PL124913B2 - Process for desulfurization of exhaust gases in fluidized bed - Google Patents
Process for desulfurization of exhaust gases in fluidized bed Download PDFInfo
- Publication number
- PL124913B2 PL124913B2 PL22453480A PL22453480A PL124913B2 PL 124913 B2 PL124913 B2 PL 124913B2 PL 22453480 A PL22453480 A PL 22453480A PL 22453480 A PL22453480 A PL 22453480A PL 124913 B2 PL124913 B2 PL 124913B2
- Authority
- PL
- Poland
- Prior art keywords
- fluidized bed
- desulfurization
- exhaust gases
- sorbent
- fluidized
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000006477 desulfuration reaction Methods 0.000 title claims 2
- 230000023556 desulfurization Effects 0.000 title claims 2
- 239000007789 gas Substances 0.000 title description 6
- 239000002594 sorbent Substances 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 239000006028 limestone Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Description
Opis patentowy opublikowano: 31.01.1984 C 4. ; : t L N I A U ?ciu Patentowego FM- t, I*"'W II Lc^Nll Twórcywynalazku: Stanislaw Kandefer, Elzbieta Maria Bulewicz, Krystyna Wieczorek-Ciurowa, Elzbieta Janicka, Czeslawa Jurys Uprawniony z patentu tymczasowego: Politechnika Krakowska, Kraków (Polska) Sposób odsiarczania gazów spalinowych w zlozu fluidalnym Sposób odsiarczania gazów spalinowych w zlozu fluidalnym metoda sucha.W dotychczas znanych rozwiazaniach fluidalnego spalania wegli w temperaturach 750-900°C Jako sorbentów SO2 uzywa sie naturalnych wapieni lub dolomitów. Dla osiagniecia 86,5% poziomu odsiarczania gazów wymagany jest stosunek molowy Ca : S = 3 :1.Niedogodnoscia stosowania jako sorbentów wapieni lub dolomitówjest koniecznosc eksploa¬ tacji zlóz wapiennych, a takze wymagane ich duze ilosci, co wplywa na zwiekszenie masy stalych odpadów z paleniska.Celem wynalazku jest usuniecie tych niedogodnosci przez opracowanie sposobu odsiarczania gazów spalinowych pozwalajacego na utylizacje odpadów wapiennych pochodzacych z wytwornic acetylenowych oraz na zmniejszenie ilosci sorbentu wprowadzonego do zloza fluidalnego.Istota wynalazku polega na wprowadzeniu podczas fluidalnego spalania wegla lub innych paliw w temperaturze 750-900°C sorbentu w postaci wapnia pokarbidowego w ilosci zapewniajacej stosunek molowy Ca:S w przedziale 1,5:1 do 1:1. Wapno pokarbidowane wykazuje wieksza efektywnosc sorpcyjna niz surowe mineraly wapienne.Sposób odsiarczania wedlug wynalazku pozwala na uzyskanie minimum 95% odsiarczenia gazów.Przyklad. Odsiarczanie gazów spalinowych zachodzi bezposrednio w laboratoryjnym pale¬ nisku fluidalnym, które stanowi rura kwarcowa o srednicy 96 mm, z klasycznym dnem sitowym.Spalanie zasiarczonego wegla odbywa sie w zlozu balastowanym piaskiem, do którego wprowadza sie w sposób ciagly wegiel o uziarnieniu 0,5-1,0 mm wymieszany z odpadowym wapnem pokarbi- dowym w stosunku molowych Ca: S w zakresie 1:1. Uziarnienie sorbentu jest równe 0,5-0,6 mm.Proces odbywa sie w temperaturze 845 ± 15°C, stezenie tlenu w gazach wylotowych wynosi okolo 4%. Sklad gazów spalinowych analizuje sie w sposób ciagly. Poziom odsiarczania gazów liczony wzgledem stezenia S02 w gazach spalinowych przed dodaniem sorbentu ma wartosc conajmniej 95%.2 124913 PLThe patent description was published: 31.01.1984 C 4.; : t LNIAU? ciu Patentowego FM- t, I * "'In II Lc ^ Nll Creators of the invention: Stanislaw Kandefer, Elzbieta Maria Bulewicz, Krystyna Wieczorek-Ciurowa, Elzbieta Janicka, Czeslawa Jurys Authorized by temporary patent: Cracow University of Technology, Krakow (Poland) Flue gas desulphurization method in a fluidized bed Dry method for flue gas desulphurization in a fluidized bed. The previously known solutions for fluidized coal combustion at temperatures of 750-900 ° C Natural limestones or dolomites are used as SO2 sorbents. To achieve 86.5% of the gas desulphurization level a molar ratio of Ca: S = 3: 1 is required. The inconvenience of using limestone or dolomite as sorbents is the necessity to exploit the limestone deposits, and also require large amounts of them, which increases the mass of solid waste from the furnace. The aim of the invention is to eliminate these inconveniences by development of a flue gas desulphurization method allowing for the utilization of lime waste from production The essence of the invention consists in introducing, during fluidized combustion of coal or other fuels at a temperature of 750-900 ° C, a sorbent in the form of carbide calcium in an amount ensuring the molar ratio of Ca: S in the range of 1.5: 1 to 1: 1. Carbidated lime has a greater sorption efficiency than raw limestone minerals. The desulphurization method according to the invention allows for a minimum of 95% gas desulphurization. Example. The desulphurization of flue gases takes place directly in a laboratory fluidized furnace, which is a quartz tube with a diameter of 96 mm, with a classic tube sheet. The combustion of sulphated coal takes place in a bed ballasted sand, into which coal is continuously introduced with a grain size of 0.5- 1.0 mm mixed with waste carbohydrate lime in a Ca: S molar ratio in the range of 1: 1. The sorbent grain size is 0.5-0.6 mm. The process takes place at the temperature of 845 ± 15 ° C, the oxygen concentration in the exhaust gases is about 4%. The composition of the exhaust gas is analyzed continuously. The level of desulphurization of gases, calculated on the basis of the concentration of SO2 in the flue gas before the addition of sorbent, is at least 95% .2 124913 EN
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL22453480A PL124913B2 (en) | 1980-05-26 | 1980-05-26 | Process for desulfurization of exhaust gases in fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL22453480A PL124913B2 (en) | 1980-05-26 | 1980-05-26 | Process for desulfurization of exhaust gases in fluidized bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL224534A2 PL224534A2 (en) | 1981-03-27 |
| PL124913B2 true PL124913B2 (en) | 1983-03-31 |
Family
ID=20003314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL22453480A PL124913B2 (en) | 1980-05-26 | 1980-05-26 | Process for desulfurization of exhaust gases in fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL124913B2 (en) |
-
1980
- 1980-05-26 PL PL22453480A patent/PL124913B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL224534A2 (en) | 1981-03-27 |
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