A comprehensive review on hydrogen production from coal gasification: Challenges and Opportunities

Summary This review paper focuses on converting plastic wastes into clean hydrogen via gasification for better sustainability. In this regard, various aspects of hydrogen production from plastic wastes are discussed and comparatively evaluated, including the state‐of‐the‐art and comparative evaluation, environmental and economical dimensions, global warming aspects, policies and strategies, a case study including energetic and exergetic performance evaluations, challenges and opportunities, and future directions possibly in the area. Additionally, this paper outlines what contributions it makes to the current literature about hydrogen production from plastic wastes by using gasification technologies. Moreover, this paper provides a detailed case study indicating exergetic sustainability aspects for hydrogen production from plastic wastes by applying plasma gasification whose data are taken from the literature. As a result of this case study, some exergetic sustainability indicators are studied for evaluation and comparison purposes. The exergetic sustainability index is found to be decreasing from 0.77 to 0.41 with the fact that exergetic efficiency drops from 0.43 to 0.28 while the environmental impact factor rises from 1.29 to 2.41 with the increase of waste exergy ratio from 0.56 to 0.70. Furthermore, plasma co‐gasification can be recommended as an environmentally‐benign solution for clean hydrogen production from plastic wastes. Highlights Plastic wastes is an important source of hydrogen. Gasification can efficiently be deployed for hydrogen production from plastic wastes. In order to evaluate potential gasification techniques, energetic, economic, environmental, and sustainability aspects should be considered. Plasma gasification appears to be more efficient and effective solution over other methods for higher amount of hydrogen production from plastic wastes.

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“…Waste exergy ratio (wer) 135‐137 :

italicwer goodbreak= \frac{(total exergy output by heat + total exerg y loss)}{total exergy input}

…”

Section: Analysis: Thermodynamic Approachmentioning

confidence: 99%

A review on converting plastic wastes into clean hydrogen via gasification for better sustainability

Midilli

Küçük

Haciosmanoglu

et al. 2021

Intl J of Energy Research

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“…Dincer and Zamfirescu [67] have suggested various methods for sustainable hydrogen production, including water splitting methods and extracting hydrogen with other materials than water. Ibrahim Dincer and Canan Acar have reviewed hydrogen production methods from renewable and non-renewable sources for suitable sustainability [67][68][69]. Ibrahim Dincer has also explore different green methods for hydrogen production [70].…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh reversible hydrogen storage in K and Ca decorated 4-6-8 biphenylene sheet

Mahamiya

Shukla

Chakraborty

2022

International Journal of Hydrogen Energy

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“…The CO 2 collection systems may be broadly categorized into three kinds: oxyfuel combustion, pre‐combustion, and post‐combustion. The oxyfuel technique utilizes pure and almost pure oxygen for burning, mainly generating CO 2 and water (H 2 O) 7,8 …”

Section: Introductionmentioning

confidence: 99%

An innovative hybrid system for the polygeneration of power, heat, and liquid carbon dioxide using solid oxide fuel cell/electrolyzer technology and oxyfuel power generation cycle

Ghorbani

Manesh

2022

Intl J of Energy Research

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Summary An innovative polygeneration structure is proposed based on the oxyfuel power generation (OPG) system integration with carbon dioxide (CO2) capture, CO2 power system, NH3/H2O absorption refrigeration (AR) unit, and organic Rankine power (ORP) cycle. In this regard, a combination of solid oxide electrolysis cell (SOEC) and solid oxide fuel cell (SOFC) is applied to produce the required pure oxygen for the OPG system. The proposed system simultaneously produces 7204 kmol/h hot water, 149.3 kmol/h liquid CO2, and 102.4 MW power in different cycles. Energy and exergy analyses are performed to evaluate the proposed system. The thermodynamic modeling and simulation of power and refrigeration cycles are performed in Aspen HYSYS software, and verified with high accuracy. Also, an integrated SOEC/SOFC simulation has been done using developed computer code in MATLAB programming. The overall electrical efficiency and the AR coefficient of performance are calculated at 31.55% and 0.4803, respectively. In addition, the thermal and exergy efficiencies of the proposed system are 65.10% and 70.60%, respectively. The exergy analysis indicates the combustion chamber's highest exergy destruction with a share of 35.26%. In the next rank, the heat exchangers (26.42%) and turbines (16.98%) have the largest share of degraded exergy among other devices. The sensitivity analysis demonstrates that when the oxygen productivity increases from 9050 to 9275 kg/h, the electrical efficiency in the total integrated structure and the liquid CO2 productivity rise to 34.57% and 6480 kg/h, respectively. Also, by increasing the natural gas entering the proposed structure from 2375 to 2550 kg/h, the exergy efficiency of the structure increases to 71.19% and its thermal efficiency decreases to 58.70%. Highlights A novel polygeneration system to produce power, liquid CO2, and heat is introduced. Integration of oxyfuel/ORC/CO2 power plants and absorption cooling unit is applied. A solid oxide fuel cell/electrolyzer technology is used to produce pure oxygen. The electrical and exergy efficiencies of the overall system are 31.55% and 70.60%. The exergy analysis indicates the combustion chamber has the highest exergy destruction.

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A comprehensive review on hydrogen production from coal gasification: Challenges and Opportunities

Cited by 271 publications

References 112 publications

A review on converting plastic wastes into clean hydrogen via gasification for better sustainability

A review on converting plastic wastes into clean hydrogen via gasification for better sustainability

Ultrahigh reversible hydrogen storage in K and Ca decorated 4-6-8 biphenylene sheet

An innovative hybrid system for the polygeneration of power, heat, and liquid carbon dioxide using solid oxide fuel cell/electrolyzer technology and oxyfuel power generation cycle

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