DE3543843A1 - Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content - Google Patents

Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content

Info

Publication number
DE3543843A1
DE3543843A1 DE19853543843 DE3543843A DE3543843A1 DE 3543843 A1 DE3543843 A1 DE 3543843A1 DE 19853543843 DE19853543843 DE 19853543843 DE 3543843 A DE3543843 A DE 3543843A DE 3543843 A1 DE3543843 A1 DE 3543843A1
Authority
DE
Germany
Prior art keywords
iron
scrubbing
complex
nox
manganese content
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.)
Ceased
Application number
DE19853543843
Other languages
German (de)
Inventor
Heinz Dipl Ing Hoelter
Heinrich Dipl Ing Igelbuescher
Heinrich Ing Grad Gresch
Heribert Dipl Ing Dewert
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 DE19853525051 external-priority patent/DE3525051A1/en
Application filed by Individual filed Critical Individual
Priority to DE19853543843 priority Critical patent/DE3543843A1/en
Priority to PCT/EP1986/000572 priority patent/WO1987002269A1/en
Priority to EP86905803A priority patent/EP0241496A1/en
Publication of DE3543843A1 publication Critical patent/DE3543843A1/en
Ceased legal-status Critical Current

Links

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
    • B01D53/46—Removing components of defined structure
    • B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
    • 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
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/464—Sulfates of Ca from gases containing sulfur oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/48—Sulfites
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

As specified in the main application P 3525051.8, it is known to scrub SO2 and NOx from combustion exhaust gases by the use of a wet-cycle scrubbing in which the scrubbing water contains iron(II) EDTA complex or iron(II) NTA complex. In order to obtain the iron(II) complex within the scrubbing solution, reducing agents are added or scrubbing water treatment processes are carried out in bypass operation in order to further reduce the iron which was oxidised by means of atmospheric oxygen from iron(II) to iron(III) in the chelate complex and thus to minimise the use of expensive reducing agents. In order further technically and economically to improve this process, in particular to reduce the consumption of reducing agent, it is proposed according to the invention that the iron(II) salts, preferably iron(II) sulphate, and calcium oxide, in particular hydrated lime, used for preparing the scrubbing solution, have a manganese content of less than 0.05 to 0.07% based on the dry substances.

Description

Als Zusatz zu der Patentanmeldung P 35 25 051.8 wurde erfindungsgemäß gefunden, daß bei Zuschlagstoffen wie Kalk und Eisen-II-sulfat zur Herstellung einer Waschlösung für simultane So2/NO x -Verfahren mit geringen Manganmengen die Eisen-II-Beständigkeit in dem Fe- EDTA-Komplex wesentlich beständiger ist.As an addition to patent application P 35 25 051.8, it was found according to the invention that with additives such as lime and iron (II) sulfate for the production of a washing solution for simultaneous So 2 / NO x processes with small amounts of manganese, the iron (II) resistance in the Fe EDTA complex is much more stable.

So wird z. B. erfindungsgemäß vorgeschlagen, daß bei den Eisen-II-Salzen die Manganmenge um 0,05%, auf Trockenbasis gerechnet, gehalten werden sollte über den üblichen 0,14% Trockenbasis. So z. B. proposed according to the invention that at the Iron II salts the amount of manganese by 0.05%, on a dry basis should be kept above the usual 0.14% dry basis.  

Auswaschgrade von besser als 10% bei 0,05% im Eisen-II- Salz über 0,14% im Eisen-II- Salz, trocken gemessen, wurden gefunden.Washout degrees of better than 10% at 0.05% in Iron II salt over 0.14% in the iron II salt, measured dry were found.

Claims (1)

Verfahren zur simultanen Waschung von SO2 und NO x dadurch gekennzeichnet, daß die zur Herstellung der Waschlösung eingesetzten Eisen-II- Salze, bevorzugt Eisen-II-Sulfat und Calciumoxid, insbesondere Kalkhydrat, einen Mangangehalt aufweisen von kleiner 0,05-0,07% auf Trockenbasis.Process for the simultaneous washing of SO 2 and NO x, characterized in that the iron (II) salts used for the preparation of the washing solution, preferably iron (II) sulfate and calcium oxide, in particular hydrated lime, have a manganese content of less than 0.05-0.07 % on a dry basis.
DE19853543843 1985-07-13 1985-12-12 Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content Ceased DE3543843A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19853543843 DE3543843A1 (en) 1985-07-13 1985-12-12 Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content
PCT/EP1986/000572 WO1987002269A1 (en) 1985-10-11 1986-10-08 Process for simultaneous extraction of so2 and nox contained in waste gases
EP86905803A EP0241496A1 (en) 1985-10-11 1986-10-08 Process for simultaneous extraction of so 2? and no x? contained in waste gases

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853525051 DE3525051A1 (en) 1985-07-13 1985-07-13 Process for removing HCl, HF, SO3, SO2 and oxides of nitrogen from combustion exhaust gases by a simultaneous wet scrubbing
DE19853543843 DE3543843A1 (en) 1985-07-13 1985-12-12 Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content

Publications (1)

Publication Number Publication Date
DE3543843A1 true DE3543843A1 (en) 1987-06-19

Family

ID=25833984

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853543843 Ceased DE3543843A1 (en) 1985-07-13 1985-12-12 Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content

Country Status (1)

Country Link
DE (1) DE3543843A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108854461A (en) * 2018-05-24 2018-11-23 浙江工业大学 Mn cooperates with Fe as reducing agentII(EDTA) application of resource processing NO

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2451274A1 (en) * 1973-10-31 1975-05-15 Kureha Chemical Ind Co Ltd PROCESS FOR THE REMOVAL OF NITROGEN OXIDES FROM GASES CONTAINING NITROGEN

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2451274A1 (en) * 1973-10-31 1975-05-15 Kureha Chemical Ind Co Ltd PROCESS FOR THE REMOVAL OF NITROGEN OXIDES FROM GASES CONTAINING NITROGEN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108854461A (en) * 2018-05-24 2018-11-23 浙江工业大学 Mn cooperates with Fe as reducing agentII(EDTA) application of resource processing NO

Similar Documents

Publication Publication Date Title
ES462716A1 (en) Working up spent sulphuric acid simultaneously with sulphate salts
DE2432903A1 (en) PROCESS FOR SEPARATING SULFUR OXYDES AND NITROGEN OXYDES FROM COMBUSTION GASES
DE3543843A1 (en) Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content
DE2161475B2 (en) Process for cyclic countercurrent washing of combustion exhaust gases containing sulfur oxide
DE3433396C2 (en) Process for the desulfurization of exhaust gas
DE3518974C2 (en)
DE3511427A1 (en) Process for the simultaneous scrubbing out of SO2 and NOx with simultaneous recycling of the complexing agent
DE3308648A1 (en) Scrubbing liquid for scrubbing acidic gases such as SO2, HCl, HF, NOx etc.
EP0223803A1 (en) METHOD FOR SIMULTANEOUSLY REMOVING BY WASHING SO 2?, NO x? AND OPTIONALLY OTHER NOXIOUS SUBSTANCES CONTAINED IN FLUE GASES IN HEATING INSTALLATIONS SUPPLIED WITH FOSSILE FUELS
DE3531968A1 (en) Simultaneous scrubbing of SO2 and NOx having an intermediate step
DE3601454A1 (en) Process for removing HCl, HF, SO3, SO2 and NOx from combustion exhaust gases by simultaneous wet scrubbing with controlled scrubbing water circulation and specific addition of lime
DE3512500A1 (en) Multi-stage HCl, SO2 and NOx scrubbing process for flue gas purification, preferably downstream of fossil-fuel power stations
DE3409526A1 (en) Simultaneous separating out of NOx and further associated flue gas pollutants
DE2657970A1 (en) Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide
DE3515707C2 (en)
DE2908322A1 (en) Sulphur di:oxide gas scrubbing process - using clear or turbid liquor according to gas compsn.
DE3531203A1 (en) Scrubbing water treatment for the simultaneous removal of SO2 and NOx from gases
DE2210463C3 (en) Method of dissolving plaster of paris
DE3525051C2 (en)
DE2752901C2 (en)
DE3614944A1 (en) Simultaneous scrubbing process for desulphurisation and simultaneous denitrification of flue gases downstream of refuse incinerators
SU1711953A1 (en) Method of producing absorbent for cleaning gases from hydrogen sulfide and carbon dioxide
DE3523354A1 (en) Simultaneous SO2 and NOx scrubbing downstream of combustion plants with simultaneous stabilization of the iron salt complexes in the scrubbing solution
EP0142017A3 (en) Process for accelerating the setting of a gypsum slurry, and its application to the production by a machine of finished plaster articles
DE3514407A1 (en) Multiple-stage HCl-, SO2- and NOx- scrubbing process for flue gas purification, preferably downstream of fossil-fuel power stations, having high sodium sulphite contents in the SO2- and NOx scrubbing stage and corresponding water treatment

Legal Events

Date Code Title Description
AF Is addition to no.

Ref country code: DE

Ref document number: 3525051

Format of ref document f/p: P

OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
AF Is addition to no.

Ref country code: DE

Ref document number: 3525051

Format of ref document f/p: P

8131 Rejection