US 11,965,446 B2
System for reducing VOC and nitrogen oxide and method for reducing same
Jin Hee Lee, Daejeon (KR); Iljeong Heo, Daejeon (KR); Tae Sun Chang, Daejeon (KR); Ji Hoon Park, Daejeon (KR); Sang Joon Kim, Daejeon (KR); and Young Jin Kim, Daejeon (KR)
Assigned to KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
Appl. No. 17/432,063
Filed by KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
PCT Filed Feb. 20, 2020, PCT No. PCT/KR2020/002441
§ 371(c)(1), (2) Date Aug. 18, 2021,
PCT Pub. No. WO2020/171615, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 10-2019-0019694 (KR), filed on Feb. 20, 2019; and application No. 10-2019-0020244 (KR), filed on Feb. 21, 2019.
Prior Publication US 2022/0195902 A1, Jun. 23, 2022
Int. Cl. B01D 53/94 (2006.01); B01D 53/04 (2006.01); B01D 53/30 (2006.01); F01N 3/20 (2006.01); F01N 3/28 (2006.01)
CPC F01N 3/202 (2013.01) [B01D 53/0438 (2013.01); B01D 53/30 (2013.01); B01D 53/9431 (2013.01); B01D 53/9481 (2013.01); B01D 53/9495 (2013.01); F01N 3/208 (2013.01); F01N 3/2803 (2013.01); B01D 2253/108 (2013.01); B01D 2257/708 (2013.01); F01N 2370/04 (2013.01); F01N 2900/1402 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A VOC reduction system comprising:
a housing having an inlet and an outlet formed such that gas is introduced and discharged therethrough;
an adsorption/desorption module disposed in the housing to adsorb/desorb volatile organic compounds (VOC) included in the gas;
a VOC front-end sensing unit disposed on one side of the adsorption/desorption module to sense the concentration of VOC adsorbed by the adsorption/desorption module;
a catalyst disposed on the other side of the adsorption/desorption module to oxidize VOC desorbed by the adsorption/desorption module;
a heating carrier disposed on one side of the catalyst to supply thermal energy directly to the catalyst; and
a VOC rear-end sensing unit disposed behind the heating carrier to sense the concentration of VOC converted by the catalyst,
wherein the heating carrier further includes a heating means supplying pulse type thermal energy, and
the heating means is associated with the VOC front-end sensing unit, and applies the pulse type thermal energy to the heating carrier when the VOC concentration sensed by the VOC front-end sensing unit is sensed as a predetermined value or higher.