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- Ali, Hassan, et al.
(author)
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Cost estimation of heat recovery networks for utilization of industrial excess heat for carbon dioxide absorption
- 2018
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In: International Journal of Greenhouse Gas Control. - : Elsevier BV. - 1750-5836. ; 74, s. 219-228
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Journal article (peer-reviewed)abstract
- The absorption of CO 2 using solvents (e.g., amines) is considered a state-of-the-art, albeit energy-intensive process for CO 2 capture. While it is generally recognized that the utilization of waste heat has potential to reduce the energy-associated costs for CO 2 capture, the cost of waste heat recovery is seldom quantified. In this work, the cost of heat-collecting steam networks for waste heat recovery for solvent regeneration is estimated. Two types of networks are applied to waste heat recovery from the flue gases of four process industries (cement, silicon, iron & steel, and pulp & paper) via a heat recovery steam generator (HRSG). A novel approach is presented that estimates the capital and operational expenditures for waste heat recovery from process industries. The results show that the overall cost (CAPEX + OPEX) of steam generated from one hot flue gas source is in the range of 1.1–4.1 €/t steam. The cost is sensitive to economic parameters, installation factors, the overall heat transfer coefficient, steam pressure, and to the complexity of the steam network. The cost of steam from an existing natural gas boiler is roughly 5–20-times higher than that of steam generated from recovered waste heat. The CAPEX required to collect the heat is the predominant factor in the cost of steam generation from waste heat. The major contributor to the CAPEX is the heat recovery steam generator, although the length of the steam pipeline (when heat is collected from two sources or over long distances) is also important for the CAPEX.
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| 2. |
- Òsk Gardarsdòttir, Stefanìa, 1987, et al.
(author)
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Investment costs and CO2 reduction potential of carbon capture from industrial plants – A Swedish case study
- 2018
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In: International Journal of Greenhouse Gas Control. - : Elsevier BV. - 1750-5836. ; 76, s. 111-124
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Journal article (peer-reviewed)abstract
- In this work, the investment required to apply CO2capture to large-scale industrial sources is assessed and discussed in a case study of Sweden - a highly industrialized region with relative proximity to large and well-documented storage sites in the Norwegian North Sea. The Swedish process industry is characterized by a large share of biogenic emissions, and therefore has a considerable Bio-Energy with Carbon Capture and Storage (BECCS) potential. The capital cost for CO2capture is estimated for a standard MEA-based CO2absorption process. The CO2absorption process is applied to several industries – pulp and paper, oil and gas, steel, cement and chemical production – and dimensioned using process modeling. The equipment cost is subsequently estimated using a detailed individual factor estimation method. The capture costs are compared to estimates of the cost for transport and storage.
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| 3. |
- Skagestad, R., et al.
(author)
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A Case Study of Partial Capture of CO 2 From a Pulp Mill – The CO 2 Capture Cost
- 2018
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In: GHGT 2018 - 14th International Conference on Greenhouse Gas Control Technologies.
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Conference paper (peer-reviewed)abstract
- This work presents a detailed cost estimation of carbon capture from a modern kraft pulp mill. Both the lime kiln and the recovery boiler have been studied as CO2 sources by using several alternatives for suppling steam to to power the capture unit. The results show that a considerably lower specific capture cost can be achieved with partial capture of CO2. In partial pressure the fraction of CO2 that is captured is controlled by the amount of available energy at “low” cost. The cost of partial capture and compression of CO2 to 110 bar resulted in 41 €/t compared to 56 €/t CO2 captured for a full capture case. The cost for electricity, including subsidies for renewable electricity generation, and steam is important to the results.
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