Development of CuFeMnAlO4+δ oxygen carrier with high attrition resistance and 50-kWth methane/air chemical looping combustion tests

Siriwardane, Ranjani; Riley, Jarrett; Benincosa, William; Bayham, Samuel; Bobek, Michael; Straub, Douglas; Weber, Justin

doi:10.1016/j.apenergy.2021.116507

Cited by 16 publications

(15 citation statements)

References 38 publications

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“…Iron ore can also be used directly as an oxygen carrier [23], which would simplify the supply chain for the iron and steel facility, since oxygen carrier makeup could be supplied from the iron ore already brought in to feed the shaft furnace. Many other oxygen carriers bear consideration, both natural and synthetic, and typically contain some combination of Cu, Mn, Fe, Co, and Ni species [24,44,45]. The choice of oxygen carrier will impact the heat balance of the PCL units as well as the flue gas purity, based on the reactivity of the oxygen carrier with the fuel.…”

Section: Discussionmentioning

confidence: 99%

Pressurized Chemical Looping for Direct Reduced Iron Production: Carbon Neutral Process Configuration and Performance

2022

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To achieve net-zero iron and steel production by 2050, many iron and steel producers are turning to direct reduced iron (DRI)—electric arc furnace (EAF) steel production as an opportunity to achieve significant CO2 emissions reductions relative to current levels. However, additional innovations are required to close the gap between DRI and net-zero steel. Pressurized chemical looping-DRI (PCL-DRI) is a novel technology explored to meet this target, in which the reformer firebox and fired process gas heaters are replaced with PCL combustion units. Captured CO2 is conditioned and compressed for pipeline transportation and storage/utilization. The performance of two different PCL-DRI configurations relative to traditional DRI processes was explored via process simulation: a Midrex-type process and an Energiron-type process. The PCL-DRI processes were shown to have equivalent or lesser total fuel consumption (8% reduction) compared to the base cases, and greater process water production (170–260% increase), with minimal or no loss in thermal efficiency. PCL-DRI is a strong competitor to alternative methods of reaching net-zero DRI due to lower energy penalties for carbon capture, no required changes to stream chemistry in or out of the EAF, and no requirement for hydrogen infrastructure.

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Section: Discussionmentioning

confidence: 99%

Pressurized Chemical Looping for Direct Reduced Iron Production: Carbon Neutral Process Configuration and Performance

2022

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“…Hasil ini menunjukkan bahwa terjadinya penurunan nilai scf ini yang kemungkinan disebabkan karena terjadinya pembakaran yang semakin sempurna dengan nilai AFR semakin besar, sehingga mass flow rate dari syngas semakin besar, yang mengakibatkan waktu konsumsi yang diperlukan dari minyak premium juga akan semakin lama. Sehingga dari hasil ini membuktikan bahwa konsumsi minyak akan menurun, dan mengakibatkan nilai scf terus menurun dengan bertambahnya nilai AFR pada penelitian [21], [22].…”

Section: Gambar 6 Pengaruh Afr Gasifikasi Terhadap Nilai Scfunclassified

Effect of Air Fuel Ratio to Quality of Municipal Solid Waste Using Downdraft Gasification

Amrullah¹,

Oktaviananda²

2022

r.e.m

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Gasifikasi menggunakan limbah padat kota (MSW) berdampak pada peningkatan kualitas lingkungan dan peningkatan pasokan listrik untuk daerah-daerah yang sulit dijangkau, khususnya di Indonesia. Namun proses gasifikasi membutuhkan proses pengujian kualitas terlebih dahulu agar dapat menghasilkan produk syngas dan kelistrikan yang maksimal. Maka dalam penelitian ini dilakukan proses pengujian pengaruh variasi Air Fuel Ratio (AFR) terhadap kualitas proses gasifikasi (Cold Gas Efficiency (CGE), Carbon Conversion Efficiency (CCE), dan specific fuel consumption (sfc) atau konversi konsumsi spesifik). Penelitian dilakukan dengan melakukan proses gasifikasi dengan tipe downdraft pada nilai AFR 0,5; 0,51; 0,53; 0,54; 0,55. Hasil penelitian ini menunjukkan adanya peningkatan nilai syngas seiring dengan peningkatan nilai AFR. Sedangkan nilai CGE meningkat seiring dengan meningkatnya AFR proses gasifikasi MSW. Peningkatan terjadi dari 9 menjadi 13%, meskipun hasil ini masih sangat rendah. Di sisi lain, CCE juga mengalami peningkatan dengan meningkatnya AFR gasifikasi MSW. Peningkatan nilai terlihat dari 33-43%. Hasil ini juga masih tergolong kecil, artinya efisiensi konversi karbon pada proses ini sangat rendah. Pada akhirnya, dapat dilihat bahwa nilai scf menurun dengan meningkatnya AFR. Penurunan yang didapat adalah dari 5,3 menjadi 2.

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“…Dalam kasus ini, trend tersebut terjadi karena semakin besar mass flow rate dari syngas sehingga waktu yang diperlukan untuk mengkonsumsi minyak premium semakin lama. Hal ini berarti konsumsi dari minyak juga berkurang, mengakibatkan nilai SCF terus menurun dengan bertambahnya AFR (Siriwardane et al, 2021).…”

Section: 𝐴𝐹𝑅 =unclassified

Karakterisasi Proses Gasifikasi Menjadi Listrik Berbahan Baku Sampah Padat Perkotaan Menggunakan Reaktor Tipe Downdraft Di Provinsi Nusa Tenggara Barat

Amrullah¹,

Rohman²,

Oktaviananda³

et al. 2022

JPPL

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Indonesia is currently experiencing the problem of Municipal Solid Waste (MSW), energy and environmental crisis. Gasification by electric generator is the solution. This study about the design and characterization of the gasification reactor with MSW feed. This research was conducted by examining the effect of gasification temperature (550, 600, 650, 700, 750, 800, 850oC) and Air Fuel Ratio variations (0,5; 0,51; 0,53; 0,54; and 0,55). The variabel tes of temperature variations is syngas, FC, CGE,CCE, and scf. The AFR evaluated syngas and SCF. The result showed an increase the syngas levels with the increasing the gasification temperature, except CO2. The FC value increased(71% to 74%) and The CGE increases (77 to 97%). The CCE increases from 69% to 78% (550-650oC) and decreases again to 66% (850oC), and Scf decreased (4.5-0.5 kg/kWh). In the AFR variation, syngas levels increase with increasing AFR, but scf decreased (5.3 to 2).

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Development of CuFeMnAlO4+δ oxygen carrier with high attrition resistance and 50-kWth methane/air chemical looping combustion tests

Cited by 16 publications

References 38 publications

Pressurized Chemical Looping for Direct Reduced Iron Production: Carbon Neutral Process Configuration and Performance

Pressurized Chemical Looping for Direct Reduced Iron Production: Carbon Neutral Process Configuration and Performance

Effect of Air Fuel Ratio to Quality of Municipal Solid Waste Using Downdraft Gasification

Karakterisasi Proses Gasifikasi Menjadi Listrik Berbahan Baku Sampah Padat Perkotaan Menggunakan Reaktor Tipe Downdraft Di Provinsi Nusa Tenggara Barat

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