CN206473933U - Positive-pressure type bag hose for regeneration fume from catalytic cracking - Google Patents
Positive-pressure type bag hose for regeneration fume from catalytic cracking Download PDFInfo
- Publication number
- CN206473933U CN206473933U CN201720139896.0U CN201720139896U CN206473933U CN 206473933 U CN206473933 U CN 206473933U CN 201720139896 U CN201720139896 U CN 201720139896U CN 206473933 U CN206473933 U CN 206473933U
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- Prior art keywords
- chamber
- heat exchange
- dust
- filter
- catalytic cracking
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Abstract
The utility model discloses a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking, including heat exchange unit and dust removing units in communication, wherein, heat exchange unit includes the heat exchanger tube being arranged in heat exchange unit housing, dust removing units include gas distributor, high air-purifying chamber, filter chamber, dust collection chamber and double-layer seal valve, gas distributor is arranged on one end that filter chamber is connected with heat exchange unit, filter chamber includes bag cage and filter bag, wherein bag cage is spaced apart multiple, it is set with each bag cage above a filter bag, filter chamber and is provided with high air-purifying chamber；Dust collection chamber is arranged on below filter chamber, and it is communicated with the bag cage in filter chamber, and airtight valve is arranged on dust collection chamber bottom, and the dust that dust collection chamber collects enters the airtight valve and discharged.Bag hose of the present utility model effectively prevent the utilization of blower fan, and the design of double-layer seal valve and high air-purifying chamber ensure that the zero leakage of dust pelletizing system.
Description
Technical field
The utility model belongs to petroleum refining industry catalytic cracking flue gas pollution prevention technique field, and in particular to Yi Zhongyong
In the positive-pressure type bag hose of regeneration fume from catalytic cracking.
Background technology
Dust and SO in petroleum refining industry catalytic cracking unit regenerated flue gas2Discharge be the main air of petrochemical industry
Pollution sources.On April 16th, 2015, national environmental protection portion is issued《Petroleum refining industry pollutant emission standard》
(GB31570-2015), the standard provide, newly-built enterprise from 1 day July in 2015, existing enterprise from 1 day July in 2017,
Particle content is not more than 50mg/m in the regenerated flue gas of its catalytic cracking unit discharge3, special emission limit is not more than 30mg/
m3, far below the standard performed always before this《Discharge standard of air pollutants》In granular material discharged limit value 120mg/m3's
It is required that.Therefore, how it is significantly more efficient improvement regeneration fume from catalytic cracking dust pollution question, become more necessary and urgent.
Regeneration fume from catalytic cracking has temperature high (200~300 DEG C), fine dust content it is big (0~2.5 μm of particle diameter
Particulate matter accounts for more than 50%), the features such as pressure big (3kPa or so).For the improvement of fine dust, suction type deduster has
It is widely applied, but there are problems that as follows：1) supporting air-introduced machine is used, and up-front investment and later stage operation expense are high；2)
Upper box is sealed using cover plate, and air leak rate of air curtain is high；3) catalytic cracking unit regenerated flue gas overbottom pressure is big, is deposited using negative pressure dust removing device
In the energy, investment waste.Therefore, the exploitation of the adjustable deduster of positive-pressure type temperature is extremely urgent.
Patent CN201140008Y discloses a kind of positive pressure inverse air draft bag-type dust-collector, mainly by equal wind reducer pipe, enter
Air-valve, back suction airduct, back suction air-valve and two-stage ash bucket realize dedusting and deashing under barotropic state.The device eliminates pulse valve
With the application of compressed air, operating cost is low, and ash bucket good airproof performance, it is to avoid reentrainment of dust, but still draught fan matching provides dynamic
Power, and designed using traditional cover-plate type, there is leakage hidden danger.The U of patent CN 204975823358 disclose a kind of catalysis and split
Change regenerated flue gas bag-type dust collecting equipment, but this cleaner rear end must connect air-introduced machine, and deduster must negative pressure operation.And
After catalytic cracking unit cleaner again supporting air-introduced machine can there are problems that matching with the main air blower of front end and, be unfavorable for system peace
Complete stable longtime running.
Utility model content
For the disadvantages described above or Improvement requirement of prior art, the utility model, which is provided, is used for regeneration fume from catalytic cracking
Positive-pressure type filter bag device, it carries out dedusting using regenerated flue gas pressure itself, effectively prevent wind by the structure design of optimization
The design of the utilization of machine, double-layer seal valve and high air-purifying chamber ensure that the zero leakage of dust pelletizing system；Heat exchanger is used simultaneously and is removed
The integrated design of dirt device, considerably increases adaptability of the bag hose to flue-gas temperature.
