CN111397320B - Water treatment agent extract drying device for removing aniline from industrial wastewater - Google Patents
Water treatment agent extract drying device for removing aniline from industrial wastewater Download PDFInfo
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- CN111397320B CN111397320B CN202010288628.1A CN202010288628A CN111397320B CN 111397320 B CN111397320 B CN 111397320B CN 202010288628 A CN202010288628 A CN 202010288628A CN 111397320 B CN111397320 B CN 111397320B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
- F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/003—Supply-air or gas filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
- F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
Abstract
The invention belongs to the technical field of water treatment agent production, and particularly relates to a water treatment agent extract drying device for removing aniline from industrial wastewater, aiming at the problems that most traditional drying devices are simple in structure and general in drying uniformity and easily dissipate a large amount of heat in the process of discharging water vapor, the invention provides the following scheme. According to the invention, the blades can be blown by the blower, and the air distribution rotary drum is driven to rotate by matching with the sliding resistance reduction effect of the annular groove and the balls, so that hot air is uniformly blown to the materials in the charging net drum through the conical air inlet holes, and the drying uniformity of the materials is improved.
Description
Technical Field
The invention relates to the technical field of water treatment agent production, in particular to a water treatment agent extract drying device for removing aniline from industrial wastewater.
Background
The industrial wastewater comprises production wastewater, production sewage and cooling water, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. The industrial wastewater has various types and complex components. For example, the waste water from electrolytic salt industry contains mercury, the waste water from heavy metal smelting industry contains various metals such as lead and cadmium, the waste water from electroplating industry contains various heavy metals such as cyanide and chromium, the waste water from petroleum refining industry contains phenol, and the waste water from pesticide manufacturing industry contains various pesticides.
In industrial wastewater treatment, treatment agents are often required to be added, and the extract of the treatment agents needs to be dried during production. For example, chinese patent No. CN208287514U discloses an extract drying device, which includes: the centrifugal drying tower body is provided with a drying cavity, and the drying cavity is provided with a discharge hole; the drying box is provided with a drying cavity, the drying cavity is provided with a feeding channel and a discharging channel, and the side wall of the drying cavity is provided with drying holes; the pipe cavity has been seted up to the body, and the one end and the lateral wall of discharge gate of body are connected. However, the drying method of the above patent is simple, and when the water vapor is discharged, the drying method is easy to emit more heat, and has certain limitation.
Disclosure of Invention
Based on the technical problems that most of traditional drying devices are simple in structure, general in drying uniformity and easy to dissipate a large amount of heat in the process of discharging water vapor, the invention provides the water treatment agent extract drying device for removing aniline from industrial wastewater.
The invention provides a water treatment agent extract drying device for removing aniline from industrial wastewater, which comprises an air inlet end with support legs welded at four corners of the outer wall of the bottom, an air inlet plate fixed at the bottom end of the air inlet end through bolts, obliquely arranged air collecting plates welded at two sides of the air inlet end close to the top end, an arc-shaped plate welded at the top end of the air collecting plate, a resistance heating wire fixedly arranged on the inner wall of the arc-shaped plate, a heat preservation outer cylinder welded at the outer wall of the top end of the air inlet end, a fixed ring plate welded at the port part of the heat preservation outer cylinder close to the port, a charging net cylinder clamped at the top end of the fixed ring plate, an air distribution rotary cylinder arranged at the bottom end of the fixed ring plate, uniformly distributed conical air inlet holes arranged on the inner wall of the air distribution rotary cylinder, blades fixed at the inner bottom of the air distribution rotary cylinder through screws, a cylinder groove arranged at the bottom end of the charging net cylinder, and a transverse through net pipe arranged at one side of the cylinder opposite to the charging net cylinder, the top joint of heat preservation urceolus has the apron, and the apron installs waste heat recovery mechanism with the relative one side of inlet end.
Preferably, the outer wall of the bottom end of the gas collecting plate is provided with strip-shaped gas guide grooves distributed at equal intervals, the bottom end of the gas inlet end is provided with a slot, and the inner wall of the slot is inserted with a filter screen plate.
Preferably, the cross section of the fixing ring plate is concave.
Preferably, the waste heat recovery mechanism comprises a heat exchange tube fixed at the top end of the air inlet plate, the top end of the air inlet plate is provided with a strip-shaped air inlet matched with the diameter of the heat exchange tube, and the outer wall of the heat exchange tube is provided with a spiral groove.
Preferably, the bottom end of the strip-shaped air inlet is provided with an air expansion port communicated with the air inlet, and one side of the air inlet end, which is close to the air collecting plate, is fixed with a blower through a bolt.
Preferably, the waste heat recovery mechanism further comprises a corrugated hose connected to the cover plate, and one side of the corrugated hose opposite to the heat exchange tube is connected with a steam exhaust tube.
Preferably, the supporting plate is welded to the outer wall of the circumference of the top end of the charging net cylinder, and pull rings are welded to two sides of the outer wall of the top of the supporting plate.
Preferably, the outer wall of the bottom circumference of the cover plate is bonded with a sealing strip, annular grooves are formed in the opposite sides of the gas distribution rotating drum and the fixed annular plate, and the inner walls of the annular grooves are connected with balls distributed at equal intervals in a rolling mode.
Preferably, a reinforcing mechanism is installed on one side of the air distribution rotary drum, which is opposite to the heat preservation outer cylinder.
Preferably, the reinforcing mechanism comprises brackets welded at four corners of the bottom end of the gas distribution rotating cylinder, and the end parts of the brackets are rotatably connected with pulleys in sliding connection with the inner wall of the heat preservation outer cylinder through bearings.
The beneficial effects of the invention are as follows:
1. this water treatment agent extract drying device of aniline is got rid of to industrial waste water through the air collecting plate that sets up, bar air guide groove, is convenient for concentrate the air that the air-blower was inhaled and is bloated to resistance heating wire to guarantee the heating efficiency to the air, guarantee the effect that follow-up material was dried.
2. This water treatment agent extract drying device of aniline is got rid of to industrial waste water can be blown by the air-blower through the paddle that sets up, and the slip drag reduction effect of cooperation ring channel, ball drives and divides the gas rotary drum to rotate, evenly drums to hot-blast through the material of tapered inlet port in to the charging screen section of thick bamboo, improves the dry homogeneity of material.
3. The water treatment agent extract drying device for removing aniline from industrial wastewater can effectively increase the contact area of materials and a charging net cylinder through the arranged cylinder groove; the transverse through net pipes are favorable for effectively increasing the flow of hot air so as to improve the drying effect.
4. The water treatment agent extract drying device for removing aniline from industrial wastewater can blow the heat exchange pipe to heat the entering air in the air inlet process through the arranged waste heat recovery mechanism so as to achieve the purpose of waste heat utilization; through the arranged air expanding port and the strip-shaped air inlet, air can be blown to the heat exchange tube in a centralized manner in the air inlet process, so that the waste heat utilization effect is improved; the spiral groove is beneficial to improving the heat exchange area of the heat exchange tube, so that the heat exchange effect is further improved; through support, the pulley that sets up, can play the supporting role to dividing the gas rotary drum, be favorable to improving the stability of dividing the gas rotary drum.
The parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the device has simple structure and good drying effect.
Drawings
FIG. 1 is a schematic view of the overall structure of an extract drying apparatus for a water treatment agent for removing aniline from industrial wastewater according to the present invention;
FIG. 2 is a schematic structural diagram of a half cross-sectional view of a charging net cylinder of a water treatment agent extract drying device for removing aniline from industrial wastewater, which is provided by the invention;
FIG. 3 is a schematic view of a gas collecting plate structure of a water treatment agent extract drying device for removing aniline from industrial wastewater according to the present invention;
FIG. 4 is a schematic view of an air inlet plate of an extract drying device for a water treatment agent for removing aniline from industrial wastewater according to the present invention;
fig. 5 is an enlarged schematic structural diagram of a point a in fig. 1 of a water treatment agent extract drying device for removing aniline from industrial wastewater according to the present invention.
In the figure: the heat exchanger comprises an air inlet end 1, a heat exchange tube 2, a filter screen plate 3, an air inlet plate 4, an air diffuser 5, a strip-shaped air inlet 6, a blower 7, an air collecting plate 8, an arc-shaped plate 9, a support 10, an exhaust pipe 11, a heat-insulating outer cylinder 12, a corrugated hose 13, a cylinder groove 14, a paddle 15, a cover plate 16, a sealing strip 17, a charging screen cylinder 18, a transverse through network pipe 19, an air distribution rotary cylinder 20, a pulley 21, a resistance heating wire 22, a strip-shaped air guide groove 23, a fixing ring plate 24, a conical air inlet 25 and a ball 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-5, a water treatment agent extract drying device for removing aniline from industrial wastewater comprises an air inlet end 1 with supporting legs welded at four corners of the outer wall of the bottom, an air inlet plate 4 fixed at the bottom end of the air inlet end 1 through bolts, obliquely arranged air collecting plates 8 welded at two sides of the air inlet end 1 close to the top end, arc plates 9 welded at the top ends of the air collecting plates 8, resistance heating wires 22 fixedly installed on the inner walls of the arc plates 9, a heat preservation outer cylinder 12 welded at the outer wall of the top end of the air inlet end 1, a fixed ring plate 24 welded at the position close to the port of the heat preservation outer cylinder 12, a charging screen cylinder 18 clamped at the top end of the fixed ring plate 24, a gas distribution rotary cylinder 20 arranged at the bottom end of the fixed ring plate 24, uniformly distributed conical air inlets 25 arranged on the inner wall of the gas distribution rotary cylinder 20, paddles 15 fixed at the inner bottom of the gas distribution rotary cylinder 20 through screws, and a cylinder groove 14 arranged at the bottom end of the charging screen cylinder 18, a transverse through net pipe 19 is arranged on one side of the barrel groove 14 opposite to the charging net barrel 18, a cover plate 16 is clamped at the top end of the heat-insulating outer barrel 12, and a waste heat recovery mechanism is arranged on one side of the cover plate 16 opposite to the air inlet end 1.
In the invention, the outer wall of the bottom end of the gas collecting plate 8 is provided with strip-shaped gas guide grooves 23 which are distributed at equal intervals, the bottom end of the gas inlet end 1 is provided with a slot, and the inner wall of the slot is inserted with the filter screen plate 3.
Wherein the cross section of the fixed ring plate 24 is concave.
The waste heat recovery mechanism comprises a heat exchange tube 2 fixed at the top end of an air inlet plate 4, a strip-shaped air inlet 6 matched with the path of the heat exchange tube 2 is formed in the top end of the air inlet plate 4, and a spiral groove is formed in the outer wall of the heat exchange tube 2.
Wherein, the bottom of the strip-shaped air inlet 6 is provided with an air expanding port 5 communicated with each other, and one side of the air inlet 1 close to the air collecting plate 8 is fixed with an air blower 7 through a bolt.
Wherein, the waste heat recovery mechanism further comprises a corrugated hose 13 connected to the cover plate 16, and one side of the corrugated hose 13 opposite to the heat exchange tube 2 is connected with a steam exhaust tube 11.
Wherein, the outer wall welding of the top circumference of charging net section of thick bamboo 18 has the layer board, and the top outer wall both sides of layer board have all welded the pull ring.
The outer wall of the bottom circumference of the cover plate 16 is bonded with a sealing strip 17, and the opposite sides of the gas distribution rotating drum 20 and the fixed ring plate 24 are both provided with annular grooves, and the inner walls of the annular grooves are connected with balls 26 which are distributed equidistantly in a rolling manner.
When the invention is used: placing the extract into a charging screen cylinder 18, after the extract is completely charged, covering a cover plate 16, sealing the top end of the device, starting an air blower 7 and a resistance heating wire 22, pumping outside air into an air inlet end 1 through a filter screen plate 3 by the air blower 7, and intensively blowing the air sucked by the air blower 7 to the resistance heating wire 22 through matching of an air collecting plate 8 and a strip-shaped air guide groove 23 so as to ensure the heating efficiency of the air; after the drying is finished, blown hot air blows the blades 15 through the conical air inlet holes 25 at the bottom end, the sliding resistance reduction effect of the annular grooves and the balls 26 is matched, the air distribution rotary drum 20 is driven to rotate, the materials in the charging screen cylinder 18 are uniformly blown to the hot air, and the contact area between the materials and the charging screen cylinder 18 and the flow rate of the hot air are effectively improved by the arrangement of the cylinder grooves 14 and the transverse through network pipes 19, so that the drying effect of the materials is ensured; in the drying process, the generated water vapor is sent into the heat exchange tube 2 through the corrugated hose 13 and the steam exhaust tube 11; in the air inlet process, the air blows the heat exchange tube 2 to heat the entering air so as to achieve the purpose of waste heat utilization; and air is intensively blown to the heat exchange tube 2 by utilizing the air diffuser 5 and the strip-shaped air inlet 6 so as to improve the waste heat utilization effect.
Example 2
Referring to fig. 1, the present embodiment further includes a reinforcing mechanism installed on a side of the air distribution drum 20 opposite to the heat preservation outer cylinder 12, compared to example 1, in the drying apparatus for the water treatment agent extract from the industrial wastewater for removing aniline.
Wherein, the strengthening mechanism is including welding in the support 10 of the four corners of minute gas rotary drum 20 bottom, and the tip of support 10 is connected with through the bearing rotation with the pulley 21 that keeps warm urceolus 12 inner wall sliding connection.
When the invention is used: through the arrangement of the bracket 10 and the pulley 21, the air distribution rotary drum 20 is supported, so that the stability of the air distribution rotary drum 20 is improved, and the smooth operation of the drying operation is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a water treatment agent extract drying device of aniline is got rid of to industrial waste water, includes that bottom outer wall four corners welds has inlet end (1) of landing leg, its characterized in that, the bottom of inlet end (1) is passed through the bolt fastening and is had air intake plate (4), and inlet end (1) is close to the both sides on top and all welds air-collecting plate (8) that the slope set up, arc (9) have all been welded on the top of air-collecting plate (8), and the inner wall fixed mounting of arc (9) has resistance heating wire (22), the top outer wall welding of inlet end (1) has heat preservation urceolus (12), and heat preservation urceolus (12) are close to the port department welding and have fixed ring board (24), the top joint of fixed ring board (24) has a feed net section of thick bamboo (18), and the bottom of fixed ring board (24) is provided with branch gas rotary drum (20), the inner wall of branch gas rotary drum (20) is opened has evenly distributed's conical inlet port (25), the inner bottom of the gas distribution rotary drum (20) is fixed with blades (15) through screws, the bottom of the charging net barrel (18) is provided with a barrel groove (14), one side of the barrel groove (14) opposite to the charging net barrel (18) is provided with a transverse through net pipe (19), the top end of the heat preservation outer barrel (12) is connected with a cover plate (16) in a clamped mode, the cover plate (16) and one side of the cover plate opposite to the air inlet end (1) are provided with a waste heat recovery mechanism, the outer wall of the circumference at the top end of the charging net barrel (18) is welded with a support plate, pull rings are welded on two sides of the outer wall at the top of the support plate, the outer wall of the circumference at the bottom of the cover plate (16) is bonded with a sealing strip (17), annular grooves are formed in one side of the gas distribution rotary drum (20) opposite to one side of the fixed annular plate (24), and balls (26) distributed equidistantly are connected to the inner wall of the annular grooves in a rolling mode.
2. The device for drying the extract of the water treatment agent for removing the aniline from the industrial wastewater according to claim 1, wherein the outer wall of the bottom end of the gas collecting plate (8) is provided with strip-shaped gas guide grooves (23) which are distributed at equal intervals, the bottom end of the gas inlet end (1) is provided with a slot, and the inner wall of the slot is inserted with the filter screen plate (3).
3. The apparatus for drying an extract from a water treatment agent for removing aniline from industrial wastewater according to claim 1, wherein the cross section of the retainer ring plate (24) is concave.
4. The device for drying the extract of the water treatment agent for removing the aniline from the industrial wastewater according to claim 1, wherein the waste heat recovery mechanism comprises a heat exchange tube (2) fixed at the top end of an air inlet plate (4), the top end of the air inlet plate (4) is provided with a strip-shaped air inlet (6) matched with the path of the heat exchange tube (2), and the outer wall of the heat exchange tube (2) is provided with a spiral groove.
5. The device for drying the extract of the water treatment agent for removing the aniline from the industrial wastewater according to claim 4, wherein the bottom end of the strip-shaped air inlet (6) is provided with an air diffuser (5) communicated with the air inlet, and the air blower (7) is fixed on one side of the air inlet (1) close to the air collecting plate (8) through a bolt.
6. The apparatus for drying an extract from a water treatment agent for removing aniline from industrial wastewater according to claim 4, wherein the heat recovery mechanism further comprises a corrugated hose (13) connected to the cover plate (16), and a steam exhaust pipe (11) is connected to the corrugated hose (13) at a side opposite to the heat exchange pipe (2).
7. The apparatus for drying an extract from a water treatment agent for removing aniline from industrial wastewater according to claim 1, wherein the side of the air-distributing drum (20) opposite to the heat-insulating outer drum (12) is provided with a reinforcing mechanism.
8. The apparatus for drying an extract from a water treatment agent for removing aniline from industrial wastewater according to claim 7, wherein the reinforcing means comprises brackets (10) welded to four corners of the bottom end of the gas-distributing drum (20), and pulleys (21) slidably connected to the inner wall of the heat-insulating outer cylinder (12) are rotatably connected to the ends of the brackets (10) through bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288628.1A CN111397320B (en) | 2020-04-14 | 2020-04-14 | Water treatment agent extract drying device for removing aniline from industrial wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288628.1A CN111397320B (en) | 2020-04-14 | 2020-04-14 | Water treatment agent extract drying device for removing aniline from industrial wastewater |
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| Publication Number | Publication Date |
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| CN111397320A CN111397320A (en) | 2020-07-10 |
| CN111397320B true CN111397320B (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010288628.1A Active CN111397320B (en) | 2020-04-14 | 2020-04-14 | Water treatment agent extract drying device for removing aniline from industrial wastewater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152703A (en) * | 2015-04-10 | 2016-11-23 | 天津华亨科技有限公司 | A kind of fluid bed with rotational structure |
| CN206847250U (en) * | 2017-06-19 | 2018-01-05 | 安康市百盛农业科技有限公司 | A kind of drying device of efficient edible mushroom |
| CN206905429U (en) * | 2017-05-25 | 2018-01-19 | 上海孤蓬机械科技有限公司 | A kind of baking oven with waste-heat recovery device |
| CN109028806A (en) * | 2018-07-23 | 2018-12-18 | 来宝根 | A kind of agricultural drying unit of modified air-flow penetration |
| CN109489400A (en) * | 2018-10-23 | 2019-03-19 | 湖南城头山红薯食品科技有限公司 | It is a kind of to dry equipment for bean vermicelli |
-
2020
- 2020-04-14 CN CN202010288628.1A patent/CN111397320B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152703A (en) * | 2015-04-10 | 2016-11-23 | 天津华亨科技有限公司 | A kind of fluid bed with rotational structure |
| CN206905429U (en) * | 2017-05-25 | 2018-01-19 | 上海孤蓬机械科技有限公司 | A kind of baking oven with waste-heat recovery device |
| CN206847250U (en) * | 2017-06-19 | 2018-01-05 | 安康市百盛农业科技有限公司 | A kind of drying device of efficient edible mushroom |
| CN109028806A (en) * | 2018-07-23 | 2018-12-18 | 来宝根 | A kind of agricultural drying unit of modified air-flow penetration |
| CN109489400A (en) * | 2018-10-23 | 2019-03-19 | 湖南城头山红薯食品科技有限公司 | It is a kind of to dry equipment for bean vermicelli |
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| CN111397320A (en) | 2020-07-10 |
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Effective date of registration: 20211203 Address after: 257300 north of Gangcheng road and east of Gangxi Third Road, dongyinggang Economic Development Zone, Dongying City, Shandong Province Patentee after: SHANDONG DESHI CHEMICAL Co.,Ltd. Address before: 230009 School of chemistry and chemical engineering, Hefei University of technology, No. 193, Tunxi Road, Hefei, Anhui Patentee before: Xia Bangchuan |