Energy Efficient Solvents for CO2 Capture by Gas-Liquid by Wojciech M. Budzianowski

By Wojciech M. Budzianowski

This publication experiences and characterises promising single-compound solvents, solvent blends and complex solvent structures appropriate for CO2 catch functions utilizing gas-liquid absorption.
Focusing on power effective solvents with minimum adversarial environmental influence, the contributions integrated examine the foremost technological merits, in addition to learn and improvement demanding situations of promising solvents and solvent platforms in numerous sustainable CO2 catch applications.
It offers a invaluable resource of knowledge for undergraduate and postgraduate scholars, in addition to for chemical engineers and effort specialists.

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Extra resources for Energy Efficient Solvents for CO2 Capture by Gas-Liquid Absorption: Compounds, Blends and Advanced Solvent Systems

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Increasing viscosity severely reduces the formation of spray and increases the energy required to form bubbles. For a similar reason, spray columns will not form fine sprays above approximately 50 mPas. Rotating contactor equipment creates surface through the addition of centrifugal energy (at a cost) and is therefore applicable to a much wider range of solvent viscosities. The very high specific surface areas (per unit liquid volume) that are possible in rotating contactors and consequent thin liquid layers can compensate for the reduced diffusion rates by providing a shorter path length to the solvent reactant.

Cousins Phase Equilibria The ultimate capacity of the absorbent for capturing CO2 is determined by the phase equilibria relationships between the absorbent and CO2 as a function of temperature, solvent composition, and CO2 partial pressure. Due to the formation of bicarbonate, tertiary amines tend to have higher absorption capacities than primary or secondary amines. CO2 solubility in an absorbent is often determined via vapour-liquid-equilibrium (VLE) measurements. There are various methods available for completing these measurements which are used to determine the distribution of CO2 between the gas and liquid phases for absorbents under various conditions.

CO2 captured ½kg=hrŠ ¼ GCO2 ¼ ECO2 Á vCO2 : Á Gin Á MWCO2 MW FG ð1Þ Given a basic process using MEA with an (unloaded) alkanolamine concentration (wam ) of 30 wt%; a cyclic loading [the difference between lean and rich Fig. 1 Typical PCC plant using 30 wt% MEA. The size of the icon for each unit operation is scaled to the capital cost of the item (costs based on Ramezan et al. [4], pro-rated on power or size; adapted from Cottrell et al. 4 tonnes of solvent must be circulated through the absorber and stripper setting the size of pumps, piping and heat exchangers.

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