CN114405215A

CN114405215A - Carbon dioxide capture method

Info

Publication number: CN114405215A
Application number: CN202111614606.0A
Authority: CN
Inventors: 汪雨欣; 汪钟睿
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-04-29

Abstract

The invention relates to a carbon dioxide capturing method, which is characterized in that at places where carbon dioxide is easy to gather, such as valleys, forests, depressions or underground caves, which are close to a carbon dioxide sealing place or an application place of the carbon dioxide, a movable air extraction device or an air extraction system which is formed by a fixed air extraction device and a flower pipe is adopted, carbon dioxide gas is sucked at a place close to the ground before dawn to early morning, so that the carbon dioxide gas is captured at different places and dispersedly, the technical and economic problems existing in capturing carbon dioxide from a flue of a kiln are solved, the capturing regional scope of the carbon dioxide is expanded, more enterprises are attracted to invest in capturing activities of the carbon dioxide, and technical support is provided for realizing the clean zero emission of the carbon dioxide.

Description

Carbon dioxide capture method

Technical Field

The invention relates to an air pollution prevention technology, in particular to a carbon dioxide capturing method.

Technical Field

The capture, utilization and sequestration of carbon dioxide (CCUS) is the most promising technical route for reducing the carbon dioxide content in the atmosphere. The capture of carbon dioxide is the first link of the technical route. The prior art mainly captures carbon dioxide from a flue of a kiln. This trapping method has many problems: (1) the temperature of the trapping object is high, the temperature reduction treatment is needed, the process is complex, not only are more devices needed, but also the requirements on related devices are high; (2) the capture of carbon dioxide often interferes with the dust removal, sulfur removal, nitrogen removal and the like of flue gas; (3) the distance from the carbon dioxide capture place to the sequestration place or the application enterprise is long, so that the transportation cost for conveying the captured carbon dioxide to the sequestration place or the application place is high, and the risk of leakage in the transportation process is high; (4) the energy consumed in the carbon dioxide capturing and transporting process is more, so that the discharged carbon dioxide is correspondingly more; (5) the excessive concentration of the capture points is not beneficial to other environment-friendly enterprises to participate in the capture of the carbon dioxide, so that the functions of other environment-friendly enterprises are not favorably exerted, and the employment is not favorably realized; (6) the trapping points are concentrated, and once the trapping equipment fails or needs to be overhauled, the carbon dioxide trapping can be interrupted; and so on.

Disclosure of Invention

The invention aims to provide a method for capturing carbon dioxide, which fully utilizes natural laws and the force of nature to realize the purpose of capturing carbon dioxide in different places and dispersedly, reduces the difficulty of capturing the carbon dioxide, simplifies the capturing process, reduces equipment required by capturing the carbon dioxide, greatly shortens the transportation distance of the carbon dioxide from a capturing place to a sealed place or an application place of the carbon dioxide, obviously reduces the transportation cost, reduces the energy consumption in the capturing and transporting processes of the carbon dioxide and the carbon dioxide emission caused by the energy consumption, reduces the leakage risk in the transporting process, greatly expands the capturing region range of the carbon dioxide, attracts more environment-friendly enterprises to add in capturing ranks of the carbon dioxide, enlarges the capturing teams of the carbon dioxide and increases the capturing amount of the carbon dioxide.

The purpose of the invention is realized as follows: the method comprises the steps of arranging carbon dioxide capture equipment at places where carbon dioxide is easy to gather, such as valleys, forests, depressions or underground caves which are close to a carbon dioxide storage place or an application place, starting the carbon dioxide capture equipment before dawn to collect carbon dioxide, purifying and compressing captured carbon dioxide, storing the carbon dioxide in a high-pressure tank with internal pressure resistance, and then intensively conveying the carbon dioxide to the storage place or the application place nearby through vehicles, ships or pipelines for storage or utilization.

