DE3135317A1 - Process for purifying flue gas, preferably from SO2, NOx, HCl, HF, etc - Google Patents
Process for purifying flue gas, preferably from SO2, NOx, HCl, HF, etcInfo
- Publication number
- DE3135317A1 DE3135317A1 DE19813135317 DE3135317A DE3135317A1 DE 3135317 A1 DE3135317 A1 DE 3135317A1 DE 19813135317 DE19813135317 DE 19813135317 DE 3135317 A DE3135317 A DE 3135317A DE 3135317 A1 DE3135317 A1 DE 3135317A1
- Authority
- DE
- Germany
- Prior art keywords
- container
- flue gas
- hcl
- nox
- supplied
- 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
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000003546 flue gas Substances 0.000 title claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 6
- 238000005406 washing Methods 0.000 claims description 10
- 238000004062 sedimentation Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 1
- 239000007800 oxidant agent Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000007789 gas Substances 0.000 description 8
- 235000019738 Limestone Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application
"Verfahren zur Rauchgasreinigiing, vorzugsweise von SO2, N°x HCl, HF usw." Es ist bekannt, vorzugsweise hinter Kohlekraftwerken Rauchgasreinigungsanlagen zu installieren, die das Abgas auf Kalkhydrat- oder Kalksteinbasis in der Flüssigkeitsphase reinigen."Process for flue gas cleaning, preferably of SO2, N ° x HCl, HF etc. "It is known, preferably behind coal-fired power plants, flue gas cleaning systems to install the exhaust gas based on hydrated lime or limestone in the liquid phase clean.
Um die Anbackungen in den Gaswaschvorrichtungen so gering wie möglich zu halten, werden vielfach Carbonsäuren dem Waschwasser zugesetzt und zum Absenken der Gipskristalle große Absetzbehälter für das abfließende Waschwasser vorgesehen.To keep caking in the gas scrubbing devices as low as possible To keep, carboxylic acids are often added to the wash water and to lower it the gypsum crystals large sedimentation tanks are provided for the draining washing water.
Überraschend konnte festgesteLlt werden, daß die großen Absetzbehälter zum Abscheiden der Gipskristalle aus dem Waschwasserkreislauf nicht notwendig sind, wenn ein Verfahren und eine.Vorrichtung entsprechend beiliegender Zeichnung zur Rauchgasreinigung Anwendung finden.Surprisingly, it was found that the big ones No sedimentation tank for separating the gypsum crystals from the wash water circuit are necessary if a procedure and a device are included accordingly Find drawing for flue gas cleaning application.
In der beiliegenden Zeichnung ist dargestellt: mit (1) das zu reinigende Rohgas mit (2) die Düsenanordnung mit (3) die Waschwasserstrecken mit (4) der Oxideur mit (5) die Belüftungseinrichtungen mit (6) der Neutralisationsbehälter mit vorzugsweise Rührwerk mit (7) Pumpenanordnung mit (8) die Waschwasserzuführungsleitung mit (9) die Trockenkalkzugabe (Kalkstein bzw.The attached drawing shows: with (1) the one to be cleaned Raw gas with (2) the nozzle arrangement with (3) the washing water lines with (4) the Oxideur with (5) the ventilation devices with (6) the neutralization tank with preferably Agitator with (7) pump arrangement with (8) the washing water supply line with (9) the addition of dry lime (limestone or
Weißfeinkalk usw.) mit (10) der Gipsaustrag mit (11) ein Tropfenabscheider mit (12) der Reingasaustritt mit (13) das Krählwerk im Oxideur und Grobtropfenabscheider. White fine lime etc.) with (10) the gypsum discharge with (11) a droplet separator with (12) the clean gas outlet with (13) the rake in the Oxideur and coarse droplet separator.
Arbeitsweise des erfindungsgemäßen Verfahrens: Das Rohgas tritt bei (1) in die Wäscherrohre (3) ein und wird über die Düsen (2) mit dem Waschwasser, das einen pH-Wert von ca. 5,0 - 6,5 besitzt, in Kontakt gebracht.Method of operation of the method according to the invention: The raw gas enters (1) into the scrubber pipes (3) and is fed with the washing water via the nozzles (2), which has a pH value of approx. 5.0 - 6.5, brought into contact.
Das Gasflüssigkeitsgemisch tritt bei (4) in eine Grobtropfenabscheidekammer, die gleichzeitig als Oxidations- und Sedimentationsbehälter-Vorrichtung (4) ausgelegt ist, ein.The gas-liquid mixture enters a coarse droplet separation chamber at (4), designed at the same time as an oxidation and sedimentation container device (4) is a.
Hier wird das gewaschene Gas vom Wasser getrennt.Here the scrubbed gas is separated from the water.
Das gereinigte Gas tritt über den Tropfenabscheider (11) in den Kamin (12) ein.The cleaned gas enters the chimney via the droplet separator (11) (12) a.
Das im Oxidations- und Sedimentationsbehälter verbleibende Waschwasser, das einen pH-Wert von 4 - 4,5 hat, wird über vorzugsweise Turbolüfter (5) oxidiert.The washing water remaining in the oxidation and sedimentation tank, which has a pH value of 4 - 4.5 is oxidized, preferably via a turbo fan (5).
Hierbei wird der pH-Wert des Waschwassers durch die Bildung freier Schwefelsäure auf pH bis zu 3,5 absinken.The pH value of the wash water becomes freer as a result of the formation Sulfuric acid drop to pH up to 3.5.
Nach der Oxidation tritt das Waschwasser in den Neutralisationsbehälter (6) ein und wird durch Zugabe von Kalk in trockener Form wieder auf einen pH-Wert von ca. 6,5 gebracht und über die Pumpe (7) und der entsprechenden Waschwasseraufgabeleitung (8) dem Wascher zur Rohgaswaschung zugeführt.After the oxidation, the washing water enters the neutralization tank (6) and is brought back to a pH value by adding lime in dry form of approx. 6.5 and via the pump (7) and the corresponding washing water feed line (8) fed to the scrubber for raw gas scrubbing.
Hierdurch ist der Waschwasserkreislauf geschlossen.This closes the wash water cycle.
Durch Konditionierung entstandene Wasserverluste können über Spülwassermengen, die dem Tropfenabscheider (11) zugeführt werden, ergänzt werden, Die Schwimmerventile aus der Frischwasserleitung können den dann noch fehlenden Restwasserbedarf nachnive llieren.Water losses caused by conditioning can be increased via quantities of rinse water, which are fed to the droplet separator (11), the float valves The remaining water requirement can then be made up from the fresh water pipe to run.
Der Gips wird bei (10) ausgetragen und über Zentrifugen, Hydrozyklone, Trommelvakuumfilter usw. - entsprechend der Aufgabenstellung -entwässert.The gypsum is discharged at (10) and passed through centrifuges, hydrocyclones, Drum vacuum filter etc. - drained according to the task at hand.
Durch diese erfindungsgemäße Fahrweise und Vorrichtung zur Durchführung der Rauchgas reinigungsfahrweise können große Absetzbehälter entfallen, Patentanspruch: LeerseiteBy this inventive driving method and device for implementation Large sedimentation tanks can be dispensed with when using the flue gas cleaning method, patent claim: Blank page
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813135317 DE3135317A1 (en) | 1981-09-05 | 1981-09-05 | Process for purifying flue gas, preferably from SO2, NOx, HCl, HF, etc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813135317 DE3135317A1 (en) | 1981-09-05 | 1981-09-05 | Process for purifying flue gas, preferably from SO2, NOx, HCl, HF, etc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3135317A1 true DE3135317A1 (en) | 1983-03-24 |
Family
ID=6141027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19813135317 Ceased DE3135317A1 (en) | 1981-09-05 | 1981-09-05 | Process for purifying flue gas, preferably from SO2, NOx, HCl, HF, etc |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3135317A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3329633A1 (en) * | 1983-08-17 | 1985-03-07 | Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen | METHOD AND WASHING TOWER FOR DESULFURING INDUSTRIAL SMOKE GASES |
| DE3607192A1 (en) * | 1986-03-05 | 1987-09-10 | Knauf Res Cottrell | METHOD FOR REGULATING THE WATER BUDGET OF WET FLUE GAS DESULFURATION PLANTS |
| DE3607191A1 (en) * | 1986-03-05 | 1987-09-10 | Knauf Res Cottrell | METHOD FOR REDUCING CHLORIDE EXPOSURE IN WET FLUE GAS DESULFURATION PLANTS |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2735566A1 (en) * | 1977-08-06 | 1979-02-22 | Metallgesellschaft Ag | METHOD FOR REMOVING FLUOROUS COMPOUNDS AND SULFUR DIOXIDE FROM EXHAUST GASES |
| DE2755252A1 (en) * | 1977-12-12 | 1979-07-05 | Babcock Bsh Ag | METHOD OF REMOVING SULFUR DIOXIDE FROM EXHAUST GASES TO CREATE PLASTER |
-
1981
- 1981-09-05 DE DE19813135317 patent/DE3135317A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2735566A1 (en) * | 1977-08-06 | 1979-02-22 | Metallgesellschaft Ag | METHOD FOR REMOVING FLUOROUS COMPOUNDS AND SULFUR DIOXIDE FROM EXHAUST GASES |
| DE2755252A1 (en) * | 1977-12-12 | 1979-07-05 | Babcock Bsh Ag | METHOD OF REMOVING SULFUR DIOXIDE FROM EXHAUST GASES TO CREATE PLASTER |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3329633A1 (en) * | 1983-08-17 | 1985-03-07 | Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen | METHOD AND WASHING TOWER FOR DESULFURING INDUSTRIAL SMOKE GASES |
| DE3607192A1 (en) * | 1986-03-05 | 1987-09-10 | Knauf Res Cottrell | METHOD FOR REGULATING THE WATER BUDGET OF WET FLUE GAS DESULFURATION PLANTS |
| DE3607191A1 (en) * | 1986-03-05 | 1987-09-10 | Knauf Res Cottrell | METHOD FOR REDUCING CHLORIDE EXPOSURE IN WET FLUE GAS DESULFURATION PLANTS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |