Flue gas purification filtration equipment for boats and ships
Technical Field
The invention relates to the technical field of ship flue gas purification treatment, in particular to a flue gas purification and filtration device for a ship.
Background
At present, the main technologies for reducing the SO emission of ship flue gas comprise fuel pretreatment (obtaining low-sulfur oil), fuel substitution (such as L NG) and flue gas post-treatment, although the emission limit requirement of IMO can be met by adopting the pretreatment fuel or the substitution fuel, the operation cost of the ship is greatly improved due to the related existing fuel oil refining and the structural improvement of ship fuel oil combustion equipment.
The ship flue gas post-treatment technology is a main technical means for realizing the ship flue gas compliant emission at present by transforming the tail end of a ship flue gas emission system without changing the conventional fuel oil and combustion equipment. The method for desulfurizing the flue gas of the ship mainly adopts an alkaline absorbent to absorb and separate SO in the flue gas, and can be divided into a calcium method, a magnesium method, an ammonia method, a sodium method, a seawater method and the like according to the types of the absorbent. The seawater method utilizes the natural alkalinity of seawater, does not need to store and consume alkaline reagents such as NaOH, MgO and the like, and has higher economical efficiency and safety.
The seawater desulfurization system adopts seawater to absorb SO. natural seawater in ship flue gas, the pH value is generally 7.3-8.3, the alkalinity is 2.0-3.0 mmol/L, although the full absorption of SO in the flue gas can be realized, the discharged washing water is weakly acidic, the pH value is about 3-6, and the discharging requirements of washing water of IMO (pH is more than or equal to 6.5) and EPA (pH is more than or equal to 6.0) are not met.
Disclosure of Invention
The invention provides flue gas purifying and filtering equipment for ships, which aims to solve the problems in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a flue gas purifying and filtering device for ships comprises a purifying box body, a purifying mechanism and a filtering mechanism, wherein the purifying mechanism and the filtering mechanism are arranged in the purifying box body;
the purification mechanism comprises purified liquid, a rotating rod, a spiral stirring blade, a first rotating motor, a waterproof cover and a partition plate;
the baffle plate is arranged inside the purifying box body, a flue gas inlet is formed in the side wall surface of the purifying box body, the purified liquid is arranged inside the purifying box body, the first rotating motor is arranged inside the purifying box body, the rotating rod is connected to the driving end of the first rotating motor through a flange in a spiral mode, the spiral stirring blade is arranged on the rotating rod, and the waterproof cover is arranged inside the purifying box body and located on one side of the first rotating motor;
the filtering mechanism is used for filtering the purified flue gas.
Preferably, the filter mechanism comprises a smoke particle filter screen, a protection screen and activated carbon particles; the smog granule filter screen sets up in the inside of purifying box, the protection network is settled in the inside of purifying box, and is located the top of smog granule filter screen, the active carbon granule sets up in the inside of protection network.
Preferably, a spraying mechanism is arranged in the purifying box body;
the spraying mechanism comprises a miniature water absorption pump, a guide pipe, an atomizing nozzle and a movable connecting frame;
the miniature water-absorbing water pump is arranged on the inner lower surface of the purification box body, the guide pipe is connected to the miniature water-absorbing water pump, the movable connecting frame is arranged on the inner upper surface of the purification box body, and the atomizing nozzle is hung on the movable connecting frame.
Preferably, one end of the upper surface of the purifying box body is provided with a smoke outlet, and an exhaust fan is embedded in the smoke outlet.
Preferably, the lower surface of the purification box body is provided with a liquid outlet, and an electromagnetic valve is embedded in the liquid outlet.
Preferably, a rectangular opening is formed in the upper end of the side surface of the purifying box body, and the edge of the rectangular opening is hinged with the rectangular stop door.
Preferably, an auxiliary purification mechanism is arranged in the purification box body;
the auxiliary purification mechanism comprises a second rotating motor, a connecting rod, a bearing and a cylinder;
the second rotating electrical machines are arranged on the rear surface of the purifying box body, circular grooves are formed in the inner front surface of the purifying box body, the bearings are embedded in the circular grooves, the connecting rods penetrate through the rear surface of the purifying box body and are connected with the bearings, one ends of the connecting rods are in threaded connection with the driving ends of the second rotating electrical machines through flanges, the second rotating electrical machines drive the connecting rods to rotate, the cylinders are sleeved on the connecting rods, and a plurality of arc-shaped grooves are formed in the circumferential surface of each cylinder.
Preferably, a bearing plate is arranged on the rear surface of the purifying box body and on the lower surface of the second rotating motor.
Preferably, the protective net is sleeved with a thick gauze layer.
The invention has the following beneficial effects:
this device easy operation, novel structure, the security performance is high, and reaction rate is faster to make desulfurization reaction more thorough, desulfurization efficiency increase, the volume is less, and the energy consumption is low, and very suitable boats and ships use.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of a flue gas purifying and filtering device for a ship according to the present invention;
FIG. 2 is a top cross-sectional view of a marine flue gas cleaning and filtering apparatus of the present invention;
fig. 3 is a top view of a marine flue gas purifying and filtering apparatus according to the present invention.
