Process for incinerating NH3 and a NH3 incinerator
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23G-007/06
F23J-015/02
F23N-005/00
B01D-053/58
B01J-012/00
B01D-053/34
B01D-053/52
F23L-007/00
F23N-003/00
출원번호
US-0343808
(2012-09-07)
등록번호
US-9115893
(2015-08-25)
우선권정보
NL-2007381 (2011-09-09)
국제출원번호
PCT/NL2012/050626
(2012-09-07)
§371/§102 date
20140509
(20140509)
국제공개번호
WO2013/036124
(2013-03-14)
발명자
/ 주소
Betlem, Maarten
Olsthoorn, Sjaak
Van Welsen, Mark
출원인 / 주소
Duiker Combustion Engineers B.V.
대리인 / 주소
Davison, Barry L.
인용정보
피인용 횟수 :
1인용 특허 :
2
초록▼
This invention relates to a process for incinerating NH3 in an NH3 incinerator comprising a first incineration step at controlled sub-stoichiometric incineration conditions and a second incineration step with at a greater than stoichiometric amount of oxygen, whereby a product stream is produced wit
This invention relates to a process for incinerating NH3 in an NH3 incinerator comprising a first incineration step at controlled sub-stoichiometric incineration conditions and a second incineration step with at a greater than stoichiometric amount of oxygen, whereby a product stream is produced with reduced NO formation. The invention also relates to an NH3 incinerator.
대표청구항▼
1. A process for incinerating NH3 in an NH3 incinerator comprising: a. a first incineration step comprising: i. reacting a gas stream comprising NH3 or reacting the gas stream comprising NH3 together with a fuel stream, under incineration conditions, with a first oxygen containing stream, at a sub-s
1. A process for incinerating NH3 in an NH3 incinerator comprising: a. a first incineration step comprising: i. reacting a gas stream comprising NH3 or reacting the gas stream comprising NH3 together with a fuel stream, under incineration conditions, with a first oxygen containing stream, at a sub-stoichiometric amount of oxygen in the first oxygen-containing stream with respect to the NH3 in the gas stream, whereby a first product stream is produced;ii. analyzing the composition of the first product stream for content of residual NH3 and/or formed HCN and/or formed NO, andiii. adjusting one or more of the streams based on the analysis of the first product stream so as to produce an adjusted first product stream containing both residual NH3 and NO, but no more than 250 ppm NH3 and no more than 250 ppm NO; andb. a second incineration step comprising i. reacting the adjusted first product stream under incineration conditions with a second oxygen-containing stream at a greater than stoichiometric amount of oxygen, whereby a second product stream is produced. 2. The process of claim 1, wherein the gas stream comprises a volume % NH3 amount selected from the volume % group consisting of at least 30 volume %, at least 50 volume %, and at least 60 volume %. 3. The process of claim 2, wherein the gas stream comprises a volume % H2S amount selected from the volume % group consisting of at most 40 volume % H2S, and at most 5 volume % H2S. 4. The process of claim 1, wherein the amount of oxygen is in the range of 50 to 99% of stoichiometry with respect to the combustible components that are present in the gas streams. 5. The process of claim 4, wherein NH3 is the only combustible component and the amount of oxygen is in the range of 95 to 98% of stoichiometry with respect to the NH3 in the gas stream. 6. The process of claim 1, wherein the first product stream is analysed for residual NH3 content. 7. The process of claim 1, wherein the first product stream is analysed for formed HCN content. 8. The process of claim 1, wherein the first product stream is analysed for formed NO content. 9. The process of claim 6, wherein one or more of the reactant stream, or the first oxygen-containing stream is adjusted such that the residual NH3 content of the first product stream is less than 100 ppm. 10. The process of claim 7, wherein one or more of the reactant stream, or the first oxygen-containing stream is adjusted such that the formed HCN content of the first product stream is less than 1400 ppm. 11. The process of claim 8, wherein one or more of the reactant stream, or the first oxygen-containing stream is adjusted such that the formed NO content of the first product stream is less than 200 ppm. 12. The process of claim 1, wherein the composition of the first product stream is analysed continuously or at intervals of 5 seconds or less. 13. The process of claim 1, wherein the fuel stream is co-reacted with the gas stream and first oxygen-containing stream. 14. The process of claim 13, wherein the ratio of the fuel stream to the NH3 containing gas stream is such as to maintain a reaction temperature in the range of 950 to 1700° C. 15. The process claim 13, wherein the fuel stream comprises at least one selected from the group consisting of hydrocarbons, hydrogen sulphide, carbon monoxide and hydrogen gas. 16. The process of claim 1, wherein the second oxygen-containing stream is reacted in an amount such that the residual amount of oxygen in the second product stream is at least 0.5 volume %. 17. The process of claim 1, wherein a waste gas is co-reacted with the second oxygen-containing stream. 18. The process of claim 1, wherein reaction heat of the first incineration step and/or the second incineration step is recovered. 19. An NH3 incinerator comprising: a. a first reaction zone 100 comprising: a burner 110 for incinerating NH3; an inlet 120 at the burner 110 for a first oxygen-containing stream, provided with a first oxygen control means 121 for adjusting the amount of the first oxygen-containing stream; an inlet 130 at the burner 110 for a gas stream comprising NH3 optionally provided with a first NH3 control means 131 for adjusting the amount of the NH3-containing gas stream; an inlet 140 at the burner 110 for a fuel stream optionally provided with a first fuel control means 141 for adjusting the amount of the fuel stream; an outlet 160 downstream of the reaction zone 100 for a first product stream prepared in the reaction zone 100; an analyser 170 at the end of the reaction zone 100 capable of analyzing the content of NH3 and/or HCN and/or NO in the first product stream prepared in the reaction zone 100 and capable of adjusting one or more of the first control means 121, 131 and 141; and optionally a temperature control means 180 downstream of the reaction zone 100; andb. a second reaction zone 200 downstream of the first reaction zone 100 for incinerating the first adjusted product stream prepared in the reaction zone 100, comprising: an inlet 230 at the start of the second reaction zone 200 for the first adjusted product stream prepared in the first reaction zone 100; an inlet 220 at the start of the second reaction zone 200 for a second oxygen-containing stream, optionally provided with a second control means 221 for adjusting the amount of the second oxygen-containing stream; optionally a second burner 210 provided with an inlet 211 at the second burner 210 for a third oxygen-containing stream, and an inlet 212 at the second burner 210 for a second fuel stream; optionally an inlet 250 at the start of the reaction zone 200 for a waste stream; an outlet 260 downstream of the reactor zone 200 for a second product stream prepared in the reaction zone 200; optionally an analyser 270 at the end of the reactor zone 200 capable of analyzing the content of oxygen in the second product stream prepared in the reaction zone 200 or an analyser 270 at the end of the reactor zone 200 capable of analyzing the content of oxygen in the second product stream prepared in the reaction zone 200 and capable of adjusting the second control means 221; and optionally a waste heat boiler 280 downstream of the reactor zone 200 for recovery of reaction heat. 20. The NH3 incinerator of claim 19, wherein the analyser 170 is a laser diode. 21. The NH3 incinerator of claim 19, wherein both reaction zones are part of a single reactor vessel. 22. The NH3 incinerator of claim 19, wherein each reaction zone is a separate reactor vessel, and wherein both reactor vessels are connected.
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이 특허에 인용된 특허 (2)
Stephen Rhys Graville GB, Destruction of waste gas.
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