CN111664725A - Fog dissipation cooling tower - Google Patents
Fog dissipation cooling tower Download PDFInfo
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- CN111664725A CN111664725A CN201910166074.5A CN201910166074A CN111664725A CN 111664725 A CN111664725 A CN 111664725A CN 201910166074 A CN201910166074 A CN 201910166074A CN 111664725 A CN111664725 A CN 111664725A
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- channel
- air
- cooling tower
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/16—Arrangements for preventing condensation, precipitation or mist formation, outside the cooler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a fog dispersal cooling tower, which comprises: the lower part of the tower body is provided with an air inlet, the upper end of the tower body is provided with an air outlet, and a fan is arranged at the air outlet; a water collecting tank; a circulating hot water spray unit; the fog dissipation packing is arranged between the circulating hot water spraying unit and the air outlet and comprises a first channel and a second channel which are arranged at intervals and are not communicated with each other, the first channel is communicated between the circulating hot water spraying unit and the air outlet, and the second channel extends along the horizontal direction; the shutter is arranged on the side wall of the tower body and communicated with outside dry and cold air, and the shutter is communicated with one end of the second channel; and the air return box and the shutter are arranged at two ends of the second channel in pairs, one end of the air return box is communicated with the second channel, and the other end of the air return box is communicated with the area between the fog dispersal filler and the air outlet. The fog dispersal cooling tower provided by the invention has the advantages that the additional fan is not needed, the flow of dry and cold air in the second channel can be realized by utilizing the original fan of the cooling tower, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of cooling towers, in particular to a fog dissipation cooling tower.
Background
In the industries of petroleum, chemical industry and the like, circulating water cooling systems are widely built. Most circulating water cooling systems employ an open cooling tower as the primary cooling device. The traditional open cooling tower utilizes filler cooling circulating water, circulating hot water from a process device enters a cooling tower spraying system, the filler enters from top to bottom, the filler is generally made of PVC sheets, water enters the filler to form a water film along the PVC sheets, external dry and cold air enters the filler from bottom to top and exchanges heat with the water film, the water film is evaporated and cooled, the air is heated and humidified to form damp and hot air, a fan is arranged at the top of the cooling tower to discharge the damp and hot air out of the tower, and the circulating hot water is cooled to become circulating cold water. Due to the fact that the humidity of the damp and hot air discharged out of the tower is high and the temperature of the damp and hot air is high, white fog is easily generated when the damp and hot air meets the external cold air after the damp and hot air is discharged out of the tower, and adverse effects are caused to people and the environment.
In order to solve the problems, the chinese patent application No. CN201710401446.9 discloses an air-air heat exchange device for cooling tower fog-dispersing condensed water, which is sequentially provided with an axial flow fan, a gradually expanding channel and an air-air heat exchanger along the flowing direction of dry and cold air. The axial flow fan is used for ensuring the flow rate of the dry cooling air and overcoming the resistance of a flow channel; the divergent channel is used for connecting the axial flow fan and the dry and cold air inlet of the air-gas heat exchanger; the air-air heat exchanger consists of a dry cold air flow channel and a wet hot air flow channel and is used for providing a heat exchange area for partition wall heat exchange, enhancing the mixing of dry cold air and wet hot air and promoting the condensation of liquid water in the wet hot air in the cooling tower. The dry and cold air flow channel and the wet air channel of the air-gas heat exchanger are formed by arranging heat exchange plates at intervals, the cross section of the side surface of each heat exchange plate is of a broken line type or a wave type, and a rectangular hole is formed in the upper part of the dry and cold channel.
The main problems of the prior art are that an additional fan is needed, the investment cost is high, and the energy consumption is high; the surface of the filler forms a water film along with the condensation of the water mist, so that the heat transfer efficiency is greatly reduced; after the damp and hot air is cooled, the free water with the equivalent water quantity is not removed and is suspended in the air, and the free water is mixed with the hot dry and cold air again to weaken the fog dissipation effect.
Therefore, a fog dispersal cooling tower is needed, so that condensed water is effectively collected and recovered, the fog dispersal and water saving effects are improved, and extra energy waste is reduced.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a fog dissipation cooling tower, so that the problem of extra energy waste is reduced.
Another object of the present invention is to provide a defogging cooling tower which can improve the capability of capturing and recovering condensed water.
To achieve one or more of the above objects, the present invention provides a defogging cooling tower comprising: the lower part of the tower body is provided with an air inlet, the upper end of the tower body is provided with an air outlet, and a fan is arranged at the air outlet; the water collecting tank is arranged at the bottom of the tower body; a circulating hot water spray unit disposed above the sump; the fog dissipation packing is arranged between the circulating hot water spraying unit and the air outlet and comprises a first channel and a second channel which are arranged at intervals and are not communicated with each other, the first channel is communicated between the circulating hot water spraying unit and the air outlet, and the second channel extends along the horizontal direction; the shutter is arranged on the side wall of the tower body and communicated with outside dry and cold air, and the shutter is communicated with the second channel; and the air return box and the shutter are arranged at two ends of the second channel in pairs, one end of the air return box is communicated with the second channel, and the other end of the air return box is communicated with the area between the fog dispersal filler and the air outlet.
Further, in the above technical scheme, the fog dispersal cooling tower comprises a plurality of pairs of shutters and air return boxes.
Further, in the above technical solution, the plurality of pairs of louvers and the air return box are arranged in such a way that the louvers and the air return box are distributed at intervals at one end of the second channel.
Further, in the above technical solution, the interval between adjacent louvers is 2 m.
Further, among the above-mentioned technical scheme, the first passageway and the second passageway of fog dispersal filler are arranged by a plurality of heat exchanger fins and are formed, and the heat exchanger fin is the buckled plate, and it includes: a plurality of baffling surfaces; and the liquid collecting plate is arranged at the wave crest of the heat exchange plate in the first channel, and the liquid collecting plate extends upwards from the baffling surface.
Further, in the above technical solution, the heat exchanger plate further includes: and the return plate is arranged at the wave crest of the heat exchange plate in the first channel, and the return plate extends downwards from the baffle lower surface.
Further, in the technical scheme, the width of the liquid collecting plate is 5mm, and the width of the reflux plate is 5 mm.
Further, in the above technical solution, the deflection angle between two adjacent baffling surfaces is 15 °.
Further, in the above technical solution, the width of the first channel is twice the width of the second channel.
Further, in the above technical solution, the thickness of the heat exchange fin is 0.4mm, the width of the first channel is 2cm, and the width of the second channel is 1 cm.
Compared with the prior art, the invention has the following beneficial effects:
1. through the first passageway and the second passageway that the filler that disappears communicates each other to and shutter and the return-air case that set up in pairs, need not to set up extra fan, utilize the original fan of cooling tower alright realize the flow of dry and cold air in the second passageway, reduce the energy consumption.
2. Set up many to shutter and return-air case to interval distribution makes the two-way flow of dry and cold air in the second passageway, and the heat transfer is more even, and the defogging effect is better.
3. The heat exchange plate is provided with the liquid collecting plate and the reflux plate, so that the capability of collecting and recovering condensed water is improved, and the fog dissipation and water saving effects are improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to make the technical means implementable in accordance with the contents of the description, and to make the above and other objects, technical features, and advantages of the present invention more comprehensible, one or more preferred embodiments are described below in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a defogging cooling tower according to an embodiment of the present invention.
Fig. 2 is another schematic structural diagram of the defogging cooling tower according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a defogging filler according to an embodiment of the present invention.
Description of the main reference numerals:
1-tower body, 11-water collecting tank, 12-air inlet, 13-air outlet, 131-fan, 132-air duct, 141-water spraying filler, 142-first sprayer, 142 a-sprayer main pipe, 142 b-spray head, 15-fog-removing filler, 150-heat exchange sheet, 150 a-baffling surface, 150 b-liquid collecting plate, 150 c-reflux plate, 151-first channel, 152-second channel, 161-louver and 162-air returning box.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Spatially relative terms, such as "below," "lower," "upper," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the object in use or operation in addition to the orientation depicted in the figures. For example, if the items in the figures are turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The article may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
In this document, the terms "first", "second", etc. are used to distinguish two different elements or portions, and are not used to define a particular position or relative relationship. In other words, the terms "first," "second," and the like may also be interchanged with one another in some embodiments.
As shown in fig. 1 and 2, the fog dispersal cooling tower according to one or more embodiments of the present invention has a tower body 1, a water collection tank 11 is provided at the bottom end of the tower body 1, an air inlet 12 is provided at the lower part of the tower body, and an air outlet 13 is provided at the upper end of the tower body. Illustratively, a fan 131 is arranged at the air outlet 13, and an air duct 132 for guiding air is arranged outside the fan 131. A circulating hot water spraying unit is arranged above the water collecting tank 11 and comprises a water spraying filler 141 and a first sprayer 142. Illustratively, the first sprayer 142 includes a sprayer header 142a and spray heads 142b distributed on the sprayer header 142 a. Illustratively, the packing 141 is formed by an arrangement of multiple layers of PVC sheets. And a fog dispersal filler 15 is arranged above the circulating hot water spraying unit. Dry and cold air enters from an air inlet 12 of the tower body 1, sequentially passes through the circulating hot water spraying unit and the fog dissipation filler upwards, and is discharged from an air outlet 13.
Further, as shown in connection with FIG. 3, in one or more exemplary embodiments of the invention, the defogging filler 15 is comprised of heat exchanger fins 150. The heat exchange plates 150 form a first channel 151 and a second channel 152 which are arranged at intervals and are not communicated with each other, the hot and humid air can flow upwards along the first channel 151, and the cold and dry air can flow horizontally along the second channel 152. The second passage 152 is provided at both ends thereof with louvers 161 and return air boxes 162 arranged in pairs, and the louvers 161 and the return air boxes 162 are arranged in a staggered arrangement at one end of the second passage 152. One end of the return air box 162 communicates with the second passage 152, and the other end communicates with the area between the defogging filler 15 and the air outlet 13. The outside dry and cold air can enter the second channel 152 through the louvers 161, the dry and cold air in the second channel 152 and the hot and humid air in the first channel 151 undergo partition heat exchange through the heat exchange fins 150, and the hot dry and cold air enters the air return box 162 through the second channel 152 and is turned to enter the area between the fog dispersal filler 15 and the air outlet 13 through the air return box 162. The hot dry cool air and the cold wet hot air are mixed in the area and then discharged out of the tower through the fan 131. Because shutter 161 sets up with return air case 162 in turn, the dry and cold air is along two-way horizontal flow in second passageway 152 for the heat transfer of dry and cold air and damp and hot air is more even, and the effect of fog dispersal is better to the condensate.
Referring to fig. 3, in one or more embodiments of the invention, the heat exchanger fins 150 of the defogging filler 15 are corrugated plates having a plurality of baffling surfaces 150 a. Illustratively, the corrugations of the plate 150 are W-shaped. The hot and humid air is cooled by being deflected upward in the first channels 151 of the folded type. Illustratively, the baffle surfaces 150a in the first channels 151 extend outwardly at the peaks of the plates 150, and the baffle surfaces 150a extend upwardly to form a header plate 150b and downwardly to form a return plate 150 c. It should be understood that the baffle surfaces 150a shown in fig. 3 of the present invention extend upwardly and downwardly at the peaks of the plates 150 to form a liquid collection plate 150b and a return plate 150c, respectively, but the present invention is not limited thereto. In other exemplary embodiments, the baffle surface 150a may extend only upward to form the liquid collection plate 150b, and not downward. In another exemplary embodiment, the baffle surfaces 150a extend outwardly at both the peaks and valleys of the plate 150 to form a liquid collection or return plate, although the invention is not limited thereto. Preferably, but not limitatively, the heat exchanger fins 150 may be disposed at a slight inclination so that the liquid can be timely discharged after being collected by the liquid collecting plate 150 b.
Preferably, but not limitatively, in one or more embodiments of the invention, the plate 150 has a thickness of about 0.4 mm. Preferably, but not limitatively, the heat exchanger plate 150 is made of thermally conductive plastic. Preferably, but not limitatively, the spacing between the two plates 150 forming the first channels 151 is about 2cm and the spacing between the two plates 150 forming the second channels 152 is about 1 cm. Preferably, but not limitatively, the width of the first channel 151 is about twice the width of the second channel 152. Preferably, but not limitatively, the angle between the respective baffle surfaces 150a of the plates 150 is about 15 °. Preferably, but not limitatively, the liquid collection plate 150b has a width of about 5mm and the return plate 150c has a width of about 5 mm.
According to one or more embodiments of the invention, referring to fig. 1 to 3, the working process of the fog dispersal cooling tower of the invention is as follows:
the circulating hot water is distributed to the spray head 142b through the spray head main pipe 142a of the first spray head 142, and is uniformly sprayed on the water spraying filler 141 through the spray head 142b, and the sprayed hot water forms a film on the PVC sheet of the water spraying filler 141. Dry and cold air outside the tower enters the water spraying filler 141 upwards from the air inlet 12 and is in countercurrent contact with spraying hot water, the spraying hot water is evaporated and cooled to become cold water, the dry and cold air is heated and humidified to become damp and hot air, and the damp and hot air continuously rises to enter the first channel 151 of the fog dispersal filler 15. The external dry and cold air enters the second channel 152 of the defogging filler 15 through the louvers 161. In the fog dispersal filler 15, the damp and hot air in the first channel 151 and the dry and cold air in the second channel 152 carry out partition wall heat exchange, the cooled damp and hot air is condensed into a plurality of small droplets, when the damp and hot air hits the deflection surface 150a, the small droplets are captured to form a liquid film, and the liquid film is collected to the liquid collecting plate 150b along the deflection surface 150a and is led out in time; when the hot and humid air meets the backflow plate 150c, a rotational flow is formed, and liquid drops in the hot and humid air are captured by the centrifugal force and can be collected and guided out by the liquid collection plate 150 b. The cold and hot humid air enters the area between the defogging fillers 15 and the air outlet 13 upwards, the hot and dry cold air enters the air return box 162 along the second channel 152, and turns in the air return box 162 to enter the area between the defogging fillers 15 and the air outlet 13 upwards, and the hot and dry cold air and the cold and hot humid air are mixed in the area and then are discharged from the air outlet 13.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments shall fall within the scope of the present invention.
Claims (10)
1. A fog dispersal cooling tower, comprising:
the lower part of the tower body is provided with an air inlet, the upper end of the tower body is provided with an air outlet, and a fan is arranged at the air outlet;
the water collecting tank is arranged at the bottom of the tower body;
a circulating hot water spray unit disposed above the sump;
the fog dissipation packing is arranged between the circulating hot water spraying unit and the air outlet and comprises a first channel and a second channel which are arranged at intervals and are not communicated with each other, the first channel is communicated between the circulating hot water spraying unit and the air outlet, and the second channel extends in the horizontal direction;
the shutter is arranged on the side wall of the tower body and communicated with outside dry and cold air, and the shutter is communicated with the second channel; and
and the air return box and the shutter are arranged at two ends of the second channel in pairs, one end of the air return box is communicated with the second channel, and the other end of the air return box is communicated with the area between the fog dispersal filler and the air outlet.
2. The fog dispersal cooling tower of claim 1, including a plurality of pairs of said louvers and said return air box.
3. The fog dispersal cooling tower of claim 2 wherein said plurality of pairs of louvers are arranged with a return air box, said louvers being spaced from said return air box at one end of said second passageway.
4. The defogging cooling tower according to claim 3, wherein a spacing between adjacent louvers is 2 m.
5. The defogging cooling tower according to claim 1, wherein said first and second channels of said defogging filler material are formed by an arrangement of a plurality of heat exchanger sheets, said heat exchanger sheets being corrugated sheets comprising:
a plurality of baffling surfaces; and
and the liquid collecting plate is arranged at the wave crest of the heat exchange plate in the first channel, and the liquid collecting plate extends upwards from the baffling surface.
6. The defogging cooling tower according to claim 5, wherein said heat exchanger plate further comprises:
and the return plate is arranged at the wave crest of the heat exchange plate in the first channel, and the return plate extends downwards from the baffling lower surface.
7. The defogging cooling tower according to claim 6, wherein the width of the liquid collection plate is 5mm and the width of the liquid return plate is 5 mm.
8. The defogging cooling tower according to claim 5, wherein a deflection angle between two adjacent baffling surfaces is 15 °.
9. The defogging cooling tower according to any one of claims 1 to 8, wherein the width of the first channel is twice the width of the second channel.
10. The defogging cooling tower according to any one of claims 5 to 8, wherein the thickness of the heat exchange sheet is 0.4mm, the width of the first channel is 2cm, and the width of the second channel is 1 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910166074.5A CN111664725B (en) | 2019-03-06 | 2019-03-06 | Fog dissipation cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910166074.5A CN111664725B (en) | 2019-03-06 | 2019-03-06 | Fog dissipation cooling tower |
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| Publication Number | Publication Date |
|---|---|
| CN111664725A true CN111664725A (en) | 2020-09-15 |
| CN111664725B CN111664725B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910166074.5A Active CN111664725B (en) | 2019-03-06 | 2019-03-06 | Fog dissipation cooling tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532151A (en) * | 2021-07-22 | 2021-10-22 | 江西方舟流体科技有限公司 | Fog dispersal closed cooling tower |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219685A (en) * | 1995-02-17 | 1996-08-30 | Mitsubishi Heavy Ind Ltd | Cross flow type gas liquid contact type cooling tower |
| CN1589387A (en) * | 2001-10-11 | 2005-03-02 | 马利冷却技术公司 | Air-to-air atmospheric exchanger for condensing cooling tower effluent |
| CN203785526U (en) * | 2014-01-26 | 2014-08-20 | 德州贝诺风力机械设备有限公司 | Fog dissipating and water collecting device of cooling tower |
| CN104864737A (en) * | 2015-06-04 | 2015-08-26 | 广州览讯科技开发有限公司 | Subarea air valve counter flow cooling tower |
| CN206300515U (en) * | 2016-12-14 | 2017-07-04 | 溧阳中冷冷却系统有限公司 | One kind water saving fog dispersal cooling tower |
| CN107179009A (en) * | 2017-05-31 | 2017-09-19 | 西安交通大学 | A kind of gas-gas heat exchange device for the solidifying water that dispersed fog for cooling tower |
| CN206638055U (en) * | 2017-03-31 | 2017-11-14 | 山东格瑞德集团有限公司 | Dry and wet composite water-saving fog dispersal cooling tower |
| CN108716863A (en) * | 2018-06-09 | 2018-10-30 | 山东格瑞德集团有限公司 | A kind of cooling tower fog dispersal sheet material and the module that disperses fog |
-
2019
- 2019-03-06 CN CN201910166074.5A patent/CN111664725B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219685A (en) * | 1995-02-17 | 1996-08-30 | Mitsubishi Heavy Ind Ltd | Cross flow type gas liquid contact type cooling tower |
| CN1589387A (en) * | 2001-10-11 | 2005-03-02 | 马利冷却技术公司 | Air-to-air atmospheric exchanger for condensing cooling tower effluent |
| CN203785526U (en) * | 2014-01-26 | 2014-08-20 | 德州贝诺风力机械设备有限公司 | Fog dissipating and water collecting device of cooling tower |
| CN104864737A (en) * | 2015-06-04 | 2015-08-26 | 广州览讯科技开发有限公司 | Subarea air valve counter flow cooling tower |
| CN206300515U (en) * | 2016-12-14 | 2017-07-04 | 溧阳中冷冷却系统有限公司 | One kind water saving fog dispersal cooling tower |
| CN206638055U (en) * | 2017-03-31 | 2017-11-14 | 山东格瑞德集团有限公司 | Dry and wet composite water-saving fog dispersal cooling tower |
| CN107179009A (en) * | 2017-05-31 | 2017-09-19 | 西安交通大学 | A kind of gas-gas heat exchange device for the solidifying water that dispersed fog for cooling tower |
| CN108716863A (en) * | 2018-06-09 | 2018-10-30 | 山东格瑞德集团有限公司 | A kind of cooling tower fog dispersal sheet material and the module that disperses fog |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532151A (en) * | 2021-07-22 | 2021-10-22 | 江西方舟流体科技有限公司 | Fog dispersal closed cooling tower |
| CN113532151B (en) * | 2021-07-22 | 2022-06-07 | 江西方舟流体科技有限公司 | Fog dispersal closed cooling tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111664725B (en) | 2021-10-08 |
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Effective date of registration: 20230517 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec (Dalian) Petrochemical Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |
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