CN110841426A - Waste gas desulfurization and denitration treatment device - Google Patents
Waste gas desulfurization and denitration treatment device Download PDFInfo
- Publication number
- CN110841426A CN110841426A CN201911331656.0A CN201911331656A CN110841426A CN 110841426 A CN110841426 A CN 110841426A CN 201911331656 A CN201911331656 A CN 201911331656A CN 110841426 A CN110841426 A CN 110841426A
- Authority
- CN
- China
- Prior art keywords
- disc
- desulfurization
- rod
- liquid
- absorption liquid
- 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.)
- Granted
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 58
- 230000023556 desulfurization Effects 0.000 title claims abstract description 58
- 239000002912 waste gas Substances 0.000 title claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 182
- 238000010521 absorption reaction Methods 0.000 claims abstract description 101
- 239000007789 gas Substances 0.000 claims abstract description 56
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 37
- 238000001802 infusion Methods 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 27
- 230000001502 supplementing effect Effects 0.000 claims description 16
- 239000002699 waste material Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 20
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002637 fluid replacement therapy Methods 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas desulfurization and denitrification treatment device which comprises an air inlet pipe, a dust removal device, an air inlet fan, an oxidation device, a desulfurization and denitrification tank, a driving device, a tail gas discharge pipe and an absorption liquid supply device, wherein the dust removal device, the air inlet fan and the oxidation device are sequentially arranged on the air inlet pipe along the airflow direction, the desulfurization and denitrification tank is connected with the air inlet pipe, the driving device is connected with the desulfurization and denitrification tank through a first gas transmission pipeline, and the tail gas discharge pipe is connected with the driving device. The waste gas desulfurization and denitration treatment device provided by the invention has the advantages that the waste gas is dedusted and oxidized, then is introduced into the desulfurization and denitration tank, is subjected to desulfurization and denitration treatment by using the absorption liquid, and finally is discharged through the tail gas discharge pipe, so that the effective desulfurization and denitration can be carried out, and the finally discharged tail gas can meet the requirements of discharge indexes; the invention utilizes the power of gas exhausted from the tank body to drive the driving impeller to rotate so as to drive the disc to rotate, and the self-exhaust is used as a power source, so that a driving motor is reduced, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to a waste gas desulfurization and denitrification treatment device.
Background
At present, the rapid development of industrialization inevitably produces a large amount of industrial waste gas, which not only affects the normal production of the plant, but also causes serious environmental pollution, so, for exampleWhat is effective in reducing the pollution caused by industrial waste gas is the problem which needs to be solved urgently at present. Such as coking plants, thermal power plants, etc., produce large amounts of SO2、SO3、NOXPollutants are a great air pollution source and can be discharged only through desulfurization and denitrification treatment. In the existing desulfurization and denitrification treatment process, the wet process which adopts absorption liquid to react with waste gas to perform desulfurization and denitrification is generally applied, wherein the adopted absorption liquid needs to have a removal effect on sulfur and nitrate, so that desulfurization and denitrification can be performed simultaneously.
When the absorption liquid is reacted with the exhaust gas to perform desulfurization and denitrification, one of the important factors of the desulfurization and denitrification effect is whether the exhaust gas is sufficiently contacted with the absorption liquid. The conventional method is to adopt a treatment tower to realize the contact reaction of the waste gas and the absorption liquid by a countercurrent contact mode of the waste gas flowing upwards and the absorption liquid flowing downwards. The contact effect of the waste gas and the absorption liquid mainly depends on whether the waste gas flows upwards, whether the absorption liquid flows downwards uniformly, whether the amount of the absorption liquid flowing downwards is enough, and the like. Therefore, a large amount of absorption liquid is required to be sprayed downwards continuously, so that the problems that the waste of the absorption liquid is large or the contact between the waste gas and the absorption liquid is still insufficient, the desulfurization and denitrification effects are affected and the like easily exist in a conventional mode. Therefore, a more reliable desulfurization and denitrification scheme is needed.
Disclosure of Invention
The present invention is directed to provide a device for desulfurization and denitration treatment of exhaust gas, which overcomes the above-mentioned shortcomings in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: a waste gas desulfurization and denitrification treatment device comprises an air inlet pipe, a dust removal device, an air inlet fan and an oxidation device which are sequentially arranged on the air inlet pipe along the airflow direction, a desulfurization and denitrification tank connected with the air inlet pipe, a driving device connected with the desulfurization and denitrification tank through a first gas transmission pipeline, a tail gas discharge pipe connected with the driving device and an absorption liquid supply device;
the desulfurization and denitrification tank comprises a tank body, a rotating shaft and at least one disc, wherein the rotating shaft is rotatably arranged in the tank body along the horizontal direction, the disc is fixedly connected to the rotating shaft, absorption liquid is contained in the tank body, and one part of the disc is immersed in the absorption liquid;
the driving device comprises a box body and a driving impeller which is rotatably arranged in the box body and connected with the rotating shaft, wherein a first air outlet of the tank body is communicated with a second air inlet of the box body through a first air transmission pipeline, so that the driving impeller is driven to rotate through gas exhausted from the tank body, and the disc coaxial with the driving impeller is driven to rotate.
