System and method for directly capturing carbon dioxide from air by using clean energy

A clean energy and carbon dioxide technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of large footprint, high energy consumption of direct air capture technology, and influence of adsorbent life and stability, etc. Achieve the effect of utilizing the floor space, reducing the thermal desorption time, and increasing the carbon capture rate

Active Publication Date: 2022-05-17
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a system and method for direct air capture of carbon dioxide using clean energy to solve the high energy consumption of the direct air capture technology using clean energy in the prior art, and the device is in the adsorption / The area occupied by the thermal desorption stage is too large, and the heat carrier and CO in the thermal desorption stage 2 Problems affecting the life and stability of the adsorbent during direct heat exchange of the adsorbent

Method used

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  • System and method for directly capturing carbon dioxide from air by using clean energy
  • System and method for directly capturing carbon dioxide from air by using clean energy
  • System and method for directly capturing carbon dioxide from air by using clean energy

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Embodiment 1

[0049] like Figure 1-3 As shown, the present invention provides a system for utilizing clean energy to directly capture carbon dioxide from the air, comprising:

[0050] Energy supply / energy storage module, pretreatment module, adsorption thermal desorption module and CO 2 storage module;

[0051] The energy supply / energy storage module is used to provide electric energy and heat energy to the whole system through clean energy; and store the excess clean energy collected in the battery;

[0052] The pre-treatment module is used to capture and pre-treat the inhaled air;

[0053] The adsorption thermal desorption module is used to adsorb carbon dioxide in the air and CO after thermal desorption adsorption 2 ;

[0054] CO 2 The storage module is used to store CO after thermal desorption 2 .

[0055] The pretreatment module includes a first ventilation device 101 and a pretreatment device 3; multiple groups of venturi tubes are arranged in the first ventilation device 101;...

Embodiment 2

[0079] The invention provides a method of utilizing clean energy to directly capture carbon dioxide from the air, comprising:

[0080] Step 1: CO 2 capture and adsorption

[0081] The Venturi tube provided in the first ventilation device 101 produces a continuous low pressure so that the air enters the first ventilation device 101 and passes through the optional pretreatment device 3, and then sucks into the adsorption regeneration chamber 9, and the adsorbent in the adsorption regeneration chamber 9 Adsorption on load module 11 followed by low CO concentration 2 The air in the adsorption regeneration chamber 9 is exhausted from the second ventilation device 102 to the atmosphere through the air outlet of the adsorption regeneration chamber 9;

[0082] Step 2: CO 2 thermal desorption

[0083] After 0.3-0.5 hours of continuous air flow, the CO in the adsorption regeneration chamber 9 2 The concentration detector 13 detects the CO in the adsorption regeneration chamber 9 2...

Embodiment 3

[0089] like figure 1 Shown, when clean energy is solar energy, a kind of method of utilizing clean energy direct air capture carbon dioxide of the present invention comprises:

[0090] Step A: Preprocessing Phase

[0091] The light intensity detector includes a light intensity detector and a photosensitive matrix, and the light intensity detector detects and transmits real-time sunlight intensity data to the single-chip microcomputer 8 in real time. The photosensitive matrix is ​​composed of multiple photosensitive elements arranged in a matrix, and the direction of the current light source of sunlight is calculated by obtaining multiple electrical signals output by the photosensitive matrix. If the direction of light is consistent with the direction of light energy received by the current photovoltaic power generation device, the system does not need to be adjusted. If the direction is not consistent, the direction of the photovoltaic power generation device is controlled by...

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Abstract

The invention belongs to the technical field of carbon emission reduction, and particularly relates to a system and method for directly capturing carbon dioxide in air by using clean energy, and the system comprises an energy supply/storage module, a pretreatment module, an adsorption thermal desorption module and a CO2 storage module; the energy supply/storage module is used for providing electric energy and heat energy for the whole system through clean energy; the collected redundant clean energy is stored in the battery; the pretreatment module is used for capturing and pretreating the sucked air; the adsorption and thermal desorption module is used for adsorbing carbon dioxide in air and thermally desorbing adsorbed CO2; and the CO2 storage module is used for storing CO2 after thermal desorption. A large amount of surplus clean energy can be utilized, a large amount of light abandoning and wind abandoning phenomena are caused by incomplete coverage of a power grid structure in many areas with abundant clean energy, the system is deployed in the areas, the clean energy which is not easy to collect and transmit is used for supplying energy to the system, and the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of carbon emission reduction, and in particular relates to a system and method for directly capturing carbon dioxide from air using clean energy. Background technique [0002] The proportion of carbon in the existing energy structure is relatively high, with carbon emissions reaching 9.894 billion tons. More effective, lower-cost, and more energy-saving carbon capture technologies are needed. [0003] Existing carbon capture technologies for stationary point sources are difficult to capture low concentrations of CO in the air 2 CO emissions from distributed sources such as millions of small fossil fuel burning devices and hundreds of millions of vehicles 2 , it is difficult to achieve net emissions and achieve true "negative carbon emissions". [0004] At present, the direct capture of CO in the air developed by foreign companies 2 The device (DAC device) mainly adopts the lye absorption method. The main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02
CPCB01D53/02B01D2259/4009B01D2257/504Y02C20/40
Inventor 吴志强王鼎杨伯伦张杰张榕江郭伟
Owner XI AN JIAOTONG UNIV
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