CN109826696A - A kind of ammonia storage tank with heronsbill heating structure - Google Patents
A kind of ammonia storage tank with heronsbill heating structure Download PDFInfo
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- CN109826696A CN109826696A CN201910230561.3A CN201910230561A CN109826696A CN 109826696 A CN109826696 A CN 109826696A CN 201910230561 A CN201910230561 A CN 201910230561A CN 109826696 A CN109826696 A CN 109826696A
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- ammonia
- heating
- storage tank
- ammonia storage
- heating tube
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of ammonia storage tank and its processing method with heronsbill heating structure, the ammonia storage tank includes ammonia storage tank outer wall cylinder, heat fin, heating tube, annulus end plate, ammonia escape pipe, angle valve, relief valve, the wherein ammonia storage tank outer wall cylinder, heating tube and annulus end plate surround a hollow cylinder by welding, the heating fin is along the axially uniform outside wall surface for being welded in heating tube, to which the hollow cylinder is divided into several chambers, solid ammonia storage material is filled in several described chambers, ammonia escape pipe and relief valve are welded on the outer wall cylinder of the ammonia storage tank.This apparatus structure is simple, dismounting is simple and engine exhaust utilization rate of waste heat is high, reduces device gross weight.
Description
Technical field
The present invention relates to a kind of ammonia storage tanks with heronsbill heating structure, after being mainly used in the SCR of vehicle exhaust
Manage industry.
Background technique
SCR (Selective Catalytic Reduction) catalyzed conversion reduction technique is traditional post-processing technology.
This using traditional SCR technology essence of liquid area is to decomposite ammonia at high temperature using urea, the ammonia as reducing agent
It is reacted under the comprehensive function of catalyst and temperature with the NOx in engine exhaust, nontoxic N is generated under ideal operating condition2
And H2O, to achieve the purpose that purification.However, liquid area reducing agent used in traditional SCR system face freezed in winter and
Under the conditions of the problem of heat preservation is thawed and urea delivery temperature are higher, the difficult condensation product decomposed is easily formed, and then block urea
Reductant nozzle is piled up in exhaust pipe, and engine exhaust back pressure is caused to increase, and reduces VE Vehicle Economy.
Therefore, low cost and high performance NH how to be obtained3Reducer feeding device is particularly important.Utilize metal chloride
This characteristic of complex is formed with ammonia, ammonia is fixed, and the metal chloride used is mainly alkaline-earth metal chlorine
Compound, strontium chloride, calcium chloride, magnesium chloride and necessary auxiliary addO-on therapy.The ammino compound ammonia-storing material conduct of formation
The desorption release of ammonia, the absorption of ammonia and metal chloride are realized in onboard reductant ammonia source by heating when in use
It is a reversible process with desorption.
103470347 A of Patent No. CN (equipment for generating ammonia) describes a kind of ammonia occurrence of equipment, wherein first
Heating device and secondary heating mechanism are separately mounted to main memory and secondary memory inside and independent operation.Patent No.
US2012/0045379 A1 (a method of ammonia is stored and supplied from solid ammonia storage material using vacuum pump), it describes
The method of storage and delivering ammonia, the heating method of ammonia-storing material are electric heating tube in drier or external microwave heating or infrared heating.Specially
Benefit number is 104234796 A of CN (particularly for the ammonia storage barrel of the filling time with optimization of motor vehicle exhaust system)
Describe a kind of ammonia storage barrel of built-in heated type or outer-enwraped type heating that channel is exported with ammonia.
Summary of the invention
To be solved by this invention to be under north of china in winter cryogenic conditions, liquid area thawing time is long when vehicle cold-start,
SCR system enters the slow problem of normal operating conditions, while reducing ammonia storage device weight, improves the continuous mileage of speeding of vehicle.
To achieve the above object, the present invention provides a kind of ammonia storage tank with heronsbill heating structure, the ammonia storage tanks
Including solid ammonia storage tank outer wall cylinder heats fin, heating tube, annulus end plate, ammonia escape pipe, valve, relief valve.Described
Ammonia storage tank surrounds a hollow cylinder, hollow circle by ammonia storage tank outer wall cylinder, heating tube and annulus end plate by welding
Solid ammonia storage material is filled in cylinder, loadings are the 1/5-1/3 of hollow cylinder volume.The axial length of heating tube is greater than hollow
The length 5%-20% of cylinder, the internal diameter of heating tube are 90-120mm, the outside wall surface of heating tube prolong its axial direction be welded with it is multiple
Heat fin；Ammonia escape pipe and relief valve are welded on ammonia storage tank outer wall cylinder.When engine exhaust flows through heating tube, tail
The heat of gas passes to solid ammonia storage material by heating tube and heating fin, when the ammonia-storing material in the ammonia storage tank reaches
When desorption temperature, the ammonia released is exported by ammonia escape pipe and enters the next unit of system.When device normal use, angle
Valve is in the open state, and when device needs replacing, angle valve is in close state, when tank body pressure is more than 5bar, relief valve
It opens, and then guarantees the safety of tank body.
Preferably, the ammonia storage tank encloses the hollow cylinder formed by heating tube, annulus end plate and ammonia storage tank outer wall cylinder,
Can have the volume of 5L-60L, ammonia storage tank outer wall barrel thickness is 2mm-4mm, case material by resistant to ammonia gas corrosion made of metal
At being preferably made of aluminium alloy or stainless steel.
Preferably, the heating fin, material can be stainless steel or aluminium alloy, with a thickness of 2mm-4mm, to make to store up
Ammonia in ammonia tank between each cabin can flow freely, and be evenly equipped with a large amount of ventholes thereon, and venthole aperture is 2mm-10mm.
4-12 piece heating fin is evenly equipped in every heating tube, the width for heating fin is slightly less than outer wall cylinder internal diameter and heating tube difference in internal diameters
Value, length are less than ammonia storage tank outer wall cylinder 3-5mm.
Preferably, the ammonia escape pipe is installed on the upside of ammonia storage tank, and material is stainless steel, bore 0.5-
1.5cm, thickness of pipe wall 2-3mm.
Preferably, the solid ammonia storage material can be anhydrous strontium chloride, anhydrous calcium chloride, anhydrous magnesium chloride or its
In two kinds, three kinds materials composition.
The beneficial effects of the present invention are: this apparatus structure is simple, dismounting is simple, engine exhaust utilization rate of waste heat is high,
Reduce device gross weight 2-5kg.This structure is suitable for light truck, which is installed on the rear side of SCR postprocessor.In north
Fang Dongji ambient temperature is lower than under the conditions of -20 DEG C, reaches service pressure to ammonia storage tank since vehicle cold-start
2bar only needs used time 15min, SCR system can be made to work normally, and NOx emission is exceeded when avoiding the cold start-up of vehicle winter.
Detailed description of the invention
The present invention will be further described below with reference to the drawings:
Fig. 1 has the ammonia storage tank schematic diagram of heronsbill heater structure；
Fig. 2 heronsbill heater structure schematic diagram.
Appended drawing reference: 1- ammonia storage tank outer wall cylinder；2- heats fin；3- heating tube；4- annulus end plate；5- ammonia escape pipe；
6- angle valve；7- relief valve；8- solid ammonia storage material.
Specific embodiment
Invention is further illustrated with embodiment with reference to the accompanying drawing, embodiment is the characteristics of the present invention is furture elucidated,
It is not equal to the limitation present invention, the change carried out for those skilled in the art according to the present invention should be included in the present invention
Protection scope within.
Embodiment 1
A kind of ammonia storage tank with heronsbill heater structure is installed on SCR post-processing according to the demand of vehicle general arrangement
The rear end of device.Have the ammonia storage tank schematic diagram of heronsbill heater structure as shown in Figure 1, heronsbill heater structure schematic diagram such as
Shown in Fig. 2.The ammonia storage tank is installed on the rear end of SCR postprocessor, including ammonia storage tank outer wall cylinder 1, heating fin 2, heating tube
3, annulus end plate 4, ammonia escape pipe 5, angle valve 6, relief valve 7；The heating fin 2 is along described in axially uniform be welded in
The outside wall surface of heating tube 3, and it is evenly equipped with the venthole that a large amount of apertures are 2-10mm on it；The ammonia storage tank outer wall cylinder 1 plus
Heat pipe 3 and annulus end plate 4 surround a hollow cylinder by welding；The described heating fin 2 will be described hollow
Cylinder is divided into several chambers, and each chamber is interior to be filled with solid ammonia storage material 8 by equal volume；6 He of ammonia escape pipe
Relief valve 7 is welded on the ammonia storage tank outer wall cylinder 1.
Preferably, the volume of solid ammonia storage material 8 described in each chamber and the 1/5-1/ for the hollow cylinder volume
3。
Preferably, the solid ammonia storage material 8 by anhydrous strontium chloride, anhydrous calcium chloride, anhydrous magnesium chloride at least
A kind of composition.
Preferably, the ammonia storage tank outer wall cylinder 1, heating fin 2, heating tube 3 and annulus end plate 4 using stainless steel or
Person's aluminum alloy materials, wherein heating fin 2 and heating tube 3 are made of the plate and tubing of 2-4mm thickness respectively.
Preferably, the radial width of the heating fin 2 is slightly less than 1 internal diameter of ammonia storage tank outer wall cylinder and heating tube
The difference of 3 internal diameters, and its number is 4-12.
Preferably, the length of the heating tube 3 is greater than the 5%-20%, internal diameter 90- of the hollow cylinder length
120mm；2 both ends of heating fin are equidistant with 3 both ends nozzle of heating tube, and are 50-100mm.
Preferably, both ends 10-50mm of the annulus end plate 4 away from the heating fin 2.
Preferably, it is provided with angle valve 8 on the ammonia escape pipe 6, when the solid ammonia storage device normal use, angle
Valve 8 is in the open state, when in the solid ammonia storage device ammonia use up need replacing when, angle valve 8 close.
Preferably, the ammonia escape pipe 6 is installed on the upper of ammonia storage tank, and material is stainless steel, internal diameter 0.5-
1.5cm, wall thickness 2-3mm.
Embodiment 2
A kind of processing method of the ammonia storage tank with heronsbill heater structure, in order to guarantee ammonia storage tank safety and
Thermal conductivity, heating tube 3 used in the ammonia storage tank, heating fin 2, annulus end plate 4, ammonia storage tank outer tube wall 1 are selected stainless
Steel or aluminum alloy materials, tubing used, plate thickness 2-4mm.Ammonia storage tank makes in this way, first heats 4-12
Fin 2 is welded in heating tube outside wall surface along axially uniform one by one, as shown in Fig. 2, heating 2 both ends of fin are apart from heating tube 3
Both ends nozzle is equidistant, and is 50-100mm.Next, a piece of annulus end plate 4 is socketed on to the heating tube 3, and
In the position apart from the heating 2 end edge 10-50mm of fin, it is welded on one with heating tube 3 and ammonia storage tank outer wall cylinder 1
It rises.At this point, heating fin 2 just the hollow cylinder that heating tube 3, annulus end plate 4 and outer tube wall 1 are enclosed is divided into it is several
Chamber.Next, solid ammonia storage material 8 is added in each chamber by equal volume, the volume of ammonia-storing material 8 in each chamber
With the 1/5-1/3 for hollow cylinder volume.Next, by separately the heating is terminated at from another for 4 sets of a piece of annulus end plate
Pipe 3, and in the position of the heating 2 end edge 10-50mm of fin apart from the other end, it is welded with heating tube 3 and ammonia storage tank outer wall cylinder 1
It is connected together.Finally, by ammonia escape pipe (5) and relief valve (7) weldering knot on the ammonia storage tank outer wall cylinder (1), it is thus complete
At the production of the ammonia storage tank.
Ammonia storage tank is heated using motor exhaust, tail gas delivery temperature is usually at 200-450 DEG C.Flow through heating tube
3 tail gas, by heating tube 3 and heating fin 2 by the heat transfer of tail gas to solid ammonia storage material 8, ammonia-storing material 8, which reaches, to be released
After ammonia temperature, ammonia is discharged, ammonia is by the export of ammonia escape pipe 5 being placed on the upside of ammonia storage tank and next list of entrance system
Member.When device normal use, angle valve 6 is in the open state, when in device ammonia use up need replacing when, angle valve 6 close.Activity
The completion for being passed through and adsorbing of gas ammonia is carried out by ammonia escape pipe 5.It can be using high-purity industrial ammonia bottle, in nature
In the environment of shady and cool ventilation, by pressure reducing valve and drying system, slowly filled in the inlet pressure ranges of 0.2-0.4MPa
Ammonia, filling the ammonia time is 2-3h；Weighing takes ammonia device before and after carrying out filling ammonia, and confirmation is filled with the net quality of ammonia within a predetermined range,
After ammonia is filled in completion, the valve of whole system is closed, it is ensured that is not revealed.
This structure is suitable for light truck, and ammonia storage tank is installed on the rear side of SCR postprocessor.In north of china in winter external environment
Temperature is lower than under the conditions of -20 DEG C, reaches service pressure 2bar to ammonia storage tank since vehicle cold-start, only needs the used time
15min can be such that SCR system works normally, and NOx emission is exceeded when avoiding the cold start-up of vehicle winter.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of ammonia storage tank with heronsbill heating structure, the ammonia storage tank is installed on the rear end of SCR postprocessor, including storage
Ammonia tank wall cylinder (1), heating fin (2), heating tube (3), annulus end plate (4), ammonia escape pipe (5), angle valve (6), relief valve
(7)；It is characterized in that, outside wall surface of the heating fin (2) along heating tube (3) described in axially uniform be welded in, and
It is evenly equipped with the venthole that a large amount of apertures are 2-10mm on it；Ammonia storage tank outer wall cylinder (1), heating tube (3) and the annulus
End plate (4) surrounds a hollow cylinder by welding；The hollow cylinder is divided by the heating fin (2)
Several chambers, each chamber is interior to be filled with solid ammonia storage material (8) by equal volume；The ammonia escape pipe (6) and relief valve
(7) it is welded on the ammonia storage tank outer wall cylinder (1).
2. as described in claim 1 with the ammonia storage tank of heronsbill heating structure, which is characterized in that described in each chamber to consolidate
The volume of body ammonia-storing material (8) and 1/5-1/3 for the hollow cylinder volume.
3. as claimed in claim 1 or 2 with the ammonia storage tank of heronsbill heating structure, which is characterized in that the solid storage
Ammonia material (8) is made of at least one of anhydrous strontium chloride, anhydrous calcium chloride, anhydrous magnesium chloride.
4. as claimed in claim 1 or 2 with the ammonia storage tank of heronsbill heating structure, which is characterized in that the ammonia storage tank
Outer wall cylinder (1), heating fin (2), heating tube (3) and annulus end plate (4) use stainless steel or aluminum alloy materials, wherein
Heating fin (2) and heating tube (3) are made of the plate and tubing of 2-4mm thickness respectively.
5. as claimed in claim 1 or 2 with the ammonia storage tank of heronsbill heating structure, which is characterized in that the heating wing
The radial width of piece (2) is slightly less than the difference of ammonia storage tank outer wall cylinder (1) internal diameter and heating tube (3) internal diameter, and its number
It is 4-12.
6. as claimed in claim 1 or 2 with the ammonia storage tank of heronsbill heating structure, which is characterized in that the heating tube
(3) length is greater than the 5%-20%, internal diameter 90-120mm of the hollow cylinder length；Described heating fin (2) both ends
It and is 50-100mm with being equidistant for heating tube (3) both ends nozzle.
7. as claimed in claim 1 or 2 with the ammonia storage tank of heronsbill heating structure, which is characterized in that the annulus end
Both ends 10-50mm of the plate (4) away from heating fin (2).
8. as claimed in claim 1 or 2 with the ammonia storage tank of heronsbill heating structure, which is characterized in that the ammonia goes out
Angle valve (8) are provided on tracheae (6), when the solid ammonia storage device normal use, angle valve (8) is in the open state, works as institute
It states ammonia in solid ammonia storage device to use up when needing replacing, angle valve (8) is closed.
9. as claimed in claim 1 or 2 with the ammonia storage tank of heronsbill heating structure, which is characterized in that the ammonia goes out
Tracheae (6) is installed on the upper of ammonia storage tank, and material is stainless steel, internal diameter 0.5-1.5cm, wall thickness 2-3mm.
10. a kind of processing method of the ammonia storage tank with heronsbill heating structure, which is characterized in that the processing method includes following
Step:
1) described by the heating fins (2) described in 4-12 one by one in the axially uniform outside wall surface for being welded in heating tube (3)
Heating fin (2) both ends being equidistant apart from heating tube (3) both ends nozzle, and be 50-100mm；
2) a piece of annulus end plate (4) is socketed on to the heating tube (3), and in the position away from heating 2 end edge 10-50mm of fin
It sets, the internal diameter of the annulus end plate (4) is welded in the outside wall surface of heating tube (3)；
3) assembly of the heating tube (3), heating fin (2) and annulus end plate (4) is inserted in ammonia storage tank outer wall cylinder (1)
It is interior, and the outer diameter of the annulus end plate (4) is welded in the edge of ammonia storage tank outer wall cylinder (1), thus the heating fin
(2) hollow cylinder that heating tube (3), annulus end plate (4) and ammonia storage tank outer wall cylinder (1) are enclosed is divided into several chambers
Room；
4) solid ammonia storage material (8) each chamber is added by equal volume, and solid described in each chamber stores up ammonia
The volume of material (8) and 1/5-1/3 for the hollow cylinder volume；
5) another annulus end plate (4) is socketed on the heating tube (3) from the other end, and in the hot fin added away from the other end
The internal diameter of another annulus end plate (4) is welded in the outside wall surface of heating tube (3) by the position of 2 end edge 10-50mm；
6) ammonia escape pipe (5) and relief valve (7) weldering knot are thus completed into the storage on the ammonia storage tank outer wall cylinder (1)
The production of ammonia tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230561.3A CN109826696A (en) | 2019-03-26 | 2019-03-26 | A kind of ammonia storage tank with heronsbill heating structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230561.3A CN109826696A (en) | 2019-03-26 | 2019-03-26 | A kind of ammonia storage tank with heronsbill heating structure |
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| Publication Number | Publication Date |
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| CN109826696A true CN109826696A (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910230561.3A Pending CN109826696A (en) | 2019-03-26 | 2019-03-26 | A kind of ammonia storage tank with heronsbill heating structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425023A (en) * | 2019-07-02 | 2019-11-08 | 一汽解放汽车有限公司 | Method for controlling reproduction, device, vehicle and the storage medium of diesel particulate filter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720572A (en) * | 2012-06-29 | 2012-10-10 | 中国第一汽车股份有限公司 | Post-processing control unit of active matter ammonia-storage and ammonia-supply of exhaust pipe waste heat method |
| CN207018061U (en) * | 2017-06-27 | 2018-02-16 | 中国第一汽车股份有限公司 | Electric heater unit for SSCR containers |
-
2019
- 2019-03-26 CN CN201910230561.3A patent/CN109826696A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720572A (en) * | 2012-06-29 | 2012-10-10 | 中国第一汽车股份有限公司 | Post-processing control unit of active matter ammonia-storage and ammonia-supply of exhaust pipe waste heat method |
| CN207018061U (en) * | 2017-06-27 | 2018-02-16 | 中国第一汽车股份有限公司 | Electric heater unit for SSCR containers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425023A (en) * | 2019-07-02 | 2019-11-08 | 一汽解放汽车有限公司 | Method for controlling reproduction, device, vehicle and the storage medium of diesel particulate filter |
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