CN107504849A - Coke oven flue gas efficient energy-saving device - Google Patents
Coke oven flue gas efficient energy-saving device Download PDFInfo
- Publication number
- CN107504849A CN107504849A CN201710729355.8A CN201710729355A CN107504849A CN 107504849 A CN107504849 A CN 107504849A CN 201710729355 A CN201710729355 A CN 201710729355A CN 107504849 A CN107504849 A CN 107504849A
- Authority
- CN
- China
- Prior art keywords
- chamber
- recuperation
- heat
- flue gas
- economizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B29/00—Other details of coke ovens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0075—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for syngas or cracked gas cooling systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Coke Industry (AREA)
Abstract
The invention discloses a kind of coke oven flue gas efficient energy-saving device, including air entraining pipe, the outlet side of air entraining pipe is communicated with cushion chamber, bumper bracket is installed in cushion chamber, multiple ceramic buffering balls are placed with bumper bracket, the outlet side of cushion chamber is communicated with recuperation of heat chamber, recuperation of heat intracavitary is provided with economizer, the water inlet end of economizer is placed on the lower section of recuperation of heat chamber through recuperation of heat chamber, the water side of economizer is placed in the top of recuperation of heat chamber, and the week side of boss of economizer is radial to be detachably provided with multiple heat conduction long copper pieces；The outlet side of recuperation of heat chamber is communicated with the first filter chamber, and the outlet side of the first filter chamber is connected with snorkel, and two fine and closely woven mesh plates are detachably provided with the first filter chamber, activated carbon is filled between two fine and closely woven mesh plates.Coking of coal flue gas is buffered, enters subsequent treatment process after sufficiently exothermic and preliminary filtering, and under the absorption of economizer and heat conduction long copper piece, flue gas waste heat recovery is more thorough, and energy recovery efficiency is higher.
Description
Technical field
The present invention relates to heat reclamation device technical field, and in particular to a kind of coke oven flue gas efficient energy-saving device.
Background technology
Coking of coal is also known as coal high-temperature retorting, is using coal as raw material, in the case where completely cutting off air conditionses, coal is heated into 950 DEG C
Left and right, coke is produced through high-temperature retorting, while obtain coal gas, coal tar and a kind of coal conversion work for reclaiming other chemical products
Skill.In whole coal conversion process process, some high-temperature flue gas waste gas are inevitably produced, these flue gases have been taken away largely
Heat energy, great energy waste can be caused.
At present, various new energy-saving equipments are continuously available development, such as using the high-quality thermal insulating material such as refractory fibre
Material, is decreased obviously the radiation loss of coal converting apparatus.However, reduce the heat loss of flue gas waste gas and the skill of Mist heat recovering
Art makes little progress.In order to further improve the efficiency of utilization in coal conversion process, reach energy-saving purpose, recovered flue gas
Waste heat is also an important energy saving way.In the prior art, it would be highly desirable to provide a kind of heat recovery efficiency it is higher be directed to coke oven cigarette
The energy-saving recovery device of gas.
The content of the invention
In order to solve the above-mentioned technical problem, the technical scheme is that, there is provided a kind of coke oven flue gas efficient energy-saving device,
Air entraining pipe including introducing coking of coal flue gas for connecting, the outlet side of the air entraining pipe is communicated with cushion chamber, the cushion chamber
One end of the interior close air entraining pipe is detachably provided with bumper bracket, and multiple ceramic buffering balls, institute are placed with the bumper bracket
The outlet side for stating cushion chamber is communicated with recuperation of heat chamber, and the recuperation of heat intracavitary is provided with economizer, the water inlet end of the economizer
The lower section of the recuperation of heat chamber is placed on through the recuperation of heat chamber, the water side of the economizer is passed through outside the recuperation of heat chamber
The top of the recuperation of heat chamber is placed in, the week side of boss of the economizer is radial to be detachably provided with multiple heat conduction long copper pieces；Institute
The outlet side for stating recuperation of heat chamber is communicated with the first filter chamber, and the outlet side of first filter chamber is connected with snorkel, and described
Two fine and closely woven mesh plates being oppositely arranged detachably are installed in one filter chamber, is filled with and lives between two fine and closely woven mesh plates
Property charcoal.
Further, the bottom of the cushion chamber is provided with slot, and socket is provided with the top of the cushion chamber, described slow
Rush after frame passes through the socket and be fixed at the slot；The bumper bracket includes mesh case, and the bottom of the mesh case is set
There is the cutting to match with the slot, the spigot is provided with the seal washer for sealing the socket.
Further, it is in cellular absorption air-vent to be provided with the ceramic buffering ball intensive.
Further, fiber floc sedimentation is additionally provided with first filter chamber, the fiber floc sedimentation includes entwining into bulk
Carbon fiber silk thread, bombax cotton silk thread and viscose rayon silk thread.
Further, the second filter chamber, second mistake are communicated between the recuperation of heat chamber and first filter chamber
The filtered fluid for dissolving the hydrotrope in flue gas is provided with filter chamber.
Further, the recuperation of heat intracavitary is additionally provided with automatically controlled aerofoil fan, and the aerofoil fan is arranged on described
One end of the remote cushion chamber of recuperation of heat chamber.
Further, urgent exhaust outlet, the end of the urgent exhaust outlet are provided with the bottom side of the wall of the recuperation of heat chamber
Portion is provided with end cover.
Technical solution of the present invention has the beneficial effect that：The portion of a certain process during coking of coal can be accessed by air entraining pipe
Divide high-temperature flue gas, during lasting high-strength working, these high-temperature flue gas have very big flow velocity, by setting cushion chamber can
So that swiftly flowing flue gas slowly to be handled, the ceramic buffering ball that is loaded on the bumper bracket and support body that are provided with can be with
Effectively achieve slow purpose；High-temperature flue gas after slow is flowed into recuperation of heat chamber, is completely attached to and is washed away economizer and heat conduction
After long copper piece, most of heat is absorbed by conduction, and remaining low temperature waste gas passes through the first filter chamber and tentatively filtered, most
Other processing equipments are flowed into by snorkel afterwards, waste heat recovery efficiency of the whole device to flue gas is higher, and smoke heat energy absorbs profit
Reach energy-efficient purpose after.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structure chart of coke oven flue gas efficient energy-saving device of the embodiment of the present invention.
Wherein, reference is：
1st, air entraining pipe, 2, cushion chamber, 3, bumper bracket, 4, ceramic buffering ball, 5, recuperation of heat chamber, 6, economizer, 6a, water inlet
End, 6b, water side, 7, heat conduction long copper piece, the 8, first filter chamber, 9, snorkel, 10, fine and closely woven mesh plate, 11, activated carbon, 12, fine
Tie up floc sedimentation, the 13, second filter chamber, 14, aerofoil fan, 15, urgent exhaust outlet, 16, end cover.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, introduce coking of coal the invention provides a kind of coke oven flue gas efficient energy-saving device, including for connecting
The air entraining pipe 1 of flue gas, the outlet side of air entraining pipe 1 are communicated with cushion chamber 2, detachably pacified close to one end of air entraining pipe 1 in cushion chamber 2
Equipped with bumper bracket 3, multiple ceramic buffering balls 4 are placed with bumper bracket 3, the outlet side of cushion chamber 2 is communicated with recuperation of heat chamber 5, heat
Economizer 6 is installed, the water inlet end 6a of economizer 6 is placed on the lower section of recuperation of heat chamber 5 through recuperation of heat chamber 5, saves in reclaiming chamber 5
The water side 6b of coal device 6 is placed on the top of recuperation of heat chamber 5 through recuperation of heat chamber 5, and the week side of boss of economizer 6 is radial detachable
Multiple heat conduction long copper pieces 7 are installed；The outlet side of recuperation of heat chamber 5 is communicated with the first filter chamber 8, the outlet side of the first filter chamber 8
Snorkel 9 is connected with, the fine and closely woven mesh plate 10 of two be oppositely arranged, two fine and closely woven nets are detachably installed in the first filter chamber 8
Activated carbon 11 is filled between orifice plate 10.
Specifically, the part high-temperature flue gas of a certain process during coking of coal can be accessed by air entraining pipe 1, in lasting height
During intensive tasks, these high-temperature flue gas have very big flow velocity, by setting cushion chamber 2 can be by swiftly flowing flue gas
Slowly handled, the ceramic buffering ball 4 loaded on the bumper bracket 3 and support body being provided with can effectively achieve slow mesh
's；High-temperature flue gas after slow is flowed into recuperation of heat chamber 5, completely attach to and wash away economizer 6 and heat conduction long copper piece 7 after, greatly
Partial heat is absorbed by conduction, and remaining low temperature waste gas passes through the first filter chamber 8 and tentatively filtered, finally by snorkel
Other processing equipments are flowed into, waste heat recovery efficiency of the whole device to flue gas is higher.
Improved as one of which, the bottom of above-mentioned cushion chamber 2 is provided with slot, correspondingly, set at the top of cushion chamber 2
Socket is equipped with, bumper bracket 3 is fixed at slot after passing through socket；In the present embodiment, bumper bracket 3 includes mesh case, mesh case
Bottom is provided with the cutting to match with slot, and spigot is provided with the seal washer for seal insert.
It is preferred that in the present embodiment, it is in cellular absorption air-vent to be provided with above-mentioned ceramic buffering ball 4 intensive.
The honeycomb structure set on ceramic buffering ball 4, certain graininess dust can be adsorbed while highly-breathable is ensured, simultaneously
Minimal amount of heat energy only can be absorbed, avoids fume afterheat from being excessively lost.
Improved as another kind, be additionally provided with fiber floc sedimentation 12 in the first filter chamber 8, in the present embodiment, to ensure first
Filter chamber 8 is to the filter effect of flue gas, and it is more to be provided with micropore in cavity, the filament of the little particle advantages of good adsorption effect such as dust
Line, fiber floc sedimentation 12 can include the carbon fiber silk thread, bombax cotton silk thread and viscose rayon silk thread for entwining into bulk.
Further, as one of which optimization design, for some water-soluble flue gas impurity, can be entered by aqueous solvent
Row once filters；In the present embodiment, the second filter chamber is also provided with and communicated between the above-mentioned filter chamber 8 of recuperation of heat chamber 5 and first
13, the filtered fluid for dissolving the hydrotrope in flue gas is provided with the second filter chamber 13.
As another optimization design, automatically controlled aerofoil fan 14, aerofoil fan 14 are also provided with recuperation of heat chamber 5
Installed in one end of the remote cushion chamber 2 of recuperation of heat chamber 5.The setting of aerofoil fan 14 can form convection current after unlatching, with stream
The flue gas reverse flow entered in recuperation of heat chamber 5, driving high-temperature flue gas iterative cycles wash away economizer 6, economizer 6 is absorbed more
Heat energy, lifted waste heat recovery efficiency.
Preferably, in the present embodiment, urgent exhaust outlet 15 is provided with the bottom side of the wall of recuperation of heat chamber 5, urgent exhaust
The end set of mouth 15 has end cover 16.Specifically, the effect of urgent exhaust outlet 15 is, when recuperation of heat chamber 5 and other chambers
When the pipeline connected between body is blocked, to avoid the gases at high pressure persistently flowed into cavity from damaging equipment by pressure, this is urgent for emergency opening
Exhaust outlet 15 carries out pressure release.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
- A kind of 1. coke oven flue gas efficient energy-saving device, it is characterised in that：Air entraining pipe including introducing coking of coal flue gas for connecting, The outlet side of the air entraining pipe is communicated with cushion chamber, is detachably provided with close to one end of the air entraining pipe in the cushion chamber slow Frame is rushed, multiple ceramic buffering balls are placed with the bumper bracket, the outlet side of the cushion chamber is communicated with recuperation of heat chamber, the heat Economizer is installed, the water inlet end of the economizer is placed under the recuperation of heat chamber through the recuperation of heat chamber in reclaiming chamber Side, the water side of the economizer are placed on the top of the recuperation of heat chamber, the week of the economizer through the recuperation of heat chamber Side is radial to be detachably provided with multiple heat conduction long copper pieces；The outlet side of the recuperation of heat chamber is communicated with the first filter chamber, institute The outlet side for stating the first filter chamber is connected with snorkel, and it is thin that two be oppositely arranged are detachably provided with first filter chamber Close mesh plate, activated carbon is filled between two fine and closely woven mesh plates.
- 2. coke oven flue gas efficient energy-saving device according to claim 1, it is characterised in that：The bottom of the cushion chamber is set There is slot, socket is provided with the top of the cushion chamber, the bumper bracket is fixed at the slot after passing through the socket；Institute Stating bumper bracket includes mesh case, and the bottom of the mesh case is provided with the cutting to match with the slot, and the spigot is set It is equipped with the seal washer for sealing the socket.
- 3. coke oven flue gas efficient energy-saving device according to claim 1, it is characterised in that：Set on the ceramic buffering ball It is in cellular absorption air-vent to have intensive.
- 4. coke oven flue gas efficient energy-saving device according to claim 1, it is characterised in that：Also set in first filter chamber Fiber floc sedimentation is equipped with, the fiber floc sedimentation includes the carbon fiber silk thread, bombax cotton silk thread and viscose rayon for entwining into bulk Silk thread.
- 5. coke oven flue gas efficient energy-saving device according to claim 1, it is characterised in that：The recuperation of heat chamber and described The second filter chamber is communicated between one filter chamber, the filtering for dissolving the hydrotrope in flue gas is provided with second filter chamber Liquid.
- 6. coke oven flue gas efficient energy-saving device according to claim 1, it is characterised in that：The recuperation of heat intracavitary is also set up There is automatically controlled aerofoil fan, the aerofoil fan is arranged on one end of the remote cushion chamber of the recuperation of heat chamber.
- 7. coke oven flue gas efficient energy-saving device according to claim 1, it is characterised in that：The lower end side of the recuperation of heat chamber Urgent exhaust outlet is provided with wall, the end set of the urgent exhaust outlet has end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729355.8A CN107504849A (en) | 2017-08-23 | 2017-08-23 | Coke oven flue gas efficient energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729355.8A CN107504849A (en) | 2017-08-23 | 2017-08-23 | Coke oven flue gas efficient energy-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107504849A true CN107504849A (en) | 2017-12-22 |
Family
ID=60692505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710729355.8A Pending CN107504849A (en) | 2017-08-23 | 2017-08-23 | Coke oven flue gas efficient energy-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107504849A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130186088A1 (en) * | 2012-01-24 | 2013-07-25 | GM Global Technology Operations LLC | Adaptive heat exchange architecture for optimum energy recovery in a waste heat recovery architecture |
| CN104315891A (en) * | 2014-11-07 | 2015-01-28 | 黄秀琼 | Heat exchanger capable of achieving flue gas cleaning and waste heat recovery |
| CN104315872A (en) * | 2014-10-31 | 2015-01-28 | 惠州市拓丰实业有限公司 | Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect |
| CN104353315A (en) * | 2014-11-03 | 2015-02-18 | 侨健新能源科技（苏州）有限公司 | Flue gas treatment device |
| CN105526578A (en) * | 2016-01-28 | 2016-04-27 | 南京华电节能环保设备有限公司 | Energy-saving environment-friendly comprehensive treating device and technology for smoke in coking plant |
| CN106402887A (en) * | 2016-11-11 | 2017-02-15 | 北京神雾环境能源科技集团股份有限公司 | System and method for drying garbage by means of waste heat from flue gas |
| CN206208039U (en) * | 2016-11-16 | 2017-05-31 | 仁化县奥达胶合板有限公司 | A kind of novel industrial furnace flue gas vapors residual heat using device |
-
2017
- 2017-08-23 CN CN201710729355.8A patent/CN107504849A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130186088A1 (en) * | 2012-01-24 | 2013-07-25 | GM Global Technology Operations LLC | Adaptive heat exchange architecture for optimum energy recovery in a waste heat recovery architecture |
| CN104315872A (en) * | 2014-10-31 | 2015-01-28 | 惠州市拓丰实业有限公司 | Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect |
| CN104353315A (en) * | 2014-11-03 | 2015-02-18 | 侨健新能源科技（苏州）有限公司 | Flue gas treatment device |
| CN104315891A (en) * | 2014-11-07 | 2015-01-28 | 黄秀琼 | Heat exchanger capable of achieving flue gas cleaning and waste heat recovery |
| CN105526578A (en) * | 2016-01-28 | 2016-04-27 | 南京华电节能环保设备有限公司 | Energy-saving environment-friendly comprehensive treating device and technology for smoke in coking plant |
| CN106402887A (en) * | 2016-11-11 | 2017-02-15 | 北京神雾环境能源科技集团股份有限公司 | System and method for drying garbage by means of waste heat from flue gas |
| CN206208039U (en) * | 2016-11-16 | 2017-05-31 | 仁化县奥达胶合板有限公司 | A kind of novel industrial furnace flue gas vapors residual heat using device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109513319A (en) | A kind of waste gas treatment equipment and its waste gas processing method | |
| CN206082023U (en) | Laser coding machine's dust, exhaust treatment device | |
| CN206435022U (en) | Coking exhaust treatment system | |
| CN208465546U (en) | A kind of waste gas purification apparatus | |
| CN104014231B (en) | A kind of integrated desulfurizing denitration demercuration flue gas purification system and process for purifying | |
| CN210584899U (en) | Polycondensation kettle heat recovery device | |
| CN206508698U (en) | Film workshop air cleaning unit | |
| CN212017106U (en) | Tail gas recovery and purification system of silicon metal smelting furnace | |
| CN107504849A (en) | Coke oven flue gas efficient energy-saving device | |
| CN213643607U (en) | Tail gas treatment system is used in sodium silicate production and processing | |
| CN107312555A (en) | Intelligent control type coking of coal flue gas waste heat recovery system | |
| CN215539298U (en) | Flue gas dust removal device for electric furnace capable of recovering heat | |
| CN209302490U (en) | A kind of elasticizer exhaust-gas treatment environmental protecting device | |
| CN210045075U (en) | Dust removal and denitration integrated device for sodium silicate processing | |
| CN205672732U (en) | A kind of asphalt emulsifier produces uses efficiency of waste gas adsorbent equipment | |
| CN210968339U (en) | Waste collecting device of sander | |
| CN208742226U (en) | One kind being directed to Wind Volume high concentration polluted air from paint booth governing system | |
| CN207493429U (en) | A kind of betel nut preliminary working smoke processing system | |
| CN202304459U (en) | Online dust removing device for low-temperature dust-containing tail gas | |
| CN221005989U (en) | Converter flue gas degree of depth waste heat recovery dry-type dust pelletizing system | |
| CN218653714U (en) | Chemical industry organic waste gas preliminary treatment environmental protection equipment | |
| CN108219861A (en) | A kind of thick straw fuel gas purification technique and its purifier | |
| CN220968679U (en) | Carbonization coke-discharging flue gas treatment device | |
| CN217058401U (en) | Ferromanganese smelting equipment with recyclable waste heat | |
| CN212548909U (en) | Tail gas purification device for processing tungsten titanium tantalum solid solution powder sintering furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 337022 Jiangxi city in Pingxiang Province, Xiangdong District, Pingxiang ceramics industry base (BU Zhen Da Po Cun Xiangdong District) Applicant after: PINGXIANG HUAXING ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 337019 Industrial South Road of ceramic industry base in Pingxiang, Jiangxi Province:PINGXIANG HUAXING CHEMICAL EQUIPMENT PACKING CO., LTD. Applicant before: PINGXIANG CITY HUAXING CHEMICAL EQUIPMENT PACKING CO.,LTD. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |