Conceptual designs of hydrogen production, purification, compression and carbon dioxide capture

Wu, Wei; Kuo, Po-Chih

doi:10.1016/j.enconman.2015.06.046

Cited by 9 publications

(3 citation statements)

References 22 publications

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“…The various methods available for hydrogen production are divided into two categories depending on the renewability; the first category is hydrogen production using fossil sources and includes methods such as partial oxidation of heavy oil and steam reforming and partial oxidation of natural gas. 61–63 The second category is hydrogen production using non-fossil or renewable sources, which includes photo-electro-chemical, biological, biochemical, thermochemical methods as well as water thermolysis, water radiolysis, using biomass materials, and water electrolysis. 64–71 Considering the ease and convenience of hydrogen production via water electrolysis, 71 the system discussed in this paper is assumed to be using this method.…”

Section: Methodsmentioning

confidence: 99%

Hydrogen production using wind energy from sea water: A case study on Southern and Northern coasts of Iran

Rezaei

Mostafaeipour

Qolipour

et al. 2018

Energy & Environment

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In recent decades, earth’s sharp population growth followed by increasing demand for energy has turned the energy and its current and future sources into much debated issues. Given the well-known consequences of excessive reliance on fossil energy sources, this study is concentrated on wind-powered hydrogen production by desalination of sea water and then subjecting the product to electrolysis. For this purpose, a coastal city was selected from each Iranian coastal province, and then the wind energy generation potential in these cities was evaluated by Weibull distribution function. The amount of energy to be generated by three commercially available wind turbines and the amount of desalinated water and hydrogen to be produced in each area were then evaluated. The results showed that the port of Anzali on the coast of the Caspian Sea has an average annual wind power density of 327 w/m2, and thus enjoys the best wind energy generation potential among the studied coastal areas. The annual energy generation to be achieved by one EWT direct wind 52/900 turbine installed in this port was found to be 2315.53 MWh, which is equivalent to 1804 tons of net annual CO2 emission reduction. The total energy output of the said turbine could be used to produce 439,950.7 m3 of treated water or 35,973.49 kg of hydrogen a year. Thus, a wind farm containing 55 of these turbines could provide enough power to produce the hydrogen needed to fuel all private cars in Anzali.

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Section: Methodsmentioning

confidence: 99%

Hydrogen production using wind energy from sea water: A case study on Southern and Northern coasts of Iran

Rezaei

Mostafaeipour

Qolipour

et al. 2018

Energy & Environment

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“…Wu et al 17 designed a coupled process of SMR and CO 2 R reactor to produce syngas, which can effectively suppress CO 2 emission. Furthermore, Wu et al 18 put forward an integrated system combined with an SMR reactor, a CO 2 R reactor, a WGS unit and a CCS unit, which can achieve higher energy efficiency and near‐zero CO 2 emission. In order to significantly reduce CO 2 emission of the fossil fuel based hydrogen production plants, Muradov et al 19 discussed the status quo and prospects of three hydrogen production methods with low CO 2 emission, including the coupled hydrogen production plants with a CCS unit, the hydrogen production of decomposing hydrocarbons into hydrogen and carbon as well as the combined hydrogen production process with some non‐carbon energy sources like nuclear and solar.…”

Section: Introductionmentioning

confidence: 99%

Energy‐effective carbon dioxide capture and storage design in hydrogen production from liquefied natural gas

et al. 2021

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Summary To solve the problems of excessive CO2 emission and low resource utilization, which exist in the original hydrogen production process that occurs in an oil refinery, the original natural gas steam reforming process is improved by proposing a new coupled energy‐effective hydrogen production process from liquefied natural gas (LNG) with a CO2 capture and storage (CCS) unit; this is based on the background that the oil refinery takes the LNG of the adjacent receiving station as feedstock to produce hydrogen products. The newly designed process recovers the high‐grade cold energy released by the raw LNG during gasification to liquefy the CO2 generated in the process, which achieves energy integration to the greatest extent and improves the energy utilization efficiency. Meanwhile, the unreacted raw gas is recycled to improve the resource utilization. Moreover, to obtain the optimal operating parameters of the new process for further evaluation of its advantages, the global optimization model with the optimal overall economic benefit as the objective function is established and the best‐operating conditions for the new process with optimal economic benefit are obtained. The result of the energy analysis of the thermodynamic process indicates the exergy efficiency of the new process reaches 60.14%. Compared with the original process, even though the total energy consumption of the new process is increased, the economic benefit still grows by 123.6 million CNY/year owing to the increasing of CO2 product benefit with a high recovery rate of 99.5% in the hydrogen production process and an overall CO2 recovery rate of 69.72%. This study can provide theoretical references for the design and actual production of the hydrogen production process from natural gas.

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“…Notably, the reforming and gasification processes all require additional steps for shifting the CO and for separating the CO 2 . Recently, the calcium looping and oxy‐fuel combustion technologies in some reforming process carried out a higher concentration of CO 2 in the flue gas, which was a crucial strategy for carbon dioxide capture and storage . Moreover, these CO 2 capture technologies could be integrated with the combined heat and power (CHP) systems …”

Section: Introductionmentioning

confidence: 99%

Design and energy evaluation of a stand-alone copper-chlorine (Cu-Cl) thermochemical cycle system for trigeneration of electricity, hydrogen, and oxygen

Hsu

Chen

2017

Int J Energy Res

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Summary In this article, a new stand‐alone Cu‐Cl cycle system (SACuCl) for trigeneration of electricity, hydrogen, and oxygen using a combination of a specific combined heat and power (CHP) unit and a 2‐step Cu‐Cl cycle using a CuCl/HCl electrolyzer is presented. Based on the self‐heat recuperation technology for the CHP unit and the heat integration of the Cu‐Cl cycle unit, the power efficiency of the SACuCl for 5 prescribed scenarios (case studies) is predicted to achieve about 48% at least. The SACuCl uses the technologies of the dry reforming of methane and the oxy‐fuel combustion to achieve a relatively high CO2 concentration in the flue gas, and CO2 emissions for power generation could be almost restricted by 0.418 kg/kWh. From the aspect of the electricity required for hydrogen production, it is verified that the 2‐step Cu‐Cl cycle system is superior to the conventional water electrolyzer because the CHP process supplies the heat/electricity for Cu‐Cl thermochemical reactions and a thermoelectric generator is connected to the exhaust gas for recovering the power consumption from the compressor and the CuCl/HCl electrolyzer. Finally, the heat exchanger network and the pinch technology are employed to determine the optimum heat recovery of the Cu‐Cl cycle. In case 5 analyzed for the SACuCl, the electricity required for the heat‐integrated 2‐step Cu‐Cl cycle is predicted to dramatically decrease from 4.39 to 0.452 kWh/m3 H2 and the cycle energy efficiency could be obviously increased from 23.77 to 31.97%.

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Conceptual designs of hydrogen production, purification, compression and carbon dioxide capture

Cited by 9 publications

References 22 publications

Hydrogen production using wind energy from sea water: A case study on Southern and Northern coasts of Iran

Hydrogen production using wind energy from sea water: A case study on Southern and Northern coasts of Iran

Energy‐effective carbon dioxide capture and storage design in hydrogen production from liquefied natural gas

Design and energy evaluation of a stand-alone copper-chlorine (Cu-Cl) thermochemical cycle system for trigeneration of electricity, hydrogen, and oxygen

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