WO1995034369A1 - Verfahren und vorrichtung zum abscheiden von dampfförmigen alkali- und schwermetallverbindungen aus heissen verbrennungsgasen - Google Patents
Verfahren und vorrichtung zum abscheiden von dampfförmigen alkali- und schwermetallverbindungen aus heissen verbrennungsgasen Download PDFInfo
- Publication number
- WO1995034369A1 WO1995034369A1 PCT/EP1995/001345 EP9501345W WO9534369A1 WO 1995034369 A1 WO1995034369 A1 WO 1995034369A1 EP 9501345 W EP9501345 W EP 9501345W WO 9534369 A1 WO9534369 A1 WO 9534369A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- combustion gases
- hot combustion
- slurry
- metal
- sorbent material
- Prior art date
Links
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
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- 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
- B01D53/38—Removing components of undefined structure
- B01D53/42—Basic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/60—Heavy metals; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/60—Sorption with dry devices, e.g. beds
Definitions
- the invention relates to a method and a device for separating vaporous alkali and heavy metal compounds from hot combustion gases using sorbent material.
- combustion gases are generated at lower temperatures, for example in a pressure-charged fluidized bed furnace at temperatures below 900 ° C.
- the combustion gases must be free from ash (dust) and vaporous alkali and heavy metal compounds.
- the object of the invention is to make the sorption process more efficient.
- the method according to the invention is characterized in that the hot combustion gases are passed over and through at least one filler made of sorbent material which has a porous structure.
- the porous structure of the packing provides a maximum of sorption area and thus ensures an extremely effective separation. Another significant advantage is that the pressure drop is significantly less than in a fixed bed or fluidized bed.
- the porous structure provides a larger free flow area.
- the invention can be used wherever hot combustion gases, regardless of the way in which they are produced, have to be freed from vaporous alkali metal and heavy metal compounds.
- the flow velocity of the hot combustion gases is preferably 0.1-50 m / sec. It is therefore possible to achieve speeds which were previously not achievable even with the subsequent dedusting of the hot combustion gases.
- the invention also provides a packing for carrying out the method according to the invention, which is characterized in that it consists of sorbent material and has a porous structure. It preferably has a diameter of at least 5 mm.
- a single block-shaped filler for. B. to work with a molecular sieve or monolith.
- all packing shapes can be used, such as balls, pall rings, Raschig rings, saddle bodies, cylinders, honeycombs, plates and any other regular ones or irregular body. Bodies of different sizes and shapes can be mixed with one another. The flow direction is arbitrary in any case.
- Suitable sorbents are Al2O3, SiO2, MgO, ZrO2 Fe2C " 3 or CaO or other known oxide-ceramic materials and mixtures of these components.
- the sorbent material advantageously contains airborne dust from the flue gases of coal furnaces.
- the airborne dust consists of essentially from sorbents in contaminated form.
- the invention also provides a method for producing a packing according to the invention, which is characterized in that particles of sorbent material are processed into a slurry, that combustible material is introduced into the slurry and that the slurry is then shaped, dried and fired becomes. In the last process step, the combustible material burns and leaves the porous structure in the sorbent material.
- Carbon, sawdust, plastic and / or the like is preferably used as the combustible material.
- the porosity of the packing can be controlled via the shape of the combustible material. As a rule, particles of a predetermined size or predetermined size distribution will be mixed into the slurry. However, there is also the preferred possibility of using the combustible material in the form of a fiber sponge. Then foam-like ceramic parts are created. This method is particularly useful when working with a single filler body of appropriate size.
- Airborne dust accumulates in sufficient quantities without manufacturing effort and consists essentially of sorbent material.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4420839.1 | 1994-06-15 | ||
DE19944420839 DE4420839A1 (de) | 1994-06-15 | 1994-06-15 | Verfahren und Vorrichtung zum Abscheiden von dampfförmigen Alkali- und Schwermetallverbindungen aus heißen Verbrennungsgasen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995034369A1 true WO1995034369A1 (de) | 1995-12-21 |
Family
ID=6520603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/001345 WO1995034369A1 (de) | 1994-06-15 | 1995-04-12 | Verfahren und vorrichtung zum abscheiden von dampfförmigen alkali- und schwermetallverbindungen aus heissen verbrennungsgasen |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE4420839A1 (de) |
WO (1) | WO1995034369A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2958181B1 (fr) * | 2010-04-06 | 2014-09-05 | Inst Francais Du Petrole | Procede permettant l'elimination des oxydes alcalins en phase gazeuse |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2728692A1 (de) * | 1976-08-19 | 1978-02-23 | Dowa Mining Co | Verfahren zur entfernung von quecksilberhaltigen verunreinigungen in gasen |
US4440867A (en) * | 1982-05-14 | 1984-04-03 | Ensotech, Inc. | Calcined, high surface area, particulate matter, processes using this matter, and admixtures with other agents |
JPS60137813A (ja) * | 1983-12-26 | 1985-07-22 | Agency Of Ind Science & Technol | 微細多孔質粘土材料の製造法 |
WO1985004862A1 (en) * | 1984-04-19 | 1985-11-07 | Effem Gmbh | High porosity body used for adsorption or absorption purposes, particularly for animal litters, method for producing it and utilization thereof |
US4867955A (en) * | 1988-06-27 | 1989-09-19 | Detroit Stoker Company | Method of desulfurizing combustion gases |
EP0436124A2 (de) * | 1990-01-05 | 1991-07-10 | H. Diekmann Gmbh & Co. KG | Filterkörper und Verfahren zur Herstellung eines Filterkörpers |
EP0487913A1 (de) * | 1990-10-29 | 1992-06-03 | Walhalla-Kalk Entwicklungs- und Vertriebsgesellschaft mbH | Hochreaktive Reagentien und Zusammensetzungen für die Abgas- und Abwasserreinigung, ihre Herstellung und ihre Verwendung |
DE4140969A1 (de) * | 1991-12-12 | 1993-06-17 | Werner Prof Dr Weisweiler | Verfahren zur abtrennung und gewinnung von quecksilber und quecksilberverbindungen aus gasen |
EP0555921A1 (de) * | 1992-02-10 | 1993-08-18 | Etienne Vansant | Produkte, Verfahren und Vorrichtungen zur Abscheidung von Verunreinigungen aus Fluiden |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE579885C (de) * | 1930-12-05 | 1933-07-05 | Metallgesellschaft Akt Ges | Fuellmaterial fuer Tuerme, Gaswaescher, Kolonnen o. dgl. |
DE2355498C3 (de) * | 1973-11-07 | 1979-08-30 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Herstellung eines schwammartigen keramischen Körpers |
CH646125A5 (de) * | 1980-07-25 | 1984-11-15 | Jan Grochol | Verfahren zur herstellung eines keramischen kontaktkoerpers und nach dem verfahren hergestellter kontaktkoerper. |
DE3715046A1 (de) * | 1987-05-06 | 1988-11-17 | Kernforschungsz Karlsruhe | Verfahren zur rueckhaltung von quecksilber aus rauchgasen einer verbrennungsanlage |
DE3926574A1 (de) * | 1989-08-11 | 1991-02-14 | Metallgesellschaft Ag | Verfahren zur abscheidung von alkali- und schwermetallverbindungen aus heissen gasen |
-
1994
- 1994-06-15 DE DE19944420839 patent/DE4420839A1/de not_active Withdrawn
-
1995
- 1995-04-12 WO PCT/EP1995/001345 patent/WO1995034369A1/de active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2728692A1 (de) * | 1976-08-19 | 1978-02-23 | Dowa Mining Co | Verfahren zur entfernung von quecksilberhaltigen verunreinigungen in gasen |
US4440867A (en) * | 1982-05-14 | 1984-04-03 | Ensotech, Inc. | Calcined, high surface area, particulate matter, processes using this matter, and admixtures with other agents |
JPS60137813A (ja) * | 1983-12-26 | 1985-07-22 | Agency Of Ind Science & Technol | 微細多孔質粘土材料の製造法 |
WO1985004862A1 (en) * | 1984-04-19 | 1985-11-07 | Effem Gmbh | High porosity body used for adsorption or absorption purposes, particularly for animal litters, method for producing it and utilization thereof |
US4867955A (en) * | 1988-06-27 | 1989-09-19 | Detroit Stoker Company | Method of desulfurizing combustion gases |
EP0436124A2 (de) * | 1990-01-05 | 1991-07-10 | H. Diekmann Gmbh & Co. KG | Filterkörper und Verfahren zur Herstellung eines Filterkörpers |
EP0487913A1 (de) * | 1990-10-29 | 1992-06-03 | Walhalla-Kalk Entwicklungs- und Vertriebsgesellschaft mbH | Hochreaktive Reagentien und Zusammensetzungen für die Abgas- und Abwasserreinigung, ihre Herstellung und ihre Verwendung |
DE4140969A1 (de) * | 1991-12-12 | 1993-06-17 | Werner Prof Dr Weisweiler | Verfahren zur abtrennung und gewinnung von quecksilber und quecksilberverbindungen aus gasen |
EP0555921A1 (de) * | 1992-02-10 | 1993-08-18 | Etienne Vansant | Produkte, Verfahren und Vorrichtungen zur Abscheidung von Verunreinigungen aus Fluiden |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 8535, Derwent World Patents Index; Class A81, AN 85-214256 * |
Also Published As
Publication number | Publication date |
---|---|
DE4420839A1 (de) | 1995-12-21 |
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