de - Beste verfügbare Techniken (BVT) - Umweltbundesamt

de - Beste verfügbare Techniken (BVT) - Umweltbundesamt de - Beste verfügbare Techniken (BVT) - Umweltbundesamt

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Chapter 2 2.2 Multipurpose plants Multipurpose plants enable the operator to manufacture different products with a certain flexibility according to market requirements. Figure 2.2 gives an impression of the arrangement in a typical plant, which uses gravity flow for efficient material transport. The main components in the multipurpose plant are: • raw material storage (warehouse, tank farm) • reactors and vessels • finished and intermediate storage • utilities (e.g. cooling, vacuum, steam, cleaning) • process control systems • feed tanks (usually upper floors) • purification and separation equipment • recovery and abatement facilities • blow-off systems and catch tanks. Production campaigns with batch wise, semi-batch or continuous operation of reactors and facilities for product work-up alternate with shutdown, cleaning and start-up situations. Figure 2.2: Typical layout for a multipurpose plant The example schedule given in Figure 2.3 shows the utilisation of 17 vessels in a production building on a multipurpose plant with 22 different products/intermediates (shown as different colours). This picture could vary drastically over the year due to a possibly changed market situation. The use of the capacity varies from 60 to 95 %. Lower values would be critical from an economic point of view. Higher values would represent a real challenge from an operational point of view. 22 Dezember 2005 OFC_BREF

Vessel September 2003 1 2 3 4 5 6 7 8 9 10 Chapter 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 11 Out of service 12 13 14 15 16 17 Figure 2.3: Example for the utilisation of the vessels in a production building OFC_BREF Dezember 2005 23

Vessel September 2003<br />

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Chapter 2<br />

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30<br />

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Figure 2.3: Example for the utilisation of the vessels in a production building<br />

OFC_BREF Dezember 2005 23

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