Comparison of shortcut methods for designing of divided wall columns for separating tertiary zeotropic mixtures

Recently, divided wall column has been considered as one of the types of thermally coupled towers for separating multicomponent mixtures. In the structure of this tower, there is a wall that divides the tower into two parts, the Prefractionator and the Main Column. The divided wall column is thermodynamically equivalent of the Petlyuk tower. Therefore, in order to obtain the design and simulation parameters of the Petlyuk tower utilizing the available software, this tower must be divided into simpler towers. The shortcut method is employed to acquire the initial parameters. In the present research, initially, the design of divided wall column has been conducted using shortcut methods to separate three-component zeotropic mixtures. Next, the design and simulation of the divided wall column is performed employing ASPEN PLUS software and the results of the two methods are compared from various angles.

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A Novel Shortcut Method for the Design of Heteroazeotropic Distillation of Multicomponent Mixtures

Design for Energy and the Environment ◽

10.1201/9781439809136-c97 ◽

2009 ◽

pp. 1035-1052

Author(s):

Korbinian Kraemer ◽

Andreas Harwardt ◽

Wolfgang Marquardt

Keyword(s):

Multicomponent Mixtures ◽

Heteroazeotropic Distillation ◽

Shortcut Method

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A Novel Shortcut Method for the Design of Heteroazeotropic Distillation of Multicomponent Mixtures

Design for Energy and the Environment ◽

10.1201/9781439809136-100 ◽

2009 ◽

pp. 1061-1078

Keyword(s):

Multicomponent Mixtures ◽

Heteroazeotropic Distillation ◽

Shortcut Method

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Sensitivity Analysis and Selection of Check Index of Signal Intersection Simulation Model Based on VISSIM

智能城市应用 ◽

10.33142/sca.v2i5.818 ◽

2019 ◽

Vol 2 (5) ◽

Author(s):

Mengda Zhang ◽

Chenjing Zhou ◽

Tian-tian Zhang ◽

Yan Han

Keyword(s):

Sensitivity Analysis ◽

Simulation Model ◽

Optimal Process ◽

Parameter Calibration ◽

Index Set ◽

The Core ◽

Core Module ◽

Simulation Parameter ◽

Simulation Parameters ◽

Selection Of

Selecting check index quantitatively is the core of the calibration of micro traffic simulation parameters at signal intersection. Five indexes in the node (intersection) module of VISSIM were selected as the check index set. Twelve simulation parameters in the core module were selected as the simulation parameters set. Optimal process of parameter calibration was proposed and model of the intersection of Huangcun west street and Xinghua street in Beijing was built in VISSIM to verify it. The sensitivity analysis between each check index and simulation parameter in their own set was conducted respectively. Sensitive parameter sets of different check indices were obtained and compared. The results show that different indexes have different size of set, and average vehicle delay's is maximum, so it's necessary to select index quantitatively. The results can provide references for scientific selection of the check indexes and improve the study efficiency of parameter calibration.

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Methods for saving the productivity of slope lands

сборник статей всероссийской научной конференции с международным участием "Растениеводство и луговодство" ◽

10.26897/978-5-9675-1762-4-2020-57 ◽

2020 ◽

Author(s):

N.A. Batyakhina N.A. ◽

Keyword(s):

Forest Soil ◽

Crop Rotation ◽

Plant Communities ◽

Crop Production ◽

Phosphorus Content ◽

Gray Forest Soil ◽

Conservation Tillage ◽

Multicomponent Mixtures

The influence of various annual multicomponent mixtures in the crop rotation link on its productivity and fertility of gray forest soil is shown. The complexity of the structure of plant communities has reduced the share of weeds in crop production annual mix, 2.6-3.7% and conservation tillage for wheat has increased by 2.5 times the phosphorus content is 1.9 times the potassium, 12% increased productivity.

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