Pervaporation technology for regeneration of diethylene glycol at Russian complex gas treatment plants with the use of ceramic membranes HybSi

Akberov, Roald; Fazlyev, A. R.; Klinov, A. V.; Malygin, A. V.; Фарахов, М. И.; Maryakhina, Vera A.

doi:10.1016/j.jngse.2015.07.006

Cited by 10 publications

(3 citation statements)

References 33 publications

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“…In the absorption process, an appropriate liquid desiccant is used to contact wet gas and remove the water vapor. Liquid desiccant absorption technologies use various glycols, including Monoethylene glycol (MEG) ( Alnili and Barifcani, 2018), diethylene glycol (DEG) (Akberov et al, 2015), triethylene glycol (TEG) (Kong et al, 2018), and tetraethylene glycol (T4EG) (Sarker, 2020). The use of DEG and TEG is more widespread among the many forms of glycol.…”

Section: Introductionmentioning

confidence: 99%

Techno-economical evaluation of three methods for stripping gas recovery in gas dehydration by unit of Khark petrochemical complex

Abdehvand,

Haghi,

Hosseinirad

2023

Preprint

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The presence of water vapor in natural gas poses several issues including corrosion, blockages, and reduced pipeline capacity. The gas dehydration is a crucial process to reduce the water content and mitigate these problems. In this paper, glycol dehydration unit of Khark Petrochemical Company (KPC) has been simulated using Aspen Hysys v11.0 process simulator. At first, the simulation results has been validated with the design data and affecting parameters on the dehydration unit performance were identified through sensitivity analysis and their effects on the produced dry gas was investigated. The results showed that increasing the solvent circulation rate, stripping gas flow rate and reboiler temperature leads to more water removal rate. Secondly, the several options are suggested for stripping gas recovery and capital and operating expenditure for each option has been estimated and techno-economical evaluation of stripping gas recovery was carried out. Our techno-economic analysis reveals that about 0.7 MMSCFD stripping gas can be recovered from regeneration towers by increasing the operating pressure of regenerator and separating water from stripping gas. In the optimum option (sending the stripping gas to low pressure feed gas compressor), this project requires about 80,000 $ capital cost and has 1.7 MM$ annual revenue.

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Section: Introductionmentioning

confidence: 99%

Techno-economical evaluation of three methods for stripping gas recovery in gas dehydration by unit of Khark petrochemical complex

Abdehvand,

Haghi,

Hosseinirad

2023

Preprint

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“…Hybrid silica membranes were developed by ECN (Netherland) and show a hybrid structure. They mostly applied for alcohol dehydration and present a very good thermal resistance up to 150 and 190 °C in the long and short term respectively [29,30]. The effects of temperature and concentration/number of organic species in the feed on purification performances were studied.…”

Section: Introductionmentioning

confidence: 99%

Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes

et al. 2019

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Solvents purification mainly used in pharmaceutical field such as acetone and methyl ethyl ketone (MEK) were performed through hybrid silica membranes and from binary and multi-components mixtures. Two hybrid silica membranes—zirconia doped bis(triethoxysilyl)methane and bis(triethoxysilyl)ethane (BTESE)—were studied. Flux, permeance, and separation factor were evaluated depending on temperature, composition, and number of organic compounds in the feed. Dehydration tests of acetone were operated at 30 and 45 °C following by acetone and MEK purification at 50 °C from multi-components hydro-organic mixtures where hydrophilic compounds (water, methanol) but also hydrophobic (dichloromethane (DCM) and/or toluene) were present. Results showed that the presence of Zr nanoparticles affected flux and improved selectivity in the case of dehydration. Experiments related to acetone and MEK purification, revealed a mass transfer alteration and a decrease of performance, from 99 to 97 wt% and from 98 to 95 wt% respectively, when the number of compounds in the initial feed grown up and more precisely, in the presence of DCM and toluene thus highlighting a possible coupling effect.

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“…The use of regenerative processes is in line with better protection of the environment. Among these, pervaporation is being used more and more for purification and reuse, thanks to its economic advantages [ 6 ]. Indeed, this process, based on the differences in solubility and diffusivity of minority compounds through a non-porous membrane, across a partial pressure gradient, is suitable to separate azeotropes, which is not possible with distillation and it is less energy consuming.…”

Section: Introductionmentioning

confidence: 99%

On-Line NIR to Regulate Pervaporation Process: Application for Dehydration

et al. 2018

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The regeneration of volatile organic solvents via dehydration tests, from 90 wt %, was evaluated by pervaporation using an on-line near-infrared (NIR) spectrometer. Experiments were performed using a bis(triethoxysilyl)methane (BTESM)-based ceramic HybSi® membrane at temperatures of 20, 30 and 40 °C. The presence of an on-line NIR allows continuous monitoring of the process without sampling, and quickly estimates mass fractions of species in the retentate. Dehydration tests were performed at 30 °C in order to confirm the on-line NIR reproducibility, and closely matched results obtained with an off-line densimeter. These results validated the usefulness of the on-line NIR and provided the same precision whatever the mass fraction in the retentate. A good on-line reproducibility was found, with an agreement between the on-line NIR and off-line densimeter, obtaining an average deviation of ±0.058 wt %, ±0.17 wt % and ±0.049 wt %, respectively, at 20, 30 and 40 °C.

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Pervaporation technology for regeneration of diethylene glycol at Russian complex gas treatment plants with the use of ceramic membranes HybSi

Cited by 10 publications

References 33 publications

Techno-economical evaluation of three methods for stripping gas recovery in gas dehydration by unit of Khark petrochemical complex

Techno-economical evaluation of three methods for stripping gas recovery in gas dehydration by unit of Khark petrochemical complex

Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes

On-Line NIR to Regulate Pervaporation Process: Application for Dehydration

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