CN103007694A - Seawater desulfurization device for tail gas of marine diesel engine - Google Patents
Seawater desulfurization device for tail gas of marine diesel engine Download PDFInfo
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- CN103007694A CN103007694A CN2012105771514A CN201210577151A CN103007694A CN 103007694 A CN103007694 A CN 103007694A CN 2012105771514 A CN2012105771514 A CN 2012105771514A CN 201210577151 A CN201210577151 A CN 201210577151A CN 103007694 A CN103007694 A CN 103007694A
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Abstract
The invention relates to a seawater desulfurization device for tail gas of a marine diesel engine. The seawater desulfurization device comprises a shell, an air flow inlet flange, a tail liquid collecting tank, a tail liquid separator, a uniform air flow distributor, a turbulent flow ball layer, a parallel independent straight-pipe cross flow spraying device, a dehumidification device and an air flow outlet flange, wherein the air flow inlet flange is mounted at the bottom of the shell; the tail liquid collecting tank is mounted inside the shell and is located above the air flow inlet flange; the tail liquid separator is mounted inside the shell and is located above the tail liquid collecting tank; the uniform air flow distributor is mounted inside the shell and is located above the tail liquid separator; the turbulent flow ball layer is mounted inside the shell and is located above the uniform air flow distributor; the parallel independent straight-pipe cross flow spraying device is mounted inside the shell and is located above the turbulent flow ball layer; the dehumidification device is mounted in the shell and is located above the parallel independent straight-pipe cross flow spraying device; and the air flow outlet flange is mounted above the dehumidification device and is located at the top of the shell. According to the seawater desulfurization device, independent straight-pipe-type optimization is carried out on a spraying manner, the height, pressure loss and gas-liquid ratio of the desulfurization device are reduced on the premise of not increasing equipment and operation, and the desulfurization efficiency is effectively improved.
Description
Technical field
The present invention relates to a kind of marine diesel tail gas sea water desulfuration method and device, refer in particular to the independent straight tube cross-current type of a kind of parallel connection spray-turbulence sphere marine diesel tail gas sea water desulfuration method and device, to realize the removal to marine diesel tail gas sulphur oxide.
Background technology
Contain 0.1%～7% sulphur in the bunker oil, because sulfur content is lower, diesel engine sulfureous in flue gas oxide concentration is very low; But common ship's navigation distance, the fuel consumption total amount is large, so the total amount of boats and ships discharging oxysulfide is huge.For preventing that vessel motion from causing sulfur oxides emissions to the pollution of atmosphere, International Maritime Organization (IMO) has formulated MARPOL pact supplemental provisions VI (prevent boats and ships from causing atmosphere pollution rule), wherein stipulated boats and ships must take measures total release with oxysulfide be reduced to 6.0g/ (kwh) or below.If marine diesel tail gas sulfur oxides emissions exceeds standard, its navigation will be subject to MARPOL73/78 pact limit value, cause huge economic loss.For reducing the discharging of vessel motion Sulfur During Process oxide, satisfy the requirement of pact increasingly stringent, it is imperative that the marine diesel tail gas is carried out desulfurization.
In the prior art, at boats and ships the tail gas desulfurizer being installed is to ensure sulfur oxides emissions Main Means up to standard.Seawater desulfurizing process mainly utilizes the alkalescence of seawater oxysulfide to be absorbed fixing, have and build and operating cost is relatively low, do not produce solid waste and mud, desulfurizing tower is difficult for the advantages such as obstruction fouling, the pressure loss be less, stable, technical characterstic meets the basic demand of desulfurizer peculiar to vessel.
