Economic Feasibility Of Mixed Plastic Waste Pyrolysis Using Twin Reactor System In Northwest Arkansas,
2021
University of Arkansas, Fayetteville
Economic Feasibility Of Mixed Plastic Waste Pyrolysis Using Twin Reactor System In Northwest Arkansas, Carol Rogers, Patricia Means, Renato Gonzalez, Kaida Sheets, Hayden Townsend
Chemical Engineering Undergraduate Honors Theses
Plastic waste generation is increasing at an unsustainable rate while recycling solutions remain stagnant. As a chemical means of recycling, mixed plastic waste pyrolysis can generate synthetic oil appropriate for use as fuel in power generation from plastic waste that otherwise accumulates in landfills. With the scaling of a commercial plastic pyrolysis process in Northwest Arkansas (NWA) modeled after an operational sawdust pyrolysis unit in Huntsville, Arkansas, economic analysis resulted in 26.3% internal rate of return. Therefore, construction of a commercial mixed plastic-to-fuel pyrolysis plant is economically justified and should be pursued. To effectively implement the proposed design, NWA must …
Economic Feasibility Of A Methanol To Dimethyl Ether Production Process To Avoid Contract Failure Shortfalls From The Covid-19 Pandemic,
2021
University of Mississippi
Economic Feasibility Of A Methanol To Dimethyl Ether Production Process To Avoid Contract Failure Shortfalls From The Covid-19 Pandemic, Jacob Noll, Robert Wasson, Harrison Mckinnis
Honors Theses
Our team entered the 2021 AVEVA Academic Competition, where teams of undergraduate senior chemical engineering students competed across the country. The competition was composed of two parts: the base case design and the optimization of a chemical process. As part of the competition, our team is acting as the Engineering team for a fictional company that has given us this project. Due to COVID-19, our methanol producing company has lost a contract with a customer, leaving 23,000 tonnes/yr of unclaimed methanol. We have two choices with this methanol: either sell the methanol on the market at the spot price for …
Machine Learning Representations For Optimization Of Process Systems,
2021
University of Arkansas, Fayetteville
Machine Learning Representations For Optimization Of Process Systems, Logan Watts
Chemical Engineering Undergraduate Honors Theses
The optimal operation of chemical processes provides the foundation for optimization problems to determine the most effective way to operate or design a given process. Chemical processes can be represented as nonlinear systems of equations with decision variables, resulting in a problem that can be solved through nonlinear solvers. The downfalls of nonlinear solvers create the need for improved methods of finding globally optimal solutions to the design or operation of a chemical process. The project will seek to evaluate the use of artificial neural networks to approximate nonlinear systems of equations for the purpose of optimizing chemical processes. The …
Development Of An Integrated Salt Cartridge-Reverse Electrodialysis (Red) Device To Increase Electrolyte Concentrations Of Human Blood Flow To Power Biomedical Devices,
2021
University of Arkansas, Fayetteville
Development Of An Integrated Salt Cartridge-Reverse Electrodialysis (Red) Device To Increase Electrolyte Concentrations Of Human Blood Flow To Power Biomedical Devices, Caroline Campbell
Chemical Engineering Undergraduate Honors Theses
Emerging technologies in nanotechnology and biomedical sciences have led to an increase in biomedical implantable devices including cardiac pacemakers, artificial organs, drug pumps, and sensors. These devices require continuous stable and reliable power to operate, which creates the demand for the need to find a safe, reliable, and stable power source. A promising avenue for a power source for these devices is a miniaturized reverse electrodialysis (RED) biopower cell design that utilizes the salinity differences between bloodstreams that flow inside the human body. Initial results of the RED system demonstrate that higher gradient salinity differences between streams lead to a …
Design, Analysis, And Optimization Of A Process To Produce Dimethyl Ether From Methanol,
2021
University of Mississippi
Design, Analysis, And Optimization Of A Process To Produce Dimethyl Ether From Methanol, Thomas Mathwig
Honors Theses
The company that the engineering team works for is facing a contract loss with one of its customers of methanol. To avoid economic losses, a process has been proposed for converting the unused methanol to dimethyl ether (DME) through a dehydration reaction. After a preliminary simulation of the base case and optimization of the distillation column, an Equivalent Annual Operating Cost (EAOC) of $140,000 was calculated for the column. The EAOC was the sum of the annualized capital investment and the annual operating cost. Determining the process to be worth pursuing, a Toller was brought in to provide rental equipment …
