Modeling, simulation and evaluation of biogas upgrading using aqueous choline chloride/urea

Ma, Chunyan; Xie, Yujiao; Ji, Xiaoyan; Liu, Chang; Lü, Xiaohua

doi:10.1016/j.apenergy.2017.03.059

Cited by 43 publications

(33 citation statements)

References 53 publications

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“…This type of ILs is easy to prepare and no further purification steps are required which resulted in low cost, and hence this ILs is more economical than the other ILs [124]. Using DESs as CO2 absorbents were firstly reported by Li et al [125].…”

Section: Deep Eutectic Solvents (Dess)mentioning

confidence: 99%

Role of solvents in CO2 capture processes: The review of selection and design methods

Borhani

Wang

2019

Renewable and Sustainable Energy Reviews

215

108

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Solvent selection and design are imperative in the CO2 capture process. The efficiency and the overall cost of the process are directly affected by the solvent as a consequence of the effect of solvent on factors such as CO2 absorption capacity, size of equipment, and solvent regeneration energy. This review paper aims to review the most important solvents and mixtures of solvents, absorbing CO2 via chemisorption, physisorption and chemi-physisoprtion. Characteristic and structure of different solvents are presented with the advantages and disadvantages of each being highlighted. Mixtures of solvents include chemical or physical solvents only, and combinations of physical and chemical solvents are categorised. In addition to common solvents, phase change solvents are also described. Once a comprehensive list of solvents is presented, different methods of solvent selection and design are illustrated, namely methods involving experiments, process and equilibrium models, predictive models, and computer-aided molecular design (CAMD). The importance of integrated solvent and process selection and design is also discussed. The most recent and selected progress studies in each section are reviewed in detail.

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Section: Deep Eutectic Solvents (Dess)mentioning

confidence: 99%

Role of solvents in CO2 capture processes: The review of selection and design methods

Borhani

Wang

2019

Renewable and Sustainable Energy Reviews

215

108

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“…In this work, the equilibrium approach was used. In the equilibrium-based model, the liquid and gas phases are assumed to be in equilibrium [37]. The process depicted in Fig 5 consists of two heat exchangers (HEATX-1 and HEATX-2) that collectivity represent the heat exchangers and coolers shown in Fig 4, two valves (VALVE-1 and VALVE-2) to regulate the pressure within the gas sweetening unit, the recycling pump (PUMP), and the flash drum (FLASH) implicitly used in the MEG process to avoid problems caused by impurities and to remove some of the absorbed hydrocarbons [36].…”

Section: Plos Onementioning

confidence: 99%

“…For a better comparison when calculating the total energy utilization, the contributions of the thermal duties (kW th ) are converted to equivalent electricity duties (kW e ). For the heating duty, the conversion efficiency of heat to electricity was assumed to be 0.3 [37].…”

Section: Plos Onementioning

confidence: 99%

Polyethylene glycol-based deep eutectic solvents as a novel agent for natural gas sweetening

et al. 2020

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Deep eutectic solvents (DESs) have received significant attention as potential extracting agents in recent years due to their favorable characteristics including low cost, easy preparation and environmentally safe starting materials. Experimentally screening for highly efficient DESs meeting various requirements for natural gas sweetening remains a challenging task. Thus, an extensive database of estimated Henry's law constants (H i) and solubilities (x i) of CO 2 in 170 different DESs at 25˚C has been constructed using the COSMO-RS method to select potential DESs. Based on the COSMO-RS study, three DESs, namely tetrabutylammonium bromide (TBAB)+polyethylene glycol (PEG-8) (on a molar basis 1:4), TBAB+octanoic acid (OCT) (1:4), and methyltriphenylphosphonium bromide (MTPB)+PEG-8 (1:10), were chosen for further experimentation up to 2 bar at 25˚C using a vapor-liquid equilibria (VLE) apparatus. Reliable thermophysical properties were determined experimentally, and a detailed equilibrium-based model was developed for one of the glycol-based DESs (i.e., TBAB+PEG-8 (1:4)). This information is an essential prerequisite for carrying out process simulations of natural gas sweetening plants using ASPEN PLUS. The simulation results for the proposed DES were compared to those of monoethylene glycol (MEG). Here, we find that the aqueous TBAB+PEG-8 (1:4) solvent shows~60% lower total energy consumption and higher CO 2 removal when compared to those using the MEG solvent.

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“…The very first DES reported by Abbott et al was formed between choline chloride-HBA (a vitamin B component) and urea-HBD (Abbott et al, 2003). Afterward, most of the DESs reported were primarily obtained from the choline chloride because it is a biodegradable and low cost, as the price of choline based DESs is merely 4-9% of the conventional ILs (Ma et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Novel Poly Deep Eutectic Solvents Based Supported Liquid Membranes for CO2 Capture

et al. 2020

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Modeling, simulation and evaluation of biogas upgrading using aqueous choline chloride/urea

Cited by 43 publications

References 53 publications

Role of solvents in CO2 capture processes: The review of selection and design methods

Role of solvents in CO2 capture processes: The review of selection and design methods

Polyethylene glycol-based deep eutectic solvents as a novel agent for natural gas sweetening

Novel Poly Deep Eutectic Solvents Based Supported Liquid Membranes for CO2 Capture

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