Energy savings Suiker Unie

Marc van DijkCosun R&D

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Contents

• Introduction– Introduction Cosun– Introduction Suiker Unie

• Sugar production process• Project evaporation SU Dinteloord• Project thermocompression SU Dinteloord• Renewable energy: Green Gas production

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Introduction Cosun

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Introduction Cosun

Sugar products Potato products Inulin products Fruit & vege-

table products

Animal feed & starch

- Turnover € 2 billion - ~ 40 locations

- ~ 3900 FTE

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Ambition Cosun: ‘being the best’ (the best the biggest)

Maximising the value out of raw materials

Profitable growth in sugar ánd other activities

Innovation

/biobased

International

Decrease

volatility

‘License to operate’ and sustainable cultivation

Cooperation and optimization

within the chain

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Introduction Suiker Unie– Producer of sugar, molasses, pulp, betacal,

green gas– ~650 FTE in NL– 3 sugar factories (Dinteloord/Vierverlaten/

Anklam (DE))– 2 sugar specialty factories (Roosendaal /

Puttershoek)– 1 Bio-ethanol factory (Anklam (DE)

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What is happening in European sugar sector?

Regulated EU market until sept. 2017:• Quota sugar:

– Beet sugar 13 m t– Imports 3.5 m t

• Out-of-Quota sugar:– Export outside EU,

Chemical industry, Bio-Ethanol Total 4.1 m t

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What is happening in European sugar sector?

After sept. 2017:• Abolishment of production quota (sugar + isoglucose) • No minimum price sugar beets• No import levy from ACP/EBA countries • Other import levies will remain• Unlimited exportExpected Impact: • Increase production (efficient producers) • Increased competition• More volatility in market and prices • More export / less import• Increase isoglucose production

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Sugar production process

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Project Evaporation SUD

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Project Evaporation SU Dinteloord (SUD)

Main goals: • Energy reduction

• Make capacity increase possible:– Increase of factory capacity

without investment in boiler capacity

– Increase of the heating surface of the first effect to stay within the limits of the exhaust steam temperature and pressure.

Energy consumption

-14%

Beet processing

+20%

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Project Evaporation SUD

Multiple effect evaporation• Norbert Rillieux: inventor multiple effect

evaporation, and application in sugar industry (1843)

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Project Evaporation SUD

Multiple effect evaporation

Source: GEA

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Project Evaporation SUD

2014: 6-stage evaporation

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Project Evaporation SUD

2016: 7-stage evaporation

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Project Evaporation SUD

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Project Evaporation SUD

Plate falling film

evaporator

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Falling film plate evaporator:☺ Good heat transfer☺ Compact☺ Multiple package in 1

evaporator possible� Flushing system

required

Project Evaporation SUD

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Project Evaporation SUD

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Phase I

Phase II

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Simulations factory model indispensable to calculate different scenario’s during pre-engineering and engineering

Project Evaporation SUD

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Project Evaporation SUD

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Results:• 10.000.000 Nm3 natural gas saving per year• 16.000 t CO2 emissions reduction• Price winning project EZ energy awards 2016

Project Evaporation SUD

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Recompression by use of High Pressure Steam

– Relatively cheap investment– At the cost of lower electricity production– Additional 4-5% final energy consumption

2017: thermocompression

Source: GEA

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Energy consumption sugar

> 50% reduction specific energy consumption on sugar from 1990

Strong efforts to decrease energy consumption further. Is 50% further decrease possible?

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Renewable energy: Green gas production

• in total ~ 30 million Nm3 green gas production of beet parts, leaves, pressed pulp and other organic material; digester at each sugar factory

• 2017: Expansion with 8.2 million Nm3 at SU Vierverlaten• Sustainable & strategic route in combination with biorefining

of beet pulp