Total Site Heat Integration of multi-effect evaporators with Vapour Recompression for older Kraft Mills
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU127420" target="_blank" >RIV/00216305:26210/17:PU127420 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.3303/CET1761042" target="_blank" >http://dx.doi.org/10.3303/CET1761042</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3303/CET1761042" target="_blank" >10.3303/CET1761042</a>
Alternative languages
Result language
angličtina
Original language name
Total Site Heat Integration of multi-effect evaporators with Vapour Recompression for older Kraft Mills
Original language description
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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Sustainable Process Integration Laboratory (SPIL)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Chemical Engineering Transactions
ISBN
978-88-95608-51-8
ISSN
2283-9216
e-ISSN
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Number of pages
6
Pages from-to
265-270
Publisher name
Italian Association of Chemical Engineering - AIDIC
Place of publication
Neuveden
Event location
Tianjin
Event date
Aug 21, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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