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1. Local Distributions of Bubble Velocity and Interfacial Area in the Slender Particle-Containing Scrubbing–Cooling Chamber of an Entrained-Flow Gasifier

Author:
Zhao, Yumeng; Peng, Xin; Wang, Yifei; Wei, Zongyao; Yu, Guangsuo; Wang, Fuchen
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.8 pp. 3560-3574
ISSN:
1520-5045
Subject:
process design,   etc   ; bubbles; density;     Show all 3 Subjects
Abstract:
... Radial bubble velocities, chord lengths, and local gas holdups were measured by a dual-tip conductivity probe in a slender particle-containing scrubbing–cooling chamber. The annulus region of the bubbling bed was divided into three regions according to the radial distributions of bubble velocity, bubble size, and local gas holdup. Bubble velocity distributions were obtained by the kernel density e ...
DOI:
10.1021/acs.iecr.9b06170

2. Effective Derivation of Asymmetrical Temperature Control Schemes for Dividing-Wall Distillation Columns

Author:
Yuan, Yang; Huang, Kejin; Chen, Haisheng; Qian, Xing; Zang, Lijing; Zhang, Liang
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.5 pp. 2036-2048
ISSN:
1520-5045
Subject:
process design,   etc   ; distillation; temperature;     Show all 3 Subjects
Abstract:
... The potential of adopting asymmetrical temperature control (ATC) schemes to tightly control dividing-wall distillation columns (DWDCs) has yet to be fully explored due to the following two problems. First, the inference accuracy toward the controlled product purity of the candidate controlled variables (CCVs) synthesized for each control loop was not high enough. Second, the determination of the m ...
DOI:
10.1021/acs.iecr.9b05906

3. Operational Flexibility Analysis of High-Dimensional Systems via Cylindrical Algebraic Decomposition

Author:
Zheng, Chenglin; Zhao, Fei; Zhu, Lingyu; Chen, Xi
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.10 pp. 4670-4687
ISSN:
1520-5045
Subject:
process design,   etc   ; case studies; models;     Show all 3 Subjects
Abstract:
... The cylindrical algebraic decomposition (CAD) method has been proposed for flexibility analysis to derive analytical expressions of a feasible region. Due to the heavy computational burden caused by symbolic computation, this method can only handle small-scale problems currently. To overcome this limitation, a novel method is proposed for high-dimensional systems with a number of equalities and li ...
DOI:
10.1021/acs.iecr.9b06061

4. Improving the Crystallinity and Purity of Monodisperse Ag Fine Particles by Heating Colloidal Sprays In-Flight

Author:
Ogi, Takashi; Fukazawa, Hiromitsu; Rahmatika, Annie Mufyda; Hirano, Tomoyuki; Cao, Kiet Le Anh; Iskandar, Ferry
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.13 pp. 5745-5751
ISSN:
1520-5045
Subject:
process design,   etc   ; crystal structure; furnaces; silver;     Show all 4 Subjects
Abstract:
... This work demonstrated the production of highly crystalline, monodisperse fine metal particles with high density and purity using a simple, facile rapid spray heating process. In this technique, a starting solution including fine Ag particles, prepared using a liquid phase method, is sprayed into a horizontal furnace. After this spray heating step, the crystallinity and purity of the particles are ...
DOI:
10.1021/acs.iecr.9b05482

5. Effective Control of Vapor Recompression-Assisted Dividing Wall Column with a Middle Partition

Author:
Gao, Lianrui; Xu, Lianghua; Yin, Xiaohong; Xia, Ming; Yuan, Xigang
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.13 pp. 6112-6122
ISSN:
1520-5045
Subject:
process design,   etc   ; distillation; energy efficiency; temperature; vapors;     Show all 5 Subjects
Abstract:
... Vapor recompression-assisted dividing wall columns (VRC-DWCs) with a middle partition have been shown to have a higher energy efficiency compared to conventional DWCs. However, the controllability of this highly integrated process remains as a challenging issue since all of the benefits of a VRC-DWC are reasonable only under good dynamic controllability. Compared to the control of the vapor recomp ...
DOI:
10.1021/acs.iecr.9b06644

6. CO₂ Separation Performance of Zeolitic Imidazolate Framework-8 Porous Slurry in a Pilot-Scale Packed Tower

Author:
Li, Hai; Liu, Bei; Yang, Mingke; Zhu, Ding; Huang, Zixuan; Chen, Wan; Yang, Lanying; Chen, Guangjin
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.13 pp. 6154-6163
ISSN:
1520-5045
Subject:
process design,   etc   ; carbon dioxide; corrosion; slurries;     Show all 4 Subjects
Abstract:
... In this work, the mixed porous liquid–solid made of zeolitic imidazolate framework-8 (ZIF-8), 2-methylimidazole (mIm), glycol, and water was first used in a pilot-scale packed system for CO₂ capture. The separation performance and equivalent work were investigated systematically. The experimental results show that CO₂ removal ratio could reach 90% when the gas-slurry ratio was fixed at 100. The CO ...
DOI:
10.1021/acs.iecr.9b06897

7. Integrating Data-Driven Modeling with First-Principles Knowledge

Author:
Patel, Nikesh; Nease, Jake; Aumi, Siam; Ewaschuk, Christopher; Luo, Jie; Mhaskar, Prashant
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.11 pp. 5103-5113
ISSN:
1520-5045
Subject:
process design,   etc   ; chemistry; models; motivation; system optimization;     Show all 5 Subjects
Abstract:
... This Article addresses the problem of integrating subspace-based model identification with first-principles modeling for handling scenarios where the subspace model identifies spurious relationships between inputs and outputs. The key motivation is to suitably synergize the two approaches while retaining the simplicity of subspace-based model identification. In the proposed methodology, as is done ...
DOI:
10.1021/acs.iecr.0c00418

8. Modeling the Hydrocracking Process with Deep Neural Networks

Author:
Song, Wenjiang; Mahalec, Vladimir; Long, Jian; Yang, Minglei; Qian, Feng
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.7 pp. 3077-3090
ISSN:
1520-5045
Subject:
process design,   etc   ; neural networks; prediction; refining;     Show all 4 Subjects
Abstract:
... In the refinery process, a vast amount of data is generated in daily production. How to make full use of these data to improve the simulation’s accuracy is crucial to enhancing the refinery operating level. In this paper, a novel deep learning framework integrating the self-organizing map (SOM) and the convolutional neural network (CNN) is developed for modeling the industrial hydrocracking proces ...
DOI:
10.1021/acs.iecr.9b06295

9. Constrained Control and Estimation of Homogeneous Reaction Systems Using Extent-Based Linear Parameter Varying Models

Author:
Marquez-Ruiz, Alejandro; Mendez-Blanco, Carlos; Özkan, Leyla
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.6 pp. 2242-2251
ISSN:
1520-5045
Subject:
process design,   etc   ; nonlinear models; quadratic programming;     Show all 3 Subjects
Abstract:
... In this paper, a model predictive control (MPC) strategy for nonlinear homogeneous reaction systems is proposed. The nonlinear system is first transformed to a linear parameter varying (LPV) system by means of a linear transformation known as extents decomposition. The resulting LPV system is further converted to a linear time invariant (LTI) system by means of a parametric state feedback and feed ...
DOI:
10.1021/acs.iecr.9b04412

10. Particle-Scale Study of the Effect of Operating Conditions on Spout Deflection Behavior in a Flat-Bottomed Spout-Fluidized Bed

Author:
Yue, Yuanhe; Shen, Yansong
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.51 pp. 23445-23457
ISSN:
1520-5045
Subject:
process design,   etc   ; chemistry; hydrodynamics;     Show all 3 Subjects
Abstract:
... Spout deflection is a common instability phenomenon in spout-fluidized beds. The hydrodynamics of spout deflection under several key operating variables, including static bed height (H₀), background velocity (Ubg), and reactor column width (W), is investigated by means of the computational fluid dynamic-discrete element method (CFD-DEM) coupling approach. The results show that non-alternating spou ...
DOI:
10.1021/acs.iecr.9b05225

