8 publications
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Design and Control of Acetaldehyde Production ProcessBy K. Nagamalleswara Rao, M. Venkata Ratnam, P. Rajendra Prasad, V. Sujatha
Abstract: This paper discusses the steady state and dynamic simulations of acetaldehyde production process by using Aspen Plus and Aspen Dynamics. The model developed in the present study is the modification of the process developed by Eastman Chemical Company of U.S. Patent 6,121,498. The proposed design consists of a FEHE (feed effluent heat exchanger), reactor, absorption column, compressors and two distillation columns. Acetic acid reacts with hydrogen and gives acetaldehyde as …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 1, 2014 · pp. 11–21 Read article →
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Design and Control of Acrylic Acid Production ProcessBy K. Nagamalleswara Rao, M. Venkata Ratnam, P. Rajendra Prasad, V. Sujatha
Abstract: This paper presents the design and control of acrylic acid production process using Aspen Plus and Aspen Dynamics. Propylene reacts with oxygen and produces acrylic acid and water. Plant-wide operability and control of the entire acrylic acid production plant with controllers is explained. The results indicate that the proposed process gives good dynamic performance (a settling time of less than 3 h).
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 1, 2014 · pp. 1–10 Read article →
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Design and Control of Acrolein Production ProcessBy K. Nagamalleswara Rao, G. Koteswara Reddy, M. VenkataRatnam, P. Rajendra Prasad, V. Sujatha
Abstract: In this study, the design and control of acrolein production plant has been investigated. The proposed design consists of a reactor and two distillation columns. Propylene reacts with oxygen and produces acrolein, acrylic acid, carbon dioxide and water. Plant wide operability and control of the entire acrolein production plant with decentralized controllers are explained. Tray temperature control loop and composition control loop are designed to infer final product purity. From …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 2, 2014 · pp. 27–34 Read article →
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Design and Energy Analysis of Butyl Acetate Plant using Aspen HYSYS and Aspen Energy AnalyzerBy K. Nagamalleswara Rao, G. Koteswara Reddy, P. Rajendra Prasad
Abstract: This paper discusses the design of Butyl acetate production process by using Aspen Hysys. Heat integration is performed for the entire designed plant using Aspen Energy Analyzer. The proposed design consists of a mixer, continuous stirred tank reactor and two distillation columns. Methyl acetate reacts with butyl alcohol and gives the butyl acetate, methanol. The paper is divided in to three parts. In the first part, the entire process plant …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 2, 2014 · pp. 15–26 Read article →
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Pinch Analysis of Acetone Production Process Using Aspen Energy AnalyzerBy K. Nagamalleswara Rao, G. Koteswara Reddy, P. Rajendra Prasad, V. Sujatha
Abstract: This article is divided into two parts. In the first part a process flow diagram for the production of Acetone was designed with Aspen HYSYS. Acetone obtained is 94.6% pure and the designed plant is safe to environment with less emissions. In the second part HEN (Heat exchanger networks) was developed for the process plant by performing pinch analysis using Aspen Energy Analyzer. Retrofit analysis was applied to find an …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 3, 2014 · pp. 25–33 Read article →
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Design and Pinch Analysis of Mono-Isopropyl Amine Production Process Using Aspen Plus and Aspen Energy AnalyzerBy K. Nagamalleswara Rao, G. Koteswara Reddy, P. Rajendra Prasad, V. Sujatha
Abstract: This paper presents the design of Mono-isopropyl amine production process. Process flow diagram is designed with Aspen Plus user interface. Mono-isopropyl amine obtained is of purity 100% and the designed plant is safe to environment with less emissions. After the design of the process pinch analysis is applied for the entire process by using Aspen Energy analyzer. From the extracted data using Aspen Energy Analyzer a HEN (Heat Exchanger Network) …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 3, 2014 · pp. 15–24 Read article →
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Design and Control of Ethyl Acetate Production ProcessBy K. Nagamalleswara Rao, M. Venkata Ratnam, G. Koteswara Reddy, P. Rajendra Prasad, V. Sujatha
Abstract: In this study, the design and control of ethyl acetate production plant has been investigated. The proposed design consists of a continuous-stirred tank reactor and two distillation columns. Ethanol reacts with acetic acid and gives ethyl acetate and water. Plant-wide operability and control of the entire process plant with decentralized controllers is explained by doing both steady state and dynamic simulations. Tray temperature control loop performance is tested for the …
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 1, 2015 · pp. 9–20 Read article →
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Recovery of Struvite from Java Plum LeavesBy P. Rajendra Prasad, Y. Lakshmi, K. Nagamalleswara Rao
Abstract: AbstractBio-degradation and leaching of java plum leaves liberates phosphate and can be recovered as struvite. Quantity of P2O5 obtained recoverable is 0.3009 g of P2O5/kg of leaves. Concentration of NaOH, ammonia, Magnesium sulphate was varied in aliquot. Process optimum variables were 12 g of 1N NaOH, 15 ml liquor ammonia, 5 g of magnesium sulphate yields 9.398 g of P2O5/kg of leave.
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 2, 2015 · pp. 5–14 Read article →