Carbon dioxide capture and carbon capture and utilization system for ship, and method therefor

A carbon dioxide capture and carbon capture and utilization system for a ship, the system comprising:

• a first reactor configured to receive an exhaust gas discharged from the ship, to capture carbon dioxide in the exhaust gas by reacting the exhaust gas with a basic alkaline mixture solution, to collect a reactant containing the captured carbon dioxide, to separate a carbon dioxide reactant and a waste solution from the reactant, to collect and store the carbon dioxide reactant, and to discharge a residual exhaust gas in which the captured carbon dioxide is removed;
• and
• a second reactor connected to the first reactor, the second reactor being provided with a carbon dioxide reactant injection port into which the carbon dioxide reactant is injected and at least two seawater injection ports symmetrically arranged with respect to a direction in which the carbon dioxide reactant is injected,
• wherein the second reactor is a horizontal type reactor, and a turbulent flow zone and a laminar flow zone that are formed by seawater introduced with respect to the direction in which the carbon dioxide reactant is injected are sequentially formed in the second reactor.