JPS57113834A - Catalyst structural body - Google Patents
Catalyst structural bodyInfo
- Publication number
- JPS57113834A JPS57113834A JP56000934A JP93481A JPS57113834A JP S57113834 A JPS57113834 A JP S57113834A JP 56000934 A JP56000934 A JP 56000934A JP 93481 A JP93481 A JP 93481A JP S57113834 A JPS57113834 A JP S57113834A
- Authority
- JP
- Japan
- Prior art keywords
- catalysts
- dust
- gases
- nox
- waste gases
- 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
- 239000003054 catalyst Substances 0.000 title abstract 9
- 239000000428 dust Substances 0.000 abstract 4
- 239000007789 gas Substances 0.000 abstract 3
- 239000002912 waste gas Substances 0.000 abstract 2
- 239000002440 industrial waste Substances 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
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
- B01J8/008—Details of the reactor or of the particulate material; Processes to increase or to retard the rate of reaction
- B01J8/0085—Details of the reactor or of the particulate material; Processes to increase or to retard the rate of reaction promoting uninterrupted fluid flow, e.g. by filtering out particles in front of the catalyst layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Catalysts (AREA)
Abstract
PURPOSE:To prevent clogging of dust in catalysts by setting the length of unit catalyst elements at roughly the same length as that of the approach running section where the distribution of velocities of flow goes steady in subjecting waste gases contg. NOx to a denitration treatment by using honeycomb catalysts. CONSTITUTION:Honeycomb catalysts of dust through type disposed in plural pieces are used as catalysts for denitration for the purpose of reducing and removing harmful NOx from gases cotg. NOx and dust such as industrial waste gases. In this case, the respective catalyst elements having roughly the same length as that of the approach running section where the velocities of flow of the gases in pipes are within a non-steady range. Thereby, the infeasibility of the long- term use of the catalysts on account of clogging of the catalysts with the dust contained in the waste gases and consequent abrupt pressure drop is prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56000934A JPS57113834A (en) | 1981-01-06 | 1981-01-06 | Catalyst structural body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56000934A JPS57113834A (en) | 1981-01-06 | 1981-01-06 | Catalyst structural body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57113834A true JPS57113834A (en) | 1982-07-15 |
JPS6231979B2 JPS6231979B2 (en) | 1987-07-11 |
Family
ID=11487502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56000934A Granted JPS57113834A (en) | 1981-01-06 | 1981-01-06 | Catalyst structural body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57113834A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004060561A1 (en) * | 2002-12-27 | 2004-07-22 | The Chugoku Electric Power Co., Inc. | Honeycomb catalyst, denitration catalyst of denitration device, and exhaust gas denitration device |
EP2444145A1 (en) * | 2010-10-21 | 2012-04-25 | Elex Cemcat AG | Exhaust gas purification stage |
-
1981
- 1981-01-06 JP JP56000934A patent/JPS57113834A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004060561A1 (en) * | 2002-12-27 | 2004-07-22 | The Chugoku Electric Power Co., Inc. | Honeycomb catalyst, denitration catalyst of denitration device, and exhaust gas denitration device |
EP2444145A1 (en) * | 2010-10-21 | 2012-04-25 | Elex Cemcat AG | Exhaust gas purification stage |
Also Published As
Publication number | Publication date |
---|---|
JPS6231979B2 (en) | 1987-07-11 |
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