DE3442929A1 - Form of catalyst - Google Patents

Form of catalyst

Info

Publication number
DE3442929A1
DE3442929A1 DE19843442929 DE3442929A DE3442929A1 DE 3442929 A1 DE3442929 A1 DE 3442929A1 DE 19843442929 DE19843442929 DE 19843442929 DE 3442929 A DE3442929 A DE 3442929A DE 3442929 A1 DE3442929 A1 DE 3442929A1
Authority
DE
Germany
Prior art keywords
catalyst
area
longitudinal
channels
flows
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.)
Withdrawn
Application number
DE19843442929
Other languages
German (de)
Inventor
Heribert Dipl.-Ing. 4390 Gladbeck Dewert
Heinrich Ing.(grad.) 4600 Dortmund Gresch
Heinz Dipl.-Ing. Hölter
Heinrich Dipl.-Ing. 4390 Gladbeck Igelbüscher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19843442929 priority Critical patent/DE3442929A1/en
Priority to DE19843444439 priority patent/DE3444439A1/en
Priority to DE19853501177 priority patent/DE3501177A1/en
Publication of DE3442929A1 publication Critical patent/DE3442929A1/en
Withdrawn legal-status Critical Current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
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0278—Feeding reactive fluids
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • 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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths

Landscapes

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

Abstract

Patent Application P 3416875.3 describes a catalyst composition for preparing catalysts, which comprises wash tailings and/or flotation tailings from underground bituminous coal mining and/or ore mining. In order to obtain the conditions of the greatest possible catalyst contact surface in catalysts of this type and in order to clean the contact surfaces by turbulent flows rather than by constant flows, it is proposed according to the invention that the catalyst is arranged in a housing (1), has a flow all around it and, in the flow direction, has both longitudinal (7) and transverse channels (8). The longitudinal channels (7) are preferably of conical shape and increase in size from the inflow side (4) having the area (11) to the outflow side (10) having the area (12), i.e. they diverge in a diffuser-like manner. <IMAGE>

Description

2'Katalysatorform"2 'catalyst form "

In der Patentanmeldung P 34 16 875.3 wird eine Katalysatormasse zur Herstellung von Katalysatoren beschrieben, die aus Waschbergen undoder Flotationsbergen aus dem Untertage-Bereich des Steinkohlenbergbaus und/oder Erzbergbaus besteht.In the patent application P 34 16 875.3 a catalyst mass is used for Manufacture of catalysts described from wash mountains and or flotation mountains consists of the underground area of coal mining and / or ore mining.

Es ist bekannt, Katalysatormassen zur Entfernung von Stickoxiden aus Abgasen zu verwenden.It is known to use catalyst compositions to remove nitrogen oxides Use exhaust gases.

Diese Katalysatormassen zeigen verschiedene Formen, Strukturen, die geschüttet werden, Strukturen, die gefüllt werden oder, wie durch die Patentschrift 2,6 58 539 bekannt, Honigwabenstrukturen mit einer Vielzahl von parallelen Kanälen, wobei die Honigwaben bzw. zellenförmigen, parallelen Kanäle einen Durchmesser von 2,0 mm bis 30 mm haben, und die offene Frontalfläche 50 bis 80 % beträgt, wobei dann die Gasgeschwindigkeiten 0,5 bis 60 m/sec betragen sollen.These catalyst masses show different shapes, structures, the be poured, structures that are filled or, as by the patent 2.6 58 539 known honeycomb structures with a multitude of parallel channels, being the honeycomb or cell-shaped, parallel channels Have a diameter of 2.0 mm to 30 mm, and the open frontal area 50 to 80% is, in which case the gas velocities should be 0.5 to 60 m / sec.

Es ist bekannt, daß eine gute Denitrierung erhalten wird, wenn eine relativ hohe Gasgeschwindigkeit bei gleichen Raumgeschwindigkeiten, d . h. m3 Gas zu m3 Katalysator vorhanden ist.It is known that good denitration is obtained when a relatively high gas velocity at the same space velocities, i. H. m3 of gas to m3 of catalyst is available.

Es ist weiterhin bekannt, daß Katalysatorkanäle, insbesondere hinter Ölkesseln, sehr leicht durch Ruß zugeschliert werden.It is also known that catalyst channels, especially behind Oil boilers can easily be streaked with soot.

Um die Bedingungen einer größtmöglichen Katalysatorberührungsoberfläche zu erhalten und die Kontaktflächen nicht durch gleichbleibende Strömungen, sondern durch verwirbelte Strömungen zu reinigen, wird erfindungsgemäß vorgeschlagen, Katalysatorformen zu verwenden, die nicht durch parallele Kanäle gekennzeichnet sind, sondern wo die Gasströme allseitig, zumindest dreiseitig in die Katalysatorflächen einströmen.The conditions for the largest possible catalyst contact surface to maintain and the contact surfaces not by constant currents, but According to the invention, catalyst forms are proposed to be cleaned by swirling currents to which are not characterized by parallel channels, but where the Gas flows flow into the catalyst surfaces on all sides, at least on three sides.

In der beiliegenden Zeichnung ist dargestellt: mit (1) ein Rohr von z.B. 300 mm Durchmesser, ca. 1 in lang; mit (2) ein Katalysatorkörper mit einem Durchmesser oder einer Kantenlänge von z.B. 250 mm, wobei am Ende des Rohres die offenen Flächen vom Rohrkörper (1) zum Katalysatorkörper (2) mit Dichtflächen (3) versehen sind. Der Katalysator (2) ist von der Anströmseite ()4) und von der Kopfseite (5) sowie von der Fußseite (6) von Gas umströmt.The accompanying drawing shows: with (1) a tube of e.g. 300 mm diameter, approx. 1 inch long; with (2) a catalyst body with a Diameter or an edge length of e.g. 250 mm, with the open areas from the pipe body (1) to the catalyst body (2) with sealing surfaces (3) are provided. The catalyst (2) is from the upstream side () 4) and from the top side (5) as well as from the foot side (6) of gas flows around it.

Der Katalysator ist mit Längsöffnungen (7) und kopfseitig sowie fußseitig mit Öffnungen (8), die von oben nach unten, d.h. von (8) nach (9) durchgehen, versehen.The catalytic converter has longitudinal openings (7) and is at the top and bottom with openings (8), which go through from top to bottom, i.e. from (8) to (9).

Das Gas strömt somit erfindungsgemäß von der Anströmseite (4) in Richtung Ausströmseite (10).According to the invention, the gas thus flows from the upstream side (4) in the direction Outflow side (10).

Das Gas strömt aber auch gleichzeitig quer zur Anströmseite über die Kopfseite (5) und die Fußseite (6) in den Katalysator (2) ein und bewirkt hier ein regelrechtes Verwirbeln in den Katalysatorinnenflächen.However, the gas also flows across the upstream side at the same time The head side (5) and the foot side (6) enter the catalytic converter (2) and cause a real swirling in the inner surfaces of the catalytic converter.

Hierdurch wird eine innige Kontaktierung und eine innige Reinigung erzielt.This results in an intimate contact and an intimate cleaning achieved.

Weiterhin wird erfindungsgemäß vorgeschlagen, daß die Längskanäle von der Anströmseite (4) zur Ausströmseite (10) sich konisch erweitern, so daß der Druckverlust der zugeführten Gasmassen über Kopfseite, Fußseite und Anströmseite zur Austrittsfläche (10) nicht zunimmt, sondern etwa gleichbleibende Geschwindigkeiten beibehalten werden.Furthermore, it is proposed according to the invention that the longitudinal channels from the inflow side (4) to the outflow side (10) widen conically, so that the Pressure loss of the supplied gas masses over the top, bottom and inflow side to the exit surface (10) does not increase, but approximately constant speeds to be kept.

Ein solcher konischer Kanal ist gestrichelt im Katalysatorkörper (2) dargestellt.Such a conical channel is shown in dashed lines in the catalyst body (2) shown.

Mit (11) ist die Anströmfläche des konischen Kanals dargestellt und mit (12) dievergrößerte Austrittsfläche.With (11) the inflow surface of the conical channel is shown and with (12) the enlarged exit area.

Selbstverständlich ist die Erfindung nicht auf die vorstehend beschriebene und dargestellte Ausbildungs form beschränkt, sondern es sind Anderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, einen Katalysator zu verwenden, der allseitig umströmt wird, und im Katalysator selbst turbulente Strömungen erzeugt werden, wobei vorzugsweise die in Ströinungs richtung längsangeordneten Kanäle im Katalysator konisch ausgebildet sind.Of course, the invention is not limited to that described above and the form of training shown is limited, but changes are possible, without, however, departing from the basic idea of using a catalyst which is flowed around on all sides, and turbulent flows are generated in the catalytic converter itself are, preferably in the flow direction longitudinally arranged channels in the Catalyst are conical.

Zusatz-Patentansprüche:Additional claims:

Claims (1)

PATENTANSPRÜCHE: Anspruch 1 Katalysator, dadurch gekennzeichnet, daß er in einem Gehäuse (1) angeordnet allseitig umströmt wird und in Strömungsrichtung Längs-(7) sowie Querkanäle (8) aufweist.PATENT CLAIMS: Claim 1 catalyst, characterized in that it is arranged in a housing (1) is flowed around on all sides and in the direction of flow Has longitudinal (7) and transverse channels (8). Anspruch 2 Katalysator nach Anspruch 1, dadurch gekennzeichnet, daß die Längskanäle (7) vorzugsweise konisch ausgebildet sind und von der Anströmseite (4) mit der Fläche (11) sich zur Ausströmseite (10) mit der Fläche (12) vergrößern, d.h. diffusorartig auseinandergehen.Claim 2 catalyst according to claim 1, characterized in that the longitudinal channels (7) are preferably designed conically and from the upstream side (4) with the area (11) increases towards the outflow side (10) with the area (12), i.e. diverge like a diffuser.
DE19843442929 1984-11-24 1984-11-24 Form of catalyst Withdrawn DE3442929A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19843442929 DE3442929A1 (en) 1984-11-24 1984-11-24 Form of catalyst
DE19843444439 DE3444439A1 (en) 1984-11-24 1984-12-06 Large-scale catalysts
DE19853501177 DE3501177A1 (en) 1984-11-24 1985-01-16 Catalyst forms with bevelled inflow side

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843442929 DE3442929A1 (en) 1984-11-24 1984-11-24 Form of catalyst

Publications (1)

Publication Number Publication Date
DE3442929A1 true DE3442929A1 (en) 1986-05-28

Family

ID=6251083

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843442929 Withdrawn DE3442929A1 (en) 1984-11-24 1984-11-24 Form of catalyst

Country Status (1)

Country Link
DE (1) DE3442929A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444439A1 (en) * 1984-11-24 1986-06-26 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Large-scale catalysts
US20140116521A1 (en) * 2012-10-28 2014-05-01 SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project as such owners exist now and Subaqueous mining tailings placement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1452145A (en) * 1922-03-14 1923-04-17 Cederberg Ivar Walfrid Apparatus and method for carrying out catalytic oxidation of ammonia with oxygen
US2459907A (en) * 1942-09-04 1949-01-25 Nat Carbon Co Inc Method of conducting chemical reactions
DE2942359A1 (en) * 1978-10-19 1980-06-26 Daikin Ind Ltd Oxidising device for gas contg. organic substances - comprises heat exchanger with honeycomb structure
DE3037165C2 (en) * 1979-10-05 1983-11-03 UOP Inc., 60016 Des Plaines, Ill. Catalytic device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1452145A (en) * 1922-03-14 1923-04-17 Cederberg Ivar Walfrid Apparatus and method for carrying out catalytic oxidation of ammonia with oxygen
US2459907A (en) * 1942-09-04 1949-01-25 Nat Carbon Co Inc Method of conducting chemical reactions
DE2942359A1 (en) * 1978-10-19 1980-06-26 Daikin Ind Ltd Oxidising device for gas contg. organic substances - comprises heat exchanger with honeycomb structure
DE3037165C2 (en) * 1979-10-05 1983-11-03 UOP Inc., 60016 Des Plaines, Ill. Catalytic device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444439A1 (en) * 1984-11-24 1986-06-26 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Large-scale catalysts
US20140116521A1 (en) * 2012-10-28 2014-05-01 SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project as such owners exist now and Subaqueous mining tailings placement
US9068697B2 (en) * 2012-10-28 2015-06-30 Syncrude Cananda Ltd. Subaqueous mining tailings placement

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