FI123329B - A method for utilizing ultra-fine ash removers in calcination and incineration processes - Google Patents
A method for utilizing ultra-fine ash removers in calcination and incineration processes Download PDFInfo
- Publication number
- FI123329B FI123329B FI20100278A FI20100278A FI123329B FI 123329 B FI123329 B FI 123329B FI 20100278 A FI20100278 A FI 20100278A FI 20100278 A FI20100278 A FI 20100278A FI 123329 B FI123329 B FI 123329B
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- FI
- Finland
- Prior art keywords
- combustion chamber
- ash
- calcination
- combustion
- substance
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 24
- 238000001354 calcination Methods 0.000 title claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 229910052604 silicate mineral Inorganic materials 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 1
- 239000002737 fuel gas Substances 0.000 claims 1
- 239000013589 supplement Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Classifications
-
- 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
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/001—Calcining
- B01J6/004—Calcining using hot gas streams in which the material is moved
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
Description
MENETELMÄ ULTRAHIENOJEN TUHKAPOISTEIDEN HYÖDYNTÄMISEKSI KALSINOINTI - JA POLTTOPROSESSEISSAMETHOD FOR UTILIZATION OF ULTRA FINE ASH PRINCIPLES IN CALCINATION AND INCINERATION PROCESSES
5 Keksintö kohdistuu menetelmään ultrahienojen tuhkapoisteiden hyödyntämiseksi kal-sinointi- ja polttoprosessissa, jolloin kalsinointiprosessissa kalsoinoivan työkaasun lämpötila nostetaan polttokammiossa yli 500°C lämpötilaan johtamalla polttokammioon primääri-polttoainetta poltettavaksi, polttokammiosta työkaasu johdetaan edelleen polt-tokammion jälkeiseen sekoitustilaan, johon kalsinoitava aine syötetään säiliöstä.The invention relates to a process for utilizing ultra-fine ash removers in a calcining and incineration process, wherein the calcining working gas temperature is increased in the incinerator to above 500 ° C by introducing into the incinerator a primary fuel for combustion, from the incinerator to the fuel.
1010
Keksinnön mukaisessa menetelmässä tyypillisesti energian tuotannossa syntyvistä tuhka-poisteista tehokkaalla pneumaattisella luokituksella erotettua hienofräktiota, joka sisältää hiiltä ja muita palavia aineita, hyödynnetään karbonaatteja tai kidevettä sisältävien mineraalien poltossa/kalsinoinnissa.In the process of the invention, a fine fraction containing carbon and other flammable materials, typically separated from the ash removals from energy production, is utilized in the combustion / calcination of minerals containing carbonates or crystalline water.
1515
Poltto/kalsinointiprosessissa hyödynnetään polttamalla energiaksi ultrahienon tuhkapois-tefraktion sisältämä hiili ja muu palava aine ja näin edellisessä prosessivaiheessa korkeassa lämpötilassa sulassa tilassa käyneet silikaattimineraalit jalostuvat palavien aineiden erityisesti hiilen määrän alenemisen takia vaaleammiksi ja tehokkaammin toimiviksi 2 0 pozzolaanisiksi sementtiä korvaaviksi lopputuotteiksi. Tämän ultrahienon silikaattifrak-tion reaktiivisuus on erittäin suuri ja se vastaa ominaisuuksiltaan lähes teollisesti tuotettuja kaupallisia betoniteollisuuden käyttämiä silikatuotteita.The combustion / calcination process utilizes coal and other combustible material contained in the ultra-fine ash fraction to burn energy and thus silicate minerals that have been subjected to high temperature in the previous process step in the molten state are refined to lighter and more efficiently rendered lighter and more effective. The reactivity of this ultra fine silicate fraction is very high and corresponds almost commercially to the commercially used silica products of the concrete industry.
Palavia aineita, erityisesti hiiltä sisältävän hienofraktion hyödyntäminen karbonaattien tai 2 5 kideveden poistossa pienentää polttoprosessissa tarvittavan primääri energianmäärää lä hes hiilen ja muun palavan aineen sisältämällä energian määrällä. Poltto/kalsinointiprosessi myös kasvattaa palavista aineista puhdistuneen silikaattifrak-tion reaktiivisuutta massayksikköä kohden.The utilization of a fine fraction containing flammable substances, in particular carbon, to remove carbonates or crystalline water reduces the amount of primary energy required in the incineration process by nearly the amount of energy contained in coal and other combustible substances. The combustion / calcination process also increases the reactivity per unit mass of the silicate fraction purified from combustible materials.
3 0 Ultrahienojen tuhkapoisteiden sisältämää energiasisältöä voidaan erityisen tehokkaasti hyödyntää sovellutuksissa, joissa polttoprosessissa palavista aineista lähes täysin vapautuva pozzosilikafraktio tukee tai parantaa varsinaisen poltto/kalsinointiprosessissa tuotettavan tuotteen ominaisuuksia, näitä ovat esimerkiksi: 35 · raakakaoliinin polttaminen metakaoliiniksi. Tässä prosessissa poistetaan kidevettä.3 0 The energy content of ultra-fine ash removers can be particularly effectively utilized in applications where the pozzosilica fraction, which is almost completely released from combustible materials in the incineration process, supports or enhances the properties of the product produced in the actual incineration / calcination process, such as: In this process, crystal water is removed.
2 • Magnesium- tai kalsiumkarbonaatin polttaminen, alennetaan aineen sisältämän karbonaatin määrää.2 • Burning magnesium or calcium carbonate, reducing the amount of carbonate in the substance.
5 Tuhkapoisteet sisältävät yleisesti palamatonta ainetta 5-15 p-%. Hiilen tehollinen lämpöarvo on n. 24 MJ/kg. Kideveden poistaminen raakakaoliini-tonnista vaatii energiaa n.Ash removers generally contain from 5 to 15% by weight of non-combustible material. The effective calorific value of coal is about 24 MJ / kg. The removal of crystalline water per tonne of crude crude requires n.
1 MW ja kaoliinin polttaminen/kalsinointi tapahtuu poistettavan kideveden määrästä riippuen 500-600°C lämpötilassa. Kokeellisesti on todettu, että esimerkiksi sideaine, jossa on 50% metakaoliinia ja 50 % ultrahienoa tuhkapoisteista tuotettua pozzosilikaa 10 toimii erittäin reaktiivisesti betonissa sementtiä korvaavana sideaineena. Prosessoitaessa yhdessä raakakaoliinia ja ultrahienoa tuhkapoistetta, joka sisältää palavaa ainetta, hiiltä n. 10 p-%, saadaan poltossa tarvittavasta energiasta 0,6-0,7 MW ultrahienon tuhkapoisteen sisältämästä hiilestä ja primäärienergian tarpeeksi jää 0,4-0,3 MW. Tämä tarvitaan palamisprosessin häiriöttömäksi ylläpitämiseksi.1 MW and kaolin are burned / calcined at 500-600 ° C depending on the amount of crystal water to be removed. Experimentally, it has been found that, for example, a binder containing 50% metakaolin and 50% ultra-fine pozzosilica produced from ash remover acts very reactively in concrete as a cement substitute. Combined processing of crude kaolin and an ultra-fine ash remover containing about 10 wt.% Of a combustible material, carbon, yields 0.6-0.7 MW of coal-fired energy and 0.4-0.3 MW of primary energy. This is required to keep the combustion process undisturbed.
1515
Prosessissa tarvittava laitteisto ja sen toiminta on kuvattu oheisessa piirroksessa, kuvio 1.The apparatus required for the process and its operation are illustrated in the accompanying drawing, Figure 1.
Kuviossa 1 esitetyssä kaaviollisessa toimintakuvassa ultrahieno tuhkapoiste syötetään säiliöstä 1 pneumaattisesti puhaltimen 8 avulla polttokammioon 4. Poltettava tai kalsi-2 0 noitava aine syötetään säiliöstä 2 pneumaattisesti polttolaitteeseen 10, joka on tässä esimerkissä polttokammion 4 jälkeinen putkisto. Primääri polttoaine, kuten maakaasu tai polttoöljy syötetään säiliöstä 3 polttokammioon 4, jossa se poltetaan yhdessä tuhkapoisteen sisältämän palavan aineen kanssa. Imurin 9 avulla imetään tuotesäiliöstä 5 palokaa-ut pois. Tuotesäiliöön 5 kerätään poltettu/kalsinoitu aine sekä tuhkapoisteesta jäävä pa- 2 5 lamaton aine. Lopputuote johdetaan säilöön 6.In the schematic diagram of Fig. 1, the ultrafine ash discharge is pneumatically fed from the tank 1 by means of a blower 8 to the combustion chamber 4. From the tank 2, the combustible or calcinating agent is fed pneumatically to the combustion apparatus 10. A primary fuel such as natural gas or fuel oil is fed from the tank 3 to the combustion chamber 4 where it is burned together with the combustible material contained in the ash extractor. By means of the vacuum cleaner 9, the combustion chambers are sucked out of the product container 5. The product container 5 collects the burned / calcined material and the unburned material remaining in the ash remover. The final product is placed in storage 6.
Ultrahienosta tuhkapoisteesta voidaan myös yksistään jalostaa teollisia silikalaatuja korvaavia lopputuotteita polttamalla palava-aines siitä pois ylläkuvatulla prosessilla käyttäen tarvittava määrä palavan aineen polttoprosessin tarvitsemaa primäärienergiaa. Tässä rat- 3 0 kaisussa otetaan polttoprosessissa syntyvää lämpöenergiaa polttokammion 4 j a tuotesäi- liön 5 väliin sijoitettavalla lämmönsiirtimellä 11 hyötykäyttöön. Esimerkiksi lämmönsiir-timeltä 11 saatu putkessa 10 kulkevien kuumien palokaasujen lämmitämä ilma johdetaan polttokammion 4 palamisilmaksi. Myös polttoikammioon 4 johdettavien materiaalien lämpötilaa voidaan nostaa lämmönsiirtimeltä tulevan kuuman virtauksen avulla.The ultrafine ash remover can also be used to process industrial silicone grade end products alone by burning the combustible material out of the process described above using the required amount of primary energy required for the combustion process. In this solution, the heat energy generated in the combustion process is utilized by a heat exchanger 11 located between the combustion chamber 4 and the product container 5. For example, the air heated by the hot combustion gases passing through the tube 10 from the heat exchanger 11 is conducted to the combustion air of the combustion chamber 4. The temperature of the materials fed to the combustion chamber 4 can also be raised by means of a hot flow from the heat exchanger.
3535
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20100278A FI123329B (en) | 2010-07-21 | 2010-07-21 | A method for utilizing ultra-fine ash removers in calcination and incineration processes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20100278A FI123329B (en) | 2010-07-21 | 2010-07-21 | A method for utilizing ultra-fine ash removers in calcination and incineration processes |
| FI20100278 | 2010-07-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI20100278A0 FI20100278A0 (en) | 2010-07-21 |
| FI20100278A FI20100278A (en) | 2012-02-07 |
| FI123329B true FI123329B (en) | 2013-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| FI20100278A FI123329B (en) | 2010-07-21 | 2010-07-21 | A method for utilizing ultra-fine ash removers in calcination and incineration processes |
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| Country | Link |
|---|---|
| FI (1) | FI123329B (en) |
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2010
- 2010-07-21 FI FI20100278A patent/FI123329B/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| FI20100278A0 (en) | 2010-07-21 |
| FI20100278A (en) | 2012-02-07 |
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