CA2540870A1 - Desulphurization of odorous gases of a pulp mill - Google Patents
Desulphurization of odorous gases of a pulp mill Download PDFInfo
- Publication number
- CA2540870A1 CA2540870A1 CA002540870A CA2540870A CA2540870A1 CA 2540870 A1 CA2540870 A1 CA 2540870A1 CA 002540870 A CA002540870 A CA 002540870A CA 2540870 A CA2540870 A CA 2540870A CA 2540870 A1 CA2540870 A1 CA 2540870A1
- Authority
- CA
- Canada
- Prior art keywords
- combustion
- sulphur
- odorous gases
- claus
- odorous
- 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 claims abstract 35
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical class [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract 29
- 238000000034 method Methods 0.000 claims abstract 28
- 239000005864 Sulphur Substances 0.000 claims abstract 15
- 239000007788 liquid Substances 0.000 claims abstract 3
- 239000007787 solid Substances 0.000 claims abstract 3
- 238000002485 combustion reaction Methods 0.000 claims 45
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 4
- 238000011084 recovery Methods 0.000 claims 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims 3
- 239000004571 lime Substances 0.000 claims 3
- 239000010802 sludge Substances 0.000 claims 3
- 239000000126 substance Substances 0.000 claims 3
- 229910021653 sulphate ion Inorganic materials 0.000 claims 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 238000010411 cooking Methods 0.000 claims 1
- 239000000498 cooling water Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 235000010269 sulphur dioxide Nutrition 0.000 claims 1
- 239000004291 sulphur dioxide Substances 0.000 claims 1
- 235000011149 sulphuric acid Nutrition 0.000 claims 1
- 239000001117 sulphuric acid Substances 0.000 claims 1
- 238000007669 thermal treatment Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 abstract 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
- D21C11/08—Deodorisation ; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/12—Combustion of pulp liquors
- D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
- D21C11/127—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis with post-combustion of the gases
Abstract
The invention relates to a method and an arrangement for the removal of concentrated odorous gases of a pulp mill. According to the method, the concentrated odorous gases containing sulphur compounds are collected from the odorous gases of the sulphite pulp mill and combusted with under air to oxidize the sulphur compounds, so that at least an essential part of the sulphur compounds is oxidized into elemental sulphur. The elemental sulphur is recovered in a liquid or solid form. It can be returned to the process or used in other processes.
Claims (24)
1. A method for the desulphurization of the circulation of chemicals in a sulphate pulp mill, comprising - collecting concentrated odorous gases that contain sulphur compounds and - combusting them to oxidize the sulphur compounds, characterized an that - the concentrated odorous gases are combusted at an air index below one in a first combustion unit, using the Claus process so that at least an essential part of the sulphur compounds are oxidized into elemental sulphur, nonetheless so that at least 10 molar % of the sulphur compounds taken through the Claus system are taken to be combusted in the combustion device of the second combustion unit, and - the elemental sulphur is recovered in liquid or solid form.
2. A method according to claim 1, characterized in that the air index of the combustion is about 0.4- 0.9.
3. A method according to claim 1 or 2, characterized in that the temperature of the combustion is about 1400 to 1800 °C.
4. A method according to claim 1, 2 or 3, characterized in that the desulphurization is integrated into the odorous gas exhaust system of the pulp mill.
5. A method according to any one of the preceding claims, characterized in the sulphur is condensed from the odorous gases after the combustion of the gases.
6. A method according to any one of the preceding claims, characterized in that the water of the boiler or cooling water circulation of the pulp mill is used to condense the sulphur.
7. A method according to any one of the preceding claims, characterized in that part of the collected odorous gases are conducted to Claus combustion and part of the sulphur compounds from the Claus combustion are conducted to conventional odorous gas combustion, or optionally part of the collected odorous gases are conducted directly to conventional odorous gas combustion.
8. A method according to any one of the preceding claims, characterized in that the at least part of the sulphur compounds of the concentrated odorous gases coming from the Claus combustion are conducted to conventional odorous gas combustion.
9. A method according to any one of the preceding claims, characterized in that at least 10 molar % of the sulphur compounds from the Claus combustion are conducted to combustion in conventional combustion systems.
10, A method according to any one of the preceding claims, characterized in that part of the concentrated odorous gases are lead into a first combustion unit, which comprises one or more Claus system combustion devices (10; 20; 21.; 40; 41) and part is lead into the second combustion unit comprising combustion in a soda recovery boiler (3;
53), odorous gas boiler (4; 54), lime sludge reburning kiln (5; 55) or flame (6; 56) or into more than one of these systems.
53), odorous gas boiler (4; 54), lime sludge reburning kiln (5; 55) or flame (6; 56) or into more than one of these systems.
11. A method according to any one of the preceding claims, characterized in that at least molar %, preferably 30 to 90 molar %, of the collected odorous gases are conducted into one or more Claus system combustion devices (10; 20; 21; 40; 41) for combustion.
12. A method according to any one of the preceding claims, characterized in that the collected odorous gases are combusted in the first combustion unit in the Claus system combustion device (10; 20; 21; 40; 41) and the residual fail gases are conducted to the second combustion unit to be combusted in the soda recovery boiler (3; 53), odorous gas boiler (4; 54), Lime sludge reburning kiln (5; 55) or flame (6; 56) or in more than one of these systems.
13. A method according to any one of the preceding claims, characterized in that 50 to 90 molar %, typically 70 to 85 molar %, of the sulphur of the odorous gases lead into the Claus process are combusted to elemental sulphur.
14. A method according to any one of the preceding claims, characterized in that air, oxygen or a mixture thereof is used in the combustion of odorous gases.
15 15. A method according to any one of the preceding claims, characterized in that the elemental sulphur obtained from the Claus process is further combusted to sulphur dioxide or processed to form sulphuric acid.
16. A method according to any one of the preceding claims, characterized in that at least part of the elemental sulphur is fed back into the process, for example, by adding sulphur to white liquor or feeding the sulphur into the soda recovery boiler.
17. A method according to any one of the preceding claims, characterized in that the odorous gases are collected from the source of concentrated odorous gases of a cooking department or an evaporator plant (1; 2) separately or in combination.
18. A method according to any one of the preceding claims, characterized in that the amount of concentrated odorous gases is increased by means of a suitable method, such as thermal treatment of black liquor.
19. The use of the Claus process for the desulphurization of the circulation of chemicals in a sulphate pulp mill, so that the concentrated odorous gases are combusted with substoichiometric amounts of air into elemental sulphur in one or more combustion units of the Claus system and at least 10 molar % of the sulphur compounds taken through the Claus system are taken to be combusted in the combustion device of the at least one second combustion unit.
20. An arrangement for the desulphurization of the circulation of chemicals in a sulphate pulp mill, comprising:
at least one odorous gas combustion unit (10; 20; 21; 40; 41), in which the flow of concentrated odorous gases can be collected and into which it can be conducted from a source of concentrated odorous gases (1, 2) and wherein the reduced sulphur contained in the concentrated odorous gases can be combusted, characterized in that the combustion unit comprises a first combustion unit (10; 20; 21; 40; 41), which has at least one claim system combustion device (10; 20; 21; 40; 41), which is provided with a feed inlet (14; 26; 29; 46; 49), which is connected to the source of concentrated odorous gases (1, 2), and with an exhaust outlet (15; 27; 32; 47; 57), through which the oxidized and condensed sulphur compounds of the concentrated odorous gases can be removed from the device as elemental sulphur in a liquid or solid form, and a second combustion unit, whereby the first unit has an exhaust nozzle (16; 30; 50) for gaseous, uncondensed sulphur compounds, which is connected to the second combustion unit.
at least one odorous gas combustion unit (10; 20; 21; 40; 41), in which the flow of concentrated odorous gases can be collected and into which it can be conducted from a source of concentrated odorous gases (1, 2) and wherein the reduced sulphur contained in the concentrated odorous gases can be combusted, characterized in that the combustion unit comprises a first combustion unit (10; 20; 21; 40; 41), which has at least one claim system combustion device (10; 20; 21; 40; 41), which is provided with a feed inlet (14; 26; 29; 46; 49), which is connected to the source of concentrated odorous gases (1, 2), and with an exhaust outlet (15; 27; 32; 47; 57), through which the oxidized and condensed sulphur compounds of the concentrated odorous gases can be removed from the device as elemental sulphur in a liquid or solid form, and a second combustion unit, whereby the first unit has an exhaust nozzle (16; 30; 50) for gaseous, uncondensed sulphur compounds, which is connected to the second combustion unit.
21. An arrangement according to claim 20, characterized in that the combustion unit comprises at least two Claus system combustion devices (20; 21; 40; 41) connected in series, whereby the first combustion device comprises a combustion assembly (28; 48) for gaseous, uncondensed sulphur compounds, which is connected to the feed nozzles (29; 49) of the second combustion device.
22. An arrangement according to any one of claims 20 to 21, characterized in that the first combustion unit comprises a Claus system combustion device (10; 20; 21; 40;
41) and a condenser (11; 22; 23; 42; 43) therein.
41) and a condenser (11; 22; 23; 42; 43) therein.
23. An arrangement according to any one of claims 20 to 22, characterized in that the second combustion unit comprises a odorous gas boiler (53), soda recovery boiler (54), lime sludge reburning kiln (55) and/or flame (56).
24. An arrangement according to any one of claims 20 to 23, characterized in that the feed nozzle (18; 26; 46) of the first combustion unit is connected to a distribution piece (17; 31;
51) so that part of the concentrated odorous gases can be lead through the distribution piece and past the first combustion unit into the second combustion unit.
51) so that part of the concentrated odorous gases can be lead through the distribution piece and past the first combustion unit into the second combustion unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20031438 | 2003-10-03 | ||
| FI20031438A FI119915B2 (en) | 2003-10-03 | 2003-10-03 | Removal of sulfur from the smell gases of a cellulose factory |
| PCT/FI2004/000581 WO2005033404A1 (en) | 2003-10-03 | 2004-10-04 | Desulphurization of odorous gases of a pulp mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2540870A1 true CA2540870A1 (en) | 2005-04-14 |
| CA2540870C CA2540870C (en) | 2012-12-18 |
Family
ID=29225888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2540870A Expired - Fee Related CA2540870C (en) | 2003-10-03 | 2004-10-04 | Desulphurization of odorous gases of a pulp mill |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20070034344A1 (en) |
| EP (1) | EP1676002A1 (en) |
| CA (1) | CA2540870C (en) |
| FI (1) | FI119915B2 (en) |
| NO (1) | NO20061965L (en) |
| RU (1) | RU2349693C2 (en) |
| WO (1) | WO2005033404A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI123022B (en) | 2007-09-03 | 2012-10-15 | Andritz Oy | Method for treating odor gases in a pulp mill |
| CA2738336C (en) * | 2008-10-22 | 2015-12-29 | Kevin S. Fraser | Method for removing sulfur from a gas stream |
| FI126649B (en) * | 2010-06-07 | 2017-03-31 | Aalto Univ Found | New process for the preparation of microcellulose |
| JP5731858B2 (en) * | 2011-03-09 | 2015-06-10 | ピーエスフォー ルクスコ エスエイアールエルＰＳ４ Ｌｕｘｃｏ Ｓ．ａ．ｒ．ｌ． | Semiconductor device and manufacturing method of semiconductor device |
| US9353476B2 (en) * | 2014-04-18 | 2016-05-31 | Georgia-Pacific Containerboard Llc | Method for recycling waste material with reduced odor emission |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2919976A (en) * | 1956-06-08 | 1960-01-05 | Pan American Petroleum Corp | Conversion of hydrogen sulfide into free sulfur |
| US3525666A (en) * | 1964-08-31 | 1970-08-25 | Mo Och Domsjoe Ab | Process for preparing kraft pulping liquor from black liquor including separate carbonation with combustion gases and evaporation steps |
| US3650888A (en) * | 1970-06-11 | 1972-03-21 | Combustion Eng | Pollution controlled polysulfide recovery process |
| DE3143400A1 (en) * | 1981-11-02 | 1983-06-01 | Mobil Oil Corp., 10017 New York, N.Y. | METHOD FOR REDUCING THE SULFUR CONTENT IN GAS FLOWS WITH ELEMENTAL SULFUR |
| DE3212279C2 (en) | 1982-04-02 | 1985-11-28 | Davy McKee AG, 6000 Frankfurt | Method and device for the combustion of H 2 S-containing gases |
| DE3777861D1 (en) * | 1986-03-07 | 1992-05-07 | Boc Group Plc | TREATMENT OF GASES. |
| NL8901893A (en) * | 1989-07-21 | 1991-02-18 | Veg Gasinstituut Nv | Selective oxidn. catalyst - used to oxidise sulphur cpds. partic. hydrogen sulphide to elemental sulphur |
| FI103532B (en) * | 1994-03-16 | 1999-07-15 | Kvaerner Power Oy | A method for adjusting the S / Na ratio of a sulphate pulp mill |
| US5965100A (en) * | 1995-04-25 | 1999-10-12 | Khanmamedov; Tofik K. | Process for recovery of sulfur from an acid gas stream |
-
2003
- 2003-10-03 FI FI20031438A patent/FI119915B2/en not_active IP Right Cessation
-
2004
- 2004-10-04 RU RU2006111219/12A patent/RU2349693C2/en not_active IP Right Cessation
- 2004-10-04 US US10/574,301 patent/US20070034344A1/en not_active Abandoned
- 2004-10-04 WO PCT/FI2004/000581 patent/WO2005033404A1/en active Search and Examination
- 2004-10-04 EP EP04767095A patent/EP1676002A1/en not_active Withdrawn
- 2004-10-04 CA CA2540870A patent/CA2540870C/en not_active Expired - Fee Related
-
2006
- 2006-05-03 NO NO20061965A patent/NO20061965L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| US20070034344A1 (en) | 2007-02-15 |
| RU2349693C2 (en) | 2009-03-20 |
| FI119915B2 (en) | 2011-06-15 |
| FI119915B (en) | 2009-05-15 |
| RU2006111219A (en) | 2007-11-20 |
| FI20031438A (en) | 2005-04-04 |
| CA2540870C (en) | 2012-12-18 |
| FI20031438A0 (en) | 2003-10-03 |
| WO2005033404A1 (en) | 2005-04-14 |
| EP1676002A1 (en) | 2006-07-05 |
| NO20061965L (en) | 2006-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20141006 |