Analyse d'un reacteur isotherme a ecoulement piston garni de particules dont la quantite de catalyseur est concentree en des sites specifiques dependant de parametres physicochimiques. On montre que le reacteur peut posseder au moins trois regimes permanents, et que la multiplicite des regimes et la stabilite du reacteur sont intimement lies a la multiplicite et a la stabilite de la premiere couche de particules disposee dans la direction axiale
{"title":"Optimal catalyst activity profiles in pellets. 4. Analytical evaluation of the isothermal fixed-bed reactor","authors":"M. Morbidelli, A. Servida, A. Varma","doi":"10.1021/I100023A001","DOIUrl":"https://doi.org/10.1021/I100023A001","url":null,"abstract":"Analyse d'un reacteur isotherme a ecoulement piston garni de particules dont la quantite de catalyseur est concentree en des sites specifiques dependant de parametres physicochimiques. On montre que le reacteur peut posseder au moins trois regimes permanents, et que la multiplicite des regimes et la stabilite du reacteur sont intimement lies a la multiplicite et a la stabilite de la premiere couche de particules disposee dans la direction axiale","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88814341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"n-Decane pyrolysis at high temperature in a flow reactor","authors":"F. Billaud, E. Freund","doi":"10.1021/I100023A023","DOIUrl":"https://doi.org/10.1021/I100023A023","url":null,"abstract":"","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80864312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Modele mathematique decrivant le comportement d'une membrane bipolaire separant, soit deux solutions de sels, soit un acide et une base. Ce modele est base sur les equations de transfert de Nernst-Planck et comprend les effets suivants: gradients de potentiel imposes, ecoulement de l'ion et de l'eau, permeabilite de la membrane non ideale, charge spatiale non nulle, polarisation de la membrane et interfaces qui sont d'epaisseur finie et qui ne sont pas en equilibre thermodynamique
{"title":"A model for bipolar membranes in an acid-base environment","authors":"W. H. Rose, I. F. Miller","doi":"10.1021/I100023A010","DOIUrl":"https://doi.org/10.1021/I100023A010","url":null,"abstract":"Modele mathematique decrivant le comportement d'une membrane bipolaire separant, soit deux solutions de sels, soit un acide et une base. Ce modele est base sur les equations de transfert de Nernst-Planck et comprend les effets suivants: gradients de potentiel imposes, ecoulement de l'ion et de l'eau, permeabilite de la membrane non ideale, charge spatiale non nulle, polarisation de la membrane et interfaces qui sont d'epaisseur finie et qui ne sont pas en equilibre thermodynamique","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87627616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Velocity and temperature fields in turbulent jets issuing from sharp-edge inlet round nozzles","authors":"N. Obot, T. Trabold, M. L. Graska, F. Gandhi","doi":"10.1021/I100023A022","DOIUrl":"https://doi.org/10.1021/I100023A022","url":null,"abstract":"","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83276092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Methode simple et exacte de calcul du reflux minimum dans les colonnes a distiller avec effets thermiques importants, applicable aux melanges ideaux, non ideaux et azeotropiques
简单准确的计算蒸馏柱最小回流的方法，具有显著的热效应，适用于理想、非理想和共沸混合物
{"title":"Design and synthesis of homogeneous azeotropic distillations. 5. Columns with nonnegligible heat effects","authors":"J. R. Knight, M. Doherty","doi":"10.1021/I100022A016","DOIUrl":"https://doi.org/10.1021/I100022A016","url":null,"abstract":"Methode simple et exacte de calcul du reflux minimum dans les colonnes a distiller avec effets thermiques importants, applicable aux melanges ideaux, non ideaux et azeotropiques","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74702895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transient analysis of deactivation in a single pellet with changing diffusivity and voidage","authors":"K. Prasad, R. Vaidyeswaran, M. S. Ananth","doi":"10.1021/I100022A002","DOIUrl":"https://doi.org/10.1021/I100022A002","url":null,"abstract":"","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79156469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ces anomalies sont expliquees par la distorsion des pores due aux pressions appliquees qui peuvent atteindre 100 atm. Obtention des solutions numeriques des equations elastoplastiques gouvernant la distorsion des membranes, par la methode des elements finis
{"title":"Direction-dependent Flux Anomalies in Asymmetric Reverse Osmosis Membranes- A Theoretical analysis.","authors":"Joong Kon Park, H. Chang, Jai-Hak Park, Y. Earmme","doi":"10.1021/I100022A003","DOIUrl":"https://doi.org/10.1021/I100022A003","url":null,"abstract":"Ces anomalies sont expliquees par la distorsion des pores due aux pressions appliquees qui peuvent atteindre 100 atm. Obtention des solutions numeriques des equations elastoplastiques gouvernant la distorsion des membranes, par la methode des elements finis","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80349311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Systeme a capillaire; il reproduit bien les donnees de la litterature. Nouvelles mesures pour le m-xylene sous l'o-xylene
毛细血管系统;它很好地复制了文献中的数据。邻二甲苯下间二甲苯的新措施
{"title":"Transient flow diffusometer","authors":"R. G. Rice, Mark A. Goodner","doi":"10.1021/I100022A019","DOIUrl":"https://doi.org/10.1021/I100022A019","url":null,"abstract":"Systeme a capillaire; il reproduit bien les donnees de la litterature. Nouvelles mesures pour le m-xylene sous l'o-xylene","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88667018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Transport de rayonnement a travers les espaces vides d'un solide poreux a hautes temperatures
辐射在高温下通过多孔固体空隙的传输
{"title":"Radiation across and down a cylindrical pore having both specular and diffuse reflectance components","authors":"D. Tsai, W. Strieder","doi":"10.1021/I100022A011","DOIUrl":"https://doi.org/10.1021/I100022A011","url":null,"abstract":"Transport de rayonnement a travers les espaces vides d'un solide poreux a hautes temperatures","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83860950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The chromate ion exchange recovery process for cooling tower blowdown is unique due to the early, gradual breakthrough of highly preferred Cr(VI) from fixed-bed columns for all types of anion-exchange resins. It is shown that the early Cr(VI) breakthrough is not due to poor column kinetics but is predictable from an equilibrium model by using the appropriate exchange reaction involving both HCrO/sub 4//sup -/ and Cr/sub 2/O/sub 7//sup 2 -/. At acidic pH, HCrO/sub 4//sup -/ is practically the only Cr(VI) species in the aqueous phase, while in the exchanger phase both HCrO/sub 4//sup -/ and Cr/sub 2/O/sub 7//sup 2 -/ exist. The presence of Cr/sub 2/O/sub 7//sup 2 -/ in the exchanger's solid phase causes a positively cured (concave upward) isotherm at relatively low Cr(VI) loading of the resin, and this equilibrium property is primarily responsible for the unusual, gradual breakthrough of Cr(VI). The presence of Cr/sub 2/O/sub 7//sup -/ in the solid phase may be viewed as the dimerization of HCrO/sub 4//sup -/, according to the Donnan equilibrium principle.
{"title":"Chromate ion exchange mechanism for cooling water","authors":"A. SenGupta, D. Clifford","doi":"10.1021/I100022A012","DOIUrl":"https://doi.org/10.1021/I100022A012","url":null,"abstract":"The chromate ion exchange recovery process for cooling tower blowdown is unique due to the early, gradual breakthrough of highly preferred Cr(VI) from fixed-bed columns for all types of anion-exchange resins. It is shown that the early Cr(VI) breakthrough is not due to poor column kinetics but is predictable from an equilibrium model by using the appropriate exchange reaction involving both HCrO/sub 4//sup -/ and Cr/sub 2/O/sub 7//sup 2 -/. At acidic pH, HCrO/sub 4//sup -/ is practically the only Cr(VI) species in the aqueous phase, while in the exchanger phase both HCrO/sub 4//sup -/ and Cr/sub 2/O/sub 7//sup 2 -/ exist. The presence of Cr/sub 2/O/sub 7//sup 2 -/ in the exchanger's solid phase causes a positively cured (concave upward) isotherm at relatively low Cr(VI) loading of the resin, and this equilibrium property is primarily responsible for the unusual, gradual breakthrough of Cr(VI). The presence of Cr/sub 2/O/sub 7//sup -/ in the solid phase may be viewed as the dimerization of HCrO/sub 4//sup -/, according to the Donnan equilibrium principle.","PeriodicalId":13548,"journal":{"name":"Industrial & Engineering Chemistry Fundamentals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87750259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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