CN212068230U - Unorganized waste gas and dust recovery processing system for sublimation workshop - Google Patents
Unorganized waste gas and dust recovery processing system for sublimation workshop Download PDFInfo
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- CN212068230U CN212068230U CN202020548283.4U CN202020548283U CN212068230U CN 212068230 U CN212068230 U CN 212068230U CN 202020548283 U CN202020548283 U CN 202020548283U CN 212068230 U CN212068230 U CN 212068230U
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Abstract
The utility model discloses a non-tissue waste gas and dust recovery processing system in sublimation workshop, include: the collecting cover is used for collecting the volatilized waste gas and dust; a first pipe for connecting the collecting cover; the bag-type dust collector is communicated with the collecting cover through the first pipeline; the second pipeline is used for connecting the bag-type dust collector; the exhaust funnel is communicated with the bag-type dust collector through the second pipeline; the fan is arranged on the second pipeline; the bag-type dust collector comprises a dust hopper and a treatment barrel located above the dust hopper, a dust collector is arranged in the treatment barrel and comprises a first filter bag, a second filter bag and a third filter bag, and the first filter bag, the second filter bag and the third filter bag are sequentially arranged at intervals from bottom to top. The utility model discloses can collect unorganized waste gas and dust and realize organizing after the processing, collect the organic compound in dust and the waste gas and retrieve, practice thrift the resource, reduce the pollution to the environment.
Description
Technical Field
The utility model relates to a field is retrieved to meticulous chemical industry workshop unorganized waste gas and dust, what especially relate to is a sublimation workshop unorganized waste gas and dust recovery processing system.
Background
In the case of refining an organic compound, the present invention relates to a process of sublimating an organic compound, and 4,4' -diaminodiphenyl ether is used as an example.
The specific sublimation treatment process comprises the following steps: adding dried 4,4' -diaminodiphenyl ether into a material melting kettle, vacuumizing the material melting kettle, heating the material melting kettle to a temperature at which the 4,4' -diaminodiphenyl ether can be gasified, introducing the gasified 4,4' -diaminodiphenyl ether into a clean crystallization chamber, and cooling and crystallizing in the crystallization chamber. After the sublimation at high temperature is finished, opening the crystallization chamber to manually take out the 4,4 '-diaminodiphenyl ether, and putting the crude 4,4' -diaminodiphenyl ether in the material dissolving kettle again for the next sublimation.
However, the above sublimation treatment process has problems that: in the discharging and feeding processes, due to the fact that air flow with high temperature flows, dust volatilizes along with heat, and therefore product waste and environmental pollution are caused.
In view of this, the utility model provides a sublime workshop unorganized waste gas and dust recovery processing system can collect the recovery dust, has practiced thrift the resource, reduces the pollution to the environment.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a sublimation workshop unorganized waste gas and dust recovery processing system can be collected unorganized waste gas and dust and realize organizing after, collects the recovery with the organic compound in dust and the waste gas, has practiced thrift the resource, reduces the pollution to the environment.
The utility model discloses a solve above-mentioned technical problem through following technical scheme:
a sublimation plant unstructured waste gas and dust recovery processing system comprises:
the collecting cover is used for collecting the volatilized waste gas and dust;
a first pipe for connecting the collecting cover;
the bag-type dust collector is communicated with the collecting cover through the first pipeline;
the second pipeline is used for connecting the bag-type dust collector;
the exhaust funnel is communicated with the bag-type dust collector through the second pipeline;
and the fan is arranged on the second pipeline.
As the utility model discloses structural one kind is optimized, the fan is high-pressure high flow fan.
As the utility model discloses structural optimization, first pipeline is close to collection cover department and is provided with the draught fan.
As the utility model discloses structural optimization, the sack cleaner comprises ash bucket and the processing section of thick bamboo that is located the ash bucket top, be provided with dust collector in the processing section of thick bamboo.
As the utility model discloses structural optimization, dust collector includes first filter bag, second filter bag and third filter bag, first filter bag, second filter bag and third filter bag from bottom to top interval in proper order sets up, the aperture on first filter bag, second filter bag and the third filter bag reduces gradually to link together through the connecting rope between first filter bag, second filter bag and the third filter bag, just connecting rope ascending one end is fixed in on the interior roof of handling a section of thick bamboo, the edge fixed connection all around of first filter bag, second filter bag and third filter bag is on the inner wall of handling a section of thick bamboo for first filter bag, second filter bag and third filter bag are the horn mouth form, and the horn mouth of first filter bag, second filter bag and third filter bag is towards the ash bucket.
As the utility model discloses structural optimization, be provided with first vibrating motor on the roof in the processing section of thick bamboo, connect the ascending one end of rope and connect on this first vibrating motor's output shaft.
As the utility model discloses structural optimization, the equipartition has the couple on first filter bag, second filter bag and the third filter bag edge all around to be provided with on handling a section of thick bamboo inner wall and get in touch matched with link.
As the utility model discloses structural optimization, be connected with first filter disc, second filter disc and third filter disc on the edge all around of first filter bag, second filter bag and third filter bag respectively, on first filter disc, second filter disc and the third filter disc respectively the equipartition have with the same hole of aperture size on first filter bag, second filter bag and the third filter bag, and the periphery of first filter disc, second filter disc and third filter disc is connected on the sliding ring, and annular groove has been seted up on the inner wall of a processing section of thick bamboo, but sliding ring sliding connection is in this recess.
As the utility model discloses structural optimization, the second vibrating motor is installed to the recess bottom, second vibrating motor's output shaft is on the sliding ring.
As the utility model discloses structural optimization still includes cooling device, cooling device includes water tank, water pump and spiral cooling tank, spiral cooling tank sets up in the sack cleaner, and is located the lower part of sack cleaner, spiral cooling tank's both ends are connected with inlet tube and outlet pipe, the other end of inlet tube is worn out the sack cleaner and is stretched into in the water tank, the water pump is connected on the inlet tube, the outlet pipe is worn out the sack cleaner and is stretched into in the water tank
Compared with the prior art, the utility model discloses following advantage has mutually:
the system for recovering and treating the unorganized waste gas and the dust in the sublimation workshop can realize organized treatment after collecting the unorganized waste gas and the dust, collect and recover the dust and organic compounds in the waste gas, save resources and reduce the pollution to the environment;
specifically, the utility model discloses a set up the aperture in the sack cleaner and gradually dwindle first filter bag, second filter bag and third filter bag, can carry out coarse filtration through first filter bag to waste gas and dust in the sack cleaner earlier, then step by step fine filtration through second filter bag and third filter bag, outside the purpose of realizing waste gas and dust recovery processing, through the filtration one by one of first filter bag, second filter bag and third filter bag, alleviateed the impact of waste gas and dust to first filter bag, second filter bag and third filter bag, prevented that the filter bag from appearing the damaged condition at the during operation;
in addition, through the arrangement of the first vibration motor and the vibration action of the first vibration motor, dust attached to the first filter bag, the second filter bag and the third filter bag can be shaken down into the dust hopper, so that the first filter bag, the second filter bag and the third filter bag are prevented from being blocked by dust, and the subsequent recovery and filtration process is prevented from being influenced;
in addition, the utility model discloses still through connect with first filter disc, second filter disc and third filter disc respectively on the edge all around with first filter bag, second filter bag and third filter bag, can play further guard action to the filter bag to make first filter disc, second filter disc and third filter disc slidable connect on the inner wall of processing section of thick bamboo, and drive first filter disc, second filter disc and third filter disc through the second vibrating motor and vibrate from top to bottom, can make the dust on filter bag and first filter disc, second filter disc and the third filter disc shake in the ash bucket fast;