The required capital equipment of sea water desulfuration is the absorption tower, present Absorption by Sea Water tower peculiar to vessel adopts spray column and the fixing packed tower structure of filler more, adopt the gas-liquid contact mode of two phase countercurrent flow, the present multinomial patent of this point is all on the books, comprises patent of invention No. 201110177073.4 " seawater desulfurization device of marine tail exhaust-gas treatment system ", patent of invention No. 200810048002.2 " desulfurizing exhaust gas of seagoing vessel method and device " and No. the 200710012371.1st, patent of invention " ship tail gas is carried out the device and method that seawer washing is processed ".Because gas-liquid mass transfer speed is low in the absorption tower of spray column structure, wall stream easily occurs and causes gas-liquid contact insufficient and lose desulfuration efficiency in seawater, needs gas, liquid two-phase to stop the long period in desulfurizer, thereby the huge difficult shipment of tower height; The pressure loss was large when fixedly the packed tower of filler moved in addition, and operation energy consumption is high, the same wall flow phenomenon that easily occurs.This two classes desulfurizer liquid-gas ratio is all larger, and when obtaining 95% desulfuration efficiency, board-like spray column liquid-gas ratio is 10L/m
3, the packed tower liquid-gas ratio is 5.55L/m
3The drawbacks limit such as in sum, the desulfurizing tower height is excessive, the pressure loss is large, liquid-gas ratio is large the application of seawater desulfurization device in the desulfurization of marine diesel tail gas.
The common practice that overcomes defects is that the seawater as sulfur oxide absorbent is carried out upgrading, this technical scheme also has multinomial patent to put down in writing at present, comprise patent of invention CN201210211165.4 number " being used for the electrolysis sea water desulfuration method and apparatus that combustion tail gas peculiar to vessel is processed ", and patent of invention CN201110039565.7 number " magnesium base-seawater method desulfurization system for ship ".But seawater needs to use extra equipment or alkalinity additive in the process of upgrading, the operation relative complex.
Summary of the invention
The purpose of this invention is to provide a kind of marine diesel tail gas seawater desulfurization device, the spray mode is carried out independent straight pipe type optimization, can under the prerequisite that does not increase equipment and operation, reduce desulfurizer height, the pressure loss and gas liquid ratio, Effective Raise desulfuration efficiency.
For achieving the above object, the invention provides a kind of marine diesel tail gas seawater desulfurization device, it comprises shell, be installed in the air flow inlet flange of outer casing bottom, be installed in enclosure and be positioned at the tail washings feeder of air flow inlet flange top, be installed in enclosure and be positioned at the tail washings separator of tail washings feeder top, be installed in enclosure and be positioned at the air-flow even distributor of tail washings separator top, be installed in enclosure and be positioned at the turbulence sphere layer of air-flow even distributor top, be installed in enclosure and be positioned at the in parallel independent straight tube cross-current type spray equipment of turbulence sphere layer top, be installed in enclosure and be positioned at the dehydrating unit of independent straight tube cross-current type spray equipment in parallel top, and be installed in the dehydrating unit top and be positioned at the air stream outlet flange of cover top portion.
Described air flow inlet flange is connected with boats and ships blast pipe flange respectively with the air stream outlet flange, and seawater desulfurization device is accessed in the boats and ships blast pipe.
Described tail washings separator adopts spiral-flow type tail washings separator, is fixedly mounted on by support on the inwall of shell.
The bottom of described turbulence sphere layer is equipped with Under The Grille, and this Under The Grille is between air-flow even distributor and turbulence sphere layer; The top of described turbulence sphere layer is equipped with grid, and grid is between turbulence sphere layer and independent straight tube cross-current type spray equipment in parallel on this.
The independent straight tube cross-current type of described parallel connection spray equipment comprises: the independent straight tube of some parallel connections radially vertically arranges in the shell of seawater desulfurization device respectively, and evenly distributes in the radial section of this seawater desulfurization device; Some seawater pipes, spaced apart up and down, every seawater pipe vertically passes shell, and to introduce seawater desulfurization device inner and vertically pass respectively each independent straight tube to introduce each independent straight tube inner; Some shower nozzles, it is installed in respectively on the every seawater pipe of each independent straight tube inside, forms some grades of spray equipments.
An end that is positioned at housing exterior at every seawater pipe is equipped with the seawater pipe flange, and it is connected with the sea water supply system.
Described shower nozzle is installed downwards perpendicular to the seawater pipe, and is positioned at the place, the cross section center of circle of each independent straight tube; The angular range of the spray angle α of described shower nozzle is 15 °～180 °, is formed the seawater water curtain of conulite or solid conical in independent straight tube inside by the seawater of this shower nozzle ejection.
Described dehydrating unit comprises some spiral-flow type dehumidifiers, is installed in respectively in each independent straight tube, and is positioned at the top of top seawater pipe.
Can between the upper and lower every several spiral-flow type dehumidifiers are set, form some grades of dehydrating units in each independent straight tube.
Described tail washings feeder is around the also inwall setting of covering shell; Shell in described tail washings feeder bottom is provided with the tail washings outlet, is provided with tail washings at an end of this tail washings outlet and discharges flange, is used for external desulfurization tail washings receiving equipment; Between described tail washings outlet and tail washings discharge flange, also be provided with valve.
Marine diesel tail gas seawater desulfurization device provided by the present invention carries out independent straight pipe type optimization to the spray mode, can reduce desulfurizer height, the pressure loss and gas liquid ratio, Effective Raise desulfuration efficiency under the prerequisite that does not increase equipment and operation.
Description of drawings
Fig. 1 is the structural representation of the marine diesel tail gas seawater desulfurization device among the present invention;
Fig. 2 is the schematic layout pattern of the independent straight tube in parallel among the present invention.
The specific embodiment
Below in conjunction with Fig. 1 and Fig. 2, describe a preferred embodiment of the present invention in detail.
As shown in Figure 1, be the structural representation of marine diesel tail gas seawater desulfurization device provided by the present invention.This seawater desulfurization device comprises shell 18, be installed in the air flow inlet flange 1 of shell 18 bottoms, it is inner and be positioned at the tail washings feeder 2 of air flow inlet flange 1 top to be installed in shell 18, it is inner and be positioned at the tail washings separator 6 of tail washings feeder 2 tops to be installed in shell 18, it is inner and be positioned at the air-flow even distributor 8 of tail washings separator 6 tops to be installed in shell 18, it is inner and be positioned at the turbulence sphere layer 10 of air-flow even distributor 8 tops to be installed in shell 18, it is inner and be positioned at the in parallel independent straight tube cross-current type spray equipment of turbulence sphere layer 10 top to be installed in shell 18, it is inner and be positioned at the dehydrating unit of independent straight tube cross-current type spray equipment in parallel top to be installed in shell 18, and is installed in the dehydrating unit top and is positioned at the air stream outlet flange 17 at shell 18 tops.
Described air flow inlet flange 1 is connected with boats and ships blast pipe flange respectively with air stream outlet flange 17, and seawater desulfurization device is accessed in the boats and ships blast pipe.
Described tail washings separator 6 adopts spiral-flow type tail washings separator, is fixedly mounted on by support 7 on the inwall of shell 18.
The bottom of described turbulence sphere layer 10 is equipped with Under The Grille 9, and this Under The Grille 9 is between air-flow even distributor 8 and turbulence sphere layer 10; The top of described turbulence sphere layer 10 is equipped with grid 11, and grid 11 is between turbulence sphere layer 10 and independent straight tube cross-current type spray equipment in parallel on this.
The independent straight tube cross-current type of described parallel connection spray equipment comprises the independent straight tube 12 of some parallel connections, as shown in Figure 2, some described independent straight tubes 12 radially vertically arrange in the shell 18 of seawater desulfurization device, and evenly distribute in the radial section of this seawater desulfurization device.
The independent straight tube cross-current type of described parallel connection spray equipment also comprises some seawater pipes 14, spaced apart up and down, every seawater pipe 14 vertically passes shell 18 and introduces seawater desulfurization device inside and vertically pass respectively each independent straight tube 12 each independent straight tube 12 inside of introducing; An end that is positioned at shell 18 outsides at every seawater pipe 14 is equipped with seawater pipe flange 15, and it is connected with the sea water supply system.
The independent straight tube cross-current type of described parallel connection spray equipment also comprises some shower nozzles 13, and it is installed in respectively on the every seawater pipe 14 of each independent straight tube 12 inside, thereby forms one or more levels spray equipment; This shower nozzle 13 is installed downwards perpendicular to seawater pipe 14, and is positioned at the place, the cross section center of circle of each independent straight tube 12; The angular range of the spray angle α of described shower nozzle 13 is 15 °～180 °, is formed the seawater water curtains 19 of conulite or solid conical in independent straight tube 12 inside by the seawater of these shower nozzle 13 ejections.
Described dehydrating unit comprises some spiral-flow type dehumidifiers 16, is installed in respectively in each independent straight tube 12, and is positioned at the top of top seawater pipe 14.Further, can be between the upper and lower in each independent straight tube 12 every a plurality of spiral-flow type dehumidifiers 16 are set, thereby form multistage dehydrating unit.
Described tail washings feeder 2 is around the also inwall setting of covering shell 18; Shell 18 in described tail washings feeder 2 bottoms is provided with tail washings outlet 3, end at this tail washings outlet 3 is provided with tail washings discharge flange 5, be used for external desulfurization tail washings receiving equipment, between described tail washings outlet 3 and tail washings discharge flange 5, also be provided with valve 4.
Marine diesel tail gas seawater desulfurization device provided by the present invention, its concrete sweetening process and method are as described below.At first, dock air flow inlet flange 1 and air stream outlet flange 17 fixing with boats and ships blast pipe companion flange, so that in the marine diesel tail gas seawater desulfurization device access boats and ships blast pipe, the marine diesel tail gas enters seawater desulfurization device inside by airflow direction shown in Figure 1 by air flow inlet flange 1 place.The marine diesel tail gas at first passes through spiral-flow type tail washings separator 6, drives 6 rotations of spiral-flow type tail washings separator; And further pass through air-flow even distributor 8, so that be about to enter radially evenly the distributing of the coastal water desulfurizer of marine diesel tail gas air-flow of turbulence sphere layer 10.Subsequently, when marine diesel tail gas air-flow enters turbulence sphere layer 10, blow turbulence sphere and between upper grid 9 and Under The Grille 11, carry out turbulent motion, on the turbulence sphere surface mass-transfer progress occurs.Then, marine diesel tail gas air-flow enters respectively each independent straight tube 12, because the external sea water supply of seawater pipe flange 15 system, seawater enters shower nozzle 13 through seawater pipe 14, and sprayed to independent straight tube 12 inwalls by shower nozzle 13 and to form seawater water curtain 19, thereby so that seawater and the marine diesel tail gas air-flow generation mass-transfer progress that passes seawater water curtain 19 are removed the oxysulfide in the marine diesel tail gas air-flow.At last, air-flow carries out dehumidification treatments through spiral-flow type dehumidifier 16, removes the steam in the air-flow after the desulfurization, and is discharged by air stream outlet flange 17 and to enter in the boats and ships blast pipe.
In said process, most of sea water drops with marine diesel tail gas air-flow generation gas-liquid mass transfer moves downward under Action of Gravity Field or forms to lower wall stream and enter turbulence sphere layer 10, the marine diesel tail gas air-flow generation mass-transfer progress on the turbulence sphere surface with follow-up inflow at each independent straight tube 12 inwall.And the fraction sea water drops is entrained in the spiral-flow type dehumidifier 16 by air-flow in addition, and by spiral-flow type dehumidifier 16 separation that from air-flow, dehumidifies, thereby form to lower wall stream and enter the air-flow generation gas-liquid mass transfer of turbulence sphere layer and follow-up inflow at each independent straight tube 12 inwall.Finally, whole sea water drops forms the desulfurization tail washings after downwards through turbulence sphere layer 10, separated from the marine diesel tail gas air-flow of follow-up inflow when the desulfurization tail washings continues to move downward through tail washings separator 6, thus and form to lower wall stream at shell 18 inwalls and to enter tail washings feeder 2.When the desulfurization tail washings liquid level of tail washings feeder 2 interior collections be lower than on the tail washings outlet 3 along the time, valve 4 keeps closing, and prevents that the marine diesel tail gas air-flow of not yet processing through desulfurization of follow-up inflow from spilling from tail washings outlet 3; And when the liquid level of the desulfurization tail washings of tail washings feeder 2 interior collections be higher than on the tail washings outlet 3 along the time, Open valve 4, desulfurization tail washings are expelled to by tail washings from tail washings outlet 3 and discharge the external desulfurization tail washings receiving equipment of flange 5.
