DE4201684C2 - Process for the desulfurization of cupola furnaces while using the waste heat to evaporate the salt residues - Google Patents

Process for the desulfurization of cupola furnaces while using the waste heat to evaporate the salt residues

Info

Publication number
DE4201684C2
DE4201684C2 DE19924201684 DE4201684A DE4201684C2 DE 4201684 C2 DE4201684 C2 DE 4201684C2 DE 19924201684 DE19924201684 DE 19924201684 DE 4201684 A DE4201684 A DE 4201684A DE 4201684 C2 DE4201684 C2 DE 4201684C2
Authority
DE
Germany
Prior art keywords
evaporate
desulfurization
waste heat
cupola furnaces
salt residues
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 - Lifetime
Application number
DE19924201684
Other languages
German (de)
Other versions
DE4201684A1 (en
Inventor
Heinz Prof Dr Hoelter
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.)
HOELTER INDUSTRIE BETEILIGUNGS AG, 45136 ESSEN, DE
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
Priority to DE19924201684 priority Critical patent/DE4201684C2/en
Publication of DE4201684A1 publication Critical patent/DE4201684A1/en
Application granted granted Critical
Publication of DE4201684C2 publication Critical patent/DE4201684C2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning 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
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound

Landscapes

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

Description

Es ist bekannt, Gas mit Natronlauge zu entschwefeln. Dieses soll hinter Kupolofenanlagen auch angewandt werden.It is known to desulfurize gas with sodium hydroxide solution. This should also be used behind cupola furnaces become.

Das Entsorgen der Natronlauge ist im Grunde genommen nicht preiswert.The disposal of the caustic soda is basically not inexpensive.

In der Regel müssen Sprühabsorber genommen werden, um die Natronlauge einzudampfen und Natriumsulfat zu erhalten.As a rule, spray absorbers must be taken to evaporate the sodium hydroxide solution and sodium sulfate to obtain.

Das Entsorgen von Natriumsulfat geschieht in der Regel in Säcken und wird einer geeigneten Deponie zugeführt.Sodium sulfate is usually disposed of in bags and is sent to a suitable landfill.

Um diesen aufwendigen Verfahrensschritt einzusparen, wird erfindungsgemäß vorgeschlagen, das Eindampfen der Sulfatlösung durch die Abwärme der Schlacke vorzunehmen. In order to save this complex process step, is proposed according to the invention, evaporation the sulfate solution by the waste heat of the slag.  

Dieses kann in einfachster Weise dadurch geschehen, daß im geeigneten Abkühlungsbereich der Schlacke die wäßrige Sulfatlösung zugeführt wird. Das Wasser ver­ dampft, und das Natriumsulfat mit der Schlacke kann dann einer geeigneten Deponie zugeführt werden.This can be done in the simplest way by that in the appropriate cooling area of the slag aqueous sulfate solution is supplied. The water ver vapors, and the sodium sulfate with the slag can then be taken to a suitable landfill.

Durch diese erfindungsgemäße Maßgabe wird das Ver­ fahren wesentlich preiswerter als bisher mit dem sonst notwendigen Sprühabsorptionsverfahren.By this provision according to the invention, the Ver drive much cheaper than before with the other necessary spray absorption process.

Claims (1)

Verfahren zur Beseitigung von SO₂ aus Abgasen hinter Kupolöfen in einer Natronlaugewäsche, dadurch gekenn­ zeichnet, daß nach der Absorption des Rauchgases und anschließender Oxidation des gebildeten Natriumhydrogen­ sulfits zu Natriumsulfat die wäßrige Natriumsulfatlösung der sich abkühlenden Schlacke zur Verdampfung des Wasseranteils zugeführt wird.Process for the removal of SO₂ from exhaust gases behind cupola furnaces in a sodium hydroxide solution, characterized in that after the absorption of the flue gas and subsequent oxidation of the sodium hydrogen sulfite formed to sodium sulfate, the aqueous sodium sulfate solution of the cooling slag is fed to evaporate the water content.
DE19924201684 1992-01-23 1992-01-23 Process for the desulfurization of cupola furnaces while using the waste heat to evaporate the salt residues Expired - Lifetime DE4201684C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924201684 DE4201684C2 (en) 1992-01-23 1992-01-23 Process for the desulfurization of cupola furnaces while using the waste heat to evaporate the salt residues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924201684 DE4201684C2 (en) 1992-01-23 1992-01-23 Process for the desulfurization of cupola furnaces while using the waste heat to evaporate the salt residues

Publications (2)

Publication Number Publication Date
DE4201684A1 DE4201684A1 (en) 1993-07-29
DE4201684C2 true DE4201684C2 (en) 1994-09-15

Family

ID=6450045

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924201684 Expired - Lifetime DE4201684C2 (en) 1992-01-23 1992-01-23 Process for the desulfurization of cupola furnaces while using the waste heat to evaporate the salt residues

Country Status (1)

Country Link
DE (1) DE4201684C2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703724A1 (en) * 1987-02-05 1988-08-18 Mannesmann Ag Process for concentrating a waste solution from flue gas purification
DE3830392A1 (en) * 1988-09-07 1990-03-15 Huettenwerksanlagen M B H Ges Process for disposing of pollutant-containing bulk material

Also Published As

Publication number Publication date
DE4201684A1 (en) 1993-07-29

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HOELTER INDUSTRIE BETEILIGUNGS AG, 45136 ESSEN, DE

8330 Complete disclaimer