Preferably, the tank body is cylindrical, and the central axis of the tank body is superposed with the axis of the rotating shaft; the peripheral lateral wall of the jar body is outwards protruding, forms quantity with the annular that the disc is the same holds the chamber, the rotatable setting of disc is in the annular holds the intracavity.
Preferably, the disc comprises a disc body, disc-shaped support nets arranged on two side surfaces of the disc body, and a shaft hole formed in the middle of the disc body and used for the rotating shaft to pass through;
the diameters of the two disc-shaped supporting nets are larger than that of the disc body, an annular groove is formed between the periphery of the two disc-shaped supporting nets and the peripheral side wall of the disc body, a plurality of ejector rods fixedly connected with the peripheral side wall of the disc body are arranged in the annular groove in an annular array mode, and the outer ends of the ejector rods extend out of the annular groove; the disc body is internally provided with a porous structure.
Preferably, the outer end of the ejector pin has an arc-shaped guide surface.
Preferably, a fixing threaded hole for inserting the ejector rod is formed in the inner wall of the bottom of the annular groove, a threaded portion matched with the fixing threaded hole is formed in the inner end of the ejector rod, and a convex column is arranged in the middle of the ejector rod.
Preferably, the ejector pin is a telescopic rod, and it includes with thick pole of the bottom inner wall rigid coupling of ring channel, set up in jack in the thick pole, scalable the inserting establish thin pole in the jack, by what the lateral wall of thick pole inwards seted up link up to the locking screw hole of jack and insert and establish locking double-screw bolt in the locking screw hole, locking double-screw bolt be used for with the inner that thin pole top pasted is the arc form, the setting of arc guide face is in the upper end of thin pole.
Preferably, the absorption liquid replenishing device comprises a first liquid replenishing device and a second liquid replenishing device, wherein the first liquid replenishing device comprises a first liquid storage tank for storing absorption liquid, an automatic liquid replenishing box connected with the first liquid storage tank through a first liquid replenishing pipeline and an automatic liquid discharging mechanism arranged in the automatic liquid replenishing box.
Preferably, the automatic liquid replenishing box is fixedly connected with the outer wall of the annular accommodating cavity, and a bottom plate of the automatic liquid replenishing box is provided with a liquid replenishing hole communicated with the annular accommodating cavity;
the automatic liquid discharging mechanism comprises a loop bar fixedly connected with a top plate of the automatic liquid replenishing box, an inner rod telescopically inserted in the loop bar from bottom to top, a sealing ball fixedly connected at the bottom end of the inner rod and a pressure spring sleeved on the periphery of the inner rod and clamped between the loop bar and the sealing ball;
the diameter of the sealing ball is larger than the diameters of the inner rod and the liquid supplementing hole; when no external force is applied, the lower end of the sealing ball is pressed against the fluid infusion hole, so that the fluid infusion hole is sealed.
Preferably, the second fluid infusion device comprises a second fluid reservoir communicated with a fluid inlet formed in the tank body through a second fluid infusion pipeline and a fluid infusion pump arranged on the second fluid infusion pipeline.
Preferably, the box body is further provided with a second air outlet, and the second air outlet is communicated with the tail gas discharge pipe through a second gas transmission pipeline;
the tank body is also provided with a waste liquid discharge port, and the waste liquid discharge port is connected with a waste liquid storage tank through a pipeline.
The invention has the beneficial effects that:
the waste gas desulfurization and denitration treatment device provided by the invention has the advantages that the waste gas is dedusted and oxidized, then is introduced into the desulfurization and denitration tank, is subjected to desulfurization and denitration treatment by using the absorption liquid, and finally is discharged through the tail gas discharge pipe, so that the effective desulfurization and denitration can be carried out, and the finally discharged tail gas can meet the requirements of discharge indexes;
according to the device for desulfurization and denitrification of the waste gas, the disc rotates, the porous structure of the disc is continuously immersed into the absorption liquid, new absorption liquid is supplemented for the disc, and when the waste gas penetrates through the disc, the waste gas is fully reacted with the absorption liquid in the disc, so that the contact effect of the waste gas and the absorption liquid can be improved, and the desulfurization and denitrification effect is improved;
the invention utilizes the power of gas exhausted from the tank body to drive the driving impeller to rotate, thereby driving the disc to rotate, and the self exhaust is used as a power source, thereby reducing a driving motor and reducing the energy consumption;
according to the invention, the automatic liquid discharging mechanism is arranged, and the rotation of the disc is utilized, so that the absorption liquid contained in the automatic liquid supplementing box can automatically flow out at intervals and enter the tank body, the absorption liquid flowing out of the automatic liquid supplementing box drops into the annular groove, enters the disc and then flows downwards along the inside of the disc, the disc can be filled with the absorption liquid all the time, the absorption liquid can be supplemented to the disc from the upper part continuously, the waste gas is fully contacted with the absorption liquid, and the desulfurization and denitrification effects can be further improved.
Drawings
FIG. 1 is a schematic structural view of an apparatus for desulfurization and denitrification of exhaust gas according to the present invention;
FIG. 2 is a front view of a can body of the present invention;
FIG. 3 is a side view of a can body of the present invention;
FIG. 4 is a cross-sectional view in the radial direction of the disk of the present invention;
FIG. 5 is a schematic cross-sectional view of the disk of the present invention in an axial direction;
FIG. 6 is a schematic structural view of the liquid replenishing hole opened by the cooperation of the push rod and the automatic liquid discharging mechanism;
FIG. 7 is a partially enlarged schematic view of the ejector pin and the automatic tapping mechanism of the present invention;
FIG. 8 is a schematic structural view of the ejector rod and the automatic tapping mechanism in cooperation when the fluid infusion hole is sealed;
FIG. 9 is a schematic structural diagram of a driving device according to the present invention;
FIG. 10 is a schematic structural view of a stem lifter in another embodiment of the present invention;
fig. 11 is a schematic structural diagram of a jack in another embodiment of the present invention.
Description of reference numerals:
1, an air inlet pipe; 10-a dust removal device; 11-an air inlet fan; 12-an oxidation unit;
2-a desulfurization and denitrification tank; 20 — a first air inlet; 21 — a first air outlet; 22-a rotating shaft; 23-a disc; 24-an annular containment chamber; 25-liquid inlet; 26-a waste liquid discharge port; 27-a waste liquid storage tank; 28-a first gas transmission pipeline; 29-a tank body; 230-a disc body; 231-disc-shaped support net; 232-axle hole; 233-ring groove; 234-mandril; 235-an arc-shaped guide surface; 2340 — screw section; 2341-convex column; 2342-thick rod; 2343 — inserting holes; 2344-thin rod; 2345-locking the threaded hole; 2346-locking the stud;
3-a driving device; 30-driving the impeller; 31 — a second inlet; 32-a second air outlet; 33-a second gas transmission pipeline; 34, a box body;
4-absorption liquid supply device; 40-a first fluid infusion device; 41-a first reservoir; 42-a first fluid infusion pipeline; 43-a mounting frame; 44-a second fluid infusion device; 45-a second fluid infusion pipeline; 46 — a second reservoir; 47-fluid replacement pump;
5, an automatic liquid replenishing box; 50-automatic tapping mechanism; 51-a base plate; 52-a top plate; 53-fluid infusion hole; 500-loop bar; 501, an inner rod; 502-sealing ball; 503-pressure spring;
6-tail gas discharge pipe.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 9, the desulfurization and denitrification treatment device for waste gas of the present embodiment includes an air inlet pipe 1, a dust removing device 10, an air inlet fan 11 and an oxidizing device 12 sequentially arranged on the air inlet pipe 1 along an air flow direction, a desulfurization and denitrification tank 2 connected to the air inlet pipe 1, a driving device 3 connected to the desulfurization and denitrification tank 2 through a first air pipeline 28, a tail gas discharge pipe 6 connected to the driving device 3, and an absorbent replenishment device 4;
the desulfurization and denitrification tank 2 comprises a tank body 29, a rotating shaft 22 which is rotatably arranged in the tank body 29 along the horizontal direction and at least one disc 23 which is fixedly connected on the rotating shaft 22, wherein the tank body 29 is filled with absorption liquid, and one part of the disc 23 is immersed in the absorption liquid; the tank 29 is provided with a first air inlet 20 and a first air outlet 21;
the driving device 3 comprises a box 34 and a driving impeller 30 which is rotatably arranged in the box 34 and connected with the rotating shaft 22, a second air inlet 31 and a second air outlet 32 are arranged on the box 34, the first air outlet 21 of the tank 29 is communicated with the second air inlet 31 of the box 34 through a first air conveying pipeline 28, so that the gas exhausted from the tank 29 drives the driving impeller 30 to rotate, and the disc 23 coaxial with the driving impeller 30 is driven to rotate.
The second air outlet 32 is communicated with the tail gas discharge pipe 6 through a second gas transmission pipeline 33;
the tank 29 is further provided with a waste liquid discharge port 26, and the waste liquid discharge port 26 is connected with a waste liquid storage tank 27 through a pipeline.
The waste gas desulfurization and denitration treatment device is arranged at the exhaust end of a waste gas exhaust system, is used for performing desulfurization and denitration treatment on waste gas and then exhausting the waste gas, and is mainly used for performing desulfurization and denitration treatment on factory waste gas, thermal power plant waste gas and the like. The invention carries out desulfurization and denitrification by reacting the absorption liquid with the waste gas so as to ensure that the discharged gas meets the emission standard. Wherein the absorption liquid is selected from conventional products, and the absorption liquid capable of simultaneously desulfurizing and denitrating is selected, such as calcium hydroxide slurry, NaClO2NaClO composite absorption liquid or other conventional absorption liquid capable of simultaneously desulfurizing and denitrating.
In the present invention, the disc 23 itself is a porous structure that is permeable to air, and exhaust gas can pass through the disc 23. Utilize the power of the gaseous drive impeller 30 of jar body 29 exhaust to rotate to drive disc 23 and rotate, when disc 23 rotated, the incessant absorption liquid that immerses in disc 23 bottom supplyed new absorption liquid for disc 23, when waste gas sees through disc 23, fully reacted with the inside absorption liquid of disc 23, realized SOx/NOx control. Exhaust through self is as the power supply, has reduced a driving motor, has reduced the energy consumption, and incessantly rotation through disc 23 has improved SOx/NOx control's effect again simultaneously.
The waste gas enters the tank 29 after being sequentially subjected to dust removal by the dust remover and oxidation treatment by the oxidation device 12 under the action of the air inlet fan 11, sequentially passes through the plurality of discs 23 from left to right, is subjected to desulfurization and denitrification through reaction with the absorption liquid, and then enters the box 34 to drive the driving impeller 30 to rotate; the gas exhausted from the box 34 enters the tail gas exhaust pipe 6 again for high-altitude exhaust. Wherein, the dust remover is used for removing the particulate matter in the waste gas, does benefit to subsequent processing, can select conventional bag collector. The oxidation device 12 oxidizes NO in the exhaust gas into NO by a strong oxidant (such as ozone or hydrogen peroxide)2To remove NO in the subsequent desulfurization and denitrification tank 22And the subsequent denitration effect can be improved. The oxidation device 12 may be selected from conventional devices, and the ozone oxidation device 12 is selected in this embodiment.
Specifically, in the present embodiment, referring to fig. 1 to 9, the tank 29 has a cylindrical shape, and the central axis thereof coincides with the axis of the rotating shaft 22; the peripheral side wall of the tank 29 is outwardly projected to form annular accommodation chambers 24 the same number as the number of the disks 23, and the disks 23 are rotatably disposed in the annular accommodation chambers 24. The number of the disks 23 and the annular accommodating chambers 24 is 3 in this embodiment.
The disc 23 includes a disc body 230, disc-shaped support nets 231 disposed on both side surfaces of the disc body 230, and a shaft hole 232 opened in the middle of the disc body 230 for the shaft 22 to pass through; the rotating shaft 22 is rotatably connected with the tank 29 and the box 34, and the disc 23 and the driving impeller 30 are fixedly connected on the rotating shaft 22. The disc-shaped support net 231 can enhance the mechanical strength of the disc body 230, allowing the exhaust gas to pass therethrough. Can be made of corrosion-resistant metal or hard plastic.
The diameters of the two disc-shaped supporting nets 231 are larger than that of the disc body 230, a ring-shaped groove 233 is formed between the outer peripheries of the two disc-shaped supporting nets 231 and the outer peripheral side wall of the disc body 230, a plurality of top rods 234 fixedly connected with the outer peripheral side wall of the disc body 230 are arranged in the ring-shaped groove 233 in a ring-shaped array, and the outer ends of the top rods 234 extend out of the ring-shaped groove 233. The diameter of the two disk-shaped supporting nets 231 is smaller than the outer diameter of the annular accommodating cavity 24 and larger than the inner diameter of the tank 29, so that the amount of exhaust gas which does not pass through the disk 23 but directly flows through the gap between the disk 23 and the tank 29 can be greatly reduced; while also ensuring that the disc 23 is free to rotate within the annular housing 24. The disc body 230 has a porous structure inside, so that the exhaust gas can pass through the disc body 230, and the disc body 230 has a good absorption effect on the absorption liquid, so that the disc body 230 can be filled with the absorption liquid. In this embodiment, the disc body 230 is made of carbon fiber, and has densely distributed micropores inside, so that exhaust gas can pass through the disc-shaped support net 231 and the disc body 230.
Further, the outer end of the ejector pin 234 has an arc-shaped guide surface 235.
The absorption liquid replenishing device 4 comprises a first liquid replenishing device 40 and a second liquid replenishing device 44, wherein the first liquid replenishing device 40 comprises a first liquid storage tank 41 for storing absorption liquid, an automatic liquid replenishing box 5 connected with the first liquid storage tank 41 through a first liquid replenishing pipeline 42, and an automatic liquid discharging mechanism 50 arranged in the automatic liquid replenishing box 5. The first reservoir 41 is secured to the tank 29 by a mounting bracket 43.
The automatic liquid supplementing box 5 is fixedly connected with the outer wall of the annular accommodating cavity 24, and absorption liquid is contained in the automatic liquid supplementing box 5. A bottom plate 51 of the automatic liquid supplementing box 5 is provided with a liquid supplementing hole 53 communicated with the annular accommodating cavity 24, and the automatic liquid discharging mechanism 50 comprises a sleeve rod 500 fixedly connected with a top plate 52 of the automatic liquid supplementing box 5, an inner rod 501 telescopically inserted in the sleeve rod 500 from bottom to top, a sealing ball 502 fixedly connected at the bottom end of the inner rod 501 and a pressure spring 503 sleeved on the periphery of the inner rod 501 and clamped between the sleeve rod 500 and the sealing ball 502; the diameter of the sealing ball 502 is larger than the diameters of the inner rod 501 and the liquid supplementing hole 53; when no external force is applied, the lower end of the sealing ball 502 is pressed against the fluid infusion hole 53, so that the fluid infusion hole 53 is sealed. When external force acts, the sealing ball 502 moves upwards by the external force to compress the pressure spring 503, the inner rod 501 moves upwards relative to the sleeve rod 500, the sealing ball 502 is separated from the liquid supplementing hole 53, the liquid supplementing hole 53 is opened, and absorption liquid can flow downwards through the liquid supplementing hole 53 and enter the tank body 29. The loop bar 500 is used for guiding the inner rod 501 and limiting the inner rod 501 to slide only up and down.
When the absorption liquid is reacted with the exhaust gas to perform desulfurization and denitrification, one of the important factors of the desulfurization and denitrification effect is whether the exhaust gas is sufficiently contacted with the absorption liquid. The conventional method is to adopt a treatment tower to realize the contact reaction of the waste gas and the absorption liquid by a countercurrent contact mode of the waste gas flowing upwards and the absorption liquid flowing downwards. The contact effect of the exhaust gas and the absorption liquid mainly depends on whether the upstream flow of the exhaust gas is uniform, whether the downstream flow of the absorption liquid is uniform, and whether the downstream amount of the absorption liquid is sufficient. It is usually necessary to ensure that a large amount of absorption liquid is continuously sprayed downward, and the amount of exhaust gas intake is also greatly limited. Therefore, the conventional method has the problems that the absorption liquid is wasted greatly, the energy consumption for transporting the absorption liquid is high (the absorption liquid is generally conveyed and sprayed continuously through a pump), the contact between the waste gas and the absorption liquid is still insufficient, the desulfurization and denitrification effects are affected, and the like. The invention can well solve the problem that the contact between the waste gas and the absorption liquid is still insufficient.
In the invention, the disc 23 continuously rotates, so that the disc 23 can continuously absorb the absorption liquid at the lower part of the absorption tank body 29, and the disc 23 is continuously supplemented with the absorption liquid from the lower part, thereby ensuring the amount of the absorption liquid in the disc 23 and ensuring the desulfurization and denitrification effects. The automatic liquid discharging mechanism 50 is further arranged, the absorption liquid contained in the automatic liquid supplementing box 5 can automatically flow out at intervals by utilizing the rotation of the disc 23, the absorption liquid enters the tank body 29, the absorption liquid flowing out of the automatic liquid supplementing box 5 drops into the annular groove 233, enters the disc 23 and then flows downwards along the inside of the disc 23, so that the disc 23 can be further filled with the absorption liquid all the time, the disc 23 can be continuously supplemented with the absorption liquid from the upper part, the waste gas is fully contacted with the absorption liquid, and the desulfurization and denitrification effects are further improved. Since the liquid level of the absorption liquid in the tank 29 is limited and the liquid level preferably does not contaminate the shaft 22, the disc 23 is only partially immersed in the absorption liquid, the absorption liquid supplied to the disc 23 through the lower part is limited, and the absorption liquid amount in the disc 23 can be ensured by adding one absorption liquid supply to the upper part.
Specifically, the gas discharged from the first gas outlet 21 of the tank 29 drives the driving impeller 30 to rotate, and drives the disc 23 to rotate through the rotating shaft 22, and different areas on the periphery of the disc 23 are continuously immersed in the absorption liquid to supplement the absorption liquid for the disc 23. The outer end of the push rod 234 extends out of the annular groove 233, and when the disk 23 rotates, the outer end of the push rod 234 can contact the sealing ball 502 and can not contact the bottom plate 51 of the automatic liquid replenishing box 5. Referring to fig. 6 and 7, when the disc 23, the arc-shaped guide surface 235 at the outer end of the top rod 234 contacts the bottom of the sealing ball 502, the inner rod 501 moves linearly upward under the guiding action of the sleeve rod 500 along with the rotation of the top rod 234, the pressure spring 503 is pressed, the sealing ball 502 is separated from the fluid infusion hole 53, the fluid infusion hole 53 is opened, the absorption liquid flows downward through the fluid infusion hole 53 and enters the tank 29, the absorption liquid drops into the annular groove 233 and enters the disc 23, and then flows downward along the inside of the disc 23, so that the absorption liquid is automatically supplemented for the disc 23. Referring to fig. 8, when the push rod 234 continues to rotate over the sealing ball 502, under the downward elastic force of the compression spring 503, the inner rod 501 drives the sealing ball 502 to move downward, and presses against the fluid infusion hole 53, so that the fluid infusion hole 53 is sealed, and the absorption liquid is prevented from flowing out continuously. The automatic liquid discharging mechanism 50 can automatically and intermittently open the liquid replenishing holes 53 to replenish the absorption liquid for the disc 23 from the upper part, so that the absorption liquid can be fully filled in the disc 23, and the absorption liquid waste caused by continuous liquid replenishing can be prevented. The amount of the absorption liquid replenished from above can be adjusted by increasing the number of the lift pins 234 or adjusting the length of the lift pins 234 protruding from the annular groove 233: the larger the amount, the larger the amount of the absorbent liquid to be replenished. The greater the length of the push rod 234 extending out of the annular groove 233, the greater the height of the push rod 234 to push up the seal ball 502, and the greater the amount of the absorption liquid to be discharged.
