HYDRATE DISSOCIATION CONDITIONS OF ASSOCIATING MIXTURES BY USING CUBIC-PLUS-ASSOCIATION EOS (CPA)

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NIKBAKHT FATEMEH; IZADPANAH AMIR ABAAS; VARAMINIAN FARSHAD

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Seminar Paper

Paper Information

Seminar: NATIONAL IRANIAN CONFERENCE ON GAS HYDRATE (NICGH)
Year:2013 | Issue:2

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Title

HYDRATE DISSOCIATION CONDITIONS OF ASSOCIATING MIXTURES BY USING CUBIC-PLUS-ASSOCIATION EOS (CPA)

Author(s)

NIKBAKHT FATEMEH | IZADPANAH AMIR ABAAS | VARAMINIAN FARSHAD | Issue Writer Certificate

Keywords

CLATHRATE HYDRATE

INHIBITOR

CPA EOS

Abstract

THE CLASSICAL CUBIC EQUATIONS OF STATE SUCH AS THE SRK AND PR EOS GENERALLY DO NOT RESULT IN ACCURATE PREDICTION OF THE VOLUMETRIC PROPERTIES AND PHASE EQUILIBRIA OF COMPLEX MIXTURES CONTAINING HYDROGEN BONDING COMPONENTS. THIS IS PARTLY BECAUSE OF THE STRONG HYDROGEN BONDING FORCES, WHICH CANNOT BE WELL REPRESENTED BY THE AFOREMENTIONED EOSS. THE CUBIC PLUS ASSOCIATION (CPA) EOS HAS BEEN PROPOSED TO COMBINE A CUBIC EOS EXPRESSION WITH AN ASSOCIATION TERM, DERIVED FROM THE WERTHEIM THEORY AS APPLIED IN THE STATISTICAL ASSOCIATING FLUID THEORY (SAFT) FOR TAKING INTO ACCOUNT THE HYDROGEN BOND INTERACTIONS. IN THIS STUDY THE PHASE BEHAVIOR OF THE WATER + HYDROCARBONS (METHANE AND ETHANE) AND AFOREMENTIONED HYDROCARBONS + METHANOL AQUEOUS SOLUTION SYSTEMS IS MODELED. THE VAN DER WAALS AND PLATTEEUW SOLID SOLUTION THEORY IS APPLIED TO DEAL WITH THE HYDRATE PHASE AND THE CPA EOS IS USED FOR MODELING THE FLUID PHASES.THE 4C AND 2B ASSOCIATION SCHEME FOR WATER AND METHANOL IS USED, RESPECTIVELY. ACCEPTABLE AGREEMENTS ARE FOUND BETWEEN THE REPRESENTED/PREDICTED RESULTS BY THE APPLIED THERMODYNAMIC MODEL AND THE EXPERIMENTAL PHASE EQUILIBRIUM DATA OF THE PURE METHANE OR ETHANE + WATER SYSTEMS AND IN THE PRESENCE OF METHANOL AQUEOUS SOLUTION FROM THE LITERATURE.

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APA: Copy

NIKBAKHT, FATEMEH, IZADPANAH, AMIR ABAAS, & VARAMINIAN, FARSHAD. (2013). HYDRATE DISSOCIATION CONDITIONS OF ASSOCIATING MIXTURES BY USING CUBIC-PLUS-ASSOCIATION EOS (CPA). NATIONAL IRANIAN CONFERENCE ON GAS HYDRATE (NICGH). SID. https://sid.ir/paper/908683/en

Vancouver: Copy

NIKBAKHT FATEMEH, IZADPANAH AMIR ABAAS, VARAMINIAN FARSHAD. HYDRATE DISSOCIATION CONDITIONS OF ASSOCIATING MIXTURES BY USING CUBIC-PLUS-ASSOCIATION EOS (CPA). 2013. Available from: https://sid.ir/paper/908683/en

IEEE: Copy

FATEMEH NIKBAKHT, AMIR ABAAS IZADPANAH, and FARSHAD VARAMINIAN, “HYDRATE DISSOCIATION CONDITIONS OF ASSOCIATING MIXTURES BY USING CUBIC-PLUS-ASSOCIATION EOS (CPA),” presented at the NATIONAL IRANIAN CONFERENCE ON GAS HYDRATE (NICGH). 2013, [Online]. Available: https://sid.ir/paper/908683/en

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