CN114000935A - Tail gas purification device and purification method of stern gas - Google Patents
Tail gas purification device and purification method of stern gas Download PDFInfo
- Publication number
- CN114000935A CN114000935A CN202111272861.1A CN202111272861A CN114000935A CN 114000935 A CN114000935 A CN 114000935A CN 202111272861 A CN202111272861 A CN 202111272861A CN 114000935 A CN114000935 A CN 114000935A
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- gas
- fixed
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- pipe
- washing
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- 238000000746 purification Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 165
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 27
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 27
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 21
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 10
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 8
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 5
- 229910002090 carbon oxide Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 82
- 239000002912 waste gas Substances 0.000 claims description 69
- 239000006185 dispersion Substances 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 15
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 12
- 239000004202 carbamide Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 10
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 claims description 8
- 229910000020 calcium bicarbonate Inorganic materials 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 6
- 238000007781 pre-processing Methods 0.000 claims description 5
- 210000003437 trachea Anatomy 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 229910052815 sulfur oxide Inorganic materials 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 239000010812 mixed waste Substances 0.000 claims description 2
- 238000000197 pyrolysis Methods 0.000 claims description 2
- 241000883990 Flabellum Species 0.000 claims 2
- 239000007787 solid Substances 0.000 abstract description 5
- 238000004887 air purification Methods 0.000 abstract description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 abstract 1
- 238000010926 purge Methods 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000005201 scrubbing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/0205—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0857—Carbon oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to the field of air purification, and relates to a stern gas purification device and a purification method thereof. When the exhaust gas is discharged from a ship engine, the solid particles in the high-temperature exhaust gas are adsorbed, the nitrogen oxide gas is converted into nitrogen, the sulfur oxide is fully oxidized into sulfur dioxide and then reacts again to generate calcium sulfate for collection, the carbon oxide is fully oxidized into carbon dioxide and then reacts again to generate calcium carbonate for collection, and the discharged exhaust gas only contains nitrogen and other harmless gases.
Description
Technical Field
The invention belongs to the field of air purification, and particularly relates to a stern gas purification device and a stern gas purification method.
Background
In-process at the ship navigation, because the diesel engine's of steamer use characteristic, contain a large amount of solid particulate matter usually in the exhaust waste gas, nitrogen oxide, the emission of oxysulfide and oxycarbide has led to the fact very big pollution to the atmospheric environment, simultaneously because the working property of steamer, make it can discharge each department all over the world with contaminated gas at the in-process of operation, be difficult to concentrate the monitoring and processing, and traditional tail gas purification device needs the series connection of multiple device just can reach the purpose of handling most contaminated gas, the tail gas purification process is complicated and the installation operation is inconvenient on the ship exhaust chimney of variation in size, simultaneously because these devices are mostly solid filter equipment, it is comparatively loaded down with trivial details to change filter core work, be unfavorable for the processing of a large amount of exhaust ship waste gas.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a ship tail gas purification device and a purification method thereof, and the ship tail gas purification device and the purification method thereof can efficiently treat a large amount of harmful gases and substances in tail gas generated in the operation process of a ship.
The purpose of the invention can be realized by the following technical scheme: the utility model provides a wheel stern gas purification device, includes the hull, the hull internal fixation is equipped with the engine, be equipped with preprocessing device on the engine, preprocessing device is used for carrying out certain processing to waste gas, the hull internal fixation is equipped with first gas washing pond, be equipped with sour gas recovery unit in the first gas washing pond, sour gas device is used for deviating from sour gas from waste gas and retrieves, the hull internal fixation is equipped with the second gas washing pond, be equipped with carbon dioxide recovery unit in the second gas washing pond, carbon dioxide recovery unit are arranged in absorbing carbon dioxide from waste gas, the hull is inherent first gas washing pond with the fixed radiating block that is equipped with between the second gas washing pond, be equipped with the heat sink in the radiating block, the heat sink is used for fully cooling waste gas and is convenient for subsequent processing.
Preferably, the pretreatment device comprises an exhaust pipe fixed at the upper end of the engine, a pretreatment block is fixedly arranged at the upper end of the exhaust pipe, a third fan blade is arranged in the pretreatment block, three vent holes are formed in the upper end of the third fan blade by the pretreatment block, a supporting platform is fixedly arranged in the middle of the three vent holes of the pretreatment block, a second washing cavity is arranged outside the third fan blade in the pretreatment block, particle adsorption oil is arranged in the second washing cavity, two second valves are fixedly arranged at the lower side of the second washing cavity by the pretreatment block, a first washing cavity is arranged outside the second washing cavity in the pretreatment block, urea solution is arranged in the first washing cavity, two second valves are fixedly arranged at the lower side of the first washing cavity by the pretreatment block, and a fixed block is arranged outside the first washing cavity by the pretreatment block in a sliding manner, the fixed catalyst net bars that are equipped with of fixed block inside survey, the fixed block outside is equipped with semi-circular pull ring, catalyst net bars surface is equipped with the aperture that only supplies gas to pass through, the fixed first breather pipe that is equipped with in preliminary treatment piece upper end, preliminary treatment piece is in first breather pipe downside position is equipped with the round platform structure of band vent.
Preferably, the upper end of the supporting table is fixedly provided with a second bearing, the upper end of the second bearing is fixedly provided with an air guide block, the air guide block is provided with two check ring structures, a check ring at the outer side of the air guide block winds the twelve second fan pieces fixedly arranged at the rotation center of the air guide block, a check ring at the inner side of the air guide block winds the twelve first fan pieces fixedly arranged at the rotation center of the air guide block, the upper end of the air guide block is fixedly provided with a first rotating shaft, the lower end of the first rotating shaft is fixedly provided with twelve fans, the upper end of the first rotating shaft is fixedly provided with a first bearing, and the lower end of the first bearing is fixedly connected with the circular table structure of the pretreatment block.
Preferably, the sulfur-containing gas recovery device includes a third bearing fixed in the first scrubbing bath, the upper end of the third bearing is fixedly provided with a supporting shaft, the first gas washing pool is fixedly provided with a built-in gas pipe, a fourth bearing is fixedly arranged at the lower end of the internal air pipe and is fixedly connected with the supporting shaft, the lower end of the supporting shaft is fixedly provided with a gas dispersion pipe, a gas outlet cavity is arranged in the gas dispersion pipe, the gas dispersion pipe is fixedly provided with gas outlet holes which are arranged from small area to large area towards the outer side on the inner side wall of the gas outlet cavity, the lower end of the gas dispersion pipe is fixedly provided with a fifth bearing which is fixedly connected with the first gas washing tank, the fixed pan feeding valve that is equipped with in first gas washing pond left side upper end, the fixed second breather pipe that is equipped with in first gas washing pond upper right side, the fixed third valve that is equipped with of first gas washing pond lower right side.
Preferably, the heat sink is including fixing heat exchange trachea in the radiating block, the fixed intake pipe that is equipped with of radiating block, the intake pipe with heat exchange trachea one end fixed connection, the fixed outlet duct that is equipped with of radiating block, the outlet duct with heat exchange trachea other end fixed connection, the fixed second breather pipe that is equipped with in first pond upper right side of washing, the second breather pipe with be connected with between the intake pipe first breather pipe.
Preferably, the carbon dioxide recovery device is including fixing third bearing in the second scrubbing pond, second scrubbing pond inner structure with first scrubbing pond is unanimous, the outlet duct with the second scrubbing pond be connected with between built-in trachea first breather pipe, the second scrubbing pond second breather pipe upper end is fixed and is equipped with first breather pipe, be equipped with on the second breather pipe first breather pipe accesss to outside the hull.
When the steamship runs, high-temperature waste gas discharged by an engine enters a third blade from an exhaust pipe, the waste gas enters a second air washing cavity along a pretreatment block and an air guide block channel, the waste gas presses down inside granular adsorption oil until the high-temperature waste gas can emerge from the lower side of an air guide block retainer ring to the outer side of the air guide block retainer ring, the high-temperature waste gas is continuously pressed upwards to contact with a first blade after being fully contacted with the granular adsorption oil to push the air guide block to rotate, the high-temperature waste gas enters a first air washing cavity along a gap between the air guide block and the pretreatment block to be fully contacted with urea solution and then rises, the high-temperature waste gas continuously rises to be contacted with a second blade after passing through a catalyst mesh grid to accelerate the rotation of the air guide block, the rotation of the air guide block drives a fan to rotate to supply air upwards so that the flow speed of the waste gas between the pretreatment block and the air guide block gap is accelerated, the waste gas treatment efficiency is improved, and the first valve or the second valve can be directly opened for replacement when the granular adsorption oil or the urea solution is required to be replaced, the high-temperature waste gas discharged from the first vent pipe is sent into the built-in gas pipe of the first gas washing pool, the high-temperature waste gas enters the gas dispersion pipe along the built-in gas pipe and then is discharged from the gas outlet hole, the gas outlet hole is centrosymmetric with respect to the rotation center in the rotation plane, the high-temperature waste gas discharged from the gas outlet hole pushes the gas outlet hole to rotate directionally, so that the high-temperature waste gas can be contacted with lime water in the first gas washing pool more uniformly, the high-temperature waste gas after being washed by the lime water is discharged from the second vent pipe and enters the radiating block through the gas inlet pipe, the lower surface of the radiating block is contacted with the bottom of the cabin, the heat exchange gas pipe is directly contacted with the radiating block, the waste gas is subjected to heat exchange rapidly by water flowing through the bottom of the cabin to achieve the purpose of cooling, then the waste gas is discharged from the gas outlet pipe and enters the built-in gas pipe of the second gas washing pool, the waste gas is discharged from the gas dispersion pipe of the second gas washing pool through the gas outlet hole and then is fully contacted with the lime water in the second gas washing pool, and then is directly discharged from the second vent pipe of the second gas washing pool and enters the outside And (4) qi.
In addition, the invention also provides a purifying method of the stern gas purifying device, which comprises the following steps:
s1: the high-temperature waste gas is fully contacted with the granular adsorption oil with higher viscosity so that the particulate matters in the high-temperature waste gas are separated from the high-temperature waste gas by oil adhesion;
s2, after the high-temperature waste gas enters the urea solution, the temperature of the waste gas enables urea to generate hydrolysis and pyrolysis reaction to generate ammonia gas, the ammonia gas and the high-temperature mixed waste gas containing nitrogen oxides rise together to contact with the catalyst in the catalyst grid, the nitrogen oxides are reacted into nitrogen gas under the action of the catalyst, the redundant ammonia gas is reduced into the nitrogen gas, and meanwhile, the sulfur oxides and the carbon oxides are fully oxidized into sulfur dioxide and carbon dioxide in a high-temperature environment;
s3, after the high-temperature waste gas enters lime water in the first gas washing pool, reacting sulfur dioxide and carbon dioxide contained in the high-temperature waste gas with the lime water to generate calcium sulfate and calcium bicarbonate, wherein the calcium sulfate is not decomposed when being heated, and the calcium bicarbonate is easily decomposed when being heated to generate carbon dioxide;
s4: when the low-temperature waste gas enters the lime water in the second gas washing pool, only carbon dioxide in the residual nitrogen, carbon dioxide and other harmless gases in the waste gas reacts with the lime water to generate calcium bicarbonate, and the calcium bicarbonate continuously reacts with the carbon dioxide to generate calcium carbonate under the normal-temperature environment, so that the absorption treatment of the carbon dioxide is completed.
Compared with the prior art, the ship tail gas purification device and the purification method thereof have the following advantages:
1. can completely absorb or convert solid particles, nitrogen oxides, sulfur oxides and carbon oxides into gas harmless to the atmospheric environment, and has high working efficiency and good waste gas purification effect.
2. Harmful oxysulfide generated in the waste gas treatment process can react with carbon dioxide gas causing greenhouse effect to generate calcium sulfate and calcium carbonate, and the enriched calcium sulfate and calcium carbonate solids can be subjected to secondary income generation after subsequent treatment.
3. The used filtering materials are all liquid, the filtering materials are very convenient to take out and place in the filtering device, and the workload that the filtering materials are frequently replaced by new materials in the process of treating a large amount of waste gas is reduced.
Drawings
Fig. 1 is a schematic structural view of a ship tail gas purifying device and a purifying method thereof.
Fig. 2 is an enlarged view of a structure a in fig. 1.
Fig. 3 is an enlarged sectional view of the structure at a in fig. 1.
FIG. 4 is a schematic diagram of a pre-processing block structure.
Fig. 5 is a sectional view taken along line C-C in fig. 1.
In the figure, 10, the hull; 11. an engine; 12. a first gas washing tank; 13. a heat dissipating block; 14. a second gas washing tank; 15. a pretreatment block; 16. a first fan blade; 17. a second fan blade; 18. a catalyst mesh grid; 19. a fixed block; 20. a third fan blade; 21. a first valve; 22. a second valve; 23. an exhaust pipe; 24. a fan; 25. a first bearing; 26. a first rotating shaft; 27. a first vent pipe; 28. a second bearing; 29. a gas guide block; 30. a first purge cavity; 31. a saddle; 32. a second purge cavity; 33. the particles adsorb the oil; 34. a urea solution; 35. an air outlet pipe; 36. a feeding valve; 37. a sulfur-containing gas processing chamber; 38. a gas dispersion tube; 39. an air outlet; 40. a third bearing; 41. a support shaft; 42. an air pipe is arranged inside; 43. a second vent pipe; 44. an air outlet cavity; 45. a fourth bearing; 46. a fifth bearing; 47. a third valve; 48. an air inlet pipe; 49. and a heat exchange air pipe.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a stern gas purification device comprises a hull 10, and is characterized in that an engine 11 is fixedly arranged in the hull 10, the engine 11 is provided with a pretreatment device which is used for carrying out certain treatment on waste gas, a first gas washing tank 12 is fixedly arranged in the ship body 10, a sulfur-containing gas recovery device is arranged in the first gas washing tank 12, the sulfur-containing gas recovery device is used for removing and recovering sulfur-containing gas from waste gas, a second gas washing pool 14 is fixedly arranged in the ship body 10, a carbon dioxide recovery device is arranged in the second gas washing pool 14 and is used for absorbing carbon dioxide from waste gas, a heat dissipation block 13 is fixedly arranged between the first air washing pool 12 and the second air washing pool 14 in the ship body 10, be equipped with the heat sink in the radiating block 13, the heat sink is used for fully cooling the subsequent processing of being convenient for to waste gas.
As shown in fig. 2 and 4, the pretreatment device includes an exhaust pipe 23 fixed at the upper end of the engine 11, a pretreatment block 15 is fixed at the upper end of the exhaust pipe 23, a third fan 20 is arranged in the pretreatment block 15, the pretreatment block 15 is provided with three vent holes at the upper end of the third fan 20, a saddle 31 is fixed at the middle of the three vent holes of the pretreatment block 15, a second purge chamber 32 is arranged at the outer side of the third fan 20 in the pretreatment block 15, particulate adsorption oil 33 is arranged in the second purge chamber 32, two second valves 22 are fixed at the lower side of the second purge chamber 32 in the pretreatment block 15, a first purge chamber 30 is arranged at the outer side of the second purge chamber 32 in the pretreatment block 15, urea solution 34 is arranged in the first purge chamber 30, two second valves 22 are fixed at the lower side of the first purge chamber 30 in the pretreatment block 15, pretreatment block 15 is in the first gas washing chamber 30 outside slides and is equipped with fixed block 19, the fixed catalyst net bars 18 that are equipped with of 19 internal measurations of fixed block, the 19 outside of fixed block is equipped with semi-circular pull ring, catalyst net bars 18 surface is equipped with the aperture that only supplies gas to pass through, pretreatment block 15 upper end is fixed and is equipped with first breather pipe 27, pretreatment block 15 is in first breather pipe 27 downside position is equipped with the round platform structure of band vent.
