CN103611406B - The magnetic separating device of sulfur dioxide in flue gas and method - Google Patents
The magnetic separating device of sulfur dioxide in flue gas and method Download PDFInfo
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- CN103611406B CN103611406B CN201310663675.XA CN201310663675A CN103611406B CN 103611406 B CN103611406 B CN 103611406B CN 201310663675 A CN201310663675 A CN 201310663675A CN 103611406 B CN103611406 B CN 103611406B
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Abstract
The invention discloses a kind of magnetic separating device of sulfur dioxide in flue gas, comprise flue gas washing temperature-reducing tower and some groups of magnetic desulfurizer unit, often organize magnetic desulfurizer unit and comprise the force (forcing) pump, mixer, Magneto separate pipe and the centrifuge that connect successively, be divided into just from different levels and concentrated at different levels.By containing in the flue gas of oxysulfide or other industrial waste gas enter Xian Di after flue gas washing temperature-reducing tower, make ° C ~ 52 of the water for cooling to 48 after washing ° C; Water after washing is by entering Magneto separate pipe after force (forcing) pump and mixer; Under the opposition magnetic field disperse function of Magneto separate pipe, sulfuric acid and water are separated to the near-wall of Magneto separate pipe and enrichment, enter centrifuge subsequently.Through multi-stage separation and the low industrial sulphuric acid of concentrated acquisition.Inventive desulfurization is effective, and whole technical process does not use desulfurizing agent; There is no discharge and the pollution problem of the phenomenons such as the incrustation of equipment, blocking, corrosion and wearing and tearing and desulfurizing byproduct, also do not increase CO simultaneously yet
2discharge capacity.
Description
Technical field
The present invention relates to flue gas desulfurization technique field, specifically a kind of device method of the oxysulfide such as sulfur dioxide in separating flue or in other industrial waste gas.
Background technology
The oxysulfides such as the sulfur dioxide in burning institute emission gases or in other industrial waste gas are the main factors forming acid rain, and the living environment of building, soil and the mankind has been arrived in acid rain serious harm; Therefore, must take technological means by its before fume emission except from, this process is referred to as flue gas desulfurization; Current flue gas desulfurization technique has tens kinds, but the most ripe be that wet fuel gas desulfurizing technology flow process, form and mechanism are similar, mainly use lime stone (CaCO
3), lime (CaO) or sodium carbonate (Na
2cO
3) etc. slurries make desulfurizing agent, in reaction tower, flue gas is washed, thus removing flue gas in SO
2; This technique has the history of 50 years, and after constantly Improvement and perfection, Technical comparing is ripe, has desulfuration efficiency high (90% ~ 98%), and unit capacity is large, and coal adaptability is strong, and operating cost lower and byproduct such as easily to reclaim at the advantage; Countries in the world (as China, the U.S., Germany, Japan etc.) are in large thermal power plant, more than 90% adopts wet type lime/lime stone-gypsum method flue gas desulfurization technique flow process, but the defect that lime/lime stone technique has it potential, main manifestations is the incrustation of equipment, blocking, corrosion and wearing and tearing, and increases CO
2discharge capacity, desulfurizing byproduct---desulfurated plaster also needs to fully utilize again, otherwise pollutes the environment; Therefore, need to innovate existing flue gas desulfurization technique, provide can overcome above-mentioned shortcoming, the technique of the oxysulfide such as sulfur dioxide and device in efficient separating flue or in other industrial waste gas.
Summary of the invention
The technical problem to be solved in the present invention is to provide one and does not use lime stone (CaCO
3), lime (CaO) or sodium carbonate (Na
2cO
3) etc. the magnetic separating device of sulfur dioxide in flue gas of desulfurizing agent.
For solving above technical problem, the following technical scheme that the present invention adopts.
A kind of magnetic separating device of sulfur dioxide in flue gas, comprise flue gas washing temperature-reducing tower and some groups of magnetic desulfurizer unit, often organize magnetic desulfurizer unit and comprise the force (forcing) pump, mixer, Magneto separate pipe and the centrifuge that connect successively, wherein, force (forcing) pump connects flue gas washing temperature-reducing tower, Magneto separate pipe is made up of nonmagnetic material, and the multiple ndfeb magnet of radial evenly embedding on the tube wall of Magneto separate pipe, the center line of the same pole of all magnetic patch comes together in the center of circle of Magneto separate pipe.
