JPS57113834A - Catalyst structural body - Google Patents

Catalyst structural body

Info

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
Application number
JP56000934A
Other languages
Japanese (ja)
Other versions
JPS6231979B2 (en
Inventor
Yoshitaka Shimabara
Hiroyuki Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP56000934A priority Critical patent/JPS57113834A/en
Publication of JPS57113834A publication Critical patent/JPS57113834A/en
Publication of JPS6231979B2 publication Critical patent/JPS6231979B2/ja
Granted legal-status Critical Current

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
    • B01J8/008—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.
JP56000934A 1981-01-06 1981-01-06 Catalyst structural body Granted JPS57113834A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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