DE3037995C2 - - Google Patents
Info
- Publication number
- DE3037995C2 DE3037995C2 DE19803037995 DE3037995A DE3037995C2 DE 3037995 C2 DE3037995 C2 DE 3037995C2 DE 19803037995 DE19803037995 DE 19803037995 DE 3037995 A DE3037995 A DE 3037995A DE 3037995 C2 DE3037995 C2 DE 3037995C2
- Authority
- DE
- Germany
- Prior art keywords
- gas cleaning
- cement
- calcium sulfate
- dry
- wet
- 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
Links
- 238000004140 cleaning Methods 0.000 claims description 6
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000004056 waste incineration Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 3
- 239000004566 building material Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 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
- B01D53/48—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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/12—Acids or salts thereof containing halogen in the anion
- C04B22/124—Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (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)
- Processing Of Solid Wastes (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Einsatz von Rück standsprodukten aus der Gasreinigung, vorzugsweise hinter Müllverbrennungsanlagen, wobei die Gasreinigung naß- oder trockenchemisch auf Kalkbasis durchgeführt wird und naß oder trocken anfallendem Calciumsulfat-Dihydrat bis 10 Gew.-% Zement zugemischt sind. Ein solches Verfahren ist aus der DE-OS 28 03 764 bekannt.The invention relates to a method for using re stand products from gas cleaning, preferably behind Waste incineration plants, the gas cleaning wet or is carried out dry-chemically on a lime basis and wet or dry calcium sulfate dihydrate to 10% by weight of cement are mixed. Such a process is known from DE-OS 28 03 764.
Das meistgebrauchte Gasreinigungs-Verfahren ist gekenn zeichnet durch eine Waschung mit Kalk oder in neuerer Zeit vielfach auch durch einen trockenchemischen Prozeß, in dem Kalkhydrat oder ähnliche Stoffe einer Kontaktstrecke und einem Filter zugeführt werden oder auch einer Sprühtrocken anlage, durch die das Gas zwangsgeführt wird.The most commonly used gas cleaning process is known is characterized by a wash with lime or more recently often also through a dry chemical process in which Hydrated lime or similar substances in a contact section and a filter or a spray dry system through which the gas is forced.
Bei diesem Prozeß entsteht ein Gemisch von CaSO4, CaSO3 und Salzen.This process creates a mixture of CaSO 4 , CaSO 3 and salts.
Es wurden viele Versuche durchgeführt, um dieses Rückstands produkt deponiefreundlich oder sogar als Baustoff zu wan deln. Many attempts have been made to remove this residue product to landfill friendly or even as a building material deln.
Die Weiterverarbeitung von Calciumsulfat-Dihydrat zu ge branntem Gips ist vom Energiebedarf abhängig und somit bei dem sehr hohen Wassergehalt wirtschaftlich vielfach nicht durchführbar.The processing of calcium sulfate dihydrate to ge burnt gypsum depends on the energy requirement and therefore economically in many cases due to the very high water content not feasible.
Es wird daher erfindungsgemäß vorgeschlagen, 20-40% Calciumsulfat-Dihydrat, mit 20-40% Rotschlamm, der als Abfallprodukt bei der Aluminiumerzeugung anfällt, mit 5-10% Zement, mit Anteilen von Tonen oder Kies als Füllstoffe und 5-10% Calciumchlorid aus dem Waschwasser der Gasreinigung zu mi schen.It is therefore proposed according to the invention, 20-40% Calcium sulfate dihydrate, with 20-40% red mud, which as Waste product from aluminum production occurs with 5-10% cement, with parts of clays or gravel as fillers and 5-10% calcium chloride from the scrubbing water to mi .
Die Mischung kann geformt und anschließend unter natürlichen Verhältnissen ohne Wärmezuführung aus dem Energiebereich getrocknet werden, wodurch ein festes Ma terial gefunden wurde, das bis über 200 kp Festigkeit pro cm2 aufweist.The mixture can be shaped and then dried under natural conditions without the addition of heat from the energy range, as a result of which a solid material has been found which has a strength of more than 200 kg per cm 2 .
Das Calciumchlorid, das zur Verfestigung des Gemischma terials dient, wird dem Waschwasser der Gaswäsche entnom men.The calcium chloride, which solidifies the mixture terials, is removed from the wash water of the gas scrubber men.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803037995 DE3037995A1 (en) | 1980-10-08 | 1980-10-08 | Using gypsum from gas purificn. - by mixing with red mud, cement and calcium chloride, giving solid suitable for building material or dumping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803037995 DE3037995A1 (en) | 1980-10-08 | 1980-10-08 | Using gypsum from gas purificn. - by mixing with red mud, cement and calcium chloride, giving solid suitable for building material or dumping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3037995A1 DE3037995A1 (en) | 1982-08-19 |
| DE3037995C2 true DE3037995C2 (en) | 1987-08-13 |
Family
ID=6113913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803037995 Granted DE3037995A1 (en) | 1980-10-08 | 1980-10-08 | Using gypsum from gas purificn. - by mixing with red mud, cement and calcium chloride, giving solid suitable for building material or dumping |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3037995A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002832A (en) * | 2019-04-18 | 2019-07-12 | 四川蓝鼎新材料有限公司 | Gypsum mortar production technology based on desulfurization gypsum powder |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1000916A3 (en) * | 1987-10-07 | 1989-05-16 | Claywing Builders Ltd Trading | Treating solid. semi-solid or liq. toxic waste - by mixing with fly ash, calcium chloride, bentonite and opt. water to form a slurry and allowing to harden |
| DE4129488A1 (en) * | 1991-09-05 | 1993-03-11 | Vaw Ver Aluminium Werke Ag | PROCESS FOR TRANSFERRING ELECTRICITY-BASED RESIDUES FROM COMBUSTION FACILITIES TO A SOLID, UNPARALLELY DEPONABLE FORM |
| DE4430446A1 (en) * | 1994-08-27 | 1995-03-09 | Bilfinger & Berger Umweltverfa | Process for solidification of water-containing red mud |
| WO2017103553A1 (en) * | 2015-12-18 | 2017-06-22 | Red Media Technologies Lmited | Red mud pellets |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2803764C2 (en) * | 1978-01-28 | 1983-02-10 | Saarbergwerke AG, 6600 Saarbrücken | Process for cleaning coal-fired flue gases |
-
1980
- 1980-10-08 DE DE19803037995 patent/DE3037995A1/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002832A (en) * | 2019-04-18 | 2019-07-12 | 四川蓝鼎新材料有限公司 | Gypsum mortar production technology based on desulfurization gypsum powder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3037995A1 (en) | 1982-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8101 | Request for examination as to novelty | ||
| 8105 | Search report available | ||
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |