US 2025/0018329 A1Published application

Method for capturing carbon dioxide and gas absorption system

AssigneeXeca Turbo Technologies (Beijing) Co., Ltd.

InventorsXijia LV, Tu ZHAO, Shuxian ZHUANG, Yakui BAI, Yifan LIU, Shen CHEN, Di FU, Hao ZHANG, Junwei ZHANG

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Abstract

A method for capturing carbon dioxide includes: spraying an alkaline solution through a first spray structure; temporarily storing a solution, in a first temporary storage structure, and making the solution flow out through the first spray structure; detecting a concentration of hydroxide and/or a concentration of carbonate of the solution, and supplementing one of an alkaline solution and water into the first temporary storage structure according to the concentration of the hydroxide and/or the concentration of the carbonate; and in a case that the concentration of the hydroxide is less than or equal to m and the concentration of the carbonate is n, controlling a first pump body or a third pump body to stop running, so that the solution enters an electrolysis device for an electrolysis. Adopting the present disclosure solves problems in that capture efficiency of carbon dioxide gas and overall energy consumption are relatively difficult to control.

Claims20

Dependent claims

A method for capturing carbon dioxide, comprising:

spraying an alkaline solution through a first spray structure, so that the alkaline solution flowing out through the first spray structure chemically reacts with carbon dioxide gas in gas to absorb the carbon dioxide gas;
temporarily storing a solution, obtained after the alkaline solution chemically reacts with the carbon dioxide gas, in a first temporary storage structure, and making the solution stored temporarily in the first temporary storage structure flow out through the first spray structure;
detecting at least one of a concentration of hydroxide and a concentration of carbonate of the solution in the first temporary storage structure in real time, and supplementing one of an alkaline solution and water into the first temporary storage structure according to the at least one of the concentration of the hydroxide and the concentration of the carbonate;
and
during a process of detecting the at least one of the concentration of the hydroxide and the concentration of the carbonate of the solution in the first temporary storage structure in real time, in a case that the concentration of the hydroxide is detected to be less than or equal to m and the concentration of the carbonate is detected to be n, controlling a first pump body or a third pump body to stop running, so that the solution stored temporarily in the first temporary storage structure enters an electrolysis device for an electrolysis.

2 more elements

A gas absorption system, comprising:

a housing provided with an intake port and an exhaust port, the intake port being in communication with the exhaust port, wherein the exhaust port is located above the intake port;
or in a horizontal direction, the intake port and the exhaust port are disposed opposite to each other;
a gas pretreatment device disposed inside the housing and located at the intake port for filtering impurities in gas entering the intake port;
and
a gas absorption assembly disposed inside the housing and located downstream of the gas pretreatment device, the gas absorption assembly comprising a first liquid supply device and a first spray structure, the first liquid supply device being in communication with the first spray structure to provide an alkaline solution, and the alkaline solution flowing out through the first spray structure chemically reacting with carbon dioxide gas in the gas to absorb the carbon dioxide gas.

2 more elements

Dependencies are inferred from the claim text.