The invention has the advantages that:

(1) the natural law that the carbon dioxide can automatically diffuse and migrate is fully utilized to realize the remote and dispersed capture of the carbon dioxide. Therefore, the method can avoid trapping carbon dioxide at the high-temperature kiln flue, greatly reduce the trapping difficulty of the carbon dioxide, avoid temperature reduction treatment, simplify the trapping process, reduce the required equipment and energy consumption for trapping, reduce the carbon dioxide emission caused by the equipment and the energy consumption, and reduce the trapping cost.

(2) The characteristic that the density of the carbon dioxide is higher than that of air is fully utilized, the carbon dioxide is collected at the places where the carbon dioxide is easy to gather, such as valleys, dense forests, depressions or underground caves, and the high concentration of the trapped carbon dioxide can be ensured.

(3) The natural law of carbon dioxide exhaled by plants in the absence of light is fully utilized, and the carbon dioxide is collected from dawn to early morning, so that the concentration of the collected carbon dioxide can reach a higher value in one day.

(4) Because the carbon dioxide collecting place is close to the sequestration place or the application place, the distance for conveying the collected carbon dioxide from the collecting place to the sequestration place or the application place is greatly shortened, which not only can obviously reduce the energy consumption required by transportation and greatly reduce the transportation cost, but also can correspondingly reduce the leakage risk in the transportation process.

(5) The mutual interference between the dust collection, the sulfur removal, the nitrogen removal and the like caused by the trapping at the flue can be avoided.

(6) The method has the advantages of low technical content, simple process flow and required equipment, low investment, convenient operation, and implementation of environment-friendly enterprises of different scales and even individual households.

(7) By adopting the method, the regional scope for capturing the carbon dioxide can be greatly expanded, the flexibility for capturing the carbon dioxide is increased, and more environment-friendly enterprises are attracted to be put into the project, so that the capture teams of the carbon dioxide are expanded, and employment posts are increased. More importantly, the expansion of the carbon dioxide capture team can increase the capture of carbon dioxide, which is highly beneficial for achieving net zero emission of carbon dioxide, and may even reduce the level of carbon dioxide in the atmosphere to levels prior to industrialization.

Detailed Description

The practice of the present invention is further illustrated by the following examples.

The first embodiment is as follows: at the places where carbon dioxide is easy to gather, such as valleys, forests, depressions or underground caves which are close to ocean points for storing carbon dioxide, perforated floral tubes are arranged into a communicated pipe network, the floral tubes are close to the ground, the pipe network is connected with air extraction equipment, the two pipe networks form an air extraction system together, the air extraction equipment is started to suck air before dawn, carbon dioxide gas with high concentration can be collected, the collected carbon dioxide gas is purified, compressed and stored in an internal pressure resistant high-pressure storage tank, and then the carbon dioxide gas is intensively sent to selected ocean points for storing carbon dioxide through vehicles, ships or pipelines.

Example two: at the places where carbon dioxide is easy to gather, such as valleys, forests, depressions or underground caves which are close to a selected carbon dioxide sequestration site or an application site thereof, a mobile air extraction device is adopted, air is sucked at the place close to the ground before dawn to early morning, so that carbon dioxide gas with higher concentration can be trapped, then the trapped carbon dioxide gas is purified and compressed, stored in a high-pressure storage tank with internal pressure resistance, and then is intensively sent to the selected carbon dioxide sequestration site for sequestration through a vehicle, a ship or a pipeline, or is transported to the application site for utilization.

Claims

1. A carbon dioxide capture method, characterized by: the carbon dioxide is captured at places where the carbon dioxide is easy to gather, such as valleys, dense forests, depressions or underground caves.

2. The method of claim 1, wherein: the carbon dioxide capture site is closer to the carbon dioxide sequestration site or its application site.

3. The method of claim 1, wherein: and (3) pumping carbon dioxide by adopting a movable pumping device or a pumping system consisting of a fixed pumping device and the perforated pipe.