CN104817129A - Dehydrogenation tank and ballast water treatment system with same - Google Patents
Dehydrogenation tank and ballast water treatment system with same Download PDFInfo
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Abstract
The invention provides a dehydrogenation tank. An atomization spray head is arranged at the center of the upper part of the dehydrogenation tank, and two flow stirring modules are respectively arranged at the middle part and the bottom of the dehydrogenation tank and are used for stirring flowing solutions; each flow stirring module comprises at least two layers of flow stirring meshes. The atomization spray head and the flow stirring modules are arranged in the dehydrogenation tank, so that a TRO solution flowing into the dehydrogenation tank can be fully stirred, hydrogen mixed in the TRO solution is fully and quickly dissipated, and effects of improving the dehydrogenation efficiency and reducing the volume of the dehydrogenation tank are achieved. Furthermore, the invention also provides a ballast water treatment system with the dehydrogenation tank.
Description
Technical field
The present invention relates to ballast for cruising water technology, particularly relate to a kind of dehydrogenation tank and there is its ballast water treatment system.
Background technology
In ship's navigation process, ballast is a kind of inevitable state, and boats and ships are while installing water ballast additional, and local aquatic organism is also loaded in ballast tank thereupon, until after Completion of the Adventure with discharge of ballast water to marine site, point of destination.Water ballast follows boats and ships from a ground to its ground, thus causes the propagation of unwanted aquatic organism and pathogenic agent.For effectively controlling and preventing ballast water for ship from propagating unwanted aquatic organism and pathogenic agent, International Maritime Organizaton (IMO) have passed in 2004 " ballast water for ship and sediment monitoring and management international convention "." pact " specifies that all boats and ships must install ballast water treatment plant as per the schedule, and reviews enforcement to existing vessel." pact ", to the cleanup standard of water ballast, the size of viable biological and quantity, the kind of pathogenic agent microorganism and quantity can make explicit provisions (i.e. D-2 standard).
In current ballast for cruising water technology, branch road electrolytic process is a kind of mainstream technology, its principle of work is, when boats and ships install water ballast additional, from water ballast main line, extract small portion seawater (being about the 1-2% of process seawater amount) enter electrolyzer, electrolysis produces total residual oxide (Total Residual Oxides, TRO) solution (containing clorox) and the byproduct hydrogen gas of a certain amount of high density.TRO solution is mingled with hydrogen and enters dehydrogenation unit, utilize dehydrogenation unit that hydrogen is separated from TRO solution, the hydrogen separated discharges outboard after the Dilution air that gas blower is introduced, then betting in the effect of dosing pump with the TRO solution after Hydrogen Separation is back in water ballast main line, fully mix with seawater wherein, make the TRO concentration in mixed seawater reach certain numerical value, the water quality requirement (D-2 standard) of the ballast water treatment that International Maritime Organizaton (IMO) specifies can be reached.
In above-mentioned electrolytic process treatment technology, hydrogen is a kind of by product certainly led on the negative electrode of electrolyzer.Because hydrogen aerial limits of explosion scope is very wide, be all blast than being easier in the air of 4-75%V/V at density of hydrogen, therefore, hydrogen can not be allowed to enter ballast tank, must separate from TRO solution, and with (below general requirement 1%V/V) below Dilution air to limits of explosion, be then discharged to outboard.In electrolytic process ship ballast water treatment system, the device for hydrogen is separated from TRO solution is called as dehydrogenation unit.
Dehydrogenation unit in electrolytic process ship ballast water treatment system is the key part of ballast water treatment.Dehydrogenation unit has the performance assessment criteria of two aspects: one is hydrogen degassing efficiency, and it is related to the safety of whole ballast water treatment system; Two is volumes of dehydrogenation unit, and the volume of dehydrogenation unit is general all larger, makes the volume of whole ballast water treatment system larger.Above-mentioned two indices is conflicting often, and the dehydrogenation unit that hydrogen degassing efficiency is high often needs larger volume, and the little dehydrogenation unit of volume often needs to sacrifice some hydrogen degassing efficiencies.Due to the restriction of boats and ships installing space, and the high request to safety performance, in the urgent need to the ballast water treatment system of development safety, miniaturization.For this reason, the key that the little and dehydrogenation unit that efficiency is high of volume just becomes safety, miniaturization ballast water treatment system is developed.
Existing dehydrogenation unit has two classes, the first kind is the hydrogen separation device based on cyclonic separation principle, its advantage is that hydrogen degassing efficiency is higher, shortcoming is that the inlet and outlet pressure of such dehydrogenation technical requirements cyclone separator will keep relative constancy, also require that the fluctuations in discharge scope of cyclone separator is less, that is its application conditions is harsher, and the actual working conditions in real ship application may exceed above-mentioned condition, the effect of cyclone separator is declined greatly, the phenomenon of vapour lock even occurs.Equations of The Second Kind is traditional dehydrogenation tank, its principle of work is, the TRO solution being mingled with hydrogen is injected a tank body, place for some time wherein, make hydrogen wherein assemble and separate out, reach the object of separation, its advantage is reliable, shortcoming is that the volume of required dehydrogenation tank is comparatively large, needs TRO solution to be detained the sufficiently long time wherein, hydrogen wherein just can be made fully to separate.If use less dehydrogenation tank, then can reduce hydrogen degassing efficiency, and be subject to the restriction of boats and ships installing space, bulky dehydrogenation tank often makes the volume of ballast water treatment system comparatively large, is not suitable for the application of real ship.
Summary of the invention
In view of this, the invention provides the little and dehydrogenation tank that hydrogen degassing efficiency is high of a kind of volume and there is the ballast water treatment system of this dehydrogenation tank.
The middle part of dehydrogenation tank provided by the invention is provided with the flow-disturbing module for stirring the solution flow through.
According to one embodiment of present invention, the bottom of described dehydrogenation tank is also provided with the flow-disturbing module for stirring the solution flow through, the flow-disturbing module of in the middle part of described dehydrogenation tank and bottom includes at least one flow-disturbing net, and the mesh size of the flow-disturbing net of described dehydrogenation pot bottom is less than or equal to the mesh size of the flow-disturbing net in the middle part of described dehydrogenation tank.
According to one embodiment of present invention, the mesh size of the flow-disturbing net in the middle part of described dehydrogenation tank is 5*5mm, and the mesh size of the flow-disturbing net of described dehydrogenation pot bottom is 2*2mm.
According to one embodiment of present invention, the flow-disturbing module of in the middle part of described dehydrogenation tank and bottom includes at least two-layer flow-disturbing net and a flow-disturbing net support, and the interlamellar spacing that described flow-disturbing net support keeps 10 ~ 20mm is crossed by described at least two-layer flow-disturbing Netcom.
According to one embodiment of present invention, the center upper portion of described dehydrogenation tank is provided with an atomizer.
According to one embodiment of present invention, described atomizer is 10cm apart from the distance of described dehydrogenation tank top, and the pressure in the injection line of described atomizer is 3-3.5Bar.
Ballast water treatment system provided by the invention, comprise explosion-proof gas blower, air water separator, dehydrogenation tank and dosing pump, described air water separator is connected with the air outlet of described dehydrogenation tank, the air that described explosion-proof gas blower blasts for the mixed gases through described air water separator, described dosing pump is connected with the liquid outlet of described dehydrogenation tank, and the middle part of described dehydrogenation tank and bottom are respectively equipped with the flow-disturbing module for stirring the solution flow through.
According to one embodiment of present invention, two described flow-disturbing modules include at least two-layer flow-disturbing net and a flow-disturbing net support, the interlamellar spacing of described flow-disturbing net support maintenance 10 ~ 20mm is crossed by the flow-disturbing Netcom of each flow-disturbing module, and the mesh size of the flow-disturbing net of described dehydrogenation pot bottom is less than or equal to the mesh size of the flow-disturbing net in the middle part of described dehydrogenation tank.
According to one embodiment of present invention, the center upper portion of described dehydrogenation tank is provided with an atomizer.
According to one embodiment of present invention, described atomizer is 10cm apart from the distance of described dehydrogenation tank top, and the pressure in the injection line of described atomizer is 3-3.5Bar.
The present invention, by arranging flow-disturbing module in dehydrogenation tank, fully can stir the TRO solution flowing into dehydrogenation tank, the hydrogen of its internal mix fully, is fast come out, and reaches and improves effect that hydrogen degassing efficiency reduces dehydrogenation tank volume simultaneously.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technique means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Figure 1 shows that the composition frame chart of ballast water treatment system provided by the invention.
Figure 2 shows that the structural representation of dehydrogenation tank provided by the invention.
Figure 3 shows that the schematic top plan view of flow-disturbing module in Fig. 2.
Figure 4 shows that the schematic front view of flow-disturbing module in Fig. 2.
Embodiment
For further setting forth the present invention for the technique means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, as follows to the detailed description of the invention.
Refer to Fig. 1, ballast water treatment system of the present invention comprises water ballast main line 11, water ballast branch road 18, hydrogen discharging pipe road 19, dosing pipe 13, blow-off line 20, and the ballast pump 1 be positioned on water ballast main line 11 and strainer 2, be positioned at the electrolysis cells 3 on water ballast branch road 18, dehydrogenation tank 6, first valve 21, second valve 22 and the first dosing pump 10, be positioned at the air water separator 5 on hydrogen discharging pipe road 19 and explosion-proof gas blower 4, be positioned at the 3rd valve 23 on dosing pipe 13, 4th valve 24, second dosing pump 12, Y-junction 15 and the first magnetic valve 14, and the second magnetic valve 16 be positioned on blow-off line 20.Wherein, the first valve 21 is all preferably manual valve to the 4th valve 24.
Particularly, ballast pump 1 and strainer 2 are sequentially located on water ballast main line 11.
Electrolysis cells 3 and dehydrogenation tank 6 are sequentially located on water ballast branch road 18, and the tie point of the entrance of water ballast branch road 18 and water ballast main line 11 is positioned at the downstream of strainer 2.
First valve 21 is located on water ballast branch road 18, between water ballast main line 11 and the entrance of electrolysis cells 3.Electrolysis cells 3 is electrically connected with the control unit (not shown) of ballast water treatment system, for electrolytic seawater under the control of the control unit and the mixture of the TRO solution produced containing clorox and hydrogen.
The entrance of dehydrogenation tank 6 is connected with the outlet of electrolysis cells 3.See also Fig. 2 to Fig. 4, dehydrogenation tank 6 is processed by carbon steel, and its volume is about the TRO solution flow of 1 minute (such as, if the flow of TRO solution is 6m
3/ h, then the volume of dehydrogenation tank 6 should be about 100L), diameter and the high ratio of tank body should be advisable with 3:4, and tank body wall thickness is about 3-4mm, and tank interior line with rubber is to prevent the corrosion of TRO solution.The liquid inlet of dehydrogenation tank 6 extends laterally to the center upper portion of dehydrogenation tank 6 through an injection line, an atomizer 7 is provided with at the liquid inlet place of dehydrogenation tank 6, through the atomizing of atomizer 7, entering the hydrogen be mingled with in the TRO solution of dehydrogenation tank 6 can separate out fast from TRO solution.Atomizer 7 is at short transverse distance abhiseca about the 10cm of dehydrogenation tank 6, and in order to ensure atomizing effect, the internal pressure of injection line and atomizer 7 is preferably 3-3.5Bar.TRO solution, after atomizing spray, has removed most of hydrogen, but also can containing a small amount of less bubble.
In order to improve hydrogen degassing efficiency further, remove small bubbles remaining in TRO solution, the present invention is also provided with two flow-disturbing modules 8 (being hereafter called the first flow-disturbing module and the second flow-disturbing module) at the middle part of dehydrogenation tank 6 and bottom.In the present embodiment, these two flow-disturbing modules 8 are stainless (steel) wire combination, and it comprises at least one deck flow-disturbing net 25 separately, and for supporting and fix the flow-disturbing net support 26 of this at least one deck flow-disturbing net 25.In the present embodiment, flow-disturbing net 25 and flow-disturbing net support 26 are all be made up of 316L stainless steel, and each flow-disturbing module 8 includes at least two-layer flow-disturbing net 25, particularly, in the present embodiment, each flow-disturbing module 8 includes three layers of flow-disturbing net 25, and these three layers of flow-disturbing nets 25 are welded and fixed together by flow-disturbing net support 26.The mesh size of the first flow-disturbing module is 5*5mm, the mesh size of the second flow-disturbing module is 2*2mm, each flow-disturbing net support 26 is fixed together the flow-disturbing net 25 of correspondence, and makes the interlamellar spacing keeping 10 ~ 20mm (being preferably 10mm) between flow-disturbing net 25.Understandably, in other embodiments of the invention, the mesh size of the first flow-disturbing module and the second flow-disturbing module also can be other suitable numerical value, as long as the mesh size meeting the first flow-disturbing module is greater than the mesh size of the second flow-disturbing module, and the hydrogen that the first flow-disturbing module and the second flow-disturbing module all can help gathering and separate out in TRO solution.Certainly, in an embodiment of the present invention, the mesh size of the first flow-disturbing module and the second flow-disturbing module also can be equal, and such as mesh size is 5*5mm or is 2*2mm.
Please continue to refer to Fig. 1 and Fig. 2, air water separator 5 to be located on hydrogen discharging pipe road 19 and to be connected with the air outlet set by dehydrogenation tank 6 top.Explosion-proof gas blower 4 is connected with hydrogen discharging pipe road 19, and its air blasted and the gas and vapor permeation through air water separator 5, discharge outboard after below isolated for dehydrogenation tank 6 diluted in hydrogen to limits of explosion.First dosing pump 10 is connected with the liquid outlet be located at bottom dehydrogenation tank 6, and is connected with water ballast main line 11 by the second valve 22, and the TRO solution eliminating hydrogen is injected into the chemical feeding points of water ballast main line 11 by the first dosing pump 10.In addition, the side of dehydrogenation tank 6 is also provided with liquidometer 9, liquidometer 9 can be connected with control unit signal with transporting function, can by the Liquid level in dehydrogenation tank 6 between 1/2 to 3/4 of tank body height by the cooperative cooperating of control unit and liquidometer 9 and the first dosing pump 10.In order to better control the liquid level in dehydrogenation tank 6, the first dosing pump 10 is preferably variable ratio frequency changer dosing pump.
Second dosing pump 12, the 3rd valve 23, the 4th valve 24, Y-junction 15 and the first magnetic valve 14 are located on dosing pipe 13.Dosing pipe 13 is positioned at the downstream of the outlet of water ballast branch road 18 and the tie point of water ballast main line 11 with the tie point of water ballast main line 11.3rd valve 23 near water ballast main line 11, between water ballast main line 11 and the second dosing pump 12.Second dosing pump 12 is between the 3rd valve 23 and the 4th valve 24.First magnetic valve 14 is positioned at the downstream of the 4th valve 24, and between the 4th valve 24 and Y-junction 15.Y-junction 15 is between the first magnetic valve 14 and the sewage draining exit 17 of strainer 2.Second magnetic valve 16 is positioned on blow-off line 20, and connecting tee joint 15 and outboard.
The principle of work of ballast water treatment system of the present invention is: when system is in the process installing water ballast additional, utilize ballast pump 1 that seawater is pressed into strainer 2, after filter 2 filters, much filtrate discharges outboard through the sewage draining exit 17 of filter 2, Y-junction 15 and the second magnetic valve 16, and the seawater after filtering then enters water ballast main line 11.A part of seawater in water ballast main line 11 directly injects ballast tank, another part then enters electrolysis cells 3 electrolysis and produces TRO solution and hydrogen, TRO solution is mingled with hydrogen and enters dehydrogenation tank 6, utilize dehydrogenation tank 6 that hydrogen is separated from TRO solution, and the air mixed introduced with explosion-proof gas blower 4 after air water separator 5 is separated further, dilute after discharge outboard, then under the effect of the first dosing pump 10, noted back water ballast main line 11 with the TRO solution after Hydrogen Separation.When ballast end of processing (namely ballast pump 1 quits work), open the 3rd valve 23, 4th valve 24, first magnetic valve 14 and the second dosing pump 12, and turn off the second magnetic valve 16, extract a certain amount of through filtering from water ballast main line 11 with the second dosing pump 12, the seawater of electrolysis and dehydrogenation, sewage draining exit 17 through filter 2 is injected in strainer 2, after the second dosing pump 12 runs certain hour, 3rd valve 23 of closing the second dosing pump 12 and being connected with the sewage draining exit 17 of strainer 2, 4th valve 24 and the first magnetic valve 14, the seawater of process is made to remain in strainer 2, until ballast next time.
In sum, ballast water treatment system of the present invention at least comprises following advantage:
1. the present invention is by arranging two flow-disturbing modules 8 at the middle part of dehydrogenation tank 6 and bottom, fully can stir the TRO solution flowing into dehydrogenation tank 6, accelerate gathering and the precipitation of hydrogen in TRO solution, the hydrogen mixed in TRO solution fully, is fast come out, reaches and improve effect that hydrogen degassing efficiency reduces dehydrogenation tank 6 volume simultaneously.
2. the present invention is by arranging the different flow-disturbing module 8 of upper and lower two mesh sizes, make the flow-disturbing module 8 of large mesh for being separated larger bubble by TRO solution, the flow-disturbing module 8 of little mesh is for being separated less bubble by TRO solution, make the separation of bubble have stratification, and hydrogen degassing efficiency can be increased further.
3. the present invention is by arranging atomizer 7 in the center upper portion of dehydrogenation tank 6, the hydrogen be mingled with in TRO solution can be made to separate out fast from TRO solution, add hydrogen degassing efficiency.
Finally, the present invention illustrates its effect reached with specific embodiment:
Embodiment one:
A useful capacity be 35000DWT, the specified treatment capacity of Ballast Management system is 1000m
3the bulk cargo carrier of/h is applied dehydrogenation technology of the present invention, the volume of dehydrogenation tank can be made to reduce 55%, and hydrogen degassing efficiency is greater than 99%, and reliable, stable performance, not by the impact that boats and ships working condition changes.
Embodiment two:
Be 2000m in the specified treatment capacity of a 72000DWT, Ballast Management system
3the chemical tanker of/h is applied dehydrogenation technology of the present invention, the volume of dehydrogenation tank can be made to reduce 52%, and hydrogen degassing efficiency is greater than 99%, and reliable, stable performance, not by the impact that boats and ships working condition changes.
Embodiment three:
Be 3000m in the specified treatment capacity of a 180000DWT, Ballast Management system
3the ore-carrier of/h is applied dehydrogenation technology of the present invention, the volume of dehydrogenation tank can be made to reduce 54%, and hydrogen degassing efficiency is greater than 99%, and reliable, stable performance, not by the impact that boats and ships working condition changes.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a dehydrogenation tank, is characterized in that: the middle part of described dehydrogenation tank is provided with the flow-disturbing module for stirring the solution flow through.
2. dehydrogenation tank according to claim 1, it is characterized in that: the bottom of described dehydrogenation tank is also provided with the flow-disturbing module for stirring the solution flow through, the flow-disturbing module of in the middle part of described dehydrogenation tank and bottom includes at least one flow-disturbing net, and the mesh size of the flow-disturbing net of described dehydrogenation pot bottom is less than or equal to the mesh size of the flow-disturbing net in the middle part of described dehydrogenation tank.
