CN102910764B - Device and method for simultaneously treating marine waste gas and waste water - Google Patents
Device and method for simultaneously treating marine waste gas and waste water Download PDFInfo
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- CN102910764B CN102910764B CN 201210465524 CN201210465524A CN102910764B CN 102910764 B CN102910764 B CN 102910764B CN 201210465524 CN201210465524 CN 201210465524 CN 201210465524 A CN201210465524 A CN 201210465524A CN 102910764 B CN102910764 B CN 102910764B
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Abstract
The invention discloses a device and a method for simultaneously treating marine waste gas and waste water. The device comprises washing towers (1, 2), a draught fan (3), a draining pump (4) and a transfer pump (5), wherein the washing towers (1, 2) are internally provided with a spray layer (102), a waste water storage tank (103), a carbon gel layer (104) positioned inside the waste water storage tank (103) and a bubbling layer (105) from top to bottom in sequence; the waste water is sprayed out downwards through the spray layer (102) to flow in the waste water storage tank (103); and the waste gas enters the carbon gel layer (104) in the waste water storage tank (103) through the bubbling layer (105) and is washed and purified by the waste water. The device and the method for simultaneously treating marine waste gas and waste water disclosed by the invention have the advantages of simplifying the treatment technology, improving the treatment efficiency, saving the occupied space of the device and reducing the consumption of energy.
Description
Technical field
The invention belongs to environmental technology field, relate in particular to a kind of device and method that utilizes the carbon gel simultaneously to dispose marine exhaust waste water.
Background technology
In recent years, along with the prosperity of international shipping, the SO in the boat diesel engine discharging waste gas
2atmospheric environment is caused to day by day serious impact, become acid rain and air-polluting main source.Therefore, supplemental provisions VI being defined as oxysulfide of " 73/78 pollution convention ": the sulphur content of any fuel oil that boats and ships use must not surpass 4.5wt%, at baltic SO
2any fuel that the boats and ships in emission control district use, sulphur content must not surpass 1.5wt%.Boats and ships can use waste gas cleaning system that the oxysulfide total release is reduced to 6.0g/(kWh) below.On the other hand, " 73/78 pollution convention " supplemental provisions I stipulates that all 400 gross tons and above any boats and ships discharge water oleaginousness are less than 100ppm; All 10000 gross tons and above boats and ships are discharged the water oleaginousness and are less than 15ppm.
Current boats and ships treatment S O
2major technique be that seawater is washed, flue gas in washing tower by contained SO
2remove the SO of this method
2transformation efficiency is lower, needs to increase extra blower fan and blasts air; And the major technique of processing oily(waste)water is gravity separation, flotation separation, filtration or absorption.Therefore to dispose multiple pollutant at present simultaneously, will need two or more devices to combine use, this can make boats and ships drop into a large sum of expense on its pollutant handling arrangement, and the operation and maintenance of its treatment system also can become suitable complexity, has increased working cost.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of method of simultaneously processing marine exhaust and waste water, and a kind of device of simultaneously processing marine exhaust and waste water further is provided.
For achieving the above object, the adoptable technical scheme of the present invention is:
A kind of device of simultaneously processing marine exhaust and waste water, it comprises washing tower, induced draft fan, wet-pit and transferpump, set gradually spraying layer in described washing tower from top to bottom, the waste water storage tank, be arranged in the carbon gel coat of described waste water storage tank, and bubble level, described induced draft fan and transferpump are respectively by waste gas, waste water blasts in described washing tower, described waste water sprays downwards through described spraying layer, flow in described waste water storage tank, described waste gas enters in the carbon gel coat in described waste water storage tank and by described waste water cleaning through described bubble level, waste gas after purification is discharged through the top of described washing tower, waste water in described waste water storage tank is regularly discharged by described wet-pit.
Preferably, in the described device of simultaneously processing marine exhaust and waste water: described device also comprises vapour pipe, described vapour pipe is introduced described washing tower by steam, and described steam enters described carbon gel coat and it is carried out to manipulation of regeneration, and described steam is cooling to pump by described wet-pit.
Preferably, in the described device of simultaneously processing marine exhaust and waste water: described device also comprises recycle pump, described recycle pump for by the waste water pump of described waste water storage tank to described spraying layer, and spray downwards from described spraying layer.
Preferably, in the described device of simultaneously processing marine exhaust and waste water: described device also comprises Water Tank and sump pump, described sump pump for by the sump pump on boats and ships to the storage of described Water Tank, with treat described transferpump by described sump pump to described washing tower.
Preferably, in the described device of simultaneously processing marine exhaust and waste water: described recycle pump, sump pump and transferpump are mono-pump, described wet-pit is impeller pump, and described induced draft fan is high-temperature centrifugal fan, the working temperature of wherein said induced draft fan≤350 ℃.
The present invention further provides a kind of method of simultaneously processing marine exhaust and waste water, comprised the following steps:
Waste gas on boats and ships and waste water are pumped in washing tower through induced draft fan, transferpump respectively, wherein said waste gas upwards enters the carbon gel coat the waste water storage tank from the bubble level of wash tower bottoms, described waste water, from the spraying layer ejection at washing tower top, flows into described waste water storage tank;
In described washing tower, the objectionable constituent in described waste gas are absorbed by described waste water or react with the composition in described waste water;
Waste gas is after treatment discharged through the washing tower top, and waste water is after treatment regularly discharged by wet-pit.
Preferably, in the described method of simultaneously processing marine exhaust and waste water: described method also comprises steam introduced in washing tower, and enters in described carbon gel coat by described spraying layer, and described steam is for making described carbon gel coat recover adsorptive power.
Preferably, in the described method of simultaneously processing marine exhaust and waste water: described method also comprises by recycle pump the waste water pump in described waste water storage tank to described spraying layer, and spray downwards from described spraying layer, so that the waste water circulation use, until described waste water fully adsorbs the objectionable constituent in described waste gas and/or fully reacts with the objectionable constituent in described waste gas.
The advantage of processing the device of marine exhaust and waste water simultaneously and having of the present invention comprises: dispose when can realize waste gas waste water, greatly simplified Pollution From Ships thing treatment process, saved investment cost; Adopt alkaline waste water to absorb acid waste gas, realized " treatment of wastes with processes of wastes against one another ", avoided the interpolation of additional absorbent/sorbent material, saved working cost; Relatively traditional seawer washing tower, the waste water used alkalescence strong (waste water ph is 10-12, and seawater pH value is 7.5-8.3), unit mass can absorb more SO
2, effectively reduce and carry and spray flux, reduced the load of pump, saved the energy; SO
2removal efficiency is high, SO
2more easily to H
2sO
4transform, removal efficiency can reach more than 90%.
Will be appreciated that, the feature in the above each side of the present invention is independent assortment within the scope of the invention, and is not subject to the restriction of its order---as long as the technical scheme after combination drops in connotation of the present invention.That is to say, the arbitrary combination between such scheme is also within connotation of the present invention.
The accompanying drawing explanation
The device of the present invention being processed to marine exhaust and waste water simultaneously below in conjunction with drawings and Examples is described further, in accompanying drawing:
Fig. 1 is the structural representation that the present invention processes the device of marine exhaust and waste water simultaneously.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiments only is not used in and limits the scope of the invention for the present invention is described, after reading the present invention, those skilled in the art all falls within the application's claim limited range to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, the invention discloses a kind of device of simultaneously processing marine exhaust and waste water.In this device, adopt two washing towers 1,2 separately or the operation of string (also) connection.The device of simultaneously processing marine exhaust waste water comprises washing tower 1,2, spraying layer 102, waste water storage tank 103, carbon gel coat 104, bubble level 105, induced draft fan 3, recycle pump 106, wet-pit 4, sump pump 7, Water Tank 6, transferpump 5, waste gas from boat diesel engine passes through induced draft fan 3, enter bubble level from the bottom of washing tower 1, blast in waste water storage tank 103, the carbon gel coat 104 in waste water storage tank 103 in liquid phase by the SO in waste gas
2catalyzed oxidation is H
2sO
4, and neutralized by waste water, waste gas is discharged after the further purification of waste water spray at spraying layer 102, and the waste water after spray flows into the waste water storage tank 103 of wash tower bottoms, and greasy dirt is wherein adsorbed by carbon gel coat 104, and passes through recycle pump 106 recycles; Washing tower 1 waste water is supplemented by transferpump 5 by Water Tank 6, the sewer that Water Tank 6 is collected from desalting equipment and boiler via sump pump 7.
Scrubber system comprises spraying layer 102, waste water storage tank 103, carbon gel coat 104, bubble level 105, recycle pump 106, is generally 1.3-1.5 times of concentration of seawater from its concentration of sewer of desalting equipment, thereby for SO
2assimilation effect better, and from the sewer of boiler owing to having added Na in water treatment procedure
3pO
4, Na
3pO
4hydrolysis generates NaOH, thereby can be used for SO
2absorption and H
2sO
4neutralization.These waste water are collected in Water Tank 6 by sump pump, and after mixing, pH value, between 10-12, then is delivered to spraying layer 102 by transferpump 5 and is sprayed, and spray waste water afterwards enters in waste water storage tank 103, in and H
2sO
4the time greasy dirt wherein by 104 absorption of carbon gel coat, waste water by carbon gel coat 104 returns to spraying layer 102 recycles via recycle pump 106, remaining greasy dirt is further adsorbed simultaneously, when being less than when 15ppm and pH value are more than or equal to 6.8, waste water greasy dirt content regularly discharges via wet-pit, strengthen cycle index when greasy dirt content is higher and continue to use the carbon gel-filtration, the higher fresh soda wastewater that supplements of pH value.When finding that the lasting higher increasing cycle index of greasy dirt content is invalid, close the waste water and gas pipeline of washing tower, open vapour line, adopt pressure 0.5-1.3MPa, the saturation steam of temperature 165-194 ° of C enters washing tower by spraying layer the carbon gel coat is regenerated, and recovers absorption property.The reuse water that contains sump oil is discharged sump oil through wet-pit, and after regeneration, reply oil extraction pipeline is cleaned, and prevents secondary pollution.
The boat diesel engine spent air temperture is 250-350 ° of C, SO
2concentration is 0-1000ppm, O
2concentration is 10%-15%, and waste gas supplements power through induced draft fan, then from the bottom of washing tower, enters bubble level, and bubble level top arranges the carbon gel coat, and the effect of carbon gel coat is by the SO in waste gas
2catalyzed oxidation is H
2sO
4, due to the katalysis of carbon gel and the SO that participates in reaction
2with O
2the amount ratio be approximately 1:100, thereby do not need to blast extra air, and the middle and upper part of washing tower is provided with 2 layers of spraying layer, and the waste water that the effect of spraying layer is is 1:10 by liquid-gas ratio is sprayed onto in washing tower uniformly, waste water is fully contacted with waste gas, further absorb the SO in waste gas
2, and bring in the waste water storage tank and continue catalyzed oxidation by the carbon gel coat, the waste gas after purification is discharged from the washing tower top.
Device of the present invention is adopted available two (many) individual washing towers, but they both can have been connected, also parallel operation is used, also can a use, and maintenance or the regeneration of carbon gel.Owing to directly carrying oily(waste)water, in order to reduce the disturbance to oil droplet, select mono-pump with the supporting recycle pump of washing tower, sump pump, transferpump, wet-pit is selected impeller pump, and induced draft fan is selected high-temperature centrifugal fan, blast 3000Pa, working temperature≤350 ℃.
Describe the specific works process of described device in conjunction with Fig. 1: during washing tower 1 work, open valve 801, waste gas enters washing tower 1, opens valve 809 simultaneously, and recycle pump starts, and starts spray, and the waste gas after desulfurizing and purifying is discharged through valve 803, when in washing tower, the pH value of waste water is down to 6.8 left and right, valve-off 809, recycle pump stops, and opens valve 806 and valve 807, starts transferpump displacement waste water, opens valve 811 and valve 814 simultaneously, starts wet-pit and coordinates displacement, when draining greasy dirt content surpasses 15ppm and strengthens cycle index when invalid, now need the carbon gel coat is regenerated, valve- off 801, 803, 809, recycle pump stops, open valve 811, 813, 808, transferpump starts, waste water in washing tower 1 is drained into to washing tower 2, valve-off 811 subsequently, 813, 808 and transferpump 5, open valve 815, 807, pressure 0.5-1.3MPa, the saturation steam of temperature 165-194 ° of C enters washing tower 1, when the tower internal pressure reaches 0.5MPa, valve-off 815, 807, stop steam supply, after in tower, steam natural is cooled to liquid state, Open valve 811, 814, wet-pit starts, discharge greasy dirt, before reusing, open valve 806, 807, 811, 814, transferpump and wet-pit start, flushing pipeline, until wash-down water greasy dirt content is less than 15ppm.
During washing tower 2 work, open valve 802, waste gas enters washing tower 2, opens valve 810 simultaneously, and recycle pump starts, and starts spray, and the waste gas after desulfurizing and purifying is discharged through valve 804, when in washing tower, the pH value of waste water is down to 6.8 left and right, valve-off 810, recycle pump stops, and opens valve 806 and valve 808, starts transferpump displacement waste water, opens valve 812 and valve 814 simultaneously, starts wet-pit and coordinates displacement, when draining greasy dirt content surpasses 15ppm and strengthens cycle index when invalid, now need the carbon gel coat is regenerated, valve-off 802, 804, 810, recycle pump stops, open valve 812, 813, 807, transferpump starts, waste water in washing tower 2 is drained into to washing tower 1, valve-off 812 subsequently, 813, 807 and transferpump 5, open valve 815, 808, pressure 0.5-1.3MPa, the saturation steam of temperature 165-194 ° of C enters washing tower 2, when the tower internal pressure reaches 0.5MPa, valve-off 815, 808, stop steam supply, after in tower, steam natural is cooled to liquid state, Open valve 812, 814, wet-pit starts, discharge greasy dirt, before reusing, open valve 806, 808, 812, 814, transferpump 5 and wet-pit 4 start, flushing pipeline, until wash-down water greasy dirt content is less than 15ppm.
As outlet SO
2concentration is higher than 6.0g/(kWh) time, valve-off 803, open valve 804 and valve 805 simultaneously, now washing tower 1 and washing 2 tower serial operations; When exhausted air quantity, during higher than single tower design flow, valve-off 805, open valve 802 and valve 803 simultaneously, now washing tower 1 and washing tower 2 parallel operations.
The reaction equation of carbon gel coat catalyzed oxidation SO2 is as follows:
σ wherein
v,
be respectively the active sites in carbon gel overhead, adsorbed SO
2active sites, adsorbed SO
3active sites and adsorbed H
2sO
4active sites, aq represents the aqueous solution.
The neutralization reaction equation of waste water is as follows:
H
2SO
4→2H
++SO
4 2-
Na
3PO
4+H
2O→Na
2HPO
4+NaOH
OH
-+H
+→H
2O
CO
3 2-+2H
+→CO
2+H
2O
HCO
3 -+H
+→CO
2+H
2O
Device is to SO in marine exhaust
2removal efficiency can reach more than 90%, waste water is treated meets pH value>=6.8, the emission standard of greasy dirt≤15ppm.
The above-mentioned shortcoming that the present invention is directed to background technology is improved device, can realize the disposal of waste gas waste water simultaneously.Using washing tower as basis, process when by improvement, realizing waste gas waste water, can control a large sum of expense of saving for the pollutent of boats and ships.
The invention solves conventional washing tower technology and exist SO
2to H
2sO
4transformation efficiency is low and need to adopt high-power blower additionally blast air to accelerate SO
2oxidation, the H formed after simultaneous oxidation
2sO
4must chemical neutralization, therefore produced again the problem of extra sulfur-containing waste water.Utilize vessel Waste, waste water such as boiler blowdown water, sea water desalinating plant sewer is rich in OH
-, CO
3 2-, HCO
3 -deng basic anion, above-mentioned waste water is used for to SO
2absorption and H
2sO
4neutralization, but itself contain after the impurity such as greasy dirt need to purify, can discharge.For this problem, the carbon gel coat is set in washing tower, make its catalyzed oxidation SO in liquid phase
2, accelerate it to H
2sO
4transform, can avoid blasting of additional air, the simplified apparatus save energy; On the other hand, utilize the pore texture of carbon gel coat prosperity, can effectively filter greasy dirt, make discharged wastewater met the national standard.Finally, completed in same equipment in waste gas waste water and disposed, adopted alkaline waste water to absorb acid waste gas, realized " treatment of wastes with processes of wastes against one another ", avoided the interpolation of additional absorbent/sorbent material, there is excellent economy and environmental benefit.
Claims (8)
1. a device of simultaneously processing marine exhaust and waste water, it is characterized in that: it comprises washing tower (1,2), induced draft fan (3), wet-pit (4) and transferpump (5), set gradually spraying layer (102), waste water storage tank (103) in described washing tower (1,2) from top to bottom, be arranged in the carbon gel coat (104) of described waste water storage tank (103), and bubble level (105);
Described induced draft fan (3) and transferpump (5) blast waste gas, waste water respectively in described washing tower (1,2), and described waste water, through described spraying layer (102) ejection downwards, flow in described waste water storage tank (103),
Described waste gas enters in the carbon gel coat (104) in described waste water storage tank (103) and by described waste water cleaning through described bubble level (102), greasy dirt is adsorbed by carbon gel coat (104), waste water is by recycle pump (106) recycle, the carbon gel coat in liquid phase by the SO in waste gas
2catalyzed oxidation is H
2sO
4, and neutralized by waste water, waste gas further purifies by the top of described washing tower (1,2) and discharges through the waste water spray at spraying layer (102),
Waste water in waste water storage tank (103) is regularly discharged by described wet-pit (4).
2. the device of simultaneously processing marine exhaust and waste water according to claim 1, it is characterized in that: described device also comprises vapour pipe (9), described vapour pipe (9) is introduced described washing tower (1,2) by steam, described steam enters described carbon gel coat (104) and it is carried out to manipulation of regeneration, and described steam is cooling to pump by described wet-pit (4).
3. the device of simultaneously processing marine exhaust and waste water according to claim 1, it is characterized in that: described device also comprises recycle pump (106), described recycle pump (106) for the waste water pump by described waste water storage tank (103) to described spraying layer (102), and from described spraying layer (102) ejection downwards.
4. the device of simultaneously processing marine exhaust and waste water according to claim 1, it is characterized in that: described device also comprises Water Tank (6) and sump pump, described sump pump (7) for the sump pump by boats and ships to described Water Tank (6) storage, with treat described transferpump by described sump pump to described washing tower (1,2).
5. the device of simultaneously processing marine exhaust and waste water according to claim 1, it is characterized in that: described recycle pump (106), sump pump (7) and transferpump (5) are mono-pump, described wet-pit (4) is impeller pump, described induced draft fan is high-temperature centrifugal fan, the working temperature of wherein said induced draft fan (3)≤350 ℃.
6. a method of simultaneously processing marine exhaust and waste water is characterized in that: said method comprising the steps of:
Waste gas on boats and ships and waste water are pumped in washing tower through induced draft fan, transferpump respectively, wherein said waste gas upwards enters the carbon gel coat the waste water storage tank from the bubble level of wash tower bottoms, described waste water, from the spraying layer ejection at washing tower top, flows into described waste water storage tank;
In described washing tower, objectionable constituent in described waste gas are absorbed by described waste water or react with the composition in described waste water: described waste gas enters in the carbon gel coat in the waste water storage tank and by described waste water cleaning through bubble level, greasy dirt is adsorbed by the carbon gel coat, waste water is by the recycle pump recycle, the carbon gel coat in liquid phase by the SO in waste gas
2catalyzed oxidation is H
2sO
4, and neutralized by waste water,
Waste gas is after treatment discharged through the washing tower top, and waste water is after treatment regularly discharged by wet-pit.