Peptoid Microsphere Coatings To Improve Performance In Sandwich Elisa Microarrays,
2021
University of Arkansas, Fayetteville
Peptoid Microsphere Coatings To Improve Performance In Sandwich Elisa Microarrays, Jesse L. Roberts, German R. Perez Bakovic, Shannon L. Servoss
Chemical Engineering Faculty Publications and Presentations
Enzyme-linked immunosorbent assay (ELISA) microarray performance is limited by low assay sensitivity and dynamic range. Increasing the surface area for reagent binding can help to improve performance, but standard techniques such as roughening the surface or adding a polymer coating lead to increased non-specific fluorescence and do not have reproducibly improved performance. Another approach to increase surface area is adding a microsphere coating on the surface. Poly-N-substituted glycine (peptoid) microspheres are ideal for this application due to low immunogenicity, protease-resistance, and biocompatibility. Peptoids are polymers with a backbone similar to peptides, but with the side chains appended to nitrogen rather …
Anomaly-Handling In Lyapunov-Based Economic Model Predictive Control Via Empirical Models,
2021
Wayne State University
Anomaly-Handling In Lyapunov-Based Economic Model Predictive Control Via Empirical Models, Helen Durand
Chemical Engineering and Materials Science Faculty Research Publications
A question that faces data-driven autonomous systems is verification that they will perform in a safe manner despite changes in the environment on which they act over time or incomplete knowledge of the system model. This work analyzes closed-loop stability of nonlinear systems under Lyapunov-based economic model predictive control (LEMPC) with data-driven models in the case where it is desirable to have the ability to detect when the data-driven model is or becomes insufficiently accurate for maintaining the closed-loop state in an expected region of state-space. Implications of the results for false sensor measurement cyberattacks seeking to impact the fidelity …
Synthesis Of Control Systems For Multidimensional Dynamic Objects Under Parametric Uncertainty Based On The Invariance Theory,
2021
Associate Professor, Department of Information Processing Systems and Control, Tashkent State Technical University, Address: 2 Universitetskaya st., 100095, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone: (90) 900-56-25).
Synthesis Of Control Systems For Multidimensional Dynamic Objects Under Parametric Uncertainty Based On The Invariance Theory, U.F Mamirov
Chemical Technology, Control and Management
The problems of synthesis of control systems for multidimensional dynamic objects in the conditions of parametric uncertainty which are based on invariance theory are considered. When constructing stable synthesis algorithms, a recurrent method for determining pseudo-solutions of linear algebraic systems of equations is used. Computational algorithms for the solution based on singular matrix expansions are given. These computational procedures allow us to regularize the problem of synthesis of the considered algorithms for the synthesis of control systems for multidimensional dynamic objects under conditions of parametric uncertainty and improve the quality indicators of control processes.
Intellectual Educational Technologies Of Coherent Maintenance Of Digital Transformations,
2021
Doctor Phys.-Math. sciences, professor, Director of the Belarusian-Uzbek Interdisciplinary Institute of Applied Technical Qualifications, Minsk-Tashkent, Belarus Phone.: +375 296 663804
Intellectual Educational Technologies Of Coherent Maintenance Of Digital Transformations, Igor Ivanovich Gancherenok, Ulugbek Mannanov, A.G. Davydovsky, Yu.A. Chernyavsky
Chemical Technology, Control and Management
The problems of forming adequate educational technologies and supporting digital transformations for the formation and development of relevant professional competencies as innovative receptivity are interpreted. The fundamental principles of educational technologies that act as a catalyst for educational innovations in the context of digital transformation of economic and social processes are described. The main modern educational platforms of educational support of professional activity are analyzed. The author's interpretation of the synergetic effects in the education system, as well as loans as an educational cryptocurrency is suggested.
Estimating The Bubbling Process Of Ozone-Containing Gases In The Water,
2021
Tashkent State Agrarian University, Address:2 University st.,100110, Tashkent city, Republic of Uzbekistan Phone: +998 981017350.
Estimating The Bubbling Process Of Ozone-Containing Gases In The Water, M.P. Parpiev, А.А. Simonov, Aleksey Kamardin, Abdulaziz M. Nazarov
Chemical Technology, Control and Management
Theoretical estimates were made and significant factors of dissolution of ozone-containing gases in water during bubbling in tanks were determined. The expediency of using microbubbles for more efficient saturation of water and aqueous solutions with ozone and generation of ozone with maximum concentration is shown. It is shown that when bubbling gas in water, including ozone-containing gas, the most important indicator is the volume gas content, which determines the ratio of the volume of the gas phase to the volume of the gas-liquid mixture in the contact apparatus. In the presence of a set of bubbles in the water, the …
To Increasing The Absorption Area Of Column Apparatus With Tubular Lattice Nozzles,
2021
Doctor of technical scienses, professor, Tashkent Chemical Technological Institute, Tashkent, Republic of Uzbekistan, Phone:+998974009701;
To Increasing The Absorption Area Of Column Apparatus With Tubular Lattice Nozzles, Nurmukhamedov Habibulla Sagdullaevich, Batir Babatulaev, Elbek Mavlanov, Samukdjan Nigmadjanov
Chemical Technology, Control and Management
The problem of creating a compact refrigeration zone for absorbers with tubular-lattice nozzles made of pipes with spiral turbulators is discussed. Research has been carried out on the influence of the groove depth h/D and α/αгл of the step of their placement t/D on the degree of heat transfer intensification α/αо in the transition region of the gas-liquid flow. An intensification of heat transfer has been achieved only by increasing the groove depth from h/D = 0,003 to 0,095 and the optimal pitch of the grooves, the intensity of heat transfer is 2 or more times. Research has …
Study Of The Rheological Properties Of The Suspension Formed During The Production Of Caustic Soda By The Lime Method,
2021
Professor Department Chemical technologies of inorganic substances Tashkent Chemical Technology Institute, Tashkent city, Republic of Uzbekistan, E-mail: [email protected]
Study Of The Rheological Properties Of The Suspension Formed During The Production Of Caustic Soda By The Lime Method, Aktam Ulashovich Erkaev, Dildora Tursunova
Chemical Technology, Control and Management
The process of obtaining sodium hydroxide - caustic soda by conversion of soda ash with lime milk in the presence of natural mirabilite - has been investigated. The influence of temperature, Na2CO3: Na2SO4 ratio, concentration of lime milk and duration of the conversion process on this process was studied by identifying their optimal values. The study of the rheological properties of the reaction pulp showed that it is mobile and well filtered, which makes it possible to obtain rapidly settling large crystals of Na2CO3·2Na2SO4, Na …
Development Of A New Technology For Obtaining The Substance Of The Drug Acetamizole,
2021
Academy of Sciences Republic of Uzbekistan Acad. S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Bd. 77 Mirzo Ulugbek st., 100170, Tashkent. E-mail: [email protected]
Development Of A New Technology For Obtaining The Substance Of The Drug Acetamizole, Sarvar Saidov, Asqar Abdurazakov, Rixsibay Karimov, Mavluda Baltabayeva
Chemical Technology, Control and Management
The main goal of this work is to obtain a preparation of acetamizole based on local raw materials by a more convenient method of acylation of 2-methoxycarbonylaminobenzimidazole with glacial acetic acid, this synthesis method is proposed for the first time. On the basis of the conducted experiments, favorable conditions for the reaction were found, the influence of the nature of the acid, the temperature, the duration of the reaction and other factors on the course of the reaction was studied, the technology was developed and implemented at the experimental production of "IHRV AN RUz". Based on experiments conducted by scientists …
Mathematical Model Of A System For Controlling And Diagnosing The Safety State Of Oil And Gas Territory,
2021
Doctor of Technical Sciences, Professor, Department of Information Processing Systems and Management, Tashkent State Technical University. Tashkent city, Republic of Uzbekistan,Tel .: (99) 919-71-64 (m.),
Mathematical Model Of A System For Controlling And Diagnosing The Safety State Of Oil And Gas Territory, Erkin Uljaev, Utkirjon Murodillaevich Ubaydullaev, Gayrat Bakhtiyarovich Tadzhitdinov, Sherzod Kholmuminovich Eshkuvatov
Chemical Technology, Control and Management
In this article, the way of creation mathematical model of a control system and diagnostics of the security status of the oil and gas territory is considered. For performing diagnostics of the safety of a status of the oil and gas territory as a mathematical apparatus it is suggested to use a boolean algebra. The main controlled objects and their technological parameters which define safety, integrity of saving, operational carrying out monitoring status as separate objects and all oil and gas territory, prediction of the expected threats, economic social, and economic damage are selected. For the creation of a mathematical …
Mathematical Models Of New Magnetoelastic Sensor For Measure Of Power And Vibration Parameters,
2021
Tashkent State Transport University Address: 1 Odilhodjaev st., 100167, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone: +998903251116.
Mathematical Models Of New Magnetoelastic Sensor For Measure Of Power And Vibration Parameters, Javhar Sulton Ugli Fayzullayev
Chemical Technology, Control and Management
In the paper, the mathematical models of the new magnetoelastic sensor for measuring power and vibration parameters are developed taking into account the aggregation or scattering of the parameters of electromagnetic chains and the characteristics of the magnetization curve of the magnetic conductor material. The analysis of the generated mathematical models and graphs based on them showed that the magnetic chain in which the coils are assembled does not take into account the nonlinearity of the magnetization curve of the magnetic conductive material (electrotechnical steel), the result is 12 ÷ 15% of the experimental results. It varies by 6 ÷ …
Methodology For Determination And Assessment Of Uncertainty Sources Of Textile Materials Total Thermal Resistance,
2021
Uzbek Agency for standardization, metrology and certification Adress: 333-a, Farobiy st., 100049, Tashkent city, Republic of Uzbekistan, E-mail: [email protected], Phone: +998-98-368-07-37
Methodology For Determination And Assessment Of Uncertainty Sources Of Textile Materials Total Thermal Resistance, Abdurauf Abdurashidovich Abdukayumov, Ortagoli Sharipovich Hakimov
Chemical Technology, Control and Management
The problems of improving of methods for determination of the total thermal resistance of textile materials are considered. A comparative analysis of the applied methods based on stationary and non-stationary heat exchange is performed. A higher accuracy of non-stationary methods based on measuring the cooling time of a heat cell with subsequent determination of the cooling rate and the total thermal resistance of the material under study is noted. A method is proposed for estimating the variance of the main values required for calculating the total thermal resistance of materials. The results of the study of the relationship between sources …
Analysis Of Consistency Of Similarity Predicates To Measures Of Similarity And Advantages Of Their Application In Digital Systems For Solving Intellectual Problems,
2021
Tashkent State Technical University Address: 2 Universitetskaya st., 100095, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone: +998 90-187-01-73
Analysis Of Consistency Of Similarity Predicates To Measures Of Similarity And Advantages Of Their Application In Digital Systems For Solving Intellectual Problems, Makhmudjon Abdullaev, Nodira Batirdjanovna Alimova
Chemical Technology, Control and Management
The results of the analysis of the correspondence of similarity predicates to similarity measures used in various metric methods used for signal classification and the feasibility of using similarity predicates in the construction of digital systems for solving intellectual problems, for which the simplification of computational operations is of no small importance, are presented. Some general and distinctive features of the similarity predicate are considered in comparison with the euclidean metric in relation to one-dimensional and two-dimensional spaces, and generalized to the case of n-dimensional metric spaces. The expediency of using methods based on the calculation of similarity predicates, which …
Calculate The Reliability Of The Bts-Bsc Network With The Reserved Line Connection,
2021
Tashkent University of Information Technologies Named after Muhammad Al-Khwarizmi, Tashkent city, Republic of Uzbekistan
Calculate The Reliability Of The Bts-Bsc Network With The Reserved Line Connection, Dilmurod Davronbekov, Utkir Karimovich Matyokubov
Chemical Technology, Control and Management
The issue of reserving communication lines between the base station and the mobile network base station controller which are considered as one system is considered. Analytical expressions have been developed for calculating the reliability of the system for various options for backing up communication lines between the base station and the base station controller. The results of research and calculations of reliability for ten different types of backup communication lines of the base station and the base station controller are presented.
Mathematical Modeling Of The 3(Н)-Quinazolin-4-Onе
Synthesis Process,
2021
Institute of the Chemistry of Plant Substaces
Mathematical Modeling Of The 3(Н)-Quinazolin-4-Onе Synthesis Process, Ziyadullayev Mirjalol, Karimov Rikhsibay, Abdurazakov Asqar, Parmonov Asqar
CHEMISTRY AND CHEMICAL ENGINEERING
The aim is to optimize the conditions for the synthesis of 3(H)-quinazolin-4-one by the method of mathematical modeling to develop a technology for producing the substance of a new domestic drug used in the treatment of farm animals from helminths. In mathematical modeling, the method of a small number of squares was used. Analytical dependences of the product yield on temperature, reaction time, and molar ratios of the starting materials were determined. A system of linear equations has been compiled. The system of linear equations was performed by the matrix method (A, B, C).The average reaction rate was determined. Based …
Study Of The Influence Of Construction And Mode Parameters On The Hydrodynamics Of A Hollow Vortex Apparatus,
2021
Navoi State Mining Institute
Study Of The Influence Of Construction And Mode Parameters On The Hydrodynamics Of A Hollow Vortex Apparatus, Bakhronov Khoshim, Akhmatov Abdumalik, Juraev Dadakhon
CHEMISTRY AND CHEMICAL ENGINEERING
The research was to determine the more efficient design of the swirler from the point of view of hydrodynamics and heat and its optimal parameters. Various swirl designs were manufactured and tested. After preliminary studies conducted on a laboratory installation with a glass working apparatus, several swirlers were selected taking into account their hydraulic resistance, the structure of the swirling gas-liquid flow, and the amount of liquid entrainment by gas. The results of an experimental study of the hydrodynamics of a hollow vortex apparatus with one and two tangential and axial swirlers. Hydraulic losses in the channel and in the …