11. Hydrodynamics and Selectivity Engineering of a Multipoint Dosing Flow Reactor

Author:
Shukla, Chinmay A.; Pal, Sayan; Kulkarni, Amol A.
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.51 pp. 22866-22874
ISSN:
1520-5045
Subject:
process design,   etc   ; hydrodynamics; mixing;     Show all 3 Subjects
Abstract:
... This paper reports the suitability of a multipoint injection continuous flow reactor for carrying out a sequential reaction, while taking into account the associated hydrodynamics of such systems. Pressure drop was measured for different fluid injection patterns, viz., equal fluid dosing, decreasing dosing, and increasing dosing flow rates from the first to the last inlet. Moreover, residence time ...
DOI:
10.1021/acs.iecr.9b04431

12. Bubble Size Distribution and Rise Velocity in a Jet Bubbling Reactor

Author:
Shuai, Yun; Wang, Xinyan; Huang, Zhengliang; Yang, Yao; Sun, Jingyuan; Wang, Jingdai; Yang, Yongrong
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.41 pp. 19271-19279
ISSN:
1520-5045
Subject:
process design,   etc   ; bubbles; liquids;     Show all 3 Subjects
Abstract:
... At low liquid jet velocity (uⱼ), bubble vortices do not appear and the bubble size distribution (BSD) shows a bimodal distribution. The number density function of large bubbles and small bubbles in the bottom section is higher and lower than that in the middle and top regions, respectively. At high uⱼ, the bubble vortices appear and the BSD is a unimodal distribution. Below the nozzle outlet, the ...
DOI:
10.1021/acs.iecr.9b03880

13. Synthesis of heat integrated processing systems taking into account reliability

Author:
Orosz, Ákos; Kovács, Zoltán; Friedler, Ferenc
Source:
Energy 2019 v.181 pp. 214-225
ISSN:
0360-5442
Subject:
process design,   etc   ; heat; models;     Show all 3 Subjects
Abstract:
... Because of the ever increasing complexity of processing systems, the reliability becomes a key aspect in selecting the best process during process design. This is especially crucial if heat integration is also part of process design, because it increases the complexity of the system that may reduce its reliability. Since the selection of a process network during synthesis has major influence on th ...
DOI:
10.1016/j.energy.2019.05.173

14. 110th Anniversary: A Feature-Based Analysis of Static Real-Time Optimization Schemes

Author:
Srinivasan, Bala; Bonvin, Dominique
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.31 pp. 14227-14238
ISSN:
1520-5045
Subject:
process design,   etc   ; models; uncertainty;     Show all 3 Subjects
Abstract:
... This paper addresses the steady-state optimization of continuous processes in the presence of uncertainty in the form of unknown or time-varying model parameters, structural plant-model mismatch, and disturbances. To address these issues, we assume that certain measurements are available in real time, and the question is how the plant inputs can be updated based on these measurements to drive the ...
DOI:
10.1021/acs.iecr.9b02327

15. Pareto-Optimal Fronts for Simple Crystallization Systems Using Pontryagin’s Minimum Principle

Author:
Tseng, Yu-Ti; Pan, Hao-Jen; Ward, Jeffrey D.
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.31 pp. 14239-14251
ISSN:
1520-5045
Subject:
process design,   etc   ; crystallization; mathematics;     Show all 3 Subjects
Abstract:
... Pontryagin’s minimum principle is applied to determine Pareto-optimal fronts for multiobjective optimization of seeded batch crystallization processes. For cases with two objectives, when both objectives are based on properties of the higher moments or lower moments of the crystal size distribution (for example, weight mean size and weight mean coefficient of variation), there is relatively little ...
DOI:
10.1021/acs.iecr.9b02394