7. the method for simultaneously processing marine exhaust and waste water according to claim 6, it is characterized in that: described method also comprises to be introduced steam in washing tower, and enter in described carbon gel coat by described spraying layer, described steam is for making described carbon gel coat recover adsorptive power.
8. the method for simultaneously processing marine exhaust and waste water according to claim 6, it is characterized in that: described method also comprises by recycle pump the waste water pump in described waste water storage tank to described spraying layer, and spray downwards from described spraying layer, so that the waste water circulation use, until described waste water fully adsorbs the objectionable constituent in described waste gas and/or fully reacts with the objectionable constituent in described waste gas.
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| DK2775112T4 (en) | 2013-03-08 | 2023-04-17 | Alfa Laval Corp Ab | CLEANING SYSTEM AND METHOD FOR REDUCING SOX IN EXHAUST GASES |
| CN108002641A (en) * | 2017-11-08 | 2018-05-08 | 郭莹莹 | A kind of anticlogging high efficiency sewage treatment facility |
| CN109455845B (en) * | 2018-04-25 | 2021-09-21 | 轻工业环境保护研究所 | Method and device for co-processing waste gas and waste water of steam maintenance plant |
| CN108905518A (en) * | 2018-08-02 | 2018-11-30 | 张军 | A kind of emission reduction energy-saving equipment of foreign-going ship |
| CN110075708A (en) * | 2019-05-10 | 2019-08-02 | 陕西青朗万城环保科技有限公司 | A kind of exhaust gas wastewater comprehensive treatment system and method |
| JP2022032490A (en) * | 2020-08-12 | 2022-02-25 | 富士電機株式会社 | Exhaust emission control system |
| JP2022138422A (en) * | 2021-03-10 | 2022-09-26 | 住友重機械マリンエンジニアリング株式会社 | ship control system |
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| JP4523741B2 (en) * | 2001-08-08 | 2010-08-11 | 千代田化工建設株式会社 | Removal method of sulfurous acid gas |
| CN1597059A (en) * | 2003-09-19 | 2005-03-23 | 李勇 | Twin-tower circulation washing and suction smoke and desulfurization method for waste water of power plant boiler |
| CN201728054U (en) * | 2010-07-06 | 2011-02-02 | 同方环境股份有限公司 | Device for alkali-based desulfurization of exhausted smoke on ship |
| CN102309912A (en) * | 2010-07-06 | 2012-01-11 | 同方环境股份有限公司 | Device and method for performing alkali desulfurization and dust removal on ship exhaust fume |
| CN202087200U (en) * | 2011-05-12 | 2011-12-28 | 西安建筑科技大学 | Fume desulfurizing device of fluidized bed |
| CN102343209B (en) * | 2011-09-28 | 2013-04-17 | 西安交通大学 | Seawater flue gas desulphurization (FGD) system applying boiler blowdown water |
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Effective date of registration: 20160927 Address after: 225217 No. 1, Lane No., shipbuilding industry zone, Jiangdu Economic Development Zone, Yangzhou, Jiangsu Patentee after: AVIC tripod Shipbuilding Co., Ltd. Address before: 212003 Zhenjiang City, Jiangsu province dream Creek Road, No. 2 Patentee before: Jiangsu University of Science and Technology |
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Address after: 225217 No. 1 middle route of shipbuilding industrial belt, Jiangdu District Economic Development Zone, Yangzhou, Jiangsu Patentee after: AVIC DINGHENG SHIPBUILDING CO., LTD. Address before: 225217 No. 1 middle route of shipbuilding industrial belt, Jiangdu Economic Development Zone, Yangzhou, Jiangsu Patentee before: AVIC tripod Shipbuilding Co., Ltd. |
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Address after: 225217 shipping route No. 1 in the shipbuilding industry belt of Jiangdu District Economic Development Zone, Yangzhou, Jiangsu Patentee after: China Merchants Jinling Dingheng shipping (Yangzhou) Co., Ltd Address before: 225217 shipping route No. 1 in the shipbuilding industry belt of Jiangdu District Economic Development Zone, Yangzhou, Jiangsu Patentee before: AVIC DINGHENG SHIPBUILDING Co.,Ltd. |