CN207076345U - For removing the marine exhaust processing unit of sulfur and nitrogen oxides simultaneously - Google Patents
For removing the marine exhaust processing unit of sulfur and nitrogen oxides simultaneously Download PDFInfo
- Publication number
- CN207076345U CN207076345U CN201720680894.2U CN201720680894U CN207076345U CN 207076345 U CN207076345 U CN 207076345U CN 201720680894 U CN201720680894 U CN 201720680894U CN 207076345 U CN207076345 U CN 207076345U
- Authority
- CN
- China
- Prior art keywords
- layer cavity
- exhaust
- reaction tower
- valve
- internal layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of marine exhaust processing unit for being used to remove sulfur and nitrogen oxides simultaneously, including the first exhaust pipe, blender and reaction tower, the exhaust outlet connection of first exhaust pipe and diesel engine, the flow direction of the blender and the reaction tower along waste gas is successively set in first exhaust pipe, urea liquid spray gun is provided with the blender, the reaction tower includes internal layer cavity and outer layer cavity, the inlet end of the internal layer cavity and the inlet communication of the reaction tower, the exhaust end of the internal layer cavity connects with the inlet end of the outer layer cavity, the exhaust end of the outer layer cavity and the outlet of the reaction tower, flow direction of the internal layer cavity along waste gas is sequentially provided with pre-oxidation portion and desulfurization portion, the outer layer cavity is provided with denitration portion.Pre-oxidation portion, desulfurization portion and denitration portion are integrated in a reaction tower by the utility model, are integrally occupied little space, installation cost is low, easy for installation.
Description
Technical field
The technical field of marine exhaust processing is the utility model is related to, is used to go sulphur removal to aoxidize simultaneously especially with regard to one kind
The marine exhaust processing unit of thing and nitrogen oxides.
Background technology
With the development of economic globalization, international trade and Shipping industry are quickly grown, and the tonnage of ship is continuously increased, with
And come be increasing sharply for Marine Diesel Engine's Harmful Exhaust Emission amount, marine exhaust discharge caused by environmental pollution be on the rise,
Wherein endangered with the discharge of nitrogen oxides (NOx) and oxysulfide (SOx) to caused by environment and the mankind the most direct.In order to subtract
Atmosphere pollution caused by few marine exhaust discharge, International Maritime Organization (IMO) and its Maritime Environment Protection Committee (MEPC) are right
The discharge standard of boat diesel engine nitrogen oxides and oxysulfide has carried out strict limitation.
At present, what IMO approved disclosure satisfy that the nitrogen oxides emission-reduction technology of the discharge standards of Tier III mainly has two kinds：Selection
Property catalysis reduction (selective catalytic reduction, SCR) technology and waste gas recycling (exhaust gas
Recirculation, EGR) technology.Wherein, SCR technology is turned the NOx in waste gas in the presence of catalyst using reducing agent
Turn to the nitrogen and water of environmental sound, the technology relative maturity, emission reduction effect is good, but processing unit is bulky, operation and
Maintenance cost is also higher, and the principle of EGR technology is that cylinder will be reintroduced back to after engine section pump-down process, increases in cylinder
The specific heat capacity of gaseous mixture, compression terminal temperature and maximum combustion temperature in cylinder are reduced, reduce NO_x formation so as to reach
Purpose, the system mounting cost and operating cost are much smaller than SCR system, but need to transform engine of boat and ship, system
Washes can be also produced in running, the useful space of ship can also be taken by installing wastewater treatment equipment additional.
