CO2 Capture and Development of an Advanced Pilot-Scale Cryogenic Separation and Compression Unit

Zanganeh, Kourosh E.; Shafeen, Ahmed; Salvador, Carlos Henrique

doi:10.1016/j.egypro.2009.01.035

Cited by 87 publications

(46 citation statements)

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“…In this case, the refrigeration energy penalty increases substantially, and CO 2 frost formation becomes highly possible, thereby threatening equipment safety [23]. Attention should thus be paid to raising the phase transition temperature of CO 2 to improve the cryogenic separation method and consequently avoid facility freezing problems and high energy penalty [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

et al. 2014

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Abstract:In this study, an improved CO 2 separation and purification system is proposed based on in-depth analyses of cryogenic separation and distillation theory as well as the phase transition characteristics of gas mixtures containing CO 2 . Multi-stage compression, refrigeration, and separation are adopted to separate the majority of the CO 2 from the gas mixture with relatively low energy penalty and high purity. Subsequently, the separated crude liquid CO 2 is distilled under high pressure and near ambient temperature conditions so that low energy penalty purification is achieved. Simulation results indicate that the specific energy consumption for CO 2 capture is only 0.425 MJ/kgCO 2 with 99.9% CO 2 purity for the product. Techno-economic analysis shows that the total plant investment is relatively low. Given its technical maturity and great potential in large-scale production, compared to conventional MEA and Selexol TM absorption methods, the cost of CO 2 capture of the proposed system is reduced by 57.2% and 45.9%, respectively. The result of this study can serve as a novel approach to recovering CO 2 from high CO 2 concentration gas mixtures.

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Section: Introductionmentioning

confidence: 99%

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

et al. 2014

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“…Commonly used porous solid supports are silica fume [2], zeolite [4], mesoporous silica [8,13,20], high-carbon fly ash [18], activated carbon [27] and hydrotalcyte [28]. However, solid sorbents prepared with amorphous silica [12,20] and octadecylamine (ODA) for CO 2 capture are still limited. Octadecylamine (ODA) consists of long and straight carbon chain with one amine group at the terminal.…”

Section: Introductionmentioning

confidence: 99%

“…The development of solid sorbents has focused on the modification of solid surfaces with choosing amine compounds, for example alkanolamine [10][11][12], alkylaminotrimethoxysilane [17], halogenated amine [24], and polymeric amines [25][26]. This new type of sorbent for CO 2 adsorption should has a porous structure of solid supports to be filled with amine compounds to enable the retention of CO 2 molecules.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Tahari

Yarmo

2014

AIP Conference Proceedings

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Abstract. Silica dioxide catalyst (SiO 2 ) can be modified by impregnating amine-containing compounds to improve the CO 2 adsorption capacity. Four type of amines, i.e., monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) and octadecylamine (ODA) were supported on silica dioxide particles. The amine-modified samples were characterized using FTIR, BET and FESEM. All the prepared solid sorbents exhibited type IV isotherm with hysteresis loop. Specific surface areas of the sorbents were significantly reduced due to blocking of micropores and mesopores by the amine compounds. Reactivity of solid sorbents towards CO 2 was evaluated using isothermal CO 2 adsorption by BET. CO 2 adsorption capacity increased with the weight percent of amine compounds loaded onto the SiO 2 . 15 and 25 wt % MEA/SiO 2 and 25 wt % ODA/SiO 2 sorbents showed greater CO 2 adsorption capacities compared to the virgin sample (SiO 2 ). This study shows that the order of adsorption capacity for the four types of amines was MEA (4.05 wt % CO 2 /adsorbent) > ODA (2.45 wt % CO 2 /adsorbent) > DEA (1.71 wt % CO 2 /adsorbent) > TEA (0.91 wt % CO 2 /adsorbent). CO 2 uptakes by ODA/SiO 2 sorbents were higher than DEA/SiO 2 and TEA/SiO 2 is mainly due to their smaller pore volume and pore width of the adsorbent, therefore, greater interactions of CO 2 -ODA in pores. MEA/SiO 2 has the highest ability in capturing CO 2 because of the increasing steric hindrance of long chain ODA and alkyl substituent on DEA and TEA.

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“…Theunissen et al [4] reported condensed rotational separations for CO2 removal from contaminated natural gas. Zanganeh et al [5] designed a CO2 cryogenic separate system where flue gas is compressed, cooled and dried, then the CO2 is condensed into a liquid. The above strategies capture CO2 by liquefaction or desublimation separately, however, at a nominal 14% CO2 in typical flue gas, no liquid forms at any temperature or pressure occur, and desublimation separation is too energy-intensive to apply alone.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a New Liquefaction Combined with Desublimation System for CO2 Separation Based on N2/CO2 Phase Equilibrium

Yang

et al. 2015

Energies

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Cryogenic CO2 capture is considered as a promising CO2 capture method due to its energy saving and environmental friendliness. The phase equilibrium analysis of CO2-mixtures at low temperature is crucial for the design and operation of a cryogenic system because it plays an important role in analysis of recovery and purity of the captured CO2. After removal of water and toxic gas, the main components in typical boiler gases are N2/CO2. Therefore, this paper evaluates the reliabilities of different cubic equations of state (EOS) and mixing rules for N2/CO2. The results show that Peng-Robinson (PR) and Soave-Redlich-Kwong (SRK) fit the experimental data well, PR combined with the van der Waals (vdW) mixing rule is more accurate than the other models. With temperature decrease, the accuracy of the model improves and the deviation of the N2 vapor fraction is 0.43% at 220 K. Based on the selected calculation model, the thermodynamic properties of N2/CO2 at low temperature are analyzed. According to the results, a new liquefaction combined with a desublimation system is proposed. The total recovery and purity of CO2 production of the new system are satisfactory enough for engineering applications. Additionally, the total energy required by the new system to capture the CO2 is about 3.108 MJ·kgCO2, which appears to be at least 9% lower than desublimation separation when the initial concentration of CO2 is 40%. OPEN ACCESSEnergies 2015, 8 9496

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CO2 Capture and Development of an Advanced Pilot-Scale Cryogenic Separation and Compression Unit

Cited by 87 publications

References 4 publications

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Analysis of a New Liquefaction Combined with Desublimation System for CO2 Separation Based on N2/CO2 Phase Equilibrium

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