DE3428691A1 - Process for the conversion of EDTA and sulphur-nitrogen compounds from waste waters of NOX scrubber units - Google Patents
Process for the conversion of EDTA and sulphur-nitrogen compounds from waste waters of NOX scrubber unitsInfo
- Publication number
- DE3428691A1 DE3428691A1 DE19843428691 DE3428691A DE3428691A1 DE 3428691 A1 DE3428691 A1 DE 3428691A1 DE 19843428691 DE19843428691 DE 19843428691 DE 3428691 A DE3428691 A DE 3428691A DE 3428691 A1 DE3428691 A1 DE 3428691A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- nitrogen compounds
- edta
- sulphur
- conversion
- 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.)
- Withdrawn
Links
- PFRUBEOIWWEFOL-UHFFFAOYSA-N [N].[S] Chemical class [N].[S] PFRUBEOIWWEFOL-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 239000002351 wastewater Substances 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title claims abstract description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 title abstract description 6
- 238000006243 chemical reaction Methods 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 5
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 4
- -1 carboxylic acid compounds Chemical class 0.000 claims abstract 2
- 238000005406 washing Methods 0.000 claims description 7
- 238000005201 scrubbing Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 239000000460 chlorine Substances 0.000 abstract description 2
- 229910052801 chlorine Inorganic materials 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 239000003643 water by type Substances 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application
"Verfahren zur Wandlung von ED#A und Schwefelstickstoffverbindungen aus Abwässern von NOx-Waschanlagen"."Process for the Conversion of ED # A and Sulfur-Nitrogen Compounds from waste water from NOx washing plants ".
Es ist bekannt, S02 und NO, simultan und/oder mehrstufig aus Rauchgasen von Fossilkraftwerken auszuwaschen.It is known that SO2 and NO, simultaneously and / or in multiple stages, from flue gases washed out by fossil fuel power plants.
Aufgrund des Chlorgehaltes in der Kohle muß eine Teilwassermenge abgeführt werden, um eine Aufsalzung der Waschwässer zu verhindern.Due to the chlorine content in the coal, part of the water has to be removed to prevent salt build-up in the washing water.
Zwangsläufig werden mit dieser Teilabgabemenge von Waschwasser aus dem Kreislauf auch das Additiv EDTA und die sich gebildeten Schwefelstickstoffverbindungen mit dem Wasser ausgetragen.Inevitably, with this partial delivery amount of wash water The EDTA additive and the sulfur-nitrogen compounds formed are also added to the cycle discharged with the water.
Das Aufbereiten der Teilabgabemenge in biologischen Abwasserbehandlungsanlagen oder durch chemische Aufoxidation ist aufwendig und soll durch die nachstehende Erfindung gemindert werden.The preparation of the partial delivery quantity in biological wastewater treatment plants or by chemical oxidation is expensive and should be replaced by the following Invention are diminished.
Erfindungsgemäß wird Wasser, das mit EDTA und/oder Schwefel-Stickstoff-Verbindungen und/oder Polycarbonsäuren angereichert ist, in den Bereich der heißesten Rohgaszuführung aufgegeben, vorzugsweise unmittelbar hinter dem Elektrofilter.According to the invention, water containing EDTA and / or sulfur-nitrogen compounds is used and / or polycarboxylic acids is enriched in the area of the hottest raw gas supply abandoned, preferably immediately after the electrostatic precipitator.
Hier werden bei Temperaturen von größer 13000 das genannte EDTA und/oder die Schwefelstickstoffverbindungen thermisch zersetzt und ungefährlich dem Waschprozeß der 1. Waschstufe zugeführt.Here, at temperatures greater than 13,000, the named EDTA and / or the sulfur-nitrogen compounds thermally decomposed and harmless to the washing process fed to the 1st washing stage.
Aus der 1. Waschstufe, die zur Verbesserung der Auswaschung von 502 und/oder NO auch mit Carbonsäuren und/oder Polycarbonsäuren betrieben wird, wird erfindungsgemäß vorgeschlagen, ebenfalls eine Teilwassermenge in die heißesten Bereiche der Rohgaszuführung aufzugeben, vor und/oder hinter dem Elektrofilter oder in die Feuerung, mit z.B. Zugabe über die zu verbrennende Kohle, so daß alle Schadstoffe thermisch so weit aufgespalten werden, daß sie für die Umwelt nicht mehr schädigend austreten können.From the 1st washing stage, which is used to improve the washout of 502 and / or NO is also operated with carboxylic acids and / or polycarboxylic acids proposed according to the invention, too a partial amount of water in abandon the hottest areas of the raw gas supply, in front of and / or behind the electrostatic precipitator or in the furnace, with e.g. addition over the coal to be burned, so that all Pollutants are broken down thermally to such an extent that they are not harmful to the environment can leak more damaging.
Erfindunsgemä ist der Gedanke in der Weise gegeben, daß grundsätzlich Teilmengen aus dem Waschbereich, aus dem Wasser abgegeben werden muß, dem Rohgasbereich zugeführt werden, in dem durch thermische Zersetzung die Schadstoffe unschädlich gemacht werden.According to the invention, the idea is given in such a way that fundamentally Partial quantities from the scrubbing area from which the water must be released, the raw gas area are supplied in which by thermal decomposition the pollutants are harmless be made.
Patentanspruch;Claim;
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843428691 DE3428691A1 (en) | 1984-08-03 | 1984-08-03 | Process for the conversion of EDTA and sulphur-nitrogen compounds from waste waters of NOX scrubber units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843428691 DE3428691A1 (en) | 1984-08-03 | 1984-08-03 | Process for the conversion of EDTA and sulphur-nitrogen compounds from waste waters of NOX scrubber units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3428691A1 true DE3428691A1 (en) | 1986-02-06 |
Family
ID=6242301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19843428691 Withdrawn DE3428691A1 (en) | 1984-08-03 | 1984-08-03 | Process for the conversion of EDTA and sulphur-nitrogen compounds from waste waters of NOX scrubber units |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3428691A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2548346A1 (en) * | 1974-11-06 | 1976-05-13 | Kureha Chemical Ind Co Ltd | Sulphur dioxide removal from combustion gases - by absorption in soln. contg. alkali salt or org. acid and manganous or cupric |
| DE2619145A1 (en) * | 1975-05-06 | 1976-11-25 | Fuji Kasui Eng Co Ltd | PROCESS FOR SEPARATING NITROGEN OXYDES AND SIMULTANEOUSLY SEPARATING NITROGEN OXYDE AND SULFUR OXYDE FROM EXHAUST GASES |
-
1984
- 1984-08-03 DE DE19843428691 patent/DE3428691A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2548346A1 (en) * | 1974-11-06 | 1976-05-13 | Kureha Chemical Ind Co Ltd | Sulphur dioxide removal from combustion gases - by absorption in soln. contg. alkali salt or org. acid and manganous or cupric |
| DE2619145A1 (en) * | 1975-05-06 | 1976-11-25 | Fuji Kasui Eng Co Ltd | PROCESS FOR SEPARATING NITROGEN OXYDES AND SIMULTANEOUSLY SEPARATING NITROGEN OXYDE AND SULFUR OXYDE FROM EXHAUST GASES |
Non-Patent Citations (1)
| Title |
|---|
| THOME-KOZMIENSKY K.J.: Müllverbrennung und Rauchgasreinigung, 1983, S. 595-609 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3539001C1 (en) | Process for reducing the nitrogen oxide content in the flue gas stream of a power plant boiler with flue gas cleaning system | |
| DE2518386B2 (en) | Process for removing acidic components from exhaust gases | |
| DE3137812A1 (en) | "METHOD FOR SEPARATING CHLORINE, FLUOR AND SULFUR FROM COMBUSTION AND SMOKE GASES" | |
| DE2847047A1 (en) | PROCESS FOR DESULFURIZATION OF SULFUR-CONTAINING PROCESS GASES | |
| DE1551878A1 (en) | Process for reducing air pollution from combustion products | |
| DE3428691A1 (en) | Process for the conversion of EDTA and sulphur-nitrogen compounds from waste waters of NOX scrubber units | |
| DE3737500A1 (en) | Wet-treatment process for heat recovery and pollutant removal from flue gases and exhaust gases | |
| DE19802274C2 (en) | Influencing the chemical processes in the thermal treatment or combustion of household waste or household waste similar to household waste in waste incineration plants (MVA) by means of sulfur or sulfur-containing additives with the aim of reducing chlorine / chloride corruption | |
| DE3015977A1 (en) | Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag | |
| DE2735812A1 (en) | Additives recovery from incinerator exhausts - using cooling stage after electrostatic precipitator to condense out and recycle additives | |
| DE4103463C2 (en) | Process for burning dried sewage sludge | |
| DE60126530T2 (en) | Process for removing an acidic deposit | |
| EP0009730B1 (en) | Process for treating waste acids | |
| DE3329342A1 (en) | Treatment process for flue gases from a steam generation plant having a plurality of boiler units and a slag tap fired furnace assigned to each boiler unit | |
| DE3502208C2 (en) | Process for the simultaneous separation of SO↓2↓ and NO↓x↓ from raw gas | |
| DE4237995C2 (en) | Process for the separation of harmful gases | |
| DE3429663C2 (en) | Process for simultaneous SO2 and NOx separation from the flue gases of combustion boilers | |
| DE3119422A1 (en) | Hybrid process having damming material as the final product with utilisation of the waste heat prior to the flue gas desulphurisation | |
| DE3641170A1 (en) | Simultaneous SO2/NOx wet scrubbing process with scrubbing water treatment for purifying combustion exhaust gases | |
| DE3202059A1 (en) | Process for the purification of waste gas containing CO2 and other acidic constituents | |
| DE3635458A1 (en) | Process for separating off SO2 and NOx and return of residues to the coal waiting for combustion | |
| DE3545190C2 (en) | ||
| DE2707935C2 (en) | Method and device for cleaning flue gases and other exhaust gases containing sulphur dioxide | |
| DE3308648A1 (en) | Scrubbing liquid for scrubbing acidic gases such as SO2, HCl, HF, NOx etc. | |
| DE1202432B (en) | Process for desulphurization, devanadinization and dealkalization of hot gases to be fed to the burner at high temperatures |
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 | ||
| 8139 | Disposal/non-payment of the annual fee |