Ranjan Malik | Indian Institute of Technology Bombay (original) (raw)

Papers by Ranjan Malik

Research paper thumbnail of Feed Preheat Targeting to Minimize Energy Consumption in Distillation

ABSTRACT

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Research paper thumbnail of Simulator for Process Analysis and Design: SPAD

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Research paper thumbnail of FUEL 46-Process alternatives for Fischer Tropsch synthesis of CO (2) rich syngas

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Research paper thumbnail of Program Description

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Research paper thumbnail of SPAD: Simulator for Process Analysis and Design

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Research paper thumbnail of Solution multiplicity in multicomponent distillation a computational study

Computer Aided Chemical Engineering, 2003

Rigorous models of staged distillation processes are formulated by setting up material balance eq... more Rigorous models of staged distillation processes are formulated by setting up material balance equations, equilibrium relations, summation equations, and enthalpy balance equations (MESH equations). In these models, the extent of nonlinearity may be very severe, particularly for azeotropic and reactive distillation systems. MESH system based mathematical models can thus yield multiple solutions (multiple steady states), a fact which has been

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Research paper thumbnail of A Design methodology for Internally HeatIntegrated Distillation Columns (IHIDiC) with side condensers and side reboilers (SCSR)

Computer Aided Chemical Engineering, 2011

Abstract Distillation is the most widely used but an energy-intensive separation technology which... more Abstract Distillation is the most widely used but an energy-intensive separation technology which consumes huge amount of thermal energy as a separating agent. Because of low thermal efficiencies of distillation columns, various energy integration methods have been explored in the past in order to reduce the energy requirements for a given separation task. Among them, Internally Heat Integrated Distillation Columns (IHIDiC), in which the rectification zone of the column is at a higher pressure than the stripping zone, are reported to be the best alternative to the conventional columns that give up to 50% energy savings when the rectifying and stripping zones are configured in an annular fashion. However, the structural complexity of IHIDiC draws one’s attention to search for an alternative which involves minimum design effort. In this work, a methodology has been proposed for an IHIDiC with side condensers and side reboilers (SCSR). This configuration introduces minimum structural complexity as the integrated side condensers and side reboilers are external to the columns. The side reboilers of the stripping column are driven by the side condensers of the rectifying column. The problem, however, is to determine the number of such units, their heat loads, and their locations that lead to an optimal design. Thus, a design methodology based on the well known Column Grand Composite Curves (CGCC) has been proposed algorithmically and tested on two separation problems of close-boiling mixtures, namely, Propane-Propylene and Styrene-Ethyl Benzene splitters. A case study of a multi-component mixture has also been analysed. Economic evaluation studies show that the optimized configuration of the IHIDiC with SCSR for the close-boiling mixtures resulted in attractive payback periods and significant savings in operating expenses. The energy savings in the case study of multi-component system, however, is less attractive due to much higher capital investment.

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Research paper thumbnail of A Conceptual Design Algorithm for Single-Feed Hybrid Reactive Distillation Column involving azeotropic systems

Computer Aided Chemical Engineering, 2013

Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageousl... more Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageously used to obtain desired selectivities in case of multi-reaction system. In case of azeotropic systems, the presence of complex vapor liquid equilibrium and distillation boundaries, shrink the feasible stage composition region and thereby increase design complexity for RD systems. Therefore an attempt is made here to develop a conceptual design algorithm based on boundary value method for the synthesis of single feed hybrid reactive distillation (HRD) column to obtain desired selectivities in case of single reactant complex reaction scheme (vande Vusse reaction) involving azeotropic systems. This work is the continuation of our earlier work on ideal multicomponent system ( Hasan et al., 2013 ). We believe that the conceptual design algorithm developed here can be extended to more complex schemes involving multiple reactants.

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Research paper thumbnail of Feed Preconditioning Targets for Distillation through Invariant Rectifying−Stripping Curves

Industrial & Engineering Chemistry Research, 2003

... Santanu Bandyopadhyay. Energy Systems Engineering, Department of Mechanical Engineering, Indi... more ... Santanu Bandyopadhyay. Energy Systems Engineering, Department of Mechanical Engineering, Indian Institute of Technology, Powai, Bombay 400 076, India. Ranjan K. Malik. Computer Aided Design Centre and Department of Chemical Engineering, Indian Institute of ...

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Research paper thumbnail of A Conceptual Design Algorithm for Single-Feed Hybrid Reactive Distillation Column involving azeotropic systems

Computer Aided Chemical Engineering, 2013

Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageousl... more Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageously used to obtain desired selectivities in case of multi-reaction system. In case of azeotropic systems, the presence of complex vapor liquid equilibrium and distillation boundaries, shrink the feasible stage composition region and thereby increase design complexity for RD systems. Therefore an attempt is made here to develop a conceptual design algorithm based on boundary value method for the synthesis of single feed hybrid reactive distillation (HRD) column to obtain desired selectivities in case of single reactant complex reaction scheme (vande Vusse reaction) involving azeotropic systems. This work is the continuation of our earlier work on ideal multicomponent system ( Hasan et al., 2013 ). We believe that the conceptual design algorithm developed here can be extended to more complex schemes involving multiple reactants.

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Research paper thumbnail of Selectivity Engineering with Reactive Distillation for Dimerization of C4 Olefins:  Experimental and Theoretical Studies

Industrial & Engineering Chemistry Research

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Research paper thumbnail of A Validated Reverse Phase HPLC Technique for the Determination of TATB Assay

Central European Journal of Energetic Materials, 2016

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Research paper thumbnail of Experimental Determination of NH3 Solubility in Toluene at Pressures up to 340 kPa at 398 K

Journal of Solution Chemistry, 2014

ABSTRACT The solubility of ammonia in toluene has been measured at 398 K and at pressures up to 3... more ABSTRACT The solubility of ammonia in toluene has been measured at 398 K and at pressures up to 340 kPa using a static, synthetic and isochoric technique. The goal of the present study is to determine the equilibrium solubility of ammonia in toluene at a pressure and temperature regime that is relevant to the reaction conditions of amination of 1,3,5-trichloro-2,4,6-trinitrobenzene leading to the formation of 1,3,5-triamino-2,4,6-trinitro benzene. The ammonia solubility data in toluene were hitherto unavailable under these experimental conditions. The solubility data have also been compared with the result obtained from a direct sampling method. The results are in agreement with Krichevsky–Kasarnovsky equation. The Henry’s law constant at the reaction temperature has been determined.

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Research paper thumbnail of Strategies for Identifying Multiplicities in Distillation Systems using Process Simulators

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Research paper thumbnail of Selectivity Engineering with Simple and Complex Hybrid Reactive Distillation Columns

Industrial & Engineering Chemistry Research, 2014

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Research paper thumbnail of Efficient feed preheat targeting for distillation by feed splitting

Computer Aided Chemical Engineering, 2005

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Research paper thumbnail of Selectivity engineering with single feed multi-side draw hybrid reactive distillation columns

Chemical Engineering Journal, 2015

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Research paper thumbnail of Reactive Distillation for Fischer−Tropsch Synthesis: Feasible Solution Space

Industrial & Engineering Chemistry Research, 2010

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Research paper thumbnail of Feasibility of Reactive Distillation for Fischer−Tropsch Synthesis

Industrial & Engineering Chemistry Research, 2008

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Research paper thumbnail of Fischer-Tropsch synthesis using bio-syngas and CO2

Energy for Sustainable Development, 2007

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Research paper thumbnail of Feed Preheat Targeting to Minimize Energy Consumption in Distillation

ABSTRACT

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Research paper thumbnail of Simulator for Process Analysis and Design: SPAD

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Research paper thumbnail of FUEL 46-Process alternatives for Fischer Tropsch synthesis of CO (2) rich syngas

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Program Description

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Research paper thumbnail of SPAD: Simulator for Process Analysis and Design

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Solution multiplicity in multicomponent distillation a computational study

Computer Aided Chemical Engineering, 2003

Rigorous models of staged distillation processes are formulated by setting up material balance eq... more Rigorous models of staged distillation processes are formulated by setting up material balance equations, equilibrium relations, summation equations, and enthalpy balance equations (MESH equations). In these models, the extent of nonlinearity may be very severe, particularly for azeotropic and reactive distillation systems. MESH system based mathematical models can thus yield multiple solutions (multiple steady states), a fact which has been

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Design methodology for Internally HeatIntegrated Distillation Columns (IHIDiC) with side condensers and side reboilers (SCSR)

Computer Aided Chemical Engineering, 2011

Abstract Distillation is the most widely used but an energy-intensive separation technology which... more Abstract Distillation is the most widely used but an energy-intensive separation technology which consumes huge amount of thermal energy as a separating agent. Because of low thermal efficiencies of distillation columns, various energy integration methods have been explored in the past in order to reduce the energy requirements for a given separation task. Among them, Internally Heat Integrated Distillation Columns (IHIDiC), in which the rectification zone of the column is at a higher pressure than the stripping zone, are reported to be the best alternative to the conventional columns that give up to 50% energy savings when the rectifying and stripping zones are configured in an annular fashion. However, the structural complexity of IHIDiC draws one’s attention to search for an alternative which involves minimum design effort. In this work, a methodology has been proposed for an IHIDiC with side condensers and side reboilers (SCSR). This configuration introduces minimum structural complexity as the integrated side condensers and side reboilers are external to the columns. The side reboilers of the stripping column are driven by the side condensers of the rectifying column. The problem, however, is to determine the number of such units, their heat loads, and their locations that lead to an optimal design. Thus, a design methodology based on the well known Column Grand Composite Curves (CGCC) has been proposed algorithmically and tested on two separation problems of close-boiling mixtures, namely, Propane-Propylene and Styrene-Ethyl Benzene splitters. A case study of a multi-component mixture has also been analysed. Economic evaluation studies show that the optimized configuration of the IHIDiC with SCSR for the close-boiling mixtures resulted in attractive payback periods and significant savings in operating expenses. The energy savings in the case study of multi-component system, however, is less attractive due to much higher capital investment.

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Research paper thumbnail of A Conceptual Design Algorithm for Single-Feed Hybrid Reactive Distillation Column involving azeotropic systems

Computer Aided Chemical Engineering, 2013

Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageousl... more Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageously used to obtain desired selectivities in case of multi-reaction system. In case of azeotropic systems, the presence of complex vapor liquid equilibrium and distillation boundaries, shrink the feasible stage composition region and thereby increase design complexity for RD systems. Therefore an attempt is made here to develop a conceptual design algorithm based on boundary value method for the synthesis of single feed hybrid reactive distillation (HRD) column to obtain desired selectivities in case of single reactant complex reaction scheme (vande Vusse reaction) involving azeotropic systems. This work is the continuation of our earlier work on ideal multicomponent system ( Hasan et al., 2013 ). We believe that the conceptual design algorithm developed here can be extended to more complex schemes involving multiple reactants.

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Research paper thumbnail of Feed Preconditioning Targets for Distillation through Invariant Rectifying−Stripping Curves

Industrial & Engineering Chemistry Research, 2003

... Santanu Bandyopadhyay. Energy Systems Engineering, Department of Mechanical Engineering, Indi... more ... Santanu Bandyopadhyay. Energy Systems Engineering, Department of Mechanical Engineering, Indian Institute of Technology, Powai, Bombay 400 076, India. Ranjan K. Malik. Computer Aided Design Centre and Department of Chemical Engineering, Indian Institute of ...

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Research paper thumbnail of A Conceptual Design Algorithm for Single-Feed Hybrid Reactive Distillation Column involving azeotropic systems

Computer Aided Chemical Engineering, 2013

Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageousl... more Abstract Reactive Distillation (RD) which combines reaction and distillation can be advantageously used to obtain desired selectivities in case of multi-reaction system. In case of azeotropic systems, the presence of complex vapor liquid equilibrium and distillation boundaries, shrink the feasible stage composition region and thereby increase design complexity for RD systems. Therefore an attempt is made here to develop a conceptual design algorithm based on boundary value method for the synthesis of single feed hybrid reactive distillation (HRD) column to obtain desired selectivities in case of single reactant complex reaction scheme (vande Vusse reaction) involving azeotropic systems. This work is the continuation of our earlier work on ideal multicomponent system ( Hasan et al., 2013 ). We believe that the conceptual design algorithm developed here can be extended to more complex schemes involving multiple reactants.

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Research paper thumbnail of Selectivity Engineering with Reactive Distillation for Dimerization of C4 Olefins:  Experimental and Theoretical Studies

Industrial & Engineering Chemistry Research

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Research paper thumbnail of A Validated Reverse Phase HPLC Technique for the Determination of TATB Assay

Central European Journal of Energetic Materials, 2016

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Research paper thumbnail of Experimental Determination of NH3 Solubility in Toluene at Pressures up to 340 kPa at 398 K

Journal of Solution Chemistry, 2014

ABSTRACT The solubility of ammonia in toluene has been measured at 398 K and at pressures up to 3... more ABSTRACT The solubility of ammonia in toluene has been measured at 398 K and at pressures up to 340 kPa using a static, synthetic and isochoric technique. The goal of the present study is to determine the equilibrium solubility of ammonia in toluene at a pressure and temperature regime that is relevant to the reaction conditions of amination of 1,3,5-trichloro-2,4,6-trinitrobenzene leading to the formation of 1,3,5-triamino-2,4,6-trinitro benzene. The ammonia solubility data in toluene were hitherto unavailable under these experimental conditions. The solubility data have also been compared with the result obtained from a direct sampling method. The results are in agreement with Krichevsky–Kasarnovsky equation. The Henry’s law constant at the reaction temperature has been determined.

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Research paper thumbnail of Strategies for Identifying Multiplicities in Distillation Systems using Process Simulators

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Selectivity Engineering with Simple and Complex Hybrid Reactive Distillation Columns

Industrial & Engineering Chemistry Research, 2014

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Research paper thumbnail of Efficient feed preheat targeting for distillation by feed splitting

Computer Aided Chemical Engineering, 2005

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Research paper thumbnail of Selectivity engineering with single feed multi-side draw hybrid reactive distillation columns

Chemical Engineering Journal, 2015

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Research paper thumbnail of Reactive Distillation for Fischer−Tropsch Synthesis: Feasible Solution Space

Industrial & Engineering Chemistry Research, 2010

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Research paper thumbnail of Feasibility of Reactive Distillation for Fischer−Tropsch Synthesis

Industrial & Engineering Chemistry Research, 2008

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Research paper thumbnail of Fischer-Tropsch synthesis using bio-syngas and CO2

Energy for Sustainable Development, 2007

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