CN108043132A - A kind of efficient pocket type air dust remover - Google Patents
A kind of efficient pocket type air dust remover Download PDFInfo
- Publication number
- CN108043132A CN108043132A CN201711358585.4A CN201711358585A CN108043132A CN 108043132 A CN108043132 A CN 108043132A CN 201711358585 A CN201711358585 A CN 201711358585A CN 108043132 A CN108043132 A CN 108043132A
- Authority
- CN
- China
- Prior art keywords
- babinet
- filter
- wall
- idler wheel
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- B01D46/0039—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
- B01D46/023—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
- B01D46/02—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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
-
- 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
Abstract
The invention discloses a kind of efficient pocket type air dust removers, including babinet and air inlet pipe, the left side top of the babinet is equipped with air inlet pipe, the bottom four corners of the babinet are mounted on foundation, the outer wall of the bag body is connected with the inner wall of top plate, the motor wheel is connected by belt with idler wheel, the outer wall of the idler wheel is equipped with multiple mandrils, the inner cavity of the mandril is equipped with the first spring, the top of first spring is equipped with connecting rod, the top of the connecting rod is equipped with pulley, and the pulley is connected with the outer right wall overlap joint of filter.The efficient pocket type air dust remover, the air pump installed by casing top inner wall, also preventing idler wheel impact, filter is too quickly causes filter damage, the waste residue mouth being equipped with by the bottom of box, the waste residue under filter worry is allow to be dropped out along it, timely cleaning is achieved the purpose that, it is excessive to prevent that box house from stockpiling waste residue, and filter effect is caused to be deteriorated.
Description
Technical field
The present invention relates to deduster technical fields, are specially a kind of efficient pocket type air dust remover.
Background technology
Present Boiler Plant becomes the maximum root that air is polluted in city, by ash caused by burning and vulcanization
Object, it is most of to be taken out of from boiler by flue gas, if these harmful substances of the device of no purifying smoke are discharged into air, cause tight
The pollution of weight, to solve the problems, such as this, the effect of bag filter is just particularly important, such as Application No. CN
The patent of invention of 204637825U, including structures such as smoke inlet, multiple through holes, filter cloth bag and conically shapeds, although the invention
The structure of patent is simple, but due to easily being blocked at its filter cloth bag, causes dedusting work that can not be normally carried out, to people with
Carry out many unnecessary troubles.
The content of the invention
It is an object of the invention to provide a kind of efficient pocket type air dust remover, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical solution:A kind of efficient pocket type air dust remover, including case
Body and air inlet pipe, the left side top of the babinet are equipped with air inlet pipe, and the air inlet pipe runs through babinet, the bottom four of the babinet
Angle is mounted on foundation, and the right hand top of the babinet is equipped with gas outlet, and babinet, the bottom of the babinet are run through in the gas outlet
Portion is equipped with waste residue mouth, and the waste residue mouth runs through babinet, and the top inner wall of the babinet is equipped with air pump, the left side of the air pump
Partition plate is installed, the top of the partition plate is connected with the inner wall of babinet, and top plate is equipped on the right side of the partition plate, the top plate
Inner wall of the left and right sides respectively with partition plate and babinet is connected, and the bottom of the top plate is equipped with multiple filters, the filter
Through top plate, the bottom of the filter is equipped with supporting plate, and the top corner of the supporting plate is mounted on column, the supporting plate
Marsupial body is installed on top, and the outer wall of the bag body is connected with column, and the outer wall of the bag body is connected with the inner wall of top plate, the mistake
Idler wheel is installed, the inner cavity of the idler wheel is equipped with bull stick, and the rear and front end of the bull stick is interior with babinet on the right side of filter
Wall is connected, and motor is equipped on the right side of the idler wheel, and the motor is connected with the lower surface of top plate, the shaft end installation of the motor
There is motor wheel, the motor wheel is connected by belt with idler wheel, and the outer wall of the idler wheel is equipped with multiple mandrils, the mandril
Inner cavity is equipped with the first spring, and the top of first spring is equipped with connecting rod, and the top of the connecting rod is equipped with pulley, described
Pulley is connected with the outer right wall overlap joint of filter.