To achieve the above object, according to the utility model, there is provided a kind of positive-pressure type filter for regeneration fume from catalytic cracking
Bag device, it is characterised in that including heat exchange unit and dust removing units in communication, wherein,
The heat exchange unit includes the heat exchanger tube being arranged in heat exchange unit housing, and regeneration fume from catalytic cracking passes through heat exchange
Air inlet in unit housings enters enclosure interior, and heat exchange is carried out by heat exchanger tube；
The dust removing units include gas distributor, high air-purifying chamber, filter chamber, dust collection chamber and double-layer seal valve, wherein, gas
Body distributor is arranged on one end that filter chamber is connected with heat exchange unit, and the flue gas after heat exchange after the gas distributor by entering
Filter chamber, the filter chamber includes bag cage and filter bag, and wherein bag cage is spaced apart multiple, and one is set with each bag cage
High air-purifying chamber is provided with above filter bag, filter chamber, the gas after filter chamber's dedusting is discharged by the high air-purifying chamber；The collection ash
Room is arranged on below filter chamber, and it is communicated with the bag cage in filter chamber, and the dust being attached on filter bag falls after pulse valve blowing
Enter dust collection chamber to be collected, airtight valve is arranged on dust collection chamber bottom, the dust that dust collection chamber collects enters the airtight valve and discharged.
As it is of the present utility model further preferably, the heat exchange unit also include soot blower, for periodically blow down heat exchange
Dust on pipe.
As it is of the present utility model further preferably, heat exchange unit also include flow control valve, it is arranged on heat exchanger tube
At import, for adjusting the cooling medium consumption entered in heat exchanger tube.
As it is of the present utility model further preferably, the bottom of the heat exchange unit is connected with the dust collection chamber of dust removing units
Wallboard is provided with 45 °~60 ° inclinations angle.
As it is of the present utility model further preferably, the heat exchange unit and dust removing units are formed as one, or separate shape
Into.
As of the present utility model further preferred, drain hole and manhole are provided with the filter chamber.
As of the present utility model further preferred, above the bag cage in filter chamber, pulse valve is additionally provided with, it is used for
It is blown the dust in filter bag.
It is used as of the present utility model further preferred, the import and export of the bag hose and/or heat exchange unit 1 and dust removing units
Place is provided with temperature and pressure measurement point between 6.
As it is of the present utility model further preferably, the height of the high air-purifying chamber 7 adds 0.5 for half filter bag length
Rice.
In general, by the contemplated above technical scheme of the utility model compared with prior art, have with following
Beneficial effect：
(1) bag hose of the present utility model is designed using positive-pressure type, eliminates the application of air-introduced machine in traditional dust collecting process,
Greatly save investment and operating cost；
(2) in bag hose of the present utility model, the design of high air-purifying chamber and the use of double-layer seal valve, it is ensured that malleation shape
The zero leakage of dust under state, also the installation and repairing for filter bag and bag cage, which is provided, facilitates；
(3) in bag hose of the present utility model, dust removing units import regenerated flue gas temperature has controllability, improves filter
Bag effectively increases the life-span of filter bag, reduces operating cost to the adaptability of dust.
Brief description of the drawings
Fig. 1 is a kind of knot of positive-pressure type bag hose for regeneration fume from catalytic cracking according to the utility model embodiment
Structure schematic diagram；
In all of the figs, identical reference is used for representing identical element or structure, wherein：1-heat exchange unit；
2-flow control valve；3-heat exchanger tube；4-soot blower；5-gas distributor；6-dust removing units；7-high air-purifying chamber；8-row
Emptying aperture；9-manhole；10-filter chamber；11-bag cage；12-filter bag；13-dust collection chamber；14-double-layer seal valve.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.In addition, institute in each embodiment of the utility model disclosed below
As long as the technical characteristic being related to does not constitute conflict and can be just mutually combined each other.
Fig. 1 is a kind of regeneration fume from catalytic cracking positive-pressure type temperature adjustable type bag filter according to the utility model embodiment
The structural representation of device.As shown in figure 1, the regeneration fume from catalytic cracking positive-pressure type temperature adjustable type bag hose of the embodiment,
Including heat exchange unit 1 and dust removing units 6.
As shown in figure 1, heat exchange unit 1 includes housing, flow control valve 2, heat exchanger tube 3.Heat exchanger tube 3 is preferably coiled pipe,
It is arranged in heat exchange unit housing, the flowing of cooling medium from the inlet to the outlet is used in heat exchanger tube 3, with to the heat in housing
Carry out heat exchange.Such as Fig. 1, regeneration fume from catalytic cracking enters enclosure interior by the air inlet on the housing of heat exchange unit 1, passed through
Heat exchanger tube 3, which carries out flue-gas temperature after heat exchange, to be reduced, and realizes the cooling to high-temperature flue gas.Tune is provided with the import of heat exchanger tube 3
Valve 2 is saved, for adjusting the cooling medium consumption entered in heat exchanger tube 3.Preferably soot blower is additionally provided with the housing of heat exchange unit 1
4, the exiting form of soot blower 4 preferably can be shock wave or sound wave.
In a preferred embodiment, the heat exchanger tube 3 of heat exchange unit 1 uses acid corrosion-resistant ND steel light pipes, and outside can be warded off
Porcelain.
In a preferred scheme, the wallboard that the bottom of heat exchange unit 1 is connected with the dust collection chamber of dust removing units 6 is provided with 45 °
~60 ° of inclinations angle.
As shown in figure 1, dust removing units 6 include gas distributor 5, high air-purifying chamber 7, filter chamber 10, dust collection chamber 13 and bilayer
Airtight valve 14.Wherein, gas distributor 5 is arranged on one end (at import) that filter chamber 10 is connected with heat exchange unit 1, after cooling
Flue gas is by entering filter chamber 10 after the gas distributor 5.
Filter chamber 10 includes bag cage 11 and filter bag 12, and wherein bag cage 11 is spaced apart multiple, is covered in each bag cage 11
Equipped with a filter bag 12, for capture dust.Bag cage 11 can be preferred to use heat resisting film-coating using the design of binodal cage, filter bag 12
Material.
The top of filter chamber 10 is provided with high air-purifying chamber 7, and the gas after filter chamber's dedusting is discharged by the high air-purifying chamber 7.
Preferably, drain hole 8 and manhole 9 are additionally provided with filter chamber 10.
The lower section of filter chamber 10 is provided with dust collection chamber 13, and it is communicated with the bag cage 11 in filter chamber 10, is attached on filter bag 12
Dust dust collection chamber 13 is fallen into after pulse valve blowing to be collected.The bottom of dust collection chamber 13 is provided with airtight valve 14, preferably
Double-layer seal valve, the dust that dust collection chamber 13 collects is discharged by the airtight valve 14.
In the course of work, regenerated flue gas first passes around heat exchange unit 1 and exchanged heat with water, its outlet temperature is reduced to a constant temperature
Preferably 180 DEG C or so in degree, such as the present embodiment.Flue gas after being handled through the cooling of heat exchange unit 1 is then through gas distributor 5
Dust is removed into filter chamber 10, is most discharged afterwards through high air-purifying chamber 7.The dust being attached on filter bag 12 falls after pulse valve blowing
Enter dust collection chamber 13, discharged finally by double-layer seal valve 14.
Preferably, the top of bag cage 11 in filter chamber 10, is additionally provided with pulse valve, it is used to be blown the powder in filter bag
Dirt.The quantity of pulse valve preferably can be the quantity Matching with bag cage 11.
The design pressure of bag hose is preferably 6kPa in the present embodiment, and device resistance is less than 1kPa, and design temperature is 180~
300℃。
In one embodiment, heat exchange unit 1 and dust removing units 6 are integrated designs, naturally it is also possible to individually separately set
Meter.
In a preferred embodiment, the import and export of bag hose and heat exchange unit 1 and the centre position of dust removing units 6 are equal
Provided with temperature and pressure measuring point, chain control is carried out.Preferably, linkage control system be according to device import and export flue-gas temperature come
The aperture of water inlet flow control valve 2 is adjusted, the flue-gas temperature into filter chamber 10 is maintained lower temperature, the present embodiment is excellent
Choosing is 180 DEG C or so.
In one embodiment, the highly preferred of high air-purifying chamber 7 adds 0.5 meter for half filter bag length, naturally it is also possible to
Other occurrences are selected according to the actual requirements.
During specific works, regenerated flue gas enters the temperature of bag hose for example at 200~300 DEG C or so, single through heat exchange first
Member 1 exchanges heat with cooling medium (such as water), cools the temperature to such as 180 DEG C or so.The import and export of bag hose and centre position are equal
There is provided temperature and pressure measuring point, the flow of water is adjusted according to temperature feedback situation, it is ensured that outlet cigarette temperature is at 180 DEG C or so.It
Afterwards, regenerated flue gas is through gas distributor 5 even into filter chamber 10, and dust is intercepted and adsorbed above by filter bag 12, neat stress to
Upper motion is arranged through high air-purifying chamber 7 is outer.
When the inlet outlet pressure differential of dust removing units 6 reaches certain value, pulse valve starts and is blown filter bag, enters dust releasing
Enter dust collection chamber 13, most discharged afterwards through double-layer seal valve 14.Preferably, double-layer seal valve 14 when in use, first opens upper strata valve
Upper strata valve is closed after closing lower floor valve, the pipeline for making dust enter between two layers of valve, certain reserves, lower floor's valve is opened
Door, will be arranged outside dust.
The dust that soot blower 4 on heat exchange unit 1 is used on periodic cleaning heat exchanger tube 3, dust falls into the bottom of heat exchange unit 1
Portion, dust collection chamber 13 then can be delivered to along tilt wall plate and collects discharge.
Drain hole and manhole are used for overhauling high air-purifying chamber 7, when specific in maintenance, first opened and are drained device as early as possible
Interior flue gas, is then overhauled.
As it will be easily appreciated by one skilled in the art that the foregoing is only preferred embodiment of the present utility model, not
To limit the utility model, all any modifications made within spirit of the present utility model and principle, equivalent substitution and change
Enter, should be included within protection domain of the present utility model.
Claims (9)
1. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking, it is characterised in that connect including heat exchange unit and therewith
Logical dust removing units, wherein,
The heat exchange unit (1) includes the heat exchanger tube (3) being arranged in heat exchange unit housing, and regeneration fume from catalytic cracking is by changing
Air inlet on hot cell (1) housing enters enclosure interior, and heat exchange is carried out by heat exchanger tube (3)；
The dust removing units include gas distributor (5), high air-purifying chamber (7), filter chamber (10), dust collection chamber (13) and double-layer seal
Valve (14), wherein, gas distributor (5) is arranged on one end that filter chamber (10) is connected with heat exchange unit (1), the cigarette after heat exchange
Gas enters filter chamber (10) afterwards by the gas distributor (5), and the filter chamber (10) includes bag cage (11) and filter bag (12), its
Middle bag cage (11) is spaced apart multiple, and a filter bag (12), the filter chamber are set with each bag cage (11)
(10) top is provided with high air-purifying chamber (7), and the gas after filter chamber (10) dedusting enters the high air-purifying chamber (7) and is discharged；
The dust collection chamber (13) is arranged on below filter chamber (10), and it is communicated with the bag cage (11) in filter chamber (10), is attached to filter bag
(12) dust on falls into dust collection chamber (13) to be collected after pulse valve blowing；The airtight valve (14) is arranged on dust collection chamber
(13) bottom, the dust that the dust collection chamber (13) collects enters the airtight valve (14) and is discharged.
2. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to claim 1, wherein, the heat exchange
Unit (1) also includes soot blower (4), for periodically blowing down the dust on heat exchanger tube (3).
3. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to claim 2, wherein, heat exchange unit
(1) also include flow control valve (2), it is arranged at the import of heat exchanger tube (3), enter cold in heat exchanger tube (3) for adjusting
But rate-of flow.
4. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to claim 3, wherein, the heat exchange
The wallboard that the bottom of unit (1) is connected with the dust collection chamber of dust removing units (6) is provided with 45 °~60 ° inclinations angle.
5. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to any one of claim 1 to 4, its
In, the heat exchange unit (1) and dust removing units (6) are formed as one, or split is formed.
6. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to any one of claim 1 to 4, its
In, it is provided with drain hole (8) and manhole (9) on the filter chamber (10).
7. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to any one of claim 1 to 4, its
In, above the bag cage (11) in the filter chamber (10), pulse valve is additionally provided with, it is used to be blown the dust in filter bag.
8. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to any one of claim 1 to 4, its
In, place is provided with temperature and pressure measurement point between the import and export of the bag hose and/or heat exchange unit (1) and dust removing units (6).
9. a kind of positive-pressure type filter bag device for regeneration fume from catalytic cracking according to any one of claim 1 to 4, its
In, the height of the high air-purifying chamber (7) adds 0.5 meter for half filter bag length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139896.0U CN206473933U (en) | 2017-02-16 | 2017-02-16 | Positive-pressure type bag hose for regeneration fume from catalytic cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139896.0U CN206473933U (en) | 2017-02-16 | 2017-02-16 | Positive-pressure type bag hose for regeneration fume from catalytic cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206473933U true CN206473933U (en) | 2017-09-08 |
Family
ID=59748758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720139896.0U Expired - Fee Related CN206473933U (en) | 2017-02-16 | 2017-02-16 | Positive-pressure type bag hose for regeneration fume from catalytic cracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206473933U (en) |
-
2017
- 2017-02-16 CN CN201720139896.0U patent/CN206473933U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20220216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |