Packed Towers

Billet, Reinhard

doi:10.1002/3527605983

Cited by 120 publications

(65 citation statements)

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“…-A combined power cycle operating on locally produced gas comprising o 8 Siemens SGT-800 gas turbine generator sets each feeding a heat recovery steam generator (4 identical blocks each block containing 2 gas turbines, 2 heat recovery steam generators (HRSG) and 1 steam turbine) as depicted in Figure 2 o A steam cycle with 4 back pressure steam turbine generator sets and 1 common condensing steam turbine (CCS version) 1 Natural gas combined cycle equipped with capture and storage of CO2.…”

Section: The Plant Featuresmentioning

confidence: 99%

Integrating a full carbon capture scheme onto a 450MWe NGCC electric power generation hub for offshore operations: Presenting the Sevan GTW concept

et al. 2009

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Abstract:Sevan Marine and Siemens have developed a floating power plant -entitled Sevan GTW (gas-to-wire) -based on Sevan's cylindrical platform and Siemens' SCC-800 combined cycle, and SINTEF has adapted a post-combustion CO 2 -capture process for on-board integration including compression and pre-conditioning of the CO 2 . Main emphasis has been placed on developing an optimised conceptual design within the structural constraints, and assessing how efficient the capture unit may be operated in * Manuscriptconsideration of the dynamic behaviour induced by the sea on the absorber and desorber columns via the floating carrier. The rational behind this technology selection is the urgency in making appropriate steps for a quick start for remote power generation at sea with the inclusion of CCS to serve offshore oil and gas operations. This calls for modular power blocks made up by high efficient combined power cycles with post-combustion exhaust-gas cleaning. From this point of view a system with four absorption columns and one desorber unit has been determined based on structured packing material.The capture process has been integrated with the power cycle in due consideration of the sea forces. It is shown that a permanent tilt becomes more important than periodic movements provided the harmonic periods are kept within a certain level (< 20 seconds). Operational conditions and constraints vis-à-vis movements and trimming of the floater have been addressed and discussed with reference to available literature. This also includes the liquid hold-up and gas-liquid interfacial area in the absorption columns linked with tilting. Optimisation reveals that a reboiler duty of 3.77 GJ/tonne CO 2 would result in the lowest capture cost. With a fuel penalty of 9% the Sevan GTW concept presents itself as a realistic concept deemed to be within reach today.

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Section: The Plant Featuresmentioning

confidence: 99%

Integrating a full carbon capture scheme onto a 450MWe NGCC electric power generation hub for offshore operations: Presenting the Sevan GTW concept

et al. 2009

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“…A change of ±40% in the effective area induces changes from 1.5% to 3.2% in the CO 2 molar fraction value at the absorber outlet. From our experience and from the discrepancies observed in the literature from one source to another, an uncertainty between ±10% and more certainly of ±20% in the effective area determination is typical (see previously cited sources and Billet, 1995). This means that, to make sure the required performance is achieved, one must Sensitivity of the CO 2 capture cost toward economic parameters.…”

Section: Process Simulations and Economic Evaluationmentioning

confidence: 99%

“…The latter varied over a range from 1 to 7 around a reference value deduced from the correlation developed in Billet (1995) for similar random packing. For all tested values, the CO 2 molar fraction at the absorber outlet happens to vary only very little, from 2.2 to 2.3%.…”

Section: Mass Transfer Parameters Sensitivity Analysismentioning

confidence: 99%

“…The efficiency, which is further used to determine the height of the column, is much more difficult to determine. The overall mass transfer coefficient, K G a, often linked to HETP or NUT values for distillation applications (Billet, 1995), is commonly given, for absorption with chemical reaction, by five parameters (Danckwerts, 1970). Three parameters correspond to mass transfer performances linked with gas/liquid operating conditions and packing; the liquid-side mass transfer coefficient, k L , the gas-side mass transfer coefficient, k G , and the effective area, a e .…”

Section: Simulations For Absorber Designmentioning

confidence: 99%

“…The determination of the height is made using Aspen calculations with IFPEN in-house correlations for mass transfer parameters. Mass transfer correlations are based on either IFPEN internal data or literature data (Alix and Raynal, 2009;Nakov et al, 2007;Billet, 1995). All the calculations are carried out for a constant CO 2 capture rate of 90%.…”

Section: Simulations For Absorber Designmentioning

confidence: 99%

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CO₂Capture Cost Reduction: Use of a Multiscale Simulations Strategy for a Multiscale Issue

Raynal

Gomez

Caillat

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Re´duction du couˆt du captage de CO 2 : mise en oeuvre d'une strate´gie de simulations multi-e´chelle pour un proble`me multi-e´chelles -Le captage et le stockage de CO 2 est un moyen important en vue de la re´duction des e´missions de CO 2 (International Energy Agency, 2009). Les proce´de´s de captage en post-combustion utilisant des amines sont conside´re´s parmi les options pre´fe´re´es pour le CSC (Captage et Stockage du Carbone). Cependant, le couˆt du CO 2 e´vite´est tre`s important et doit eˆtre re´duit. Cet article a pour objectif de montrer que la combinaison de diffe´rents outils de simulations re´alise´es a`diffe´rentes e´chelles permet une analyse fine des couˆts du CO 2 et des parame`tres associe´s responsables de ces couˆts a`diffe´rentes e´chelles. Il est tout d'abord montre´, a`partir d'une analyse technico-e´conomique a`l'e´chelle globale du proce´de´, que les couˆts d'investissements repre´sentent pre`s de la moitie´du couˆt du CO 2 total. En se focalisant sur ce dernier couˆt, une analyse de sensibilite´base´e sur des simulations Aspen a`l'e´chelle interme´diaire de l'absorbeur, permet d'identifier les parame`tres cle´s re´gissant le transfert de matie`re et le dimensionnement de la colonne. On montre que le parame`tre le plus important est l'aire interfaciale, les coefficients de transfert de masse en phase gaz et en phase liquide n'ayant que tre`s peu d'influence. Enfin, des simulations CFD (Computational Fluid Dynamics) re´alise´es a`grande et petite e´chelles permettent d'orienter l'optimisation du design des colonnes via, d'une part, l'e´tude de l'interaction entre distributeurs et lit de garnissage, et d'autre part, la de´termination a`l'e´chelle locale de la perte de charge ou de parame`tres de transfert de masse. Une discussion porte sur l'utilisation couple´e de ces diffe´rents moyens de simulations qui permettront a`terme d'aller plus loin dans le de´veloppement de technologies et la re´duction des couˆts de captage du CO 2 .Abstract -CO 2 Capture Cost Reduction: Use of a Multiscale Simulations Strategy for a Multiscale Issue -Carbon Capture and Storage (CCS) is one important option for CO 2 mitigation (International Energy Agency, 2009). Post-combustion capture processes using amines are considered one of the preferred options for CCS. However, the cost of avoided CO 2 is very large and must be reduced. The present article aims to show that combining different simulation tools used on different scales makes possible a fine analysis of CO 2 capture costs and the associated parameters responsible for these costs on different scales. It is first shown, from a macro-scale techno-economic analysis, that investments represent about one half of the total CO 2 cost. Focusing on this cost, a sensitivity analysis, via Aspen calculations performed on a meso-column scale, enables one to identify key mass-transfer parameters that control absorption column design. It is shown that the most important mass-transfer parameter is the interfacial area, the gas and liquid mass transfer coeffi...

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Absorption, 2. Design of Systems and Equipment

Schmidt

Masurel

Linicus

et al. 2019

Ullmann's Encyclopedia of Industrial Chemistry

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Packed Towers

Cited by 120 publications

References 0 publications

Integrating a full carbon capture scheme onto a 450MWe NGCC electric power generation hub for offshore operations: Presenting the Sevan GTW concept

Integrating a full carbon capture scheme onto a 450MWe NGCC electric power generation hub for offshore operations: Presenting the Sevan GTW concept

CO₂Capture Cost Reduction: Use of a Multiscale Simulations Strategy for a Multiscale Issue

Absorption, 2. Design of Systems and Equipment

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Packed Towers

Cited by 120 publications

References 0 publications

Integrating a full carbon capture scheme onto a 450MWe NGCC electric power generation hub for offshore operations: Presenting the Sevan GTW concept

Integrating a full carbon capture scheme onto a 450MWe NGCC electric power generation hub for offshore operations: Presenting the Sevan GTW concept

CO2Capture Cost Reduction: Use of a Multiscale Simulations Strategy for a Multiscale Issue

Absorption, 2. Design of Systems and Equipment

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CO₂Capture Cost Reduction: Use of a Multiscale Simulations Strategy for a Multiscale Issue