Process and utility systems integration and optimisation for ultra-low energy milk powder production
| Autor: | Martin John Atkins, Matthias Philipp, Michael R.W. Walmsley, Timothy Gordon Walmsley, Ron-Hendrik Peesel |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Chiller
Trockenmilch Engineering 020209 energy Prozessmodell 02 engineering and technology Energieeffizienz Industrial and Manufacturing Engineering 020401 chemical engineering Economizer Process integration 0202 electrical engineering electronic engineering information engineering milk powder process integration 0204 chemical engineering Electrical and Electronic Engineering total site Reverse osmosis Produktionsorganisation Civil and Structural Engineering Waste management business.industry Mechanical Engineering Boiler (power generation) Building and Construction Pollution General Energy Prozessmanagement Spray drying Wärme Electricity business process modelling Thermal energy |
| DOI: | 10.17170/kobra-202103093470 |
| Popis: | 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/t p of fuel and 210.5 kWh/t p (58.5 MJ e /t p ) 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. |
| Databáze: | OpenAIRE |
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