Theoretical Study of Gas Hydrate Decomposition Kinetics—Model Development

Abstract

In order to provide an estimate of the order of magnitude of intrinsic gas hydrate dissolution and dissociation kinetics, the "Consecutive Desorption and Melting Model" (CDM) is developed by applying only theoretical considerations. The process of gas hydrate decomposition is assumed to comprise two consecutive and repetitive quasi chemical reaction steps. These are desorption of the guest molecule followed by local solid body melting. The individual kinetic steps are modeled according to the "Statistical Rate Theory of Interfacial Transport" and the Wilson-Frenkel approach. All missing required model parameters are directly linked to geometric considerations and a thermodynamic gas hydrate equilibrium model.

Oxysulfonylation of Alkenes with Sulfonyl Hydrazides under Transition‐Metal‐Free Conditions

“…In accordance with 21, 22, this work now focuses on the determination of the kinetic coefficient of gas hydrate dissociation k D defined by the following equation: …”

“…Our investigations dealt with theoretical and experimental studies of hydrate decomposition kinetics. Previously, a model has been developed allowing a theoretical estimate for the order of magnitude of intrinsic kinetics during hydrate phase changes 21. It was shown subsequently that influence of intrinsic kinetics on gas hydrate decomposition can be expected to be of minor relevance compared to mass transfer effects 22.…”

Experimental Study of Methane Hydrate Decomposition Kinetics

“…In accordance with [21,22], this work now focuses on the determination of the kinetic coefficient of gas hydrate dissociation k D defined by the following equation:…”

“…All necessary model parameters required for calculating x G according to Eq. (12) are given by [21].…”

“…Previously, a model has been developed allowing a theoretical estimate for the order of magnitude of intrinsic kinetics during hydrate phase changes [21]. It was shown subsequently that influence of intrinsic kinetics on gas hydrate decomposition can be expected to be of minor relevance compared to mass transfer effects [22].…”