JP2018514739A - 低nox燃焼方法 - Google Patents
低nox燃焼方法 Download PDFInfo
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- JP2018514739A JP2018514739A JP2017553330A JP2017553330A JP2018514739A JP 2018514739 A JP2018514739 A JP 2018514739A JP 2017553330 A JP2017553330 A JP 2017553330A JP 2017553330 A JP2017553330 A JP 2017553330A JP 2018514739 A JP2018514739 A JP 2018514739A
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- 238000009841 combustion method Methods 0.000 title abstract description 3
- 239000000446 fuel Substances 0.000 claims abstract description 71
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims description 90
- 239000007789 gas Substances 0.000 claims description 80
- 230000015572 biosynthetic process Effects 0.000 claims description 56
- 238000003786 synthesis reaction Methods 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- 239000007800 oxidant agent Substances 0.000 claims description 22
- 230000001590 oxidative effect Effects 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 58
- 239000003546 flue gas Substances 0.000 abstract description 55
- 239000000203 mixture Substances 0.000 abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 34
- 238000006722 reduction reaction Methods 0.000 description 21
- 230000009467 reduction Effects 0.000 description 18
- 238000002407 reforming Methods 0.000 description 17
- 238000006057 reforming reaction Methods 0.000 description 13
- 238000011084 recovery Methods 0.000 description 12
- 239000003345 natural gas Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000011521 glass Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000004071 soot Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000012634 fragment Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000006063 cullet Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005816 glass manufacturing process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
(A)炉内で燃料を燃焼させて、NOxを含むガス状燃焼生成物を生成することと、
(B)交互に、以下の(1)及び(2)を行うことと、を含む、方法である。
(1)NOxを含むガス状燃焼生成物を炉から冷却された第1の再生器内へ送り、通過させて、第1の再生器を加熱し、かつガス状燃焼生成物を冷却し、第1の再生器からの冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第2の再生器内へ送り、第2の再生器において、ガス状燃焼生成物と燃料とを吸熱反応で反応させて、ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び当該窒素を含む合成ガスを形成し、合成ガスを第2の再生器から炉内へ送り、合成ガスを炉内で燃焼させ、一方で、第1の再生器からのガス状燃焼生成物の残りを送って(本明細書で定義されるように)排気させること、並びに、
(2)NOxを含むガス状燃焼生成物を炉から冷却された第2の再生器内へ送り、通過させて、第2の再生器を加熱し、かつガス状燃焼生成物を冷却し、第2の再生器からの冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第1の再生器内へ送り、第1の再生器において、ガス状燃焼生成物と燃料とを吸熱反応で反応させて、ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び当該窒素を含む合成ガスを形成し、合成ガスを第1の再生器から炉内へ送り、合成ガスを炉内で燃焼させ、一方で、第2の再生器からのガス状燃焼生成物の残りを送って(本明細書で定義されるように)排気させること。
(A)炉内で燃料を燃焼させて、NOxを含むガス状燃焼生成物を生成することと、
(B)交互に、以下の(1)及び(2)を行うことと、を含む。
(1)NOxを含むガス状燃焼生成物を炉から冷却された第1の再生器内へ送り、通過させて、第1の再生器を加熱し、かつガス状燃焼生成物を冷却し、第1の再生器からの冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第2の再生器内へ送り、第2の再生器において、ガス状燃焼生成物と燃料とを吸熱反応で反応させて、ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び当該窒素を含む合成ガスを形成し、合成ガスを第2の再生器から炉内へ送り、合成ガスを炉内で多段燃焼によって燃焼させ、一方で、炉内のNOxを含むガス状燃焼生成物を、第2の再生器から炉に入る合成ガス流に取り込み、多段燃焼の燃料リッチゾーンにおいて合成ガス流中のNOxを還元すること、並びに、
(2)NOxを含むガス状燃焼生成物を炉から冷却された第2の再生器内へ送り、通過させて、第2の再生器を加熱し、かつガス状燃焼生成物を冷却し、第2の再生器からの冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第1の再生器内へ送り、第1の再生器において、ガス状燃焼生成物と燃料とを吸熱反応で反応させて、ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び当該窒素を含む合成ガスを形成し、合成ガスを第1の再生器から炉内へ送り、合成ガスを炉内で多段燃焼によって燃焼させ、一方で、炉内のNOxを含むガス状燃焼生成物を、第1の再生器から炉に入る合成ガス流に取り込み、多段燃焼の燃料リッチゾーンにおいて合成ガス流中のNOxを還元すること。
図1に示したような本発明のNOx低減装置及び方法は、この説明に使用される。推測されたNOx低減率は、以下の表1にまとめた。
Claims (12)
- 炉内で燃焼を行う方法であって、
(A)炉内で燃料を燃焼させて、NOxを含むガス状燃焼生成物を生成することと、
(B)交互に、以下の(1)及び(2)を行うことと、を含む、方法。
(1)NOxを含むガス状燃焼生成物を前記炉から冷却された第1の再生器内へ送り、通過させて、前記第1の再生器を加熱し、かつ前記ガス状燃焼生成物を冷却し、前記第1の再生器からの前記冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第2の再生器内へ送り、前記第2の再生器において、前記ガス状燃焼生成物と前記燃料とを吸熱反応で反応させて、前記ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び前記窒素を含む合成ガスを形成し、前記合成ガスを前記第2の再生器から前記炉内へ送り、前記合成ガスを前記炉内で燃焼させ、一方で、前記第1の再生器からの前記ガス状燃焼生成物の残りを送って排気させること、並びに、
(2)NOxを含むガス状燃焼生成物を前記炉から冷却された第2の再生器内へ送り、通過させて、前記第2の再生器を加熱し、かつ前記ガス状燃焼生成物を冷却し、前記第2の再生器からの前記冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第1の再生器内へ送り、前記第1の再生器において、前記ガス状燃焼生成物と前記燃料とを吸熱反応で反応させて、前記ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び前記窒素を含む合成ガスを形成し、前記合成ガスを前記第1の再生器から前記炉内へ送り、前記合成ガスを前記炉内で燃焼させ、一方で、前記第2の再生器からの前記ガス状燃焼生成物の残りを送って排気させること。 - 前記燃料及び前記合成ガスは、少なくとも50体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項1に記載の方法。
- 前記燃料及び前記合成ガスは、少なくとも90体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項1に記載の方法。
- NOxを含み、かつ前記炉で生成されていないガス流が、前記第1の再生器からのガス状燃焼生成物の前記第1の部分と共に、前記第2の再生器内へと送られ、また、NOxを含み、かつ前記炉で生成されていないガス流が、前記第2の再生器からのガス状燃焼生成物の前記第1の部分と共に、前記第1の再生器内へ送られる、請求項1に記載の方法。
- 前記燃料及び前記合成ガスは、少なくとも50体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項4に記載の方法。
- 前記燃料及び前記合成ガスは、少なくとも90体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項4に記載の方法。
- 炉内で燃焼を行う方法であって、
(A)炉内で燃料を燃焼させて、NOxを含むガス状燃焼生成物を生成することと、
(B)交互に、以下の(1)及び(2)を行うことと、を含む、方法。
(1)NOxを含むガス状燃焼生成物を前記炉から冷却された第1の再生器内へ送り、通過させて、前記第1の再生器を加熱し、かつ前記ガス状燃焼生成物を冷却し、前記第1の再生器からの前記冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第2の再生器内へ送り、前記第2の再生器において、前記ガス状燃焼生成物と前記燃料とを吸熱反応で反応させて、前記ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び前記窒素を含む合成ガスを形成し、前記合成ガスを前記第2の再生器から前記炉内へ送り、前記合成ガスを前記炉内で多段燃焼によって燃焼させ、一方で、前記炉内のNOxを含む前記ガス状燃焼生成物を、前記第2の再生器から前記炉に入る前記合成ガス流に取り込み、前記多段燃焼の燃料リッチゾーンにおいて前記合成ガス流中のNOxを還元すること、並びに、
(2)NOxを含むガス状燃焼生成物を前記炉から冷却された第2の再生器内へ送り、通過させて、前記第2の再生器を加熱し、かつ前記ガス状燃焼生成物を冷却し、前記第2の再生器からの前記冷却されたガス状燃焼生成物の第1の部分及び燃料を、加熱された第1の再生器内へ送り、前記第1の再生器において、前記ガス状燃焼生成物と前記燃料とを吸熱反応で反応させて、前記ガス状燃焼生成物中のNOxを窒素に還元し、水素、CO、及び前記窒素を含む合成ガスを形成し、前記合成ガスを前記第1の再生器から前記炉内へ送り、前記合成ガスを前記炉内で多段燃焼によって燃焼させ、一方で、前記炉内のNOxを含む前記ガス状燃焼生成物を、前記第1の再生器から前記炉に入る前記合成ガス流に取り込み、前記多段燃焼の燃料リッチゾーンにおいて前記合成ガス流中のNOxを還元すること。 - 前記燃料及び前記合成ガスは、少なくとも50体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項7に記載の方法。
- 前記燃料及び前記合成ガスは、少なくとも90体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項7に記載の方法。
- NOxを含み、かつ前記炉で生成されていないガス流が、前記第1の再生器からのガス状燃焼生成物の前記第1の部分と共に、前記第2の再生器内へと送られ、また、NOxを含み、かつ前記炉で生成されていないガス流が、前記第2の再生器からのガス状燃焼生成物の前記第1の部分と共に、前記第1の再生器内へ送られる、請求項7に記載の方法。
- 前記燃料及び前記合成ガスは、少なくとも50体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項10に記載の方法。
- 前記燃料及び前記合成ガスは、少なくとも90体積%の酸素を含む酸化剤によって、前記炉内で燃焼する、請求項10に記載の方法。
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US15/094,044 US10184659B2 (en) | 2015-04-15 | 2016-04-08 | Low-NOx combustion method |
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