion efficiency of 44.4% was used to provide the electric power. The electrolysis unit used to produce hydrogen includes 1.1 million cells with a per-cell active area of 225 cm2. The reference hydrogen production plant operates at a system pressure of 5.0 MPa, and utilizes a steam-sweep system to remove the excess oxygen that is evolved on the anode (oxygen) side of the electrolyzer. The overall system thermal-to-hydrogen production efficiency (based on the higher heating value of the produced hydrogen) is 42.8% at a hydrogen production rate of 1.85 kg/s (66 million SCFD) and an oxygen production rate of 14.6 kg/s (33 million SCFD). An economic analysis of this plant was performed with realistic financial and cost estimating The results of the economic analysis demonstrated that the HTE hydrogen production plant driven by a high-temperature helium-cooled nuclear power plant can deliver hydrogen at a competitive cost. A cost of $3.03/kg of hydrogen was calculated assuming an internal rate of return of 10% and a debt to equity ratio of 80%/20% for a reactor cost of $2000/kWt and $2.41/kg of hydrogen for a reactor cost of $1400/kWt.

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