4 Chapter 4Figure 4.1 Schematic defining the length scales of interest associated to th...Figure 4.2 Experimental challenges that restraint the elucidation toward con...Figure 4.3 Time and distance in multiscale modeling of membrane [12].Figure 4.4 Preparation of PSF polymeric layer [35].Figure 4.5 Methodology and basis to elucidate mixed gas (a) diffusivity, (b)...Figure 4.6 Schematic representation of process flow in Aspen HYSYS to study ...Figure 4.7 Economic parameters involved in computation of IRR for process ec...Figure 4.8 Gas transport properties of ∼500 Å ultrathin PSF films under vary...Figure 4.9 Effect of thickness upon confinement toward O2 permeance (mixed g...Figure 4.10 Effect of thickness upon confinement toward N2 permeance (mixed ...Figure 4.11 Sorption sites and density distribution, shown in red and green ...Figure 4.12 Prediction of macroscopic membrane separation performance, which...Figure 4.13 Membrane area requirement to achieve product quality of 90% reco...Figure 4.14 Effect of operating conditions to the stage cut of ultrathin pol...Figure 4.15 Effect of operating conditions to the compressor power of ultrat...Figure 4.16 Effect of operating conditions to the product recovery of ultrat...Figure 4.17 Effect of operating conditions to the turbine power of ultrathin...Figure 4.18 Effect of operating conditions to the IRR of ultrathin polymeric...
5 Chapter 5Figure 5.1 Illustration of membrane electrocoagulation flocculation where (a...Figure 5.2 Effect of NaCl loading and energy input on dye removal efficiency...Figure 5.3 Effect of electrocoagulation time on dye removal (a) and flux in ...Figure 5.4 Comparison between dye removal efficiency in ECF and MECF using 1...Figure 5.5 Biomass concentration produced using perforated and membrane aera...Figure 5.6 Preliminary static force analysis on bubble formed through membra...Figure 5.7 Conceptual bubble formation under different surface wettability a...Figure 5.8 Impact of hydrophilic coating (PEBAX®) at different concentration...Figure 5.9 Forward osmosis process.Figure 5.10 Alternatives of draw solution regeneration methods of FO using (...Figure 5.11 Integrated FO membrane with an electrolysis unit.Figure 5.12 Experimental lab setup for forward osmosis–electrolysis unit....Figure 5.13 Performance of forward osmosis (FO) unit with non‐circulated (on...Figure 5.14 Performances of the FO–electrolysis unit with draw solution init...Figure 5.15 Future possible application of integrated forward osmosis–electr...
6 Chapter 6Figure 6.1 Conceptual design of HIDiC.Figure 6.2 Heat panels in the stripping section.Figure 6.3 Cross section of HIDiC with heat panels in the stripping section....Figure 6.4 Hierarchy for HIDiC design.Figure 6.5 Design procedure of HIDiC with constant heat transfer area per st...Figure 6.6 HIDiC basic design configuration (8 trays in stripping column and...Figure 6.7 Heat transfer between stages for top‐integrated column configurat...Figure 6.8 Heat transfer between stages for bottom‐integrated column configu...Figure 6.9 Geometrical analysis of concentric HIDiC configuration.Figure 6.10 Bottom‐integrated column configuration.
7 Chapter 7Figure 7.1 The vapor compression heat pump system.Figure 7.2 Pinch location is unchanged after setting a heat pump.Figure 7.3 GCC with a pinch interval below the original pinch after placing ...Figure 7.4 GCC with decreased pinch temperature after placing a heat pump: (...Figure 7.5 A heat pocket exists below the original pinch and GCC with decrea...Figure 7.6 GCC with a pinch interval above the original pinch after placing ...Figure 7.7 GCC with increased pinch temperature after placing a heat pump: (...Figure 7.8 A heat pocket exists above the original pinch and GCC with increa...Figure 7.9 Heat integration based on the increased pinch temperature: (a) ba...Figure 7.10 Heat integration based on the increased pinch temperature (a hea...Figure 7.11 Heat integration based on the decreased pinch temperature: (a) b...Figure 7.12 Heat integration based on the decreased pinch temperature (a hea...Figure 7.13 Heat integration with no change in pinch temperature.Figure 7.14 Example for identifying the operating parameters of heat pump.Figure 7.15 Determining the streams to be integrated with heat pump.Figure 7.16 Identification of heat pump placement based on GCC: (a) determin...Figure 7.17 Improvement of heat pump placement.Figure 7.18 Resulting network after implementing the heat integration.
8 Chapter 8Figure 8.1 Interactions between HEN and reactor.Figure 8.2 An HRPD with hot and cold composite curves.Figure 8.3 Variation of hot and cold composite curves when temperatures of S...Figure 8.4 Procedure for determining the new composite curves and energy con...Figure 8.5 The reactor character diagram for reactor with exothermic reactio...Figure 8.6 The energy consumption analysis diagram for consumptions evaluati...Figure 8.7 The combined multi‐parameter optimization diagram (CMOD).Figure 8.8 Variation of pinch position caused by the change of reactor tempe...Figure 8.9 The flowsheet of benzene to cyclohexene process.Figure 8.10 The CMOD for benzene to cyclohexene process.
9 Chapter 9Figure 9.1 Velocity related performances of heat exchanger.Figure 9.2 The relation between velocity and different cost elements.Figure 9.3 Fouling threshold curve.Figure 9.4 Pictorial representation of the heat exchanger fouling calculatio...Figure 9.5 Time discretization for modeling cleaning condition.Figure 9.6 Diagram of crude oil preheat train for Case Study 1.Figure 9.7 Fouling threshold curve and exchangers condition in base case (Ca...Figure 9.8 Initial velocity distribution in the base and optimized case.Figure 9.9 Initial and average heat duty of heat exchangers in base and opti...Figure 9.10 Fouling rates of E6 and E1A both in base and optimized cased.Figure 9.11 Comparison of FIT in the base and optimized cases.Figure 9.12 Diagram of crude oil preheat train for the Case Study 2.Figure 9.13 FIT profiles for selected scenarios over the whole time horizon....Figure 9.14 FIT profiles for selected scenarios over the whole time horizon:...
10 Chapter 10Figure 10.1 (a) GCC. (b) Comparison of different heat sources/sinks on a GCC...Figure 10.2 Flowchart of Strategy 1 for solving a large‐scale IPHI problem....Figure 10.3 (a) Extraction of waste heat source/sink. (b) Extraction of nimi...Figure 10.4 Complete flow diagram of NLQSA.Figure 10.5 Criteria to determine unassisted heat source/sink plant (UAPC) [...Figure 10.6 Flowchart for Strategy 2 considering connection pattern for solv...Figure 10.7 (a) Shifted composite curves. (b) ISCC [11]. (c) Interplant comp...Figure 10.8 Flowchart to determine the indirect IPHI with a parallel connect...Figure 10.9 Graphical illustration on IPCD for the determination of indirect...Figure 10.10 The final HEN configuration for IPHI scheme 1 involving Plants ...Figure 10.11 The final HEN configuration for IPHI scheme 2 involving Plants ...Figure 10.12 Determination of parallel connection pattern on IPCD for Exampl...
11 Chapter 11Figure 11.1 A mass exchanger and regeneration column.Figure 11.2 The stages involved in life cycle assessment..Figure 11.3 General proposed approach of the combined networks.Figure 11.4 A schematic of combined heat, mass, and regeneration networks in...Figure 11.5 A schematic representation of H2S removal process.Figure 11.6 The MEN configuration of H2S removal process (values above strea...Figure 11.7 The MEN and REN configuration (values above streams are composit...Figure 11.8 The CHAMEN configuration for H2S removal process (values above s...Figure 11.9 Variation of S3 absorption temperatures and the resulting TAC.Figure 11.10 Variation of S3 stripping temperatures and the resulting TAC.Figure 11.11 Variation of S2 absorption temperatures and the resulting TAC....Figure 11.12 Variation of S2 stripping temperatures and the resulting TAC.Figure 11.13 The optimized CHAMEN configuration (values above streams are co...Figure 11.14 Detailed TAC for CHAMENs with solar panels.Figure 11.15 Detailed TAC for CHAMENs without solar panels.Figure 11.16 Pareto optimal of the combined networks with NMP as S3 solvent....Figure 11.17 The combined networks with a moderate level of both TAC and EI ...Figure 11.18 Detailed TAC for CHAMENs with NMP.
12 Chapter 12Figure 12.1 Superstructure representation of water network with multiple mem...Figure 12.2 Schematic representations of a water source.Figure 12.3 Optimum water network configuration for Scenario 1.Figure 12.4 Optimum design configurations of the blackbox model.Figure 12.5 Optimum design configurations for detailed model.Figure 12.A.1 Schematic of a single stage ED plant.Figure 12.A.2 Schematic of a reverse osmosis unit.
13 Chapter 13Figure 13.1 Process integration and its classification.Figure 13.2 Process intensification classification.Figure 13.3 Process intensification