Maximum heat recovery and its consequences for process system design

Author(s):  
Stanisław Sieniutycz ◽  
Jacek Jeżowski
2012 ◽  
Author(s):  
Sharifah Rafidah Wan Alwi ◽  
Muhammad Azan Tamar Jaya ◽  
Zainuddin Abdul Manan

Kilang penapisan minyak sawit lazimnya melibatkan proses penggunaan tenaga yang tinggi. Peningkatan kecekapan tenaga adalah amat penting bagi memastikan keuntungan tercapai. Kertas kerja ini menggunakan teknik analisis jepit bagi memaksimumkan penggunaan semula haba dan meningkatkan kecekapan sistem rangkaian haba sedia ada di kilang penghasilan minyak sawit, tertakluk kepada kekangan–kekangan proses. Langkah–langkah yang terlibat ialah penetapan sasaran guna semula haba maksimum diikuti dengan reka bentuk rangkaian haba yang ekonomik. Aplikasi teknik berkenaan kepada kilang penghasilan minyak sawit telah menghasilkan pengurangan penggunaan haba panas dan sejuk sebanyak 700 kW (21%), atau penjimatan kos utiliti sebanyak RM370,787, dengan pelaburan kapital sebanyak RM656,293 dan jangka pulangan balik selama 1.77 tahun. Kata kunci: Analisis jepit; minyak kelapa sawit; sedia ada; rangkaian pemindahan haba; kitar semula haba maksimum A palm oil refinery involves energy–intensive processes. Maximizing thermal efficiency of palm oil refinery is crucial for the plant profitability. This work implements a pinch analysis retrofit technique to maximize heat recovery and thermal efficiency of a palm oil refinery, subject to the existing process constraints. The procedures involve setting the maximum heat recovery targets and cost–effective retrofit of the heat exchanger network (HEN). Application of the technique on a palm oil refinery results in reduction of 700 kW (21%) heating and cooling loads or a saving of RM370,787, incurring a capital investment of about RM656,293 and a payback period of 1.77 years. Key words: Pinch analysis; palm oil; retrofit; heat exchanger network; maximum heat recovery


1992 ◽  
Vol 47 (6) ◽  
pp. 1481-1494 ◽  
Author(s):  
Jacek Jez̆owski ◽  
Ferenc Friedler

2014 ◽  
Vol 87 ◽  
pp. 1098-1106 ◽  
Author(s):  
Sharifah Rafidah Wan Alwi ◽  
Carmen Kar Mun Lee ◽  
Kim Yau Lee ◽  
Zainuddin Abd Manan ◽  
Duncan M. Fraser

Author(s):  
Kenneth O. Smith

The initial developmental testing of a Heat Recovery Module (HRM) for cogeneration applications is described. The HRM is a prepackaged, pretested, skid-mounted system sized for the 500 to 1000 kW class of industrial gas turbine. Key features of the module include: • a highly compact, once-through boiler fabricated using finned Incoloy 800 tubing • a gas-fired supplementary burner capable of 1256 K (1800°F) refiring for greater system operating flexibility • a “spill-over” mode of boiler operation that allows feedwater softening rather than deionization • a fully integrated microprocessor-based control system System design and performance data are presented.


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