PL250039B1 - Mixer for selective catalytic reduction of exhaust gases - Google Patents

Mixer for selective catalytic reduction of exhaust gases

Info

Publication number
PL250039B1
PL250039B1 PL444052A PL44405223A PL250039B1 PL 250039 B1 PL250039 B1 PL 250039B1 PL 444052 A PL444052 A PL 444052A PL 44405223 A PL44405223 A PL 44405223A PL 250039 B1 PL250039 B1 PL 250039B1
Authority
PL
Poland
Prior art keywords
exhaust gas
blades
mixer
row
gas flow
Prior art date
Application number
PL444052A
Other languages
Polish (pl)
Other versions
PL444052A1 (en
Inventor
Sebastian Jarosiński
Patryk Biernacki
Original Assignee
Katcon Polska Spółka Z Ograniczoną Odpowiedzialnością
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 Katcon Polska Spółka Z Ograniczoną Odpowiedzialnością filed Critical Katcon Polska Spółka Z Ograniczoną Odpowiedzialnością
Priority to PL444052A priority Critical patent/PL250039B1/en
Publication of PL444052A1 publication Critical patent/PL444052A1/en
Publication of PL250039B1 publication Critical patent/PL250039B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • B01F25/103—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components with additional mixing means other than vortex mixers, e.g. the vortex chamber being positioned in another mixing chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Przedmiotem zgłoszenia jest mieszalnik do selektywnej redukcji katalitycznej gazów spalinowych, którego przekrój podłużny ma kształt litery U, zawierający wlot gazów spalinowych, komorę przepływu gazów spalinowych, wylot gazów spalinowych oraz gniazdo wtryskiwacza, charakteryzujący się tym, że w centralnej części komory przepływu (2) gazów spalinowych, poprzecznie do kierunku przepływu gazów spalinowych, umiejscowiony jest mieszalnik łopatkowy (5), zawierający dwa przeciwległe szeregi łopatek (6), przy czym każda z łopatek (6) jest elementem płytowym usytuowanym równolegle do pionowej osi obudowy (7) mieszalnika. Pierwszy od strony wlotu (1) gazów spalinowych szereg łopatek (6) zawiera łopatki (6), które swobodnymi końcami skierowane są w kierunku obudowy (7) mieszalnika, a drugi szereg łopatek (6) usytuowany od strony wylotu (3) gazów spalinowych z mieszalnika zawiera łopatki (6), które są usytuowane symetrycznie względem osi poprzecznej do kierunku przepływu gazów spalinowych, z zachowaniem odstępu liniowego od osi symetrii, do łopatek (6) pierwszego szeregu. W każdym szeregu układ przestrzenny połowy łopatek (6) go tworzących stanowi odbicie lustrzane, względem osi wzdłużnej obudowy (7) mieszalnika, układu przestrzennego drugiej połowy łopatek (6) stanowiących dany szereg. We wlotowej części komory przepływu (2) gazów spalinowych usytuowana jest płyta kierująca (8).The subject of the application is a mixer for selective catalytic reduction of exhaust gases, the longitudinal cross-section of which is U-shaped, containing an exhaust gas inlet, an exhaust gas flow chamber, an exhaust gas outlet and an injector seat, characterized in that in the central part of the exhaust gas flow chamber (2), transversely to the direction of exhaust gas flow, a blade mixer (5) is located, comprising two opposite rows of blades (6), each blade (6) being a plate element situated parallel to the vertical axis of the mixer housing (7). The first row of blades (6) on the side of the exhaust gas inlet (1) comprises blades (6) whose free ends are directed towards the mixer housing (7), and the second row of blades (6) located on the side of the exhaust gas outlet (3) from the mixer comprises blades (6) arranged symmetrically with respect to the axis transverse to the direction of exhaust gas flow, maintaining a linear distance from the axis of symmetry to the blades (6) of the first row. In each row, the spatial arrangement of half of the blades (6) constituting it is a mirror image, with respect to the longitudinal axis of the mixer housing (7), of the spatial arrangement of the other half of the blades (6) constituting a given row. A guide plate (8) is located in the inlet part of the exhaust gas flow chamber (2).

PL444052A 2023-03-13 2023-03-13 Mixer for selective catalytic reduction of exhaust gases PL250039B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL444052A PL250039B1 (en) 2023-03-13 2023-03-13 Mixer for selective catalytic reduction of exhaust gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL444052A PL250039B1 (en) 2023-03-13 2023-03-13 Mixer for selective catalytic reduction of exhaust gases

Publications (2)

Publication Number Publication Date
PL444052A1 PL444052A1 (en) 2024-09-16
PL250039B1 true PL250039B1 (en) 2026-08-10

Family

ID=92761897

Family Applications (1)

Application Number Title Priority Date Filing Date
PL444052A PL250039B1 (en) 2023-03-13 2023-03-13 Mixer for selective catalytic reduction of exhaust gases

Country Status (1)

Country Link
PL (1) PL250039B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6449947B1 (en) * 2001-10-17 2002-09-17 Fleetguard, Inc. Low pressure injection and turbulent mixing in selective catalytic reduction system
US8375709B2 (en) * 2009-11-17 2013-02-19 Tenneco Automotive Operating Company Inc. Exhaust gas additive/treatment system and mixer for use therein
US20150040537A1 (en) * 2013-08-06 2015-02-12 Tenneco Automotive Operating Company Inc. Perforated Mixing Pipe With Swirler
WO2020049085A1 (en) * 2018-09-06 2020-03-12 Cnh Industrial Italia S.P.A. Improved after treatment system for a vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6449947B1 (en) * 2001-10-17 2002-09-17 Fleetguard, Inc. Low pressure injection and turbulent mixing in selective catalytic reduction system
US8375709B2 (en) * 2009-11-17 2013-02-19 Tenneco Automotive Operating Company Inc. Exhaust gas additive/treatment system and mixer for use therein
US20150040537A1 (en) * 2013-08-06 2015-02-12 Tenneco Automotive Operating Company Inc. Perforated Mixing Pipe With Swirler
WO2020049085A1 (en) * 2018-09-06 2020-03-12 Cnh Industrial Italia S.P.A. Improved after treatment system for a vehicle

Also Published As

Publication number Publication date
PL444052A1 (en) 2024-09-16