CN108786302A - A kind of dangerous waste industry bag-type dust removal system - Google Patents
A kind of dangerous waste industry bag-type dust removal system Download PDFInfo
- Publication number
- CN108786302A CN108786302A CN201810698319.4A CN201810698319A CN108786302A CN 108786302 A CN108786302 A CN 108786302A CN 201810698319 A CN201810698319 A CN 201810698319A CN 108786302 A CN108786302 A CN 108786302A
- Authority
- CN
- China
- Prior art keywords
- bag
- filter bag
- dangerous waste
- cover plate
- pulse
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4218—Influencing the heat transfer which act passively, e.g. isolations, heat sinks, cooling ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
-
- 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
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of dangerous waste industry bag-type dust removal systems, it includes compressed air reservoir, air filter, pressure-regulating device, pulse ash remover, gas pipeline, shell, filter bag and double cover plate attemperator, gas pipeline is sequentially connected compressed air reservoir, air filter, pressure-regulating device and pulse ash remover, pulse ash remover is arranged in shell, shell is internally provided with a card, card is equipped with card hole, the sack of filter bag is fixed on card hole, filter bag is that PTFE materials are made, the filter bag of the material not cracky, it disclosure satisfy that the medium requirements of dangerous waste industry dedusting, pulse ash remover includes dividing gas tank, pulse valve and injection tube, pulse valve is submerging pulse valve, the valve gas output is big and resistance is low, effective deashing can be carried out to filter bag；It is equipped with double cover plate attemperator at the top of shell, double cover plate attemperator effectively antagonizes sleet and washes away, and improves the heat insulation effect of enclosure interior.
Description
Technical field
The present invention relates to dust pelletizing system technical fields, and in particular to a kind of dangerous waste industry bag-type dust removal system.
Background technology
Bag-type dust is to apply most cleaners, is widely applied in places such as industrial dedusting, chimney dust removals, and
Most important equipment in removing dust project, major function are the particulate matters trapped in flue gas, reduce dust emission, make flue gas concentration
The pollutant emission limit for reaching State Environmental Protection Administration's promulgation, as the country is more stringent to dust emission standard, European Union is successively
European Union's (1992) standard and European Union (2000/76/EC) standard are promulgated, new standard is to particulate matter, sour gas and heavy metal-polluted
Dye object control proposes more strict requirements.
But bag filter there are problems that in the use of dangerous waste industry, such as：1, filter bag is mostly cloth undulation degree
Material, and dangerous waste burn after exhaust gas components variation greatly, material resistance to acid and alkali, temperature tolerance, water-fast need to be considered when selecting filter bag
Solution property and oxidation stability easily lead to filter bag damage so the gas of dangerous waste industry is mostly corrosivity or oxidizing gas, cause
Good dust removing effects cannot be reached by being caused to pass through the gas of deduster；2, pulse dust cleaning is not thorough so that filter bag surface remains unchanged
Remaining a large amount of particulate matter, particulate matter block the fiber gap of filter bag, cause the running resistance of equipment excessively high；3, existing equipment
Inleakage is big, and the high-temperature flue gas of dangerous waste industry also contains SO in addition to water content2、SO3Equal sour gas, this allows for its dew point
It significantly improves, high air leak rate of air curtain is unfavorable for reducing flue gas low-temperature corrosion and infiltration hidden danger；4, dust remover roof is often subject to rainwater punching
Brush and snow and ice cover, when especially running in winter, as insulation of equipment effect is poor, (mainly top distributes heat, the wall portion on both sides
Hardly radiate), it can cause to leak out, leak leads to dewing corrosion and the dust moisture absorption, serious dewing corrosion can damage shell, filter
Bag, keel, cause filter bag hardened, and resistance increases, and even results in system shutdown.
Invention content
The purpose of the present invention is to provide a kind of dangerous waste industry bag-type dust removal systems, to solve existing bag-type dust removal system
Middle filter bag material is unsatisfactory for medium requirements, pulse dust cleaning is not thorough, the problem of top heat insulation effect difference.
To achieve the above object, the present invention provides a kind of dangerous waste industry bag-type dust removal systems comprising shell, filter bag,
A card is arranged by the enclosure interior space point in the inside of the shell in pulse ash remover and double cover plate attemperator
It is divided into the air-purifying chamber being distributed up and down and dust-laden gas chamber, the air-purifying chamber is equipped with exhaust pipe, and the dust-laden gas chamber is equipped with air inlet pipe, institute
It states card and is equipped with card hole, the filter bag is placed in the dust-laden gas chamber and the sack of the filter bag is fixed on the card hole, institute
It is that PTFE materials are made to state filter bag, and the pulse ash remover is fixed on the air-purifying chamber, the pulse ash remover packet
A point gas tank, pulse valve and injection tube, the air inlet connection of the gas outlet for dividing gas tank and pulse valve are included, the pulse valve is
Submerging pulse valve, the gas outlet of the pulse valve are connect with the air inlet of the injection tube, and the gas outlet of the injection tube is just
To the card hole, the double cover plate attemperator, the double cover plate attemperator packet are equipped in the top outer of the shell
Lower cover, alumina silicate fibre layer and upper cover plate are included, alumina silicate fibre layer is set on the lower cover, in the alumina silicate fibre
The upper cover plate is set on layer, the edge of the alumina silicate fibre layer is equipped with a circle sealing strip, and the sealing strip is by described
Cover board is fixedly clamped with the lower cover.
Wherein, the card hole is equipped with multiple with the filter bag, multiple card hole array distributions, each flower
Plate hole installs a filter bag.
Wherein, the pulse valve and the injection tube are equipped with multiple and identical as the quantity in card hole, Mei Gesuo
It states pulse valve and is separately connected an injection tube, the specifications and models all same of multiple pulse valves.
Wherein, the sack of the filter bag is fixed on the card hole by filter bag piston ring.
Wherein, it is equipped with ash bucket in the bottom of the shell, the ash bucket is equipped with ash hole, at the ash hole there are one installations
Rotary valve.
Wherein, the pulse valve divides gas tank bolt to fix with described.
Wherein, the double cover plate attemperator further includes handle, and the handle is fixed on the upper surface of the upper cover plate.
Wherein, the dangerous waste industry bag-type dust removal system further includes compressed air reservoir, air filter, pressure adjusting dress
It sets and gas pipeline, the gas pipeline is sequentially connected the compressed air reservoir, the air filter, the pressure tune
Regulating device and described divide gas tank.
The invention has the advantages that：
The present invention provides a kind of dangerous waste industry bag-type dust removal system, the filter bag of PTFE materials being capable of high temperature resistant, corrosion resistant
Erosion and other chemical properties, reaction is not likely to produce to external action, performance itself can be kept under various mal-conditions, with compared with
High intensity and modulus (it is also indeformable to bear prodigious load) so that filter bag not cracky can meet dangerous waste industry dedusting
Medium requirements ensure that the filtering function of filter bag, reach good dust removing effects；Its submerging pulse valve has well directly
It is blown effect, cooperation injection tube can effectively carry out pulse dust cleaning, the particulate matter that filter bag surface depends on is made to be purged, and reduce equipment
The resistance of operation；Its double cover plate attemperator can reduce the air leak rate of air curtain of system, avoid leaking out, drainage, and can be
Insulating layer is formed on the top of shell, avoids temperature in air-purifying chamber and reduces rapidly, avoids on the outside of dewing corrosion or filter bag
Shell caused by the dust moisture absorption, filter bag, keel component damage, reduce the risk of equipment operation, ensure that equipment overall operation
Stability.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for dangerous waste industry bag-type dust removal system that embodiment provides.
Fig. 2 is the structural schematic diagram of double cover plate attemperator in embodiment.
In figure：1- compressed air reservoirs, 2- air filters, 3- pressure-regulating devices, 4- pulse ash removers, 5- gases
Pipeline, 6- shells, 7- filter bags, 8- double cover plate attemperators, 9- cards, 10 air-purifying chambers, 11- dust-laden gas chambers, 12- air inlet pipe, 13-
Divide gas tank, 14- pulse valves, 15- injection tubes, 16- lower covers, 17- alumina silicate fibre layers, 18- upper cover plates, 19- sealing strips, 20-
Handle, 21- ash buckets, 22- rotary valves.
Specific implementation mode
Following implementation is not limited to the scope of the present invention for illustrating the present invention.
As illustrated in fig. 1 and 2, embodiment provides a kind of dangerous waste industry bag-type dust removal system comprising compressed air is stored up
Tank 1, air filter 2, pressure-regulating device 3, pulse ash remover 4, gas pipeline 5, shell 6, filter bag 7 and double cover plate are protected
Warm device 8, gas pipeline 5 is sequentially connected compressed air reservoir 1, air filter 2 and pressure-regulating device 3, in shell 6
The inner space of shell 6 is divided into the air-purifying chamber 10 being distributed up and down and dust-laden gas chamber 11 by one card 9 of inside setting, card 9, only
Gas chamber 10 is equipped with exhaust pipe (not shown), and dust-laden gas chamber 11 is equipped with air inlet pipe 12, and card 9 (does not show equipped with card hole in figure
Go out), filter bag 7 is placed in dust-laden gas chamber 11 and the sack of filter bag 7 is fixed on card hole, and pulse ash remover 4 is fixed on air-purifying chamber 10
It is interior, such as pulse ash remover 4 can be fixed at the top of shell 6 or the top of air-purifying chamber 10, can take and be welded and fixed,
Pulse ash remover 4 includes dividing gas tank 13, pulse valve 14 and injection tube 15, divide the gas outlet of gas tank 13 and pulse valve 14 into
Gas port connects, and pulse valve 14 is submerging pulse valve, and the gas outlet of pulse valve 14 is connect with the air inlet of injection tube 15, injection tube
15 gas outlet face card hole, i.e. face are installed on the sack of the filter bag 7 in card hole, to carry out reversed blow to filter bag 7
Grey operation, the particulate matter in 7 outside of purging filter bag, the gas output of submerging pulse valve is big and resistance is low, has and directly sprays well
Effect is blown, cooperation injection tube 15 can effectively carry out pulse dust cleaning, so that the particulate matter that 7 surface of filter bag depends on is purged, to drop
The resistance of low equipment operation is equipped with double cover plate attemperator 8 in the top outer of shell 6, and double cover plate attemperator 8 includes lower cover
Plate 16, alumina silicate fibre layer 17 and upper cover plate 18, setting alumina silicate fibre layer 17 on lower cover 16, in alumina silicate fibre layer 17
The edge of upper setting upper cover plate 18, alumina silicate fibre layer 17 is equipped with a circle sealing strip 19, and sealing strip 19 is by upper cover plate 18 under
Cover board 16 is fixedly clamped, and is equipped with handle 20 in the upper surface of upper cover plate 18, double cover plate attemperator 8 can reduce leaking out for system
Rate avoids leaking out, drainage, and can form insulating layer at the top of shell 6, avoids temperature in air-purifying chamber and drops rapidly
It is low, avoid 6 top dewing corrosion of shell or avoid shell 6 caused by the dust moisture absorption in the outside of filter bag 7, filter bag 7 and
Keel component is damaged, and is reduced the risk of equipment operation, be ensure that the stability of equipment overall operation.
In the present embodiment, equipped with the keel component (not shown) to play a supportive role, filter bag 7 and dragon in filter bag 7
Bone component is packed into place from card hole, is closely connect with card hole by the filter bag piston ring (not shown) after flicking, filter bag 7
It is the critical component of bag-type dusting, the quality of 7 performance of filter bag directly affects dust removing effects, and especially filter bag 7 is answered in dangerous waste industry
Selection meets high temperature resistant, the corrosion resistant material of incineration flue gas characteristic, so filter bag 7 uses PTFE material systems in present embodiment
It forms and surface carries out PTFE coating processings, the filter bag 7 of PTFE materials is not likely to produce reaction to external action, and in various evils
The fiber of performance itself can be kept under the conditions of bad, there is usually such filter bag 7 higher intensity and modulus (to bear prodigious negative
Lotus is also indeformable), it also being capable of high temperature resistant, corrosion-resistant and other chemical properties so that the not cracky of filter bag 7 can meet dangerous waste row
The medium requirements of industry dedusting ensure that the filtering function of filter bag 7, reach good dust removing effects.
In the present embodiment, the surface of filter bag 7 uses thermal finalization+superfine fibre micro porous filtration technique, the technological process
For：Raw material-adjustment-fibrillation-steel wire carding-bullet beats fibrous layer-needle thorn.
In the present embodiment, card hole, filter bag 7, pulse valve 14 and injection tube 15 are equipped with multiple, multiple card holes
A filter bag 7 is installed in array distribution, each card hole, and each pulse valve 14 is separately connected an injection tube 15, each injection tube
15 correspond to row's card hole, i.e. injection tube 15 is equipped with multiple gas outlets, and each gas outlet corresponds to a card hole, wherein multiple
The specifications and models all same of pulse valve uses the pulse valve 14 of same specifications and models during pulse jet and improves injection pressure
Power so that the bag bottom pressure peak value of filter bag 7 is high, and pulse dust cleaning ability is big, ash-removal effect is good.
In the present embodiment, pulse ash remover 4 be equipped with two groups, two group pulse deashing devices 4 with air pressure tune
Regulating device 3 connects.
In the present embodiment, it is equipped with ash bucket 21 in the bottom of shell 6, ash bucket 21 is equipped with ash hole, pacifies at ash hole
There are one rotary valves 22 for dress, when the dust stratification arrival in ash bucket 21 is a certain amount of, the level-sensing device alarm in ash bucket 21, after receiving the report for police service
Rotary valve 22 is opened, is shifted the dust stratification in ash bucket 21 with truck.
In the present embodiment, pulse valve 14 is fixed with 13 bolt of gas tank is divided, and it can be round gas bag, bolt to divide gas tank 13
Fixation can be such that pulse valve 14 completely coordinates with round gas bag, solve the problems, such as the verticality in gas bag manufacture, to reduce
The processing cost of system, and be bolted it is easy to disassemble, it is easy to maintain.
Although above having used general explanation and specific implementation mode, the present invention is described in detail,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (8)
1. a kind of dangerous waste industry bag-type dust removal system, which is characterized in that the dangerous waste industry bag-type dust removal system includes shell
(6), filter bag (7), pulse ash remover (4) and double cover plate attemperator (8), one flower of setting in the inside of the shell (6)
The shell (6) inner space is divided into the air-purifying chamber (10) being distributed up and down and dust-laden gas chamber (11), the air-purifying chamber by plate (9)
(10) it is equipped with exhaust pipe, the dust-laden gas chamber (11) is equipped with air inlet pipe (12), and the card (9) is equipped with card hole, the filter bag
(7) sack for being placed in the dust-laden gas chamber (11) and the filter bag (7) is fixed on the card hole, and the filter bag (7) is PTFE
Material is made, and the pulse ash remover (4) is fixed on the air-purifying chamber (10), and the pulse ash remover (4) includes
Point gas tank (13), pulse valve (14) and injection tube (15), the air inlet of the gas outlet and pulse valve (14) for dividing gas tank (13)
Mouth connection, the pulse valve (14) are submerging pulse valve, gas outlet and the injection tube (15) of the pulse valve (14)
Air inlet connects, card hole described in the gas outlet face of the injection tube (15), and institute is equipped in the top outer of the shell (6)
State double cover plate attemperator (8), the double cover plate attemperator (8) include lower cover (16), alumina silicate fibre layer (17) and
Upper cover plate (18), setting alumina silicate fibre layer (17), is arranged on the alumina silicate fibre layer (17) on the lower cover (16)
The edge of the upper cover plate (18), the alumina silicate fibre layer (17) is equipped with a circle sealing strip (19), and the sealing strip (19) is logical
The upper cover plate (18) is crossed to be fixedly clamped with the lower cover (16).
2. dangerous waste industry bag-type dust removal system according to claim 1, which is characterized in that the card hole and the filter bag
(7) it is identical as the filter bag (7) quantity to be equipped with multiple and described card hole, multiple card hole array distributions, Mei Gesuo
It states card hole and one filter bag (7) is installed.
3. dangerous waste industry bag-type dust removal system according to claim 2, which is characterized in that the pulse valve (14) and described
Injection tube (15) is equipped with multiple, and each pulse valve (14) is separately connected an injection tube (15), multiple arteries and veins
Rush the specifications and models all same of valve (14).
4. dangerous waste industry bag-type dust removal system according to claim 1, which is characterized in that the sack of the filter bag (7) is logical
Filter bag piston ring is fixed on the card hole.
5. dangerous waste industry bag-type dust removal system according to claim 1, which is characterized in that the bottom in the shell (6)
Equipped with ash bucket (21), the ash bucket (21) is equipped with ash hole, and there are one rotary valves (22) for installation at ash hole.
6. dangerous waste industry bag-type dust removal system according to claim 1, which is characterized in that the pulse valve (14) with it is described
Gas tank (13) bolt is divided to fix.
7. dangerous waste industry bag-type dust removal system according to claim 1, which is characterized in that the double cover plate attemperator is also
Including handle (20), the handle (20) is fixed on the upper surface of the upper cover plate (18).
8. dangerous waste industry bag-type dust removal system according to claim 1, which is characterized in that the dangerous waste industry bag-type dust
System further includes compressed air reservoir (1), air filter (2), pressure-regulating device (3) and gas pipeline (5), the gas
Body pipeline (5) be sequentially connected the compressed air reservoir (1), the air filter (2), the pressure-regulating device (3) with
And described divide gas tank (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698319.4A CN108786302A (en) | 2018-06-29 | 2018-06-29 | A kind of dangerous waste industry bag-type dust removal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698319.4A CN108786302A (en) | 2018-06-29 | 2018-06-29 | A kind of dangerous waste industry bag-type dust removal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108786302A true CN108786302A (en) | 2018-11-13 |
Family
ID=64073594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810698319.4A Pending CN108786302A (en) | 2018-06-29 | 2018-06-29 | A kind of dangerous waste industry bag-type dust removal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108786302A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457292A (en) * | 2021-07-16 | 2021-10-01 | 张家港宏昌钢板有限公司 | Electric furnace steelmaking dust removal equipment based on pneumatic dredging |
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| CN206434969U (en) * | 2017-01-20 | 2017-08-25 | 湖北中瑞环境技术有限公司 | A kind of air box impulse sack cleaner |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206434969U (en) * | 2017-01-20 | 2017-08-25 | 湖北中瑞环境技术有限公司 | A kind of air box impulse sack cleaner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457292A (en) * | 2021-07-16 | 2021-10-01 | 张家港宏昌钢板有限公司 | Electric furnace steelmaking dust removal equipment based on pneumatic dredging |
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Effective date of registration: 20190709 Address after: 510445 No. 10 Yiheng Street, Yongxing East Road, Baiyun District, Guangzhou City, Guangdong Province Applicant after: BFI ENVIRONMENT PRODUCTS LTD. Address before: Room B242, 2nd floor, No. 2250 Pudong Road, China (Shanghai) Free Trade Pilot Area, Pudong New Area, Shanghai 200000 Applicant before: Atea (Shanghai) Environmental Protection System Co. Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |