250 kWth high pressure pilot demonstration of the syngas chemical looping system for high purity H2 production with CO2 capture

Hsieh, Tien-Lin; Xu, Dikai; Zhang, Yitao; Nadgouda, Sourabh G.; Wang, Dawei; Chung, Cheng; Pottimurthy, Yaswanth; Guo, Mengqing; Chen, Yu‐Yen; Xu, Mingyuan; He, Peigang; Fan, Liang‐Shih; Tong, Andrew

doi:10.1016/j.apenergy.2018.09.104

Cited by 78 publications

(44 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concept of the counter-current moving-bed reactor confirmed that nearly pure H2 could be produced with full syngas conversion to CO2 and H2O. Following these outcomes, a 250 kWth pressurized syngas chemical looping pilot plant has been commissioned and successfully demonstrated the concept as in Hsieh et al [109]. The first operation of the SCL pilot plant was completed at 10 bar and resulted in syngas and OC conversion close to the thermodynamic limits validating the benefit of using the moving-bed configuration in the reducer and the oxidizer [109].…”

Section: Moving-bed Reactormentioning

confidence: 79%

“…Following these outcomes, a 250 kWth pressurized syngas chemical looping pilot plant has been commissioned and successfully demonstrated the concept as in Hsieh et al [109]. The first operation of the SCL pilot plant was completed at 10 bar and resulted in syngas and OC conversion close to the thermodynamic limits validating the benefit of using the moving-bed configuration in the reducer and the oxidizer [109]. Yet, a technoeconomic assessment taking in consideration the results from the pilot demonstration campaign is needed to confirm the potential of the moving bed in bringing down the cost of hydrogen production through this process.…”

Section: Moving-bed Reactormentioning

confidence: 99%

“…16. A conceptual design of syngas chemical looping pilot unit with a counter-current moving bed reducer and oxidizer reactors [109], "Adapted with permission, Copyright (2018) Elsevier BV".…”

Section: Moving-bed Reactormentioning

confidence: 99%

See 2 more Smart Citations

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Osman

Khan

Zaabout

et al. 2021

Fuel Processing Technology

View full text Add to dashboard Cite

Chemical looping has great potential for reducing the energy penalty and associated costs of CO2 capture from fossil fuel-based power and chemical production while maintaining high efficiency. However, pressurized operation is a prerequisite for maximizing energy efficiency in most proposed chemical looping configurations, introducing significant complexities related to system design, operation and scale-up. Understanding the effects of pressurization on chemical looping systems is therefore important for realizing the expected cost reduction of CO2 capture and speed up the industrial deployment of this promising class of technologies.This paper reviews studies that investigated three key aspects associated with pressurized operation of chemical looping processes. First, the effect of pressure on the kinetics of the various reactions involved in these processes was discussed. Second, the different reactor configurations proposed for chemical looping were discussed in detail, focusing on their suitability for pressurized operation and highlighting potential technical challenges that may hinder successful operation and scale-up. Third, techno-economic assessment studies for these systems were reviewed, identifying the process configuration and integration options that maximize the energy efficiency and minimize the costs of CO2 avoidance.Prominent conclusions from the review include the following. First, the frequently reported negative effect of pressure on reaction kinetics appears to be overstated, implying that pressurization is an effective way to intensify chemical looping processes. Second, no clear winner could be identified from the six pressurized chemical looping reactor configurations

show abstract

Section: Moving-bed Reactormentioning

confidence: 79%

Section: Moving-bed Reactormentioning

confidence: 99%

See 1 more Smart Citation

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Osman

Khan

Zaabout

et al. 2021

Fuel Processing Technology

View full text Add to dashboard Cite

show abstract

“…However, formation of FeO or Fe locally, where fuel concentration is high, cannot be excluded, although these would be re-oxidized in other zones. In processes for direct hydrogen production, these lower forms are desired, which can be accomplished by designing a fuel reactor where the fuel and oxygen carrier are in counter-current, [117], [118].…”

Section: Fe-based Materialsmentioning

confidence: 99%

11,000 h of chemical-looping combustion operation—Where are we and where do we want to go?