3. dehydrogenation tank according to claim 2, is characterized in that: the mesh size of the flow-disturbing net in the middle part of described dehydrogenation tank is 5*5mm, and the mesh size of the flow-disturbing net of described dehydrogenation pot bottom is 2*2mm.
4. dehydrogenation tank according to claim 2, it is characterized in that: the flow-disturbing module of in the middle part of described dehydrogenation tank and bottom includes at least two-layer flow-disturbing net and a flow-disturbing net support, the interlamellar spacing that described flow-disturbing net support keeps 10 ~ 20mm is crossed by described at least two-layer flow-disturbing Netcom.
5. dehydrogenation tank according to claim 1, is characterized in that: the center upper portion of described dehydrogenation tank is provided with an atomizer.
6. dehydrogenation tank according to claim 5, is characterized in that: described atomizer is 10cm apart from the distance of described dehydrogenation tank top, and the pressure in the injection line of described atomizer is 3-3.5Bar.
7. a ballast water treatment system, comprise explosion-proof gas blower, air water separator, dehydrogenation tank and dosing pump, described air water separator is connected with the air outlet of described dehydrogenation tank, the air that described explosion-proof gas blower blasts for the mixed gases through described air water separator, described dosing pump is connected with the liquid outlet of described dehydrogenation tank, it is characterized in that: the middle part of described dehydrogenation tank and bottom are respectively equipped with the flow-disturbing module for stirring the solution flow through.
8. ballast water treatment system according to claim 7, it is characterized in that: two described flow-disturbing modules include at least two-layer flow-disturbing net and a flow-disturbing net support, the interlamellar spacing of described flow-disturbing net support maintenance 10 ~ 20mm is crossed by the flow-disturbing Netcom of each flow-disturbing module, and the mesh size of the flow-disturbing net of described dehydrogenation pot bottom is less than or equal to the mesh size of the flow-disturbing net in the middle part of described dehydrogenation tank.
9. ballast water treatment system according to claim 7, is characterized in that: the center upper portion of described dehydrogenation tank is provided with an atomizer.
10. ballast water treatment system according to claim 9, is characterized in that: described atomizer is 10cm apart from the distance of described dehydrogenation tank top, and the pressure in the injection line of described atomizer is 3-3.5Bar.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/570,359 US10781112B2 (en) | 2015-05-18 | 2015-05-18 | Dehydrogenation tank and ballast water treatment system having the same |
| CN201510250135.8A CN104817129B (en) | 2015-05-18 | 2015-05-18 | A kind of ballast water treatment system except hydrogen tank and with it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510250135.8A CN104817129B (en) | 2015-05-18 | 2015-05-18 | A kind of ballast water treatment system except hydrogen tank and with it |
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| CN104817129A true CN104817129A (en) | 2015-08-05 |
| CN104817129B CN104817129B (en) | 2017-06-20 |
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| WO2016183762A1 (en) * | 2015-05-18 | 2016-11-24 | 青岛双瑞海洋环境工程股份有限公司 | Dehydrogenation tank and ballast water treatment system having same |
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| CN110902771A (en) * | 2019-11-15 | 2020-03-24 | 沪东中华造船(集团)有限公司 | Marine cooling water marine organism prevention treatment system |
| US10781112B2 (en) | 2015-05-18 | 2020-09-22 | Sunrui Marine Environment Engineering Co., Ltd. | Dehydrogenation tank and ballast water treatment system having the same |
| CN112263850A (en) * | 2020-09-30 | 2021-01-26 | 青岛双瑞海洋环境工程股份有限公司 | Gas-liquid separation device for sodium hypochlorite generator |
| US10940930B2 (en) | 2015-05-18 | 2021-03-09 | Sunrui Marine Environment Engineering Co., Ltd. | Online antifouling ship ballast water treatment system and ship ballast water treatment method |
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