As preferred technical scheme, the residual magnetic flux density of ndfeb magnet is 1.1T ~ 1.3T.
As preferred technical scheme, the interior diameter of Magneto separate pipe is 200 ㎜ ~ 300 ㎜.
As preferred technical scheme, the length of Magneto separate pipe is 10-15 times of its interior diameter.
As preferred technical scheme, described magnetic desulfurizer unit is divided into just from different levels and concentrated at different levels, concentrates at different levels being connected to just from rear portion at different levels.
As preferred technical scheme, described each device interior concentrated at different levels is equipped with anticorrosive PTFE coating.
The present invention also provides a kind of magnetism separate method making the sulfur dioxide in flue gas of the said equipment, the method is by containing in the flue gas of oxysulfide or after other industrial waste gas enters flue gas washing temperature-reducing tower, through gas scrubbing process, make the oxysulfide in gas water-soluble, and make ° C ~ 52 of the water for cooling to 48 after washing ° C; Water after washing is by entering Magneto separate pipe after force (forcing) pump and mixer; Under the opposition magnetic field disperse function of Magneto separate pipe, sulfuric acid and water are separated to the near-wall of Magneto separate pipe and enrichment, enter centrifuge subsequently, under the centrifugal motion effect of centrifuge, the sulfuric acid of boundary layer is separated, through multi-stage separation and the low industrial sulphuric acid of concentrated acquisition.
The oxysulfide such as sulfur dioxide in flue gas or in other industrial waste gas can be separated by the present invention efficiently, and desulfurized effect is good, and desulfurization degree reaches more than 90%, and is condensed into industrial low sulfuric acid, and whole technical process does not use lime stone (CaCO
3), lime (CaO) or sodium carbonate (Na
2cO
3) etc. desulfurizing agent; There is no discharge and the pollution problem of the phenomenons such as the incrustation of equipment, blocking, corrosion and wearing and tearing and desulfurizing byproduct, also do not increase CO simultaneously yet
2discharge capacity is the flue gas desulphurization system apparatus and method that a kind of cost performance is very high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of present system device and technological process.
Fig. 2 is Magneto separate pipe profile of the present invention.
In figure, 1-flue gas washing temperature-reducing tower, 2-force (forcing) pump, 3-mixer, 4-Magneto separate pipe, 5-centrifuge, 6-ndfeb magnet, 7-circulating water pipe, C1-is first from one-level, and C2-is first from secondary, and C3-is just from three grades, and N1-concentrates one-level, and N2-concentrates secondary, concentrated three grades of N3-.
Detailed description of the invention
In order to make those skilled in the art better understand the present invention, below in conjunction with accompanying drawing, explanation clear, complete is further done to the present invention.
The magnetic separating device of a kind of sulfur dioxide in flue gas of the present invention, comprise flue gas washing temperature-reducing tower 1 and some groups of magnetic desulfurizer unit, often organize magnetic desulfurizer unit and comprise the force (forcing) pump 2, mixer 3, Magneto separate pipe 4 and the centrifuge 5 that connect successively, wherein, force (forcing) pump 2 connects flue gas washing temperature-reducing tower 1, Magneto separate pipe 4 is made up of nonmagnetic material, as copper, aluminium alloy etc., the multiple ndfeb magnet 6 of radial evenly embedding on the tube wall of Magneto separate pipe 4, the center line of the same pole of all magnetic patch 6 comes together in the center of circle of Magneto separate pipe 4.
Flue gas washing temperature-reducing tower 1, pressure pump 2, high-speed continuous mixer and centrifuge 5 are all equipment that is conventional, that meet drainability.
In order to improve Magneto separate effect, following parameter that the present invention is preferred: the residual magnetic flux density of ndfeb magnet 6 is 1.1T ~ 1.3T, the interior diameter of Magneto separate pipe 4 is 200 ㎜ ~ 300 ㎜, the length of Magneto separate pipe 4 is 10-15 times of its interior diameter, and the length of Magneto separate pipe is directly proportional to its interior diameter.
