JPS551858A - Reduction and denitrification by ammonia - Google Patents
Reduction and denitrification by ammoniaInfo
- Publication number
- JPS551858A JPS551858A JP7498278A JP7498278A JPS551858A JP S551858 A JPS551858 A JP S551858A JP 7498278 A JP7498278 A JP 7498278A JP 7498278 A JP7498278 A JP 7498278A JP S551858 A JPS551858 A JP S551858A
- Authority
- JP
- Japan
- Prior art keywords
- waste gas
- amount
- denitrification
- reactor
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To perform stable denitrification and also to make unreacted NH3 zero in spite of variable NOx concentration by providing a denitrification reactor having catalyst, adsorbent, etc., to absorb and desorb NH3 and by controlling the amount of NH3 in such a way that the indwelling substances can hold NH3 amount corresponding to the maximum adsorbed amount all the time.
CONSTITUTION: The NOx-containing waste gas from the waste gas source 1 is first heat-exchanged by the heating furnace 5 to rise its temperature, then added NH3 from the line 8, and then introduced into the denitrification reactor 11 with NH3-adsorbing and desorbing function (e.g., catalyst) for denitrification. The denitrified waste gas is heat-exchanged and then released from the stack to the outside. On the other hand, the signal 19 of the waste gas analyzer 16 is put in the NH3 controller 17 and the electromagnetic valve 9 is controlled by the signal 20 of the controller 17 in such a way that the amount of NH3 supplied is kept all the time so as to keep the amount corresponding to the maximum NH3 adsorption capability value or less of the reactor 11; that is, the instantaneous value of NH3 supplied at one time is more than the instantaneous NOx maximum value equivalent in waste gas, or the supplying time is set up to the possible maximum adsorption amount of NH3 of the reactor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7498278A JPS551858A (en) | 1978-06-21 | 1978-06-21 | Reduction and denitrification by ammonia |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7498278A JPS551858A (en) | 1978-06-21 | 1978-06-21 | Reduction and denitrification by ammonia |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS551858A true JPS551858A (en) | 1980-01-09 |
JPS5743294B2 JPS5743294B2 (en) | 1982-09-14 |
Family
ID=13562989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7498278A Granted JPS551858A (en) | 1978-06-21 | 1978-06-21 | Reduction and denitrification by ammonia |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS551858A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58128126A (en) * | 1982-01-28 | 1983-07-30 | Babcock Hitachi Kk | Method for introducing reducing agent |
JPS58174227A (en) * | 1982-04-06 | 1983-10-13 | Babcock Hitachi Kk | Method for controlling charging amount of ammonia in denitration apparatus |
JPS61254229A (en) * | 1985-05-02 | 1986-11-12 | Babcock Hitachi Kk | Apparatus for controlling injection amount of ammonia |
JPH04265124A (en) * | 1991-02-21 | 1992-09-21 | Sumitomo Chem Eng Kk | Denitration method |
JP2002177741A (en) * | 2000-12-18 | 2002-06-25 | Miura Co Ltd | Method of controlling denitration apparatus in boiler |
JP2004535911A (en) * | 2001-02-26 | 2004-12-02 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニー | Gas processing using NOx-specific reactants |
JP2012050912A (en) * | 2010-08-31 | 2012-03-15 | Nippon Steel Engineering Co Ltd | Denitration controller and denitration control method |
CN108064188A (en) * | 2015-03-26 | 2018-05-22 | 康宁股份有限公司 | For selective non-catalytic NOXThe method and system of reduction |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50128679A (en) * | 1974-03-30 | 1975-10-09 | ||
JPS5116273A (en) * | 1974-07-31 | 1976-02-09 | Hitachi Ltd | DATSUSHOSOCHINIOKERU NH3 CHUNYURYONO SEIGYOHO |
JPS5490064A (en) * | 1977-12-28 | 1979-07-17 | Jgc Corp | Method of removing nitrogen oxide contained in exhaust gas |
-
1978
- 1978-06-21 JP JP7498278A patent/JPS551858A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50128679A (en) * | 1974-03-30 | 1975-10-09 | ||
JPS5116273A (en) * | 1974-07-31 | 1976-02-09 | Hitachi Ltd | DATSUSHOSOCHINIOKERU NH3 CHUNYURYONO SEIGYOHO |
JPS5490064A (en) * | 1977-12-28 | 1979-07-17 | Jgc Corp | Method of removing nitrogen oxide contained in exhaust gas |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58128126A (en) * | 1982-01-28 | 1983-07-30 | Babcock Hitachi Kk | Method for introducing reducing agent |
JPH0367728B2 (en) * | 1982-01-28 | 1991-10-24 | Babcock Hitachi Kk | |
JPS58174227A (en) * | 1982-04-06 | 1983-10-13 | Babcock Hitachi Kk | Method for controlling charging amount of ammonia in denitration apparatus |
JPH0411248B2 (en) * | 1982-04-06 | 1992-02-27 | ||
JPS61254229A (en) * | 1985-05-02 | 1986-11-12 | Babcock Hitachi Kk | Apparatus for controlling injection amount of ammonia |
JPH0582246B2 (en) * | 1985-05-02 | 1993-11-18 | Babcock Hitachi Kk | |
JPH04265124A (en) * | 1991-02-21 | 1992-09-21 | Sumitomo Chem Eng Kk | Denitration method |
JP2002177741A (en) * | 2000-12-18 | 2002-06-25 | Miura Co Ltd | Method of controlling denitration apparatus in boiler |
JP2004535911A (en) * | 2001-02-26 | 2004-12-02 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニー | Gas processing using NOx-specific reactants |
JP2012050912A (en) * | 2010-08-31 | 2012-03-15 | Nippon Steel Engineering Co Ltd | Denitration controller and denitration control method |
CN108064188A (en) * | 2015-03-26 | 2018-05-22 | 康宁股份有限公司 | For selective non-catalytic NOXThe method and system of reduction |
JP2018512998A (en) * | 2015-03-26 | 2018-05-24 | コーニング インコーポレイテッド | Method and system for selective non-catalytic NOx reduction |
Also Published As
Publication number | Publication date |
---|---|
JPS5743294B2 (en) | 1982-09-14 |
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