Small-scale LCO₂ liquefaction plants, with capacities ranging from 5 to 100 tons per day (TPD), play a key role in the processing of biogenic CO₂. When designing these plants, the choice between modular and centralized systems is crucial for both technical performance and economic feasibility.
Modular liquefaction plants are often located directly at the source, such as at farms or waste treatment facilities. This reduces the need for gas transport and enables efficient, decentralized processing. Additionally, modular systems offer flexibility and scalability as CO₂ production grows.
Centralized plants, on the other hand, benefit from economies of scale, which can lower the cost per ton of CO₂. However, transportation poses a significant challenge here. Transporting CO₂ in gaseous form is inefficient over longer distances, while liquid CO₂ imposes additional requirements on storage and logistics.
The optimal choice depends on factors such as source locations, transport distances, and integration possibilities. By carefully balancing flexibility and economies of scale, an efficient and future-proof liquefaction solution can be achieved.
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