Low-pollution burning method using system for individually controlling CO and NOx
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23D-014/00
F23G-007/06
출원번호
US-0686960
(2012-11-28)
등록번호
US-9182120
(2015-11-10)
우선권정보
KR-10-2012-0114895 (2012-10-16)
발명자
/ 주소
Kim, Jong Chul
Chung, Jong Kook
Lee, Sung Wook
Roh, Wan Gi
Kim, Sun Ho
Kang, Suk-Ho
출원인 / 주소
Global Standard Technology Co., Ltd.
대리인 / 주소
IP Legal Services, LLC
인용정보
피인용 횟수 :
1인용 특허 :
9
초록▼
The disclosure relates to a waste gas purification method, and more particularly, to a waste gas burning method of reducing CO and NOx by burning waste gases using a system for individually controlling CO and NOx. In accordance with the disclosure, there is provided a low-pollution burning method us
The disclosure relates to a waste gas purification method, and more particularly, to a waste gas burning method of reducing CO and NOx by burning waste gases using a system for individually controlling CO and NOx. In accordance with the disclosure, there is provided a low-pollution burning method using a system for individually controlling CO and NOx including a waste gas introduction and flame injection step; a first waste gas burning step; and a second waste gas burning step.
대표청구항▼
1. A low-pollution burning method of processing a waste gas generated in an industrial process, using a system for individually controlling CO and NOx, the low-pollution burning method comprising: a waste gas introduction and flame injection step of introducing the waste gas into a first combustion
1. A low-pollution burning method of processing a waste gas generated in an industrial process, using a system for individually controlling CO and NOx, the low-pollution burning method comprising: a waste gas introduction and flame injection step of introducing the waste gas into a first combustion region and generating a flame by igniting a fuel gas in which a combustible gas and a support gas are pre-mixed;a first waste gas burning step of burning the waste gas in the first combustion region by the waste gas coming into contact with the flame arising from igniting the fuel gas in which the combustible gas and the support gas are pre-mixed, wherein an equivalence ratio of the pre-mixed fuel gas is set to such a ratio that the waste gas is rich-burned in the first combustion region;a second waste gas burning step of inducing complete combustion by burning incomplete burned components comprising CO and CH4, which remain in a waste gas moved to a second combustion region after going through the first waste gas burning step, together with a support gas, which is additionally introduced into the second combustion region, in the second combustion region, wherein a temperature (T) distribution of the second combustion region is maintained less than a generation temperature of NOx;a third waste gas burning step of inducing complete combustion by burning the incomplete burned components which remain in a waste gas even after going through the second waste gas burning step, together with a support gas, which is additionally introduced into a third combustion region, in the third combustion region, wherein the second combustion region is surrounded by a flame guide wall that extends downwards from an upper wall of the second combustion region to a through hole of a lower wall of the second combustion region that connects to the third combustion region; anda waste gas discharge step of discharging a waste gas purified through the third waste gas burning step to the outside,wherein the combustible gas is made of any one or more of LNG (liquefied natural gas), LPG (liquefied petroleum gas), and hydrogen gas, and the support gas is made of any one or more of air and O2; andwherein the third combustion region is defined by an inner wall member positioned in an outer case member, wherein (i) the inner wall member has a hollow cylindrical shape being opened at opposite ends, and is connected to the second combustion region such that a waste gas discharged from the second combustion region passes through along a z-axis direction of the inner wall member, (ii) air is provided into a space region between the outer case member and the inner wall member, through at least one air inlet portion, and (iii) a side wall of the inner wall member includes a plurality of holes for inletting the air which is provided through the at least one air inlet portion such that heat generated in the third combustion region is uniformly distributed in the third combustion region. 2. The low-pollution burning method according to claim 1, wherein the generation of nitrogen oxide (NOx) is suppressed by adjusting an amount of the support gas which is pre-mixed with the combustible gas at the first waste gas burning step. 3. The low-pollution burning method according to claim 1, wherein the incomplete burned components comprising the CO and CH4 are removed and carbon monoxide (CO) is removed by adjusting an amount of the support gas which is additionally introduced at the second waste gas burning step. 4. The low-pollution burning method according to claim 1, wherein the waste gas is burned in a state in which the support gas is pre-mixed so that the equivalence ratio (Φ) of the pre-mixed fuel gas is set to satisfy the following range: 1.0≦equivalence ratio (Φ)≦2.0. 5. The low-pollution burning method according to claim 4, wherein the temperature (T) distribution of the second combustion region is set to satisfy the following range: 600° C. temperature (T) of second combustion region 800° C. 6. The low-pollution burning method according to claim 1, further comprising: a waste gas cooling step of cooling the purified waste gas before discharging the purified waste gas to the outside. 7. The low-pollution burning method according to claim 1, wherein the industrial process includes at least one of a chemical process, a semiconductor manufacturing process, and an LCD manufacturing process. 8. The low-pollution burning method according to claim 1, wherein: the outer case member has a hollow cylindrical shape; andthe inner wall member and the outer case member are coaxial. 9. The low-pollution burning method according to claim 1, wherein the at least one air inlet portion is configured to provide the air through the side wall of the outer case member. 10. The low-pollution burning method according to claim 1, wherein the pre-mixed fuel gas is introduced in the first combustion region through a plurality of nozzles which are disposed to be inclined toward one side with respect to a radial direction such that the pre-mixed fuel gases are rotated in the first combustion region. 11. The low-pollution burning method according to claim 1, wherein the waste gas is burned in a state in which the support gas is pre-mixed so that the equivalence ratio (Φ) of the pre-mixed fuel gas is set to satisfy the following range: 1.2 equivalence ratio (Φ)≦2.0. 12. The low-pollution burning method according to claim 1, wherein a diameter of the second combustion region is greater than a diameter of the first combustion region and less than a diameter of the third combustion region.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (9)
Ferron, Shawn; Kelly, John; Vermeulen, Robbert, Apparatus and method for controlled combustion of gaseous pollutants.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.