CN208493789U - A kind of industrial waste-gas purifier - Google Patents
A kind of industrial waste-gas purifier Download PDFInfo
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- CN208493789U CN208493789U CN201820949418.0U CN201820949418U CN208493789U CN 208493789 U CN208493789 U CN 208493789U CN 201820949418 U CN201820949418 U CN 201820949418U CN 208493789 U CN208493789 U CN 208493789U
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Abstract
A kind of industrial waste-gas purifier, including spray chamber, connecting tube, air-introduced machine and exhaust chimney, it is characterized by: spray chamber bottom is provided with liquid collection bath, spray chamber lower periphery is provided with air inlet pipe, even style grid are disposed in spray chamber from bottom to up, level-one packing layer, level-one spray unit, second level packing layer, second level spray unit and drying unit, level-one spray unit is by first layer spray tube, second layer spray tube, third layer spray tube, nozzle I and supervisor's composition, second level spray unit is by inlet, liquid reserve tank, vertical tube, transverse tube I, transverse tube II, transverse tube III and nozzle II composition, air inlet pipe is located between liquid collection bath and even style grid, exhaust chamber is provided with above drying unit, exhaust chamber is connect with connecting tube one end, the connecting tube other end is connect with air-introduced machine, air-introduced machine outlet is connect with exhaust chimney.The present apparatus is strong to the purified treatment ability of exhaust gas, and spray liquid recycles degree height, has good environmental benefit and economic benefit.
Description
Technical field
The utility model relates to industrial waste gas purifying processing technology fields, and in particular to a kind of industrial waste-gas purifier.
Background technique
With the fast development of economic society, people increasingly pay attention to environmental protection.In field of industrial production, construction environmental protection
Production line pushes Industrial Green to develop a wind vane for having become current industrial development.It is stainless in stainless steel industry production
The electroplating process of steel product can generate a large amount of exhaust gas, a large amount of noxious material be contained in these exhaust gas, therefore before discharge
It needs to carry out purified treatment, in order to avoid cause environmental pollution.
For the exhaust gas that quickly adequately purification stainless steel product generates in the plating process, applicant is in Publication No.
A kind of acid mist collecting spray equipment is disclosed in the application documents of CN207012765U, but is found in actual use, it should
Device is in the presence of ineffective to the exhaust-gas treatment of huge discharge, treatment fluid dosage is big, does not obtain the deficiencies of recycling.To understand
Certainly above-mentioned deficiency needs to develop the industrial waste gas purifying that a kind of exhaust-gas treatment ability is strong, effect is good and treatment fluid is Ke Xunhuanliyong
Equipment.
Utility model content
The purpose of this utility model is to provide a kind of industrial waste-gas purifiers, are designed by structure, solve existing skill
, treatment fluid ineffective to the exhaust-gas treatment of huge discharge present in art consumes big problem.To achieve the above object, this is practical
The technical solution of novel offer is as follows:
A kind of industrial waste-gas purifier, including spray chamber, connecting tube, air-introduced machine and exhaust chimney, it is characterised in that: spray
Leaching room bottom is provided with liquid collection bath, and spray chamber lower periphery is provided with air inlet pipe, sets gradually from bottom to up in spray chamber
There are even style grid, level-one packing layer, level-one spray unit, second level packing layer, second level spray unit and drying unit, level-one spray
Unit is made of first layer spray tube, second layer spray tube, third layer spray tube, nozzle I and supervisor, second level spray unit by into
Liquid mouth, liquid reserve tank, vertical tube, transverse tube I, transverse tube II, transverse tube III and nozzle II composition, air inlet pipe are located at liquid collection bath and even style
Between grid, it is provided with exhaust chamber above drying unit, exhaust chamber is connect with connecting tube one end, and the connecting tube other end and air-introduced machine connect
It connects, air-introduced machine outlet is connect with exhaust chimney.
Further, the spray chamber is divided into level-one spray chamber, steam flow deceleration divergent segment, second level spray chamber from bottom to up,
The even style grid, level-one packing layer, level-one spray unit are set in level-one spray chamber, the second level packing layer, second level spray
Leaching unit is set in second level spray chamber, and the steam flow deceleration divergent segment is from level-one spray chamber to cuing open second level spray chamber
Face is funnel shaped steam flow buffer layer.
