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Article
Open AccessCorrection to: A dynamic soft sensor based on hybrid neural networks to improve early off-spec detection
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Article
Open AccessA Dynamic Soft Sensor Based on Hybrid Neural Networks to Improve Early Off-spec Detection
Soft sensors are widely used to predict hard-to-measure quality variables in industrial processes. For efficient quality control, prediction of quality dynamics is essential to prevent off-specification produc...
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Article
Development of a hazardous material selection procedure for the chemical accident response manual
After the accidental hydrogen-fluoride leak in Gu-mi city, Korea, the Korean government revised its laws on chemical management. The hazardous chemical management laws were strengthened to meet the legal stand...
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Article
A novel system dynamics model for forecasting naphtha price
Fluctuations in naphtha price are directly related to the profit of petrochemical companies. Thus, forecasting of naphtha price is becoming increasingly important. To respond to this need, a naphtha crack (the...
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Article
Analysis of air blast effect for explosives in a large scale detonation
Open Burning/Open Detonation (OB/OD) has been widely used for demilitarization of expired explosives. However, OB/OD effects a variety of hazardous damages to environment. Therefore, using incinerators to trea...
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Article
Kriging models for forecasting crude unit overhead corrosion
Crude unit overhead corrosion is a major issue in the refinery field. However, the corrosion models in the literature are difficult to apply to real refinery processes due to the characteristics of corrosion. ...
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Article
Measurement and correlation of excess molar volumes for mixtures of 1-propanol and aromatic hydrocarbons
Excess molar volumes (V m E ) have been measured at 303.15 K for 1-propanol+benzene or toluene or o- or m- or p-xylene mixture...
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Article
Web-based multi-dimensional education system for the simulated moving bed process
This paper describes the development of an operator-education program for a simulated moving bed (SMB) pilot plant that separates para-xylene isomer from mixed xylenes. The education program was motivated from...
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Article
Design and analysis of multi-stage expander processes for liquefying natural gas
Multi-stage expander refrigeration cycles were proposed and analyzed in order to develop an efficient natural gas liquefaction process. The proposed dual and cascade expander processes have high efficiency and...
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Article
Integration of qualitative and quantitative risk assessment methods for gas refinery plants
This paper focuses on the development of an integrated risk assessment system to increase the safety of gas refinery plants. This integration is important in managing the design and the operation of chemical p...
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Article
Volumetric Properties of 1,3-Dioxolane + Toluene + o- or p-Xylene Ternary Mixtures at 25.00 °C and Atmospheric Pressure
Excess molar volumes, \( V_{123}^{\text{E}} \)
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Article
Development of COI classification algorithm for chemical terrorism
This study focused on a novel approach for classifying hazardous chemicals to be used for chemical terrorism. We developed a novel algorithm to classify nationally customized chemicals of interest (COI) out of...
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Article
Development of a web-based emergency preparedness plan system in Korea
The chemical industry treats a huge quantity of hazardous and harmful flammable liquids, combustible gases and toxic materials. Therefore, there is a high potential for fires, conflagrations, explosions and to...
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Article
Automatic verification of operating schedules for batch processes using symbolic model checking: Latch model vs. real-time
This study proposes two models for reading Gantt charts and finding embedded errors in the operating schedules of batch processes. Two automatic techniques for finding errors, a real-time model and a latch mod...
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Article
Thermodynamic Investigation of Molecular Interactions in 1,3-Dioxolane or 1,4-Dioxane+Benzene or Toluene+Formamide or +N,N-Dimethylformamide Ternary Mixtures at 308.15 K and Atmospheric Pressure
Excess molar volumes, \(V^{\mathrm{E}}_{123}\) of 1,3-dioxolane or 1,4-dioxane (1) + benzene or toluene (2) + formamide...
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Article
Development of a risk assessment program for chemical terrorism
The study focuses on assessing the security risk of the terrorism in the chemical industry. This research modifies conventional risk assessment methods for including terrorism and sabotage scenarios. The objec...
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Article
Development of a new automatic system for fault tree analysis for chemical process industries
The main purpose of this study was to develop a computer automated tool for fault tree analysis (FTA) in order to minimize the flaws of manual FTA. The automated FTA system developed in this study consists of ...
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Article
Synthesis and applications of unsaturated polyester resins based on PET waste
Three types of unsaturated polyester resins were synthesized from the glycolysis of polyethylene terephthalate (PET) plastic waste, considering environment, cost and properties for their applications. These sy...
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Article
Integrated water resource management through water reuse network design for clean production technology: State of the art
This article considers new and existing technologies for water reuse networks for water and wastewater minimization. For the systematic design of water reuse networks, the theory of the water pinch methodology...
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Article
Gas management in flow field design using 3D direct methanol fuel cell model under high stoichiometric feed
This study presents a 3D CFD model for modeling gas evolution in anode channels of a DMFC under high stoichiometric feed. The improved two-phase model includes a new submodel for mass source and interphase tra...
