CA2205995A1 - Method for separating gaseous pollutants from hot process gases - Google Patents
Method for separating gaseous pollutants from hot process gasesInfo
- Publication number
- CA2205995A1 CA2205995A1 CA002205995A CA2205995A CA2205995A1 CA 2205995 A1 CA2205995 A1 CA 2205995A1 CA 002205995 A CA002205995 A CA 002205995A CA 2205995 A CA2205995 A CA 2205995A CA 2205995 A1 CA2205995 A1 CA 2205995A1
- Authority
- CA
- Canada
- Prior art keywords
- process gases
- mixer
- dust
- gaseous pollutants
- gases
- 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.)
- Granted
Links
- 239000007789 gas Substances 0.000 title abstract 6
- 239000003344 environmental pollutant Substances 0.000 title abstract 3
- 231100000719 pollutant Toxicity 0.000 title abstract 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 6
- 239000000428 dust Substances 0.000 abstract 5
- 230000002745 absorbent Effects 0.000 abstract 4
- 239000002250 absorbent Substances 0.000 abstract 4
- 239000000292 calcium oxide Substances 0.000 abstract 3
- 235000012255 calcium oxide Nutrition 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
Hot process gases are passed through a contact reactor (10), in which a particulate absorbent material, which is reactive with gaseous pollutants in the gases, is introduced into the gases to convert the gaseous pollutants into separable dust. The process gases are then passed through a dust separator (5). The major part of the dust separated in the dust separator (5) is passed to a mixer (11), in which it is mixed and moistened, whereupon it is recirculated as absorbent material by being introduced, together with fresh absorbent, into the process gases.
Burnt lime is added as fresh absorbent. The dust is kept so long in the mixer and recirculated so many times that the total residence time of the burnt lime in the mixer in moistened state is sufficiently long for the burnt lime to react substantially completely with water supplied to the mixer and form slaked lime.
Burnt lime is added as fresh absorbent. The dust is kept so long in the mixer and recirculated so many times that the total residence time of the burnt lime in the mixer in moistened state is sufficiently long for the burnt lime to react substantially completely with water supplied to the mixer and form slaked lime.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9404105-0 | 1994-11-28 | ||
| SE9404105A SE504440C2 (en) | 1994-11-28 | 1994-11-28 | Ways to separate gaseous pollutants from hot process gases |
| PCT/SE1995/001403 WO1996016722A1 (en) | 1994-11-28 | 1995-11-24 | Method for separating gaseous pollutants from hot process gases |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2205995A1 true CA2205995A1 (en) | 1996-06-06 |
| CA2205995C CA2205995C (en) | 2006-03-14 |
Family
ID=36095725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002205995A Expired - Fee Related CA2205995C (en) | 1994-11-28 | 1995-11-24 | Method for separating gaseous pollutants from hot process gases |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2205995C (en) |
-
1995
- 1995-11-24 CA CA002205995A patent/CA2205995C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2205995C (en) | 2006-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |