Industrial Perspective on Hydrogen Purification, Compression, Storage, and Distribution

Peschel, Andreas

doi:10.1002/fuce.201900235

Cited by 47 publications

(16 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An in-depth insight into optimal energy system layout and conditions for economic feasibility was provided by Morgenthaler et al (2020). Syngas, as an important intermediate of the chemical industry, is neither transported nor directly sold as a final product, in contrast to H 2 (Peschel, 2020). This might be the reason that only one life cycle assessment (LCA) study was found analyzing solely the production of syngas so far (Sternberg and Bardow, 2016).…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Power-to-Syngas: Comparing High Temperature Co-Electrolysis and Steam Methane Reforming

et al. 2020

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Power-to-Syngas: Comparing High Temperature Co-Electrolysis and Steam Methane Reforming

et al. 2020

View full text Add to dashboard Cite

“…Recently, many studies concern the comparison of the economical aspects of storing hydrogen in LOHC compared to compresses gas or liquefied H 2 [74,75]. Some recent studies [43,76] conclude that if the heat needed for dehydrogenation is sustainably managed (e.g., waste heat), dibenzyltoluene or toluene are systems of choice both in terms of efficiency and costs.…”

Section: Economical Studiesmentioning

confidence: 99%

Liquid Organic Hydrogen Carriers or Organic Liquid Hydrides: 40 Years of History

Meille

Pitault

2021

Reactions

View full text Add to dashboard Cite

The term LOHC stands for Liquid Organic Hydrogen Carriers. The term has been so well accepted by the scientific community that the studies published before the existence of this name are not very visible. In this mini-review, we have tried to rehabilitate various studies that deserve to be put back in the spotlight in the present context. Studies indeed began in the early 1980s and many publications have compared the use of various organic carriers, various catalysts and reactors. Recent reviews also include the economic aspects of this concept.

show abstract

“…Industrial practice specifies a deoxygenation reactor (Peschel, 2020) which catalytically combines hydrogen with oxygen to generate additional water in an exothermic reaction. In this work the inlets are fed at electrolysis temperature of 60 °C before entering the adiabatic reactor and reducing oxygen concentration to 1 ppmV, also consuming hydrogen and generating additional water vapour in line with the reaction:…”

Section: Hydrogen Purification (H 2 -Fed Cell Only)mentioning

confidence: 99%

“…Drying the hydrogen can be done in a number of ways involving condensation, temperature or pressure swing adsorption, molecular sieve adsorbents or a combination of options (Ligen et al, 2020;Peschel, 2020). Increased interest in the energy requirements of this step result from the efficiency concerns of green hydrogen production and use.…”

Section: Hydrogen Purification (H 2 -Fed Cell Only)mentioning

confidence: 99%

Electrochemical Ammonia: Power to Ammonia Ratio and Balance of Plant Requirements for Two Different Electrolysis Approaches

2021

View full text Add to dashboard Cite

Electrochemical ammonia generation allows direct, low pressure synthesis of ammonia as an alternative to the established Haber-Bosch process. The increasing need to drive industry with renewable electricity central to decarbonisation and electrochemical ammonia synthesis offers a possible efficient and low emission route for this increasingly important chemical. It also provides a potential route for more distributed and small-scale ammonia synthesis with a reduced production footprint. Electrochemical ammonia synthesis is still early stage but has seen recent acceleration in fundamental understanding. In this work, two different ammonia electrolysis systems are considered. Balance of plant (BOP) requirements are presented and modelled to compare performance and determine trade-offs. The first option (water fed cell) uses direct ammonia synthesis from water and air. The second (hydrogen-fed cell), involves a two-step electrolysis approach firstly producing hydrogen followed by electrochemical ammonia generation. Results indicate that the water fed approach shows the most promise in achieving low energy demand for direct electrochemical ammonia generation. Breaking the reaction into two steps for the hydrogen fed approach introduces a source of inefficiency which is not overcome by reduced BOP energy demands, and will only be an attractive pathway for reactors which promise both high efficiency and increased ammonia formation rate compared to water fed cells. The most optimised scenario investigated here with 90% faradaic efficiency (FE) and 1.5 V cell potential (75% nitrogen utilisation) gives a power to ammonia value of 15 kWh/kg NH3 for a water fed cell. For the best hydrogen fed arrangement, the requirement is 19 kWh/kg NH3. This is achieved with 0.5 V cell potential and 75% utilisation of both hydrogen and nitrogen (90% FE). Modelling demonstrated that balance of plant requirements for electrochemical ammonia are significant. Electrochemical energy inputs dominate energy requirements at low FE, however in cases of high FE the BOP accounts for approximately 50% of the total energy demand, mostly from ammonia separation requirements. In the hydrogen fed cell arrangement, it was also demonstrated that recycle of unconverted hydrogen is essential for efficient operation, even in the case where this increases BOP energy inputs.

show abstract

Industrial Perspective on Hydrogen Purification, Compression, Storage, and Distribution

Cited by 47 publications

References 16 publications

Life Cycle Assessment of Power-to-Syngas: Comparing High Temperature Co-Electrolysis and Steam Methane Reforming

Life Cycle Assessment of Power-to-Syngas: Comparing High Temperature Co-Electrolysis and Steam Methane Reforming

Liquid Organic Hydrogen Carriers or Organic Liquid Hydrides: 40 Years of History

Electrochemical Ammonia: Power to Ammonia Ratio and Balance of Plant Requirements for Two Different Electrolysis Approaches

Contact Info

Product

Resources

About