DE3541471A1 - SO2 and/or SO2 and NOx scrubber with upstream calcium chloride recovery - Google Patents
SO2 and/or SO2 and NOx scrubber with upstream calcium chloride recoveryInfo
- Publication number
- DE3541471A1 DE3541471A1 DE19853541471 DE3541471A DE3541471A1 DE 3541471 A1 DE3541471 A1 DE 3541471A1 DE 19853541471 DE19853541471 DE 19853541471 DE 3541471 A DE3541471 A DE 3541471A DE 3541471 A1 DE3541471 A1 DE 3541471A1
- Authority
- DE
- Germany
- Prior art keywords
- gypsum
- scrubbing
- chloride
- flue gas
- constituents
- 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.)
- Granted
Links
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 title claims 2
- 229910001628 calcium chloride Inorganic materials 0.000 title claims 2
- 239000001110 calcium chloride Substances 0.000 title claims 2
- 238000011144 upstream manufacturing Methods 0.000 title abstract description 4
- 238000011084 recovery Methods 0.000 title 1
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 11
- 239000010440 gypsum Substances 0.000 claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims abstract description 9
- 239000006096 absorbing agent Substances 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 6
- 230000002378 acidificating effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000005201 scrubbing Methods 0.000 abstract 5
- 239000000470 constituent Substances 0.000 abstract 3
- 238000005507 spraying Methods 0.000 abstract 2
- BYHQTRFJOGIQAO-GOSISDBHSA-N 3-(4-bromophenyl)-8-[(2R)-2-hydroxypropyl]-1-[(3-methoxyphenyl)methyl]-1,3,8-triazaspiro[4.5]decan-2-one Chemical compound C[C@H](CN1CCC2(CC1)CN(C(=O)N2CC3=CC(=CC=C3)OC)C4=CC=C(C=C4)Br)O BYHQTRFJOGIQAO-GOSISDBHSA-N 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 150000003839 salts Chemical class 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
- 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
- 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
-
- 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
- C01F11/20—Halides
- C01F11/24—Chlorides
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
It is known to scrub out SO2 from the dirty gas stream downstream of fossil-fuelled combustion plants by means of an aqueous solution which is enriched with lime. The aim is to free from gaseous pollutants the dirty gas loaded with SO2 and NOx and other acidic constituents and to achieve gypsum as an end product. In order to create a waste water-free process of the abovementioned type, according to the invention it is proposed that the scrubbing water which is used for gypsum scrubbing is collected and fed to a spraying and quenching absorber stage upstream of the flue gas desulphurisation scrubbing plant. The gypsum is scrubbed in a centrifuge or vacuum filter in such a way that it complies with the specification of low chloride-containing constituents. In the spraying and quench absorber stage, the flue gas at an acidic pH is brought down from for example 140 DEG to 100 DEG C, the chloride-containing gases, by means of the wash water from the gypsum scrubbing station, already also enriched with chloride, serving for scrubbing out the chloride-containing constituents in the gas with simultaneous flue gas cooling.
Description
Es ist bekannt, daß Gips mit nur geringen Calcium- Spuren vermarktet werden kann.It is known that gypsum with only low calcium Traces can be marketed.
Andererseits ist auch bekannt, daß Chlorid z. B. im Bergbau als Staubbindemittel Anwendung finden kann.On the other hand, it is also known that chloride z. B. in Mining can be used as a dust binder.
Um ein abwasserfreies Verfahren zu erhalten, wird erfindungsgemäß vorgeschlagen, den Gips in der Zentrifuge oder auf einem Vakuumfilter so zu waschen, daß er die Spezifikation der geringen chloridhaltigen Bestandteile erfüllt, und dieses Waschwasser einer der Rauchgasentschwefelungsanlage vorgeschalteten Sprühtrockner- Quencherstufe zugeführt wird, in der mit einem sauren pH-Wert das Rauchgas von z. B. 140°C auf 100°C herabgedrückt wird, wobei gleichzeitig die chloridhaltigen Gase durch das bereits auch mit Chlorid angereicherte Spülwasser aus der Gipswaschstation zur Auswaschung der chloridhaltigen Bestandteile im Gas dienen bei gleichzeitiger Rauchgasabkühlung.In order to obtain a wastewater-free process, proposed according to the invention, the plaster in the Centrifuge or wash on a vacuum filter so that he has the specification of low chloride Components met, and this wash water one of the Flue gas desulfurization system upstream spray dryer Quencher stage is fed in with an acidic pH the flue gas of z. B. 140 ° C. 100 ° C is depressed, while the gases containing chloride due to that already with chloride enriched rinsing water from the gypsum washing station for Leaching out of the chloride-containing components in the gas serve with simultaneous flue gas cooling.
In der beiliegenden Zeichnung ist das Verfahren
dargestellt:
mit (1) der vorgeschaltete Chlorid-Sprühturm;
mit (2) der Rauchgaswäscher;
mit (3) ein Trommelvakuumfilter mit Gipswaschstation;
mit (4) die Rückführung des Gipswaschwassers in den
Sprüh- und Quenchabsorber (1);
mit (5) die anfallenden Salze unterhalb vom Sprüh-
und Quenchabsorber;
mit (6) der ausgetragene, gewaschene Rohgips.The process is shown in the accompanying drawing:
with ( 1 ) the upstream chloride spray tower;
with ( 2 ) the flue gas scrubber;
with ( 3 ) a drum vacuum filter with gypsum washing station;
with ( 4 ) the return of the gypsum wash water into the spray and quench absorber ( 1 );
with ( 5 ) the resulting salts below the spray and quench absorber;
with ( 6 ) the discharged, washed raw gypsum.
Claims (1)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853541471 DE3541471A1 (en) | 1985-11-23 | 1985-11-23 | SO2 and/or SO2 and NOx scrubber with upstream calcium chloride recovery |
| EP86905803A EP0241496A1 (en) | 1985-10-11 | 1986-10-08 | Process for simultaneous extraction of so 2? and no x? contained in waste gases |
| PCT/EP1986/000572 WO1987002269A1 (en) | 1985-10-11 | 1986-10-08 | Process for simultaneous extraction of so2 and nox contained in waste gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853541471 DE3541471A1 (en) | 1985-11-23 | 1985-11-23 | SO2 and/or SO2 and NOx scrubber with upstream calcium chloride recovery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3541471A1 true DE3541471A1 (en) | 1987-05-27 |
| DE3541471C2 DE3541471C2 (en) | 1988-05-26 |
Family
ID=6286663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853541471 Granted DE3541471A1 (en) | 1985-10-11 | 1985-11-23 | SO2 and/or SO2 and NOx scrubber with upstream calcium chloride recovery |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3541471A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3305120A1 (en) * | 1983-02-15 | 1984-08-16 | Uhde Gmbh, 4600 Dortmund | Process for flue gas purification |
| DE3310716A1 (en) * | 1983-03-24 | 1984-10-18 | Uhde Gmbh, 4600 Dortmund | Process for eliminating HCl and SO2 from flue gas |
-
1985
- 1985-11-23 DE DE19853541471 patent/DE3541471A1/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3305120A1 (en) * | 1983-02-15 | 1984-08-16 | Uhde Gmbh, 4600 Dortmund | Process for flue gas purification |
| DE3310716A1 (en) * | 1983-03-24 | 1984-10-18 | Uhde Gmbh, 4600 Dortmund | Process for eliminating HCl and SO2 from flue gas |
Non-Patent Citations (1)
| Title |
|---|
| DE-Z: Umwelt, H.4, 1985, Sonderteil, S.32-34 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3541471C2 (en) | 1988-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0709128B1 (en) | Process for the removal of mercury from a mercury containing gas | |
| EP0005301B1 (en) | Process for the removal of sulphur oxides from high-chloride flue gases | |
| DE3513544A1 (en) | METHOD FOR DEPOSITING NITROGEN OXIDES | |
| EP0981022A1 (en) | Process for purification of flue gas | |
| DE2939744A1 (en) | Flue gas treatment to remove fly ash and sulphur oxide(s) - with pre:wash to remove fluorine and chlorine cpds. and residual fly ash allowing pure gypsum recovery | |
| DE3541471A1 (en) | SO2 and/or SO2 and NOx scrubber with upstream calcium chloride recovery | |
| DE3816532C1 (en) | Process for purifying flue gas | |
| DE3702463A1 (en) | Combined dry and wet flue gas purification system for separating off HF, HCl, SO3, SO2, NOx and dust | |
| DE2139678B2 (en) | Process for cleaning exhaust gases from waste incineration plants | |
| DE3642468A1 (en) | Simultaneous separation of SO2 and NOx in a system step with separate additive addition | |
| WO1986006981A1 (en) | METHOD FOR SIMULTANEOUSLY REMOVING BY WASHING SO2, NOx AND OPTIONALLY OTHER NOXIOUS SUBSTANCES CONTAINED IN FLUE GASES IN HEATING INSTALLATIONS SUPPLIED WITH FOSSILE FUELS | |
| DE3641170A1 (en) | Simultaneous SO2/NOx wet scrubbing process with scrubbing water treatment for purifying combustion exhaust gases | |
| DE2425324C2 (en) | Method for cleaning SO? 2? -Containing flue gases using a wet electrostatic precipitator | |
| DE3202059A1 (en) | Process for the purification of waste gas containing CO2 and other acidic constituents | |
| DE2519489A1 (en) | Gas purification to remote sulphur dioxide - with calcium cpds in presence of sulphuric and other acids to prevent deposition of calcium carbonate | |
| DE3537948A1 (en) | Simultaneous SO2 and NOx process for purifying flue gases which have in particular high SO2 loadings | |
| AT393971B (en) | Process for producing SO2-rich gases and apparatus for carrying out the process | |
| CH665781A5 (en) | METHOD AND DEVICE FOR PURIFYING GASES. | |
| DE2707935C2 (en) | Method and device for cleaning flue gases and other exhaust gases containing sulphur dioxide | |
| DE2657970A1 (en) | Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide | |
| DE3537949A1 (en) | SO2 and NOx gas purification plant having sodium sulphate end product | |
| DE3528971A1 (en) | Process for the simultaneous SO2/NOx separation from flue gases with simultaneous recovery of SO2-rich gas | |
| DE2715082A1 (en) | Cycle flue gas desulphurisation - using ammonium sulphite soln. with desorption by ammonium hydrogen sulphate melt regenerated by direct heating | |
| EP0832680B1 (en) | Process for cleaning exhaust gas from furnaces for fossil fuel | |
| DE3541323C2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8331 | Complete revocation |