WO1986000544A1 - CATALYST-NOx-SEPARATION IN THE FIELD OF BOILERS - Google Patents

CATALYST-NOx-SEPARATION IN THE FIELD OF BOILERS Download PDF

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Publication number
WO1986000544A1
WO1986000544A1 PCT/EP1985/000342 EP8500342W WO8600544A1 WO 1986000544 A1 WO1986000544 A1 WO 1986000544A1 EP 8500342 W EP8500342 W EP 8500342W WO 8600544 A1 WO8600544 A1 WO 8600544A1
Authority
WO
WIPO (PCT)
Prior art keywords
separation
catalyst
nox
boilers
field
Prior art date
Application number
PCT/EP1985/000342
Other languages
German (de)
French (fr)
Inventor
Heinz HÖLTER
Heinrich IGELBÜSCHER
Heinrich Gresch
Heribert Dewert
Original Assignee
Hoelter Heinz
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 Hoelter Heinz filed Critical Hoelter Heinz
Publication of WO1986000544A1 publication Critical patent/WO1986000544A1/en

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Classifications

    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device

Definitions

  • NO x must be deposited in the exhaust gas down to less than 200 mg / m 3 .
  • catalyst arrangements should preferably consist of coiled flat steel profiles which have the corresponding active surfaces.
  • the invention is not limited to the embodiments shown and described in detail above, but numerous modifications are possible without deviating from the basic idea of providing smoke pipes with internal profiles on which catalyst masses are applied in order to reduce the NO x .
  • This helical catalytic converter arrangement can be arranged to be movable in order to simultaneously clean the flue pipes.
  • the attached sketch shows: with (1) a boiler; with (2) the flue pipes; with (3) those in the flue pipes

Abstract

A legal provision prescribes the separation of NOx? in the flow gases of boilers to quantities smaller than 200mg/m?3. To this effect, a known solution is to make flue gases pass through catalysts. In order to facilitate such a NOx? separation, the present invention proposes to provide the inside of smoke pipes (2) of the boiler (1) with catalysis surfaces (3). Said surfaces may be helically arranged in the smoke pipes (2) while being moveable inside the latter.

Description

"Katalysator - NOx-Abscheidung im Kesselhereich "."Catalyst - NO x separation in the boiler area".
Es ist bekannt, daß lt. neuer Gesetzgebung NOx bis auf kleiner 200 mg/m3 im Abgas abgeschieden werden muß.It is known that, according to new legislation, NO x must be deposited in the exhaust gas down to less than 200 mg / m 3 .
Der Einsatz von Katalysatoren wird erforderlich.The use of catalysts is required.
Um in einfachster Art einen Kessel so auszubilden, daß er gleichzeitig mit seinen vorhandenen Ausrüstungen NOx reduziert, wird erfindungsgemäß vorgeschlagen, die innen durchströmten Rauchrohre (Wärmetauscherrohre) mitIn order to design a boiler in the simplest way so that it simultaneously reduces NO x with its existing equipment, it is proposed according to the invention that the smoke tubes (heat exchanger tubes) through which the interior flows are included
Katalysatorträgern auszurüsten.Equip catalyst carriers.
Diese Katalysatoranordnungen sollten vorzugsweise aus gewendelten Flachstahlprofilen bestehen, die die entsprechenden aktiven Oberflächen aufweisen. Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen dargestellten und beschriebenen Ausbildungsformen beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, Rauchrohre mit Innenprofilierungen zu versehen, auf denen Katalysatormassen aufgebracht sind, um das NOx zu reduzieren.These catalyst arrangements should preferably consist of coiled flat steel profiles which have the corresponding active surfaces. Of course, the invention is not limited to the embodiments shown and described in detail above, but numerous modifications are possible without deviating from the basic idea of providing smoke pipes with internal profiles on which catalyst masses are applied in order to reduce the NO x .
Bevorzugt wird eine gewendelte Ausführung, dieA spiral version is preferred, the
1. eine Turbulenz erzeugt, damit ein verbesserter Wärmeübergang erzielt wird und1. creates turbulence so that an improved heat transfer is achieved and
2. die Kontaktfläche gegenüber einer geraden Ausführung vergrößert.2. the contact area increases compared to a straight version.
Diese wendelartige Katalysatoranordnung kann beweglich angeordnet sein, um gleichzeitig die Rauchrohre zu reinigen.This helical catalytic converter arrangement can be arranged to be movable in order to simultaneously clean the flue pipes.
In der beiliegenden Skizze ist dargestellt: mit (1) ein Kessel; mit (2) die Rauchrohre; mit (3) die in den Rauchrohren befindlichenThe attached sketch shows: with (1) a boiler; with (2) the flue pipes; with (3) those in the flue pipes
Katalysatorflächen. Catalyst areas.

Claims

Patentansprüche:Claims:
Anspruch 1 NOx-armer Kessel, dadurch gekennzeichnet, daß erClaim 1 NO x low boiler, characterized in that it
Rauchrohre aufweist, in deren Innenraum Katalysatorflächen angeordnet sind.Has flue pipes, in the interior of which catalyst surfaces are arranged.
Anspruch 2Claim 2
Vorrichtung und Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß die Katalysatoranordnung vorzugsweise in gewendelter Ausführung besteht.Device and method according to claim 1, characterized in that the catalyst arrangement preferably consists of a helical design.
Anspruch 3 NOx-armer Kessel nach Anspruch 1 - 2 dadurch gekennzeichnet, daß die Katalysatoranordnung in den Rauchrohren beweglich ist, zur gleichzeitigen Rohrreinigung. Claim 3 NO x low boiler according to claim 1-2, characterized in that the catalyst arrangement is movable in the flue pipes for simultaneous pipe cleaning.
PCT/EP1985/000342 1984-07-17 1985-07-12 CATALYST-NOx-SEPARATION IN THE FIELD OF BOILERS WO1986000544A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3426245.8 1984-07-17
DE19843426245 DE3426245A1 (en) 1984-07-17 1984-07-17 CATALYST - NO (DOWN ARROW) X (DOWN ARROW) DEPOSIT IN THE BOILER AREA

Publications (1)

Publication Number Publication Date
WO1986000544A1 true WO1986000544A1 (en) 1986-01-30

Family

ID=6240807

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1985/000342 WO1986000544A1 (en) 1984-07-17 1985-07-12 CATALYST-NOx-SEPARATION IN THE FIELD OF BOILERS

Country Status (4)

Country Link
EP (1) EP0188481A1 (en)
JP (1) JPS61502699A (en)
DE (1) DE3426245A1 (en)
WO (1) WO1986000544A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561225A (en) * 1990-09-19 1996-10-01 Southern Research Institute Polynucleotide analogs containing sulfonate and sulfonamide internucleoside linkages

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966443A (en) * 1973-04-18 1976-06-29 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
CH617997A5 (en) * 1977-12-16 1980-06-30 Vuissoz De Preux Constant
DE3003519A1 (en) * 1979-02-02 1980-08-07 Johnson Matthey Co Ltd TRAINED HEAT WATER HEATER

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5315639A (en) * 1976-07-27 1978-02-13 Hitachi Zosen Corp Boiler has denitration device built-in
JPS6014971B2 (en) * 1977-11-26 1985-04-17 石川島播磨重工業株式会社 How to remove nitrogen oxides
JPS6017217Y2 (en) * 1980-05-19 1985-05-27 三菱重工業株式会社 Solid-gas contact reactor
US4415537A (en) * 1982-02-01 1983-11-15 United Technologies Corporation Catalytic combustor
DE3325712A1 (en) * 1983-07-16 1985-01-31 Stettner & Co, 8560 Lauf Catalytic converter for the after burning of flue gases
DE3412499A1 (en) * 1984-04-03 1985-10-10 Balduin Dr. 8035 Gauting Pauli Smoke-tube formation, in particular for a fire-tube/smoke-tube boiler, and a process for separating nitrogen oxides out of its smoke gases
JPH05315639A (en) * 1991-02-15 1993-11-26 Fujimoto Denki Kk Photoelectric semiconductor device and manufacture thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966443A (en) * 1973-04-18 1976-06-29 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
CH617997A5 (en) * 1977-12-16 1980-06-30 Vuissoz De Preux Constant
DE3003519A1 (en) * 1979-02-02 1980-08-07 Johnson Matthey Co Ltd TRAINED HEAT WATER HEATER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561225A (en) * 1990-09-19 1996-10-01 Southern Research Institute Polynucleotide analogs containing sulfonate and sulfonamide internucleoside linkages

Also Published As

Publication number Publication date
EP0188481A1 (en) 1986-07-30
JPS61502699A (en) 1986-11-20
DE3426245A1 (en) 1986-01-30

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