Method for compressing carbon dioxide or a gas which has similar properties
View Patent ↗A method is provided where carbon dioxide is compressed in a multi-stage geared compressor using a substantially isothermic process to a pressure which lies above the pressure of the critical point of carbon dioxide. The carbon dioxide is subsequently cooled to ambient temperature in a cooling device and then compressed to a predefined final pressure in a pump device.
1. A method for compressing carbon dioxide, comprising:
compressing an initially gaseous carbon dioxide in a compressor using an essentially isothermal process to a first pressure which lies above a second pressure of the critical point of carbon dioxide;
cooling the carbon dioxide in a cooling device to a first temperature below a second temperature of the critical point, in order to achieve a first density which is close to a second density of a typical liquid; and
compressing the carbon dioxide in a pumping device to a predetermined discharge pressure.
2. The method for compressing carbon dioxide as claimed in claim 1 , wherein in order to achieve the discharge pressure, both a turbocompressor and a pumping device are used.