Process Design, Integration and Optimisation: Advantages, Challenges and Drivers

Lavric, Vasile

doi:10.1533/9780857097255.1.79

Cited by 3 publications

(4 citation statements)

References 174 publications

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“…In such cases, a retrofit of an existing HEN can be considered to eliminate or minimise the increase in energy consumption from the change in production rate. The retrofit design, defined as "modification to an existing plant to improve its performance", could be evaluated in the terms of the reduction in energy consumption, utility costs, or other variables [7]. These endeavours in HEN retrofits can typically achieve a reduction in hot and cold utilities by up to 40% compared with original designs or existing installations [7].…”

Section: Introductionmentioning

confidence: 99%

“…The retrofit design, defined as "modification to an existing plant to improve its performance", could be evaluated in the terms of the reduction in energy consumption, utility costs, or other variables [7]. These endeavours in HEN retrofits can typically achieve a reduction in hot and cold utilities by up to 40% compared with original designs or existing installations [7]. Other motives behind a retrofit project include the permanent change in feed/product specifications, increase in demand which is significant enough to increase production rate (but insufficient to construct a new plant), improving safety, and reducing waste emissions [7].…”

Section: Introductionmentioning

confidence: 99%

“…These endeavours in HEN retrofits can typically achieve a reduction in hot and cold utilities by up to 40% compared with original designs or existing installations [7]. Other motives behind a retrofit project include the permanent change in feed/product specifications, increase in demand which is significant enough to increase production rate (but insufficient to construct a new plant), improving safety, and reducing waste emissions [7]. Much work has been done in the olefin industry, as listed in Table 1 below.…”

Section: Introductionmentioning

confidence: 99%

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Heat Exchanger Network Retrofit of an Oleochemical Plant through a Cost and Energy Efficiency Approach

Trisha

Koh

et al. 2021

ChemEngineering

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Limited research of heat integration has been conducted in the oleochemical field. This paper attempts to evaluate the performance of an existing heat exchanger network (HEN) of an oleochemical plant at 600 tonnes per day (TPD) in Malaysia, in which the emphases are placed on the annual saving and reduction in energy consumption. Using commercial HEN numerical software, ASPEN Energy Analyzer v10.0, it was found that the performance of the current HEN in place is excellent, saving over 80% in annual costs and reducing energy consumption by 1,882,711 gigajoule per year (GJ/year). Further analysis of the performance of the HEN was performed to identify the potential optimisation of untapped heating/cooling process streams. Two cases, which are the most cost-effective and energy efficient, were proposed with positive results. However, the second case performed better than the first case, at a lower payback time (0.83 year) and higher annual savings (0.20 million USD/year) with the addition of one heat exchanger at a capital cost of USD 134,620. The first case had a higher payback time (4.64 years), a lower annual saving (0.05 million USD/year) and three additional heaters at a capital cost of USD 193,480. This research has provided a new insight into the oleochemical industry in which retrofitting the HEN can further reduce energy consumption, which in return will reduce the overall production cost of oleochemical commodities. This is particularly crucial in making the product more competitive in its pricing in the global market.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heat Exchanger Network Retrofit of an Oleochemical Plant through a Cost and Energy Efficiency Approach

Trisha

Koh

et al. 2021

ChemEngineering

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“…By now a lot of professional process simulators (Aspen HYSYS [1], Aspen Plus [2], ChemCAD [3], gPROMS [7], SimSci PRO/II [14], UniSim Design Suite [19]) and optimization methods [e.g. 8,[10][11][12][13]15,18,20] have been already developed. In this study we introduce a new method, automatic calculations [5], for the quick analysis of a complex system.…”

Section: Introductionmentioning

confidence: 99%