DE2555220C2 - - Google Patents

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Publication number
DE2555220C2
DE2555220C2 DE2555220A DE2555220A DE2555220C2 DE 2555220 C2 DE2555220 C2 DE 2555220C2 DE 2555220 A DE2555220 A DE 2555220A DE 2555220 A DE2555220 A DE 2555220A DE 2555220 C2 DE2555220 C2 DE 2555220C2
Authority
DE
Germany
Prior art keywords
dust
oxidation
liquid
alkaline earth
masses
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.)
Expired
Application number
DE2555220A
Other languages
German (de)
Other versions
DE2555220A1 (en
Inventor
Heinz 4390 Gladbeck De Hoelter
Heinz 4600 Dortmund De Gresch
Heinrich 4390 Gladbeck De Igelbuescher
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
Priority claimed from DE19752520045 external-priority patent/DE2520045A1/en
Application filed by Individual filed Critical Individual
Priority to DE19752555220 priority Critical patent/DE2555220A1/en
Priority to AT0305376A priority patent/AT363918B/en
Priority to BR2662/76A priority patent/BR7602662A/en
Priority to SE7605102A priority patent/SE422890B/en
Priority to IT22934/76A priority patent/IT1059765B/en
Priority to US05/683,205 priority patent/US4061476A/en
Priority to GB18345/76A priority patent/GB1551356A/en
Priority to CH564676A priority patent/CH612593A5/xx
Priority to DK200276A priority patent/DK200276A/en
Priority to NL7604793A priority patent/NL7604793A/en
Priority to FR7613443A priority patent/FR2310151A1/en
Priority to GB4295478A priority patent/GB1551357A/en
Priority to BE2055003A priority patent/BE841447A/en
Priority to CA251,860A priority patent/CA1059927A/en
Priority to AU13672/76A priority patent/AU503617B2/en
Priority to ES447653A priority patent/ES447653A1/en
Priority to JP51051632A priority patent/JPS608854B2/en
Priority to MX76100284U priority patent/MX3628E/en
Publication of DE2555220A1 publication Critical patent/DE2555220A1/en
Priority to US05/844,185 priority patent/US4201751A/en
Priority to GB4387177A priority patent/GB1594855A/en
Priority to US05/869,147 priority patent/US4206186A/en
Publication of DE2555220C2 publication Critical patent/DE2555220C2/de
Application granted granted Critical
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/60Simultaneously removing sulfur oxides and nitrogen oxides
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00Pretreatment
    • F23G2201/30Pyrolysing
    • F23G2201/301Treating pyrogases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00Pretreatment
    • F23G2201/30Pyrolysing
    • F23G2201/303Burning pyrogases
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruchs.The invention relates to a method according to the preamble of the claim.

Ein solches Verfahren ist aus der DE-OS 23 31 156 bekannt.Such a method is known from DE-OS 23 31 156.

Zudem ist es bekannt, daß Absorptionsmassen, wie z. B. Erdalkalistäube, zur Absorption von SO₂, H₂S, HCl, HF und ähnlichen Rauchgasbegleitern geeignet sind. Jedoch die Absorption von NO x ist nicht genügend gewährleistet.In addition, it is known that absorption masses, such as. B. alkaline earth dust, are suitable for the absorption of SO₂, H₂S, HCl, HF and similar flue gas companions. However, the absorption of NO x is not sufficiently guaranteed.

In dem aus der DE-OS 23 04 784 bekannten sogenannten Naßverfahren ist zwar schon vorgeschlagen worden, H₂O₂ in Form einer sehr verdünnten, kalten wäßrigen Lösung in den mit Wasser gesättigten zu reinigenden Gasstrom einzuführen, jedoch müssen hierbei die Gase vorher von Staub und Ruß befreit und bei der chemischen Naßreinigung möglichst niedrige Temperaturen eingehalten werden.In the known from DE-OS 23 04 784 So-called wet processes have already been proposed been H₂O₂ in the form of a very dilute, cold aqueous solution in the saturated with water to introduce cleaning gas flow, however this removes dust and soot from the gases beforehand and if possible with chemical wet cleaning low temperatures are observed.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art anzugeben, bei dem ohne Vorreinigung zur Staub- und Rußbeseitigung und ohne Temperaturbegrenzung die NO x -Bestandteile wirksam entfernt werden können.The invention has for its object to provide a method of the type mentioned, in which the NO x components can be effectively removed without pre-cleaning for dust and soot removal and without temperature limitation.

Zur Lösung der Aufgabe wird vorgeschlagen, daß die Flüssigkeit aus Wasserstoffperoxid zur Aufoxidation von NO x besteht. Die überschüssige Feuchte der Oxidationsflüssigkeit wird von den nach der ersten Oxidationsstufe eingeblasenen trockenen Absorptionsmassen aufgenommen, so daß in dem nachgeschalteten Staubabscheider, z. B. Filtertuchabscheider, keine Inkrustationen auftreten.To achieve the object, it is proposed that the liquid consist of hydrogen peroxide for the oxidation of NO x . The excess moisture of the oxidation liquid is absorbed by the dry absorption masses blown in after the first oxidation stage, so that in the downstream dust separator, e.g. B. filter cloth separator, no incrustations occur.

In der Zeichnung ist die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens dargestellt. Es werden bezeichnet
mit 1:die flüssige Oxidationsmasse, z. B. H₂O₂, mit 2:der Vorratsbehälter für die Trockenabsorptionsmasse, z. B. Erdalkalistaub, mit 3:die Einsprühdüse für die Naßoxidation, mit 4:die Düsen zum Einblasen der trockenen Absorptionsmasse, mit 5:ein Staubfilter, mit 6:ein unterdruckerzeugender Ventilator, mit 7:die Abgabe der gewandelten Massen, z. B. CaSO₄.
The drawing shows the device for carrying out the method according to the invention. They are labeled
with 1 : the liquid oxidation mass, e.g. B. H₂O₂, with 2 : the reservoir for the dry absorption mass, for. B. alkaline earth dust, with 3 : the spray nozzle for wet oxidation, with 4 : the nozzles for blowing in the dry absorption mass, with 5 : a dust filter, with 6 : a vacuum-generating fan, with 7 : the delivery of the converted masses, e.g. B. CaSO₄.

Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen beschriebenen und dargestellten Ausbildungsformen beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, das Entfernen von SO₂, H₂S, HCl, HF und NO x so durchzuführen, daß an einer 1. Kontaktstelle das Rauchgas mit H₂O₂ beaufschlagt wird, und danach trockene Absorptionsstellen oder Strecken eingerichtet sind, die vorzugsweise Erdalkalistäube als Absorptionsmittel zugegeben in der Form, daß die Trockenabsorption für SO₂, H₂S, HCl usw. garantiert wird und gleichzeitig die überschüssige Feuchte oder Tropfenbildung aus dem vorher eingesprühten Oxidationsmittel mit aufgenommen wird.Of course, the invention is not limited to the training forms described and illustrated in detail above, but numerous modifications are possible without, however, deviating from the basic idea of removing SO₂, H₂S, HCl, HF and NO x in such a way that a 1st Contact point the flue gas is charged with H₂O₂, and then dry absorption points or lines are set up, which are preferably added alkaline earth dust as an absorbent in the form that dry absorption for SO₂, H₂S, HCl etc. is guaranteed and at the same time the excess moisture or droplet formation from the previously sprayed oxidant is included.

Claims (1)

Verfahren zum Entfernen von in Rauchgasen enthaltenen Schadstoffen wie NO x , bei dem in das Rauchgas vor der Kontaktierung mit pulverförmigen Absorptionsmassen wie Erdalkalistäuben eine Flüssigkeit in der Menge zugegeben wird, daß die überschüssige Feuchte von den eingeblasenen pulverförmigen Absorptionsmassen aufgenommen wird, so daß in dem nachgeschalteten Staubabscheider keine Inkonstationen auftreten, dadurch gekennzeichnet, daß die Flüssigkeit aus Wasserstoffperoxid zur Aufoxidation von NO x besteht.Process for removing pollutants contained in flue gases such as NO x , in which a liquid is added to the flue gas before contacting powdered absorption masses such as alkaline earth dust in such a way that the excess moisture is absorbed by the powdered absorption masses blown in, so that the downstream Dust separators no inconsistencies occur, characterized in that the liquid consists of hydrogen peroxide for the oxidation of NO x .
DE19752555220 1975-02-06 1975-12-09 Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage Granted DE2555220A1 (en)

Priority Applications (21)

