IT1240927B - Process of desulfurization and denitrification of gases containing sulfur dioxide, oxides of nitrogen, oxygen, carbon dioxide and nitrogen, producing ammonium sulfate crystals and elemental sulfur, eliminating the harmful gases to the atmosphere and producing useful products - Google Patents
Process of desulfurization and denitrification of gases containing sulfur dioxide, oxides of nitrogen, oxygen, carbon dioxide and nitrogen, producing ammonium sulfate crystals and elemental sulfur, eliminating the harmful gases to the atmosphere and producing useful productsInfo
- Publication number
- IT1240927B IT1240927B IT5806A IT580690A IT1240927B IT 1240927 B IT1240927 B IT 1240927B IT 5806 A IT5806 A IT 5806A IT 580690 A IT580690 A IT 580690A IT 1240927 B IT1240927 B IT 1240927B
- Authority
- IT
- Italy
- Prior art keywords
- nitrogen
- atmosphere
- producing
- gases
- oxides
- Prior art date
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title abstract 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title abstract 6
- 239000007789 gas Substances 0.000 title abstract 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052757 nitrogen Inorganic materials 0.000 title abstract 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 title abstract 2
- 235000011130 ammonium sulphate Nutrition 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 title 1
- 239000013078 crystal Substances 0.000 title 1
- 238000006477 desulfuration reaction Methods 0.000 title 1
- 230000023556 desulfurization Effects 0.000 title 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract 2
- 229910052717 sulfur Inorganic materials 0.000 abstract 2
- 239000011593 sulfur Substances 0.000 abstract 2
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 229910052569 sulfide mineral Inorganic materials 0.000 abstract 1
- 229910052815 sulfur oxide Inorganic materials 0.000 abstract 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
Combustion of coals and combustible oils containing sulfur and roasting of sulfide minerals produce gases containing sulfur dioxide and oxides of nitrogen that are dispersed into the atmosphere and harm the environment. The patent proposes a process and the resulting plant for elimination of harmful compounds. The gas, passed through at least two absorption towers in countercurrent, encounters ammoniacal gas, which, neutralizing sulfur dioxide, forms ammonium sulfite and bisulfite. The solution obtained is sent to a pressure autoclave where reaction occurs between sulfite and bisulfite in a fixed ratio, producing ammonium sulfate solution and molten sulfur. The products have a purity of at least 99% and the gases sent to the atmosphere suitably meet the legal requirements. <IMAGE>
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT5806A IT1240927B (en) | 1990-06-15 | 1990-06-15 | Process of desulfurization and denitrification of gases containing sulfur dioxide, oxides of nitrogen, oxygen, carbon dioxide and nitrogen, producing ammonium sulfate crystals and elemental sulfur, eliminating the harmful gases to the atmosphere and producing useful products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT5806A IT1240927B (en) | 1990-06-15 | 1990-06-15 | Process of desulfurization and denitrification of gases containing sulfur dioxide, oxides of nitrogen, oxygen, carbon dioxide and nitrogen, producing ammonium sulfate crystals and elemental sulfur, eliminating the harmful gases to the atmosphere and producing useful products |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT9005806A0 IT9005806A0 (en) | 1990-06-15 |
| IT9005806A1 IT9005806A1 (en) | 1991-12-15 |
| IT1240927B true IT1240927B (en) | 1993-12-27 |
Family
ID=11120554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT5806A IT1240927B (en) | 1990-06-15 | 1990-06-15 | Process of desulfurization and denitrification of gases containing sulfur dioxide, oxides of nitrogen, oxygen, carbon dioxide and nitrogen, producing ammonium sulfate crystals and elemental sulfur, eliminating the harmful gases to the atmosphere and producing useful products |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1240927B (en) |
-
1990
- 1990-06-15 IT IT5806A patent/IT1240927B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| IT9005806A0 (en) | 1990-06-15 |
| IT9005806A1 (en) | 1991-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19940317 |