JPS558814A - Purification of waste gas of nox absorption tower - Google Patents
Purification of waste gas of nox absorption towerInfo
- Publication number
- JPS558814A JPS558814A JP8048478A JP8048478A JPS558814A JP S558814 A JPS558814 A JP S558814A JP 8048478 A JP8048478 A JP 8048478A JP 8048478 A JP8048478 A JP 8048478A JP S558814 A JPS558814 A JP S558814A
- Authority
- JP
- Japan
- Prior art keywords
- waste gas
- ammonium nitrate
- nitrite
- pressure
- gas
- 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
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To prevent a danger of explosion due to accumulation of ammonium nitrate, etc. by washing a waste gas in a spray tower to reduce amounts of ammonium nitrate and ammonium nitrite to below a given amount, elevating the pressure, heating, adding NH3 and decomposing NOx in a reactor filled with a catalyst.
CONSTITUTION: Waste gas containing NOx and small amount of ammonium nitrate and nitrite, is washed in a spray tower under a spray pressure of 2 to 20 kg/cm2, in a total spray amount of 2 to 20 l per Nm3 of the waste gas and at a temperature of below 30°C, to reduce the total amount of ammonium nitrate and nitrite present in the waste gas to below 20 ppm. After elevating the pressure, heating and adding NH3 to the gas, the resulting gas is introduced into a reactor 5 filled with a catalyst. NOx is decomposed by a catalytic decomposition reaction to remove it. A preferred gas pressure of the waste gas to be introduced into the reactor 5 is from 300 to 800 mAq, and the preferred temperature is from 250 to 400°C. The operation can be conducted continuously for a long time without the accumulation of ammonium nitrate and nitrite in any steps. The waste gas can be purified without the danger of explosion.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8048478A JPS558814A (en) | 1978-07-04 | 1978-07-04 | Purification of waste gas of nox absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8048478A JPS558814A (en) | 1978-07-04 | 1978-07-04 | Purification of waste gas of nox absorption tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS558814A true JPS558814A (en) | 1980-01-22 |
| JPS618731B2 JPS618731B2 (en) | 1986-03-17 |
Family
ID=13719546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8048478A Granted JPS558814A (en) | 1978-07-04 | 1978-07-04 | Purification of waste gas of nox absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS558814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4940889A (en) * | 1972-08-25 | 1974-04-17 | ||
| JPS6156431A (en) * | 1984-08-28 | 1986-03-22 | Nec Corp | High-voltage semiconductor integrated circuit |
| CN112978635A (en) * | 2021-02-24 | 2021-06-18 | 广东大唐国际雷州发电有限责任公司 | Lifting device for operation platform of absorption tower |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01234707A (en) * | 1988-03-11 | 1989-09-20 | Rinnai Corp | Infrared radiation combustion plate and baking burner and heating burner using the plate |
-
1978
- 1978-07-04 JP JP8048478A patent/JPS558814A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4940889A (en) * | 1972-08-25 | 1974-04-17 | ||
| JPS6156431A (en) * | 1984-08-28 | 1986-03-22 | Nec Corp | High-voltage semiconductor integrated circuit |
| CN112978635A (en) * | 2021-02-24 | 2021-06-18 | 广东大唐国际雷州发电有限责任公司 | Lifting device for operation platform of absorption tower |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS618731B2 (en) | 1986-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5477277A (en) | Method and apparatus for reducing nitrogen oxides in combustion exhaust gas | |
| ZA913560B (en) | Process for the removal of nitrogen from waste gases with the extraction of hno3 | |
| JPS558814A (en) | Purification of waste gas of nox absorption tower | |
| JPS5394271A (en) | Absorbing and removing method of nox in exhaust gas | |
| JPS544873A (en) | Decomposing method for nitrogen oxides | |
| JPS5483678A (en) | Method and apparatus for removing nitrogen oxides in exhaust gas | |
| JPS5719022A (en) | Operation of denitration apparatus | |
| US4044111A (en) | Method of treating calcium nitrate contained in denitration waste liquid | |
| JPS53146261A (en) | Catalytic reaction tower | |
| JPS5351657A (en) | Method for disposing organic waste water | |
| JPS54132472A (en) | Treating method for exhaust gas containing nitrogen oxides | |
| JPS5581728A (en) | Gas treating method | |
| JPS52141478A (en) | Treatment of waste gas exhausted from urea pelletizing process | |
| JPS52765A (en) | An exhaust gas denitration process | |
| JPS54135664A (en) | Denitrating method by reduction with ammonia | |
| JPS5310364A (en) | Decomposing method of ammonia | |
| JPS5474270A (en) | Nitrogen oxide decpomosition | |
| JPS54151917A (en) | Elimination of explosiveness of tail gas of urea preparation process | |
| JPS5544365A (en) | Treating method for waste gas | |
| JPS55100358A (en) | Recovery of effective component from exhaust gas of methionine synthesis | |
| JPS52130473A (en) | Decomposition of nitrogen oxides | |
| JPS5314678A (en) | Simultaneous treating method for desulfurization and denitration of lue gas | |
| JPS53106667A (en) | Decomposing method by reduction for nitrogen oxides | |
| JPS54143768A (en) | Exhaust gas deodorizing method | |
| JPS54136572A (en) | Treating method for combustion exhaust gas |