Benchmarking the Timmins Process – a novel approach for low energy pre‐combustion carbon capture in IGCC flowsheets

Hallmark, Bart; Parra-Garrido, Julian; Murdoch, Andrew; Salmon, Ian; Hodrien, Chris

doi:10.1002/cjce.22746

Cited by 4 publications

(3 citation statements)

References 21 publications

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“…CO 2 is then separated from H 2 before it is combusted in a gas turbine to generate power. [ 109 ] Since the CO 2 concentration and pressure is higher in the output compared to post‐combustion, the operating costs are lower, but the capital investment still remains high. [ 110 ] To overcome high investment costs, PI offers some solutions.…”

Section: Process Intensification and Catalysismentioning

confidence: 99%

Process intensification connects scales and disciplines towards sustainability

Boffito

Rivas

2020

Can J Chem Eng

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Process intensification (PI) has been established as a cluster of technologies able to produce more with less. While scientists around the globe advocate for new semantics that are increasingly tied to the notion of sustainability, what does the literature data say about PI? A Vosviewer bibliometric map of PI displays it as closely linked to the subjects of design, optimization, gas-to-liquid technologies, mass transfer, catalysis, and kinetics. We analyze the relationship between PI and these subjects while identifying misconceptions about the intensifying potential of some of them, as is the case for process optimization. We provide examples and summarize the recent technological trends for all these cases. Finally, we provide an outlook on the future of PI in which we identify elements that will be key to accelerate the adoption of PI technologies at the commercial scale.

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Section: Process Intensification and Catalysismentioning

confidence: 99%

Process intensification connects scales and disciplines towards sustainability

Boffito

Rivas

2020

Can J Chem Eng

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“…Therefore, it becomes essential to cut down CO 2 emissions, especially from fossil‐fueled power plants . Researchers have proposed plenty of CO 2 capture technologies, such as IGCC, oxy‐fuel combustion, CO 2 capture by dry alkali metal‐based sorbents, the MEA method, chemical looping combustion, and the calcium looping process . The calcium looping process, using low‐cost limestone as a CO 2 sorbent, has drawn public and scientific interest and been considered to be one of the CO 2 capture technologies with the most potential .…”

Section: Introductionmentioning

confidence: 99%

Kinetic analysis of cyclic carbonation of carbide slag during chemical reaction‐controlled stage under fluidization conditions

Sun

Chen

et al. 2018

Can J Chem Eng

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Carbide slag, as a kind of typical industrial waste, was proposed as a CO2 sorbent in the calcium looping process. The CO2 capture performance of carbide slag was investigated in a bubbling fluidized bed reactor (BFBR) under fluidization conditions. A surface reaction‐controlled kinetic model was employed to describe the carbonation kinetics of carbide slag during the chemical reaction‐controlled stage. The results show that the values of k, tcrcs, and Xu, which respectively denote the reaction rate constant, duration time, and final carbonation conversion in the chemical reaction‐controlled stage, decrease with the cycle number, due to the sintering of the sorbents. The microstructure of calcined carbide slag leads to higher CO2 diffusion resistance in carbide slag than that in limestone, causing lower k and longer tcrcs compared with limestone. The larger BET areas and pore areas of calcined carbide slag provide additional surface for the reaction of CaO and CO2. Therefore, the Xu values of carbide slag are higher than those of limestone after 5 cycles. Reaction conditions have a significant effect on the carbonation process of carbide slag. 850–900 °C is the optimum temperature range for the calcination of carbide slag. The gas‐solid transfer is strengthened at a higher fluidization number, enhancing the CO2 capture of carbide slag. The pores of the larger particles are more easily blocked due to the formation of CaCO3 layer, and the Xu of the carbide slag with a larger particle size is lower.

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“…integrated with pre-combustion capture centred upon sour shift as shown inTable 1. However, there exist a 25 few of works on sweet shift as well, as shown inTable 2[11][12][13][14] .…”

mentioning

confidence: 99%

The implications of choice between sour and sweet shift on process design and operation of an IGCC power plant integrated with a dual-stage selexol unit

Zhang

Ahn

2019

Energy

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In this study, it was sought to design and evaluate two process configurations of an Integrated Gasification Combined Cycle (IGCC) integrated with a dual-stage Selexol unit in which they differ in that one IGCC is configured with sour shift and the other is based on sweet shift. Incorporating water gas shift reactors consuming vast amount of shift steam into an IGCC involves significant alternations to the associated steam cycle, in addition to simply changing the location of the H2S removal step around the shift reactors. It turned out that the sweet shift case would require approximately 4.6 times more shift steam than the sour shift case, as the syngas after H2S removal did not have much steam in it. However, the energy penalties incurred by the carbon capture integration were estimated almost identical regardless of the choice between the sour and sweet shift. This is because the sour shift case would also undergo considerable reduction in power generation at steam cycle due to water quenching. In both shift cases, the high and low temperature shift reactors were sized using the reaction rate models reported in literatures.

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Benchmarking the Timmins Process – a novel approach for low energy pre‐combustion carbon capture in IGCC flowsheets

Cited by 4 publications

References 21 publications

Process intensification connects scales and disciplines towards sustainability

Process intensification connects scales and disciplines towards sustainability

Kinetic analysis of cyclic carbonation of carbide slag during chemical reaction‐controlled stage under fluidization conditions

The implications of choice between sour and sweet shift on process design and operation of an IGCC power plant integrated with a dual-stage selexol unit

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