Carbon dioxide pump is a specialized pump used for compressing, transporting gaseous, liquid or supercritical carbon dioxide. It is not only the "cooling heart" of refrigeration and air conditioning, but also the "green artery" of carbon capture systems, and the "energy engine" of supercritical power generation. Today, with the flourishing development of carbon neutrality and environmental protection technologies, this type of pump is integrating into every corner of human industrial civilization with unique value.
1、 The unique mission of carbon dioxide pump
Unlike ordinary water pumps, carbon dioxide pumps need to deal with the multiphase challenge of CO?:
1. Gaseous CO?: Exists at atmospheric pressure and needs to be compressed to liquid state for transportation (such as carbon capture and storage).
2. Liquid CO?: High pressure and low temperature state (-20 ℃, 2MPa), used for refrigeration and food processing.
3. Supercritical CO? (sCO?): High temperature and high pressure state (>31.1 ℃, 7.38MPa), thermal cycle efficiency multiplier.
2、 Core functions
1. Phase control: Accurately maintain the CO? Phase state to avoid cavitation or liquid hammer caused by gas-liquid two-phase flow.
2. High pressure sealing: prevents greenhouse gas leakage (the greenhouse effect of CO? Escape is 25 times that of CO?).
3. Efficient transmission: spanning temperature ranges from -50 ℃ to 700 ℃, suitable for carbon neutrality in multiple scenarios.
3、 Typical process (taking carbon capture as an example)
1. Compression: Compressing CO? In power plant flue gas from 0.1MPa to supercritical state (7.4MPa).
2. Purification: Remove moisture and sulfides (purity>99.9%).
3. Transportation: pumping to underground storage or industrial reuse (such as oil displacement, methanol production).