And when the air input is bigger, the gas quantity discharged from the tank body 29 is bigger, the rotating speed of the driving impeller 30 is bigger, the disc 23 rotates and is increased, the absorption liquid quantity sucked from the lower part of the disc 23 is increased, the absorption liquid of the upper flow of the automatic liquid discharging mechanism 50 is also increased (after the rotating speed of the disc 23 is increased, the interval of opening the liquid replenishing holes 53 each time is shortened), so that the effect of replenishing the absorption liquid by the disc 23 is enhanced, and finally, the desulfurization and denitrification effects of the waste gas by the disc 23 can be synchronously enhanced. Therefore, the air inlet load can be automatically adapted to the change of the air inlet load within a certain range: the larger the air inflow is, the stronger the effect of supplementing the absorption liquid by the disc 23 is, and the desulfurization and denitrification effects can be ensured; when the intake air amount is decreased, the absorption liquid supplied to the disk 23 is decreased, and the absorption liquid consumption can be reduced.
The arc-shaped guide surface 235 at the outer end of the ejector rod 234 enables the ejector rod 234 to be in contact with the sealing ball 502 through an arc surface, so that the ejector rod 234 can be favorable for pushing the sealing ball 502 to move upwards, and the phenomenon that the movement is blocked is avoided.
The sealing ball 502 is preferably a sphere with certain elasticity, or an elastic sealing member is disposed on the sealing ball 502 or the fluid replenishing hole 53, so that the sealing ball 502 can have a good sealing effect when being pressed on the fluid replenishing hole 53, and leakage is prevented.
In a further preferred embodiment, referring to fig. 10, a fixing threaded hole for inserting the top rod 234 is formed on the inner wall of the bottom of the annular groove 233, a threaded portion 2340 matched with the fixing threaded hole is arranged at the inner end of the top rod 234, and a convex pillar 2341 is arranged in the middle of the top rod 234. The length of the ejector rod 234 extending out of the annular groove 233 can be adjusted by adjusting the depth of screwing the ejector rod 234 into the fixing threaded hole, so that the amount of the absorption liquid flowing out of the liquid replenishing hole 53 can be adjusted. The boss 2341 is provided to facilitate rotation of the push rod 234. The post 2341 can be held by hand to rotate the top rod 234.
In another further preferred embodiment, referring to fig. 11, the top rod 234 is a telescopic rod, and includes a thick rod 2342 fixed to the inner wall of the bottom of the annular groove 233, a insertion hole 2343 formed in the thick rod 2342, a thin rod 2344 telescopically inserted into the insertion hole 2343, a locking screw hole 2345 formed in the side wall of the thick rod 2342 and penetrating through the insertion hole 2343, and a locking screw bolt 2346 inserted into the locking screw hole 2345, wherein the inner end of the locking screw bolt 2346 for abutting against the thin rod 2344 is arc-shaped, and an arc-shaped guide surface 235 is provided at the upper end of the thin rod 2344. The length of the top rod 234 protruding from the annular groove 233 can be adjusted by adjusting the depth of insertion of the thin rod 2344 into the thick rod 2342, and the amount of the absorbent flowing out from the liquid replenishing hole 53 can be adjusted. During adjustment, the locking stud 2346 is rotated firstly, the inner end of the locking stud 2346 is separated from the side wall of the thin rod 2344, then the thin rod 2344 is pulled up and down, the locking stud 2346 is screwed after adjustment is completed, and the inner end of the locking stud 2346 is tightly pressed against the side wall of the thin rod 2344, so that the thin rod 2344 is locked and fixed.
It should be understood that, in the present invention, the components in contact with the absorption liquid should preferably be made of corrosion-resistant material to ensure the use of the device.
Further, the second fluid infusion device 44 includes a second fluid reservoir 46 communicated with the fluid inlet 25 formed on the tank 29 through a second fluid infusion pipe 45, and a fluid infusion pump 47 disposed on the second fluid infusion pipe 45. The tank 29 can be replenished with fresh absorbent by means of a replenishment pump 47. A waste liquid discharge port 26 is further formed in the tank body 29, and the waste liquid discharge port 26 is connected with a waste liquid storage tank 27 through a pipeline so as to realize absorption liquid replacement.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. A waste gas desulfurization and denitrification treatment device is characterized by comprising an air inlet pipe, a dust removal device, an air inlet fan and an oxidation device, a desulfurization and denitrification tank, a driving device, a tail gas discharge pipe and an absorption liquid supply device, wherein the dust removal device, the air inlet fan and the oxidation device are sequentially arranged on the air inlet pipe along the airflow direction;
the desulfurization and denitrification tank comprises a tank body, a rotating shaft and at least one disc, wherein the rotating shaft is rotatably arranged in the tank body along the horizontal direction, the disc is fixedly connected to the rotating shaft, absorption liquid is contained in the tank body, and one part of the disc is immersed in the absorption liquid;
the driving device comprises a box body and a driving impeller which is rotatably arranged in the box body and connected with the rotating shaft, wherein a first air outlet of the tank body is communicated with a second air inlet of the box body through a first air transmission pipeline, so that the driving impeller is driven to rotate through gas exhausted from the tank body, and the disc coaxial with the driving impeller is driven to rotate.
2. The apparatus for desulfurization and denitrification of exhaust gas according to claim 1, wherein the tank body has a cylindrical shape, and the central axis thereof coincides with the axis of the rotating shaft; the peripheral lateral wall of the jar body is outwards protruding, forms quantity with the annular that the disc is the same holds the chamber, the rotatable setting of disc is in the annular holds the intracavity.
3. The apparatus for desulfurization and denitrification of exhaust gas according to claim 2, wherein the disk comprises a disk body, disk-shaped support nets disposed on both side surfaces of the disk body, and a shaft hole opened in the middle of the disk body for the shaft to pass through;
the diameters of the two disc-shaped supporting nets are larger than that of the disc body, an annular groove is formed between the periphery of the two disc-shaped supporting nets and the peripheral side wall of the disc body, a plurality of ejector rods fixedly connected with the peripheral side wall of the disc body are arranged in the annular groove in an annular array mode, and the outer ends of the ejector rods extend out of the annular groove; the disc body is internally provided with a porous structure.
4. The apparatus for desulfurization and denitrification processing of exhaust gas according to claim 3, wherein the outer end of the ejector pin has an arc-shaped guide surface.
5. The apparatus according to claim 4, wherein the inner wall of the bottom of the annular groove is provided with a fixing threaded hole into which the rod is inserted, the inner end of the rod is provided with a threaded portion engaged with the fixing threaded hole, and the middle of the rod is provided with a convex column.
6. The exhaust gas desulfurization and denitrification treatment device according to claim 4, wherein the ejector rod is a telescopic rod, and comprises a thick rod fixedly connected with the inner wall of the bottom of the annular groove, an insertion hole formed in the thick rod, a thin rod telescopically inserted in the insertion hole, a locking threaded hole formed inward from the side wall of the thick rod and penetrating through the insertion hole, and a locking stud inserted in the locking threaded hole, wherein the inner end of the locking stud, which is used for abutting against the thin rod, is arc-shaped, and the arc-shaped guide surface is arranged at the upper end of the thin rod.
7. The apparatus according to claim 3, wherein the absorption liquid supply device comprises a first liquid supply device and a second liquid supply device, and the first liquid supply device comprises a first liquid storage tank for storing the absorption liquid, an automatic liquid supply box connected with the first liquid storage tank through a first liquid supply pipeline, and an automatic liquid discharge mechanism disposed in the automatic liquid supply box.
8. The apparatus according to claim 7, wherein the automatic liquid replenishing box is fixedly connected to an outer wall of the annular accommodating chamber, and a bottom plate of the automatic liquid replenishing box is provided with a liquid replenishing hole communicated with the annular accommodating chamber;
the automatic liquid discharging mechanism comprises a loop bar fixedly connected with a top plate of the automatic liquid replenishing box, an inner rod telescopically inserted in the loop bar from bottom to top, a sealing ball fixedly connected at the bottom end of the inner rod and a pressure spring sleeved on the periphery of the inner rod and clamped between the loop bar and the sealing ball;
the diameter of the sealing ball is larger than the diameters of the inner rod and the liquid supplementing hole; when no external force is applied, the lower end of the sealing ball is pressed against the fluid infusion hole, so that the fluid infusion hole is sealed.
9. The apparatus according to claim 7, wherein the second fluid infusion device comprises a second fluid reservoir connected to a fluid inlet provided on the tank body via a second fluid infusion pipe, and a fluid infusion pump provided on the second fluid infusion pipe.
10. The exhaust gas desulfurization and denitrification treatment device according to claim 1, wherein the box body is further provided with a second gas outlet, and the second gas outlet is communicated with the exhaust gas discharge pipe through a second gas transmission pipeline;
the tank body is also provided with a waste liquid discharge port, and the waste liquid discharge port is connected with a waste liquid storage tank through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911331656.0A CN110841426B (en) | 2019-12-21 | 2019-12-21 | Waste gas desulfurization and denitrification treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911331656.0A CN110841426B (en) | 2019-12-21 | 2019-12-21 | Waste gas desulfurization and denitrification treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110841426A true CN110841426A (en) | 2020-02-28 |
| CN110841426B CN110841426B (en) | 2024-03-15 |
Family
ID=69610169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911331656.0A Active CN110841426B (en) | 2019-12-21 | 2019-12-21 | Waste gas desulfurization and denitrification treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110841426B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477074A (en) * | 2021-06-08 | 2021-10-08 | 雷博文 | Industrial waste gas purifying equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130309139A1 (en) * | 2012-05-15 | 2013-11-21 | Takeshi Kimura | Flue-gas desulfurization equipment |
| CN204533951U (en) * | 2015-04-24 | 2015-08-05 | 吴江华衍水务有限公司 | A kind of water supply line |
| CN207137658U (en) * | 2017-07-28 | 2018-03-27 | 西安赫立盖斯新能源科技有限公司 | A kind of foul waste gas removing means |
| CN110152476A (en) * | 2019-06-18 | 2019-08-23 | 合肥工业大学 | A kind of device and method of flue gas synchronized desulfuring and denitrifying |
| CN110215821A (en) * | 2019-04-30 | 2019-09-10 | 江苏海事职业技术学院 | Marine exhaust washing desulphurization packed tower |
| CN110496512A (en) * | 2019-09-16 | 2019-11-26 | 苏州仕净环保科技股份有限公司 | A kind of industrial organic exhaust gas processing system |
| CN110538564A (en) * | 2019-09-29 | 2019-12-06 | 苏州仕净环保科技股份有限公司 | Acid exhaust treatment device with tail gas monitoring function |
| CN211562414U (en) * | 2019-12-21 | 2020-09-25 | 苏州仕净环保科技股份有限公司 | Waste gas desulfurization and denitration treatment device |
-
2019
- 2019-12-21 CN CN201911331656.0A patent/CN110841426B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130309139A1 (en) * | 2012-05-15 | 2013-11-21 | Takeshi Kimura | Flue-gas desulfurization equipment |
| CN204533951U (en) * | 2015-04-24 | 2015-08-05 | 吴江华衍水务有限公司 | A kind of water supply line |
| CN207137658U (en) * | 2017-07-28 | 2018-03-27 | 西安赫立盖斯新能源科技有限公司 | A kind of foul waste gas removing means |
| CN110215821A (en) * | 2019-04-30 | 2019-09-10 | 江苏海事职业技术学院 | Marine exhaust washing desulphurization packed tower |
| CN110152476A (en) * | 2019-06-18 | 2019-08-23 | 合肥工业大学 | A kind of device and method of flue gas synchronized desulfuring and denitrifying |
| CN110496512A (en) * | 2019-09-16 | 2019-11-26 | 苏州仕净环保科技股份有限公司 | A kind of industrial organic exhaust gas processing system |
| CN110538564A (en) * | 2019-09-29 | 2019-12-06 | 苏州仕净环保科技股份有限公司 | Acid exhaust treatment device with tail gas monitoring function |
| CN211562414U (en) * | 2019-12-21 | 2020-09-25 | 苏州仕净环保科技股份有限公司 | Waste gas desulfurization and denitration treatment device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477074A (en) * | 2021-06-08 | 2021-10-08 | 雷博文 | Industrial waste gas purifying equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110841426B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110841427A (en) | Flue gas desulfurization and denitrification device for factory | |
| CN211562414U (en) | Waste gas desulfurization and denitration treatment device | |
| CN110841426A (en) | Waste gas desulfurization and denitration treatment device | |
| CN202212098U (en) | Self-priming gas-liquid mass transfer reactor | |
| CN111892209B (en) | Wastewater treatment device and method convenient for full catalytic oxidation | |
| CN112604479A (en) | Chemical processing waste gas purification method | |
| CN212091569U (en) | Flue gas desulfurization and denitrification device for factory | |
| CN109865414A (en) | A kind of novel absorbent charcoal desulfuring and denitrifying apparatus | |
| CN117138529A (en) | Odor deep treatment system | |
| CN218145945U (en) | Active carbon adsorption system that dye liquor mother liquor was handled | |
| CN216837317U (en) | Biochemical reactor for removing hydrogen sulfide rich liquid from methane | |
| CN212222539U (en) | Waste water catalytic oxidation equipment | |
| CN110180328A (en) | A kind of industrial waste gas purifying processing unit | |
| CN211302577U (en) | Sewage odor treatment device | |
| CN2341977Y (en) | Deep purifier for reuse of waste water | |
| CN109806753B (en) | Reduction circulation desulfurization device and desulfurization method | |
| CN209423335U (en) | A kind of catalysts addition mechanism of exhaust-gas treatment reaction tank | |
| CN208943789U (en) | A kind of stuffing spray-washing sewage deodorizing device | |
| CN219631014U (en) | Flue gas desulfurization device | |
| CN219879545U (en) | Exhaust gas desulfurization device for semi-coke production | |
| KR0144434B1 (en) | The fluidisible drying device and the operating method for preparing a impregnated carbon | |
| CN219111262U (en) | Moving bed organic waste gas adsorption tower | |
| CN114804428B (en) | Oxidation treatment device capable of realizing dynamic operation of catalyst | |
| CN212701301U (en) | Environment-friendly chemical industry sewage deodorizing device | |
| CN209456135U (en) | A kind of fixed bed device for Fenton catalytic oxidation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 215000 No. 58, Jinrui Road, Taiping Street, Xiangcheng District, Suzhou City, Jiangsu Province Applicant after: Suzhou Shijing Technology Co.,Ltd. Address before: 215000 4th floor, 82 Jincheng Road, Taiping Street, Xiangcheng District, Suzhou City, Jiangsu Province Applicant before: SUZHOU SHIJING ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |