CN207066203U - A kind of band-tube type air preheater - Google Patents
A kind of band-tube type air preheater Download PDFInfo
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- CN207066203U CN207066203U CN201720890411.1U CN201720890411U CN207066203U CN 207066203 U CN207066203 U CN 207066203U CN 201720890411 U CN201720890411 U CN 201720890411U CN 207066203 U CN207066203 U CN 207066203U
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- heat exchanger
- exchanger plates
- air preheater
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- tube type
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Abstract
This application discloses a kind of band-tube type air preheater, it includes housing and the heat exchanger plates pipe of multiple flat, housing includes two installing plates being oppositely arranged in a first direction, the both ends of each heat exchanger plates pipe are sealingly connected to the corresponding air hole on described two installing plates respectively, the housing also includes two sides being oppositely arranged in the second direction vertical with the first direction, smoke ventilator is offered on the side, wherein, the multiple heat exchanger plates pipe arrangement is so that the length direction of the cross section of wherein at least one heat exchanger plates pipe is at an angle of α with the second direction, 0 ° of 60 ° of ＜ α ＜.According to the utility model, band-tube type air preheater advantageously strengthens the disturbance of flue gas, so as to provide heat exchange efficiency by changing the arrangement mode of heat exchanger plates pipe.
Description
Technical field
The utility model relates generally to the industry waste heat of flue gas of heating furnace recovery air preheater such as petrochemical industry, electric power, tool
It is related to a kind of band-tube type air preheater body.
Background technology
Tube-sheet heat exchanger is improving heat exchange effect relative to traditional pipe heat exchanger, plate type heat exchanger, heat exchange of heat pipe
Rate, reduction preheater volume and weight, Modular Structure Design are easy on the basis of later maintenance operation, reduce cold medium
(such as air) had both improved the thermal efficiency of heating furnace, reduced again to environment in the leakage of thermal medium (such as flue gas) side
Pollution.
In order to further improve the heat exchange efficiency of tube-sheet heat exchanger, plate pipe has been proposed in inventor of the present utility model
Formula heat exchanger, i.e., using the tube-sheet heat exchanger of the heat exchanger tube (hereinafter referred to as " heat exchanger plates pipe ") with flat pattern cross section
(referring to CN104101235A, CN204043453U and CN204924005U).
For example, with reference to Fig. 1, existing band-tube type heat exchanger includes housing 1 and the multiple heat exchanger plates pipes being arranged in housing 1
2.As shown in figure 1, multiple heat exchanger plates pipes 2 have the cross section of flat pattern, and it is being in battle array in its axial plane
Row arrangement so that the direction that the length direction of its cross section passes in and out parallel to flue gas.
However, existing tube-sheet heat exchanger, which is not fully met, uses needs.Especially for for petrochemical industry, electric power etc.
The waste heat of flue gas of heating furnace recovery air preheater of industry, it is also desirable that further improving heat exchange efficiency and reducing air
Preheater volume.
Utility model content
The purpose of this utility model is to provide a kind of band-tube type air preheater, its arrangement side by improving heat exchanger plates pipe
Formula, further strengthen flue gas disturbance, so as to overcome above mentioned problem of the prior art.
According to the utility model embodiment, there is provided a kind of band-tube type air preheater, it includes：Housing, it is included in
Two installing plates being oppositely arranged on first direction, multiple air holes are respectively formed with the installing plate, the housing is also
It is included in two sides being oppositely arranged in the second direction vertical with the first direction, offering flue gas on the side leads to
Hole；With multiple heat exchanger plates pipes, each there is the cross section of flat pattern, the both ends of each heat exchanger plates pipe are sealingly connected to respectively
Corresponding air hole on described two installing plates, wherein, the multiple heat exchanger plates pipe arrangement is so that wherein at least one
The length direction of the cross section of heat exchanger plates pipe is at an angle of α, 0 ° of ＜ α≤60 ° with the second direction.It is preferred that the angle [alpha]≤
30°。
The technical principle of the present invention is based on the field coordination principle in heat transfer enhancement technology.Field coordination principle points out that convection current is changed
The intensity of heat depends not only on the temperature difference between fluid and solid wall surface, flowing velocity and fluid ermal physics and transport property, and
And the vector angle size between fluid velocity vectors and heat flow is additionally depended on, as the speed of flow of flue gas is sweared in the present invention
The angle of amount and the temperature gradient vector of flue gas and air., can be by improving fluid on the premise of physical properties of fluids is not changed
Flowing velocity augmentation of heat transfer, but more effectively measure is to reduce the angle between flowing velocity vector and temperature gradient vector.
In the present invention, heat exchanger plates pipe is in tilted layout so that also change therewith perpendicular to the temperature gradient vector direction in heat exchanger plates tube wall face
Become, temperature gradient vector direction and the angle of the medium velocity direction vector outside heat exchanger plates pipe reduce, and the coefficient of heat transfer improves.In phase
With under Reynolds number, the heat exchange factor is reduced afterwards as the increase at heat exchanger plates pipe angle of inclination first increases, and the coefficient of heat transfer reduces in increase
During be all linear relationship, maximum is reached at 60 ° of heat exchanger plates pipe angle of inclination (coefficient of heat transfer improves 15%).Simultaneously
Resistance coefficient increases with the increase at heat exchanger plates pipe angle of inclination, and during increase, the pressure loss (shows as gas pressure
Drop) be exponential relationship, during 60 ° of heat exchanger plates pipe angle of inclination, the pressure loss doubles or so.30 ° of heat exchanger plates pipe angle of inclination
When, the fume side coefficient of heat transfer improves about 8%, pressure drop increase about 25% (single module numerical value rises to 125Pa from 100Pa).From work
From the point of view of journey point of view of practicability, it is acceptable that angle of inclination, which is less than or equal to 60 °, is preferably less than or equal to 30 °.
In some instances, the multiple heat exchanger plates pipe arrangement is to cause the cross section of wherein at least another heat exchanger plates pipe
Length direction and the second direction be at an angle of β, β ≠ α.The angle beta can be identical with the angle [alpha] size, direction phase
Instead.Or angle beta=0.
It is preferred that the multiple heat exchanger plates pipe arrangement is multiple row, each row are included along perpendicular to first and second side
To third direction arrange several heat exchanger plates pipes, and the length direction of the cross section of the heat exchanger plates pipe in each row with it is described
Second direction angulation is identical.
It is preferred that along second direction any two heat exchanger plates pipe adjacent to each other with the length direction of its cross section
The end to end mode in end is arranged.
It is preferred that it is smaller than or equal to described along between second direction any two heat exchanger plates pipe adjacent to each other
The width of cross section.
In some instances, the angular dimension of at least two adjacent columns is identical, in the opposite direction.
In some instances, the equal size of the angle of each two adjacent column is identical, in the opposite direction.
It is preferred that the multiple heat exchanger plates pipe is axially parallel to the first direction.
Alternatively, the cross section of the heat exchanger plates pipe is enclosed and formed by two relative long sides and relative two short sides,
Two long sides are straight line and are parallel to each other that two short sides are the combination of straight line, curve or straight line and curve.
According to the band-tube type air preheater of the utility model embodiment by changing the arrangement mode of heat exchanger plates pipe, favorably
The disturbance of flue gas is strengthened on ground, so as to provide heat exchange efficiency.In addition, the raising of heat exchange efficiency, it is allowed to which people reduce as needed
The volume of air preheater.
Brief description of the drawings
It is of the present utility model by reading the detailed description made to non-limiting example made with reference to the following drawings
Other features, objects and advantages will become more apparent upon：
Fig. 1 shows that heat exchanger plates pipe is in the plane perpendicular to heat exchanger plates pipe axial direction in existing band-tube type air preheater
Arrangement；
Fig. 2 shows that heat exchanger plates pipe is perpendicular in the band-tube type air preheater according to the utility model embodiment one
Arrangement in the plane in one direction；
Fig. 3 is the schematic cross sectional view perpendicular to second direction of band-tube type air preheater shown in Fig. 2；
Fig. 4 shows that heat exchanger plates pipe is perpendicular in the band-tube type air preheater according to the utility model embodiment two
Arrangement in the plane in one direction；And
Fig. 5 shows that heat exchanger plates pipe is perpendicular in the band-tube type air preheater according to the utility model embodiment three
Arrangement in the plane in one direction.
Embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
It is easy to describe, the part related to invention is illustrate only in accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
First, reference picture 2 and Fig. 3 introductions be according to the band-tube type air preheater 100 of the utility model embodiment one, wherein
Fig. 2 shows arrangement of the heat exchanger plates pipe in the plane perpendicular to first direction, and Fig. 3 is hanging down for band-tube type air preheater 100
Directly in the schematic cross sectional view of second direction.
As illustrated, band-tube type air preheater 100 includes the multiple heat exchanger plates pipes of housing 110 and setting in the housing
120.Housing 110 can have such as substantially box shape.As shown in figure 3, housing 110 includes relative on x in a first direction set
Two installing plates 110a, the 110a put, multiple air hole (not shown) are respectively formed with installing plate.Each heat exchanger plates pipe
120 both ends are sealingly connected to two installing plates 110a, 110a corresponding air hole respectively, lead to so as to form air flow
Road.As indicated in Figure 3, air enters heat exchanger plates pipe 120 from side installing plate 110a, flows through heat exchanger plates pipe 120 from another
Side installing plate 110a flows out.As shown in Fig. 2 housing 110 also includes relative on the second direction y perpendicular to first direction x set
Two sides 110b, the 110b put, offer smoke ventilator (not shown) thereon.Between heat exchanger plates pipe 120 and heat exchanger plates pipe
Space between 120 and housing 110 forms smoke flow channels 130.
Heat exchanger plates pipe 120 has the cross section of flat pattern.The cross section of the flat pattern can be long by relative two
Side and relative two short sides are enclosed and formed, and are formed as rectangle or near rectangular shape.Two long sides is can with straight line and mutually
Parallel, two short sides can be the combination of straight line, curve or straight line and curve.Such as in the example in figure 2, two short sides
It is made up of curve.
It is preferred that multiple heat exchanger plates pipes 120 are axially parallel to first direction x.
In the band-tube type air preheater 100 according to the present embodiment, as shown in Fig. 2 multiple heat exchanger plates pipes 120 include changing
Hot plate pipe 120a and heat exchanger plates pipe 120b, heat exchanger plates pipe 120a are located at the top side that flue gas enters a row heat exchanger plates pipe of side,
The length direction for being arranged as its cross section deviates second direction y upward in face of the direction that flue gas enters, i.e., with second direction y angulations
Spend α, 0 ° of 60 ° of ＜ α ＜；Heat exchanger plates pipe 120b is located at flue gas into the lower side of a row heat exchanger plates pipe of side, and it is horizontal to be arranged as it
The length direction in section is directed downward deviation second direction y in face of what flue gas entered, i.e., is at an angle of β with second direction y, here angle
Spend β and angle [alpha] is equal in magnitude, and it is in opposite direction.Other heat exchanger plates pipes are arranged so that the length direction of cross section parallel to
Two direction y.
Due to the side 110b for offering smoke ventilator of housing 110 be on second direction y it is positioned opposite, so cigarette
Gas passes in and out band-tube type air preheater 100 along second direction y.The length direction that cross section is arranged as when heat exchanger plates pipe 120 is put down
For row when second direction y, the smoke flow channels 130 of formation are parallel to second direction y, so that enter outgoing direction parallel to flue gas,
Therefore it is minimum to the resistance of flue gas.
However, it is found by the inventors that the arrangement by suitably changing heat exchanger plates pipe 120, make the length direction of cross section with
Second direction y is angled, and water conservancy diversion can be carried out to flue gas, or introduces appropriate flue gas disturbance, and this can more be helped
In raising heat exchange efficiency.
In the present embodiment, heat exchanger plates pipe 120a and 120b is upwardly and downwardly deflected respectively, distinguishes angulation with second direction y
α and angle beta are spent, due to the flue gas of marginal portion being brought in the smoke flow channels 130 formed between heat exchanger plates pipe 120.
The smoke flow channels between heat exchanger plates pipe 120 and housing 110 are flowed into compared to flue gas, this helps to increase flue gas and heat exchange
The contact of plate pipe 120, improve heat exchange efficiency.In addition, this contributes to the casing surface temperature of reduction air preheater 100.
According to the band-tube type air preheater of the utility model embodiment in the case where not increasing air preheater volume
Improve heat exchange efficiency；From another perspective, this permission people further reduces the volume of air preheater as needed.
Next, reference picture 4 introduces the band-tube type air preheater 200 according to the utility model embodiment two.Band-tube type
Air preheater 200 has the structure substantially the same with the air preheater 100 according to the utility model embodiment one, different
Part is the arrangement of heat exchanger plates pipe.
Fig. 4 shows arrangement of the heat exchanger plates pipe in the plane perpendicular to first direction x in air preheater 200.Such as figure
Shown, air preheater 200 includes housing 210 and the multiple heat exchanger plates pipes 220 being arranged in housing 210, the plurality of heat exchanger plates
Pipe 220 arrangement be multiple row, it is each row include edge perpendicular to first and second direction third direction z arrangement several
Heat exchanger plates pipe, and the length direction of the cross section of the heat exchanger plates pipe in each row is identical with second direction angulation.
In the air preheater 200 according to embodiment two, adjacent two row include heat exchanger plates pipe 220a and heat exchange respectively
Plate pipe 220b.As shown in figure 4, heat exchanger plates pipe 220a is arranged as the length direction of its cross section and second direction y is at an angle of α, and
Heat exchanger plates pipe 220b is arranged as the length direction of its cross section and second direction y is at an angle of β, and angle beta is equal in magnitude with angle [alpha],
It is and in opposite direction.It can be seen that the equal size phase of the angle of the heat exchanger plates pipe of each two adjacent column in air preheater 200
Together, in the opposite direction.
As indicated in fig. 4, in air preheater 200, the heat exchanger plates pipe 220a and 220b as above to arrange is in housing 210
Flue gas approaching side side 210b and flue gas leave the smoke flow channels 230 that dipping and heaving is formd between the 210b of side side.
So the smoke flow channels of dipping and heaving can cause more disturbances of flue gas during flow of flue gas, and the disturbance can have
Beneficial to flue gas, the heat convection of inside and flue gas and the conduction of heat exchanger plates pipe surface exchange heat in itself, so as to improve air preheater
Heat exchange efficiency.Improve the volume that heat exchange efficiency allows people further to reduce air preheater as needed.Fig. 5 shows root
According to the band-tube type air preheater of the utility model embodiment three.Band-tube type air preheater 300 have with according to this practicality newly
The air preheater 100 of type embodiment one and according to the substantially the same structure of the air preheater 200 of embodiment two, difference
It is in the arrangement of heat exchanger plates pipe.
As illustrated, band-tube type air preheater 300 includes housing 310 and the multiple heat exchanger plates being arranged in housing 310
Pipe 320.Multiple arrangements of heat exchanger plates pipe 320 are multiple row in air preheater 300, and each row are included along perpendicular to first He
Several heat exchanger plates pipes of the third direction z arrangements of second direction, and the length side of the cross section of the heat exchanger plates pipe in each row
To identical with second direction angulation.
In the air preheater 300 according to embodiment three, it is the multiple row sequentially respectively comprising heat exchanger plates pipe 320a,
Heat exchanger plates pipe 320b and heat exchanger plates pipe 320c.As shown in figure 5, heat exchanger plates pipe 320a is arranged as the length direction and of its cross section
Two direction y are at an angle of α；Heat exchanger plates pipe 320b is arranged as the length direction of its cross section and second direction y and is at an angle of β, angle beta with
Angle [alpha] is equal in magnitude, and in opposite direction；And heat exchanger plates pipe 320c is arranged as the length direction of its cross section and second direction is put down
OK.So, the angular dimension of the heat exchanger plates pipe 320a and heat exchanger plates pipe 320b adjacent columns formed is identical, in the opposite direction.
Similar to air preheater 200, the heat exchanger plates pipe 320 as above arranged in air preheater 300 (320a, 320b,
The cigarette of dipping and heaving 320c) is formd between the flue gas approaching side side 310b and flue gas of housing 310 leave side side 310b
Flow of air passage 330.So the smoke flow channels of dipping and heaving can cause the more of flue gas to disturb during flow of flue gas
Dynamic, the disturbance can be advantageous to flue gas, and the heat convection of inside and flue gas and the conduction of heat exchanger plates pipe surface exchange heat in itself, from
And improve the heat exchange efficiency of air preheater.Improving heat exchange efficiency allows people further to reduce air preheater as needed
Volume.
Compared to air preheater 200, pass through the heat exchanger plates of the more different arrangement modes of combination in air preheater 300
Pipe, the smoke flow channels in more different paths can be formed, there is provided different flue gas disturbances, to adapt to different applied fields
Close.
In addition, as shown in Figures 4 and 5, multiple heat exchanger plates pipes no matter its cross-section lengths direction and the second reverse y angle such as
What, they are advantageously arranged such that any two heat exchanger plates pipe adjacent to each other in a second direction with the length direction of its cross section
On the end to end mode in end arrange.So be advantageous to Manzo flue gas being limited between upper and lower two layers of heat exchanger plates pipe
Between in (smoke flow channels), while flue gas disturbance is increased, the size of control disturbance and the flow resistance of flue gas.
The spacing between heat exchanger plates pipe adjacent to each other is one of principal element for influenceing the coefficient of heat transfer in a second direction.When
During variable angle between heat exchanger plates pipe, if kept, the geometrical center to center between two pipes is constant, and the spacing between two pipes must
So change with the variable angle between two pipes.The flue gas flowed out from the runner between heat exchanger plates pipe is by heat exchanger plates pipe inclination angle shadow
Ring, flow direction and non-parallel to adjacent heat exchanger plates pipe, but have certain angle with adjacent heat exchanger plates pipe, flue gas is with inclined
When direction flows to one end of the cross section of heat exchanger plates pipe, flue gas can be divided into two parts, and a part continues on current flue gas
Flow channel advances, and another part is flowed into another smoke flow channels at the spacing of adjacent heat exchanger plates pipe.In runner
Direction of the flue gas along vertical walls increase or decrease successively, cause flue gas skewness in runner, flue gas is in runner point
Cloth is uneven to reduce heat exchange efficiency.When spacing is larger, the distribution of this flue gas is uneven particularly evident, heat exchange efficiency reduce compared with
More, when spacing is smaller, flue gas distribution is uneven also to be reduced and reduction with spacing.Present inventor is by calculating and experimental study
In a second direction between heat exchanger plates pipe adjacent to each other interval S exchange the thermal efficiency influence, and propose the interval S should be less than or
Person is equal to the width T, i.e. S≤T of the cross section of heat exchanger plates pipe.It is preferred that the interval S is less than 15mm；It is further preferred that 5mm≤S≤
10mm。
It should be understood that although the band-tube type air that the utility model embodiment one to three is introduced above by reference to accompanying drawing is pre-
In hot device, angle beta is equal in magnitude with angle [alpha], and in opposite direction, but what this was merely exemplary, those skilled in the art can
To be selected differently from any suitable angle beta of angle [alpha] as needed.
In addition, although in introducing the band-tube type air preheater of the utility model embodiment one to three above by reference to accompanying drawing,
Heat exchanger plates pipe of the cross-section lengths direction with second direction into different angle (including zero degree) is combined with, but the utility model is simultaneously
Not limited to this, as long as applying cross-section lengths direction and second party in the air preheater according to the utility model embodiment
Increase flue gas disturbance to not parallel heat exchanger plates pipe, improve heat exchange efficiency.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from the inventive concept, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (13)
1. a kind of band-tube type air preheater, including:
Housing, it includes two installing plates being oppositely arranged in a first direction, multiple skies is respectively formed with the installing plate
Vent hole, the housing also includes two sides being oppositely arranged in the second direction vertical with the first direction, described
Smoke ventilator is offered on side；With
Multiple heat exchanger plates pipes, each there is the cross section of flat pattern, the both ends of each heat exchanger plates pipe are sealingly connected to respectively
Corresponding air hole on described two installing plates,
Characterized in that, the multiple heat exchanger plates pipe arrangement is so that the length side of the cross section of wherein at least one heat exchanger plates pipe
α, 0 ° of ＜ α≤60 ° are at an angle of to the second direction.
2. band-tube type air preheater as claimed in claim 1, it is characterised in that angle [alpha]≤30 °.
3. band-tube type air preheater as claimed in claim 1, it is characterised in that the multiple heat exchanger plates pipe arrangement is to cause
Wherein at least the length direction of the cross section of another heat exchanger plates pipe is at an angle of β, β ≠ α with the second direction.
4. band-tube type air preheater as claimed in claim 3, it is characterised in that the angle beta and the angle [alpha] size phase
Together, in the opposite direction.
5. band-tube type air preheater as claimed in claim 3, it is characterised in that angle beta=0.
6. band-tube type air preheater as claimed in claim 3, it is characterised in that the multiple heat exchanger plates pipe arrangement is multiple
Row, each row include several heat exchanger plates pipes arranged along the third direction perpendicular to first and second direction, and each
The length direction of the cross section of heat exchanger plates pipe in row is identical with the second direction angulation.
7. band-tube type air preheater as claimed in claim 6, it is characterised in that appoint along the second direction is adjacent to each other
Two heat exchanger plates pipes of meaning are arranged in a manner of the end on the length direction of its cross section is end to end.
8. band-tube type air preheater as claimed in claim 6, it is characterised in that appoint along the second direction is adjacent to each other
Meaning two heat exchanger plates pipes between be smaller than or the width equal to the cross section.
9. band-tube type air preheater as claimed in claim 7, it is characterised in that adjacent to each other along the second direction
Between any two heat exchanger plates pipe be smaller than or the width equal to the cross section.
10. band-tube type air preheater as claimed in claim 7, it is characterised in that the angle of at least two adjacent row
It is identical to spend size, in the opposite direction.
11. band-tube type air preheater as claimed in claim 7, it is characterised in that the angle of each two adjacent column is equal
Size is identical, in the opposite direction.
12. the band-tube type air preheater as any one of claim 1-11, it is characterised in that the multiple heat exchanger plates
Pipe is axially parallel to the first direction.
13. the band-tube type air preheater as any one of claim 1-7, it is characterised in that the heat exchanger plates pipe
Cross section is enclosed and formed by two relative long sides and relative two short sides, and two long sides are straight line and are parallel to each other, two
Short side is the combination of straight line, curve or straight line and curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890411.1U CN207066203U (en) | 2017-07-21 | 2017-07-21 | A kind of band-tube type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890411.1U CN207066203U (en) | 2017-07-21 | 2017-07-21 | A kind of band-tube type air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207066203U true CN207066203U (en) | 2018-03-02 |
Family
ID=61510460
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720890411.1U Active CN207066203U (en) | 2017-07-21 | 2017-07-21 | A kind of band-tube type air preheater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595965A (en) * | 2018-12-28 | 2019-04-09 | 江苏利柏特股份有限公司 | Plate type heat exchanger is used in module production |
-
2017
- 2017-07-21 CN CN201720890411.1U patent/CN207066203U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595965A (en) * | 2018-12-28 | 2019-04-09 | 江苏利柏特股份有限公司 | Plate type heat exchanger is used in module production |
| CN109595965B (en) * | 2018-12-28 | 2024-02-23 | 江苏利柏特股份有限公司 | Plate heat exchange device for module production |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210323 Address after: 471003 room 1302, 3rd floor, building 1, yinkun science and Technology Park, No. 6, Fenghua Road, Luoyang area, Luoyang Free Trade Zone, Henan Province Patentee after: LUOYANG MINGYUAN PETROCHEMICAL INDUSTRY TECHNOLOGY Co.,Ltd. Patentee after: LUOYANG RUICHANG ENVIRONMENTAL ENGINEERING Co.,Ltd. Address before: 471003 room 1302, 3rd floor, building 1, yinkun science and Technology Park, No. 6, Fenghua Road, Luoyang area, Luoyang Free Trade Zone, Henan Province Patentee before: LUOYANG MINGYUAN PETROCHEMICAL INDUSTRY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |