CN206285677U - A kind of pre- agglomeration device of the fine grained of new structure - Google Patents
A kind of pre- agglomeration device of the fine grained of new structure Download PDFInfo
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- CN206285677U CN206285677U CN201621415663.0U CN201621415663U CN206285677U CN 206285677 U CN206285677 U CN 206285677U CN 201621415663 U CN201621415663 U CN 201621415663U CN 206285677 U CN206285677 U CN 206285677U
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Abstract
The utility model is related to a kind of pre- agglomeration device of the fine grained of new structure.Primary structure includes that vapor sprays into pipe line area, turbulent flow reunion cylindrical zone and gradient reunion laminate area.Vapor sprays into pipe line area includes that top sprays into pipe and bottom sprays into pipe, and two pipes are each perpendicular to flue, and axial distance is 1.5D (D is flue diameter)；Turbulent flow reunion cylindrical zone is made up of 24 solid cylinders, and cylinder is axially arranged along flue in triangular form；Gradient reunion laminate area is made up of 4 blocks of steel plates, steel plate horizontal positioned, and the vertical range between two steel plates is 0.2D.Finely grained catalyst in regenerated flue gas sequentially passes through vapor and sprays into the effect that pipe line area, turbulent flow reunion cylinder go with gradient reunion laminate area, and reuniting turns into large granular catalyst, can be separated from flue gas by cyclone separator afterwards.The present apparatus has the advantages that operating cost is low, installation and repairing is convenient, fine grained agglomerating effect is good, and environment protection significance is protruded.
Description
Art：
The invention belongs to Dual-Phrase Distribution of Gas olid Fine Particles technical field, more particularly to a kind of catalytic cracking unit regeneration cigarette
The pre- agglomeration device of finely grained catalyst in gas.
Background technology：
At present, the catalytic cracking unit of majority petrochemical industry refinery is equipped with the energy regenerating system with flue gas turbine expander both at home and abroad
System, exhaust turbine is the key equipment in catalytic cracking energy-recuperation system, can reclaim almost all pressure energy in high-temperature flue gas
Heat energy with 25% or so, the Power Recovery rate of cigarette machine, i.e. cigarette machine power output are reachable with power ratio needed for main air blower
130%, the requirement of energy saving had both been met, enterprise energy consumption input is reduced again, improve economic benefit.
Cigarette machine scale problems are refinery's most thorny issues.Research finds to cause the catalyst particle size of cigarette machine fouling low
In 10 μm, and granule density is relatively low, generally below 200mg/Nm3, for such particle, is difficult with conventional cyclone pair
It is separated.If these fine particle groups can be enable to be polymerized to the bulky grain that cyclone separator is separate, then before cyclone separator is entered
It is avoided that these fine graineds enter cigarette machine, so as to solve cigarette machine scale problems, it is to avoid the warp caused by being stopped work because of the fouling of cigarette machine
Ji loss, environmental pollution is caused while avoiding fine grained and being discharged into air by cigarette machine, meets national environmental protection and energy-conservation subtracts
The grand strategy of row.
Realizing the method for particle agglomeration has a lot, such as：Electricity is reunited, acoustic agglomeration, and heat is reunited, magnetic coagulation, and light is reunited, turbulent flow
Reunite, gradient is reunited etc..
Electricity is reunited, and this method promotes subparticle to be reached with electrophoretic by increasing the charge capacity of subparticle
The quantity on fly ash granule surface, so as to increase intergranular reuniting effect.But, electric reunion energy consumption is very high, and after reunion
The electric charge of particle institute band be difficult to eliminate, the separation to later stage particle puts to no little inconvenience.
Acoustic agglomeration, acoustic agglomeration is, according to Principles of Acoustics, using the sound area with very high-energy-density, to send out superfine particulate matter
The vibration of raw large magnitude, so as to reunite.But the energy of sound wave is easy to be absorbed by gas molecule, and high frequency sound wave is sometimes
The finely grained catalyst in flue gas can not be made to produce larger amplitude, also, in order to produce the sound of tens or even hundreds of kilo hertzs
Ripple, need to expend substantial amounts of electric energy, while also needing to eliminate the harm of noise.
Heat is reunited, and it refers to that superfine particulate matter produces obvious nucleation under without external force, temperature environment higher that heat is reunited
With the phenomenon reunited.Typically for the particulate matter that concentration is high and particle diameter difference is larger, the effect that heat is reunited is obvious.Even if
So, the still very slow of aggregation procedure that heat is reunited, thus be difficult to be applied in the industry.
Magnetic coagulation, after magnetic coagulation refers to ferromagnetism particle through magnetic fields, i.e. magnetic separation or premagnetization, due to the phase of its remanent magnetism
Interaction and the agglomeration that produces.But, the subject matter for facing at present is to be difficult efficiently to collect sub-magnetic debris, and very
Hardly possible is removed and conciliates the magnetic adherence particle being collected on the whole.
Light is reunited, and is the reunion for promoting particulate matter using the principle of light radiation.By the refraction angle, the light that change laser propagation
The many kinds of parameters such as intensity can promote that ultra-fine grain occurs reunion but its cost is quite big, at present it is not possible to extensive profit
With.
Turbulent flow is reunited, and is that fine particle has obvious nucleation and coacervation, and nucleation and cohesion in turbulent flow
Particle will further grow up, and with the enhancing of turbulent extent, fine grained turbulent flow agglomerating effect is significantly increased.
It is due to agglomeration caused by the collision that transverse velocity gradient causes, in the laterally speed in boundary layer that gradient is reunited
Degree gradient is maximum, therefore gradient is reunited, also referred to as boundary layer is reunited.And fine grained is reunited in the big region of transverse velocity gradient
Effect it is very notable.
Turbulent flow reunite and gradient reunite at high temperature, or Reynolds number it is larger when the good results are evident.Turbulent flow is reunited and gradient group
Many secondary influences and insoluble technical barrier that coalescence other method of agglomeration without more than are brought, beneficial to industrial practice life
Produce application.
Even it was verified that under hot environment, penetrating vapor can also greatly increase little particle and be agglomerated into bulky grain
Probability.
Finely grained catalyst local environment in regenerated flue gas belongs to hot environment, and flowing Reynolds number is very big, extremely accords with
Close the applicable elements that turbulent flow is reunited and gradient is reunited.
Utility model content:
According to deficiency and defect that prior art is present, the utility model provides a kind of fine grained of new structure and rolls into a ball in advance
Poly-, the device can realize the fine grain reunion in regenerated flue gas, little particle is agglomerated into bulky grain, finally by traditional whirlwind
Separator is separated from regenerated flue gas.The device is by changing the pipeline configuration before entering cyclone separator, increase regeneration
Fine grain turbulent flow is reunited and gradient is reunited in flue gas, so that fine particle groups are polymerized to bulky grain, finally by cyclone separator
Separate.
The purpose of this utility model is achieved in that apparatus main body includes three parts：According to the side that regenerated flue gas flow
To, be followed successively by vapor spray into pipe line area, turbulent flow reunion cylindrical zone, gradient reunion laminate area.Vapor sprays into the knot of pipe line area
Structure includes two parts：Vapor top spray into pipe and vapor bottom spray into pipe (why select up and down simultaneously spray into vapor,
Because only can cause to be not injected into the side water vapour content pettiness of vapor on top or only in bottom penetrating vapor, can drop
Low fine grained agglomerating effect), vapor upper jet tube is vertical with flue with vapor bottom bullnose, and positioned vertical can be big
Increase the facilitation effect for adding water and reuniting to fine grained with fine grain contact area, raising vapor after steam is sprayed into, also, water
Steam is vertically sprayed into be inclined than vapor and sprays into the turbulent extent that can more strengthen regenerated flue gas, is reunited beneficial to fine grained.It is simultaneously
Prevent upper and lower vapor from causing the unnecessary loss of momentum to spray, penetrating pipe staggers up and down, and (1D-2D, D are fume pipe to certain distance
Road diameter).The structure of turbulent flow reunion cylindrical zone is made up of 24 vertical solid cylinders of arrangement triangular in shape, body diameter
It is 0.15D, cylindrical radial distance is 0.4D, along the distance of flue axial direction is 0.5D, turbulent flow reunion cylindrical zone between cylinder
Overall length 9D.In this region, fine grained is moved with regenerated flue gas around solid cylinder, and fine grained turbulent extent is greatly enhanced, each other
The frequency of collision is greatly increased, fine grained reunion effect is significant.The structure in gradient reunion laminate area by 4 floor horizontal positioned steel plate
Composition, steel plate thickness is 1-2 centimetres, steel plate 6D long, and the vertical range between steel plate is 0.2D.At each steel plate upper and lower surface
All there is large range of boundary layer, there is very big transverse velocity gradient, the fine grained in regenerated flue gas is laterally fast at this
Degree gradient can occur substantial amounts of effective collision in very big region, so as to be agglomerated into bulky grain.Also, apparatus main body include three
Part is linked together by flange.
The beneficial effects of the utility model are：The finely grained catalyst of 1-3 μm of regenerated flue gas entrainment sprays by vapor
Enter the gradient of the effect, the turbulent flow agglomeration of turbulent flow reunion cylindrical zone and gradient reunion laminate area of the upper and lower two-way vapor in area
Agglomeration, finely grained catalyst is significantly reunited turns into large granular catalyst, can be isolated from flue gas by cyclone separator
Come, so as to substantially reduce the fine grained quantity entered in air.The present apparatus has low operating cost, installation and maintenance convenient, thin
Particle agglomeration effect is good, without changing the original device systems condition of factory, with important environment protection significance.
Brief description of the drawings：
Fig. 1 is apparatus structure principle schematic of the present utility model.
Fig. 2 is the top view of turbulent flow reunion cylindrical zone 2.
Fig. 3 is the A-A profiles in gradient reunion laminate area 3.
Specific embodiment：
Device of the present utility model is illustrated with reference to accompanying drawing, present apparatus main body is divided into three parts as shown in Figure 1, wrapped
Include：Vapor sprays into pipe line area 1, turbulent flow reunion cylindrical zone 3, gradient reunion laminate area 4.Three parts are linked together by flange,
Wherein, vapor sprays into pipe line area 1 includes that vapor top sprays into pipe 2 and vapor bottom sprays into pipe 5；Turbulent flow reunion cylindrical zone
3 are made up of the vertical solid cylinder of some distributions triangular in shape, and radial distance is 0.4D between two cylinders, along flue axial direction
Distance be 0.5D, a diameter of 0.15D of solid cylinder, see accompanying drawing 2；Gradient reunion laminate area 4 is made up of the steel plate of four pieces of levels,
Steel plate 6D long, the vertical range between adjacent two blocks of steel plates is 0.2D, sees accompanying drawing 3.
When the utility model device is implemented, the regenerated flue gas entrainment of finely grained catalyst spray into pipe line area 1 from vapor
Flue enter, meanwhile, vapor top sprays into pipe 2 and vapor bottom and sprays into pipe 5 and sprays into vapor simultaneously, and comes in
Flue gas be sufficiently mixed, increase fine grain turbulent extent, enhance fine grain turbulent flow agglomerating effect；Then, flue gas with
The mixture of vapor enters entrainment of through the catalyst granules after certain turbulent flow agglomeration from vapor penetrating pipe line area 1
In turbulent flow reunion cylindrical zone 3, due to the presence of cylinder, the turbulent extent of particle further increases, and particle effective collision probability is big
Big to increase, it is bulky grain, effect is significant that fine grained is constantly reunited；Flue gas from turbulent flow reunion cylindrical zone 3 out after, and then enter
Enter in gradient reunion laminate area 4, air-flow has very big transverse velocity gradient near the upper and lower surface of laminate, causes and has rolled into a ball
Further there is effective collision in poly- larger particles, particle further reunites change greatly after reuniting through gradient.Finally, air-flow entrainment of
The particle for becoming big of reuniting enters in cyclone separator, and cyclone separator will become big particle and isolated from flue gas through agglomeration
Come.
It is fine grain that a kind of pre- agglomeration device of fine grained of new structure that the utility model is related to realizes 1-3 μm of diameter
Reunite, these fine particle groups is polymerized to the bulky grain for being enough to by cyclone separator separate, also, the present apparatus is easy to operate, is easy to
Install and safeguard, without changing the original device systems condition of factory, operating cost is low, and fine grained agglomerating effect is good, reduce outer
Fine grain quantity is arranged, without changing the original device systems condition of factory, with important environment protection significance.
Claims (4)
1. a kind of pre- agglomeration device of the fine grained of new structure, main structure body includes that vapor sprays into pipe line area, turbulent flow and reunites circle
Post area and gradient reunion laminate area, it is characterised in that：Along regenerated flue gas flow direction, vapor sprays into pipe line area and reunites with turbulent flow
Cylindrical zone, gradient reunion laminate area are sequentially connected into tubulose by flange.
2. the pre- agglomeration device of fine grained of a kind of new structure according to claim 1, it is characterised in that：In vapor spray
Enter in pipe line area, vapor sprays into pipe and is divided into vapor top penetrating pipe and vapor bottom penetrating pipe, the penetrating of vapor top
Guan Qian, vapor bottom sprays into Guan Hou, two penetrating pipes along axial direction of regenerated flue gas pipeline away from be 1D-2D, and two manage it is vertical
Directly it is installed on regenerated flue gas pipeline.
3. the pre- agglomeration device of fine grained of a kind of new structure according to claim 1, it is characterised in that：Turbulent flow is reunited and is justified
Post area is made up of 24 solid cylinders, and a diameter of 0.15D of solid cylinder, solid cylinder is axially triangularly arranged along pipeline, and two
Radial distance between solid cylinder is 0.4D, and two solid cylinders are 0.5D along pipeline axial distance.
4. the pre- agglomeration device of fine grained of a kind of new structure according to claim 1, it is characterised in that：Gradient reunion layer
Plate area is made up of 4 blocks of steel plates, and steel plate thickness is 1-2 centimetres, steel plate 6D long, 4 pieces of equal horizontal positioneds of steel plate, between two blocks of steel plates
Vertical range is 0.2D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621415663.0U CN206285677U (en) | 2016-12-22 | 2016-12-22 | A kind of pre- agglomeration device of the fine grained of new structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621415663.0U CN206285677U (en) | 2016-12-22 | 2016-12-22 | A kind of pre- agglomeration device of the fine grained of new structure |
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| CN206285677U true CN206285677U (en) | 2017-06-30 |
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| CN201621415663.0U Expired - Fee Related CN206285677U (en) | 2016-12-22 | 2016-12-22 | A kind of pre- agglomeration device of the fine grained of new structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108295613A (en) * | 2018-04-18 | 2018-07-20 | 无锡红旗除尘设备有限公司 | It is a kind of can automatic desludging multitube is cooling and agglomeration device |
| CN109761228A (en) * | 2019-03-29 | 2019-05-17 | 广州大学 | The method and apparatus of two-dimensional material are efficiently removed under a kind of low reynolds number |
| CN112238003A (en) * | 2019-07-19 | 2021-01-19 | 中国石油化工股份有限公司 | Gas-solid separation device and coupling separation method |
| CN112316570A (en) * | 2020-10-15 | 2021-02-05 | 中国石油大学(华东) | Compact type industrial tail gas fine particle matter efficient removing and cooling device and method |
-
2016
- 2016-12-22 CN CN201621415663.0U patent/CN206285677U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108295613A (en) * | 2018-04-18 | 2018-07-20 | 无锡红旗除尘设备有限公司 | It is a kind of can automatic desludging multitube is cooling and agglomeration device |
| CN108295613B (en) * | 2018-04-18 | 2024-05-14 | 无锡红旗除尘设备有限公司 | Multi-pipe type cooling and agglomerating device capable of automatically descaling |
| CN109761228A (en) * | 2019-03-29 | 2019-05-17 | 广州大学 | The method and apparatus of two-dimensional material are efficiently removed under a kind of low reynolds number |
| CN109761228B (en) * | 2019-03-29 | 2023-09-15 | 广州大学 | Method and device for efficiently stripping two-dimensional material under low Reynolds number |
| CN112238003A (en) * | 2019-07-19 | 2021-01-19 | 中国石油化工股份有限公司 | Gas-solid separation device and coupling separation method |
| CN112238003B (en) * | 2019-07-19 | 2022-08-12 | 中国石油化工股份有限公司 | Gas-solid separation device and coupling separation method |
| CN112316570A (en) * | 2020-10-15 | 2021-02-05 | 中国石油大学(华东) | Compact type industrial tail gas fine particle matter efficient removing and cooling device and method |
| CN112316570B (en) * | 2020-10-15 | 2022-05-20 | 中国石油大学(华东) | Compact type industrial tail gas fine particle efficient removal and cooling device and method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170630 Termination date: 20171222 |