CN1166439C - Process for dusting and dsulfurizing fume - Google Patents
Process for dusting and dsulfurizing fume Download PDFInfo
- Publication number
- CN1166439C CN1166439C CNB001034987A CN00103498A CN1166439C CN 1166439 C CN1166439 C CN 1166439C CN B001034987 A CNB001034987 A CN B001034987A CN 00103498 A CN00103498 A CN 00103498A CN 1166439 C CN1166439 C CN 1166439C
- Authority
- CN
- China
- Prior art keywords
- agent
- flue gas
- present
- lime
- surfactant
- 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.)
- Expired - Fee Related
Links
- 238000010410 dusting Methods 0.000 title claims description 6
- 239000003517 fume Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003546 flue gas Substances 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- 239000003518 caustics Substances 0.000 claims abstract description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 235000015450 Tilia cordata Nutrition 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 206010018987 Haemorrhage Diseases 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 230000000740 bleeding Effects 0.000 claims description 4
- 231100000319 bleeding Toxicity 0.000 claims description 4
- GHNRTXCRBJQVGN-UHFFFAOYSA-N 4-dodecan-6-ylbenzenesulfonic acid Chemical compound CCCCCCC(CCCCC)C1=CC=C(S(O)(=O)=O)C=C1 GHNRTXCRBJQVGN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004111 Potassium silicate Substances 0.000 claims description 3
- NNHHDJVEYQHLHG-UHFFFAOYSA-N Potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- SRAWNDFHGTVUNZ-UHFFFAOYSA-M sodium;3,6-dibutylnaphthalene-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC(CCCC)=CC2=CC(CCCC)=CC=C21 SRAWNDFHGTVUNZ-UHFFFAOYSA-M 0.000 claims description 3
- 229920000388 Polyphosphate Polymers 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 claims description 2
- 239000001205 polyphosphate Substances 0.000 claims description 2
- 235000011176 polyphosphates Nutrition 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 10
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 4
- 239000000920 calcium hydroxide Substances 0.000 abstract description 4
- 235000011116 calcium hydroxide Nutrition 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000007921 spray Substances 0.000 abstract 1
- 230000003009 desulfurizing Effects 0.000 description 9
- 238000006477 desulfuration reaction Methods 0.000 description 8
- 240000006909 Tilia x europaea Species 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000003068 static Effects 0.000 description 1
Abstract
The present invention discloses a dust removing and a desulphurizing method for flue gas, which belongs to the field of environmental protection. The method of the present invention comprises the following steps that (1), flue gas enters to an absorption tower to make a reaction with eliminating agent spray which contains caustic lye of soda, a collecting agent and a surface active agent; (2), milk of lime in right amount is added in the mixed liquid prepared by the reaction in the step (1); (3), the milk of lime is precipitated and filtered; (4), the clear liquid of the sodium hydroxide is recycled. The present invention has the advantages of small occupation area, high dust removal efficiency and no secondary pollution.
Description
The present invention relates to a kind of process for dusting and dsulfurizing fume, belong to field of environment protection.
SO
2Be main atmosphere pollution, once caused a lot of serious air pollution episodes in some countries.Be control SO
2Atmosphere pollution, people have carried out many research work aspect heavy oil desulfurization, and have obtained progress, but these technology do not cost dearly, and are exactly technical also full maturity not, large-scale application to also have many difficulties; Compare, flue gas desulfurization makes fast progress.What use morely at present is the alkali metal method, it is that flue gas and lime liquor are reacted with desulfurization, but it is because of using a large amount of fat limes, so the fixation means investment is big, floor space is big, the lime handling capacity is big, and is on-the-spot messy, easily causes secondary pollutions such as lime dust, in addition, often to the efficiency of dust collection reduction of dust in the flue gas, also caused pollution control not up to standard after the desulfurization, not thorough.The object of the present invention is to provide that a kind of floor space is little, dust removal efficiency is high, the process for dusting and dsulfurizing fume of non-secondary pollution.
The object of the present invention is achieved like this:
A kind of process for dusting and dsulfurizing fume, this method is
(1) flue gas is entered the absorption tower and have an effect, wherein remove collecting agent, and surfactant that agent contains caustic lye of soda, is selected from " any mixing of one or more in waterglass, potassium silicate, the polyphosphate sodium " with removing agent spraying;
(2) in (1) reacted mixed liquor, add an amount of lime slurry;
(3) precipitation, filtration;
(4) the NaOH clear liquid is recycled.
Described surfactant is one or more any mixing in sodium alkyl benzene sulfonate, Nekal BX, peregal 0-20, the bleeding agent.
Described collecting agent, surfactant and the weight ratio that removes water in the agent are 1: 1-2: 10000～1: 1-3: 1000.
Below the present invention is described in detail: (1) remove NaOH in the agent content and add lime slurry amount all with flue gas in SO
2Concentration is relevant, can decide according to the measurement result to flue gas when specifically using.(2) use NaOH as desulfurizing agent, its handling capacity is little, makes that factory's fixation means investment is little, and floor space is few, and non-secondary pollution.(3) this method generates NaOH clear liquid and calcium sulfate precipitation at last, and the NaOH clear liquid can be recycled, and has reduced cost and workload, and calcium sulfate can be made gypsum and use.(4) adopting collecting agent, surfactant dedusting, is to utilize increases such as waterglass, bleeding agent to remove the viscosity and the activity of agent solution, and ion surface has static, thereby dust in flue gas is adsorbed to fall, and has reduced secondary pollution.
The present invention has following advantage than prior art: (1) is because the NaOH that uses is Powdered, and reproducible utilization, thus to fixation means require low, floor space is little; (2) the collecting agent dust removal efficiency height of choosing can reach more than 95%, almost non-secondary pollution.
Introduce two embodiment of the present invention below:
Embodiment one:
With NaOH 27%, water 69.5%, sodium metasilicate 2%, Nekal BX 1.5% composition mixture; Again above solution being joined to make in 90% the water and remove agent, regenerates with milk of lime in PH after the desulfurization＞8.Desulfurization degree almost reaches 100%, and dust removal efficiency reaches 97%.
Embodiment two:
With NaOH 26%, water 70%, potassium silicate 2%, sodium alkyl benzene sulfonate 1%, bleeding agent 1% composition mixture; Above solution being joined in 90% the water, regenerates with milk of lime in PH after the desulfurization＞8 again.Desulfurization degree almost reaches 100%, and dust removal efficiency reaches 97.5%.
Claims (3)
1, a kind of process for dusting and dsulfurizing fume is characterized in that: this method is
(1) flue gas is entered the absorption tower and have an effect, remove wherein that agent contains caustic lye of soda, is selected from waterglass, one or more collecting agent, and the surfactant of any mixing in the potassium silicate, polyphosphate sodium with removing agent spraying;
(2) in (1) reacted mixed liquor, add an amount of lime slurry;
(3) precipitation, filtration;
(4) the NaOH clear liquid is recycled.
2, method according to claim 1 is characterized in that described surfactant is one or more any mixing in sodium alkyl benzene sulfonate, Nekal BX, peregal 0-20, the bleeding agent.
3, method according to claim 1 and 2, the weight ratio that it is characterized in that collecting agent, surfactant and remove water in the agent is 1: 1-2: 10000～1: 1-3: 1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001034987A CN1166439C (en) | 2000-03-15 | 2000-03-15 | Process for dusting and dsulfurizing fume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001034987A CN1166439C (en) | 2000-03-15 | 2000-03-15 | Process for dusting and dsulfurizing fume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1273876A CN1273876A (en) | 2000-11-22 |
| CN1166439C true CN1166439C (en) | 2004-09-15 |
Family
ID=4577031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001034987A Expired - Fee Related CN1166439C (en) | 2000-03-15 | 2000-03-15 | Process for dusting and dsulfurizing fume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1166439C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0915774B1 (en) * | 2008-07-15 | 2019-11-05 | 3 Nine Ab | method for capturing positively or negatively charged airborne pathogens |
| CN101844028B (en) * | 2010-03-02 | 2012-11-28 | 江苏工业学院 | Composite flue gas desulfurization agent and preparation method thereof |
| CN104492203A (en) * | 2014-12-04 | 2015-04-08 | 常州大学 | Gas-liquid-phase medium flue gas dust removal method |
| CN104941577A (en) * | 2015-04-22 | 2015-09-30 | 芜湖市鸿坤汽车零部件有限公司 | Banana peel modified active carbon kieselguhr particles for desulphurization and dust removal and preparation method for banana peel modified active carbon kieselguhr particles |
| CN104923001B (en) * | 2015-06-05 | 2016-08-17 | 北京中晶环境科技股份有限公司 | Dedusting composition, desulfurization compositions and purposes |
-
2000
- 2000-03-15 CN CNB001034987A patent/CN1166439C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1273876A (en) | 2000-11-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040915 Termination date: 20150315 |
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| EXPY | Termination of patent right or utility model |