CN105928409A - Scale preventing method of inclined fin finned tube, inclined fin finned tube and heating furnace - Google Patents
Scale preventing method of inclined fin finned tube, inclined fin finned tube and heating furnace Download PDFInfo
- Publication number
- CN105928409A CN105928409A CN201610467848.4A CN201610467848A CN105928409A CN 105928409 A CN105928409 A CN 105928409A CN 201610467848 A CN201610467848 A CN 201610467848A CN 105928409 A CN105928409 A CN 105928409A
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- Prior art keywords
- fin
- finned tube
- heat exchange
- oblique wing
- tube
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Classifications
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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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the technical field of heat exchange equipment in such industries as petroleum chemical engineering, power energy, steel and iron smelting and air conditioners, in particular to an inclined fin finned tube. The inclined fin finned tube comprises a base tube vertically mounted, and a fin arranged on the outer wall of the base tube; an upward main heat exchange surface of the fin is aslant arranged; the fin is segmented in a downward inclined direction; and all the sections are discontinuous in the horizontal direction. Compared with the prior art, an innovated fin structure is adopted, meanwhile, a conventional thought in the field is broken through, and a traditional setting mode of the fin of the finned tube using a conventional shape is discarded; after the technical methods are applied, the fluid turbulence can be generated to improve the heat exchange coefficient, and the heat exchange effect is kept stable and effective for a long time; and the invention further provides a heating furnace and a scale preventing method of the inclined fin finned tube.
Description
Technical field
The application relates to the technical field of heat exchange equipment in the industries such as petrochemical industry, electric power energy, smelting iron and steel, air-conditioning,
Particularly relate to a kind of tiltedly wing finned tube antiscaling method, oblique wing finned tube and heating furnace.
Background technology
Finned tube exchanger includes various heating furnace, finned tube preheater, heat collector and air cooler etc., is widely used
One of heat exchanger, its design and manufacturing process are ripe, and safety is high, are flue gas and steam heat recovery profit in heat transmission equipment
Crucial energy-saving equipment.From structure type can finned tube be divided into oblique wing fin be main spiral winding finned tube and
Vertical wing fin is the main big fundamental type of vertical wing finned tube two.The fin of finned tube is that geometry sheet is block, and wherein area is maximum
Two faces are referred to as main heat exchange face, and the face that area is less is referred to as side.
The manufacturing process of spiral winding finned tube is simply efficient, so the application of its enhanced heat exchange is relatively early, the most relatively broad, takes
Obtained obvious effect.Spiral winding fin of the prior art is typically only used in the occasion of fin water tube placing flat, if made
Being used in the occasion that finned tube is disposed vertically up and down, the fin plane being originally basically perpendicular to base tube surface has just become close to horizontal plane
Direction, this structure is in longtime running, and fin is continuous print spiral type, the inclination of fin radiating surface (another upward
Radiating surface tilts down) easily accumulate dust formation dirt, and the helical fin of design is difficult to remove the dust of accumulation continuously, at pipe
Form thermal resistance between interior medium and the outer flue gas of pipe, affect heat exchange efficiency.
Along with the development of heat-exchanger rig Technology, finned tube is erect installation and is had that floor space is few and upstream and downstream equipment
The advantages such as connecting tube is short out, medium is smooth, energy loss is low, the occasion of use gets more and more, but people are satisfied with
Really, spiral winding finned tube is applied to erect the heat transmission equipment of installation finned tube, then meets to along finned tube outside such finned tube
The axially medium of flowing, axially the medium of flowing is affected by being perpendicular to the obstruction of the fin plane on base tube surface, and pressure drop increases,
Medium is difficult to go deep into fin bottom portion contact base tube surface Progressive symmetric erythrokeratodermia heat exchange, and then affects heat transfer effect, therefore, if tied fin
Structure is not innovated to prevent the problem of original existence, frequently can lead to heat-exchanger rig and does not reaches design effect.For a long time, right
Tiltedly the structure of wing finned tube and the improvement of manufacturing process thereof are paid close attention to not, also fail to obtain one and can be fully solved the problems referred to above
Finned tube.