Further, the level-one packing layer, second level packing layer are ladder ring packing layer.
Further, the liquid collection bath is provided with drain pipe.
Further, the liquid collection bath periphery is provided with acid-proof pump.
Further, the supervisor is that inverted L-shaped is arranged, in the corner of inverted L-shaped, is provided with rotating device, can drive
The vertical section of supervisor, which is done, at the uniform velocity to be rotated.
Further, the first layer spray tube, second layer spray tube, third layer spray tube are inclined at from the bottom to top
Be responsible in vertical section, first layer spray tube, second layer spray tube, third layer spray tube quantity be the six roots of sensation, first layer spray
Three row's nozzle Is are offered on pipe, second layer spray tube, third layer spray tube；
Inclination angle between first layer spray tube, second layer spray tube, third layer spray tube and horizontal plane is 5~17 °, adjacent
Two first layer spray tube floor projection angles be 60 °, two adjacent second layer spray tube floor projection angles are 60 °,
Two adjacent third layer spray tube floor projection angles are 60 °, first layer spray tube nearest second layer spray tube water therewith
Flat projection angle is 20 °, and nearest third layer spray tube floor projection angle is 20 ° to second layer spray tube therewith.
Further, nozzle I described in an intermediate row is located at first layer spray tube, second layer spray tube, third layer spray tube
Bottom end, the adjacent two rows nozzle I first layer spray tube, second layer spray tube, third layer spray tube section on angle
It is 45 °.
Further, inlet setting is connected at the top and bottom of liquid reserve tank middle position, liquid reserve tank with number row's transverse tube I,
The every transverse tube I is connect with several vertical tubes, is provided with several cross between two vertical tubes adjacent along vertical I axis direction of transverse tube
Pipe II is provided with several transverse tubes III between two vertical tubes adjacent along I axis direction of transverse tube.
Further, transverse tube II, transverse tube III are connected to liquid reserve tank.
Further, transverse tube II is separately arranged in the vertical direction with transverse tube III.
Further, vertical tube, transverse tube II, symmetrically offer nozzle II on III axial plane of transverse tube.
Further, it is trapezoidal that the exhaust chamber, which is section,.
Further, three layers of agstone last layer are provided in the drying unit.
Further, three layers of agstone last layer in the drying unit are cone shape.
The beneficial effects of the utility model are:
1, flowing velocity distribution unevenness of the exhaust gas on the cross section of purification device seriously affects exhaust purification efficiency
One of key factor, the utility model between air inlet pipe and level-one packing layer by being arranged even style grid, when exhaust gas enters spray
When drenching room, steam flow is carried out by even style grid being uniformly distributed processing first, tentatively ensure that exhaust gas is imitated in the processing of spray chamber
Fruit.
2, level-one packing layer and second level packing layer is respectively set in level-one spray unit and second level spray unit lower part, and fills out
The bed of material carries out filler using cascade ring, mass transfer area is effectively increased, to increase the haptoreaction of exhaust gas and spray liquid
Time improves purified treatment efficiency.
3, rotating device, during spray, the three of level-one spray unit are provided on the supervisor of level-one spray unit
Layer spray tube rotates while spraying, and not only plays the role of uniformly draining to steam flow, also be stirred by the rotation of three layers of spray tube
So that steam flow and spray liquid are mixed more sufficiently, further enhance spray liquid and exhaust gas reacts order of contact for the effect of mixing.
4, section is provided between level-one spray chamber and second level spray chamber is funnel shaped steam flow deceleration divergent segment, is made
Exhaust gas after the reaction of level-one spray chamber enters the space enlargement of second level spray chamber, speed slows down, and the steam flow slowed down is widened two
Grade spray chamber will obtain more fully more fully gas-liquid two-phase haptoreaction, so that it is guaranteed that clean-up effect.
5, three layers of agstone last layer in drying unit are disposed as cone shape, circle compared with prior art,
The inner surface area of circular cone is bigger thus bigger with the steam contact area after spray process, to the water vapor absorption in steam
It is stronger.
6, provided with acid-proof pump and drain pipe able to turn on or off, the liquid in liquid collection bath is followed by acid-proof pump
Ring enters spray unit and carries out spray operation, is then turned on drain pipe after the concentration of spray liquid reaches certain standard and is arranged
It puts, acid mist liquid is absorbed in liquid collection bath compared with prior art by drain pipe direct emission, the utility model is to spray
Leaching liquid, which realizes, to be recycled, and the use cost of spray liquid is reduced.
In conclusion compared with prior art, the utility model is designed by functional structure, to the purified treatment energy of exhaust gas
Power is stronger, to spray liquid to recycle degree higher, there is better environmental benefit and economic benefit.
Detailed description of the invention
Fig. 1 shows the structure chart of the utility model；
Fig. 2 shows the structural schematic diagrams of the utility model first layer spray tube；
Fig. 3 shows the structural schematic diagram of the utility model second layer spray tube；
The nozzle that Fig. 4 shows the utility model vertical tube opens up schematic diagram；
The nozzle that Fig. 5 shows the utility model transverse tube opens up schematic diagram.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which:
1, spray chamber, 10, steam flow deceleration divergent segment, 11, liquid collection bath, 111, drain pipe, 112, acid-proof pump, 12, into
Tracheae, 13, even style grid, 141, level-one packing layer, 142, second level packing layer, 15, level-one spray unit, 151, first layer spray
Pipe, 152, second layer spray tube, 153, third layer spray tube, 154, nozzle I, 155, supervisor, 16, second level spray unit, 161,
Inlet, 162, liquid reserve tank, 163, vertical tube, 164, transverse tube I, 165, transverse tube II, 166, transverse tube III, 167, nozzle II, 17, drying
Unit, 18, exhaust chamber；2, connecting tube；3, air-introduced machine；4, exhaust chimney.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.
As shown in Fig. 1,2,3,4,5, a kind of industrial waste-gas purifier, including spray chamber 1, connecting tube 2,3 and of air-introduced machine
Exhaust chimney 4, it is characterised in that: 1 bottom of spray chamber is provided with liquid collection bath 11, and 1 lower periphery of spray chamber is provided with air inlet
Pipe 12 is disposed with even style grid 13, level-one packing layer 141, level-one spray unit 15, second level in spray chamber 1 from bottom to up
Packing layer 142, second level spray unit 16 and drying unit 17, level-one spray unit 15 are sprayed by first layer spray tube 151, the second layer
Shower pipe 152,155 composition of third layer spray tube 153, nozzle I 154 and supervisor, second level spray unit 16 is by inlet 161, liquid storage
Case 162, vertical tube 163, transverse tube I 164, transverse tube II 165, transverse tube III 166 and nozzle II 167 form, and air inlet pipe 12 is located at liquid receipts
Collect between pond 11 and level-one spray unit 15, exhaust chamber 18, exhaust chamber 18 and 2 one end of connecting tube are provided with above drying unit 17
Connection, 2 other end of connecting tube are connect with air-introduced machine 3, and the outlet of air-introduced machine 3 is connect with exhaust chimney 4.
Preferably, the spray chamber 1 is divided into level-one spray chamber, steam flow deceleration divergent segment 10, second level spray chamber from bottom to up,
The even style grid 13, level-one packing layer 141, level-one spray unit 15 are set in level-one spray chamber, the second level packing layer
142, second level spray unit 16 is set in second level spray chamber, and the steam flow deceleration divergent segment 10 is from level-one spray chamber to second level
Section between spray chamber is funnel shaped steam flow buffer layer.
Preferably, the level-one packing layer, second level packing layer are ladder ring packing layer.
Preferably, the liquid collection bath 11 is provided with drain pipe 111 able to turn on or off.
Preferably, 11 periphery of liquid collection bath is provided with acid-proof pump 112.
Preferably, the supervisor 155 arranges for inverted L-shaped, in the corner of inverted L-shaped, is provided with rotating device, can drive
The vertical section of supervisor 155, which is done, at the uniform velocity to be rotated.
Preferably, first layer spray tube 151, second layer spray tube 152, third layer spray tube 153 tilt set from the bottom to top
Set on being responsible for 155 vertical sections, first layer spray tube 151, second layer spray tube 152, third layer spray tube 153 and horizontal plane it
Between inclination angle be 5~17 °, first layer spray tube 151, second layer spray tube 152, third layer spray tube 153 quantity be six
Root, two adjacent first layer spray tubes 151, second layer spray tube 152,153 floor projection angle of third layer spray tube are
60 °, nearest 152 floor projection angle of second layer spray tube is 20 ° to first layer spray tube 151 therewith, second layer spray tube 152
Nearest 153 floor projection angle of third layer spray tube is 20 ° therewith, first layer spray tube 151, second layer spray tube 152,
Three row's nozzle Is 154 are offered on three layers of spray tube 153, intermediate row's nozzle I 154 is located at first layer spray tube 151, second
The cross sectional bottom end of layer spray tube 152, third layer spray tube 153, adjacent two rows nozzle I 154 is in first layer spray tube 151, second
Angle on layer spray tube 152,153 section of third layer spray tube is 45 °.Spray liquid can be made by intersecting the spray tube being staggeredly arranged
Body covers entire spray chamber 1, and the harmful substance in exhaust gas is enabled rapidly to be neutralized absorption.
Preferably, the setting of inlet 161 is in 162 middle position of liquid reserve tank, 162 top and bottom of liquid reserve tank and number row's transverse tube
I 164 connections, every transverse tube I 164 are connect with several vertical tubes 163, the two piece vertical tubes adjacent along vertical I 164 axis direction of transverse tube
It is provided with several transverse tubes II 165 between 163, is provided between two vertical tubes 163 adjacent along I 164 axis direction of transverse tube several
Transverse tube III 166, transverse tube II 165 separately arrange in the vertical direction with transverse tube III 166, transverse tube II 165 and transverse tube III 166 with
Liquid reserve tank connection, vertical tube 163, transverse tube II 165 symmetrically offer nozzle II 167 on III 166 axial plane of transverse tube.A large amount of arranged crosswises
Vertical tube 163, transverse tube I 164, transverse tube II 165 and transverse tube III 166 can take entire second level spray unit 16 so that exhaust gas steam
It can only be flowed through in the gap between vertical tube 163, transverse tube I 164, transverse tube II 165 and transverse tube III 166, substantially prolong exhaust gas steam
With the time of contact of ejecting liquid, the harmful substance in exhaust gas is fully absorbed.
Preferably, three layers of cone shape agstone last layer are provided in drying unit 17, drying unit 17 can deviate from warp
The moisture of steam after spray process makes moist steam become the gas of dry cleansing, avoids last exhaust pollution atmosphere.
The working principle and process of the utility model:
The suitable spray liquid of injection in liquid collection bath 11, starting acid-proof pump 112 spray level-one spray unit 15 and second level
It drenches and is full of spray liquid in unit 16, then start air-introduced machine 3；Exhaust gas enters spray chamber 1 by air inlet pipe 12, passes through even style first
Grid 13 carry out uniform divided flows, then by level-one packing layer 141, packing layer effectively expands mass transfer area in conjunction with spray liquid,
Biphase gas and liquid flow is promoted to come into full contact with；It meets, sprays by the ejecting liquid that the exhaust gas of level-one packing layer 141 is sprayed with nozzle I 154
It drenches liquid to absorb the harmful substance in exhaust gas steam, later fall into liquid collection bath 11, exhaust gas is by first time washing, purifying.
During spraying first time, level-one spray unit sprays while rotating, and obtains exhaust gas with spray liquid uniform and abundant
Contact, so that harmful substance most in exhaust gas steam be made all to be neutralized absorption, only few part can be worn with steam
More level-one spray chamber, into second level spray chamber；During entering second level spray chamber across the exhaust gas steam of level-one spray chamber, warp
It crosses steam flow deceleration divergent segment 10 and makes the retarded control of the flow velocity of steam flow, come into full contact with reaction in second level spray chamber for steam
Carry out basis；Into after second level spray chamber, steam is contacted with second level packing layer 142 first, then passes through second level spray unit 16
It flows up；During passing through second level spray unit 16, due to vertical tube 163, transverse tube I 164, transverse tube II 165 and transverse tube III 166
Retardation, steam flow velocity further slows down, the time of contact of the ejecting liquid sprayed with nozzle II 167 will be extended so that
Exhaust gas is fully absorbed, and is then instilled in liquid collection bath 11 with ejecting liquid；Across the steam of second level spray unit 16
Into drying unit 17, the moisture in steam will be absorbed by limestone powder in drying unit 17, become dry cleansing gas, be done
Enter exhaust chamber 18 after dry clean gas, enter back into connecting tube 2, finally passes through exhaust chimney 4 under the action of air-introduced machine 3
It arranges the liquid to atmosphere, and in liquid collection bath 11 and will go successively to spray unit by acid-proof pump and carry out spray operation, until
After the concentration of liquid reaches certain standard, drain pipe 111 is opened by dope and is transported to next process unit, is further located
Reason, and liquid collection bath 11 then injects new spray liquid and carries out operation.
The present apparatus is designed by functional structure, stronger to the purified treatment ability of exhaust gas, is able to satisfy at the exhaust gas of huge discharge
Reason, to spray liquid to recycle degree higher, there is better environmental benefit and economic benefit.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of industrial waste-gas purifier, including spray chamber (1), connecting tube (2), air-introduced machine (3) and exhaust chimney (4),
Be characterized in that: spray chamber (1) bottom is provided with liquid collection bath (11), and liquid collection bath (11) periphery is provided with acid-proof pump
(112), spray chamber (1) lower periphery is provided with air inlet pipe (12), is disposed with even style grid from bottom to up in spray chamber (1)
(13), level-one packing layer (141), level-one spray unit (15), second level packing layer (142), second level spray unit (16) and drying
Unit (17), level-one spray unit (15) is by first layer spray tube (151), second layer spray tube (152), third layer spray tube
(153), nozzle I (154) and supervisor (155) composition, second level spray unit (16) is by inlet (161), liquid reserve tank (162), perpendicular
It manages (163), transverse tube I (164), transverse tube II (165), transverse tube III (166) and nozzle II (167) composition, air inlet pipe (12) and is located at liquid
Be provided with exhaust chamber (18) between body collecting pit (11) and even style grid (13), above drying unit (17), exhaust chamber (18) with
The connection of connecting tube (2) one end, connecting tube (2) other end are connect with air-introduced machine (3), and air-introduced machine (3) outlet connects with exhaust chimney (4)
It connects.
2. a kind of industrial waste-gas purifier according to claim 1, it is characterised in that: the spray chamber (1) from down toward
On be divided into level-one spray chamber, steam flow deceleration divergent segment (10), second level spray chamber, the even style grid (13), level-one packing layer
(141), level-one spray unit (15) is set in level-one spray chamber, the second level packing layer (142), second level spray unit (16)
It is set in second level spray chamber, the steam flow deceleration divergent segment (10) is from level-one spray chamber to the section second level spray chamber
For funnel shaped steam flow buffer layer.
3. a kind of industrial waste-gas purifier according to claim 1, it is characterised in that: the level-one packing layer (141),
Second level packing layer (142) is ladder ring packing layer.
4. a kind of industrial waste-gas purifier according to claim 1, it is characterised in that: the liquid collection bath (11) sets
It is equipped with drain pipe able to turn on or off (111).
5. a kind of industrial waste-gas purifier according to claim 1, it is characterised in that: the supervisor (155) is inverted L-shaped
Arrangement, in the corner of inverted L-shaped, is provided with rotating device, the vertical section of supervisor (155) can be driven to do and at the uniform velocity rotated.
