Title:
DIRECT AIR CAPTURING METHOD OF CARBON DIOXIDE
Document Type and Number:
WIPO Patent Application WO/2023/246097
Kind Code:
A1
Abstract:
The present application provides a direct air capturing method of carbon dioxide, comprising the following steps: (1) an absorption stage: absorbing and capturing carbon dioxide in the air by means of an adsorbent till saturation; (2) a desorption and regeneration stage: in a high-vacuum state, heating the adsorbent to 105-110°C, desorbing and regenerating the adsorbent, and releasing pure carbon dioxide gas; and (3) a cooling stage: cooling the adsorbent to the room temperature by using air, and then performing the next absorption-desorption and regeneration cycle. The adsorbent is prepared by means of a method comprising the following steps: mixing pulverized coal with a potassium carbonate solution, and performing activation treatment to generate a porous carbon material; and mixing the porous carbon material with carbon nanotubes and an ionic liquid, and then performing carbonization treatment to obtain the adsorbent. According to the direct air capturing method of carbon dioxide in the present application, carbon dioxide in the air can be efficiently absorbed, too high regeneration energy consumption is not needed, the cost is low, and the process is simple and easy to operate.
Inventors:
ZHENG ZHAOFANG (CN)
WANG HUANJUN (CN)
GUO DONGFANG (CN)
DU BINGXIAO (CN)
LIU RENLONG (CN)
SUN WENLI (CN)
ZHOU XING (CN)
ZHANG XU (CN)
YIN LIMIN (CN)
DENG ZHENGXIN (CN)
SHEN YULING (CN)
WANG HUANJUN (CN)
GUO DONGFANG (CN)
DU BINGXIAO (CN)
LIU RENLONG (CN)
SUN WENLI (CN)
ZHOU XING (CN)
ZHANG XU (CN)
YIN LIMIN (CN)
DENG ZHENGXIN (CN)
SHEN YULING (CN)
Application Number:
PCT/CN2023/072896
Publication Date:
December 28, 2023
Filing Date:
January 18, 2023
Export Citation:
Assignee:
HUANENG CLEAN ENERGY RES INST (CN)
International Classes:
B01D53/04; B01J20/20; B01J20/30
Foreign References:
| CN115155239A | 2022-10-11 | |||
| US20210187480A1 | 2021-06-24 | |||
| CN114272892A | 2022-04-05 | |||
| JP2004091760A | 2004-03-25 | |||
| CN107614090A | 2018-01-19 | |||
| CN109201007A | 2019-01-15 | |||
| CN114307535A | 2022-04-12 | |||
| US20210387130A1 | 2021-12-16 | |||
| US6547854B1 | 2003-04-15 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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