Summary of the invention
The purpose of the application is to avoid above-mentioned weak point of the prior art to provide one can produce fluid turbulence
Improve the coefficient of heat transfer, the oblique wing finned tube of length in service life；Also provide for a kind of good effect of heat exchange, the heating furnace of physical life length；
Also provide for a kind of oblique wing finned tube dirt lip method of good dustproof effect.
The purpose of the application is achieved through the following technical solutions:
Provide a kind of tiltedly wing finned tube, including vertically-mounted base tube and the fin being arranged at described base tube outer wall, described wing
The system of main heat exchange face upward of sheet is obliquely installed, and described fin is along direction segmentation diagonally downward, and each section is not the most
Continuously.
Wherein, the main heat exchange face upward of described fin and the angle of vertical direction are more than 0 degree and less than 15 degree.
Wherein, described fin has polylith, polylith fin to be arranged above and below and on the incline direction in its main heat exchange face upward
Stagger.
Wherein, upper end and/or the lower end of described fin are vertical.
Wherein, the cross section of described base tube is circular, oval or oblate.
Wherein, the cross section of described fin is rectangle, triangle, circle, ellipse, oblate or annular.
Also providing for a kind of heating furnace, described heating furnace has oblique wing finned tube, and described oblique wing finned tube is above-mentioned oblique wing
Finned tube.
Also provide for oblique wing finned tube antiscaling method, use above-mentioned oblique wing finned tube, thus allow the master upward of fin change
Dust on hot side is blown in its horizontal direction discontinuous place and drops.
The beneficial effect of the application:
A kind of tiltedly wing finned tube of the application, compared with prior art, uses innovative fin structure, breaches ability simultaneously
Territory conventional thought, the fin having abandoned finned tube the most all uses the set-up mode of conventional shape, after applying these technological means
Can produce fluid turbulence and improve the coefficient of heat transfer, also overcoming most of finned tube in prior art cannot after vertically placing
Solve the limitation of dirt accumulation fouling so that flue gas ashes or dirt in air can from fin inclined-plane landing and cannot gather,
Make antiscaling effect good thus keep heat transfer effect the most effective, it is possible to frequency because remove heat exchanger dust is reduced or avoided
Numerous shutdown and the Operation and Maintenance of purging fin ashes, the most also have the feature extending finned tube service life.
A kind of heating furnace of the application, uses above-mentioned oblique wing finned tube, replaces spiral winding fin of the prior art
Pipe so that heat transfer effect obtains and promotes, flue gas ashes or dirt in air can from fin face landing and cannot gather so that antiscale
Effective thus keep heat transfer effect the most effective, it is possible to be reduced or avoided because of the frequent shutdown removing heat exchanger dust with
And the Operation and Maintenance of purging fin ashes, the most also there is the feature extending finned tube service life.
The oblique wing finned tube antiscaling method of the application, uses above-mentioned oblique wing finned tube, has good dust-proof effect, anti-
Only dust energy product coalescence dirt, is enough reduced or avoided the frequent shutdown because removing heat exchanger dust and the operation of purging fin ashes
Safeguard that the most also there is the feature extending finned tube service life.
Accompanying drawing explanation
Utilize accompanying drawing that the application is described further, but the embodiment in accompanying drawing does not constitute any limit to the application
System, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to the following drawings
Other accompanying drawing.
Fig. 1 is the front view of the first finned tube of the embodiment of a kind of oblique wing finned tube of the application.
Fig. 2 is the front view of the second finned tube of the embodiment of a kind of oblique wing finned tube of the application.
Fig. 3 is the front view of the third finned tube of the embodiment of a kind of oblique wing finned tube of the application.
Fig. 4 is the schematic diagram of the embodiment of a kind of oblique wing finned tube of the application.
Fig. 1 to Fig. 4 includes:
1-fin；11-fin；12-fin；13-fin；101-fin；102-fin；103-fin；2-base tube；21-fin；
22-fin；201-fin；202-fin；203-fin；3-fin；301-lower end；302-upper end；4-fin；411-fin；
412-fin.
Detailed description of the invention
With the following Examples the application is further described.
Asking for an interview the schematic diagram that Fig. 4, Fig. 4 are the present embodiment, some pieces of fins 4 are separated by setting, fin along the outside wall surface of base tube 2
The system of main heat exchange face upward of 4 is obliquely installed, and as shown in Figure 4, every piece of fin 4, along direction segmentation diagonally downward, is divided into first
Section 411 and second segment 421, by dotted line in figure it can be seen that this two section 411,421 be discontinuous in the horizontal direction.?
In finned tube work process, fluid media (medium) can be carried this dust upper end (top in Fig. 4) from base tube 2 secretly and flow to outside base tube 2
Lower end, dust can drop to carry out landing, dust meeting on the main heat exchange face upward of fin 411 and because tilting the relation with gravity
Region as shown in phantom in Figure 4 is fallen from the lower section of fin 411, and then prevents the accumulation of dust.
Embodiment 1
One of detailed description of the invention of a kind of oblique wing finned tube of the application, shown in Figure 1, include base tube 2 and some
Individual fin 1, some pieces of fins 1 are separated by around arranging along the outside wall surface of base tube 2, fin 1 can by the way of assembly welding with base tube 2
Outside wall surface compact siro spinning technology, wherein, the system of main heat exchange face upward of fin 1 is obliquely installed, and several fins 1 are toward the right in Fig. 1
Tilting, wherein, fin 1 more than 0 degree and is less than 15 degree with the angle a of vertical direction, and multiple fins 1 incline along main heat exchange face upward
Oblique direction segmentation, each section is discontinuous in the horizontal direction, concrete, asks for an interview Fig. 1, Fig. 1 and depicts three row fins 11,12,13,
Counting from top to bottom, the first row fin 11 includes five pieces of fins tilted 111, there is gap between two pieces of adjacent fins 111,
Same, the second row fin 12 includes five pieces of fins tilted 112, and the third line fin 13 includes five pieces of fins tilted 113, its
Set-up mode such as the first row fin 11 is identical, it addition, there is also gap between the first row fin 11 and the second row fin 12, the most
Fin 1 in the vertical direction of individual inclination has carried out segmentation, is i.e. to be interrupted between the first row fin 11 and the second row fin 12,
Define phantom, concrete, the first row fin 11 and the second row fin 12 for being arranged above and below, and the first row fin 111 with
Second row fin 112 is in an inclined direction aligned with.Use above-mentioned fin structure, overcome continuous print in prior art oblique
Fin can pile up dirt accumulation fouling, affects the difficulty of heat transfer effect, and the oblique wing finned tube of the present embodiment, its fin 1 is upward
Main heat exchange face be tilt, and fin 1 along tilt direction carried out segmentation, make dust can along tilt master upward change
Hot side landing, and fall at end (at the segmentation) place of fin 1, the continuous oblique fin that length is longer than ever mutually, dust meeting
Landing cannot cause dust accretions because main heat exchange face is longer, and the fin of the present embodiment is more beneficial for the landing of dust, makes
Flue gas ashes or dirt in air can from fin inclined-plane landing and cannot gather so that antiscaling effect is good thus keeps heat exchange to imitate
Fruit is steady in a long-term effectively, it is possible to frequent shutdown because remove heat exchanger dust and the operation of purging fin ashes are reduced or avoided
Safeguard, and then extend the feature in finned tube service life.Fin 1 subsection setup of the present embodiment, is not only advantageous to prevent dust
Accumulation, but also have make fluid produce action of turbulent flow, by action of turbulent flow improve the coefficient of heat transfer, and then strengthen heat exchange effect
Really, concrete, before fluid flows into the second row fin 12, fluid needs through phantom (the first row fin 11 and the second row wing
Gap between sheet 12), owing to phantom is not provided with barrier obstruction, the runner of fluid can change, and makes fluid produce
Turbulent flow, makes the outer wall of fluid and fin 1 or base tube 2 be fully contacted and carries out heat exchange, improves the coefficient of heat transfer by action of turbulent flow, and then
Strengthen heat transfer effect.
Embodiment 2
A kind of oblique wing finned tube of the application and the two of the detailed description of the invention of heating furnace, shown in Figure 2, the present embodiment
Main technical schemes is same as in Example 1, the most unaccounted feature, uses the explanation in embodiment 1, at this not
Repeat again.The present embodiment is with the difference of embodiment 1: fin 1 has polylith, polylith fin 1 to be arranged above and below and in its court
On main heat exchange face incline direction on stagger, ask for an interview Fig. 2, count from top to bottom, on the first row fin 21 and the second row fin 22
, between the first row fin 21 and the second row fin 22, there is certain distance in lower arrangement, as in figure 2 it is shown, the fin 203 in the second row
The gap location between fin 201 and fin 202 in alignment the first row, wherein fin 201,202,203 and the folder of vertical direction
Angle is the most identical, and the fin 203 in the i.e. second row and the fin 201,202 in the first row incline fin 1 main heat exchange face upward
Staggering on tilted direction, fin 203 is directed at which place or the wing that is arranged above and below of the gap location between fin 201 and fin 202
Distance size between sheet 21 and fin 22, specifically depending on operating condition and design.Under normal conditions, if the flowing of fluid
Speed is relatively low, but need to be by longer finned tube, and the longest fin in finned tube is all continuous and length is longer,
Dust the most easily piled up by the fin that length is longer, and when fluid is by longer and continuous print fin, can be formed outside base tube 2
Stable laminar flow, reduction heat transfer effect, and the most staggered fin 1 in the present embodiment, instead of the longest
Fin, exist between the fin 11 being arranged above and below and fin 21 certain distance (in Fig. 1 between the first row and the second row away from
From), carry out forming phantom, when fluid flows through phantom, then can change runner direction, make fluid produce turbulent, and action of turbulent flow
Make the heat transfer effect between fluid and fin more abundant and effective, and, the fluid the second row fin in entering Fig. 1
During 203 sides, owing to the fin 203 of the first row fin 201 and the second row fin 202 and the second row is in main heat exchange face
Incline direction on stagger, fluid can occur the change of runner during flowing into the second row fin 203 side, make again
Fluid produces turbulent flow, and action of turbulent flow makes the heat transfer effect between fluid and fin 1 more abundant and effective, makes to be more beneficial for
Improve the heat exchange efficiency of finned tube.
Embodiment 3
A kind of oblique wing finned tube of the application and the three of the detailed description of the invention of heating furnace, shown in Figure 3, the present embodiment
Main technical schemes is same as in Example 1, the most unaccounted feature, uses the explanation in embodiment 1, at this not
Repeat again.The present embodiment is with the difference of embodiment 1: the upper end of fin 3 and/or lower end are vertical, concrete, ask for an interview figure
3, the lower end 301 of fin 3 and the upper end 302 of fin 3 are all to be vertically arranged, and the most vertical implementation can pass through mould one
Body formed, or carry out bending by bender, ask for an interview Fig. 3, the lower end 301 of fin 3 and the upper end 302 of fin 3 are all vertically arranged,
Certainly, only the upper end 301 of fin 3 is arranged vertically, concrete depending on working condition.The oblique wing finned tube of this structure is more applicable
Being the situation from finned tube radial inflow in fluid media (medium), the upper end 301 of the fin 3 of the present embodiment is by being arranged to vertically, more
Be conducive to the fluid flow to from base tube 2 axial direction is guided the effect of the flow direction, and the upper end 301 of fin 3 be vertically arranged,
Match with the fluid media (medium) axially flowed into, and then play the effect reducing air drag, and upper from fin 3 of fluid media (medium)
End 301 flows to the sloping portion of fin 3, and the runner direction of fluid media (medium) can be changed, and makes fluid produce turbulent flow, and turbulent flow is made
More abundant and effective with the heat transfer effect made between fluid and fin 3, thus improve the coefficient of heat transfer, and, fin 3 times
End is arranged to vertically, plays and guides dust to fall the effect in direction, is more beneficial for the landing of dust so that antiscaling effect good thus
Keep heat transfer effect the most effective, it is possible to frequent shutdown because remove heat exchanger dust and purging fin are reduced or avoided
The Operation and Maintenance of ashes.
Embodiment 4
The four of the detailed description of the invention of a kind of oblique wing finned tube of the application, the main technical schemes of the present embodiment and embodiment 1
Identical, the most unaccounted feature, use the explanation in embodiment 1, no longer repeat at this.The present embodiment with
The difference of embodiment 1 is: the cross section of described base tube 2 is set to the one of which in Long Circle, oblateness and olive shape.Separately
Outward, base tube 2 may be arranged as warp architecture.The cross section of fin is alternatively rectangle, triangle, circle, ellipse, oblate
One of which in shape annular.
The oblique wing finned tube of any of the above-described embodiment is suitable for a kind of tiltedly wing finned tube antiscaling method, concrete, such as Fig. 1
Shown in, the direction segmentation that multiple fins 1 tilt along main heat exchange face upward, each section is discontinuous in the horizontal direction, allows fin
The dust on main heat exchange face upward is blown in its horizontal direction discontinuous place and drops, and prevents dirt accumulation fouling, solves
In the past can there is dust accretions in the long fin of continuous print, cannot the problem of landing because fin main heat exchange face length degree is longer.
The finned tube of any of the above-described embodiment is all applied among heating furnace (be not drawn in figure), the heating furnace of this structure
Replace the heating furnace with spiral fin coil of the prior art so that heat transfer effect obtains and promotes, flue gas ashes or air dirt
Angstrom can from fin face landing and dirt cannot be accumulated into so that antiscaling effect is good thus keeps heat transfer effect effective steadily in the long term,
Frequent shutdown because remove heat exchanger dust and the Operation and Maintenance of purging fin ashes can be reduced or avoided, the most also have
Extend the feature in finned tube service life.
Last it should be noted that, above example is only in order to illustrate the technical scheme of the application, rather than the application is protected
Protecting the restriction of scope, although having made to explain to the application with reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, the technical scheme of the application can be modified or equivalent, without deviating from the reality of technical scheme
Matter and scope.
Claims (8)
1. an oblique wing finned tube, including vertically-mounted base tube and the fin being arranged at described base tube outer wall, described fin
Main heat exchange face system upward is obliquely installed, it is characterised in that: described fin is along direction segmentation diagonally downward, and each section in level side
The most discontinuous.
One the most according to claim 1 oblique wing finned tube, it is characterised in that: the main heat exchange face upward of described fin with
The angle of vertical direction is more than 0 degree and less than 15 degree.
One the most according to claim 1 oblique wing finned tube, it is characterised in that: described fin has polylith, on polylith fin
Lower arrangement is also staggered on the incline direction in its main heat exchange face upward.
One the most according to claim 1 oblique wing finned tube, it is characterised in that: the upper end of described fin and/or lower end are erected
Directly.
One the most according to claim 1 oblique wing finned tube, it is characterised in that: the cross section of described base tube is circular, ellipse
Circular or oblate.
One the most according to claim 1 oblique wing finned tube, it is characterised in that: the cross section of described fin be rectangle, three
Dihedral, circle, ellipse, oblate or annular.
7. a heating furnace, it is characterised in that: described heating furnace has oblique wing finned tube, and described oblique wing finned tube is claim
Oblique wing finned tube according to any one of 1 to 6.
8. oblique wing finned tube antiscaling method, is characterized in that using the oblique wing finned tube according to any one of claim 1 to 6, from
And allow fin main heat exchange face upward on dust be blown in its horizontal direction discontinuous place and drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467848.4A CN105928409A (en) | 2016-06-24 | 2016-06-24 | Scale preventing method of inclined fin finned tube, inclined fin finned tube and heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467848.4A CN105928409A (en) | 2016-06-24 | 2016-06-24 | Scale preventing method of inclined fin finned tube, inclined fin finned tube and heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105928409A true CN105928409A (en) | 2016-09-07 |
Family
ID=56831783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610467848.4A Pending CN105928409A (en) | 2016-06-24 | 2016-06-24 | Scale preventing method of inclined fin finned tube, inclined fin finned tube and heating furnace |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3330336A (en) * | 1964-03-24 | 1967-07-11 | Gobel Gerhard | Heat exchanger tubes with longitudinal ribs |
| GB1210466A (en) * | 1968-04-16 | 1970-10-28 | Aluminium Foils Ltd | Improvements in and relating to finned tubing |
| JPS4871447U (en) * | 1971-12-09 | 1973-09-07 | ||
| JPS5749792A (en) * | 1980-09-09 | 1982-03-23 | Nippon Mining Co Ltd | Vertical type heat transfer tube |
| JPS6470696A (en) * | 1987-09-11 | 1989-03-16 | Hitachi Ltd | Heat transfer tube and manufacture thereof |
| CN103557736A (en) * | 2013-11-22 | 2014-02-05 | 茂名重力石化机械制造有限公司 | Slant finned tube |
| CN104654272A (en) * | 2014-12-30 | 2015-05-27 | 三河发电有限责任公司 | Low-temperature coal economizer for promoting agglomeration of fine particulate matters at tail flue of thermal power plant |
| CN204421699U (en) * | 2014-12-25 | 2015-06-24 | 浙江农林大学 | Gas-gas formula firewood boiler flue heat-exchange device |
| CN205784784U (en) * | 2016-06-24 | 2016-12-07 | 茂名重力石化机械制造有限公司 | Tiltedly wing finned tube and heating furnace |
-
2016
- 2016-06-24 CN CN201610467848.4A patent/CN105928409A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3330336A (en) * | 1964-03-24 | 1967-07-11 | Gobel Gerhard | Heat exchanger tubes with longitudinal ribs |
| GB1210466A (en) * | 1968-04-16 | 1970-10-28 | Aluminium Foils Ltd | Improvements in and relating to finned tubing |
| JPS4871447U (en) * | 1971-12-09 | 1973-09-07 | ||
| JPS5749792A (en) * | 1980-09-09 | 1982-03-23 | Nippon Mining Co Ltd | Vertical type heat transfer tube |
| JPS6470696A (en) * | 1987-09-11 | 1989-03-16 | Hitachi Ltd | Heat transfer tube and manufacture thereof |
| CN103557736A (en) * | 2013-11-22 | 2014-02-05 | 茂名重力石化机械制造有限公司 | Slant finned tube |
| CN204421699U (en) * | 2014-12-25 | 2015-06-24 | 浙江农林大学 | Gas-gas formula firewood boiler flue heat-exchange device |
| CN104654272A (en) * | 2014-12-30 | 2015-05-27 | 三河发电有限责任公司 | Low-temperature coal economizer for promoting agglomeration of fine particulate matters at tail flue of thermal power plant |
| CN205784784U (en) * | 2016-06-24 | 2016-12-07 | 茂名重力石化机械制造有限公司 | Tiltedly wing finned tube and heating furnace |
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| Title |
|---|
| 王基铭: "《石油炼制辞典》", 30 September 2013, 中国石化出版社 * |
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| CB02 | Change of applicant information |
Address after: 525024 Guangdong City, Maoming Province Ring West Road, No. 91 Applicant after: Maoming gravity Petrochemical Equipment Co Ltd Address before: 525024 Maoming City, Guangdong Province West Road, Maoming City, the gravity of the Petrochemical Machinery Manufacturing Co., Ltd., Applicant before: The Challenge Petrochemical Machinery Corporation |
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Application publication date: 20160907 |