The reference numerals in the figures denote:
1. purifying the box body; 2. purifying the liquid; 3. rotating the rod; 4. a spiral stirring blade; 5. a first rotating electrical machine; 6. a waterproof cover; 7. a partition plate; 8. a smoke particle filter screen; 9. a protection net; 10. activated carbon particles; 11. a micro water suction pump; 12. a conduit; 13. an atomizing spray head; 14. a movable connecting frame; 15. an exhaust fan; 16. a liquid outlet; 17. an electromagnetic valve; 18. a rectangular shutter; 19. a second rotating electrical machine; 20. a connecting rod; 21. a bearing; 22. a cylinder; 23. a carrier plate; 24. a thick gauze layer; 25. an arc-shaped groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a flue gas purifying and filtering device for a ship includes a purifying box 1, a purifying mechanism and a filtering mechanism disposed in the purifying box 1;
the purification mechanism comprises purified liquid 2, a rotating rod 3, a spiral stirring blade 4, a first rotating motor 5, a waterproof cover 6 and a partition plate 7;
the left side wall surface of the purification box body 1 is provided with a flue gas inlet, the purification liquid 2 is arranged below the interior of the purification box body 1, the first rotating motor 5 is arranged at the bottom of the right side of the interior of the purification box body 1, the rotating rod 3 is in threaded connection with the driving end of the first rotating motor 5 through a flange, the spiral stirring blade 4 is arranged on the rotating rod 3, and the waterproof cover 6 is arranged inside the purification box body 1 and is positioned on the left side of the first rotating motor 5;
the filtering mechanism is used for filtering the purified flue gas.
The filter mechanism comprises a smoke particle filter screen 8, a protection screen 9 and activated carbon particles 10;
the smog granule filter screen 8 sets up in the inside right side top of purifying box 1, protection net 9 settles in the inside right side of purifying box 1, and is located smog granule filter screen 8's top, activated carbon granule 10 sets up in protection net 9's inside.
A spraying mechanism is arranged on the left side in the purifying box body 1, and the partition plate 7 is arranged above the inside of the purifying box body 1 and is positioned between the spraying mechanism and the filtering mechanism;
the spraying mechanism comprises a miniature water absorption pump 11, a guide pipe 12, an atomizing nozzle 13 and a movable connecting frame 14; the miniature water pump 11 that absorbs water sets up at the inside left side lower surface of purifying box 1, pipe 12 connects on miniature water pump 11 that absorbs water, swing joint 14 settles in the inside left side upper surface of purifying box 1, atomizer 13 hangs on swing joint 14.
The right end of the upper surface of the purifying box body 1 is provided with a smoke outlet, and an exhaust fan 15 is embedded in the smoke outlet.
A liquid outlet 16 is formed in the lower surface of the purifying box body 1, and an electromagnetic valve 17 is embedded in the liquid outlet 16.
The upper end of the right side surface of the purifying box body 1 is provided with a rectangular opening, and the edge of the rectangular opening is hinged with a rectangular stop door 18.
An auxiliary purification mechanism is arranged below the spraying mechanism in the purification box body 1;
the auxiliary purification mechanism comprises a second rotating motor 19, a connecting rod 20, a bearing 21 and a cylinder 22;
the second rotating motor 19 is arranged on the rear surface of the purifying box body 1, a circular groove is formed in the inner front surface of the purifying box body 1, the bearing 21 is embedded in the circular groove, the connecting rod 20 penetrates through the rear surface of the purifying box body 1 and is connected with the bearing 21, one end of the connecting rod 20 is in threaded connection with the driving end of the second rotating motor 19 through a flange, the second rotating motor 19 drives the connecting rod 20 to rotate, the cylinder 22 is sleeved on the connecting rod 20, and a plurality of arc-shaped grooves 25 are formed in the circumferential surface of the cylinder 22.
A bearing plate 23 is arranged on the rear surface of the purifying box body 1 and on the lower surface of the second rotating motor.
The protective net 9 is sleeved with a thick gauze layer 24.
The working principle is as follows:
firstly, the smoke outlet of the smoke exhaust equipment of the ship is connected with the smoke inlet of the purifying box body 1, then smoke can be exhausted into the purifying box body 1, when smoke enters the purifying box body 1, the smoke can be sprayed with purifying liquid by the atomizing spray head 13, then the smoke can be driven by the second rotating motor 19 to rotate the cylinder 22 on the connecting rod 20 and be brought into the purifying liquid, the purifying liquid can be brought out when the cylinder rotates due to the arc-shaped groove 25 formed in the cylinder, so that the smoke is subjected to desulfurization treatment, then the first rotating motor 5 drives the rotating rod 3 to rotate, so that the rotating rod 3 can drive the spiral stirring blade 4 to rotate, the spiral stirring blade 4 drives the purifying liquid 2 to move rightwards in the purifying box body 1, then the smoke can be discharged from the right side of the purifying box body 1, in the discharging process, the smoke can be filtered by the smoke particle filter screen 8 again, and then the active carbon particles 10 in the protective screen 9 can purify the smoke and absorb harmful substances such as, then is discharged out of the purifying box body 1 by the exhaust fan 15, the purifying liquid 2 in the purifying box body 1 needs to be replaced at regular time, the purifying liquid 2 can be discharged out through the electromagnetic valve 17, when the purified liquid 2 is put in, the purified liquid can be put in through the rectangular stop door 18 at the rectangular opening, meanwhile, the protection net 9 and the smoke particle filter screen 8 can be replaced through the rectangular opening, the influence on the filtering effect caused by long-time non-cleaning is avoided, the bearing plate 23 is used for bearing the second rotating motor 19, the shaking phenomenon during the work is avoided, when the micro water suction pump 11 transmits the purified liquid 2 to the atomizing nozzle 13 through the conduit 12, the atomizing nozzle 13 can spray the purified liquid 2, because the atomizing nozzle 13 is hung on the movable connecting frame 14, the atomizing nozzle is shaken when in work, therefore, the flue gas can be better desulfurized, and the thick gauze layer 24 is used for adsorbing particles of tiny flue gas.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.