also the utility model discloses a cooling device who sets up in the sack cleaner can realize carrying out the purpose that the part subsides with 4,4' -diaminodiphenyl ether in dust and the waste gas, and then has reduced waste gas and dust to dust collector's impact, has prolonged dust collector's life.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the system for recycling and treating unorganized waste gas and dust in a sublimation workshop of the utility model;
fig. 2 is a schematic structural view of an embodiment of embodiment 1 of the present invention;
fig. 3 is a schematic structural view of another embodiment of embodiment 1 of the present invention;
fig. 4 is a schematic configuration diagram of another embodiment of embodiment 1 of the present invention;
fig. 5 is an enlarged view of a portion a in fig. 4;
fig. 6 is a schematic structural view of embodiment 2 of the present invention;
fig. 7 is a schematic structural view of embodiment 3 of the present invention;
reference numerals: 1. the collecting hood, 2, the sack cleaner, 3, the aiutage, 4, first pipeline, 5, the second pipeline, 6, the draught fan, 7, the fan, 8, the ash bucket, 9, a processing section of thick bamboo, 10, first filter bag, 11, the second filter bag, 12, the third filter bag, 13, the connecting rope, 14, first vibrating motor, 15, the couple, 16, the link, 17, first filter disc, 18, the second filter disc, 19, the third filter disc, 20, the sliding ring, 21, the recess, 22, the second vibrating motor, 23, the water tank, 24, the water pump, 25, spiral cooling tank, 26, inlet tube, 27, the outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or circuit connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
Embodiment 1:
as shown in fig. 1-5, the general structure of the system for recycling and treating unorganized waste gas and dust in sublimation workshop of the utility model is as follows:
this recovery processing system is established ties in proper order through the pipeline by collecting cover 1, sack cleaner 2 and aiutage 3 and forms, and is concrete, it is linked together through first pipeline 4 to collect between cover 1 and the sack cleaner 2, and then is linked together through second pipeline 5 between sack cleaner 2 and the aiutage 3, first pipeline 4 is close to and collects cover 1 department and is provided with draught fan 6, and then be provided with fan 7 on the second pipeline 5, and this fan 7 is high pressure high flow fan, just so forms a waste gas and dust recovery processing system, and concrete processing procedure is: open draught fan 6 and fan 7, collect through collecting cover 1 unorganized waste gas and the dust that the workshop produced in will sublimating earlier and collect in cover 1, then will collect waste gas and dust in cover 1 and send into sack cleaner 2 through first pipeline 4, then after the dust removal filtration of sack cleaner 2, powdery material remains in sack cleaner 2, thereby obtain the 4 of retrieving, 4' -diaminodiphenyl ether crude, and desorption 4,4' -diaminodiphenyl ether's waste gas, satisfy discharge standard, then under the effect of high-pressure high flow fan 7, discharge away by exhaust stack 3, and then organize the processing after collecting unorganized waste gas and dust, collect the recovery with 4 in dust and the waste gas, the resource is practiced thrift, also reduce the pollution to the environment simultaneously.
Further, collect cover 1 and set up in sublimation cauldron and crystallization chamber (not shown in the figure) top, can collect the waste gas and the dust that volatilize in the sublimation cauldron, it is concrete, collect cover 1 and be the horn mouth form to the horn mouth orientation sublimes cauldron and crystallization chamber, thereby carries out more abundant collection to the gas and the dust that volatilize in the sublimation cauldron.
The bag-type dust collector 2 is used as a core component for recycling waste gas and dust, and has the specific structure that: this sack cleaner 2 comprises ash bucket 8 and the processing section of thick bamboo 9 that is located ash bucket 8 top, ash bucket 8 is used for depositing the crude 4,4' -diaminodiphenyl ether of recovery, first pipeline 4 runs through ash bucket 8 and stretches into in ash bucket 8 to send into sack cleaner 2 with waste gas and dust in the first pipeline 4, and second pipeline 5 then stretches into in the processing section of thick bamboo 9, and this second pipeline 5 is located the top of processing section of thick bamboo 9, in order to realize the recovery processing to waste gas and dust, be provided with dust collector in the processing section of thick bamboo 9.
Specifically, above-mentioned dust collector includes first filter bag 10, second filter bag 11 and third filter bag 12, first filter bag 10, second filter bag 11 and third filter bag 12 interval from bottom to top sets up in proper order to link together through connecting rope 13 between first filter bag 10, second filter bag 11 and the third filter bag 12, and the ascending one end of connecting rope 13 is fixed in on the interior roof of handling a section of thick bamboo 9, and simultaneously, the edge all around of first filter bag 10, second filter bag 11 and third filter bag 12 is then fixed connection on the inner wall of handling a section of thick bamboo 9 for first filter bag 10, second filter bag 11 and third filter bag 12 are the horn mouth form, and the horn mouth of first filter bag 10, second filter bag 11 and third filter bag 12 is towards the ash bucket.
Preferably, the connection string 13 is located at the center of the first, second and third filter bags 10, 11 and 12, and the first, second and third filter bags 10, 11 and 12 are all filter bags of circular structure.
Further, be provided with first vibrating motor 14 on the roof in above-mentioned processing section of thick bamboo 9, the ascending one end of connecting rope 13 is connected on this first vibrating motor 14's output shaft, can be through this first vibrating motor 14 vibration like this, can shake the dust that is attached to first filter bag 10, second filter bag 11 and third filter bag 12 and fall into in the ash bucket 8, avoided first filter bag 10, second filter bag 11 and third filter bag 12 to be blockked up by the dust, influence subsequent recovery filtration process and go on.
As the utility model discloses a further improvement, the equipartition has couple 15 on can first filter bag 10, second filter bag 11 and third filter bag 12 edge all around to be provided with on handling a section of thick bamboo 9 inner wall with couple 15 matched with link 16, and this link 16 is along handling a section of thick bamboo 9 vertical three rows that are provided with, first filter bag 10, second filter bag 11 and third filter bag 12 hang in proper order on corresponding link 16, through the cooperation of couple 15 with link 16 promptly, realize hanging first filter bag 10, second filter bag 11 and third filter bag 12 the purpose in sack cleaner 2.
In addition, for the purpose of filtering and dedusting the exhaust gas and dust by the first filter bag 10, the second filter bag 11 and the third filter bag 12, the aperture of the first filter bag 10, the second filter bag 11 and the third filter bag 12 is gradually reduced, more specifically, the aperture of the third filter bag 12 is smaller than the diameter of 4,4' -diaminodiphenyl ether particles, and the aperture of the second filter bag 11 and the first filter bag 10 is larger than the diameter of 4,4' -diaminodiphenyl ether particles, specifically, assuming that the diameter of 4,4' -diaminodiphenyl ether particles is 100nm, the aperture of the second filter bag 11 may be 300-500nm, and the aperture of the first filter bag 10 may be 700-900nm, which is only exemplified, as long as the aperture of the first filter bag 10, the second filter bag 11 and the third filter bag 12 is gradually reduced, and the aperture of the third filter bag 12 is smaller than 4, the diameter of 4 '-diaminodiphenyl ether granule, and the aperture of second filter bag 11 and first filter bag 10 then is greater than the diameter of 4,4' -diaminodiphenyl ether granule can, like this, can carry out coarse filtration through first filter bag 10 waste gas and dust in the sack cleaner 2 earlier, then rethread second filter bag 11 and third filter bag 12 are finely filtered step by step, outside the purpose of realizing waste gas and dust recovery processing, through first filter bag 10, filtration one by one of second filter bag 11 and third filter bag 12, the impact of waste gas and dust to first filter bag 10, second filter bag 11 and third filter bag 12 has been alleviateed, the damaged condition has been prevented to appear in the filter bag during operation.
