JPS5570325A - Reduction of oxides of nitrogen in exhaust gas - Google Patents
Reduction of oxides of nitrogen in exhaust gasInfo
- Publication number
- JPS5570325A JPS5570325A JP14184878A JP14184878A JPS5570325A JP S5570325 A JPS5570325 A JP S5570325A JP 14184878 A JP14184878 A JP 14184878A JP 14184878 A JP14184878 A JP 14184878A JP S5570325 A JPS5570325 A JP S5570325A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- line
- resulting
- gas
- air
- 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
- 239000007789 gas Substances 0.000 title abstract 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title 2
- 229910052757 nitrogen Inorganic materials 0.000 title 1
- 239000000446 fuel Substances 0.000 abstract 3
- 238000005406 washing Methods 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000003245 coal Substances 0.000 abstract 2
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000567 combustion gas Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To improve the rate of denitration in exhaust gas without particular denitrating agent by gasifying part of fuel such as coal in an insufficient amount of oxygen, washing produced NH3 to remove it, adding the resulting gas to main fuel, and adding combustion exhaust gas, air and washing water containing NH3 to the resulting stream.
CONSTITUTION: Part of fuel such as coal, petroleum is gasified in an insufficient amount of oxygen in a pyrolysis gasifying furnace 4. The produced NH3 is removed by means of a scrubber 5. The resulting gas containing CH compounds is added through a line 1i to main combustion exhaust gas of a boiler 1. a small amount of combustion gas and/or air is supplied through a line 1d to the resulting stream so that the O2 concentration in the stream becomes below 0.5% by volume. Most of HCN, NH3 are converted to N2. A sufficient amount of air is supplied through a line 1e to the resulting stream in order to remove unburned part. The washing containing NH3 is introduced through a line 1f into a temperature zone of about 1000°C in the resulting stream, thereby the reduction of NOX is made possible by NH3- denitration reaction.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53141848A JPS5925618B2 (en) | 1978-11-17 | 1978-11-17 | Method for reducing nitrogen oxides in exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53141848A JPS5925618B2 (en) | 1978-11-17 | 1978-11-17 | Method for reducing nitrogen oxides in exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5570325A true JPS5570325A (en) | 1980-05-27 |
| JPS5925618B2 JPS5925618B2 (en) | 1984-06-19 |
Family
ID=15301561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53141848A Expired JPS5925618B2 (en) | 1978-11-17 | 1978-11-17 | Method for reducing nitrogen oxides in exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5925618B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59115904A (en) * | 1982-12-23 | 1984-07-04 | Hitachi Ltd | Combustion of pulverized coal |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61121504U (en) * | 1985-01-17 | 1986-07-31 | ||
| JPS61180910A (en) * | 1985-02-06 | 1986-08-13 | Canon Electronics Inc | Composite magnetic head |
-
1978
- 1978-11-17 JP JP53141848A patent/JPS5925618B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59115904A (en) * | 1982-12-23 | 1984-07-04 | Hitachi Ltd | Combustion of pulverized coal |
| JPS6260606B2 (en) * | 1982-12-23 | 1987-12-17 | Hitachi Seisakusho Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5925618B2 (en) | 1984-06-19 |
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