Lyngfelt

Brink

Langørgen

et al. 2019

International Journal of Greenhouse Gas Control

168

111

View full text Add to dashboard Cite

A key for chemical-looping combustion (CLC) is the oxygen carrier. The ultimate test is obviously the actual operation, which reveals if it turns to dust, agglomerates or loses its reactivity or oxygen carrier capacity. The CLC process has been operated in 46 smaller chemical-looping combustors, for a total of more than 11,000 h. The operation involves both manufactured oxygen carriers, with 70% of the total time of operation, and less costly materials, i.e. natural ores or waste materials. Among manufactured materials, the most popular materials are based on NiO with 29% of the operational time, Fe2O3 with 16% and CuO with 13%. Among the monometallic oxides there are also Mn3O4 with 1%, and CoO with 2%. The manufactured materials also include a number of combined oxides with 11% of operation, mostly calcium manganites and other combined manganese oxides. Finally, the natural ores and waste materials include ilmenite, FeTiO3 with 13%, iron ore/waste with 9% and manganese ore with 6%. In the last years a shift towards more focus on CuO, combined oxides and natural ores has been seen.A major difficulty with the scaling-up of a novel process is in the risk. First-of-itskind large-scale projects include risks of technical mistakes and unforeseen obstacles, leading to added costs or, in the worst case, failure. One way of addressing these risks is to focus on the heart of the process and build it with maximum flexibility for future use. A concept for maximum flexibility is the Multipurpose Dual Fluidized Bed (MDFB). Another is to find a suitable existing plant, e.g. a dual fluidized-bed thermal gasifier.With present emissions the global CO2 budget associated with a maximum temperature of 2ºC may be spent in around 20-25 years, whereas the CO2 budget for 1.5ºC is may be exhausted in 10 years. Thus, the need for both CO2 neutral fuels and negative emissions will become increasingly urgent as we are nearing or transgressing the maximum amount of CO2 that can be emitted without compromising the global climate agreement in Paris saying we must keep "well below" 2ºC and aim for a maximum of 1.5ºC. Thus, biomass may turn out to be a key fuel for Carbon Capture and Storage (CCS), because CO2-free power does not necessarily need CCS, but negative emissions will definitely need Bio-CCS.

show abstract

“…This concept greatly simplifies the reactor design and scale-up, but a coordinated cluster of reactors is required to achieve steady operation. Other reactor concepts proposed in the literature are the moving bed [14,15] and rotating bed reactor [16,17].…”

Section: Introductionmentioning

confidence: 99%

Mapping the operating performance of a novel internally circulating fluidized bed reactor applied to chemical looping combustion

Osman

Zaabout

Cloete

et al. 2020

Fuel Processing Technology

View full text Add to dashboard Cite

Chemical looping combustion is a promising technology for minimizing the energy penalty of CO2 capture. To accelerate the scale-up and commercialization of this technology for pressurized operation, the internally circulating reactor (ICR) was recently proposed. ICR integrates the two reactors, cyclones, loop seals and solids transport lines of the conventional chemical looping configuration into a single unit that simplifies design and operation. This work reports the ICR operating performance over a range of operating parameters applied to chemical looping combustion (CLC). The concept proved relatively simple to operate, allowing the oxygen-carrier circulation rate to be controlled over a wide range by varying the bed loading and the air reactor feed rate. Fully autothermal CLC operation was demonstrated as an illustration of the ease of ICR operation. Gas leakage between the two reactor chambers decreased strongly with decreasing solids loading, resulting in CO2 capture and purity up to 94% for the lowest bed loading. The data showed that significant room for further optimization of the solids transport ports in the reactor exists, which will further increase the CO2 separation performance. These results demonstrate the promise of ICR concept and provide valuable insights for the design of larger-scale units in future work.

show abstract

250 kWth high pressure pilot demonstration of the syngas chemical looping system for high purity H2 production with CO2 capture

Cited by 78 publications

References 26 publications

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

11,000 h of chemical-looping combustion operation—Where are we and where do we want to go?

Mapping the operating performance of a novel internally circulating fluidized bed reactor applied to chemical looping combustion

Contact Info

Product

Resources

About

250 kWth high pressure pilot demonstration of the syngas chemical looping system for high purity H2 production with CO2 capture

Cited by 78 publications

References 26 publications

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

11,000 h of chemical-looping combustion operation—Where are we and where do we want to go?

Mapping the operating performance of a novel internally circulating fluidized bed reactor applied to chemical looping combustion

Contact Info

Product

Resources

About

250 kWth high pressure pilot demonstration of the syngas chemical looping system for high purity H2 production with CO2 capture

11,000 h of chemical-looping combustion operation—Where are we and where do we want to go?