Preferably, first baffle is installed, the bottom outer wall of the first baffle is equipped with second on the right side of the partition plate
Baffle, the bottom of the second baffle are connected with the inner wall of babinet, and the inner cavity of the second baffle is equipped with second spring, described
The top of second spring is connected with first baffle, and the outer wall of the second baffle is provided with multiple slots, the bottom of the first baffle
3rd spring is installed, the right end of the 3rd spring is equipped with inserted block, and the inserted block runs through slot on the right side of portion inner cavity.
Preferably, the left surface of the partition plate is equipped with rubber slab.
Preferably, it is mounted on mainstay at left and right sides of the foundation.
Preferably, fixture block is mounted at left and right sides of the air pump, the upper surface of the fixture block and the inner wall of babinet are washed
It is connected.
Compared with prior art, the beneficial effects of the invention are as follows:
1. patent of the present invention, the air pump installed by casing top inner wall have reached the mesh that box house gas is made to circulate
, make the air that needs purify along air inlet, via partition plate, after finally flowed out by filter from gas outlet.
2. patent of the present invention by the filter installed on top plate, has achieved the purpose that purify exhaust gas, and pacifies on filter
The bag body of dress can be filtered the gas blasted, and the column of the external wall of bag then fixes a bag body, prevent its deformation effect mistake
Filter effect.
3. patent of the present invention by connecting motor, has achieved the purpose that idler wheel is driven to rotate, has made the pulley installed on idler wheel
Can move in circles impact filter, prevent it because long working, and cause to accumulate excessive dust at bag body and block.
4. patent of the present invention, the first spring installed by mandril inner cavity, make coupled connecting rod can with free shrink,
Achieve the purpose that prevent since pulley extension elongation is stuck more than the length between idler wheel and filter, also prevented idler wheel
Filter is too quickly causes filter damage for impact.
5. patent of the present invention, the waste residue mouth being equipped with by the bottom of box allow the waste residue under filter worry to be dropped out along it,
Timely cleaning is achieved the purpose that, it is excessive to prevent that box house from stockpiling waste residue, and filter effect is caused to be deteriorated.
Description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is the filter structure schematic representation of the present invention;
Fig. 3 is the roller structure schematic diagram of the present invention;
Fig. 4 is the first baffle structure diagram of the present invention.
In figure:1st, babinet, 2, air inlet pipe, 3, foundation, 4, gas outlet, 5, waste residue mouth, 6, air pump, 7, top plate, 8, filter,
9th, column, 10, bag body, 11, partition plate, 12, supporting plate, 13, idler wheel, 14, bull stick, 15, motor, 16, motor wheel, 17, belt, 18,
Pulley, 19, connecting rod, 20, mandril, the 21, first spring, the 22, first baffle, 23, second baffle, 24, second spring, the 25, the 3rd
Spring, 26, inserted block, 27, slot, 28, mainstay, 29, rubber slab, 30, fixture block.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
- 4 are please referred to Fig.1, the present invention provides a kind of technical solution:A kind of efficient pocket type air dust remover, including babinet 1
With air inlet pipe 2, the left side top of babinet 1 is equipped with air inlet pipe 2, can be blasted by air inlet pipe 2 to the inner cavity of babinet 1 to be clean
Gas, air inlet pipe 2 runs through babinet 1, and the bottom four corners of babinet 1 are mounted on foundation 3, and the right hand top of babinet 1 is equipped with out
Gas port 4, alloing purified gas, babinet 1 is run through in gas outlet 4, and the bottom of babinet 1 is equipped with waste residue mouth 5 along its outflow,
Waste residue is made to have achieved the effect that timely cleaning along its outflow, prevent excessive dust stratification from influencing filter effect, waste residue mouth 5 runs through case
Body 1, the top inner wall of babinet 1 are equipped with air pump 6, connect the external power supply of air pump 6, make its start-up operation, the drum into air inlet 2
Enter exhaust gas, exhaust gas flows down to the inner cavity of babinet 1 via partition plate 11, under the attraction of air pump 6, entered along air admission hole 2
In filter 8, by and by enter the space on 7 top of top plate after filtering at the bag body 10 on filter 8, in pushing away for air pump 6
It is dynamic lower into gas outlet 4, filtering is completed, the left side of air pump 6 is equipped with partition plate 11, the top of partition plate 11 and the inner wall of babinet 1
It is connected, making gas to be clean, dust is getting to filter 8 after can first precipitating a part in the inner cavity path length of side of babinet 1
On, reduce the dust stratification on filter 8, the right side of partition plate 11 is equipped with top plate 7, the left and right sides of top plate 7 respectively with partition plate 11
It is connected with the inner wall of babinet 1, there are three filter 8, filter 8 carried out exhaust gas by bag body 10 for the bottom installation of top plate 7
Filter, and column 9 then secures bag body 10, prevents its deformation, influences filter effect, filter 8 runs through top plate 7, the bottom of filter 8
Portion is equipped with supporting plate 12, and the top corner of supporting plate 12 is mounted on column 9, the top installation marsupial body 10 of supporting plate 12, bag body 10
Outer wall be connected with column 9, the outer wall of bag body 10 is connected with the inner wall of top plate 7, prevents exhaust gas connecing from top plate 7 and filter 8
It is leaked out at seam, the right side of filter 8 is equipped with idler wheel 13, and the inner cavity of idler wheel 13 is equipped with bull stick 14, the rear and front end of bull stick 14
Inner wall with babinet 1 is connected, and the right side of idler wheel 13 is equipped with motor 15, and power is provided for the rotation of idler wheel 13, motor 15 with
The lower surface of top plate 7 is connected, and the shaft end of motor 15 is equipped with motor wheel 16, and motor wheel 16 is connected by belt 17 with idler wheel 13,
There are six mandril 20, the inner cavity of mandril 20 is equipped with the first spring 21 for the outer wall installation of idler wheel 13, and the of the installation of 20 inner cavity of mandril
One spring 21 can stretch with impact, coupled connecting rod 19 is made constantly to be passed in and out in the inner cavity of mandril 20, prevent due to
18 extension elongation of pulley is stuck more than the length between idler wheel 13 and filter 8, also prevents pulley 18 and impacts 8 mistake of filter
Suddenly filter 8 is caused to damage, the top of the first spring 21 is equipped with connecting rod 19, and the top of connecting rod 19 is equipped with pulley 18, pulley
18 are connected with the outer right wall overlap joint of filter 8, connect the external power supply of motor 15, motor wheel 16 is made to drive idler wheel by belt
13 rotate, and the sliding block installed on idler wheel 13 18 is made to impact the rightmost side on filter 8 repeatedly, overlaps the column 9 being connected with pulley 13,
Shaken off dust stratification, and impacted using pulley 18, more smooth when alloing impact, the right side of partition plate 11 is equipped with first baffle
22, the bottom outer wall of first baffle 22 is equipped with second baffle 23, and the bottom of second baffle 23 is connected with the inner wall of babinet 1, takes out
Going out first baffle 23 can raise its position, and the inner cavity of second baffle 23 is equipped with second spring 24, the top of second spring 24
End is connected with first baffle 22, extracts first baffle 22 out more effortless, decreases the pressure of inserted block 26, prevents that it is old
To change, the outer wall of second baffle 23 is provided with seven slots 27, and the 3rd spring 25 is equipped on the right side of the bottom inner cavity of first baffle 22, the
The right end of three springs 25 is equipped with inserted block 26, and inserted block 26 runs through slot 27, fixes first baffle 22, extracts first baffle 22 out,
Its position is raised, then can limit the flow velocity for blasting gas, increases the path length of gas flowing, makes dust after precipitation
Fall in filter 8, be filtered, also improve the drop point of gas, reduce dissipation of the gas at waste residue mouth 5, make its process
Filter 8 evenly fully, puts down first baffle 22, then can accelerate the flow velocity of gas, increases filter efficiency, a left side for partition plate 11
Surface is equipped with rubber slab 29, and breeding partition plate 11 damages, and the left and right sides of foundation 3 is mounted on mainstay 28, the left and right two of air pump 6
Side is mounted on fixture block 30, and the upper surface of fixture block 30 is washed with the inner wall of babinet 1 to be connected.
Connect the external power supply of air pump 6, make its start-up operation, blast exhaust gas into air inlet 2, exhaust gas along air admission hole 2,
The inner cavity of babinet 1 is flowed down to via partition plate 11, under the attraction of air pump 6, into filter 8, the bag on filter 8
By and by entering the space on 7 top of top plate after filtering at body 10, into gas outlet 4 under the promotion of air pump 6, completed
Filter if bag body 10 is blocked because dust stratification is too many in the process, needs to connect the external power supply of motor 15, passes through motor wheel 16
Belt drives idler wheel 13 to rotate, and the sliding block installed on idler wheel 13 18 is made to impact the rightmost side on filter 8 repeatedly, is overlapped with pulley 13
Connected column 9, is shaken off dust stratification, is dropped out via waste residue mouth 5, and in shots, the first of the installation of 20 inner cavity of mandril
Spring 21 can stretch with impact, and coupled connecting rod 19 is made constantly to be passed in and out in the inner cavity of mandril 20, is prevented due to cunning
It is stuck more than the length between idler wheel 13 and filter 8 to take turns 18 extension elongations, it is too quickly to also prevent the impact filter 8 of pulley 18
Filter 8 is caused to damage.
In the description of the present invention, it is to be understood that term " coaxial ", " bottom ", " one end ", " top ", " middle part ",
" other end ", " on ", " one side ", " top ", " interior ", " forepart ", " center ", the orientation of the instructions such as " both ends " or position relationship be
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " setting ", " connection ", " fixation ",
Terms such as " being screwed on " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral;It can be with
It is mechanical connection or electrical connection;It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside a element, unless otherwise restricted clearly, for the common of this field
For technical staff, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of efficient pocket type air dust remover, including babinet (1) and air inlet pipe (2), the left side top peace of the babinet (1)
Equipped with air inlet pipe (2), it is characterised in that:Air inlet pipe (2) runs through babinet (1), and the bottom four corners of the babinet (1) are mounted on bottom
Column (3), the right hand top of babinet (1) are equipped with gas outlet (4), and the gas outlet (4) runs through babinet (1), the babinet (1)
Bottom is equipped with waste residue mouth (5), and the waste residue mouth (5) runs through babinet (1), and the top inner wall of the babinet (1) is equipped with air pump
(6), partition plate (11) is installed, the top of the partition plate (11) is connected with the inner wall of babinet (1), institute on the left of the air pump (6)
State and top plate (7) be installed on the right side of partition plate (11), the left and right sides of the top plate (7) respectively with partition plate (11) and babinet (1)
Inner wall is connected, and the bottom of the top plate (7) is equipped with multiple filters (8), and the filter (8) runs through top plate (7), the mistake
The bottom of filter (8) is equipped with supporting plate (12), and the top corner of the supporting plate (12) is mounted on column (9), the supporting plate
(12) top installation marsupial body (10), the outer wall of the bag body (10) is connected with column (9), the outer wall of the bag body (10) and
The inner wall of top plate (7) is connected, and idler wheel (13) is equipped on the right side of the filter (8), and the inner cavity of the idler wheel (13) is equipped with
Bull stick (14), the inner wall of the rear and front end of the bull stick (14) with babinet (1) are connected, are equipped on the right side of the idler wheel (13)
Motor (15), the motor (15) are connected with the lower surface of top plate (7), and the shaft end of the motor (15) is equipped with motor wheel
(16), the motor wheel (16) is connected by belt (17) with idler wheel (13), and the outer wall of the idler wheel (13) is equipped with multiple tops
Bar (20), the inner cavity of the mandril (20) are equipped with the first spring (21), and the top of first spring (21) is equipped with connecting rod
(19), the top of the connecting rod (19) is equipped with pulley (18), and the pulley (18) and the outer right wall of filter (8) overlap phase
Even.
2. a kind of efficient pocket type air dust remover according to claim 1, it is characterised in that:The right side of the partition plate (11)
Side is equipped with first baffle (22), and the bottom outer wall of the first baffle (22) is equipped with second baffle (23), the second gear
The bottom of plate (23) is connected with the inner wall of babinet (1), and the inner cavity of the second baffle (23) is equipped with second spring (24), described
The top of second spring (24) is connected with first baffle (22), and the outer wall of the second baffle (23) is provided with multiple slots (27),
The 3rd spring (25) is installed on the right side of the bottom inner cavity of the first baffle (22), the right end of the 3rd spring (25) is equipped with
Inserted block (26), the inserted block (26) run through slot (27).
3. a kind of efficient pocket type air dust remover according to claim 1, it is characterised in that:The partition plate (11)
Left surface rubber slab (29) is installed.
4. a kind of efficient pocket type air dust remover according to claim 1-3, it is characterised in that:The foundation (3)
The left and right sides is mounted on mainstay (28).
5. a kind of efficient pocket type air dust remover according to claim 1-4, it is characterised in that:The air pump (6)
The left and right sides is mounted on fixture block (30), and the upper surface of the fixture block (30) is washed with the inner wall of babinet (1) to be connected.
A kind of 6. efficient pocket type air cleaning method, it is characterised in that:The external power supply of air pump 6 is connected, makes its start-up operation,
Blast exhaust gas into air inlet 2, exhaust gas flows down to the inner cavity of babinet 1 via partition plate 11, in air pump 6 along air admission hole 2
Under attraction, into filter 8, by and by entering the sky on 7 top of top plate after filtering at the bag body 10 on filter 8
Between, into gas outlet 4 under the promotion of air pump 6, filtering is completed, if bag body 10 is blocked because dust stratification is too many in the process,
The external power supply of connection motor 15 is needed, motor wheel 16 is made by belt idler wheel 13 to be driven to rotate, makes the cunning installed on idler wheel 13
Block 18 impacts the rightmost side on filter 8, overlaps the column 9 being connected with pulley 13 repeatedly, is shaken off dust stratification, via waste residue mouth 5
It drops out, and in shots, the first spring 21 of 20 inner cavity of mandril installation can stretch with impact, make coupled company
Bar 19 constantly passes in and out in the inner cavity of mandril 20, prevents from being more than between idler wheel 13 and filter 8 due to 18 extension elongation of pulley
Length and it is stuck, also preventing the impact of pulley 18, filter 8 is too quickly that filter 8 is caused to damage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711358585.4A CN108043132A (en) | 2017-12-17 | 2017-12-17 | A kind of efficient pocket type air dust remover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711358585.4A CN108043132A (en) | 2017-12-17 | 2017-12-17 | A kind of efficient pocket type air dust remover |
Publications (1)
Publication Number | Publication Date |
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CN108043132A true CN108043132A (en) | 2018-05-18 |
Family
ID=62133417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201711358585.4A Withdrawn CN108043132A (en) | 2017-12-17 | 2017-12-17 | A kind of efficient pocket type air dust remover |
Country Status (1)
Country | Link |
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CN (1) | CN108043132A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108970267A (en) * | 2018-07-26 | 2018-12-11 | 王自民 | A kind of timber production essence polishing workshop deduster |
CN111039522A (en) * | 2020-01-08 | 2020-04-21 | 海伟环境科技有限公司 | Equipment and method for purifying water by using natural resources |
CN112387065A (en) * | 2020-11-14 | 2021-02-23 | 湖南正达环保科技有限公司 | Organic waste gas nitrogen desorption recovery process |
CN114712955A (en) * | 2022-04-26 | 2022-07-08 | 王小凤 | Straight hole ceramic filter |
-
2017
- 2017-12-17 CN CN201711358585.4A patent/CN108043132A/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108970267A (en) * | 2018-07-26 | 2018-12-11 | 王自民 | A kind of timber production essence polishing workshop deduster |
CN108970267B (en) * | 2018-07-26 | 2020-08-14 | 绍兴柯桥新兴门业有限公司 | Dust remover for wooden door production precision polishing workshop |
CN111039522A (en) * | 2020-01-08 | 2020-04-21 | 海伟环境科技有限公司 | Equipment and method for purifying water by using natural resources |
CN111039522B (en) * | 2020-01-08 | 2020-11-10 | 海伟环境科技有限公司 | Equipment and method for purifying water by using natural resources |
CN112387065A (en) * | 2020-11-14 | 2021-02-23 | 湖南正达环保科技有限公司 | Organic waste gas nitrogen desorption recovery process |
CN112387065B (en) * | 2020-11-14 | 2023-03-28 | 湖南正达环保科技有限公司 | Organic waste gas nitrogen desorption recovery process |
CN114712955A (en) * | 2022-04-26 | 2022-07-08 | 王小凤 | Straight hole ceramic filter |
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Application publication date: 20180518 |