PL444055A1 - Mixer for selective catalytic reduction systems of exhaust gases - Google Patents

Mixer for selective catalytic reduction systems of exhaust gases

Info

Publication number
PL444055A1
PL444055A1 PL444055A PL44405523A PL444055A1 PL 444055 A1 PL444055 A1 PL 444055A1 PL 444055 A PL444055 A PL 444055A PL 44405523 A PL44405523 A PL 44405523A PL 444055 A1 PL444055 A1 PL 444055A1
Authority
PL
Poland
Prior art keywords
exhaust gas
flow pipe
mixer
catalytic reduction
selective catalytic
Prior art date
Application number
PL444055A
Other languages
Polish (pl)
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 PL444055A priority Critical patent/PL444055A1/en
Publication of PL444055A1 publication Critical patent/PL444055A1/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 układów selektywnej redukcji katalitycznej gazów spalinowych zawierający wlot gazów spalinowych, komorę przepływu gazów spalinowych, wylot gazów spalinowych oraz gniazdo wtryskiwacza, charakteryzuje się tym, że w komorze (8) przepływu gazów spalinowych, prostopadle do wlotu (2) gazów spalinowych umieszczona jest rura przepływu wewnętrznego (5), która w części górnej zawiera co najmniej jeden otwór z kształtowym przetłoczeniem (10), a w części dolnej na zewnętrznej stronie zawiera co najmniej cztery łopatki (7) o spiralnym kształcie. Rura przepływu wewnętrznego (5) zamocowana jest w rurze przepływu zewnętrznego (6), która w dolnej części posiada otwory (11), a po stronie wylotu (3) gazów spalinowych rura przepływu zewnętrznego (6) połączona jest z płytą stożkową (9), która zamocowana jest prostopadle względem rury przepływu wewnętrznego (6), a wierzchołek stożka płyty stożkowej (9) skierowany jest do wewnątrz rury przepływu wewnętrznego (5).The subject of the application is a mixer for selective catalytic reduction systems for exhaust gases comprising an exhaust gas inlet, an exhaust gas flow chamber, an exhaust gas outlet and an injector seat, characterised in that an internal flow pipe (5) is placed in the exhaust gas flow chamber (8) perpendicularly to the exhaust gas inlet (2), which in its upper part comprises at least one opening with a shaped embossment (10), and in its lower part on the outer side comprises at least four spiral-shaped blades (7). The internal flow pipe (5) is mounted in an external flow pipe (6), which in its lower part has openings (11), and on the exhaust gas outlet side (3), the external flow pipe (6) is connected to a conical plate (9), which is mounted perpendicularly to the internal flow pipe (6), and the top of the cone of the conical plate (9) is directed inside the internal flow pipe (5).

PL444055A 2023-03-13 2023-03-13 Mixer for selective catalytic reduction systems of exhaust gases PL444055A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL444055A PL444055A1 (en) 2023-03-13 2023-03-13 Mixer for selective catalytic reduction systems of exhaust gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL444055A PL444055A1 (en) 2023-03-13 2023-03-13 Mixer for selective catalytic reduction systems of exhaust gases

Publications (1)

Publication Number Publication Date
PL444055A1 true PL444055A1 (en) 2024-09-16

Family

ID=92761899

Family Applications (1)

Application Number Title Priority Date Filing Date
PL444055A PL444055A1 (en) 2023-03-13 2023-03-13 Mixer for selective catalytic reduction systems of exhaust gases

Country Status (1)

Country Link
PL (1) PL444055A1 (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

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