Plant and method for producing carbon dioxide

A plant for providing carbon dioxide (CO2) comprising:

• a separation system, the separation system being in flow connection with a gas mixture composed of flue gas and carbon dioxide (CO2), the separation system being designed such that the carbon dioxide (CO2) in the flue gas is separated,
• wherein during operation the separation system is operable with steam from a steam line;
• a first carbon dioxide line which is in flow connection with the separation system and from which the carbon dioxide (CO2) separated in the separation system flows during operation;
• a preheater through which the carbon dioxide line passes and is designed such that a temperature of the carbon dioxide (CO2) is increased;
• and
• a multistage compressor which, on an inlet side, is in flow connection with the carbon dioxide line coming out of the preheater,
• wherein after one stage the temperature and a pressure of the carbon dioxide (CO2) is increased,
• wherein after the stage the carbon dioxide (CO2) passes via a line (14) through a steam generator,
• wherein the steam generator is designed such that steam is generated a water delivered into the steam generator by means of energy exchange with a thermal energy of the carbon dioxide (CO2) coming out of the compressor after one stage,
• wherein the carbon dioxide cooled in the steam generator is recirculated into the compressor toward a next stage,
• wherein the steam generated in the steam generator is in flow connection with the separation system via the steam line, and
• wherein the carbon dioxide (CO2) flowing out of the compressor after the last stage flows through the preheater and is heated and flows into an outlet line.