Techno-economic evaluation of polygeneration system for olefins and power by using steel-mill off-gases

Lee, Jeong Keun; Shin, Sunkyu; Kwak, Geunjae; Lee, Minkyung; Lee, In‐Beum; Yoon, Young-Seek

doi:10.1016/j.enconman.2020.113316

Cited by 15 publications

(3 citation statements)

References 32 publications

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“…A similar study showed that the cost of oxy-combustion CO 2 capture in the cement production process was effectively reduced due to the generation of hydrogen products and byproduct oxygen via the electrolysis of water [16]. For the economic evaluation of the polygenration system for olefins from industrial off-gas such as coke oven gas or hydrogen, coke oven gas is more competitive than hydrogen due to the feed price [17]. The CaL cluster treating the flue gas from multiple industrial emitters could reduce the cost of capturing CO 2 by connecting a cluster of industrial sites with significant heat demands with a decarbonized cement production process using the CaL system [18].…”

Section: Introductionmentioning

confidence: 99%

Process Design and Techno-ECONOMIC Evaluation of a Decarbonized Cement Production Process Using Carbon Capture and Utilization

Jian

Chou

et al. 2023

Processes

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To address a decarbonized cement production process (DCPP), a calcium looping process is connected to an industrial cement production process (CPP) for capturing CO2 by 93.5~96%. Since the captured CO2 purity is up to 99.9 wt%, the carbon capture and utilization (CCU) process is connected to generate the additional products of urea and methanol. An integration of DCPP and CCU, named the DCPP-based polygeneration system, is being developed for three scenarios. To meet the power demand for producing high-purity hydrogen and oxygen, Scenario 1 adopts water electrolysis and the full green electricity grid; Scenario 2 adopts the Cu-Cl thermochemical cycle and the partial green electricity grid; and Scenario 3 adopts water electrolysis and the heat recovery steam generator (HRSG). Through the techno-economic analysis and comparisons, the CO2 avoided costs of three scenarios are estimated between 16.53 and 21.42 USD/ton, which are lower than the conventional DCPP of around 40 USD/ton. It is due to the fact that the polygeneration scheme could reduce the LCOP (levelized cost of producing 1 ton of clinker) due to the production of valorized products. It is noted that Scenario 2 is superior to other scenarios since the RenE2P cost in Scenario 2 is lower than it is in Scenario 1 and the captured CO2 rate in Scenario 2 is lower than it is in Scenario 3.

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Section: Introductionmentioning

confidence: 99%

Process Design and Techno-ECONOMIC Evaluation of a Decarbonized Cement Production Process Using Carbon Capture and Utilization

Jian

Chou

et al. 2023

Processes

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“…According to an International Energy Agency report, around 30% of industrial CO 2 emissions came from the steel industry ( Kim et al, 2019 ). The steel mill generates various flue gases such as coke oven gas (COG), blast furnace gas (BFG), and Lintz-Donawitz gas (LDG) ( Lee et al, 2020 ). In particular, COG has a high H 2 content of nearly 60% ( Moral et al, 2022 ) ( Table 1 ).…”

Section: Introductionmentioning

confidence: 99%

Real flue gas CO2 hydrogenation to formate by an enzymatic reactor using O2- and CO-tolerant hydrogenase and formate dehydrogenase

Cha,

Lee,

Jeon

et al. 2023

Front. Bioeng. Biotechnol.

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It is challenging to capture carbon dioxide (CO2), a major greenhouse gas in the atmosphere, due to its high chemical stability. One potential practical solution to eliminate CO2 is to convert CO2 into formate using hydrogen (H2) (CO2 hydrogenation), which can be accomplished with inexpensive hydrogen from sustainable sources. While industrial flue gas could provide an adequate source of hydrogen, a suitable catalyst is needed that can tolerate other gas components, such as carbon monoxide (CO) and oxygen (O2), potential inhibitors. Our proposed CO2 hydrogenation system uses the hydrogenase derived from Ralstonia eutropha H16 (ReSH) and formate dehydrogenase derived from Methylobacterium extorquens AM1 (MeFDH1). Both enzymes are tolerant to CO and O2, which are typical inhibitors of metalloenzymes found in flue gas. We have successfully demonstrated that combining ReSH- and MeFDH1-immobilized resins can convert H2 and CO2 in real flue gas to formate via a nicotinamide adenine dinucleotide-dependent cascade reaction. We anticipated that this enzyme system would enable the utilization of diverse H2 and CO2 sources, including waste gases, biomass, and gasified plastics.

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“…The authors show that integrating methanol production may improve energy efficiency and is economically viable. Lee et al expanded this techno-economic assessment by including methanol-to-olefin processes as a subsequent process step. However, the production of ethanol and longer-chain hydrocarbons was not economical.…”

Section: Introductionmentioning

confidence: 99%

What Shall We Do with Steel Mill Off-Gas: Polygeneration Systems Minimizing Greenhouse Gas Emissions

Kleinekorte

Leitl

Zibunas

et al. 2022

Environ. Sci. Technol.

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Both the global steel and chemical industries contribute largely to industrial greenhouse gas (GHG) emissions. For both industries, GHG emissions are strongly related to the consumption of fossil resources. While the chemical industry often releases GHGs as direct process emissions, steel mills globally produce 1.78 Gt of off-gases each year, which are currently combusted for subsequent heat and electricity generation. However, these steel mill off-gases consist of high value compounds, which also can be utilized as feedstock for chemical production and thereby reduce fossil resource consumption and thus GHG emissions. In the present work, we determine climate-optimal utilization pathways for steel mill off-gases. We combine a nonlinear, disjunctive model of the steel mill off-gas separation system with a large-scale linear model of the chemical industry to perform environmental optimization. The results show that the climate-optimal utilization of steel mill off-gases depends on electricity’s carbon footprint: For the current electricity grid mix, methane, hydrogen, and synthesis gas are recovered as feedstocks for conventional chemical production and enable a methanol-based chemical industry. For low electricity footprints in the future, the separation of steel mill off-gases supports CO2-based production processes in the chemical industry, supplying up to 30% of the required CO2. By coupling the global steel and chemical industry, industrial GHG emissions can be reduced by up to 79 Mt CO2-equivalents per year. These reductions provide up to 4.5% additional GHG savings compared to a stand-alone optimization of the two industries, showing a limited potential for this industrial symbiosis.

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Techno-economic evaluation of polygeneration system for olefins and power by using steel-mill off-gases

Cited by 15 publications

References 32 publications

Process Design and Techno-ECONOMIC Evaluation of a Decarbonized Cement Production Process Using Carbon Capture and Utilization

Process Design and Techno-ECONOMIC Evaluation of a Decarbonized Cement Production Process Using Carbon Capture and Utilization

Real flue gas CO2 hydrogenation to formate by an enzymatic reactor using O2- and CO-tolerant hydrogenase and formate dehydrogenase

What Shall We Do with Steel Mill Off-Gas: Polygeneration Systems Minimizing Greenhouse Gas Emissions

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