{"id":330,"date":"2024-06-19T14:21:41","date_gmt":"2024-06-19T12:21:41","guid":{"rendered":"https:\/\/handbook.kanco2.no\/?page_id=330"},"modified":"2024-08-15T13:51:28","modified_gmt":"2024-08-15T11:51:28","slug":"smart-integrations-of-co2-capture-plants-and-energy-recovery-plants","status":"publish","type":"page","link":"https:\/\/handbook.kanco2.no\/en\/smarte-integrasjoner-av-co2-fangstanleggog-energigjenvinningsanlegg\/","title":{"rendered":"Smart integrations of CO2 capture plants and energy recovery plants"},"content":{"rendered":"
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Chapter 3<\/p>\n\n\n

Smart integrations of CO2 capture plants and energy recovery plants<\/h2><\/div>\n\n\n\n
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Chapter 3<\/h2>\n\n\n\n
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Description of the energy system<\/a><\/div>\n\n\n\n
Smart integrations per technology<\/a><\/div>\n\n\n\n
Smart integrations<\/a><\/div>\n\n\n\n
Measures in existing waste incineration plants<\/a><\/div>\n\n\n\n
Heat supply to capture plants<\/a><\/div>\n\n\n\n
Recovery of waste heat from capture plants<\/a><\/div>\n\n\n\n
Cooling of unused waste heat<\/a><\/div>\n\n\n\n
Other measures for the use of waste heat<\/a><\/div>\n\n\n\n
Conclusion<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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This chapter highlights the integration between the \"KAN Referansa\" with steam production for steam turbines connected to a district heating network, and a new carbon capture plant, with power needs, heat requirements and cooling requirements. Heat supply to the capture plant, recovery of waste heat from the capture plant and cooling of unused waste heat have been considered. The chapter is based on the attached report \"L3 - Smart integrations for waste incineration plants with carbon capture\" by Norsk Energi.<\/p>\n\n\n\n

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1 Summary<\/h3>\n\n\n\n

For steam supply, it was concluded that it will be most energy efficient to either:<\/p>\n\n\n\n

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  1. Take steam upstream of the existing steam turbine through a new turbine adapted to the steam pressure required by the capture plant, or <\/li>\n<\/ol>\n\n\n\n

    2. Take as much steam as possible from the drains on the existing turbine and the rest upstream turbine.<\/p>\n\n\n\n

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    The latter will be more economically beneficial and require less investment. It may also be interesting from an energy point of view to explore the possibilities of passing 100% of the steam through the existing turbine and then pressing it up through a steam fan to reboiler pressure, especially if the pressure of the steam from the turbine is close to the reboiler pressure.<\/p>\n\n\n\n

    Waste heat from the capture plant can be recovered to the district heating network (DH network) or back to the capture plant. Recycling to the capture plant will not be profitable from an energy point of view and is only relevant if the waste incineration plant does not have available steam or hot water. Recycling to the DH network, to maintain the same DH delivery defined for \"KAN Referansa\", can be done with a COP of 6.5 to maintain the same DH delivery. With the waste heat available from the capture plant, DH delivery can be increased from 28.75 MW to 44.9 MW with a heat pump with COP of 3.5. There are many different heat pump technologies that should be considered further when installing, these depend on the details of each unique project.<\/p>\n\n\n\n

    Round-the-clock variations in DH demand can present operational challenges for heat pumps, to solve this it is possible to store waste heat in the DH grid or accumulator tank. If this is not possible, the heat pumps should periodically be installed as base load to ensure better operating conditions when diurnal variations do not allow continuous operation of the heat pumps.<\/p>\n\n\n\n

    Cooling unused waste heat will be a major challenge and location dependent, the best is if you find users of waste heat inside or outside your own plant. Geothermal heat or storage of sorbent is relevant to consider for seasonal storage of heat.<\/p>\n\n\n\n

    Cooling that cannot be stored can be taken by dry coolers on most days when temperatures allow. Sorptive cooling or absorption coolers can be used on the hottest days to achieve the right low temperature if required by the catch supplier. If the DH grid can be connected to seawater cooling to get lower return temperatures, it can contribute to cooling. Dry coolers on roofs will probably be necessary anyway, but with smart integrations you can reduce the power requirement somewhat. Dry coolers will be space-consuming and should be minimized.<\/p>\n\n\n\n

    2 Description of the energy system<\/h3>\n\n\n\n

    The capture plant \"KAN Referansa\" is an amine-based capture plant, with four heat exchangers heat can be obtained from, and one heat exchanger heat is supplied to.<\/p>\n\n\n\n

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    Figure 1: Block diagram of a typical amine-based carbon capture plant, on which the \"KAN Referansa\" is based. Gray lines are outside the capture provider's interface. Where relevant, reference is made to relevant chapters where the solutions are detailed.<\/figcaption><\/figure>\n\n\n\n
    2.1 Key figures for \"KAN Referansa\"<\/h5>\n\n\n\n