Detail publikace

Total Site Heat Integration of multi-effect evaporators with Vapour Recompression for older Kraft Mills

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

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

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.

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;

Autoři

Walmsley, T.G.; Atkins, M.J.; Ong, B.H.Y.; Klemeš, J.J.; Walmsley, M.R.W.; Varbanov, P.S.

Vydáno

1. 10. 2017

Nakladatel

Italian Association of Chemical Engineering - AIDIC

ISBN

978-88-95608-51-8

Kniha

Chemical Engineering Transactions

ISSN

2283-9216

Periodikum

Chemical Engineering Transactions

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"
}