JPS6480431A - Method for reduction of nitrogen oxides - Google Patents

Method for reduction of nitrogen oxides

Info

Publication number
JPS6480431A
JPS6480431A JP63207462A JP20746288A JPS6480431A JP S6480431 A JPS6480431 A JP S6480431A JP 63207462 A JP63207462 A JP 63207462A JP 20746288 A JP20746288 A JP 20746288A JP S6480431 A JPS6480431 A JP S6480431A
Authority
JP
Japan
Prior art keywords
waste gases
nitrogen oxides
catalyst
volume
distributed over
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
JP63207462A
Other languages
Japanese (ja)
Other versions
JPH0236288B2 (en
Inventor
Montei Buroon Sutanrei
Maachin Uorutaaman Jierarudo
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.)
BASF Catalysts LLC
Original Assignee
Engelhard 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
Priority claimed from US05/891,503 external-priority patent/US4157375A/en
Application filed by Engelhard Corp filed Critical Engelhard Corp
Publication of JPS6480431A publication Critical patent/JPS6480431A/en
Publication of JPH0236288B2 publication Critical patent/JPH0236288B2/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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/061—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing metallic elements added to the zeolite
    • 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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/50—Zeolites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

PURPOSE: To efficiently reduce nitrogen oxides by bringing a specific catalyst distributed over the entire part of a single substance in the intrinsically monolithic alumina silica porous residue of anhydrous calcined clay having diffusion channels into contact with waste gases. CONSTITUTION: The catalyst distributed over entire part of the single body in the monolithic alumina silica porous residue having the diffusion channels, which consists essentially of the microcrystals formed by treating the single substance of the calcined kaolin with a base soln., forming a synthesize zeolite- like molecular sieve therein and etching the surface thereof, and are etched from the synthesize zeolite-like molecular sieve to the sieve, is formed. A gaseous reducing agent is mixed with the waste gases and the waste gases are brought into contact with the catalyst described above at a space velocity of 3,000 to 6,000 volume of the gas per hour per the volume of the catalyst and at 200 to 700 deg.C., by which the nitrogen oxides in the waste gases are reduced.
JP63207462A 1978-03-30 1988-08-23 Method for reduction of nitrogen oxides Granted JPS6480431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/891,503 US4157375A (en) 1977-12-02 1978-03-30 Conversion of nitrogen oxides

Publications (2)

Publication Number Publication Date
JPS6480431A true JPS6480431A (en) 1989-03-27
JPH0236288B2 JPH0236288B2 (en) 1990-08-16

Family

ID=25398303

Family Applications (2)

Application Number Title Priority Date Filing Date
JP3633979A Granted JPS54133489A (en) 1978-03-30 1979-03-29 Honeycomb structure treated to zeolite and its manufacture
JP63207462A Granted JPS6480431A (en) 1978-03-30 1988-08-23 Method for reduction of nitrogen oxides

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP3633979A Granted JPS54133489A (en) 1978-03-30 1979-03-29 Honeycomb structure treated to zeolite and its manufacture

Country Status (4)

Country Link
JP (2) JPS54133489A (en)
CA (1) CA1110829A (en)
DE (1) DE2912269A1 (en)
GB (1) GB2017520A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58202042A (en) * 1982-05-20 1983-11-25 Toray Ind Inc Zeolite-containing honeycomb structure
JPS59230642A (en) * 1983-06-15 1984-12-25 Toyo Soda Mfg Co Ltd Selective reducing and denitrating catalyst and denitration method of gas using the same
DE3328653A1 (en) * 1983-08-09 1985-02-28 Steuler Industriewerke GmbH, 5410 Höhr-Grenzhausen DEVICE FOR CARRYING OUT A METHOD FOR SEPARATING STICKOXYDES FROM EXHAUST GASES
EP0205813A3 (en) * 1985-04-22 1988-09-21 Klaus Rennebeck Catalyst, especially for cleaning exhaust gas, process and apparatus for its manufacture
DE3674313D1 (en) * 1985-08-08 1990-10-25 Mobil Oil Corp REDUCTION OF NITROGEN OXIDS IN EXHAUST GAS.
US4778665A (en) * 1986-09-09 1988-10-18 Mobil Oil Corporation Abatement of NOx in exhaust gases
DE3635284A1 (en) * 1986-10-16 1988-04-28 Steuler Industriewerke Gmbh CATALYST FOR REMOVING NITROGEN OXIDS FROM EXHAUST GAS
JPH0339655Y2 (en) * 1987-03-16 1991-08-21
DE3738916A1 (en) * 1987-11-17 1989-05-24 Ibs Engineering & Consulting I Large-sized or small-sized molecular sieve shaped body and process for the production thereof
US5125231A (en) * 1990-06-08 1992-06-30 Corning Incorporated Dual converter engine exhaust system for reducing hydrocarbon emissions
US6089014A (en) * 1990-06-08 2000-07-18 Corning Incorporated Engine exhaust system with reduced hydrocarbon emissions
US5207734A (en) * 1991-07-22 1993-05-04 Corning Incorporated Engine exhaust system for reduction of hydrocarbon emissions
US5565394A (en) * 1994-10-11 1996-10-15 Corning Incorporated Low expansion molecular sieves and method of making same
JP2010001205A (en) * 2008-05-20 2010-01-07 Ibiden Co Ltd Honeycomb structure
DE102014205760A1 (en) 2014-03-27 2015-10-01 Johnson Matthey Public Limited Company Process for producing a catalyst and catalyst
CN111957294A (en) * 2020-08-11 2020-11-20 江西宝安新材料科技有限公司 Baking-free manufacturing method of honeycomb type molecular sieve
CN114887649A (en) * 2022-07-14 2022-08-12 中国汽车技术研究中心有限公司 Coating-free integral type exhaust gas purification catalyst and preparation method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119660A (en) * 1960-09-26 1964-01-28 Union Carbide Corp Process for producing molecular sieve bodies
US3391994A (en) * 1964-12-08 1968-07-09 Engelhard Min & Chem Method for producing faujasitetype zeolites
JPS548351B2 (en) * 1973-09-27 1979-04-14
JPS5191868A (en) * 1975-01-27 1976-08-12
JPS593218B2 (en) * 1975-09-25 1984-01-23 トウアネンリヨウコウギヨウ カブシキガイシヤ Datsushi Yokubai

Also Published As

Publication number Publication date
GB2017520A (en) 1979-10-10
JPH0236288B2 (en) 1990-08-16
JPS6231984B2 (en) 1987-07-11
JPS54133489A (en) 1979-10-17
CA1110829A (en) 1981-10-20
DE2912269A1 (en) 1979-10-11
DE2912269C2 (en) 1990-02-08

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