Embodiment 2:
referring to fig. 6, a 2 nd embodiment of the system for recycling and treating exhaust gas and dust according to the present invention is different from the 1 st embodiment in that: in order to protect the filter bags and collect dust into the dust hopper conveniently, the edges of the peripheries of the first filter bag 10, the second filter bag 11 and the third filter bag 12 are respectively connected with a first filter disc 17, a second filter disc 18 and a third filter disc 19, the first filter disc 17, the second filter disc 18 and the third filter disc 19 are respectively and uniformly provided with holes with the same aperture size as the first filter bag 10, the second filter bag 11 and the third filter bag 12, the first filter disc 17, the second filter disc 18 and the third filter disc 19 are of disc-shaped structures, the peripheries of the first filter disc 17, the second filter disc 18 and the third filter disc 19 are connected onto a sliding ring 20, the sliding ring 20 is of a cylindrical structure, an annular groove 21 is formed in the inner wall of the treatment cylinder 9, and the sliding ring can be connected into the groove in a sliding manner.
In addition, in order to shake the dust on the first filter disc 17, the second filter disc 18 and the third filter disc 19 into the dust hopper 8, the second vibration motor 22 is installed at the bottom of the groove 21, and the output shaft of the second vibration motor 22 is connected to the sliding ring 20, so that the sliding ring 20 can be driven to vibrate by the vibration of the second vibration motor 22, and further the first filter disc 17, the second filter disc 18 and the third filter disc 19 can be driven to vibrate up and down, and the filter bag and the dust on the first filter disc 17, the second filter disc 18 and the third filter disc 19 can be quickly shaken into the dust hopper 8.
Embodiment 3:
referring to fig. 7, a 3 rd embodiment of the system for recycling and treating exhaust gas and dust according to the present invention is different from the 2 nd embodiment in that: the recycling treatment system further comprises a cooling device, the cooling device comprises a water tank 23, a water pump 24 and a spiral cooling tank 25, the spiral cooling tank 25 is arranged in the bag-type dust collector 2 and is positioned at the bottom of the bag-type dust collector 2, an outlet of the first pipeline 4 is positioned below the spiral cooling tank 25, two ends of the spiral cooling tank 25 are connected with a water inlet pipe 26 and a water outlet pipe 27, the other end of the water inlet pipe 26 penetrates through the bag-type dust collector 2 and extends into the water tank 23, the water tank 23 is preferably fixedly connected to the bag-type dust collector 2, the water pump 24 is connected to the water inlet pipe 26 and is used for pumping cooling water in the water tank 23 into the spiral cooling tank 25, the water outlet pipe 27 penetrates through the bag-type dust collector 2 and extends into the water tank 23, and therefore when waste gas and dust with higher temperature sent into the ash bag-type dust collector 2 from the first pipeline 4 pass through the spiral cooling tank 25, carry out the heat exchange with spiral cooling tank 25, the temperature cooling, 4' -diaminodiphenyl ether in dust and the waste gas meets the cold crystallization of cooling and subsides in the ash bucket to the realization carries out the purpose that part subsides with 4,4' -diaminodiphenyl ether in dust and the waste gas, and then has reduced the impact of waste gas and dust to dust collector, has prolonged dust collector's life.
Further preferably, in order to enable the waste gas and the dust to perform more sufficient heat exchange with the spiral cooling tank 25, the spiral cooling tank 25 is vertically arranged, so that the contact time of the waste gas and the dust with the spiral cooling tank 25 is prolonged, and the purpose of settling more waste gas and dust is achieved.
To sum up, the utility model discloses a sublimation workshop inorganization waste gas and dust recovery processing system can realize organizing the processing after inorganization waste gas and dust are collected, collects the recovery with the organic compound in dust and the waste gas, has practiced thrift the resource, reduces the pollution to the environment.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a sublimation workshop unorganized waste gas and dust recovery processing system which characterized in that includes:
the collecting cover is used for collecting the volatilized waste gas and dust;
a first pipe for connecting the collecting cover;
the bag-type dust collector is communicated with the collecting cover through the first pipeline;
the second pipeline is used for connecting the bag-type dust collector;
the exhaust funnel is communicated with the bag-type dust collector through the second pipeline;
and the fan is arranged on the second pipeline.
2. The sublimation plant unstructured waste gas and dust recovery processing system of claim 1, wherein the fan is a high pressure high flow fan.
3. The system for recycling and treating unstructured waste gas and dust in a sublimation workshop according to claim 2, characterized in that an induced draft fan is arranged at the position, close to the collecting cover, of the first pipeline.
4. The system for recycling and treating the unorganized waste gas and the dust in the sublimation workshop as claimed in claim 1, wherein the bag-type dust remover is composed of an ash bucket and a treatment barrel located above the ash bucket, and a dust removing device is arranged in the treatment barrel.
5. The system for recycling and treating unorganized waste gas and dust in the sublimation workshop as claimed in claim 4, wherein the dust removing device comprises a first filter bag, a second filter bag and a third filter bag, the first filter bag, the second filter bag and the third filter bag are sequentially arranged from bottom to top at intervals, the apertures of the first filter bag, the second filter bag and the third filter bag are gradually reduced, the first filter bag, the second filter bag and the third filter bag are connected together through a connecting rope, the upward end of the connecting rope is fixed on the inner top wall of the treatment cylinder, and the peripheral edges of the first filter bag, the second filter bag and the third filter bag are fixedly connected to the inner wall of the treatment cylinder, so that the first filter bag, the second filter bag and the third filter bag are in a horn mouth shape, and the horn mouths of the first filter bag, the second filter bag and the third filter bag face the dust hopper.
6. The system for recycling and treating unstructured waste gas and dust in a sublimation workshop as claimed in claim 5, wherein a first vibrating motor is arranged on the top wall in the treatment barrel, and one upward end of the connecting rope is connected to an output shaft of the first vibrating motor.
7. The system for recycling and treating the unorganized waste gas and dust in the sublimation workshop as claimed in claim 5, wherein hooks are evenly distributed on the peripheral edges of the first filter bag, the second filter bag and the third filter bag, and a hanging ring matched with the hooks is arranged on the inner wall of the treatment cylinder.
8. The system for recycling and treating unorganized waste gas and dust in a sublimation workshop as claimed in claim 5, wherein the first filter bag, the second filter bag and the third filter bag are respectively connected with a first filter disc, a second filter disc and a third filter disc at their peripheral edges, the first filter disc, the second filter disc and the third filter disc are respectively and uniformly distributed with holes having the same size as the holes of the first filter bag, the second filter bag and the third filter bag, and the first filter disc, the second filter disc and the third filter disc are connected with a sliding ring at their peripheral edges, and the inner wall of the treatment cylinder is provided with an annular groove in which the sliding ring is slidably connected.
9. The system for recycling and treating unstructured waste gas and dust in a sublimation workshop as claimed in claim 8, wherein a second vibration motor is mounted at the bottom of the groove, and an output shaft of the second vibration motor is connected to a sliding ring.
10. The system for recycling and treating unorganized waste gas and dust in the sublimation workshop according to any one of claims 1 to 9, further comprising a cooling device, wherein the cooling device comprises a water tank, a water pump and a spiral cooling tank, the spiral cooling tank is arranged in the bag-type dust remover and is positioned at the lower part of the bag-type dust remover, a water inlet pipe and a water outlet pipe are connected to two ends of the spiral cooling tank, the other end of the water inlet pipe penetrates out of the bag-type dust remover and extends into the water tank, the water pump is connected to the water inlet pipe, and the water outlet pipe penetrates out of the bag-type dust remover and extends into the water tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020548283.4U CN212068230U (en) | 2020-04-13 | 2020-04-13 | Unorganized waste gas and dust recovery processing system for sublimation workshop |
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| CN202020548283.4U CN212068230U (en) | 2020-04-13 | 2020-04-13 | Unorganized waste gas and dust recovery processing system for sublimation workshop |
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| CN212068230U true CN212068230U (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359359A (en) * | 2020-04-13 | 2020-07-03 | 山东欧亚化工有限公司 | Unorganized waste gas and dust recovery processing system for sublimation workshop |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359359A (en) * | 2020-04-13 | 2020-07-03 | 山东欧亚化工有限公司 | Unorganized waste gas and dust recovery processing system for sublimation workshop |
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Granted publication date: 20201204 |