JPS56126436A - Moving bed type apparatus for denitration reaction - Google Patents
Moving bed type apparatus for denitration reactionInfo
- Publication number
- JPS56126436A JPS56126436A JP3029280A JP3029280A JPS56126436A JP S56126436 A JPS56126436 A JP S56126436A JP 3029280 A JP3029280 A JP 3029280A JP 3029280 A JP3029280 A JP 3029280A JP S56126436 A JPS56126436 A JP S56126436A
- Authority
- JP
- Japan
- Prior art keywords
- catalysts
- temp
- reactor
- gas
- waste 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/12—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by gravity in a downward flow
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
PURPOSE:To prevent the degradation in the activity of catalysts and the occurrence of dew point corrosion based on the temp. drop of the catalysts by heating the moving catalysts with a part of high-temp. waste gas in reducing and denitrating the waste combustion gas contg. NOx with NH3 by utilizing a moving catalyst bed. CONSTITUTION:NH3 gas is added from an NH3 injector 13 to the NOx-contg. waste gas G1 exhausted from a combustion device 1 such as boiler from the way of a pipeline 16. The NH3-mixed waste gas is sent by a fan 2 into a denitration reactor 3, is subjected to reduction denitration of NOx by NH3 in the catalysts moving therein from above to below and is exhausted as a denitrated gas G2. The catalysts move in the reactor 3 from above to below and are again circulated and supplied from the lower part of the reactor 3 to the upper part by a conveyor 7. At this time, part G3 of the high-temp. waste gas is taken out before it enters the reactor 3, is passed in the conveyor 4 to heat the catalysts and is again returned into the pipeline 16. Since the catalysts are heated, their temp. drop in dead spaces 4, 5 does not occur, hence the degradation of their activity and the dew point corrosion owing to moisture condensation are prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3029280A JPS56126436A (en) | 1980-03-12 | 1980-03-12 | Moving bed type apparatus for denitration reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3029280A JPS56126436A (en) | 1980-03-12 | 1980-03-12 | Moving bed type apparatus for denitration reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56126436A true JPS56126436A (en) | 1981-10-03 |
Family
ID=12299646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3029280A Pending JPS56126436A (en) | 1980-03-12 | 1980-03-12 | Moving bed type apparatus for denitration reaction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56126436A (en) |
-
1980
- 1980-03-12 JP JP3029280A patent/JPS56126436A/en active Pending
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