As shown in fig. 2, a second bearing 28 is fixedly arranged at the upper end of the supporting table 31, an air guide block 29 is fixedly arranged at the upper end of the second bearing 28, the air guide block 29 is provided with two retainer ring structures, twelve second fan blades 17 are fixedly arranged on the outer retainer ring of the air guide block 29 around the rotation center of the air guide block 29, twelve first fan blades 16 are fixedly arranged on the inner retainer ring of the air guide block 29 around the rotation center of the air guide block 29, a first rotating shaft 26 is fixedly arranged at the upper end of the air guide block 29, twelve fans 24 are fixedly arranged at the lower end of the first rotating shaft 26, a first bearing 25 is fixedly arranged at the upper end of the first rotating shaft 26, and the lower end of the first bearing 25 is fixedly connected with the round platform structure of the pretreatment block 15.
As shown in fig. 3, the sulfur-containing gas recycling device includes a third bearing 40 fixed in the first gas washing tank 12, a supporting shaft 41 is fixed at the upper end of the third bearing 40, a built-in gas pipe 42 is fixed in the first gas washing tank 12, a fourth bearing 45 is fixed at the lower end of the built-in gas pipe 42, the fourth bearing 45 is fixedly connected to the supporting shaft 41, a gas dispersion pipe 38 is fixed at the lower end of the supporting shaft 41, a gas outlet cavity 44 is arranged in the gas dispersion pipe 38, a gas outlet hole 39 whose area is arranged from small to large towards the outer side is fixed on the inner side wall of the gas outlet cavity 44 of the gas dispersion pipe 38, a fifth bearing 46 is fixed at the lower end of the gas dispersion pipe 38, the fifth bearing 46 is fixedly connected to the first gas washing tank 12, a material inlet valve 36 is fixed at the upper left end of the first gas washing tank 12, a second vent pipe 43 is fixed at the upper right side of the first gas washing tank 12, and a third valve 47 is fixedly arranged on the lower right side of the first gas washing pool 12.
As shown in fig. 5, the cooling device includes fixing the heat exchange air pipe 49 in the heat dissipation block 13, the fixed intake pipe 48 that is equipped with of heat dissipation block 13, intake pipe 48 with heat exchange air pipe 49 one end fixed connection, the fixed outlet duct 35 that is equipped with of heat dissipation block 13, outlet duct 35 with heat exchange air pipe 49 other end fixed connection, the fixed second breather pipe 43 that is equipped with in the upper right side of first aeration tank 12, second breather pipe 43 with be connected with between intake pipe 48 first breather pipe 27.
As shown in fig. 3, the carbon dioxide recovery device includes a third bearing 40 fixed in the second air washing tank 14, the structure in the second air washing tank 14 is consistent with that in the first air washing tank 12, the air outlet pipe 35 is connected with the first air pipe 27 between the built-in air pipes 42 of the second air washing tank 14, the first air pipe 27 is fixed at the upper end of the second air pipe 43 of the second air washing tank 14, and the first air pipe 27 on the second air pipe 43 leads to the outside of the ship body 10.
When the ship runs, high-temperature waste gas discharged by the engine 11 enters the third fan blade 20 from the exhaust pipe 23, the waste gas enters the second gas washing cavity 32 along the channel between the pretreatment block 15 and the gas guide block 29, the waste gas presses the inside particle adsorption oil 33 downwards until the high-temperature waste gas can emerge from the lower side of the retainer ring of the gas guide block 29 to the outer side of the retainer ring of the gas guide block 29, the high-temperature waste gas is fully contacted with the particle adsorption oil 33 and then is continuously pressed upwards to contact with the first fan blade 16 to push the gas guide block 29 to rotate, the high-temperature waste gas enters the first gas washing cavity 30 along the gap between the gas guide block 29 and the pretreatment block 15 to be fully contacted with the urea solution 34 and then rises, the high-temperature waste gas passes through the catalyst grid 18 and then continuously rises to be contacted with the second fan blade 17 to accelerate the rotation of the gas guide block 29, the rotation of the gas guide block 29 drives the fan 24 to rotate and supply air upwards, so that the flow speed of the waste gas between the gap between the pretreatment block 15 and the gas guide block 29 is accelerated, and the waste gas treatment efficiency is improved, when the particle adsorbed oil 33 or the urea solution 34 needs to be replaced, the first valve 21 or the second valve 22 can be directly opened for replacement, the discharged high-temperature waste gas is sent into the built-in gas pipe 42 of the first gas washing tank 12 from the first vent pipe 27, the high-temperature waste gas enters the gas dispersion pipe 38 along the built-in gas pipe 42 and then is discharged from the gas outlet 39, because the gas outlet 39 is in central symmetry with respect to the rotation center in the rotation plane, the discharged high-temperature waste gas pushes the gas outlet 39 to rotate directionally, so that the high-temperature waste gas can be more uniformly contacted with lime water in the first gas washing tank 12, the high-temperature waste gas after the lime water washing gas is discharged from the second vent pipe 43 and enters the heat dissipation block 13 through the gas inlet pipe 48, the lower surface of the heat dissipation block 13 is contacted with the bottom of the cabin, the heat exchange gas pipe 49 is directly contacted with the heat dissipation block 13, and the waste gas utilizes the water flowing through the bottom of the cabin to quickly complete heat exchange to achieve the purpose of cooling, and then the waste gas is discharged from the gas outlet pipe 35 and enters the built-in gas pipe 42 of the second gas washing tank 14, and the waste gas is discharged from the gas dispersion pipe 38 of the second gas washing tank 14 through the gas outlet hole 39 and is fully contacted with the lime water in the second gas washing tank 14, and then is directly discharged from the second vent pipe 43 of the second gas washing tank 14 and enters the outside atmosphere.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a ship tail gas purification device, includes hull (10), its characterized in that, hull (10) internal fixation is equipped with engine (11), be equipped with preprocessing device on engine (11), preprocessing device is used for carrying out certain processing to waste gas, hull (10) internal fixation is equipped with first gas washing pond (12), be equipped with sour gas recovery unit in first gas washing pond (12), sour gas device is used for deviating from sour gas and retrieves from waste gas, hull (10) internal fixation is equipped with second gas washing pond (14), be equipped with carbon dioxide recovery unit in second gas washing pond (14), carbon dioxide recovery unit is used for absorbing carbon dioxide from waste gas, hull (10) internal fixation is in first gas washing pond (12) with fixed radiating block (13) that is equipped with between second gas washing pond (14), be equipped with the heat sink in radiating block (13), the cooling device is used for fully cooling the waste gas so as to facilitate subsequent treatment.
2. The stern gas purification apparatus of claim 1, wherein: the pretreatment device comprises an exhaust pipe (23) fixed at the upper end of the engine (11), a pretreatment block (15) is fixedly arranged at the upper end of the exhaust pipe (23), a third fan blade (20) is arranged in the pretreatment block (15), the pretreatment block (15) is provided with three vent holes at the upper end of the third fan blade (20), a supporting platform (31) is fixedly arranged in the middle of the three vent holes of the pretreatment block (15), a second washing air cavity (32) is arranged at the outer side of the third fan blade (20) in the pretreatment block (15), granular adsorption oil (33) is arranged in the second washing air cavity (32), two second valves (22) are fixedly arranged at the lower side of the second washing air cavity (32) of the pretreatment block (15), a first washing air cavity (30) is arranged at the outer side of the second washing air cavity (32) in the pretreatment block (15), and urea solution (34) is arranged in the first washing air cavity (30), pretreatment block (15) are in fixed two second valves (22) that are equipped with of first gas washing chamber (30) downside, pretreatment block (15) are in first gas washing chamber (30) outside slides and is equipped with fixed block (19), fixed block (19) internal survey is fixed and is equipped with catalyst net bars (18), fixed block (19) outside is equipped with semi-circular pull ring, catalyst net bars (18) surface is equipped with the aperture that only supplies gas to pass through, pretreatment block (15) upper end is fixed and is equipped with first breather pipe (27), pretreatment block (15) are in first breather pipe (27) downside position is equipped with the round platform structure of band-pass gas hole.
