CN202044900U - Mg (OH) 2 size preparing device of magnesium base-seawater marine gas desulfurization system - Google Patents
Mg (OH) 2 size preparing device of magnesium base-seawater marine gas desulfurization system Download PDFInfo
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- CN202044900U CN202044900U CN2011200405635U CN201120040563U CN202044900U CN 202044900 U CN202044900 U CN 202044900U CN 2011200405635 U CN2011200405635 U CN 2011200405635U CN 201120040563 U CN201120040563 U CN 201120040563U CN 202044900 U CN202044900 U CN 202044900U
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- seawater
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Abstract
An Mg(OH)2 size preparing device of a magnesium base-seawater marine gas desulfurization system mainly comprises a sizing tank, an electric stirring vane, a temperature probe, a flow meter, an electric steam valve, a material inlet, a material outlet, a steam heating pipeline, a condensed water discharge pipe and the like. Magnesia powder, seawater and a dispersing agent are heated at constant temperature and stirred uniformly to be made into the size with the concentration of 10-25% according to quantitative proportion, and then the size is pumped into a desulfurizing tower through a frequency conversion pipeline, so that the desulfurizing aim can be achieved. In the utility model, the seawater can be directly fetched for utilization, the process is simple and convenient, the Mg(OH)2 with smaller grain diameter and more attractive appearance can be manufactured, the problems of scaling, blocking and the like in the gas desulfurization system can be effectively avoided, and the reliability of constant high-efficiency desulfurization can be ensured.
Description
Technical field
The utility model relates to the flue gas desulfurization technique field, refers more particularly to Mg (OH) in magnesium method and the seawater method desulphurization system
2Blank preparation technics.
Background technology
The most successful desulfur technology that reaches commercial Application is a chemical method at present, and with respect to dry method and semidry method, wet desulphurization is used widely with its mature technique.Magnesium base-sea water desulfuration method desulfuration efficiency height, non-secondary pollution, take that volume is little, non-scaling, operating cost be low, considered again simultaneously that seawater obtains easy fresh water on the ship and obtained difficulty, combining the common advantage of desulfurization of magnesium method and the desulfurization of seawater method, is a kind of novelty and sulfur method efficiently.
Existing magnesium method desulfur technology absorbs lime stone gypsum law technology mostly and produces, though the not last magnesian technology of utilizing of optimizing that improves to some extent.Only still there is variety of problems, can not satisfies long-term, the stable specification requirement of user with the pulping system domestic technique.
In order to improve desulfuration efficiency, Mg (OH)
2The activity of slurry becomes a main technological parameter, i.e. Mg (OH)
2The source of desulfurizing agent becomes restriction M﹠amp; The key factor of S flue gas desulfurization law technology development.Chinese patent CN1291588A discloses the calcining of a kind of magnesite and has generated light calcined magnesia, and the light calcined magnesia hydrolysis generates the new technology of magnesium hydroxide, inevitably produces residue during the magnesium hydroxide desulfurizing agent of this explained hereafter.Chinese patent CN1309087 discloses the manufacture method of a kind of magnesium hydroxide and suspension thereof, this method mixed grinding light calcined magnesia in the presence of low amounts of water, and in the presence of certain moisture, powder shape magnesium hydroxide is made in slaking at a certain temperature then.It is wayward and cause hydrolysis insufficient that practical operation finds that magnesia is hydrolyzed into the condition of magnesium hydroxide, causes magnesium hydroxide and sour composition reaction speed slow, and promptly the desulphurization reaction activity is low, can not satisfy high efficiency desulfurization requirement.
To sum up, it is good that this area lacks a kind of reactivity, and the desulfuration efficiency height is effectively avoided problem such as fouling, obstruction in the desulphurization system, and do not have the Mg (OH) of secondary pollution
2The preparation technology of desulfurizing agent.
Summary of the invention
For realizing that magnesium base-seawater method desulfur technology is applied to boats and ships flue gas high-efficiency desulfurization, guarantee desulfurizer reliably and with long-term, operation up to standard, the utility model provides Mg (OH) in a kind of magnesium base-seawater method desulphurization system peculiar to vessel
2The pulp preparation device is prepared highly active Mg (OH)
2Slurry.
Magnesium base-seawater method desulphurization system peculiar to vessel mainly comprises desulfurizing tower, cooled with seawater sprayer unit, slurry tank, multi-stage spray device, seawater, be provided with slurry pool in described desulfurizing tower bottom, slurry pool top is the multi-stage spray device, by oxidation fan aerating oxygen in slurry pool, feed seawater by new water pump in slurry pool, the slurry pool bottom is provided with excavationg pump; Described slurry tank is provided with steam, magnesia powder, seawater pipeline, wherein jet chimney is provided with electronic steam valve, seawater pipeline is provided with the seawater flow meter, be provided with agitator in the slurry tank, slurry tank lower end discharge pipe is provided with the frequency conversion tubing pump, also is provided with the slurry flow meter on the discharge pipe and is connected to the multi-stage spray device; The multi-stage spray device also is connected to slurry pool by spray pump; Boiler smoke enters the cooled with seawater sprayer unit through the smoke discharging pipe that is provided with electric butterfly valve, frequency conversion fan, flue gas flow meter successively, and the cooled with seawater sprayer unit is along the spraying of boiler smoke direction of ventilation, and the boiler smoke through cooling off enters desulfurizing tower; The desulfurizing tower top is provided with demist net and new water spray system, and flue gas enters chimney and discharge from the exhaust opening of desulfurizing tower after handling, and the exhaust opening sidewall is provided with SO
2The analyzer probe; Also be provided with pH meter, float type level gauge in the slurry pool.
Principle of the present utility model is: be equipped with magnesium hydroxide Mg (OH) with magnesia aquation legal system
2Water around magnesia at first adsorbs, reaction forms the magnesium hydroxide crystallite.Add dispersant and can reduce the surface energy effectively, prevent particle agglomeration and grow up that by steric hindrance and Coulomb repulsion effect it is littler to make particle diameter, the Mg (OH) that pattern is better
2, effectively avoided problems such as the fouling in the desulphurization system, obstruction, guarantee to continue the reliability of high-efficiency desulfurization.
The utility model is to be achieved through the following technical solutions: slurry tank is provided with jet chimney, magnesia powder charging aperture, seawater pipeline, wherein jet chimney is provided with electronic steam valve, seawater pipeline is provided with the seawater flow meter, be provided with agitator in the slurry tank, slurry tank lower end discharging opening is provided with the frequency conversion tubing pump; The slurry tank flowmeter cooperates motor-driven valve control seawater quantitatively to be introduced in the slurry tank by seawater pipeline, adds magnesia powder through charging aperture; By different jet chimney heating slurry tank housings and inside, by lower drain port discharged respectively by condensed water for heat steam on the ship; Temp probe immediately monitoring slurry temperature is housed in the slurry tank; The electronic stirring vane mixing speed of agitator is 400r/min.Control steady temperature, mixing speed, the normal pressure optimum hydration condition of curing time are with the legal preparation of magnesia hot water Mg (OH)
2Slurry.
Flowmeter cooperates motor-driven valve control seawater quantitatively to be introduced in the slurry tank by pipeline, adds magnesia powder (magnesium oxide granularity is 200 orders and impure few) through charging aperture, and dropping into seawater and magnesian mass ratio is 8: 2; Utilize on the ship heat steam respectively by different pipelines heating slurry tank housings (sandwich) and inside, condensed water is discharged by lower drain port, heats to guarantee circulation.Temp probe immediately monitoring slurry temperature is housed in the slurry tank, controls the material temperature automatically by attemperating unit and keep 80～90 ℃ of constant temperature.Electronic stirring vane mixing speed is 400r/min.Curing time 2h throws in micro-dispersant more under these conditions, and its quality accounts for 3% of gross mass, and continuing to stir slaking 1h can provide quantitative slurry to spray through the frequency conversion tubing pump to desulfurizing tower spray pipings at different levels by discharging opening output slurry at the bottom of the slurry tank.Slurry quantity delivered and spray flux are fed back electrical apparatus control system control automatically by pH auto-control in the slurry pool and multichannel.
Effect of the present utility model and benefit are preparation Mg (OH)
2Slurry is active high, and it is few to produce residue, not blocking pipe.Directly get seawater and be used, solved marine problem of getting the fresh water difficulty.And make full use of the self-produced steam heating of ship, directly save operating cost.Supply with control by temperature automatic regulating system and slurry, guaranteed high desulfurization efficiency, guarantee M﹠amp peculiar to vessel; S desulfurizer safety, reliable, up to standard operation.
Description of drawings
Below in conjunction with accompanying drawing and concrete embodiment the utility model is further described.
Fig. 1 is magnesium base-seawater method desulphurization system schematic diagram peculiar to vessel.