Ship SOx emission-reduction technologies mainly include using two kinds of Low Sulfur Fuel Oil and waste gas cleaning technique.Wherein, fired using low-sulfur
Oil is the method for most directly meeting IMO emission requests, and without carrying out larger change to ship, but marine low-sulfur fuel price is held high
It is expensive, it is too high using Low Sulfur Fuel Oil cost, while Low Sulfur Fuel Oil viscosity is low, poor lubrication the shortcomings of certain damage can be caused to engine
Evil.As another effective ways for removing SOx in marine exhaust of IMO accreditations, waste gas cleaning technique is mainly by combustion
The waste gas caused by low-quality high-sulfur heavy oil is cleaned, and removes SOx therein, meets requirements of the IMO about sulphur content of fuel oil, is given up
Gas cleaning technique is broadly divided into two major classes：Wet desulphurization and dry desulfurization, wherein, Wet Flue Gas Desulfurization Technique includes again：Open loop method
(Open Loop), closed loop method (Closed Loop) and compound (Hybrid) wet desulphurization, desulfuration efficiency is high, technology maturation
The problem of stable, but wash mill is larger there is also volume, and operation and maintenance need certain expense, and the advantages of dry method desulfuration system
It is：Energy consumption is low, does not need water treatment facilities, suitable for any region to discharging water sensitive, can be tied well with SCR denitration
Close.
Based on above-mentioned processing mode, be generally all at present directly using two complete equipments even more complete equipments respectively to NOx and
SOx is first post-processed, the desulfurization after elder generation's denitration by way of waste gas series connection, the processing method equipment volume however, waste gas is connected
It is huge, a large amount of ship useful spaces are taken, back pressure is high, and engine work is had a great influence, equipment investment and operating cost
It is all very high.
Utility model content
The purpose of this utility model, which is to provide, a kind of to be used for while removes the marine exhaust of sulfur and nitrogen oxides
Processing unit, occupy little space, installation cost it is low.
The utility model provides a kind of marine exhaust processing unit for being used to remove sulfur and nitrogen oxides simultaneously, institute
Stating marine exhaust processing unit includes the first exhaust pipe, blender and reaction tower, first exhaust pipe and diesel engine
Exhaust outlet connects, and the flow direction of the blender and the reaction tower along waste gas is successively set on first exhaust pipe
In, urea liquid spray gun is provided with the blender, the reaction tower includes internal layer cavity and outer layer cavity, the internal layer cavity
Inlet end and the reaction tower inlet communication, the inlet end of the exhaust end of the internal layer cavity and the outer layer cavity connects
It is logical, the exhaust end of the outer layer cavity and the outlet of the reaction tower, flow direction of the internal layer cavity along waste gas according to
Secondary to be provided with pre-oxidation portion and desulfurization portion, the outer layer cavity is provided with denitration portion.
Further, the pre-oxidation portion is that bipolar electrode be directed to pin high-voltage corona discharge unit, including electrode plate with high voltage and
Grounding electrode plate, the electrode plate with high voltage is identical with the grounding electrode plate size, the electrode plate with high voltage and the ground connection electricity
Pole plate is provided with multiple rows of draw point, between the sophisticated draw point tip with the grounding electrode plate of draw point on the electrode plate with high voltage
It is relative one by one.
Further, the electrode plate with high voltage and the area of the grounding electrode plate are 500mm × 1000mm, Mei Ge electricity
50-100 row's draw points are welded with pole plate, the number for often arranging draw point is that the distance between 10-50 roots, adjacent draw point are 10-50mm,
The length of every draw point is 20-50mm, a diameter of 1mm of every draw point, draw point tip on the electrode plate with high voltage and therewith
The distance between draw point tip in corresponding grounding electrode plate is 50-80mm, and the draw point is 316 draw points.
Further, the desulfurization portion is desulfurizing agent packing layer, and the desulfurizing agent packing layer includes active component by hydrogen-oxygen
Change the desulfurizing agent that calcium, magnesium hydroxide and coke are formed, the saturation Sulfur capacity of the desulfurizing agent is 60%-70%.
Further, the flow direction of the denitration portion interior edge waste gas is sequentially provided with three layers of denitrating catalyst, the denitration
Catalyst is corrugated, cavernous fiber titanium structure.
Further, waste gas water conservancy diversion is provided between the inlet end of the exhaust end of the internal layer cavity and the outer layer cavity
Plate.
Further, in addition to the second exhaust pipe, the first valve and the second valve, first exhaust pipe pass through institute
The exhaust outlet that the first valve is stated with the diesel engine is connected, and second exhaust pipe passes through second valve and the diesel oil
The exhaust outlet connection of machine, first valve are controlled with second valve by YE, and first valve is described
Close during the second valve opening and opened when second valve is closed.
Further, the import of the reaction tower is located at the top of the reaction tower, and the outlet of the reaction tower is located at institute
Reaction tower is stated in the side wall of top side, the internal layer cavity is cylindrical chamber, and the top of the internal layer cavity is air inlet
End, the bottom of the internal layer cavity is exhaust end, and the outer layer cavity is the annular housing coaxial with the internal layer cavity, described
The bottom of outer layer cavity is inlet end, and the top of the outer layer cavity is exhaust end, the internal layer cavity and the outer layer cavity
Connectivity part in a ring.
Further, soot blower is provided with the reaction tower, the bottom of the reaction tower is provided with collecting tank, the collecting tank
Entrance be provided with valve.
Further, first exhaust pipe is additionally provided with the 3rd valve and the 4th valve, and the 3rd valve is located at institute
State between blender and the reaction tower, the 4th valve is located at the exhaust end of first exhaust pipe, the reaction tower
Air-introduced machine is provided between the 4th valve.
In the marine exhaust processing unit for being used to remove sulfur and nitrogen oxides of the utility model embodiment simultaneously,
Reaction tower is provided with internal layer cavity and outer layer cavity, and flow direction of the internal layer cavity along waste gas is sequentially provided with pre-oxidation portion and desulfurization
Portion, outer layer cavity are provided with denitration portion, whole waste gas treatment process is concentrated in a reaction tower and carry out, device integrally takes sky
Between it is small, installation cost is low, easy for installation, the gas after pre-oxidation carries out desulphurization denitration processing successively, nitrogen oxides and sulphur oxidation
The removal efficiency of thing is high.
Brief description of the drawings
Fig. 1 is to be used to remove simultaneously at the marine exhaust of sulfur and nitrogen oxides in the utility model one embodiment
Manage the structural representation of device.
Embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken,
Below in conjunction with accompanying drawing and preferred embodiment, to specific embodiment of the present utility model, structure, feature and its effect, specifically
It is bright as after.
Firstly the need of explanation, " before " with being made with flow direction of the waste gas in pipeline " afterwards " in this specification
For reference direction, " afterwards " refers to positioned at the downstream of exhaust gas flow direction.
Fig. 1 is to be used to remove simultaneously at the marine exhaust of sulfur and nitrogen oxides in the utility model one embodiment
Manage the structural representation of device.As shown in figure 1, the ship of the present utility model for being used to remove sulfur and nitrogen oxides simultaneously
Emission-control equipment (hereinafter referred to as " processing unit ") includes the first exhaust pipe 2, blender 3 and reaction tower 6, the first flue gas leading
Road 2 is connected with the exhaust outlet of diesel engine 1, and the flow direction of blender 3 and reaction tower 6 along waste gas is successively set on the first flue gas leading
In road 2, urea liquid spray gun 31 is provided with blender 3, reaction tower 6 includes internal layer cavity 621 and outer layer cavity 622, inner layer cavity
The inlet end of body 621 connects with the import 61 of reaction tower 6, and the exhaust end of internal layer cavity 621 connects with the inlet end of outer layer cavity 622
Logical, the exhaust end of outer layer cavity 622 connects with the outlet 610 of reaction tower 6, the flow direction of the interior edge waste gas of internal layer cavity 621 according to
It is secondary to be provided with pre-oxidation portion 63 and desulfurization portion 64, it is provided with denitration portion 65 in outer layer cavity 622.In this way, the waste gas discharged from diesel engine 1
Enter reaction tower 6 after being well mixed in blender 3 with ammonia, and pre-oxidation portion 63, the desulfurization portion passed through successively in reaction tower 6
64 drain into air with the removing nitrogen oxides of denitration portion 65 and oxysulfide, the waste gas after processing, by the way that reaction tower 6 is divided into
Internal layer cavity 621 and outer layer cavity 622, make whole waste gas treatment process concentrate in a reaction tower and carry out, device integrally accounts for
With space is small, installation cost is low, easy for installation, and the removal efficiency of nitrogen oxides and oxysulfide is high.