Because each separating effect is limited, whole flue gas desulfurization course needs classification to complete.Magnetic desulfurizer unit is divided into just from different levels and concentrated at different levels, concentrates at different levels being connected to just from rear portion at different levels.As shown in Figure 1, comprise first from one-level C1, first from secondary C2, just from three grades of C3, and concentrated one-level N1, concentrated secondary N2, concentrated three grades of N3.Just from different levels identical with basic structure concentrated at different levels.In order to prevent improving antiseptic property concentrated at different levels, concentrated each device interior at different levels is equipped with anticorrosive PTFE coating.
In flue gas containing oxysulfides such as sulfur dioxide or other industrial waste gas to enter after flue gas washing temperature-reducing tower 1, through gas scrubbing process, make the oxysulfides such as the sulfur dioxide in gas water-soluble, and make ° C ~ 52 of the water for cooling to 48 after washing ° C, otherwise desulfurized effect can be affected; Water after washing is by entering the first Magneto separate pipe 4 from one-level after force (forcing) pump 2 and mixer 3; Because sulfuric acid is strong electrolyte, there is secondary ionization rapidly in water-soluble meeting, produces two hydrogen ions and a sulfate ion; Therefore, the physicochemical properties of these ions and light water is utilized to have very large otherness, under the opposition magnetic field disperse function of Magneto separate pipe 4, sulfuric acid and water are separated to the near-wall of Magneto separate pipe 4 and enrichment, enter centrifuge 5 subsequently, under the centrifugal motion effect of centrifuge 5, the sulfuric acid of boundary layer is separated, through multi-stage separation and the low industrial sulphuric acid of concentrated acquisition.Liquid after concentrated is the industrial sulphuric acid of low concentration, and concentration is 15% ~ 20%; And the water after being separated can return flue gas washing temperature-reducing tower by circulating water pipe 7 and recycles.
Because each separating effect is limited, whole flue gas desulfurization course needs classification to complete, and the water after being separated can recycle, and again enters flue gas washing temperature-reducing tower.The rotating speed of centrifuge controls at 800 revs/min ~ 1000 revs/min, mixer employing continuous high-speed mixer, and rotating speed controls more than 2800 revs/min, ensures that current corkscrew.
The scope of protection of present invention is not limited to above detailed description of the invention; to those skilled in the art; the present invention can have various deformation and change, all in design of the present invention and any amendment, the improvement done within principle be equal to replacement and all should be included within protection scope of the present invention.
Claims (7)
1. the magnetic separating device of a sulfur dioxide in flue gas, it is characterized in that: comprise flue gas washing temperature-reducing tower (1) and some groups of magnetic desulfurizer unit, often organize magnetic desulfurizer unit and comprise the force (forcing) pump (2) connected successively, mixer (3), Magneto separate pipe (4) and centrifuge (5), wherein, force (forcing) pump (2) connects flue gas washing temperature-reducing tower (1), Magneto separate pipe (4) is made up of nonmagnetic material copper or aluminium alloy, the radial evenly multiple ndfeb magnet of embedding (6) on the tube wall of Magneto separate pipe (4), the center line of the same pole of all magnetic patch (6) comes together in the center of circle of Magneto separate pipe (4).
2. device according to claim 1, is characterized in that: the residual magnetic flux density of ndfeb magnet (6) is 1.1T ~ 1.3T.
3. device according to claim 1, is characterized in that: the interior diameter of Magneto separate pipe (4) is 200 ㎜ ~ 300 ㎜.
4. the device according to claim 1,2 or 3, is characterized in that: the length of Magneto separate pipe (4) is 10-15 times of its interior diameter.
5. device according to claim 1, is characterized in that: described magnetic desulfurizer unit is divided into just from different levels and concentrated at different levels, concentrates at different levels being connected to just from rear portion at different levels.
6. device according to claim 5, is characterized in that: described each device interior concentrated at different levels is equipped with anticorrosive PTFE coating.