Application Number Priority Date Filing Date Title
DE19752555220 DE2555220A1 (en) 1975-05-06 1975-12-09 Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage
AT0305376A AT363918B (en) 1975-05-06 1976-04-26 METHOD AND DEVICE FOR PURIFYING GAS
BR2662/76A BR7602662A (en) 1975-05-06 1976-04-29 GAS CLEANING PROCESS AND APPLIANCE
SE7605102A SE422890B (en) 1975-05-06 1976-05-04 GAS PURIFICATION AND EQUIPMENT
IT22934/76A IT1059765B (en) 1975-05-06 1976-05-04 GAS PURIFICATION DEVICE
US05/683,205 US4061476A (en) 1975-05-06 1976-05-04 Gas purification method and apparatus
FR7613443A FR2310151A1 (en) 1975-05-06 1976-05-05 METHOD AND DEVICE FOR GAS PURIFICATION
CH564676A CH612593A5 (en) 1975-05-06 1976-05-05
DK200276A DK200276A (en) 1975-05-06 1976-05-05 GAS CLEANING PROCEDURE AND APPLIANCE
NL7604793A NL7604793A (en) 1975-05-06 1976-05-05 METHOD AND DEVICE FOR CLEANING GASES.
GB18345/76A GB1551356A (en) 1975-05-06 1976-05-05 Purification of gas
GB4295478A GB1551357A (en) 1975-05-06 1976-05-05 Purification of gas
BE2055003A BE841447A (en) 1975-05-06 1976-05-05 METHOD AND DEVICE FOR GAS PURIFICATION
CA251,860A CA1059927A (en) 1975-05-06 1976-05-05 Gas purification method and apparatus
AU13672/76A AU503617B2 (en) 1975-05-06 1976-05-05 Gas purification
ES447653A ES447653A1 (en) 1975-05-06 1976-05-06 Gas purification method and apparatus
JP51051632A JPS608854B2 (en) 1975-05-06 1976-05-06 Gas purification method and equipment
MX76100284U MX3628E (en) 1975-05-06 1976-05-06 IMPROVEMENTS IN PROCEDURE AND DEVICE FOR GAS DEPURATION
US05/844,185 US4201751A (en) 1975-05-06 1977-10-21 Gas purification
GB4387177A GB1594855A (en) 1975-05-06 1977-10-21 Purification of gases
US05/869,147 US4206186A (en) 1975-02-06 1978-01-13 Refuse pyrolysis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19752520045 DE2520045A1 (en) 1975-05-06 1975-05-06 Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage
DE19752555220 DE2555220A1 (en) 1975-05-06 1975-12-09 Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage

Publications (2)

Publication Number Publication Date
DE2555220A1 DE2555220A1 (en) 1977-06-23
DE2555220C2 true DE2555220C2 (en) 1987-11-19

Family

ID=25768853

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752555220 Granted DE2555220A1 (en) 1975-02-06 1975-12-09 Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage

Country Status (1)

Country Link
DE (1) DE2555220A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908052A1 (en) * 1989-03-13 1990-09-20 Ftu Gmbh Process and apparatus for treating exhaust gases by oxidation of pollutants

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216772A1 (en) * 1992-05-21 1993-12-16 Ftu Forschung Und Tech Entwick Pre-purified gas or waste gas denitrification - by oxidising nitric oxide to nitrogen di:oxide or nitric acid with hydrogen peroxide and absorption on calcium hydroxide powder, avoiding di:nitrogen oxide formation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE794918A (en) * 1972-02-04 1973-08-02 Oxysynthese PROCESS FOR CLEANING INDUSTRIAL FUMES, COMBUSTION PRODUCTS AND GASEOUS EFFLENTS BEFORE RELEASE TO THE ATMOSPHERE
JPS49126566A (en) * 1973-04-10 1974-12-04
DE2331156B2 (en) * 1973-06-19 1978-05-24 Stahlwerke Roechling - Burbach Gmbh, 6620 Voelklingen Device for removing gaseous pollutants contained in exhaust gases

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908052A1 (en) * 1989-03-13 1990-09-20 Ftu Gmbh Process and apparatus for treating exhaust gases by oxidation of pollutants
DE3908052B4 (en) * 1989-03-13 2004-12-09 Ftu Gmbh Process for the treatment of exhaust gases with oxidation of pollutants

Also Published As

Publication number Publication date
DE2555220A1 (en) 1977-06-23

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