CN209828702U - Exhaust treatment device is used in processing of ammonium paratungstate - Google Patents
Exhaust treatment device is used in processing of ammonium paratungstate Download PDFInfo
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- CN209828702U CN209828702U CN201920443884.6U CN201920443884U CN209828702U CN 209828702 U CN209828702 U CN 209828702U CN 201920443884 U CN201920443884 U CN 201920443884U CN 209828702 U CN209828702 U CN 209828702U
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- main shaft
- tower body
- outlet
- treatment device
- acid
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- XAYGUHUYDMLJJV-UHFFFAOYSA-Z decaazanium;dioxido(dioxo)tungsten;hydron;trioxotungsten Chemical compound [H+].[H+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O XAYGUHUYDMLJJV-UHFFFAOYSA-Z 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000002253 acid Substances 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 239000002912 waste gas Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 16
- 238000012856 packing Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 239000007921 spray Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- 238000005457 optimization Methods 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 4
- 229910001930 tungsten oxide Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ITZSSQVGDYUHQM-UHFFFAOYSA-N [Ag].[W] Chemical compound [Ag].[W] ITZSSQVGDYUHQM-UHFFFAOYSA-N 0.000 description 1
- OWUGOENUEKACGV-UHFFFAOYSA-N [Fe].[Ni].[W] Chemical compound [Fe].[Ni].[W] OWUGOENUEKACGV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000004984 smart glass Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- WLTSUBTXQJEURO-UHFFFAOYSA-N thorium tungsten Chemical compound [W].[Th] WLTSUBTXQJEURO-UHFFFAOYSA-N 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to an ammonium paratungstate processing waste gas treatment device, this ammonium paratungstate processing waste gas treatment device, including the barrel, the inside of barrel is equipped with the main shaft, is equipped with a plurality of stirring vane on the main shaft of barrel inside, and the left end of main shaft extends to the outside of barrel to connect actuating mechanism; the main shaft is a hollow shaft, and a plurality of vent holes are formed in the main shaft inside the cylinder; the exhaust port is connected with a waste gas treatment device through a pipeline, the waste treatment device comprises a tower body, and the upper part inside the tower body is provided with an acid water tank; a filler component is arranged below the clapboard; the utility model discloses a hollow (mixing) shaft is dried the material in the stirring, and drying efficiency is high, handles waste gas through the mode that sprays in addition, avoids direct exhaust pollution, environmental protection.
Description
Technical Field
The utility model belongs to the technical field of ammonium paratungstate processing, concretely relates to exhaust treatment device is used in ammonium paratungstate processing.
Background
Tungsten trioxide is used for a variety of purposes in daily life. It is often used in the manufacture of tungstate from industrial X-ray screen phosphors and fire-resistant fabrics. Tungsten oxide is also used as a pigment in ceramics and paints due to its abundant yellow element.
Tungsten trioxide has been employed in the production of electrochromic windows, smart windows. These windows are the glass of an electric switch, and the light transmission performance and the variation of the applied voltage. This allows the user to tint their window through changes in heat or light. Another use is in high density inert metal explosives, and the comparison of the use of these devices is significantly the conflict between israel and sanded zones in 2008 + 2009.
A part of the tungsten oxide is used for producing chemical products, such as paint and coating, catalysts in the petroleum industry and the like; however, tungsten oxide is an intermediate product, a large amount of tungsten oxide is used for metal tungsten powder and tungsten carbide powder, and is further used for producing metal tungsten products, and alloy products of tungsten are applied and produced in large amount, such as tungsten copper, tungsten nickel iron, tungsten silver, tungsten rhenium, tungsten thorium and the like, while the most widely applied tungsten in the contemporary industrial field is hard alloy products with various brands and purposes produced by taking tungsten as a base material
Tungsten trioxide can be obtained by thermal decomposition of ammonium paratungstate. The ammonium paratungstate purified by recrystallization is put into a porcelain crucible, and when the porcelain crucible is heated to about 400 ℃ or higher, ammonia is volatilized out to obtain the tungsten trioxide.
As a raw material of tungsten trioxide, ammonium paratungstate is prepared by adding sodium carbonate and sodium nitrate into black tungsten concentrate for sintering, crushing and leaching to obtain crude sodium tungstate, removing impurities, dissolving artificial white tungsten and acid to obtain tungstic acid, dissolving ammonium, and evaporating and crystallizing to obtain an ammonium paratungstate product; ammonium paratungstate product need smash just can pack after drying, and drying device among the prior art, inefficiency, the production of drying moreover contains ammonia waste gas and causes the pollution to the environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an ammonium paratungstate processing exhaust treatment device that drying efficiency is high in order to solve above-mentioned problem, and avoid the pollution to the environment.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a waste gas treatment device for processing ammonium paratungstate comprises a cylinder body, wherein a main shaft is arranged inside the cylinder body, a plurality of stirring blades are arranged on the main shaft inside the cylinder body, and the left end of the main shaft extends to the outside of the cylinder body and is connected with a driving mechanism; the main shaft is a hollow shaft, a plurality of vent holes are formed in the main shaft inside the cylinder body, the vent holes are communicated with a central cavity of the main shaft, and the left end of the main shaft is connected with a hot air supply pipe through a rotary joint;
the top of the cylinder body is provided with a feed inlet and an exhaust port, and the left side of the bottom of the cylinder body is provided with a discharge outlet; the exhaust port is connected with a waste gas treatment device through a pipeline, the waste treatment device comprises a tower body, the upper part of the interior of the tower body is provided with an acid water tank, the periphery of the acid water tank is fixedly connected with the tower body, a stirring shaft is arranged in the acid water tank, and the top of the stirring shaft is connected with an output shaft of a stirring motor through a coupling; a water outlet is formed in the bottom of the sour water tank, a valve is arranged on the water outlet, a partition plate is arranged below the sour water tank, and a plurality of liquid outlet holes are formed in the partition plate; adding acid and water into the acid water tank for dilution, stirring to accelerate dilution, allowing the diluted acid water to enter the upper part of the partition plate through a water outlet of the acid water tank, and then downwards flowing out through a liquid outlet hole on the partition plate to spray gas;
and a packing assembly is arranged below the partition plate, the packing assembly comprises two porous plates, and packing is filled between the two porous plates.
As a further optimization scheme of the utility model, an air inlet is arranged on the tower body below the filler assembly, an air outlet is arranged on the tower body below the partition plate, and a water inlet and an acid inlet which are communicated with the acid water tank are arranged on the upper part of the tower body and are respectively connected with a water supply pipeline and a gas supply pipeline; the bottom of the tower body is provided with a water outlet; valves are arranged on the air inlet, the air outlet, the water inlet, the acid inlet and the water outlet.
As a further optimization scheme of the utility model, actuating mechanism includes the epaxial driving pulley of main epaxial driven pulleys and driving motor's output shaft, is connected through the belt between driving pulley and the driven pulleys. The driving motor drives the driving belt wheel, and then the driven belt wheel and the main shaft are driven to rotate through belt transmission.
As a further optimization scheme of the utility model, be equipped with the filter on the gas vent of barrel, this filter can be the filter screen. Prevent the discharge of interior material from the gas vent.
As a further optimization scheme of the utility model, a plurality of blades are arranged on the stirring shaft.
As a further preferred embodiment of the present invention, the acid is hydrochloric acid.
As the utility model discloses a further optimization scheme, the barrel outside sets up and presss from both sides the cover, and the bottom of barrel is equipped with and presss from both sides the gas vent of the inside intercommunication of cover, and the top that presss from both sides the cover is equipped with the export, and this export passes through the air inlet of pipe connection tower body.
The beneficial effects of the utility model reside in that:
1) the utility model dries the material while stirring through a hollow stirring shaft, and the drying efficiency is high;
2) the utility model discloses in will drying the in-process and contain ammonia waste gas and discharge into exhaust treatment device, then handle waste gas through the mode that sprays, avoid direct exhaust pollution.
Drawings
Fig. 1 is a schematic structural diagram of the present invention in the first embodiment;
fig. 2 is a schematic structural view of an exhaust gas treatment device according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of the present invention in the second embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
As shown in fig. 1-2, an exhaust gas treatment device for ammonium paratungstate processing comprises a cylinder 1, wherein a main shaft 2 is arranged inside the cylinder 1, a plurality of stirring blades 3 are arranged on the main shaft 2 inside the cylinder 1, and the left end of the main shaft 2 extends to the outside of the cylinder 1 and is connected with a driving mechanism;
the main shaft 2 is a hollow shaft, a plurality of vent holes are formed in the main shaft 2 in the barrel 1 and communicated with a central cavity of the main shaft 2, and the left end of the main shaft 2 is connected with a hot air supply pipe through a rotary joint 4;
the top of the cylinder body 1 is provided with a feed inlet and an exhaust outlet, and the left side of the bottom is provided with a discharge outlet;
the exhaust port is connected with a waste gas treatment device through a pipeline, the waste treatment device comprises a tower body 5, an acid water tank 6 is arranged at the upper part inside the tower body 5, the tower body 5 is fixedly connected to the periphery of the acid water tank 6, a stirring shaft 7 is arranged inside the acid water tank 6, and the top of the stirring shaft 7 is connected with an output shaft of a stirring motor 8 through a coupling; a water outlet is formed in the bottom of the sour water tank 6, a valve is arranged on the water outlet, a partition plate 9 is arranged below the sour water tank 6, and a plurality of liquid outlet holes are formed in the partition plate; adding acid and water into the acid water tank 6 for dilution, then stirring to accelerate dilution, enabling the diluted acid water to enter the upper part of the partition plate 9 through the water outlet of the acid water tank 6, and then enabling the diluted acid water to flow downwards through the liquid outlet hole in the partition plate 9 to spray gas;
a packing assembly is arranged below the partition plate 9, the packing assembly comprises two perforated plates 10, and packing 11 is filled between the two perforated plates 10.
The tower body 5 below the filler assembly is provided with an air inlet, the tower body 5 below the partition plate 9 is provided with an air outlet, and the upper part of the tower body 5 is provided with a water inlet and an acid inlet which are communicated with the acid water tank 6 and are respectively connected with a water supply pipeline and an air supply pipeline; the bottom of the tower body 5 is provided with a water outlet; valves are arranged on the air inlet, the air outlet, the water inlet, the acid inlet and the water outlet.
The driving mechanism includes a driven pulley 14 on the main shaft 2 and a driving pulley 13 on an output shaft of the driving motor 12, and the driving pulley 13 and the driven pulley 14 are connected by a belt. The driving motor 12 drives the driving belt wheel 13, and then drives the driven belt wheel 14 and the main shaft 2 to rotate through belt transmission.
The exhaust port of the cylinder 1 is provided with a filter, which may be a strainer. Prevent the discharge of interior material from the gas vent.
Above-mentioned, be equipped with a plurality of blade on the (mixing) shaft 7.
The acid may be hydrochloric acid.
The utility model discloses a structural feature and theory of operation: the driving mechanism drives the main shaft 2 to rotate and stir the materials added from the feeding hole, meanwhile, hot air is discharged from the exhaust port of the main shaft 2 to dry the materials inside, and then the hot air is discharged into the waste gas treatment device from the exhaust port; mix the sour water in abandonment processing apparatus's the sour water tank 6, then the liquid outlet through baffle 9 forms and sprays rivers, sprays the hot-blast air that gets into from the air inlet, gets rid of the ammonia that contains in the waste gas, and in order to raise the efficiency, hot-blast at first through the filler subassembly, reduces its velocity of flow when its increase and liquid area of contact.
It should be noted that the main shaft 2 is a hollow shaft, and the structure is equivalent to a pipeline, so that the left end rotary joint 4 is equivalent to be connected with the pipeline. The hot air supply pipe can be connected with equipment such as an air heater and the like.
The motors are all existing mature equipment and are connected with a power supply through a switch.
Example two
As shown in fig. 3, in the first embodiment, a jacket 21 is provided outside the cylinder 1, an exhaust port communicating with the inside of the jacket 21 is provided at the bottom of the cylinder 1, and an outlet connected to an intake port of the tower 5 through a pipe is provided at the top of the jacket 21.
The exhausted hot wind firstly enters the jacket 21, the heat preservation and heating are carried out on the cylinder body 1 through the jacket 21, the waste heat is utilized, and then the hot wind is exhausted into the tower body 5 for treatment.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. The utility model provides an ammonium paratungstate processing is with exhaust treatment device, includes the barrel, its characterized in that: a main shaft is arranged in the barrel, a plurality of stirring blades are arranged on the main shaft in the barrel, and the left end of the main shaft extends to the outside of the barrel and is connected with a driving mechanism; the main shaft is a hollow shaft, a plurality of vent holes are formed in the main shaft inside the cylinder body, the vent holes are communicated with a central cavity of the main shaft, and the left end of the main shaft is connected with a hot air supply pipe through a rotary joint;
the top of the cylinder body is provided with a feed inlet and an exhaust port, and the left side of the bottom of the cylinder body is provided with a discharge outlet; the exhaust port is connected with a waste gas treatment device through a pipeline, the waste treatment device comprises a tower body, the upper part of the interior of the tower body is provided with an acid water tank, the periphery of the acid water tank is fixedly connected with the tower body, a stirring shaft is arranged in the acid water tank, and the top of the stirring shaft is connected with an output shaft of a stirring motor through a coupling; the bottom of the sour water tank is provided with a water outlet, a valve is arranged on the water outlet, a partition plate is arranged below the sour water tank, and a plurality of liquid outlet holes are arranged on the partition plate
And a packing assembly is arranged below the partition plate, the packing assembly comprises two porous plates, and packing is filled between the two porous plates.
2. The apparatus of claim 1, wherein the apparatus comprises: the tower body below the filler assembly is provided with an air inlet, the tower body below the partition plate is provided with an air outlet, and the upper part of the tower body is provided with a water inlet and an acid inlet which are communicated with the acid water tank and are respectively connected with a water supply pipeline and an air supply pipeline; the bottom of the tower body is provided with a water outlet; valves are arranged on the air inlet, the air outlet, the water inlet, the acid inlet and the water outlet.
3. The apparatus of claim 1, wherein the apparatus comprises: the driving mechanism comprises a driven belt wheel on the main shaft and a driving belt wheel on an output shaft of the driving motor, and the driving belt wheel is connected with the driven belt wheel through a belt.
4. The apparatus of claim 1, wherein the apparatus comprises: and a filter is arranged on the exhaust port of the cylinder body.
5. The apparatus of claim 1, wherein the apparatus comprises: and a plurality of blades are arranged on the stirring shaft.
6. The apparatus of claim 1, wherein the apparatus comprises: the acid is hydrochloric acid.
7. The apparatus of claim 1, wherein the apparatus comprises: the outside of the cylinder body is provided with a jacket, the bottom of the cylinder body is provided with an air outlet communicated with the inside of the jacket, the top of the jacket is provided with an outlet, and the outlet is connected with an air inlet of the tower body through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920443884.6U CN209828702U (en) | 2019-04-03 | 2019-04-03 | Exhaust treatment device is used in processing of ammonium paratungstate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920443884.6U CN209828702U (en) | 2019-04-03 | 2019-04-03 | Exhaust treatment device is used in processing of ammonium paratungstate |
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|---|---|
| CN209828702U true CN209828702U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920443884.6U Active CN209828702U (en) | 2019-04-03 | 2019-04-03 | Exhaust treatment device is used in processing of ammonium paratungstate |
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| CN (1) | CN209828702U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902611A (en) * | 2021-01-28 | 2021-06-04 | 常州飞达新材料科技有限公司 | A kind of benzocaine production system and production technology |
| CN116659196A (en) * | 2023-08-02 | 2023-08-29 | 山东华玺食品科技有限公司 | A kind of drying and sterilization classification equipment for food processing |
| CN117582687B (en) * | 2023-12-04 | 2026-02-17 | 北京大学 | A mixed gas recovery system based on iodine vapor and ammonia and its application |
-
2019
- 2019-04-03 CN CN201920443884.6U patent/CN209828702U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902611A (en) * | 2021-01-28 | 2021-06-04 | 常州飞达新材料科技有限公司 | A kind of benzocaine production system and production technology |
| CN116659196A (en) * | 2023-08-02 | 2023-08-29 | 山东华玺食品科技有限公司 | A kind of drying and sterilization classification equipment for food processing |
| CN116659196B (en) * | 2023-08-02 | 2023-09-29 | 山东华玺食品科技有限公司 | Food processing is with stoving classification equipment that disinfects |
| CN117582687B (en) * | 2023-12-04 | 2026-02-17 | 北京大学 | A mixed gas recovery system based on iodine vapor and ammonia and its application |
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