3. The stern gas purification apparatus of claim 2, wherein: the fixed second bearing (28) that is equipped with in saddle (31) upper end, fixed air guide block (29) that is equipped with in second bearing (28) upper end, air guide block (29) are equipped with two retaining ring structures, air guide block (29) outside retaining ring winds fixed twelve second flabellums (17) that are equipped with in air guide block (29) rotation center, air guide block (29) inboard retaining ring winds fixed twelve first flabellums (16) that are equipped with in air guide block (29) rotation center, air guide block (29) upper end is fixed and is equipped with first pivot (26), first pivot (26) lower extreme is fixed and is equipped with twelve fan (24), fixed first bearing (25) that is equipped with in first pivot (26) upper end, first bearing (25) lower extreme with preliminary treatment piece (15) round platform structure fixed connection.
4. The stern gas purification apparatus of claim 3, wherein: the sulfur-containing gas recovery device comprises a third bearing (40) fixed in a first gas washing tank (12), a supporting shaft (41) is fixedly arranged at the upper end of the third bearing (40), a built-in gas pipe (42) is fixedly arranged in the first gas washing tank (12), a fourth bearing (45) is fixedly arranged at the lower end of the built-in gas pipe (42), the fourth bearing (45) is fixedly connected with the supporting shaft (41), a gas dispersion pipe (38) is fixedly arranged at the lower end of the supporting shaft (41), a gas outlet cavity (44) is arranged in the gas dispersion pipe (38), gas outlet holes (39) with areas arranged from small to large to the outer side are fixedly arranged in the inner side wall of the gas outlet cavity (44) of the gas dispersion pipe (38), a fifth bearing (46) is fixedly arranged at the lower end of the gas dispersion pipe (38), and the fifth bearing (46) is fixedly connected with the first gas washing tank (12), first gas washing pond (12) left side upper end is fixed and is equipped with pan feeding valve (36), first gas washing pond (12) upper right side is fixed and is equipped with second breather pipe (43), first gas washing pond (12) lower right side is fixed and is equipped with third valve (47).
5. The stern gas purification apparatus of claim 4, wherein: the heat sink is including fixing heat exchange air pipe (49) in cooling block (13), cooling block (13) are fixed to be equipped with intake pipe (48), intake pipe (48) with heat exchange air pipe (49) one end fixed connection, cooling block (13) are fixed to be equipped with outlet duct (35), outlet duct (35) with heat exchange air pipe (49) other end fixed connection, first pond of washing air (12) upper right side is fixed to be equipped with second breather pipe (43), second breather pipe (43) with be connected with between intake pipe (48) first breather pipe (27).
6. The stern gas purification apparatus of claim 5, wherein: carbon dioxide recovery unit is including fixing third bearing (40) in second air wash pond (14), second air wash pond (14) inner structure with first air wash pond (12) are unanimous, outlet duct (35) with second air wash pond (14) be connected with between built-in trachea (42) first breather pipe (27), second air wash pond (14) second breather pipe (43) upper end is fixed and is equipped with first breather pipe (27), be equipped with on second breather pipe (43) first breather pipe (27) access to outside hull (10).
7. The purifying method of a stern gas purifying apparatus as claimed in claim 6, wherein: the method comprises the following steps:
s1: the high-temperature waste gas is fully contacted with the granular adsorption oil (33) with higher viscosity so that the particles in the high-temperature waste gas are separated from the high-temperature waste gas by oil bonding;
s2, after the high-temperature waste gas enters the urea solution (34), the temperature of the waste gas enables urea to generate hydrolysis and pyrolysis reaction to generate ammonia gas, the ammonia gas and the high-temperature mixed waste gas containing nitrogen oxides rise together to contact with the catalyst in the catalyst grid (18), the nitrogen oxides are reacted into nitrogen gas under the action of the catalyst, the redundant ammonia gas is reduced into nitrogen gas, and meanwhile, the sulfur oxides and the carbon oxides are fully oxidized into sulfur dioxide and carbon dioxide in a high-temperature environment;
s3, after the high-temperature waste gas enters lime water in the first gas washing pool (12), reacting sulfur dioxide and carbon dioxide contained in the high-temperature waste gas with the lime water to generate calcium sulfate and calcium bicarbonate, wherein the calcium sulfate is not decomposed when being heated, and the calcium bicarbonate is easily decomposed when being heated to generate carbon dioxide;
s4: when the low-temperature waste gas enters the lime water in the second gas washing tank (14), only carbon dioxide in the residual nitrogen, carbon dioxide and other harmless gases in the waste gas reacts with the lime water to generate calcium bicarbonate, and the calcium bicarbonate continuously reacts with the carbon dioxide to generate calcium carbonate under the normal-temperature environment, so that the absorption treatment of the carbon dioxide is completed.
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| CN202111272861.1A CN114000935A (en) | 2021-10-29 | 2021-10-29 | Tail gas purification device and purification method of stern gas |
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| CN202111272861.1A CN114000935A (en) | 2021-10-29 | 2021-10-29 | Tail gas purification device and purification method of stern gas |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904735A (en) * | 1972-03-07 | 1975-09-09 | Union Carbide Corp | Process for the selective removal of sulfur dioxide from effluent gases |
| GB1472985A (en) * | 1973-07-16 | 1977-05-11 | Fuji Kasui Eng Co Ltd | Process for removing sulphur oxides and nitrogen oxides from combustion exhaust gas |
| DE10340349A1 (en) * | 2003-09-02 | 2005-03-24 | Basf Ag | Treating combustion gases containing sulfur- and carbon dioxides, e.g. from power stations, by two-stage scrubbing with aqueous calcium hydroxide or carbonate then e.g. amine or potassium hydroxide solution |
| CN101157005A (en) * | 2007-07-31 | 2008-04-09 | 郑州大学 | A processing method and apparatus of coal-firing gas |
| CN108691608A (en) * | 2018-05-04 | 2018-10-23 | 芜湖渤江智能科技有限公司 | A kind of ship shipping exhaust gas processing device |
| CN211737253U (en) * | 2020-03-06 | 2020-10-23 | 福建永强力加动力设备有限公司 | Tail gas cooling treatment device |
-
2021
- 2021-10-29 CN CN202111272861.1A patent/CN114000935A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904735A (en) * | 1972-03-07 | 1975-09-09 | Union Carbide Corp | Process for the selective removal of sulfur dioxide from effluent gases |
| GB1472985A (en) * | 1973-07-16 | 1977-05-11 | Fuji Kasui Eng Co Ltd | Process for removing sulphur oxides and nitrogen oxides from combustion exhaust gas |
| DE10340349A1 (en) * | 2003-09-02 | 2005-03-24 | Basf Ag | Treating combustion gases containing sulfur- and carbon dioxides, e.g. from power stations, by two-stage scrubbing with aqueous calcium hydroxide or carbonate then e.g. amine or potassium hydroxide solution |
| CN101157005A (en) * | 2007-07-31 | 2008-04-09 | 郑州大学 | A processing method and apparatus of coal-firing gas |
| CN108691608A (en) * | 2018-05-04 | 2018-10-23 | 芜湖渤江智能科技有限公司 | A kind of ship shipping exhaust gas processing device |
| CN211737253U (en) * | 2020-03-06 | 2020-10-23 | 福建永强力加动力设备有限公司 | Tail gas cooling treatment device |
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