The structure principle chart of the slurry tank that Fig. 2 the utility model relates to.
Among the figure, 1, desulfurizing tower, 2, slurry tank, 3, chimney, 4, slurry pool, 5, seawater, 6, steam, 7, magnesia powder, 8, new water pump, 9, the seawater flow meter, 10, motor-driven valve, 11, electronic steam valve, 12, frequency conversion tubing pump, 13, the slurry flow meter, 14, spray pump, 15, excavationg pump, 16, waste liquid, 17, oxidation fan, 18, boiler smoke, 19, electric butterfly valve, 20, frequency conversion fan, 21, the flue gas flow meter, 22, handle back gas.
The specific embodiment
Specify the utility model below in conjunction with embodiment.
Real ship is used the Mg (OH) of this device back to preparation on certain container ship
2Percentage is tested.The control liquid-solid ratio is seawater and magnesia quality ratio, hydration temperature, curing time, 4 influence factors of mixing speed, draws the Mg (OH) of preparation according to used MgO breeze composition proportion (reference table 1)
2Percentage also compares, and determines the optimum hydration condition.Test result such as table 2:
Each component content of table 1MgO breeze
| NaOH | SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO |
| 8.49％ | 4.27％ | 0.25％ | 0.75％ | 1.24％ | 85％ |
Table 2 preparation Mg (OH)
2The experiment orthogonal table
(following one page)
By test result as can be seen to Mg (OH)
2The activity influence significance level is A＞C＞B＞D.Solid-to-liquid ratio is to Mg (OH)
2Activity influence is much larger than other three factors.Experiment preferred plan is A1B2C2D3, i.e. solid-to-liquid ratio 8: 2,80 ℃ of hydration temperatures, curing time 2h, mixing speed 400rmin
-1
The utility model is not limited to the foregoing description, and protection domain of the present utility model is all classified in any equivalent concepts or change in the technical scope that the utility model discloses as.
Claims (1)
1. Mg (OH) in magnesium base-seawater method desulphurization system peculiar to vessel
2The pulp preparation device, it is characterized in that: slurry tank (2) is provided with jet chimney, magnesia powder charging aperture, seawater pipeline, wherein jet chimney is provided with electronic steam valve (11), seawater pipeline is provided with seawater flow meter (9), be provided with agitator in the slurry tank, slurry tank lower end discharging opening is provided with frequency conversion tubing pump (12); The slurry tank flowmeter cooperates motor-driven valve control seawater quantitatively to be introduced in the slurry tank by seawater pipeline, adds magnesia powder through charging aperture; By different jet chimney heating slurry tank housings and inside, by lower drain port discharged respectively by condensed water for heat steam on the ship; Temp probe immediately monitoring slurry temperature is housed in the slurry tank; The electronic stirring vane mixing speed of agitator is 400r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200405635U CN202044900U (en) | 2011-02-17 | 2011-02-17 | Mg (OH) 2 size preparing device of magnesium base-seawater marine gas desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200405635U CN202044900U (en) | 2011-02-17 | 2011-02-17 | Mg (OH) 2 size preparing device of magnesium base-seawater marine gas desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202044900U true CN202044900U (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200405635U Expired - Fee Related CN202044900U (en) | 2011-02-17 | 2011-02-17 | Mg (OH) 2 size preparing device of magnesium base-seawater marine gas desulfurization system |
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| Country | Link |
|---|---|
| CN (1) | CN202044900U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| CN110711477A (en) * | 2019-11-28 | 2020-01-21 | 董红彭 | Dry desulfurizing agent for ships, preparation method thereof and dry desulfurizing process for ships |
-
2011
- 2011-02-17 CN CN2011200405635U patent/CN202044900U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| CN110711477A (en) * | 2019-11-28 | 2020-01-21 | 董红彭 | Dry desulfurizing agent for ships, preparation method thereof and dry desulfurizing process for ships |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: WEIHAI PUYI MARINE ENVIRONMENTAL TECHNOLOGY CO.,LTD. Assignor: Dalian Maritime University Contract record no.: 2015210000026 Denomination of utility model: Mg (OH) 2 slurry preparation device for magnesium based sea water method marine desulfurization system Granted publication date: 20111123 License type: Exclusive License Record date: 20150424 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20200217 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: WEIHAI PUYI MARINE ENVIRONMENTAL TECHNOLOGY CO.,LTD. Assignor: Dalian Maritime University Contract record no.: 2015210000026 Date of cancellation: 20221130 |