Specifically, the import 61 of reaction tower 6 is located at the top of reaction tower 6, and the outlet 610 of reaction tower 6 is located at reaction tower 6 and leaned on
In the side wall of nearly top side, internal layer cavity 621 is cylindrical chamber, and the top of internal layer cavity 621 is inlet end, internal layer cavity
621 bottom is exhaust end, and pre-oxidation portion 63 is located at the top of internal layer cavity 621, and desulfurization portion 64 is located at the bottom of internal layer cavity 621
Portion, outer layer cavity 622 are the annular housing coaxial with internal layer cavity 621, and the bottom of outer layer cavity 622 is inlet end, outer layer chamber
The top of body 622 is exhaust end, and the connectivity part of internal layer cavity 621 and outer layer cavity 622 is in a ring.
Urea liquid spray gun 31 is double-current spray gun body.Specifically, can be fully by 40% urea liquid using double-current spray gun body
Atomization, ensure that the atomizing particle size of urea liquid is controlled at 40 μm, the urea liquid after atomization is broken down into ammonia in blender 3
Gas, and be sufficiently mixed with waste gas, it is preferred that blender 3 selects 316 stainless steels, a diameter of Φ 700- Φ 1000.
Pre-oxidation portion 63 is that bipolar electrode is directed to pin high-voltage corona discharge unit, and the bipolar electrode is directed to pin high-voltage corona discharge list
Member includes electrode plate with high voltage 631 and grounding electrode plate 632, and electrode plate with high voltage 631 is identical with the size of grounding electrode plate 632, high pressure
Battery lead plate 631 and grounding electrode plate 632 are provided with multiple rows of draw point, draw point tip and grounding electrode plate on electrode plate with high voltage 631
It is relative one by one between draw point tip on 632.Preferably, electrode plate with high voltage 631 and the area of grounding electrode plate 632 are
500mm × 1000mm, is welded with 50-100 row's draw points on each battery lead plate, and the number for often arranging draw point is 10-50 roots, adjacent draw point
The distance between be 10-50mm, the length of every draw point is 20-50mm, a diameter of 1mm of every draw point, electrode plate with high voltage 631
On the sophisticated and corresponding grounding electrode plate 632 of draw point on the distance between draw point tip be 50-80mm, draw point is
316 draw points.In use, electrode plate with high voltage 631 is connected into energization with high-voltage DC power supply, make on two pieces of pole plates between draw point tip
Generation corona discharge, the process can produce substantial amounts of O, N, OH, O2、HO2Deng free radical, these free radicals can be by waste gas
95% NO is oxidized to NO2, while by the SO in waste gas2It is oxidized to SO3, these courses of reaction can strengthen the absorption of subsequent reactions
Efficiency, improve nitrogen oxides of exhaust gas and the removal efficiency of oxysulfide.
Desulfurization portion 64 is desulfurizing agent packing layer.In the present embodiment, desulfurizing agent packing layer includes active component by hydroxide
The desulfurizing agent that calcium, magnesium hydroxide and coke are formed, the saturation Sulfur capacity of desulfurizing agent is 60%-70%, and waste gas passes through pre-oxidation portion 63
After pre-oxidation, into the desulfurization portion 64 of the bottom of 6 internal layer cavity of reaction tower 621 (i.e. the downstream of gas flow direction) with it is de-
Sulphur agent packing layer is acted on, and because desulfurizing agent is rich in, pore, specific surface area are big, active high, the Sulfur capacity height of active ingredient, thus
Desulfuration efficiency is high.In addition, the process that desulfurizing agent absorbs the oxysulfide in waste gas is exothermic reaction, the amount of heat discharged makes
The temperature rise of waste gas, is effectively ensured the optimum temperature that denitration reaction is carried out subsequently in outer layer cavity 622.
Denitrating catalyst is provided with denitration portion 65.In the present embodiment, the flow direction of the interior edge waste gas of denitration portion 65 is successively
Provided with three layers of denitrating catalyst, denitrating catalyst is corrugated, cavernous fiber titanium structure, is imitated with up to 99% denitration
Rate, service life can reach 10000 hours.
In the embodiment of the utility model one, between the exhaust end of internal layer cavity 621 and the inlet end of outer layer cavity 622
Provided with waste gas deflector 67, waste gas deflector 67 is the hemisphere to be arched upward positioned at the bottom of internal layer cavity 621 and inner layer cavity 621
Shape plate or conical plate, can be well into outer layer cavity under the water conservancy diversion of waste gas deflector 67 by the waste gas that internal layer cavity 621 is discharged
In 622.
In the embodiment of the utility model one, soot blower 69 is provided with reaction tower 6, the bottom of reaction tower 6, which is provided with, collects
Tank 8, the entrance of collecting tank 8 are provided with valve 7.Specifically, soot blower 69 is pointed to outer layer cavity 622 using high pressure shock-wave ash blowing
In denitrating catalyst surface and duct in dust, greasy filth purged, prevent cigarette ash in denitrating catalyst surface attachment
Cause denitrating catalyst activity to reduce, purge the ash content to get off and impurity and collecting tank 8 is entered by valve 7, valve 7 is preferably electricity
Movable valve.In addition, pressure sensor 66 and temperature sensor 68 are also further provided with reaction tower 6, for monitoring reaction course
In pressure change and temperature change, ensure whole course of reaction in the range of suitable temperature and pressure.
In the embodiment of the utility model one, the first exhaust pipe 2 is additionally provided with the 3rd valve 5 and the 4th valve 10, the
For three valves 5 between blender 3 and reaction tower 6, the 4th valve 10 is located at the exhaust end of the first exhaust pipe 2, it is preferred that the
Three valves 5 and the 4th valve 10 are electrically operated valve.
Further, air-introduced machine 9 is provided between the valve 10 of reaction tower 6 and the 4th, installing air-introduced machine 9 additional can ensure entirely to handle
The smoke evacuation back pressure of device, the operating load of diesel engine 1 is not increased.
In the embodiment of the utility model one, processing unit can also further comprise the second exhaust pipe 4, the first valve
21 and second valve 41, the first exhaust pipe 2 be connected by the first valve 21 with the exhaust outlet of diesel engine 1, the second exhaust pipe 4
It is connected by the second valve 41 with the exhaust outlet of diesel engine 1, the row of the exhaust end of the first exhaust pipe 2 and the second exhaust pipe 4
Gas end is connected with smoke evacuation chimney 11, and the first valve 21 and the second valve 41 carry out coordinated signals by YE (not shown),
So that the first valve 21 is closed when the second valve 41 is opened and opened when the second valve 41 is closed, it is preferred that the first valve
The valve 41 of door 21 and second is bypath valve., can be by setting the second exhaust pipe 4, the first valve 21 and the second valve 41
Ship opens the first valve 21, closes the second valve 41 in ECA (Emission Control Area, ECA) area operation,
Discharged after handling waste gas to meet emission request, and in non-ECA area operations, close the first valve 21, open the
Two valves 41, waste gas is immediately discharged in air by the second exhaust pipe 4, reduces ship energy consumption.
Next, the course of work detailed description to processing unit of the present utility model is as follows.
When ship is run in ECA regions, the second valve 41 is closed, opens the first valve 21, the 3rd valve the 5, the 4th
Valve 10, diesel engine 1 run caused by waste gas by the first valve 21 enter blender 3, in blender 3 with it is ureaclastic
Ammonia is sufficiently mixed, mixed gas by the 3rd valve 5 enter reaction tower 6, into reaction tower 6 gas first with
Positioned at O, N, OH, O caused by the pre-oxidation portion 63 on the top of 6 internal layer cavity of reaction tower 6212、HO2Deng Free Radical, in waste gas
NO is oxidized to NO2, the SO in waste gas2It is oxidized to SO3, the gas after pre-oxidation, which enters, is located at the internal layer cavity 621 of reaction tower 6
Acted in the desulfurization portion 64 of bottom with desulfurizing agent packing layer, remove the oxysulfide in waste gas, while waste gas is in desulfurization
Temperature raises in journey, and then, after desulfurization and the elevated gas of temperature is downwardly into outer layer cavity in leading for waste gas deflector 67
622, reacted with the denitrating catalyst in the denitration portion 65 of outer layer cavity 622, the nitrogen oxides in waste gas is removed, after denitration
Gas meet IMO regulatory emissions standards, the outlet 610 of reacted tower 6, air-introduced machine 9, the 4th valve 10 are discharged by smoke evacuation chimney 11
Into air.
When ship is run in non-ECA regions, open the second valve 41, close the first valve 21, the operation production of diesel engine 1
Raw waste gas is discharged into air through the second valve 41, the second exhaust pipe 4 by smoke evacuation chimney 11.
In summary, processing unit of the present utility model comprises at least following advantage：
(1) reaction tower is provided with internal layer cavity and outer layer cavity, and flow direction of the internal layer cavity along waste gas is sequentially provided with pre- oxygen
Change portion and desulfurization portion, outer layer cavity are provided with denitration portion, whole waste gas treatment process is concentrated in a reaction tower and carry out, device
Entirety occupies little space, installation cost is low, easy for installation, and the gas after pre-oxidation carries out desulphurization denitration processing, nitrogen oxidation successively
The removal efficiency of thing and oxysulfide is high；
(2) waste gas deflector is provided between the inlet end of the exhaust end of internal layer cavity and outer layer cavity, waste gas deflector is
The hemispherical plate or conical plate to be arched upward positioned at the bottom of internal layer cavity and inner layer cavity, by the waste gas that internal layer cavity is discharged useless
Can be well into outer layer cavity under the water conservancy diversion of conductance flowing plate.
Finally, the utility model illustrates its effect reached with specific embodiment：
Embodiment one：
Supporting processing unit of the present utility model carries out platform experiment on the diesel engine that a power is 9786KW.
In processing unit running, start the first valve 21, urea liquid spray gun 31 is well-mixed useless with ammonia
Gas enters reaction tower 6, is pre-oxidized first by the discharge cell of internal layer cavity 621, is carried out afterwards with desulfurizing agent packing layer
Reaction, the SOx in waste gas is removed, caused energy improves EGT in course of reaction, and waste gas enters and is located at outer layer afterwards
The denitration portion 65 of cavity 622, in the presence of denitrating catalyst, the NOx that goes in removing exhaust gas, the pressure arranged on reaction tower 6 passes
Operating condition condition in 68 real-time monitoring tower of sensor 66 and temperature sensor ensures the normal operation of system, the basis of soot blower 69
The feedback signal of pressure sensor 66, started by pressure difference control and denitration catalyst oxidant layer is purged, ensure that catalyst is efficient
Operation.
During bench test, processing unit runs 500 hours, and NOx and SOx discharge numerical value are fully achieved
Discharge standard as defined in IMO, the overall presure drop in system operation are less than 2000Pa, and the escaping of ammonia value is less than 10ppm.
Embodiment two：
Supporting processing unit of the present utility model carries out ship trial on 160000DWT bulk freighter.
In processing unit running, start the first valve 21, urea liquid spray gun 31 is well-mixed useless with ammonia
Gas enters reaction tower 6, is pre-oxidized first by the discharge cell of internal layer cavity 621, is carried out afterwards with desulfurizing agent packing layer
Reaction, the SOx in waste gas is removed, caused energy improves EGT in course of reaction, and waste gas enters and is located at outer layer afterwards
The denitration portion 65 of cavity 622, in the presence of denitrating catalyst, the NOx that goes in removing exhaust gas, the pressure arranged on reaction tower 6 passes
Operating condition condition in 68 real-time monitoring tower of sensor 66 and temperature sensor ensures the normal operation of system, the basis of soot blower 69
The feedback signal of pressure sensor 66, started by pressure difference control and denitration catalyst oxidant layer is purged, ensure that catalyst is efficient
Operation.
In emission control region, the processing unit of ship trial test runs the discharge number of 300 hours, NOx and SOx
Value fullys meet discharge standard as defined in IMO, and the overall presure drop in system operation is less than 2000Pa, and the escaping of ammonia value is small
10ppm。
It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, although the utility model is disclosed above with preferred embodiment, but be not limited to the utility model, it is any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (10)
- A kind of 1. marine exhaust processing unit for being used to remove sulfur and nitrogen oxides simultaneously, it is characterised in that the ship Oceangoing ship emission-control equipment includes the first exhaust pipe, blender and reaction tower, the exhaust of first exhaust pipe and diesel engine Mouth connection, the flow direction of the blender and the reaction tower along waste gas are successively set in first exhaust pipe, institute State and urea liquid spray gun is provided with blender, the reaction tower includes internal layer cavity and outer layer cavity, and the internal layer cavity enters Gas end and the inlet communication of the reaction tower, the exhaust end of the internal layer cavity connect with the inlet end of the outer layer cavity, institute The exhaust end of outer layer cavity and the outlet of the reaction tower are stated, the internal layer cavity is sequentially provided with along the flow direction of waste gas Pre-oxidation portion and desulfurization portion, the outer layer cavity are provided with denitration portion.
- 2. marine exhaust processing unit as claimed in claim 1, it is characterised in that the pre-oxidation portion is that bipolar electrode is directed to pin High-voltage corona discharge unit, including electrode plate with high voltage and grounding electrode plate, the electrode plate with high voltage and the grounding electrode plate are big Small identical, the electrode plate with high voltage and the grounding electrode plate are provided with multiple rows of draw point, the draw point point on the electrode plate with high voltage It is relative one by one between draw point tip on end and the grounding electrode plate.
- 3. marine exhaust processing unit as claimed in claim 2, it is characterised in that the electrode plate with high voltage and the ground connection electricity The area of pole plate is 500mm × 1000mm, and 50-100 row's draw points are welded with each battery lead plate, and the number for often arranging draw point is The distance between 10-50 roots, adjacent draw point are 10-50mm, and the length of every draw point is 20-50mm, every draw point it is a diameter of The distance between 1mm, the draw point tip in the sophisticated and corresponding grounding electrode plate of draw point on the electrode plate with high voltage For 50-80mm, the draw point is 316 draw points.
- 4. marine exhaust processing unit as claimed in claim 1, it is characterised in that the desulfurization portion is desulfurizing agent packing layer, The desulfurizing agent packing layer includes the desulfurizing agent that active component is made up of calcium hydroxide, magnesium hydroxide and coke, the desulfurizing agent Saturation Sulfur capacity be 60%-70%.
- 5. marine exhaust processing unit as claimed in claim 1, it is characterised in that the flowing side of the denitration portion interior edge waste gas To three layers of denitrating catalyst are sequentially provided with, the denitrating catalyst is corrugated, cavernous fiber titanium structure.
- 6. marine exhaust processing unit as claimed in claim 1, it is characterised in that the exhaust end of the internal layer cavity with it is described Waste gas deflector is provided between the inlet end of outer layer cavity.
- 7. marine exhaust processing unit as claimed in claim 1, it is characterised in that also including the second exhaust pipe, the first valve Door and the second valve, first exhaust pipe are connected by first valve with the exhaust outlet of the diesel engine, and described the Two exhaust pipes are connected by second valve with the exhaust outlet of the diesel engine, first valve and second valve Controlled by YE, first valve is closed in second valve opening and opened when second valve is closed Open.
- 8. marine exhaust processing unit as claimed in claim 1, it is characterised in that the import of the reaction tower is positioned at described anti- The top of tower is answered, positioned at the reaction tower in the side wall of top side, the internal layer cavity is for the outlet of the reaction tower Cylindrical chamber, the top of the internal layer cavity is inlet end, and the bottom of the internal layer cavity is exhaust end, and the outer layer cavity is The coaxial annular housing with the internal layer cavity, the bottom of the outer layer cavity is inlet end, and the top of the outer layer cavity is The connectivity part of exhaust end, the internal layer cavity and the outer layer cavity is in a ring.
- 9. marine exhaust processing unit as claimed in claim 1, it is characterised in that soot blower, institute are provided with the reaction tower The bottom for stating reaction tower is provided with collecting tank, and the entrance of the collecting tank is provided with valve.
- 10. marine exhaust processing unit as claimed in claim 1, it is characterised in that first exhaust pipe is additionally provided with Three valves and the 4th valve, between the blender and the reaction tower, the 4th valve is located at the 3rd valve The exhaust end of first exhaust pipe, air-introduced machine is provided between the reaction tower and the 4th valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720680894.2U CN207076345U (en) | 2017-06-12 | 2017-06-12 | For removing the marine exhaust processing unit of sulfur and nitrogen oxides simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720680894.2U CN207076345U (en) | 2017-06-12 | 2017-06-12 | For removing the marine exhaust processing unit of sulfur and nitrogen oxides simultaneously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207076345U true CN207076345U (en) | 2018-03-09 |
Family
ID=61425459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720680894.2U Active CN207076345U (en) | 2017-06-12 | 2017-06-12 | For removing the marine exhaust processing unit of sulfur and nitrogen oxides simultaneously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207076345U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138045A (en) * | 2017-06-12 | 2017-09-08 | 青岛双瑞海洋环境工程股份有限公司 | Marine exhaust processing unit for removing sulfur and nitrogen oxides simultaneously |
| CN109925879A (en) * | 2019-04-24 | 2019-06-25 | 东北大学 | A kind of sinter-smoke circulation collected device with the denitration of APS coordinated desulfurization |
-
2017
- 2017-06-12 CN CN201720680894.2U patent/CN207076345U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138045A (en) * | 2017-06-12 | 2017-09-08 | 青岛双瑞海洋环境工程股份有限公司 | Marine exhaust processing unit for removing sulfur and nitrogen oxides simultaneously |
| CN109925879A (en) * | 2019-04-24 | 2019-06-25 | 东北大学 | A kind of sinter-smoke circulation collected device with the denitration of APS coordinated desulfurization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105771649A (en) | Composite device for aftertreatment of ship low-speed diesel engine end gas | |
| CN107737527A (en) | Marine exhaust dedusting denitrification integral system | |
| CN108187480B (en) | Ship exhaust gas desulfurization system | |
| CN207076345U (en) | For removing the marine exhaust processing unit of sulfur and nitrogen oxides simultaneously | |
| CN108355475A (en) | A kind of ship single column two-region high-efficiency desulfurization denitrification apparatus | |
| CN112156642A (en) | Desulfurization and denitrification dust removal device | |
| CN205730896U (en) | A kind of marine low speed diesel engine vent gas post processing set composite | |
| CN108561893B (en) | Industrial boiler flue gas multi-pollutant cooperative control device and process flow thereof | |
| CN201389423Y (en) | Flue gas desulphurization dust removing tower for coal burning boiler | |
| CN107138045A (en) | Marine exhaust processing unit for removing sulfur and nitrogen oxides simultaneously | |
| CN112473359A (en) | Multichannel industrial flue gas desulfurization dust removal removes carbon monoxide denitration coupling device | |
| CN105749720B (en) | A kind of denitrating system and method | |
| KR102098232B1 (en) | Scrubber for cleaning exhaust gas and integrated apparatus having the same | |
| CN101694173B (en) | Exhaust purifier of diesel engine | |
| CN205638625U (en) | Dedicated intelligent purifier of treating motor vehicle exhaust gases | |
| CN210993747U (en) | Dry-type desulfurization system for ship exhaust gas | |
| CN110585896B (en) | Ship exhaust gas dry desulfurization system | |
| CN208482234U (en) | A kind of flue gas wet denitration device | |
| CN210645845U (en) | Double-tower type desulfurization and denitrification device | |
| CN209985217U (en) | Aeroengine test bed tail gas aftertreatment device | |
| CN112915737A (en) | Industrial tail gas pollutant removal system and removal method | |
| CN205435758U (en) | Efficient SCR reactor sweeps device | |
| CN110721538A (en) | Desulfurization and denitrification dedusting ultralow emission system for boiler | |
| CN215027634U (en) | Treatment device for denitration and desulfurization oxynitride of flue gas of heating furnace | |
| CN214389597U (en) | Multichannel industrial flue gas desulfurization dust removal removes carbon monoxide denitration coupling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |