CN220257618U - Flue gas absorption tower of heat conduction oil furnace for producing DMC - Google Patents
Flue gas absorption tower of heat conduction oil furnace for producing DMC Download PDFInfo
- Publication number
- CN220257618U CN220257618U CN202321539258.XU CN202321539258U CN220257618U CN 220257618 U CN220257618 U CN 220257618U CN 202321539258 U CN202321539258 U CN 202321539258U CN 220257618 U CN220257618 U CN 220257618U
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- flue gas
- oil furnace
- conduction oil
- aeration
- 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.)
- Active
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 80
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003546 flue gas Substances 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000005273 aeration Methods 0.000 claims abstract description 31
- 239000007921 spray Substances 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000007790 scraping Methods 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 241001233242 Lontra Species 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the technical field of flue gas treatment equipment, and particularly relates to a flue gas absorption tower of a heat conduction oil furnace for producing DMC, which comprises an absorption tower, a top cover, a water inlet pipe, a water outlet pipe, an air inlet assembly, a spray assembly, an aeration assembly, a cleaning assembly, a filter body, an upper screen plate and a lower screen plate, wherein the top cover is detachably arranged at the top of the absorption tower through bolts, the air outlet pipe is fixedly arranged on the top cover, the filter body is detachably arranged in the top cover, the upper screen plate is fixedly arranged on the inner wall of the absorption tower, and the upper screen plate is in contact with the filter body. The utility model has reasonable design and simple operation, can perform aeration, spraying and filtering operation on the flue gas of the heat-conducting oil furnace for producing DMC, can improve the contact time between the flue gas of the heat-conducting oil furnace for producing DMC and the absorption liquid, effectively improves the treatment effect of the flue gas of the heat-conducting oil furnace for producing DMC, and is convenient for dismounting and replacing the filter body.
Description
Technical Field
The utility model relates to the technical field of flue gas treatment equipment, in particular to a flue gas absorption tower of a heat conduction oil furnace for producing DMC.
Background
DMC (dimethyl cyclosiloxane) is a chemical substance mainly used for ring-opening polymerization to obtain silicone oil, silicone rubber and the like with different polymerization degrees. The DMC production system is equipped with a heat conduction oil furnace, and takes coal or biomass such as straw, rice husk, bark and the like as fuel, so that flue gas containing particulate matters, nitrogen oxides and sulfur dioxide can be released, and the flue gas can be discharged after being treated.
The prior patent of the publication CN 207507210U, which is searched, discloses a flue gas absorber of a heat conduction oil furnace for producing DMC, comprising: the adsorption chamber is arranged at the bottom of the absorption tower, a primary active carbon bed layer and a secondary active carbon bed layer are arranged in the adsorption chamber, the air inlet pipe is obliquely inserted into the side wall of the adsorption chamber, and the top of the adsorption chamber is provided with an air outlet of the adsorption chamber; and the alkali spraying chamber is communicated with the adsorption chamber through an air outlet of the adsorption chamber, and a rotary table and a spraying pipe are arranged at the top of the alkali spraying chamber.
According to the research, the above patent only carries out the treatment of the flue gas of the heat conduction oil furnace for producing DMC by a spraying mode, the contact time between the absorption liquid for treating the flue gas of the heat conduction oil furnace for producing DMC and the flue gas of the heat conduction oil furnace for producing DMC is shorter, the reaction time is limited, the condition of incomplete treatment of harmful substances in the flue gas is easily caused, thereby affecting the treatment effect, meanwhile, a little particle is generated in the flue gas treatment process of the heat conduction oil furnace for producing DMC, and the adhesion is easy to adhere to the inner wall of the absorption tower, and the prior patent does not have the cleaning function and can affect the practicability, so the utility model provides the flue gas absorption tower for producing the heat conduction oil furnace for producing DMC, which is used for solving the problems.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides a flue gas absorption tower of a heat conduction oil furnace for producing DMC.
The technical aim of the utility model is realized by the following technical scheme: a flue gas absorption tower of a heat conduction oil furnace for producing DMC comprises an absorption tower, a top cover, a water inlet pipe, a water outlet pipe, an air inlet component, a spray component, an aeration component, a cleaning component, a filter body, an upper screen plate and a lower screen plate;
the top cap passes through bolt demountable installation at the top of absorption tower, outlet duct fixed mounting is on the top cap, filter body demountable installation is in the top cap, go up otter board fixed mounting on the inner wall of absorption tower, and go up otter board and filter body contact, spray assembly and intake assembly all set up on the absorption tower, the aeration assembly sets up in the absorption tower, clean subassembly sets up on the aeration assembly, and down the otter board setting on clean subassembly, business turn over water pipe fixed mounting is in the outside bottom of absorption tower.
Preferably, the air inlet assembly comprises an exhaust fan, an air inlet pipe and a conveying pipe, the exhaust fan is fixedly arranged on the outer side of the absorption tower, the air inlet pipe is fixedly arranged on the air inlet of the exhaust fan, and the same conveying pipe is fixedly arranged at the air outlet of the exhaust fan and the bottom of the absorption tower.
Preferably, the aeration assembly comprises a hollow plate I and a plurality of aeration pipes, the hollow plate I is rotatably arranged on a conveying pipe, the conveying pipe is communicated with the hollow plate I, the hollow plate I is fixedly provided with the plurality of aeration pipes, the bottom ends of the plurality of aeration pipes are communicated with the hollow plate I, the aeration pipes are provided with the plurality of aeration holes, the inner wall of the top of the hollow plate I is fixedly provided with a fixing shaft, and the bottom end of the fixing shaft extends into the conveying pipe and is fixedly sleeved with fan blades.
Preferably, the cleaning component comprises two scraping plates and two scraping strips, the two scraping plates are fixedly arranged on the bottom side of the hollow slab I, the scraping strips are fixedly arranged on the two aeration pipes close to the side wall of the absorption tower, the lower screen plate is fixedly arranged on the two scraping strips, and the scraping plates and the scraping strips are in contact with the inner wall of the absorption tower.
Preferably, the spray assembly comprises a water pump, a hollow plate II and a plurality of spray heads, the hollow plate II is fixedly arranged on the side wall of the absorption tower, the spray heads are fixedly arranged on the bottom side of the hollow plate II and are communicated with the inner cavity of the hollow plate II, the water pump is fixedly arranged on the outer side of the absorption tower, the water outlet pipe of the water pump is communicated with the hollow plate II, and the water inlet pipe of the water pump extends into the absorption tower and is positioned below the lower screen plate.
Preferably, a filter plate is fixedly arranged on a water inlet pipe of the water pump.
Preferably, a strip-shaped opening is formed in the absorption tower, and a glass strip is fixedly arranged in the strip-shaped opening in a sealing manner.
The beneficial effects of the utility model are as follows: in the utility model, the flue gas of the heat conduction oil furnace for producing DMC can be conveyed into the absorption tower through the air inlet component, and is dispersed and injected into the absorption liquid under the action of the aeration component, the floating speed of bubbles can be delayed through the arranged lower screen plate, and the bubbles can be sprayed again after being separated from the absorption liquid under the action of the spraying component, and the bubbles are filtered again through the filter body and discharged after the spraying treatment.
The mode that uses bolted connection through with absorption tower and top cap is convenient for dismantle the top cap to the convenience is changed the filter, can clear up the operation to the inner wall of absorption tower under clean assembly's cooperation at aeration assembly during operation simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a flue gas absorption tower of a heat conduction oil furnace for producing DMC according to the present utility model;
FIG. 2 is a schematic cross-sectional view of a flue gas absorber of a heat transfer oil furnace for DMC production according to the present utility model;
fig. 3 is a schematic structural diagram of a portion a of a flue gas absorber of a heat conduction oil furnace for producing DMC according to the present utility model.
In the figure: 1. an absorption tower; 11. a water inlet pipe and a water outlet pipe; 12. a top cover; 13. an air outlet pipe; 14. a screen plate is arranged; 15. a filter body; 2. an exhaust fan; 21. an air inlet pipe; 22. a delivery tube; 3. a hollow slab I; 301. a fixed shaft; 302. a fan blade; 31. a scraper; 32. an aeration pipe; 33. scraping the strip; 34. a lower screen plate; 4. a hollow slab II; 41. and (3) a water pump.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Referring to figures 1-3, a flue gas absorption tower of a heat conduction oil furnace for producing DMC comprises an absorption tower 1, a top cover 12, a water inlet pipe 11, a water outlet pipe 13, a filter 15, an upper screen 14 and a lower screen 34, wherein the top cover 12 is detachably mounted at the top of the absorption tower 1 through bolts, the air outlet pipe 13 is fixedly mounted on the top cover 12, the filter 15 is detachably mounted in the top cover 12, the upper screen 14 is fixedly mounted on the inner wall of the absorption tower 1, the upper screen 14 is contacted with the filter 15, an exhaust fan 2 is fixedly mounted at the outer side of the absorption tower 1, an air inlet pipe 21 is fixedly mounted at the air inlet of the exhaust fan 2, an air outlet of the exhaust fan 2 and the bottom of the absorption tower 1 are fixedly mounted with the same conveying pipe 22, tail gas can be conveyed into the absorption tower 1, the hollow slab 3 is rotatably mounted with the conveying pipe 22, the conveying pipe 22 is communicated with the hollow slab 3, a plurality of aeration pipes 32 are fixedly mounted on the hollow slab 3, the bottom ends of the hollow slab 3 are respectively provided with a plurality of aeration pipes 32, a plurality of aeration pipes 301 are fixedly mounted at the hollow slab 1, the two side walls 301 are fixedly mounted at the bottom ends of the hollow slab 4 are fixedly connected with the two inner side walls of the hollow slab 4, and the two hollow slab 4 are fixedly arranged at the two side walls of the hollow slab 4, and the two side of the hollow slab 4 are fixedly connected with the inner side of the hollow slab 4 are fixedly arranged, and the two side of the hollow slab 4 are fixedly arranged, and the hollow slab 4 is fixedly inside the hollow slab is far from the hollow slab 4 is inside the hollow slab is 4, and inside the hollow slab is 4 is inside the hollow slab is 4, and the hollow slab is 3 is inside a 3 is inside the hollow slab is 3 and the a fixed, the outside fixed mounting of absorption tower 1 has water pump 41, the outlet pipe of water pump 41 is linked together with hollow board two 4, the inlet tube of water pump 41 extends to in the absorption tower 1 and is located the below of lower otter board 34, can extract and carry its hollow board two 4 with the absorption liquid in the absorption tower 1, then spray the operation under the cooperation of a plurality of shower heads, the bottom side fixed mounting of hollow board one 3 has two scrapers 31, all fixed mounting has scrapers 33 on two aeration pipes 32 that are close to the absorption tower 1 lateral wall, lower otter board 34 fixed mounting is on two scrapers 33, scraper 31 and scrapers 33 all contact with the inner wall of absorption tower 1, can control scraper 31 and scrapers 33 to clear up the inner wall of absorption tower 1 when hollow board one 3 rotates, water inlet and outlet pipe 11 fixed mounting is in the outside bottom of absorption tower 1, be convenient for to pour into the absorption liquid into in the absorption tower 1, also be convenient for simultaneously discharge absorption liquid and solid sundries in the absorption tower 1 after the use is accomplished.
In this embodiment, the filter plate is fixedly installed on the water inlet pipe of the water pump 41, so that the absorption liquid entering the water pump 41 can be filtered, and the influence of the suction of solid impurities on the normal operation of the spray header is avoided.
In this embodiment, a strip-shaped opening is formed in the absorption tower 1, and a glass strip is fixedly installed in the strip-shaped opening in a sealing manner, so that the liquid level of the absorption liquid in the absorption tower 1 can be conveniently observed.
Working principle: when the device is used, a power supply is firstly connected, a proper amount of absorption liquid is injected into the absorption tower 1 through the water inlet and outlet pipe 11, the liquid level of the absorption liquid floods the aeration pipe 32, flue gas of a heat conduction oil furnace for producing DMC is communicated with the air inlet pipe 21, then the flue gas is controlled to enter the hollow plate I3 along the conveying pipe 22 through the exhaust fan 2, the fan blade 302 can drive the hollow plate I3 to rotate through the fixing shaft 301 under the action of tail gas, so that the plurality of aeration pipes 32 can be driven to move along the hollow plate I3, the scraper blade 31 and the scraping strip 33 can be controlled to clean the inner wall of the absorption tower 1 while the hollow plate I3 rotates, the tail gas is dispersed into the absorption liquid through the inner cavity of the hollow plate I3, then the speed of the air bubble floating can be delayed under the action of the lower screen 34, the spray heads are controlled to operate under the action of the water pump 41 after the tail gas floats above the absorption liquid, the tail gas treatment effect can be improved, the tail gas is filtered again through the filter 15 after the spray and is discharged through the air outlet pipe 13 after the filtration.
The flue gas absorption tower of the heat conduction oil furnace for producing DMC provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, which are intended to be merely illustrative of the methods of the present utility model and their core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (7)
1. The flue gas absorption tower of the heat conduction oil furnace for producing DMC is characterized by comprising an absorption tower (1), a top cover (12), a water inlet and outlet pipe (11), an air outlet pipe (13), an air inlet component, a spraying component, an aeration component, a cleaning component, a filter body (15), an upper screen plate (14) and a lower screen plate (34);
top cap (12) are through bolt demountable installation at the top of absorption tower (1), outlet duct (13) fixed mounting is on top cap (12), filter body (15) demountable installation is in top cap (12), go up otter board (14) fixed mounting on the inner wall of absorption tower (1), and go up otter board (14) and filter body (15) and contact, spray subassembly and air inlet module all set up on absorption tower (1), the aeration module sets up in absorption tower (1), clean subassembly sets up on the aeration module, and lower otter board (34) set up on clean subassembly, business turn over water pipe (11) fixed mounting is in the outside bottom of absorption tower (1).
2. A flue gas absorber of a conduction oil furnace for DMC production according to claim 1, wherein: the air inlet assembly comprises an exhaust fan (2), an air inlet pipe (21) and a conveying pipe (22), the exhaust fan (2) is fixedly arranged on the outer side of the absorption tower (1), the air inlet pipe (21) is fixedly arranged at the air inlet of the exhaust fan (2), and the same conveying pipe (22) is fixedly arranged at the air outlet of the exhaust fan (2) and the bottom of the absorption tower (1).
3. A flue gas absorber of a conduction oil furnace for DMC production according to claim 2, wherein: the aeration assembly comprises a hollow plate I (3) and a plurality of aeration pipes (32), wherein the hollow plate I (3) is rotationally arranged on a conveying pipe (22), the conveying pipe (22) is communicated with the hollow plate I (3), the hollow plate is fixedly provided with the plurality of aeration pipes (32), the bottom ends of the plurality of aeration pipes (32) are communicated with the hollow plate I (3), the aeration pipes (32) are provided with the plurality of aeration holes, the top inner wall of the hollow plate I (3) is fixedly provided with a fixing shaft (301), and the bottom end of the fixing shaft (301) extends into the conveying pipe (22) and is fixedly sleeved with fan blades (302).
4. A flue gas absorber of a conduction oil furnace for DMC production according to claim 3, wherein: the cleaning assembly comprises two scraping plates (31) and two scraping strips (33), the two scraping plates (31) are fixedly arranged on the bottom side of the hollow slab I (3), the scraping strips (33) are fixedly arranged on the two aeration pipes (32) close to the side wall of the absorption tower (1), the lower screen plate (34) is fixedly arranged on the two scraping strips (33), and the scraping plates (31) and the scraping strips (33) are in contact with the inner wall of the absorption tower (1).
5. A flue gas absorber of a conduction oil furnace for DMC production according to claim 1, wherein: the spray assembly comprises a water pump (41), a hollow slab II (4) and a plurality of spray heads, wherein the hollow slab II (4) is fixedly installed on the side wall of the absorption tower (1), the spray heads are fixedly installed on the bottom side of the hollow slab II (4) and are communicated with the inner cavity of the hollow slab II (4), the water pump (41) is fixedly installed on the outer side of the absorption tower (1), the water outlet pipe of the water pump (41) is communicated with the hollow slab II (4), and the water inlet pipe of the water pump (41) extends into the absorption tower (1) and is located below the lower screen plate (34).
6. A flue gas absorber of a conduction oil furnace for DMC production according to claim 5, wherein: the water inlet pipe of the water pump (41) is fixedly provided with a filter plate.
7. A flue gas absorber of a conduction oil furnace for DMC production according to claim 1, wherein: the absorption tower (1) is provided with a strip-shaped opening, and a glass strip is fixedly arranged in the strip-shaped opening in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539258.XU CN220257618U (en) | 2023-06-16 | 2023-06-16 | Flue gas absorption tower of heat conduction oil furnace for producing DMC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539258.XU CN220257618U (en) | 2023-06-16 | 2023-06-16 | Flue gas absorption tower of heat conduction oil furnace for producing DMC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220257618U true CN220257618U (en) | 2023-12-29 |
Family
ID=89304523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321539258.XU Active CN220257618U (en) | 2023-06-16 | 2023-06-16 | Flue gas absorption tower of heat conduction oil furnace for producing DMC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220257618U (en) |
-
2023
- 2023-06-16 CN CN202321539258.XU patent/CN220257618U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203916433U (en) | A kind of gas cleaning plant | |
| CN207371301U (en) | A kind of spray column and the lacquer spraying waste gas processing unit with the spray column | |
| CN115040992A (en) | Tail gas treatment discharging equipment for carbon fiber production | |
| CN111001271A (en) | Small-size washing tower is used in lithium hexafluorophosphate production | |
| CN212575916U (en) | Energy-concerving and environment-protective flue gas purification discharging equipment | |
| CN111773921B (en) | Coking VOCS tail gas treatment device | |
| CN219290958U (en) | Exhaust treatment box with water purification function | |
| CN220257618U (en) | Flue gas absorption tower of heat conduction oil furnace for producing DMC | |
| CN210385320U (en) | Dust removal desulfurization purifying tower | |
| CN219290978U (en) | Waste gas recovery box for silicon carbide smelting | |
| CN209519517U (en) | A kind of fountain dust treatment device | |
| CN116099341A (en) | Wet desulfurization tower for graphitizing furnace flue gas | |
| CN210356500U (en) | Integrated energy-saving reconstruction and flue gas treatment flue gas and air device for industrial boiler | |
| CN218452013U (en) | RCO heat accumulating type catalytic combustion equipment for organic waste gas | |
| CN218583183U (en) | Organic waste gas staged catalytic combustion device | |
| CN218130775U (en) | A flue gas treatment facility for giving up burning admittedly | |
| CN213132627U (en) | Industrial waste gas handles with desulphurization unit who has two desulfurization mechanisms | |
| CN221267639U (en) | High-efficiency purifying absorption tower | |
| CN218249226U (en) | Flue gas purifying device | |
| CN216259954U (en) | Pollution-free water bores production exhaust purification processing apparatus in environmental protection | |
| CN221015347U (en) | Tail gas collecting device of silicon carbide smelting furnace | |
| CN219922487U (en) | Waste gas treatment equipment for chemical product production | |
| CN219976767U (en) | Boiler heat recovery device | |
| CN215138282U (en) | Dust collector for flue gas desulfurization | |
| CN213885492U (en) | Printing waste gas collecting and treating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |