UNDERGROUND STORAGE METHOD OF LIQUID CARBON DIOXIDE

摘要

PURPOSE: A method of storing carbon dioxide liquid under the ground is provided to enable carbon dioxide liquid in a storage tank to move only to air and be transferred to an underground storage, minimizing heat loss due to external environment. CONSTITUTION: A method of storing carbon dioxide liquid under the ground is as follows. A connecting line(30) transfers the carbon dioxide liquid through a platform(40) in the air and is injected into an underground storage by a pressure pump(51). The connecting line connects a storage tank(10) to the underground storage(20). Carbon dioxide is stored in the storage tank at a temperature of 25~-60°C. The carbon dioxide liquid is heated by a heater installed on the platform of the connecting line and is stored in the underground storage. Some of the carbon dioxide liquid is temporarily stored in a process of being transferred from the storage tank to the underground storage by a temporary storage tank installed on the connecting line.