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JournalISSN: 0098-6445

Chemical Engineering Communications 

Taylor & Francis
About: Chemical Engineering Communications is an academic journal published by Taylor & Francis. The journal publishes majorly in the area(s): Adsorption & Mass transfer. It has an ISSN identifier of 0098-6445. Over the lifetime, 5912 publications have been published receiving 77442 citations.


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Journal ArticleDOI
TL;DR: In this paper, simple group-contribution methods are proposed to estimate eleven important physical properties of pure materials, and a common set of structural groups is employed to achieve high accuracy but not claimed to be as accurate as or more accurate than techniques in common use today.
Abstract: Simple group-contribution methods are proposed to estimate eleven important physical properties of pure materials. A common set of structural groups was employed. High accuracy is not claimed, but the proposed methods are often as accurate as or more accurate than techniques in common use today.

1,573 citations

Journal ArticleDOI
Harold P. Grace1
TL;DR: In this article, the authors discuss the role of statics in high-viscosity IMMISCIBLE FLUID systems and the application of mixers as disphers.
Abstract: (1982). DISPERSION PHENOMENA IN HIGH VISCOSITY IMMISCIBLE FLUID SYSTEMS AND APPLICATION OF STATIC MIXERS AS DISPERSION DEVICES IN SUCH SYSTEMS. Chemical Engineering Communications: Vol. 14, No. 3-6, pp. 225-277.

1,358 citations

Journal ArticleDOI
TL;DR: In this paper, an overview is presented of the mechanisms that have been proposed in literature and the kinetic data for the various reactions are critically evaluated, along with the applicability and restrictions are discussed along with perspectives.
Abstract: Alkanolamine solutions are frequently used as solvent for the removal of acid compounds from industrial gases (Kohl and Riesenfeld, 1979). Depending on the process requirements, e.g., selective removal of H2S, CO2-bulk removal, several options for alkanolamine based treating solvents with varying compositions of the solution have been proposed. In this paper an overview is presented of the mechanisms that have been proposed in literature and the kinetic data for the various reactions are critically evaluated. Conclusions on the applicability and restrictions are discussed along with perspectives. In addition white spots in the present knowledge are indicated. The reaction between CO2 and primary/secondary amines both in aqueous and non-aqueous solutions can be described over a wide range of conditions and amine concentrations with the zwitterion-mechanism as originally proposed by Caplow (1968) and reintroduced by Danckwerts (1979). All published results, both non-aqueous and aqueous solutions, amine-prom...

631 citations

Journal ArticleDOI
TL;DR: QDMC is an improved version of Shell's Dynamic Matrix Control (DMC) multivariable algorithm which provides a direct and efficient method for handling process constraints.
Abstract: QDMC is an improved version of Shell's Dynamic Matrix Control (DMC) multivariable algorithm which provides a direct and efficient method for handling process constraints. The algorithm utilizes a quadratic program to compute moves on process manipulated variables which keep controlled variables close to their targets while preventing violations of process constraints. Several on-line applications have demonstrated its excellent constraint handling properties, transparent tuning and robustness, while requiring minimal on-line computational load.

570 citations

Journal ArticleDOI
TL;DR: In this paper, it was shown that atmospheric nucleation may occur by a collision-limited process, rather than by a condensation/evaporation controlled process as is assumed in the classical theory.
Abstract: Measured production rates of tropospheric ultrafine particles (˜3nm diameter) are reported for the first time and are shown to be orders of magnitude greater than nucleation rates predicted by the binary theory of homogeneous nucleation for sulfuric acid and water. Furthermore, the functional dependence of observed particle formation rates on sulfuric acid vapor concentrations is much weaker than predicted by binary theory. We present arguments to show that these discrepancies might be due to the participation of a species such as ammonia which could stabilize subcritical clusters, thereby enhancing nucleation rates. The data suggest that atmospheric nucleation may occur by a collision-limited process, rather than by a condensation/evaporation controlled process as is assumed in the classical theory.

376 citations

Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
202348
202288
2021253
2020150
2019136
2018133