摘要:

AbstractThe rates of calcination of two types of limestones, ranging in particle size from 1 to 90 μm, were measured over the temperature range 516 to 1,000°C. A kinetic model based on the B.E.T. (Brunauer‐Emmett‐Teller method) surface area of the CaCO3correlates the results over 5 orders of magnitude in reaction rate. The B.E.T. surface area of CaO formed by rapid calcination in dispersed‐particle systems is 50 to

ISSN:0001-1541    

DOI:10.1002/aic.690310112

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

摘要:

AbstractToor's (1969) hypothesis is extended to the second‐order, series‐parallel reaction. A second closure relates the mixing for the second reaction to the first. The equations are solved for conversion and selectivity for a turbulent reactor configuration. The analysis is extended to incorporate concepts of residence time distribution, segregation, and maximum mixedn

ISSN:0001-1541    

DOI:10.1002/aic.690310113

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

摘要:

AbstractMeasurements of the effect of liquid viscosity on the initiation of roll waves in a horizontal gas‐liquid flow are presented. These results are interpreted by an analysis based on the calculation of the growth of long wavelength disturbance

ISSN:0001-1541    

DOI:10.1002/aic.690310114

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

摘要:

AbstractA computer model for a hot fluidized bed was developed. The large heat transfer coefficients characteristic of fluidized beds were computed without an enhancement of heat transfer by turbulence. They agreed with measurements reported by Ozkaynak and Chen (1980) within the accuracy of estimated thermal conductivity of solids.

ISSN:0001-1541    

DOI:10.1002/aic.690310115

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

摘要:

AbstractA method for assessing control performance at different operating conditions in a chemical process is developed using singular value analysis. The control potential of the system is established by analyzing the singular values of the steady‐state system matrix. Dynamic considerations and interaction analysis can be included in the framework of the method described. The approach enables the process engineer to consider controllability of the process as well as economics in synthesizing a changeover control policy. Singular values depend on the scaling of the system, i.e., the definition of the physical dimensions of the system. The effects of scaling on the analysis are first investigated by scaling the steady‐state system matrix with empirical methods, equilibration, and geometric scaling. Using the insights gained from these studies a scaling method, variable normalization and equation equilibration, which is intuitively appealing and suited for the purpose, is devised. Two typical systems, continuous stirred tank reactor and a polymerization reaction system, demonstrate the usefulness of this met

ISSN:0001-1541    

DOI:10.1002/aic.690310116

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690310117

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690310118

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690310119

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690310120

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690310121

出版商:American Institute of Chemical Engineers    

年代:1985

数据来源: WILEY