Carbon dioxide capture system and method, and use

By combining a cyclone separator, a concrete absorption tower, and a supergravity desorption device with microwave technology, a carbon dioxide capture system has been developed that solves the problems of high cost and high energy consumption in traditional technologies, and achieves large-scale carbon dioxide capture with low cost and low energy consumption.

WO2025256083A1PCT designated stage Publication Date: 2025-12-18PETROCHINA CO LTD
View PDF 7 Cites 1 Cited by

Patent Information

Application Number
PCT/CN2024/138466
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-11
Filing Date
2024-12-11
Publication Date
2025-12-18

AI Technical Summary

Technical Problem

Existing carbon dioxide capture technologies suffer from high capture costs and difficulties in large-scale engineering scaling. In particular, traditional absorption towers are expensive to maintain and repair, have low mass transfer efficiency, and consume a lot of energy.

Method used

The pretreatment unit uses a cyclone separator to remove dust, the absorption unit uses a concrete absorption tower to contact the carbon dioxide absorbent, the desorption unit uses a supergravity desorption device combined with microwave technology, and the heat exchange unit collects heat to achieve comprehensive utilization of heat.

Benefits of technology

It significantly reduces carbon dioxide capture costs, lowers desorption energy consumption by more than 15-20%, improves mass transfer efficiency, extends the service life of the absorption tower, reduces maintenance frequency, and achieves large-scale carbon capture with low cost and low energy consumption.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN2024138466_18122025_PF_FP_ABST
    Figure CN2024138466_18122025_PF_FP_ABST
Patent Text Reader

Abstract

The present invention relates to the technical field of carbon dioxide capture. Disclosed are a carbon dioxide capture system and method, and the use. The carbon dioxide capture system comprises a pretreatment unit, an absorption unit and a heat exchange unit, wherein the pretreatment unit is configured to remove dust from flue gas containing carbon dioxide, and comprises a cyclone separator, the cyclone separator being provided with a liquid-phase feeding member for distributing a washing liquid in a mist form and a cyclone structure for making the flue gas form a cyclone to come into contact with the washing liquid; the absorption unit is in communication with a gas-phase outlet of the pretreatment unit, and is configured to bring a carbon dioxide absorbent into contact with the flue gas to form a rich solution; a desorption unit is connected to a rich solution outlet of the absorption unit, and is configured to desorb carbon dioxide from the rich solution under hypergravity and obtain a lean solution; and the heat exchange unit is configured to collect heat from materials discharged from the desorption unit. The present invention has the advantages of a low cost and a low energy consumption.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Method and apparatus for collecting carbonic anhydride in coal-fired plant flue gas

    CN101314102A

  • Flue gas pretreatment and carbon dioxide collecting, purifying and recycling device

    CN103657381A

  • System and method for purifying carbon dioxide

    CN110813017A

  • CO2 capture method and apparatus

    CN112387071A

  • System and method for capturing carbon dioxide in blast furnace gas based on two-phase absorbent

    CN116850751A

Cited By

  • Composite amine liquid flue gas carbon capture multi-stage collaborative optimization method and system

    CN122273287A