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Detail publikačního výsledku
Walmsley, T.G.; Atkins, M.J.; Ong, B.H.Y.; Klemeš, J.J.; Walmsley, M.R.W.; Varbanov, P.S.
Originální název
Total Site Heat Integration of multi-effect evaporators with Vapour Recompression for older Kraft Mills
Anglický název
Druh
Stať ve sborníku v databázi WoS či Scopus
Originální abstrakt
This paper aims to apply Total Site Heat Integration (TSHI) to appropriately integrate Mechanical and Thermal Vapour Recompression with multi-effect evaporators at older Kraft Mills, to cause a step reduction in fossil fuel use and its associated emissions. Heat and power demands for older Kraft Mills are chiefly satisfied from Recovery Boilers (RB), heavily supplemented by biomass/fossil fuel boilers, and integrated with steam turbines. Prior to firing, black liquor - the RB fuel - is concentrated from about 18 % to 67 % in a multi-effect evaporator, which demands 20 % of site-wide thermal energy. With access to renewable electricity, this study finds that vapour recompression can be economically integrated into a multi-effect evaporator at older Kraft Mills. The vapour recompression configuration with the greatest economic potential used 2-stages of mechanical vapour recompression and 1-stage of thermal vapour recompression. This system achieved a levelised profit of NZD 8.56 M/y, a payback period of 1.0 y and an internal rate of return of 103 %. An optimum integrated set-up needs to account for site-specific heat demand and utility supply profiles through TSHI.
Anglický abstrakt
Klíčová slova
Earnings; Evaporators; Fossil fuels; Fuels; Investments; Specific heat; Steam turbines; Economic potentials; Heat integration; Internal rate of return; Multi-effect evaporators; Payback periods; Recovery boilers; Renewable electricity; Vapour recompression; Boilers; Kraft Mills;
Klíčová slova v angličtině
Autoři
Rok RIV
2018
Vydáno
01.10.2017
Nakladatel
Italian Association of Chemical Engineering - AIDIC
ISBN
978-88-95608-51-8
Kniha
Chemical Engineering Transactions
ISSN
2283-9216
Periodikum
Číslo
61
Stát
Italská republika
Strany od
265
Strany do
270
Strany počet
6
BibTex
@inproceedings{BUT146488, author="Walmsley, T.G. and Atkins, M.J. and Ong, B.H.Y. and Klemeš, J.J. and Walmsley, M.R.W. and Varbanov, P.S.", title="Total Site Heat Integration of multi-effect evaporators with Vapour Recompression for older Kraft Mills", booktitle="Chemical Engineering Transactions", year="2017", journal="Chemical Engineering Transactions", number="61", pages="265--270", publisher="Italian Association of Chemical Engineering - AIDIC", doi="10.3303/CET1761042", isbn="978-88-95608-51-8", issn="2283-9216" }