KR20200034144 (A)

Method for capturing storaging and using carbon dioxide in waste gas of cement production comprising the using of waste heat of cement calcination process 

(22) 21.09.2018

(43) 31.03.2020

(57) The present invention is a first step of cooling the exhaust gas containing carbon dioxide discharged from the cement kiln and sending it to an absorption tower filled with a carbon dioxide absorber to absorb the carbon dioxide contained in the exhaust gas into the absorber; A second step of sending the absorbent absorbing the carbon dioxide to the regeneration tower and heating the absorbent absorbing the carbon dioxide by heating the absorbent absorbed by the waste heat recovered and recovered in the cement firing process; And a third step of producing liquefied carbonic acid by compressing and cooling the separated carbon dioxide, or by mixing the separated carbon dioxide, powdered lime (Lime, CaO) and water to produce precipitated calcium carbonate. It relates to a method of capturing, storing and using carbon dioxide. According to the present invention, not only can CO2 be directly collected (CCUS) before being discharged into the atmosphere to reduce greenhouse gas, but also highpurity PCC and liquefied carbonic acid can be produced using the collected CO to be utilized in related industries. Emission rights can be obtained.

(71) Sungshin Cement Co Ltd (KR)

x

Related articles:

Issue 3/2020 WO 2019/225202 A1

Treatment method for reducing carbon dioxide discharge amount of combustion exhaust gas

(22) 11.04.2019 (43) 28.11.2019 (57) The present invention pertains to an efficient method for refining sodium carbonate using natural sodium carbonate ore comprising Na2CO3 and NaHCO3, and a method...

more
Issue 10/2020 KR102128428 (B1)

Carbon dioxide capture device in exhaust gas of cement calcination process

(22) 27.12.2018 (43) 30.06.2020 (57) The present invention relates to an apparatus for collecting carbon dioxide in exhaust gas of a cement sintering process to increase the efficiency of the...

more
Issue 4/2023 WO 2023/054239 A1

Method for fixing carbon dioxide, method for producing calcium carbonate, and method for utilizing waste gypsum board

(22) 26.09.2022 (43) 06.04.2023 (57) The present invention provides a method whereby carbon dioxide can be efficiently fixed and calcium carbonate, which is a valuable, can be efficiently produced...

more
Issue 1/2024 WO 2023/210876 A1

System for capturing and recycling carbon dioxide and producing hydrogen for cement manufacturing facility

(22) 01.07.2022 (43) 02.11.2023 (57) The present invention relates to a system for capturing and recycling carbon dioxide and producing hydrogen for a cement manufacturing facility. An embodiment of...

more
Issue 10/2020 KR20200065160 (A)

The all in one type system of carbon dioxide collecting and transforming into carbonated mineral at cement industry

(22) 29.11.2018 (43) 09.06.2020 (57) The present invention is a cation extraction unit for selectively extracting cations using an extractant from waste discharged from the cement production process;...

more