In sum, marine diesel tail gas seawater desulfurization device provided by the present invention compared with prior art, has the following advantages and beneficial effect.
1, in the independent straight tube cross-current type of parallel connection spray equipment, tail gas air-flow and seawater cross-flow campaign improve gas-liquid mass transfer speed, have overcome the negative effect of wall stream to desulfuration efficiency, reduce the absorption tower tower height, reduce the pressure loss.
2, in the independent straight tube cross-current type of parallel connection spray equipment, adopt independent straight tube structure, reduce the inhomogeneities that gas-liquid distributes, increase the gas-liquid contact probability, improve desulfuration efficiency.
3, the tail gas air-flow is in running, and the turbulence sphere layer keeps turbulence state, reduces the pressure loss, increases gas-liquid contact probability and time of contact and improved absorption efficiency.
4, dehumidifier and tail washings separator all adopt spiral-flow type, reduce the pressure loss, make the desulfurization tail washings all form wall stream.
5, be provided with in addition tail washings feeder 2, effectively collect the desulfurization tail washings that forms wall stream, simple in structure not fragile; And valve is set to avoid undressed tail gas air-flow to spill from the tail washings outlet.
Therefore, marine diesel tail gas seawater desulfurization device provided by the present invention, desulfuration efficiency is not less than 90%, and the device overall height is not higher than 2m, and the pressure loss is not higher than 300mmHg, and liquid-gas ratio is not higher than 4L/m
3
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a marine diesel tail gas seawater desulfurization device is characterized in that, comprises:
Shell (18);
Be installed in the air flow inlet flange (1) of shell (18) bottom;
It is inner and be positioned at the tail washings feeder (2) of air flow inlet flange (1) top to be installed in shell (18)
It is inner and be positioned at the tail washings separator (6) of tail washings feeder (2) top to be installed in shell (18);
It is inner and be positioned at the air-flow even distributor (8) of tail washings separator (6) top to be installed in shell (18);
It is inner and be positioned at the turbulence sphere layer (10) of air-flow even distributor (8) top to be installed in shell (18);
It is inner and be positioned at the in parallel independent straight tube cross-current type spray equipment of turbulence sphere layer (10) top to be installed in shell (18);
It is inner and be positioned at the dehydrating unit of independent straight tube cross-current type spray equipment in parallel top to be installed in shell (18); And
Be installed in dehydrating unit top and be positioned at the air stream outlet flange (17) at shell (18) top.
2. marine diesel tail gas seawater desulfurization device as claimed in claim 1 is characterized in that, described air flow inlet flange (1) is connected with boats and ships blast pipe flange respectively with air stream outlet flange (17), and seawater desulfurization device is accessed in the boats and ships blast pipe.
3. marine diesel tail gas seawater desulfurization device as claimed in claim 1 is characterized in that, described tail washings separator (6) adopts spiral-flow type tail washings separator, is fixedly mounted on the inwall of shell (18) by support (7).
4. marine diesel tail gas seawater desulfurization device as claimed in claim 1 is characterized in that, the bottom of described turbulence sphere layer (10) is equipped with Under The Grille (9), and this Under The Grille (9) is positioned between air-flow even distributor (8) and the turbulence sphere layer (10); The top of described turbulence sphere layer (10) is equipped with grid (11), and grid on this (11) is positioned between turbulence sphere layer (10) and the independent straight tube cross-current type spray equipment in parallel.
5. marine diesel tail gas seawater desulfurization device as claimed in claim 1 is characterized in that, the independent straight tube cross-current type of described parallel connection spray equipment comprises:
The independent straight tube (12) of some parallel connections radially vertically arranges in the shell (18) of seawater desulfurization device respectively, and evenly distributes in the radial section of this seawater desulfurization device;
Some seawater pipes (14), spaced apart up and down, every seawater pipe (14) vertically passes shell (18) introducing seawater desulfurization device inside and vertically passes respectively each independent straight tube (12) and introduce each independent straight tube (12) inside;
Some shower nozzles (13), it is installed in respectively on the inner every seawater pipe (14) of each independent straight tube (12), forms some grades of spray equipments.
6. marine diesel tail gas seawater desulfurization device as claimed in claim 5 is characterized in that, is positioned at the outside end of shell (18) at every seawater pipe (14) seawater pipe flange (15) is installed, and it is connected with the sea water supply system.
7. marine diesel tail gas seawater desulfurization device as claimed in claim 5 is characterized in that, described shower nozzle (13) is installed downwards perpendicular to seawater pipe (14), and is positioned at the place, the cross section center of circle of each independent straight tube (12); The angular range of the spray angle of described shower nozzle (13) is 15 °～180 °, is formed the seawater water curtain (19) of conulite or solid conical in independent straight tube (12) inside by the seawater of this shower nozzle (13) ejection.
8. marine diesel tail gas seawater desulfurization device as claimed in claim 1 is characterized in that, described dehydrating unit comprises some spiral-flow type dehumidifiers (16), is installed in respectively in each independent straight tube (12), and is positioned at the top of top seawater pipe (14).
9. marine diesel tail gas seawater desulfurization device as claimed in claim 8 is characterized in that, can between the upper and lower every several spiral-flow type dehumidifiers (16) are set, form some grades of dehydrating units in each independent straight tube (12).
10. marine diesel tail gas seawater desulfurization device as claimed in claim 1 is characterized in that, described tail washings feeder (2) is around the also inwall setting of covering shell (18);
Shell (18) in described tail washings feeder (2) bottom is provided with tail washings outlet (3), is provided with tail washings at an end of this tail washings outlet (3) and discharges flange (5), is used for external desulfurization tail washings receiving equipment;
Between described tail washings outlet (3) and tail washings discharge flange (5), also be provided with valve (4).
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| CN201210577151.4A CN103007694B (en) | 2012-12-27 | 2012-12-27 | Seawater desulfurization device for tail gas of marine diesel engine |
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| CN201210577151.4A CN103007694B (en) | 2012-12-27 | 2012-12-27 | Seawater desulfurization device for tail gas of marine diesel engine |
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Cited By (6)
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| CN104703675A (en) * | 2013-04-17 | 2015-06-10 | 富士电机株式会社 | Exhaust gas treatment device, vessel, and exhaust gas treatment method |
| CN109843714A (en) * | 2017-03-24 | 2019-06-04 | 三菱造船株式会社 | The drainage system of ship desulfurizer |
| CN110252096A (en) * | 2019-07-04 | 2019-09-20 | 上海蓝魂环保科技有限公司 | A kind of ship tail gas high efficiency desulphurization plant and its application method |
| CN110665346A (en) * | 2019-10-24 | 2020-01-10 | 张浩博 | High-efficient sweetener of flue gas based on sea water |
| CN111036048A (en) * | 2019-12-24 | 2020-04-21 | 上海海事大学 | Novel ship exhaust gas washing desulfurization device |
| CN116020223A (en) * | 2023-01-06 | 2023-04-28 | 湖北远丰科技发展有限公司 | Kitchen garbage removes flavor and removes dust purifier |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104703675A (en) * | 2013-04-17 | 2015-06-10 | 富士电机株式会社 | Exhaust gas treatment device, vessel, and exhaust gas treatment method |
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| CN109843714B (en) * | 2017-03-24 | 2021-09-24 | 三菱造船株式会社 | Drainage system of desulfurization device for ship |
| CN110252096A (en) * | 2019-07-04 | 2019-09-20 | 上海蓝魂环保科技有限公司 | A kind of ship tail gas high efficiency desulphurization plant and its application method |
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| CN111036048A (en) * | 2019-12-24 | 2020-04-21 | 上海海事大学 | Novel ship exhaust gas washing desulfurization device |
| CN116020223A (en) * | 2023-01-06 | 2023-04-28 | 湖北远丰科技发展有限公司 | Kitchen garbage removes flavor and removes dust purifier |
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| CN103007694B (en) | 2014-09-24 |
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