Routes to hydrate formation from water dissolved in gas and impact of mineral surfaces

作     者：Bjørn Kvamme Na Wei Jinzhou Zhao Shouwei Zhou Liehui Zhang Wantong Sun Navid Saeidi 

作者机构：State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityXindu Road No.8Chengdu610500China State Key Laboratory of Natural Gas HydrateSun Palace South Street No.6Beijing10027China Hyzenenergy26701 Quail CreekLaguna HillsCA92656USA Strategic Carbon LLC20 Ladd St.Suite 200PortsmouthNH03801USA 

出 版 物：《Petroleum》 (油气（英文）)

年 卷 期：2021年第7卷第4期

页      面：385-401页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：The authors are grateful for financial support through 111 Project(No:D21025) National Key Research and Development Program(No:2019YFC0312300) National Natural Science Foundation Item of China(No:U20B6005-05,51874252 and 5177041544) Open Fund Project of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(No:PLN2021-02 and PLN2021-03) 

主　　题：Hydrate Thermodynamics Risk Inhibitors 

摘      要：Mineral surfaces adsorb water to extreme densities and corresponding low chemical *** results in a dual effect in terms of *** and slightly polar components adsorb directly on mineral surfaces and generate efficient conditions for hydrate *** due to the extremely low chemical potential of adsorbed water the hydrate nuclei formed towards mineral surfaces have to either detach from the vicinity of mineral surfaces,or be bridged by structured water in a dynamic attachment of hydrate cores some few nm outside mineral *** transport of gas(CH4,gas mixtures,CO2)the conventional water dew-point analysis will typically result in a substantially higher acceptable water concentration as compared to the concentration for adsorption of water from gas to rust *** formation of hydrate from water dissolved in gas is thermodynamically feasible,as discussed in open *** this work we demonstrate that it is also feasible in terms of mass transport.A new theory for enthalpy of hydrate dissociation has been extended to also direct hydrate formation from water dissolved in *** remaining question is whether direct hydrate formation from gas is also feasible in terms of transporting the hydrate formation heat away through a heat insulating *** propose further research strategies to enlighten this *** of glycols to critical points in processing of gas or transport is already in use by companies like for instance *** is,however,a need for more work on how efficient it is and if it can also be used for multiphase transport of hydrocarbons with significant water *** research activities are in progress and briefly outlined here.