16. A method for energy modeling and simulation implementation of machine tools of selective laser melting

Author:
Yi, Li; Glatt, Moritz; Thomas Kuo, Tai-Yen; Ji, Ankyd; Ravani, Bahram; Aurich, Jan C.
Source:
Journal of cleaner production 2020 v.263 pp. 121282
ISSN:
0959-6526
Subject:
process design,   etc   ; energy; equipment; manufacturing; melting; models; prediction;     Show all 7 Subjects
Abstract:
... Additive manufacturing (AM) technologies are providing promising solutions to production of unique parts at reduced material and energy consumptions. However, recent studies show that the sustainable advantage of AM is not always achieved. For ensuring the sustainability of the AM processes, quantification and assessment of the levels of resource consumptions should be carried out at the design ph ...
DOI:
10.1016/j.jclepro.2020.121282

17. Ionic-Liquid-Based Bioisoprene Recovery Process Design

Author:
Chen, Yuqiu; Liu, Xinyan; Kontogeorgis, Georgios M.; Woodley, John M.
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.16 pp. 7355-7366
ISSN:
1520-5045
Subject:
process design,   etc   ; feedstocks; fermentation; ionic liquids; isoprene; models; thermodynamics;     Show all 7 Subjects
Abstract:
... Bioisoprene, which can be produced from renewable feedstocks through fermentation, is a promising alternative to petroleum-derived isoprene. However, challenges including the selection of feasible recovery techniques for bioisoprene should be addressed to achieve economic and technical competitiveness. In this work, ionic liquids (ILs) are first introduced as solvents for the recovery of bioisopre ...
DOI:
10.1021/acs.iecr.0c00146

18. Fluid–Solid Reaction Kinetics for Solids of Nonbasic Geometries: Comparison of the Sohn–Wall Method and the Shape-Factor Method

Author:
Sohn, H. Y.; Roy, S.
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.13 pp. 5720-5724
ISSN:
1520-5045
Subject:
process design,   etc   ; chemical reactions; equations; geometry; reaction kinetics;     Show all 5 Subjects
Abstract:
... The shape of solids undergoing a reaction with a fluid influences how the reaction proceeds with conversion. Complex numerical solutions are needed in general to calculate the conversion–time relation for reactions involving nonbasic solids. This paper presents two simplified, although approximate, methods for obtaining conversion–time relations for such solids. In the shape-factor method, a shape ...
DOI:
10.1021/acs.iecr.0c00155

19. Adapted Receptive Field Temporal Convolutional Networks with Bar-Shaped Structures Tailored to Industrial Process Operation Models

Author:
Wang, Yongjian; Zhang, Yichi; Li, Hongguang
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.13 pp. 5482-5490
ISSN:
1520-5045
Subject:
process design,   etc   ; algorithms; chemistry; neural networks; prediction; time series analysis;     Show all 6 Subjects
Abstract:
... Recurrent neural networks (RNNs) have been predominately employed to deal with industrial process operation modeling problems that are hard to be described by first-principles approaches. However, the substantial amount of iterative calculations in RNNs dramatically increases the training difficulty and reduces the speed of the network convergence. Thus, RNNs are an increasingly ineffective method ...
DOI:
10.1021/acs.iecr.9b06412

20. Hybrid Mechanistic-Empirical Approach to the Modeling of Twin Screw Feeders for Continuous Tablet Manufacturing

Author:
Bascone, Davide; Galvanin, Federico; Shah, Nilay; Garcia-Munoz, Salvador
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.14 pp. 6650-6661
ISSN:
1520-5045
Subject:
process design,   etc   ; equipment; manufacturing; models; pharmaceutical industry; powders; prediction; screws;     Show all 8 Subjects
Abstract:
... Nowadays, screw feeders are popular equipment in the pharmaceutical industry. However, despite the increasing research in the last decade in the manufacturing of powder-based products, there is still a lack of knowledge on the physics governing the dynamic behavior of these systems. As a result, data-driven models have often been used to address process design, optimization, and control applicatio ...
DOI:
10.1021/acs.iecr.0c00420