Detail publikačního výsledku

Process and utility systems integration and optimisation for ultra-low energy milk powder production

Walmsley, T.G.; Atkins, M.J.; Walmsley, M.R.; Philipp, M.; Peesel, R.H.

Originální název

Process and utility systems integration and optimisation for ultra-low energy milk powder production

Anglický název

Process and utility systems integration and optimisation for ultra-low energy milk powder production

Druh

Článek WoS

Originální abstrakt

This study applies a Total Site Heat Integration approach in conjunction with a detailed process and utility model, to develop an innovative ultra-low energy milk powder plant design. The basis for the analysis is a state-of-the-art modern milk powder plant that requires 5265 MJ/tp of fuel and 210.5 kWh/tp (58.5 MJe/tp) of electricity. The model of the modern milk powder plant was validated against industrial data and changes to process and/or utility systems are targeted and implemented into the model to understand the impacts on thermal and electrical demands and emissions. Results show that seven significant changes are beneficial: (1) pre-concentration of milk to 30% using reverse osmosis, (2) a two-stage intermediate concentrate (30%) homogenisation to enable high solids (60%) spray drying, (3) an ultra-low energy Mechanical Vapour Recompression evaporator system, (4) spray dryer exhaust heat recovery, (5) condensing economiser for the boiler, (6) upgrade and integration of chiller condenser heat with hot water utility systems, and (7) recycling of air in the building ventilation system. These changes are estimated to reduce thermal energy use by 51.5%, electricity use by 19.0%, and emissions by 48.6% compared to a modern milk powder plant.

Anglický abstrakt

This study applies a Total Site Heat Integration approach in conjunction with a detailed process and utility model, to develop an innovative ultra-low energy milk powder plant design. The basis for the analysis is a state-of-the-art modern milk powder plant that requires 5265 MJ/tp of fuel and 210.5 kWh/tp (58.5 MJe/tp) of electricity. The model of the modern milk powder plant was validated against industrial data and changes to process and/or utility systems are targeted and implemented into the model to understand the impacts on thermal and electrical demands and emissions. Results show that seven significant changes are beneficial: (1) pre-concentration of milk to 30% using reverse osmosis, (2) a two-stage intermediate concentrate (30%) homogenisation to enable high solids (60%) spray drying, (3) an ultra-low energy Mechanical Vapour Recompression evaporator system, (4) spray dryer exhaust heat recovery, (5) condensing economiser for the boiler, (6) upgrade and integration of chiller condenser heat with hot water utility systems, and (7) recycling of air in the building ventilation system. These changes are estimated to reduce thermal energy use by 51.5%, electricity use by 19.0%, and emissions by 48.6% compared to a modern milk powder plant.

Klíčová slova

Energy utilization; Industrial emissions; Ventilation; Ventilation exhausts; Waste heat; Water recycling; Building ventilations; Electrical demand; Evaporator systems; Exhaust heat recovery; Pre-concentration; State of the art; Thermal energy use; Vapour recompression; Integration;

Klíčová slova v angličtině

Energy utilization; Industrial emissions; Ventilation; Ventilation exhausts; Waste heat; Water recycling; Building ventilations; Electrical demand; Evaporator systems; Exhaust heat recovery; Pre-concentration; State of the art; Thermal energy use; Vapour recompression; Integration;

Autoři

Walmsley, T.G.; Atkins, M.J.; Walmsley, M.R.; Philipp, M.; Peesel, R.H.

Rok RIV

2019

Vydáno

01.03.2018

ISSN

0360-5442

Periodikum

Energy

Číslo

146

Stát

Spojené království Velké Británie a Severního Irska

Strany od

67

Strany do

81

Strany počet

15

BibTex

@article{BUT145943,
  author="Walmsley, T.G. and Atkins, M.J. and Walmsley, M.R. and Philipp, M. and Peesel, R.H.",
  title="Process and utility systems integration and optimisation for ultra-low energy milk powder production",
  journal="Energy",
  year="2018",
  number="146",
  pages="67--81",
  doi="10.1016/j.energy.2017.04.142",
  issn="0360-5442"
}