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 residuesInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims description 4
- 239000002918 waste heat Substances 0.000 title description 2
- 238000006477 desulfuration reaction Methods 0.000 title 1
- 230000023556 desulfurization Effects 0.000 title 1
- 150000003839 salts Chemical group 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims 1
- 239000003546 flue gas Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
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)
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)
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 |
-
1992
- 1992-01-23 DE DE19924201684 patent/DE4201684C2/en not_active Expired - Lifetime
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 |