CN104998543B - A kind of waste gas processing method peculiar to vessel and its device - Google Patents
A kind of waste gas processing method peculiar to vessel and its device Download PDFInfo
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- CN104998543B CN104998543B CN201510369761.9A CN201510369761A CN104998543B CN 104998543 B CN104998543 B CN 104998543B CN 201510369761 A CN201510369761 A CN 201510369761A CN 104998543 B CN104998543 B CN 104998543B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a kind of marine exhaust processing method and its device, include the following steps：Dust removal by filtration, is passed through methane gas mixing, using zeolite nitrogen and desulfurization, elution, monitoring feedback.Using methane as reducing gas, effectively marine exhaust can be made to reach discharge standard by the combination of each step above.The invention also discloses a kind of marine exhaust processing unit, including control cabinet, dust-extraction unit, gas mixing cabinet, methane storing cabinet, zeolite reaction member, heating unit, elution unit, on-line monitoring unit, Slag recovering groove, dust-extraction unit is connected with Slag recovering groove；Gas mixing cabinet is connected with zeolite reaction member；Zeolite reaction member and heating unit are in same cabinet；Zeolite reaction member is connected with elution unit.The apparatus structure is compact, operation operation is flexible, and high catalytic efficiency, cost is low, prevents harmful gases diffusion.
Description
Technical field
The present invention relates to environmental technology field, more particularly to a kind of waste gas processing method peculiar to vessel and its device.
Background technology
The discharge of harmful substance in marine exhaust is to cause a main source of atmosphere pollution, as environmental protection is asked
The increase increasingly of importance is inscribed, reducing the discharge of nuisance becomes one important development direction of marine exhaust in the world today.Cause
This, the pollution that marine exhaust is brought increasingly is paid attention to be subject to international community, the MARPOL that International Maritime Organization (IMO) formulates
Supplemental provisions V I《Prevent ship from causing air pollution regular》Come into force on January 1st, 2000.More stringent NOx discharges
The limitation standard Tier III of amount also will be formally effective in 2021.The discharge of nitrogen oxides and oxysulfide is subject to more and more tighter
The control of lattice.Achieve and be constantly in progress currently for the technology in power plant, chemical plant exhaust-gas treatment.Desulfurization technology is mainly wrapped
Include：Wet desulphurization, dry desulfurization and semi-dry desulphurization；Denitration technology mainly includes：Selective catalytic reduction (SCR) and choosing
Selecting property noncatalytic reduction (SNCR).Wherein, selective catalytic reduction (SCR) is used as a kind of effective technology, in boiler, burns
The fixed pollution sources such as stove and power plant are burnt to be widely used.
The characteristics of due to marine exhaust itself, make land waste gas treatment equipment more ripe at present be not directly applicable ship
Oceangoing ship.Be mainly manifested in ship flue gas scale is smaller, temperature are low, exhaust fluctuation is big, in flue gas containing uncombusted oil and carbon black etc.
Feature, proposes processing equipment specific requirement.Processing equipment must it is compact, take up space small, light-weight, reactant is easy to store up
Deposit, the energy consumption electricity consumption value of processing equipment will be low.Above feature causes the processing of ship flue gas can not directly apply boiler of power plant
Desulphurization denitration technology and equipment, this just becomes one of professional problem of fume treatment.
For the zeolite molecular sieve catalyst table in terms of desulphurization denitration at the same time of selective catalytic reduction (SCR) exploitation
Excellent activity is showed, Cu is found from Iwamoto in 1986 etc.2+Crossover zeolite molecular sieve catalyst Cu/ZSM-5 can be urged effectively
Change since decomposing NO, domestic and foreign scholars have carried out the structure of ZSM-5 catalyst, preparation, catalytic mechanism, modification etc. largely to grind
Study carefully.Zeolite molecular sieve catalyst generally can apply traditional NH3 as reducing agent, this patent use CH4 as reproducibility
Gas, the catalytic activity that CH4 possesses is high, effectively prevent NH3 as ammonium salt corrosion equipment caused by reducing agent and causes catalysis
Agent is poisoned.Also, main components of the CH4 as natural gas, cost is low, and rich reserves, are easily obtained.Zeolite molecular sieve possesses silicon
Aluminium is wider than excursion, specific surface area is big, crystallinity and total acid content are high, hydrothermal stability and absolute acid stability are strong, long lifespan adds again
The advantages that its upper superior shape selective catalysis effect and relatively low knot carbon amounts, at present, both at home and abroad to zeolite molecular sieve desulphurization denitration
Research is also being carried out in a deep going way, including the exploitation of various high effective zeolite molecular sieves, the research of desulfurization removing nitric mechanism and low-temperature catalyzed
Exploitation of zeolite etc..Zeolite molecular sieve is shown good as a kind of efficient new catalytic material in terms of exhuast gas desulfurization denitration
Good effect, is expected to become a kind of important catalyst for treating waste gas.
The content of the invention
A kind of present invention seek to address that above problem, there is provided emission-control equipment peculiar to vessel.
A kind of waste gas processing method peculiar to vessel, includes the following steps：
1) dust removal by filtration：Exhaust gas peculiar to vessel is led in dust-extraction unit to the solid suspended particle removed in exhaust gas, and is collected residual
Slag is to Slag recovering groove；
2) gas mixing：Gas after filtering is passed into the methane storing cabinet containing less than 1% methane, make exhaust gas with
Methane is sufficiently mixed；
3) zeolite nitrogen and desulfurization is used：The reaction cabinet of Zeolite catalytic materials will be passed into the well-mixed exhaust gas of methane
In, desulfurization, denitrogenation, denitration process are carried out at a certain temperature, and reaction is as follows：
a)2NO=N2+O2
b)2NO+O2=2NO2
c)2SO2+O2=2SO3
d)CH4+2O2=CO2+2H2O
e)CH4+2NO2=N2+CO2+2H2O；
4) elute：Waste gas absorption elution is carried out using spray mode again, removes SO3With part CO2, while to high temperature cigarette
Gas is cooled down, and completes waste gas purification, and reaction principle is as follows：
a)SO3+OH—=H+ + SO4 2—
b)CO2+OH—=HCO3 —
c)HCO3 —= H+ + CO3 2— ；
5) monitoring feedback：The air purified is passed into monitoring unit, monitoring unit the results are shown on control cabinet,
When reaching the discharge standard of exhaust gas, according to the related request of IMO, exhaust gas discharge should reach SO2（ppm）/CO2（%v/v）21.7 with
Under, according to Tier III, emission control area（ECAs ）Ship NOx emission of the intrinsic motivation rotating speed less than 130rpm is less than 3.4g/
The ship NOx emission of KWh, 130rpm -2000rpm are less than 9*n(-0.2)G/KWh, the ship NOx emission more than 2000rpm are low
In 2.0 g/KWh）, when the result that detection unit detects reach the above row subscript it is punctual；Control cabinet would automatically turn on air bleeding valve
Exhaust gas is discharged, if accurate recirculate not up to standard handles exhaust gas.
Further, the step（1）Middle solid particle residue is unified ashore to be handled.
Further, the step（3）Middle artificial zeolite can be ZSM-5 types, beta types, A types, X-type, Y types, mercerising boiling
One or more in stone molecular sieve, be loaded with zeolite Cu, Ni, Mn, Co, Fe, Ce, Cr, Zn, Ga, Mo, Ru, Rh, Pd, Ag,
One or more in In, Sn, Re, Ir and Pt.
Further, the step（3）Between middle certain temperature is 300 DEG C~600 DEG C.
Further, the step（4）Middle eluting liquid is using natural sea-water.
A kind of emission-control equipment peculiar to vessel, it is characterised in that including：Dust-extraction unit, gas mixing cabinet, methane storing cabinet,
Zeolite reaction member, heating unit, elution unit, on-line monitoring unit, control cabinet and air bleeding valve, the methane storing cabinet, boiling
Stone reaction member, heating unit, elution unit, on-line monitoring unit are all positioned in control cabinet, dust-extraction unit and Slag recovering
Groove is connected；Gas mixing cabinet is connected with zeolite reaction member by gas pipeline；Zeolite reaction member is with eluting unit phase
Connection, in same cabinet, the heating unit can be electric heating tube or electric heating wire for zeolite reaction member and heating unit
Common electric heater unit；The elution unit elutes for sprayed sea water.
Further, the control cabinet can be one kind in PLC, DSP, ARM, microcontroller.
Further, control cabinet is according to the feedback of monitoring unit monitoring result, adjusts being passed through for methane in methane cabinet
Amount, whether heating-up temperature, elution unit spray amount and the exhaust emission valve of heating unit are opened, below standard to carry out secondary place
Reason.
The beneficial effects of the invention are as follows：
The equipment has that operation operation is flexible, and high catalytic efficiency is compact-sized, prevents the diffusion of pernicious gas, environmental protection, into
This low advantage.The present invention is sufficiently mixed using methane with the gas after dust removal by filtration first, methane is become lower and is reacted together
Reducing agent, mixed gas passes through zeolite reaction member, catalytic reaction carried out at suitable temperature again, then using natural
Seawater is eluted, finally also not up to standard to handle again into wasted nickel catalyst of passing through, qualified discharge.The denitration rate of the present invention is stablized
98%, desulfurization degree stabilization is more than 95%, the final discharge standard realized discharge exhaust gas and reach IMO and national regulation.
Brief description of the drawings
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the principle of the present invention and process flow chart
In figure：1- control cabinets；2- dust-extraction units；3- gas mixing cabinets；4- methane storing cabinets；5- zeolite reaction members；6-
Heating unit；7- elutes unit；8- monitoring unit；9- Slag recovering grooves；A- connecting cables；B- exhaust gas entrance pipelines；C- is switched
Valve；D- liquid inlets；E- liquid outlets；F- gas vents；G- connection cables；Residue after H- filterings.
Embodiment
Embodiment 1
As shown in Figure 1, marine exhaust processing method in the present invention, its course of work are：Exhaust gas is entered by exhaust gas entrance to be removed
Dirt device, in dust-extraction unit, solid suspended particle is removed and is discharged into Slag recovering groove, and exhaust gas is then in gas mixing after dedusting
After being sufficiently mixed in cabinet with the methane in methane storing cabinet, the preferred value of methane content is 0.2%--0.5% in methane cabinet, mixing
Gas enter zeolite reaction member, device for simultaneous heating heats zeolite reaction member, and reaction temperature is heated to 300
~ 400 DEG C, nitrogen oxides and sulfur dioxide are converted removal under zeolite catalysis, and the exhaust gas products after conversion enter elution unit,
SO in exhaust gas3With part CO2It is purified again by Absorption by Sea Water, exhaust gas peculiar to vessel.Purified exhaust gas enter monitoring unit into
Row on-line monitoring.Monitoring unit on-line includes monitoring result to automatically turn on air bleeding valve, exhaust gas up to standard in control cabinet, control cabinet
Discharge.
Embodiment 2
Exhaust gas enters dust-extraction unit by exhaust gas entrance, and the solid suspended particle in removing exhaust gas is removed in dust-extraction unit, is screened out
Particle be directly discharged in Slag recovering groove.Exhaust gas enters gas mixing cabinet and methane blended after dedusting.
In the zeolite reaction member, ZSM-5 artificial zeolite's molecular sieves, loaded Cu, Ni on this zeolite, at 530 DEG C
At a temperature of, containing 0.2% NO, 0.15% SO2,0.25% O2 in simulated exhaust, 0.35% is passed through in methane storing cabinet
CH4, can simultaneous SO_2 and NO removal.Through wasted nickel catalyst, denitration rate stabilization is 98%, and desulfurization degree stabilization is more than 95%.Key reaction
Principle is：
2NO=N2+O2
2NO+O2=2NO2
2SO2+O2=2SO3
CH4+2O2=CO2+2H2O
CH4+2NO2=N2+CO2+2H2O
In the elution unit, main component is natural sea-water, absorbs exhaust-gas treatment reaction production using spray mode
Thing, produces a small amount of acid solution.High-temperature flue gas is cooled down at the same time, key reaction principle is：
SO3+OH—=H+ + SO4 2—
CO2+OH—=HCO3 —
HCO3 —= H+ + CO3 2—
The Slag recovering groove, main function are the solid particle residues in collecting dust-removing device, it is unified on the coast into
Row processing.
Other embodiment is same as above.
It is limitation of the present invention that described above, which is not, and the present invention is also not limited to the example above, the art
The variations, modifications, additions or substitutions that technical staff is made in the essential scope of the present invention, should also belong to the protection of the present invention
Scope.
Claims (8)
1. a kind of waste gas processing method peculiar to vessel, includes the following steps：
(1) dust removal by filtration：Exhaust gas peculiar to vessel is led in dust-extraction unit to the solid suspended particle removed in exhaust gas, and collects residue and arrives
Slag recovering groove；
(2) gas mixing：Gas after filtering is passed into the methane storing cabinet containing less than 1% methane, makes exhaust gas and first
Alkane is sufficiently mixed；
(3) zeolite nitrogen and desulfurization is used：It will be passed into the well-mixed exhaust gas of methane in the reaction cabinet of Zeolite catalytic materials,
Desulfurization, denitrogenation, denitration process are carried out under certain temperature, reaction is as follows：
2NO=N2+O2
2NO+O2=2NO2
2SO2+ O2=2SO3
CH4+2O2=CO2+2H2O
CH4+2NO2=N2+CO2+2H2O；
(4) elute：Waste gas absorption elution is carried out using spray mode again, removes SO3With part CO2, while to high-temperature flue gas into
Row cooling, completes waste gas purification, and reaction principle is as follows：
SO3+OH-=H++SO4 2-
CO2+OH-=HCO3 -
HCO3 -=H++CO3 2-；
(5) monitoring feedback：The air purified is passed into monitoring unit, monitoring unit is reached the results are shown on control cabinet
To exhaust gas discharge standard when, control cabinet would automatically turn on air bleeding valve discharge exhaust gas, if not up to standard, accurate to recirculate processing useless
Gas.
A kind of 2. waste gas processing method peculiar to vessel according to claim 1, it is characterised in that solid particle in the step (1)
Residue is unified ashore to be handled.
A kind of 3. waste gas processing method peculiar to vessel according to claim 1, it is characterised in that artificial zeolite in the step (3)
For the one or more in ZSM-5 types, beta types, A types, X-type, Y types, mordenite molecular sieve, be loaded with zeolite Cu, Ni,
One or more in Mn, Co, Fe, Ce, Cr, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt.
A kind of 4. waste gas processing method peculiar to vessel according to claim 1, it is characterised in that certain temperature in the step (3)
Between 300 DEG C~600 DEG C.
A kind of 5. waste gas processing method peculiar to vessel according to claim 1, it is characterised in that elution liquid in the step (4)
Body is using natural sea-water.
A kind of 6. emission-control equipment peculiar to vessel, it is characterised in that including：Dust-extraction unit, gas mixing cabinet, methane storing cabinet, boiling
Stone reaction member, heating unit, elution unit, on-line monitoring unit, control cabinet and air bleeding valve, the methane storing cabinet, zeolite
Reaction member, heating unit, elution unit, on-line monitoring unit are all positioned in control cabinet, dust-extraction unit and Slag recovering groove
It is connected；Gas mixing cabinet is connected with zeolite reaction member by gas pipeline；Zeolite reaction member is connected with elution unit
Connect, in same cabinet, the heating unit is electric heating tube or the common electricity of electric heating wire for zeolite reaction member and heating unit
Heating unit；The elution unit elutes for sprayed sea water.
A kind of 7. emission-control equipment peculiar to vessel according to claim 6, it is characterised in that the control cabinet be PLC, DSP,
One kind in ARM, microcontroller.
8. a kind of emission-control equipment peculiar to vessel according to claim 6, it is characterised in that control cabinet is monitored according to monitoring unit
As a result feedback, adjusts the intake of methane in methane cabinet, the heating-up temperature of heating unit, elution unit spray amount and
Whether exhaust emission valve is opened, below standard carry out after-treatment.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106196013A (en) * | 2016-07-30 | 2016-12-07 | 史默迪 | Use the pluralities of fuel high-temperature gasification boiler of reducing process denitration |
| CN106914272A (en) * | 2017-03-08 | 2017-07-04 | 湖南云平环保科技有限公司 | Desulphurization denitration catalyst of CuMnCePt/ZSM 5 and preparation method thereof |
| CN107389868A (en) * | 2017-08-08 | 2017-11-24 | 南京埃森环境技术股份有限公司 | A kind of ship tail gas on-line monitoring and control system |
| CN111948169B (en) * | 2020-06-12 | 2023-11-03 | 江苏奥畋工程科技有限公司 | Ship exhaust gas online monitoring and analyzing system |
| CN113274854A (en) * | 2021-05-31 | 2021-08-20 | 南通理工学院 | Ship tail gas desulfurization and denitrification system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364068A (en) * | 2011-06-28 | 2012-02-29 | 顾忠华 | Tail gas exhausting and processing system for ship |
| CN102989466A (en) * | 2012-12-27 | 2013-03-27 | 北京石油化工学院 | Flue gas desulfurization and denitrification catalyst for reduction method and applications of catalyst |
| CN103480272A (en) * | 2013-10-01 | 2014-01-01 | 王脯胜 | Dust-removing, denitration and desulfurization process and device for flue gas of glass kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006026525A (en) * | 2004-07-15 | 2006-02-02 | Babcock Hitachi Kk | Exhaust gas treatment system |
| CN201940168U (en) * | 2011-02-17 | 2011-08-24 | 大连海事大学 | Marine desulfurization system using magnesium-based seawater method |
| CN204816228U (en) * | 2015-06-30 | 2015-12-02 | 青岛海德威科技有限公司 | Marine exhaust treatment device |
-
2015
- 2015-06-30 CN CN201510369761.9A patent/CN104998543B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364068A (en) * | 2011-06-28 | 2012-02-29 | 顾忠华 | Tail gas exhausting and processing system for ship |
| CN102989466A (en) * | 2012-12-27 | 2013-03-27 | 北京石油化工学院 | Flue gas desulfurization and denitrification catalyst for reduction method and applications of catalyst |
| CN103480272A (en) * | 2013-10-01 | 2014-01-01 | 王脯胜 | Dust-removing, denitration and desulfurization process and device for flue gas of glass kiln |
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