6. a kind of industrial waste-gas purifier according to claim 1, it is characterised in that: the first layer spray tube
(151), second layer spray tube (152), third layer spray tube (153) are inclined at from the bottom to top in supervisor (155) vertical section,
The first layer spray tube (151), second layer spray tube (152), third layer spray tube (153) quantity be the six roots of sensation, it is described
First layer spray tube (151), second layer spray tube (152) offer three row's nozzle Is on third layer spray tube (153)
(154)；
Inclining between the first layer spray tube (151), second layer spray tube (152), third layer spray tube (153) and horizontal plane
Angle is 5~17 °, and two adjacent first layer spray tube (151) floor projection angles are 60 °, adjacent two second layers spray
Managing (152) floor projection angle is 60 °, and two adjacent third layer spray tube (153) floor projection angles are 60 °, described the
Nearest second layer spray tube (152) floor projection angle is 20 ° to one layer of spray tube (151) therewith, the second layer spray tube
(152) nearest third layer spray tube (153) floor projection angle is 20 ° therewith；
Nozzle I (154) described in an intermediate row is located at first layer spray tube (151), second layer spray tube (152), third layer spray
The bottom end of (153) is managed, the adjacent two rows nozzle I (154) is in first layer spray tube (151), second layer spray tube (152), the
Angle on three layers of spray tube (153) section is 45 °.
7. a kind of industrial waste-gas purifier according to claim 1, it is characterised in that: inlet (161) setting
It is connected at the top and bottom of liquid reserve tank (162) middle position, the liquid reserve tank (162) with number row transverse tube I (164), described in every
Transverse tube I (164) is connect with several vertical tubes (163), between two vertical tubes (163) adjacent along vertical transverse tube I (164) axis direction
Several transverse tubes II (165) are provided with, are provided with several cross between two vertical tubes (163) adjacent along transverse tube I (164) axis direction
Pipe III (166)；
The transverse tube II (165), transverse tube III (166) are connected to liquid reserve tank；
The transverse tube II (165) is separately arranged in the vertical direction with transverse tube III (166)；
The vertical tube (163), transverse tube II (165) symmetrically offer nozzle II (167) on transverse tube III (166) axial plane.
8. a kind of industrial waste-gas purifier according to claim 1, it is characterised in that: set in the drying unit (17)
It is equipped with three layers of agstone last layer.
9. a kind of industrial waste-gas purifier according to claim 8, it is characterised in that: three layers of agstone last layer
It is cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820949418.0U CN208493789U (en) | 2018-06-20 | 2018-06-20 | A kind of industrial waste-gas purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820949418.0U CN208493789U (en) | 2018-06-20 | 2018-06-20 | A kind of industrial waste-gas purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208493789U true CN208493789U (en) | 2019-02-15 |
Family
ID=65285654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820949418.0U Active CN208493789U (en) | 2018-06-20 | 2018-06-20 | A kind of industrial waste-gas purifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN208493789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832605A (en) * | 2022-04-24 | 2022-08-02 | 安徽顺达环保科技股份有限公司 | Combined type combined denitration equipment for sintering flue gas treatment and implementation method thereof |
| CN117101387A (en) * | 2023-09-27 | 2023-11-24 | 安徽虹泰新材料股份有限公司 | Polyamide resin production waste gas treatment equipment and treatment process |
-
2018
- 2018-06-20 CN CN201820949418.0U patent/CN208493789U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832605A (en) * | 2022-04-24 | 2022-08-02 | 安徽顺达环保科技股份有限公司 | Combined type combined denitration equipment for sintering flue gas treatment and implementation method thereof |
| CN114832605B (en) * | 2022-04-24 | 2023-11-21 | 安徽顺达环保科技股份有限公司 | Combined type combined denitration device for sintering flue gas treatment and implementation method thereof |
| CN117101387A (en) * | 2023-09-27 | 2023-11-24 | 安徽虹泰新材料股份有限公司 | Polyamide resin production waste gas treatment equipment and treatment process |
| CN117101387B (en) * | 2023-09-27 | 2024-03-19 | 安徽虹泰新材料股份有限公司 | Polyamide resin production waste gas treatment equipment and treatment process |
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Address after: 614900 317-3 Jiaxing Road, Jianong Town, Shawan District, Leshan City, Sichuan Province Patentee after: Sichuan Hongwang Stainless Steel Co., Ltd Address before: 618000 Jiaxing Road 317-3, Jianong Town, Shawan District, Leshan City, Sichuan Province Patentee before: SICHUAN TIANHONG STAINLESS STEEL Co.,Ltd. |