Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Heat Integration"”.
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Unified Total Site Heat Integration: Targeting, Optimisation and Network Design
… in New Zealand use 214.3 PJ of process heat, of which approximately 65 % is fossil fuels. Despite increasing energy demands, depleting fossil fuel resources, and pressure to reduce Greenhouse Gas emissions, low grade heat in large-scale processing sites is still not fully utilised. This …
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Open-Source tools for practical heat integration and utility system evaluation
… of the most effective strategies for reducing heat demand is optimising the design of heat exchanger networks (HENs). While automated synthesis methods like mathematical programming have long promised optimal designs, their industrial adoption remains limited. Key barriers include expensive …
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Multi-Level process integration of heat pumps in a non-continuous processing site
Industrial process heat demands contribute significantly to New Zealand’s greenhouse gas emissions. With a global push towards decarbonization, including New Zealand’s Climate Change Response Amendment Act 2019, there is a need for methods and technologies that can be applied to replace industrial …
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Kinetic Modelling Simulation and Optimal Operation of Trickle Bed Reactor for Hydrotreating of Crude Oil. Kinetic Parameters Estimation of Hydrotreating Reactions in Trickle Bed Reactor (TBR) via Pilot Plant Experiments; Optimal Design and Operation of an Industrial TBR with Heat Integration and Economic Evaluation.
… (HDT) processes, hot effluents can be used to heat other cold process streams. It is noticed that the energy consumption and recovery issues may be ignored for pilot plant experiments while these energies could not be ignored for large scale operations. Here, the heat integration of the HDT …
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Studies on process synthesis and process integration
… using heuristic shortcut methods and (2) process integration through heat-exchanger networks and energy-saving power and refrigeration systems. The shortcut methods for conceptual process synthesis presented in Chapter 2, utilize Residue Curve Maps in ternary diagrams and are illustrated with …
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STRATEGIES TO INCREASE PRODUCTION AND ENERGY EFFICIENCY OF A BASELOAD LNG PLANT
… of a conventional LNG plant with attention to heat integration of various streams from the cold section. The cold section consists of LNG liquefaction, natural gas liquid recovery, nitrogen removal unit (NRU), and export terminal. Two configurations for NRU are considered and the specific power …
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Aspen Plus® simulation and techno-economic analysis of condensation and fractional distillation of plastic waste pyrolysis oil for sustainable aviation fuel production
… viability, profitability was also improved by heat integration, electricity co-generation and increasing product quality through fractionation.
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Studies in process integration of energy and environmental systems
… attention over the past twenty years, process integration and optimization of energy and environmental systems. It emphasizes the applications of three commercial software tools for process integration, ADVENT, HEXTRAN and SlTPERTARGET, that are readily available to academic users at low costs. …
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CO₂ compression for capture-enabled power systems
… theoretically allowing for the possibility of heat integration with the rest of the plant, allowing waste heat to be recovered from hot interstage compressed carbon dioxide. This thesis first presents a technical context for carbon dioxide compression by providing an overview of capture …
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Comparison of Multieffect Distillation and Extractive Distillation Systems for Corn-Based Ethanol Plants
Recent publications on ethanol production and purification shows optimized energy and water consumptions as low as 22,000 Btu/gal ethanol and 1.54 gal water/gal ethanol respectively using multieffect distillation. Karuppiah, et al use column rating and mathematical optimization methods and shortcut …
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Solar Process Heat in the Food Industry – Methodological Analysis and Design of a Sustainable Process Heat Supply System in a Brewery and a Dairy
… reduce energy consumption and CO2 emissions with heat recovery, but also with the integration of solar process heat. Energy efficiency must provide the context, or background, of such considerations, and is therefore a very important aspect of them. It is a complex task to design an efficient heat …
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Advanced Process Design and Modeling Methods for Sustainable and Energy Efficient Processes
… drastic improvements possible with established heat integration and process intensification techniques. One technology we investigate is aromatics separation from petroleum feedstocks using new ionic liquid (IL) solvents. ILs are very popular in literature to replace conventional organic …
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LOW-EMISSIONS HYDROGEN FROM MCH DEHYDROGENATION: INTEGRATION WITH LNG REGASIFICATION
… hydrogen supply chain projects, when considering integrations with LNG regasification plants.
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Small-scale and flexible green ammonia production technology
… and Haber-Bosch process by targeting the integration of reaction and separation in a single process vessel at low pressures, thereby achieving the simplification and down-scaling of the high pressure recycle loop of the Haber-Bosch process. Materials are developed for this purpose, the …
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Techno-economic feasibility of a solar assisted coal power plant
The use of solar heat in conventional coal-fired power plants has been demonstrated to reduce the coal consumption of the plant. A reduction in the amount of coal that is burnt by the power plant, means that less greenhouse gases are emitted by the power plant. Hence, the plant has a smaller impact …
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Investigation of adsorbent-based warm carbon dioxide capture technology for IGCC system
… 180-240 °C temperature range, fast kinetics, low heat of adsorption, and stable working capacity for at least 84 cycles. The new sorbent performs better than synthetic hydrotalcite and K²CO³-promoted hydrotalcite in the temperature range of interest. To assess the applicability of CO₂ removal …
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Large-scale production of oxymethylene dimethyl ethers
… OME3-5 production processes is < 40 % even after heat integration. However, the overall energy efciency can be signifcantly improved if high temperature heat pumps (HTHP) are used to lift the temperature level of low temperature excess heat streams. The evaluation shows that by upgrading excess …
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Systematic synthesis of sloppy multicomponent separation sequences
… prior to the ultimate separator optimization and heat integration.
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Process Integration: Unifying Concepts, Industrial Applications and Software Implementation
… principles and practice, called process integration. The latter refers to the system-oriented, thermodynamically-based and integrated approaches to the analysis, synthesis and retrofit of process plants, focusing on integrating the use of materials and energy, and minimizing the …
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Resource intensity trends of ferrochrome production in South Africa
… over time due to improvements in process energy integration. The increased application of closed furnaces allows the use of flue gas from smelting for combustion to generate electricity and heat transfer of the hot gas to be used to heat up other process streams. The addition of a prereduction …