7. the magnetism separate method of a sulfur dioxide in flue gas, it is characterized in that: after the flue gas containing oxysulfide or other industrial waste gas enter flue gas washing temperature-reducing tower (1), through gas scrubbing process, make the oxysulfide in gas water-soluble, and make ° C ~ 52 of the water for cooling to 48 after washing ° C; Water after washing is by entering Magneto separate pipe (4) after force (forcing) pump (2) and mixer (3); Under the opposition magnetic field disperse function of Magneto separate pipe (4), sulfuric acid and water are separated to the near-wall of Magneto separate pipe (4) and enrichment, enter centrifuge (5) subsequently, under the centrifugal motion effect of centrifuge (5), the sulfuric acid of boundary layer is separated, through multi-stage separation and the low industrial sulphuric acid of concentrated acquisition.
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| CN201310663675.XA CN103611406B (en) | 2013-12-10 | 2013-12-10 | The magnetic separating device of sulfur dioxide in flue gas and method |
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| CN201310663675.XA CN103611406B (en) | 2013-12-10 | 2013-12-10 | The magnetic separating device of sulfur dioxide in flue gas and method |
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| CN103611406B true CN103611406B (en) | 2015-09-02 |
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| CN111763022A (en) * | 2019-04-02 | 2020-10-13 | 上海梅山钢铁股份有限公司 | Method for preparing desulfurized gypsum by using dry-process desulfurized fly ash |
| CN113265491A (en) * | 2021-05-28 | 2021-08-17 | 南京甘汁园糖业有限公司 | Method for removing sulfur dioxide in liquid syrup |
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|---|---|---|---|---|
| EP0162536A1 (en) * | 1984-02-20 | 1985-11-27 | Babcock-Hitachi Kabushiki Kaisha | Apparatus for wet type flue gas desulfurization |
| CN102151480A (en) * | 2011-04-29 | 2011-08-17 | 长沙华泰环保设备工程有限公司 | Boiler flue gas desulfurization method and device |
| CN102343211A (en) * | 2011-10-08 | 2012-02-08 | 湖北双环科技股份有限公司 | Method for desulfurizing flue gas of combustion boiler |
| CN103183442A (en) * | 2012-08-31 | 2013-07-03 | 大庆市乾晟机械制造有限公司 | Water treatment technology adopting oil-sludge magnetic separation |
| CN203043828U (en) * | 2013-01-10 | 2013-07-10 | 贵州开磷（集团）有限责任公司 | Sulfur-containing tail gas washing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3924157B2 (en) * | 2001-11-15 | 2007-06-06 | 三菱重工業株式会社 | Flue gas desulfurization system and method |
-
2013
- 2013-12-10 CN CN201310663675.XA patent/CN103611406B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0162536A1 (en) * | 1984-02-20 | 1985-11-27 | Babcock-Hitachi Kabushiki Kaisha | Apparatus for wet type flue gas desulfurization |
| CN102151480A (en) * | 2011-04-29 | 2011-08-17 | 长沙华泰环保设备工程有限公司 | Boiler flue gas desulfurization method and device |
| CN102343211A (en) * | 2011-10-08 | 2012-02-08 | 湖北双环科技股份有限公司 | Method for desulfurizing flue gas of combustion boiler |
| CN103183442A (en) * | 2012-08-31 | 2013-07-03 | 大庆市乾晟机械制造有限公司 | Water treatment technology adopting oil-sludge magnetic separation |
| CN203043828U (en) * | 2013-01-10 | 2013-07-10 | 贵州开磷（集团）有限责任公司 | Sulfur-containing tail gas washing device |
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| CB03 | Change of inventor or designer information |
Inventor after: Shi Xiufeng Inventor after: Wang Jinping Inventor after: Han Lingcui Inventor after: Wu Xu Inventor after: Pan Hanming Inventor after: Zhang Li Inventor after: Ren Qinqin Inventor after: Guo Jianwei Inventor after: Sun Fei Inventor before: Han Lingcui Inventor before: Wu Xu Inventor before: Pan Hanming Inventor before: Zhang Li Inventor before: Ren Qinqin Inventor before: Guo Jianwei Inventor before: Sun Fei |
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Free format text: CORRECT: INVENTOR; FROM: HAN LINGCUI WU XU PAN HANMING ZHANG LI REN QINQIN GUO JIANWEI SUN FEI TO: SHI XIUFENG WANG JINPING HAN LINGCUI WU XU PAN HANMING ZHANG LI REN QINQIN GUO JIANWEI SUN FEI |
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Granted publication date: 20150902 Termination date: 20161210 |