CN219186307U - Novel spray washing tower - Google Patents
Novel spray washing tower Download PDFInfo
- Publication number
- CN219186307U CN219186307U CN202220679788.3U CN202220679788U CN219186307U CN 219186307 U CN219186307 U CN 219186307U CN 202220679788 U CN202220679788 U CN 202220679788U CN 219186307 U CN219186307 U CN 219186307U
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- spray
- washing tower
- tower body
- contrary
- annular
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- 239000007921 spray Substances 0.000 title claims abstract description 168
- 238000005406 washing Methods 0.000 title claims abstract description 59
- 238000005507 spraying Methods 0.000 claims abstract description 62
- 239000000779 smoke Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 230000018044 dehydration Effects 0.000 claims description 12
- 238000006297 dehydration reaction Methods 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 239000003546 flue gas Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 35
- 239000000428 dust Substances 0.000 abstract description 18
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model belongs to the technical field of environmental protection equipment treatment, and comprises a spray washing tower body and a controller, wherein a water-cooling jacket compensator is arranged at a joint opening of the spray washing tower body and a tail section flue, the inner diameter of the water-cooling jacket compensator is larger than that of the flue, an annular spray pipeline is arranged on a spray washing tower body shell and positioned below the water-cooling jacket compensator, an annular spray device is arranged on the annular spray pipeline in a circumferential array manner, the annular spray device comprises a spray water pipe, spray nozzles, a first electromagnetic valve and a spray water pipe, one end of the spray water pipe is communicated with the annular spray pipe, the other end of the spray water pipe penetrates through the spray washing tower body shell and is communicated with the spray water pipe, a first electromagnetic valve is arranged at a joint of the spray water pipe and the spray water pipe, and a plurality of spray nozzles are arranged on the spray water pipe. The utility model cools the high-temperature smoke dust through the annular spraying device so as to protect the safe use of the smoke dust inlet of the spray washing tower body.
Description
Technical Field
The utility model relates to the field of environmental protection equipment treatment, in particular to a novel spray washing tower.
Background
(1) The emission standard GB 28664-2012 of the atmospheric pollutants in the steelmaking industry prescribes that the primary dust removal emission concentration of the converter is less than 50mg/m < 3 >.
(2) According to the latest issued environmental protection agency document ring issue [2014]55, the primary dust removal system is required to be modified into an LT dry method or a novel OG method (a fifth generation tower Wen Shifa dust removal double tower system of my company).
(3) The national environmental protection department of 2018 issued the requirements of the ultra-low emission modification work scheme (request opinion draft) (ring air letter [2018] 242): the primary flue gas emission index of the converter is lower than 10mg/m < 3 >.
(4) The five committee at the end of 4 months in 2019 issues opinion about the promotion of ultra-low emission in the steel industry (the average emission concentration of various particulate matters in the steel industry is lower than 10mg/m < 3 >) to make a time schedule for ultra-low emission, and all areas are grasping practice. The converter is increasingly urgent for achieving the ultra-low emission requirement by one-time dust removal.
The existing scrubbing tower technology adopts a nitrogen atomization mode, influences the quality of coal gas recovery, causes energy waste, is simple in lower spraying mode, is low in dust trapping efficiency, needs a reserved position in a newly-built factory building, is difficult to meet the arrangement position of equipment for a transformation project, needs to be matched and adjusted with the original production technology, can meet the normal operation of the equipment, has the advantages that the water content in an evaporative cooler is large, scaling in the equipment is easy to cause, the water content is small, the temperature of smoke dust is reduced, and the influence on the original production technology is large.
Disclosure of Invention
The utility model aims to provide a novel spray washing tower so as to solve the problems in the prior art.
The technical scheme of the utility model is as follows: the utility model provides a novel spray scrubber, includes spray scrubber body and controller, spray scrubber body and last section flue's butt joint mouth department is equipped with the water-cooling jacket compensator, and the water-cooling jacket compensator internal diameter is greater than flue internal diameter spray scrubber body shell is last and be located the below that the water-cooling jacketed compensator is equipped with annular spray pipe, the circumference array has annular spray set on the annular spray pipe, annular spray set is including spraying raceway, spray shower nozzle, first solenoid valve and spray shower pipe, spray raceway one end with annular spray shower pipe is linked together, and the other end runs through spray scrubber body shell with spray shower pipe is linked together, spray raceway with spray shower pipe's junction is equipped with first solenoid valve, be equipped with a plurality of spray shower nozzle on the spray shower pipe, first solenoid valve with controller electric connection.
Further, the lower part of the annular spraying device is provided with a multistage reverse spraying device, the multistage reverse spraying device comprises a plurality of layers of reverse spraying structures which are distributed in a geometric staggered mode, an annular reverse spraying pipeline is arranged on the outer shell of the spraying washing tower body, a circumferential array on the annular reverse spraying pipeline is provided with a reverse spraying structure, the reverse spraying structure comprises a reverse spraying water pipe, a reverse spraying nozzle, a second electromagnetic valve and a reverse spraying pipe, one end of the reverse spraying water pipe is communicated with the annular reverse spraying pipeline, the other end of the reverse spraying water pipe penetrates through the outer shell of the spraying washing tower body and is communicated with the reverse spraying pipe, the second electromagnetic valve is arranged at the joint of the reverse spraying water pipe and the reverse spraying pipe and is communicated with the reverse spraying nozzle, a plurality of liquid outlets are formed in the reverse spraying nozzle, and the liquid outlet direction of the reverse spraying nozzle is upward along the vertical direction, and the second electromagnetic valve is electrically connected with the controller.
Further, a speed-reducing dehydration device is arranged in the spray washing tower body and below the multi-stage reverse spray device, the speed-reducing dehydration device comprises a plurality of baffle plates, the baffle plates are obliquely and alternately arranged on the inner walls of the two sides of the spray washing tower body, and the inclination angles of the baffle plates are 15-25 degrees; the baffle plates at the two sides are provided with a superposition area with the horizontal width of 200mm-400mm at the center of the spray washing tower body.
Further, the interface of the spray washing tower body and the last section flue is a smoke inlet, a sewage outlet is arranged at the bottom end of the spray washing tower body, a smoke outlet is arranged between the sewage outlet and the speed reduction dehydration device, and the smoke outlet is positioned below the lowermost baffle plate in the speed reduction dehydration device.
Furthermore, the smoke inlet and the smoke outlet of the spray washing tower body are provided with a pressure sensor and a temperature sensor, and the pressure sensor and the temperature sensor are electrically connected with the controller.
Further, the lower end of the spray washing tower body is provided with a plurality of support columns.
The utility model provides a novel spray washing tower through improvement, and compared with the prior art, the novel spray washing tower has the following improvement and advantages:
the method comprises the following steps: the utility model adopts the annular spraying device to directly penetrate the high-temperature flue gas layer, mixes and coagulates, and performs heat exchange so as to achieve the purpose of rapid cooling, thereby protecting the safe use of the equipment inlet.
And two,: the utility model adopts the multistage reverse spraying device to remove dust, the spray heads of two adjacent layers are staggered, and the water mist sprayed by the spray heads are overlapped with each other without leaving gaps, so that the sprayed liquid drops completely cover the whole section of the spray washing tower, thereby improving the dust removal efficiency of the spray washing tower.
And thirdly,: the utility model monitors the pressure and the temperature in the spray washing tower body through the pressure sensor and the temperature sensor, transmits an electric signal to the controller, and the controller adjusts the output water quantity of the annular spray device and the multistage reverse spray device by controlling the first electromagnetic valve and the second electromagnetic valve, so that the scaling in the spray washing tower body is reduced simultaneously under the condition of fully cooling.
Drawings
The utility model is further explained below with reference to the drawings and examples:
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic plan view of the present utility model;
FIG. 3 is a schematic view of the structure of the annular spraying device of the present utility model;
fig. 4 is a schematic structural view of the reverse spraying structure of the present utility model.
Reference numerals illustrate:
1. a spray scrubber body; 2. a water-cooled jacket compensator; 3. an annular spray pipe; 4. an annular spraying device; 5. spraying the water delivery pipe; 6. spraying nozzle; 7. a first electromagnetic valve; 8. a spray water pipe; 9. a reverse spraying structure; 10. an annular reverse spraying pipeline; 11. a water delivery pipe is sprayed reversely; 12. a reverse spray nozzle; 13. a second electromagnetic valve; 14. a reverse spraying water pipe; 15. a liquid outlet; 16. a speed-reducing dehydration device; 17. a baffle plate; 18. a smoke inlet; 19. a smoke outlet; 20. a sewage outlet; 21. a pressure sensor; 22. a support column; 23. a temperature sensor; 24. a multistage reverse spraying device.
Detailed Description
The following detailed description of the present utility model will provide clear and complete description of the technical solutions of the embodiments of the present utility model, with reference to fig. 1 to 4, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. 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 be within the scope of the utility model.
The utility model provides a novel spray washing tower through improvement, as shown in figures 1-4, the novel spray washing tower comprises a spray washing tower body 1 and a controller, a water-cooling jacket compensator 2 is arranged at a joint opening of the spray washing tower body 1 and a tail section flue, the inner diameter of the water-cooling jacket compensator 2 is larger than that of the flue, an annular spray pipeline 3 is arranged on a shell of the spray washing tower body 1 and below the water-cooling jacket compensator 2, annular spray devices 4 are circumferentially arranged on the annular spray pipeline 3, the annular spray devices 4 comprise a spray water pipe 5, spray nozzles 6, a first electromagnetic valve 7 and spray water pipes 8, one end of the spray water pipe 5 is communicated with the annular spray pipes, the other end of the spray water pipe 5 penetrates through the shell of the spray washing tower body 1 and is communicated with the spray water pipes 8, a first electromagnetic valve 7 is arranged at a joint of the spray water pipe 5 and the spray water pipes 8, a plurality of spray nozzles 6 are arranged on the spray pipes 8, and the annular spray devices 4 are electrically connected with the controller. The water-cooling jacket compensator 2 is made of Q245R high-temperature-resistant and scouring-resistant materials, so that scouring of high-temperature smoke is prevented, and the smoke inlet 18 is cooled by the annular spraying device 4, so that safe use of the smoke inlet 18 of the spray washing tower body 1 is protected.
Specifically, the lower part of the annular spraying device 4 is provided with a multistage reverse spraying device 24, the multistage reverse spraying device 24 comprises a plurality of layers of reverse spraying structures 9 which are distributed in a geometric staggered manner, the outer shell of the spray washing tower body 1 is provided with an annular reverse spraying pipeline 10, the annular reverse spraying pipeline 10 is provided with a circumferential array of reverse spraying structures 9, the reverse spraying structures 9 comprise a reverse spraying water pipe 11, a reverse spraying nozzle 12, a second electromagnetic valve 13 and a reverse spraying pipe 14, one end of the reverse spraying water pipe 11 is communicated with the annular reverse spraying pipeline 10, the other end penetrates through the outer shell of the spray washing tower body 1 and is communicated with the reverse spraying pipe 14, the joint of the reverse spraying water pipe 11 and the reverse spraying pipe 14 is provided with the second electromagnetic valve 13, the reverse spraying pipe 14 is communicated with the reverse spraying nozzle 12, the reverse spraying nozzle 10 is provided with a plurality of liquid outlets 15, the liquid outlet direction of the reverse spraying nozzle 12 is upward along the vertical direction, and the multistage reverse spraying device 24 is electrically connected with the controller. By using the multistage reverse spraying device 24, the spray heads of two adjacent layers are staggered, and the water mist sprayed by the spray heads are overlapped with each other without leaving gaps, so that sprayed liquid drops completely cover the whole section of the spray washing tower, and the dust removal efficiency of the spray washing tower is improved.
Specifically, a speed-reducing dehydration device 16 is arranged inside the spray washing tower body 1 and below the multi-stage reverse spraying device 24, the speed-reducing dehydration device 16 comprises a plurality of baffle plates 17, the baffle plates 17 are obliquely and alternately arranged on the inner walls of the two sides of the spray washing tower body 1, and the inclination angle of the baffle plates 17 is 15-25 degrees; the baffle plates 17 on the two sides are provided with a superposition area with the horizontal width of 200mm-400mm at the center of the spray washing tower body 1. The speed of the smoke dust is reduced by the baffle plate 17, and the gravity and redirection are used for separating gas from liquid, so that the smoke dust is reduced from being carried out by sewage.
Specifically, the interface department of spray scrubber body 1 and last section flue is smoke and dust entry 18, the bottom of spray scrubber body 1 is equipped with sewage outlet 20, sewage outlet 20 with be equipped with smoke and dust export 19 between the dewatering device 16 that slows down, smoke and dust export 19 is located the below of Fang Sheliu board 17 that slows down in the dewatering device 16.
Specifically, the positions of the smoke inlet 18 and the smoke outlet 19 of the spray washing tower body 1 are provided with a pressure sensor 21 and a temperature sensor 23, and the pressure sensor 21 and the temperature sensor 23 are electrically connected with the controller. The pressure sensor 21 and the temperature sensor 23 are used for monitoring the pressure and the temperature in the spray washing tower body 1, transmitting an electric signal to the controller, and the controller is used for controlling the first electromagnetic valve 7 and the second electromagnetic valve 13 to adjust the output water quantity of the annular spray device 4 and the multistage reverse spray device 24, so that the scaling condition in the spray washing tower body 1 is reduced simultaneously under the condition of fully cooling.
Specifically, the lower end of the spray washing tower body 1 is provided with a plurality of support columns 22.
Working principle: firstly, the smoke inlet 18 of the spray washing tower body 1 is in butt joint with a tail flue, a water-cooling jacket compensator 2 is arranged, high-temperature smoke enters from the smoke inlet 18, a water source enters an annular spray device 4 through an annular spray pipeline 3, is sprayed out from a spray nozzle, directly penetrates through a high-temperature smoke layer, is mixed and condensed, carries out heat exchange so as to achieve the aim of quickly cooling, thereby reducing the high-temperature smoke below 80 ℃, protecting the safe use of an inlet of equipment, then when the smoke enters the position of a multistage reverse spray device 24, the water source enters the reverse spray device through an annular reverse spray pipeline 10, the multistage reverse spray device 24 is accelerated to impact the cooled large-particle smoke, a plurality of turbulent flow states are caused, the condensation is carried out, extremely fine particles become hydrophilic particles, the size is increased from small, and the aim of coarse dust removal is achieved, then the flue gas and the vapor pass through the speed-reducing dehydration device 16, under the action of the baffle 17, the gas-liquid separation is carried out by gravity and redirection, the effect of flue gas cleaning and sewage is reduced, the effect of flue gas fine purification is affected, finally, the flue gas after dust removal is discharged through the flue gas inlet 18, the sewage is discharged from the sewage outlet 20, the pressure sensor 21 and the temperature sensor 23 at the flue gas inlet 18 and the flue gas outlet 19 of the spray washing tower body 1 monitor the inside of the spray washing tower body 1 in the running process of the device, the electric property number is transmitted to the controller, and the controller adjusts the output water quantity of the annular spray device 4 and the multistage reverse spray device 24 by controlling the first electromagnetic valve 7 and the second electromagnetic valve 13, so that the equipment is ensured not to be burnt or to be blocked. The model of the controller is C8051F020 singlechip, the model of the temperature sensor is AM2305, and the model of the pressure sensor is LLBLS-I.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a novel spray scrubber which characterized in that: including spray washing tower body (1) and controller, the butt joint mouth department of spray washing tower body (1) and last section flue is equipped with water-cooling jacket compensator (2), and water-cooling jacket compensator (2) internal diameter is big than flue internal diameter spray washing tower body (1) shell is last and be located the below of water-cooling jacket compensator (2) and be equipped with annular spray pipe (3), circumference array has annular spray set (4) on annular spray pipe (3), annular spray set (4) including spray raceway (5), spray shower nozzle (6), first solenoid valve (7) and spray shower pipe (8), the one end of spray raceway (5) with annular spray pipe is linked together, and the other end runs through spray washing tower body (1) shell with spray shower pipe (8) are linked together, spray raceway (5) with the junction of spray shower pipe (8) is equipped with first solenoid valve (7), be equipped with a plurality of shower nozzle (6) on spray shower pipe (8), first solenoid valve (7) with controller electric connection.
2. A novel spray scrubber as recited in claim 1, wherein: the utility model provides a spray washing tower, including annular spray device (4) below is equipped with multistage contrary spray device (24), multistage contrary spray device (24) are including the multilayer be the contrary structure (9) that spouts of geometric stagger distribution, be equipped with annular contrary spray pipe (10) on spray washing tower body (1) shell, circular array has contrary spray structure (9) on annular contrary spray pipe (10), contrary spray structure (9) are including contrary spray raceway (11), contrary spray head (12), second solenoid valve (13) and contrary spray pipe (14), the one end of contrary spray raceway (11) with annular contrary spray pipe (10) are linked together, and the other end runs through spray washing tower body (1) shell with contrary spray pipe (14) are linked together, contrary spray raceway (11) with contrary junction of spraying pipe (14) is equipped with second solenoid valve (13), contrary spray pipe (14) with contrary spray head (12) are linked together, contrary be equipped with a plurality of liquid outlet (15) on the spray head, the contrary direction of spraying (12) is followed vertical direction of spray pipe (13) and is electric connection.
3. A novel spray scrubber as recited in claim 2, wherein: the device is characterized in that a speed-reducing dehydration device (16) is arranged inside the spray washing tower body (1) and below the multi-stage reverse spray device (24), the speed-reducing dehydration device (16) comprises a plurality of baffle plates (17), the baffle plates (17) are obliquely staggered on the inner walls of the two sides of the spray washing tower body (1), and the inclination angle of the baffle plates (17) is 15-25 degrees; the baffle plates (17) at the two sides are provided with a section of overlapping area with the horizontal width of 200mm-400mm at the center of the spray washing tower body (1).
4. A novel spray scrubber as recited in claim 3, wherein: the flue gas filter is characterized in that a smoke inlet (18) is formed at the joint of the spray washing tower body (1) and the tail section flue, a sewage outlet (20) is formed in the bottom end of the spray washing tower body (1), a smoke outlet (19) is formed between the sewage outlet (20) and the speed-reducing dehydration device (16), and the smoke outlet (19) is located below a lowest Fang Sheliu plate (17) in the speed-reducing dehydration device (16).
5. The novel spray scrubber as recited in claim 4, wherein: the device is characterized in that a smoke inlet (18) and a smoke outlet (19) of the spray washing tower body (1) are respectively provided with a pressure sensor (21) and a temperature sensor (23), and the pressure sensor (21) and the temperature sensor (23) are electrically connected with the controller.
6. A novel spray scrubber as recited in claim 1, wherein: the lower end of the spray washing tower body (1) is provided with a plurality of support columns (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679788.3U CN219186307U (en) | 2022-03-25 | 2022-03-25 | Novel spray washing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679788.3U CN219186307U (en) | 2022-03-25 | 2022-03-25 | Novel spray washing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219186307U true CN219186307U (en) | 2023-06-16 |
Family
ID=86727105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220679788.3U Active CN219186307U (en) | 2022-03-25 | 2022-03-25 | Novel spray washing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219186307U (en) |
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2022
- 2022-03-25 CN CN202220679788.3U patent/CN219186307U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20241023 Address after: 705, 7th Floor, Building 6, Pingyang Jingyuan, No. 65 Pingyang Road, Xiaodian District, Taiyuan City, Shanxi Province 030000 Patentee after: Shanxi Xinruiya Construction Engineering Co.,Ltd. Country or region after: China Patentee after: Liu Le Address before: 030000 household B, 11th floor, Changfeng building, No. 132, Changfeng street, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: Shanxi Hongxin Haojing Environmental Protection Technology Co.,Ltd. Country or region before: China Patentee before: Liu Le |