CN106064418B - A kind of timber deep charring device - Google Patents
A kind of timber deep charring device Download PDFInfo
- Publication number
- CN106064418B CN106064418B CN201610462126.XA CN201610462126A CN106064418B CN 106064418 B CN106064418 B CN 106064418B CN 201610462126 A CN201610462126 A CN 201610462126A CN 106064418 B CN106064418 B CN 106064418B
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- Prior art keywords
- microwave
- timber
- hot press
- deep charring
- pressure
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- 238000000034 method Methods 0.000 claims abstract description 20
- 238000009692 water atomization Methods 0.000 claims abstract description 9
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 230000006837 decompression Effects 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 abstract description 13
- 238000003763 carbonization Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 229920002488 Hemicellulose Polymers 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000003610 charcoal Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 241000233866 Fungi Species 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 210000001724 microfibril Anatomy 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- -1 resin Chemical class 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
Abstract
The invention belongs to wood processing technique fields, more particularly to a kind of timber deep charring device, including microwave office, hot press, water atomizing nozzle and barostat, the hot press is arranged at the indoor middle part of the microwave, the water atomizing nozzle is arranged on the indoor top of the microwave, the barostat is arranged on outside the microwave office, and is connected with the microwave office.Timber deep charring device of the present invention is easy to operate, easily controllable, avoids the situation that carbonization process tenders with a crispy crust, and realizes homogeneity charing, and more energy efficient, and production cost greatly reduces, improves production efficiency.
Description
Technical field
The invention belongs to wood processing technique fields, and in particular to a kind of timber deep charring device.
Background technology
In recent years, European carbonized wood enters Chinese market, due to its good stability of the dimension, corrosion resistant, beautiful appearance, environment
Close friend is favored be subject to consumers in general, is gradually widely applied outdoors in garden landscape, decorations.Carbonized wood is outdoors
It is capable of the service life of prolonging wood during use, saves and efficiently using timber resources, to promoting the development of wood protection industry
It plays an important role.
Timber is made of hemicellulose, cellulose, lignin and a small amount of extract, and charing principle mainly includes：
（1）The heat resistance of hemicellulose is poor, and under high temperature action, it degrades first, generates free acetic acid, and discharges
Acetic acid as a kind of catalyst, and accelerate hydrolysis of hemicellulose into carbohydrate.Therefore, after timber is heated, hemicellulose contains
Amount substantially reduces, and with the degradation of hemicellulose, hygroscopic hydroxyl substantially reduces, and is reduced so as to the hygroscopicity of timber, ruler
Very little stability improves.In addition, the generation of free acetic acid, and substantially reduce the favorite food of rotten fungi, thus from food chain
On inhibit the growth of rotten fungi.
（2）Cellulose is the long chain structure coexisted with crystal region and amorphous region.The size of cellulose moisture sorption, takes
Certainly in the size of amorphous region and the quantity of free hydroxyl group.When timber heats, the generation for the acetic acid that dissociates, and degrade amorphous region
The microfibril of middle cellulose, reduces amorphous region, makes the crystallinity of cellulose and crystalline size increase, this reduces timber
Hygroscopicity, add dimensional stability.
（3）The a small amount of extract contained in timber is lower-molecular substance, including resin acid, terpenoid, fat,
Wax, tannin, phenolic compound etc..When timber heats, most of extract volatilizations also reduce the food of rotten fungi, so as to
Improve the rotproofness of timber.In addition, the volatilization of the compounds such as resin, the paint and glue performance of timber are also improved.
Existing wood carbonization is mainly by the way that timber is put into large-scale cylinder, is then added in bottom
Heat, such carbonization process can only make the superficial charring of timber, profound timber can not be carbonized so that timber uses
After a long time, will expand or strain cracking.
The content of the invention
In view of the above problems, the present invention provides a kind of timber deep charring device, the device is easy to operate, easily controllable,
The situation that carbonization process tenders with a crispy crust is avoided, realizes homogeneity charing, and the charing of more conventional hot press is more energy efficient, greatly drops
Low production cost, improves production efficiency.
To solve problem above, the invention is realized by the following technical scheme：
A kind of timber deep charring device, including microwave office, hot press, water atomizing nozzle and barostat, the heat
Press is arranged at the indoor middle part of the microwave, and the water atomizing nozzle is arranged on the indoor top of the microwave, the air pressure
Adjuster is arranged on outside the microwave office, and is connected with the microwave office.
According to above-mentioned timber deep charring device, it is indoor that the hot press by hot pressing rack is fixed on the microwave
Middle part.
According to above-mentioned timber deep charring device, the barostat includes air pump and pressure gauge.
According to above-mentioned timber deep charring device, the hot press surrounding is provided with microwave generator.
According to above-mentioned timber deep charring device, the microwave outdoor face is provided with microwave controller, and described micro-
Wave producer signal connects.
According to above-mentioned timber deep charring device, the microwave outdoor face is provided with Control of Hot Press Control device, and described
Hot press signal connects.
The method that timber deep charring is carried out using the device, is comprised the following steps（Present invention moisture content as described below is
The quality of absolute drift, i.e. Water In Wood and the percentage of timber absolute dry mass）:
（1）Vacuum drying：Gained plate is placed in the microwave field that ambient pressure is 60~75KPa, first controls microwave work(
Rate is 300~400W, until plate moisture content drops to 90~100%, closes microwave and is kept for 30~60 seconds（With lower-wattage microwave
Reduce the initial aqueous rate of timber, make in later stage High-Power Microwave drying process will not in timber vapour pressure it is excessively high and in generating
Split phenomenon）；Microwave power is controlled again as 800~1000W, until plate temperature reaches 100~110 DEG C, close microwave keep 30~
60 seconds（About 4~6 minutes, High-Power Microwave is made to continue the short period, both reduce energy consumption, improve efficiency, and can guarantee in timber and steam
Vapour pressure appropriateness）；Microwave power is finally controlled as 200~300W, until plate moisture content drops to 5~8%（It is about 15~20 minutes, low
Power microwave undertakes main drying process, both reduces energy consumption, improves efficiency, and can guarantee temperature and vapour pressure appropriateness in timber,
Avoid implosion）；
（2）High pressure carbonizes：Saturated steam protection timber is passed through, while adjusts ambient pressure as 125~160KPa, and is made
Microwave power is maintained at 600~800W, then using hot press to timber carry out precompressed, first with 1~1.5MPa keep 10~
20min, then hot press pressure is increased to 2~3MPa holdings, 20~30min（Air pressure is increased, and is conducive to saturated vapor penetrated wood,
To balance the moisture content of timber internal layer and surface, and make the elevation of boiling point of vapor and Water In Wood in environment, and then temperature
Rise finally raises whole system temperature, drives the homogeneous charing of timber）；
（3）Microwave and hot press pressure, environment exhaust decompression are closed, and Temperature fall is to 30~50 DEG C, you can draw off.
According to above-mentioned timber deep charring device, step（2）The surface of heating platen temperature of the hot press for 350~
500 DEG C, make wood surface degree of carbonization deeper, meet a variety of market demands.
The present invention has following positive beneficial effect：
Apparatus of the present invention are easy to operate, easily controllable, avoid the situation that carbonization process tenders with a crispy crust, realize homogeneity charcoal
Change, and the charing of more conventional hot press is more energy efficient, and production cost greatly reduces, improves production efficiency.
In process of vacuum drying, energy directly penetrates into the inside of timber in the form of an electromagnetic wave, and passes through microwave electricity
Subfield and polar molecule in hydrone and timber（Such as hydroxyl）Interaction and generate big calorimetric rapidly, in the very short time
Interior, the temperature in wood cell quickly raises, and moisture evaporates rapidly, vapor also rapid expanding, and semi-enclosed cell can not
Moisture is quickly excluded, the pressure in wood cell is promoted to steeply rise, makes timber is inside and outside to form higher pressure differential.And moisture
Under the action of pressure differential, to external migration in the form of osmotic flow, make with rate of drying quickly, while the wind of timber implosion
Danger also increased dramatically.And research shows that initial aqueous rate is higher, vapour pressure peak value is higher, is more also easy to produce internal crack phenomenon.
Drying phase under vacuum is divided into the section that is rapidly heated, constant temperature zone and later stage warming-up section, the steam in constant temperature zone initial stage timber
Pressure reaches maximum, internal crack phenomenon easily occurs, seriously affects lumber quality, therefore is used in the stage of being rapidly heated compared with Gao Gong
Rate is saved the working time, and suitably reduces power in constant temperature zone, and control microwave power can be effectively kept away in an appropriate scope
Exempt from the generation of internal crack phenomenon.
Description of the drawings
Fig. 1 is the structure diagram of timber deep charring device of the present invention；
1 it is microwave office in figure, 2 be hot press, 3 be water atomizing nozzle, 4 be barostat, 5 be hot pressing rack, 6 is
Microwave generator, 7 be microwave controller, 8 be Control of Hot Press Control device.
Specific embodiment
Illustrate the specific embodiment of the present invention with reference to specific embodiment, but following embodiment is used only in detail
Illustrate the present invention, do not limit the scope of the invention in any way.Involved instrument and equipment is such as without spy in following embodiment
It does not mentionlet alone bright, is routine instrument device；The involved raw material of industry is commercially available regular industrial raw material unless otherwise instructed.
Embodiment 1
A kind of timber deep charring device, including microwave office, hot press, water atomizing nozzle and barostat, the heat
Press is arranged at the indoor middle part of the microwave, and the water atomizing nozzle is arranged on the indoor top of the microwave, the air pressure
Adjuster is arranged on outside the microwave office, and is connected with the microwave office.
The hot press is fixed on the indoor middle part of the microwave by hot pressing rack.The barostat includes air pump
And pressure gauge.The hot press surrounding is provided with microwave generator.The microwave outdoor face is provided with microwave controller, with institute
State the connection of microwave generator signal.The microwave outdoor face is provided with Control of Hot Press Control device, is connected with the hot press signal.
Embodiment 2
The method that timber deep charring is carried out using 1 device of embodiment, is comprised the following steps：
（1）Selection：Timber is selected, and is cut to the plate of consistency of thickness；
（2）Vacuum drying：Gained plate is placed in the microwave field that ambient pressure is 65KPa, first controls the microwave power to be
340W until plate moisture content drops to 90~95%, closes microwave and is kept for 45 seconds；Microwave power is controlled again as 850W, until plate temperature
Degree reaches 100~105 DEG C, closes microwave and is kept for 45 seconds；Microwave power is finally controlled as 240W, until plate moisture content drops to 6
~7%；
（3）High pressure carbonizes：Saturated steam protection timber is passed through, while adjusts ambient pressure as 140KPa, and makes microwave
Power is maintained at 700W, precompressed is then carried out to timber using hot press, surface of heating platen temperature is 400 DEG C, first with 1.2MPa
15min is kept, then increases hot press pressure to 2.5MPa holdings 25min；
（4）Microwave and hot press pressure, environment exhaust decompression are closed, and Temperature fall is to 40 DEG C, you can draw off, gained charcoal
To change carbonized deep, charing homogeney is good, and without internal crack phenomenon.
Embodiment 3
The method that timber deep charring is carried out using 1 device of embodiment, is comprised the following steps：
（1）Selection：Timber is selected, and is cut to the plate of consistency of thickness；
（2）Vacuum drying：Gained plate is placed in the microwave field that ambient pressure is 70KPa, first controls the microwave power to be
360W until plate moisture content drops to less than 95~100%, closes microwave and is kept for 45 seconds；Microwave power is controlled again as 950W, until
Plate temperature reaches 105~110 DEG C, closes microwave and is kept for 45 seconds；Microwave power is finally controlled as 260W, until under plate moisture content
Drop to 6~7%；
（3）High pressure carbonizes：Saturated steam protection timber is passed through, while adjusts ambient pressure as 150KPa, and makes microwave
Power is maintained at 700W, precompressed is then carried out to timber using hot press, surface of heating platen temperature is 450 DEG C, first with 1.2MPa
15min is kept, then increases hot press pressure to 2.5MPa holdings 25min；
（4）Microwave and hot press pressure, environment exhaust decompression are closed, and Temperature fall is to 40 DEG C, you can draw off, gained charcoal
To change carbonized deep, charing homogeney is good, and without internal crack phenomenon.
Embodiment 4
The method that timber deep charring is carried out using 1 device of embodiment, is comprised the following steps：
（1）Selection：Timber is selected, and is cut to the plate of consistency of thickness；
（2）Vacuum drying：Gained plate is placed in the microwave field that ambient pressure is 60KPa, first controls the microwave power to be
300W until plate moisture content drops to 90~95%, closes microwave and is kept for 30 seconds；Microwave power is controlled again as 800W, until plate temperature
Degree reaches 105~110 DEG C, closes microwave and is kept for 30 seconds；Microwave power is finally controlled as 200W, until plate moisture content drops to 5
~6%；
（3）High pressure carbonizes：Saturated steam protection timber is passed through, while adjusts ambient pressure as 125KPa, and makes microwave
Power is maintained at 600W, and precompressed is then carried out to timber using hot press, and surface of heating platen temperature is 350 DEG C, is first protected with 1MPa
20min is held, then increases hot press pressure to 2MPa holdings 30min；
（4）Microwave and hot press pressure, environment exhaust decompression are closed, and Temperature fall is to 30 DEG C, you can draw off, gained charcoal
To change carbonized deep, charing homogeney is good, and without internal crack phenomenon.
Embodiment 5
The method that timber deep charring is carried out using 1 device of embodiment, is comprised the following steps：
（1）Selection：Timber is selected, and is cut to the plate of consistency of thickness；
（2）Vacuum drying：Gained plate is placed in the microwave field that ambient pressure is 75KPa, first controls the microwave power to be
400W until plate moisture content drops to 95~100%, closes microwave and is kept for 60 seconds；Microwave power is controlled again as 1000W, until plate
Temperature reaches 100~105 DEG C, closes microwave and is kept for 60 seconds；Microwave power is finally controlled as 300W, until plate moisture content drops to
7~8%；
（3）High pressure carbonizes：Saturated steam protection timber is passed through, while adjusts ambient pressure as 160KPa, and makes microwave
Power is maintained at 800W, precompressed is then carried out to timber using hot press, surface of heating platen temperature is 500 DEG C, first with 1.5MPa
10min is kept, then increases hot press pressure to 3MPa holdings 20min；
（4）Microwave and hot press pressure, environment exhaust decompression are closed, and Temperature fall is to 50 DEG C, you can draw off, gained charcoal
To change carbonized deep, charing homogeney is good, and without internal crack phenomenon.
The present invention is described in detail above in conjunction with embodiment, still, person of ordinary skill in the field can
Understand, on the premise of present inventive concept is not departed from, each design parameter in above-described embodiment can also be changed, shape
Into multiple specific embodiments, it is common excursion of the invention, is no longer described in detail one by one herein.
Claims (7)
1. the method for timber deep charring is carried out using timber deep charring device, it is characterised in that：
The timber deep charring device includes microwave office, hot press, water atomizing nozzle and barostat, and the hot press is set
The indoor middle part of the microwave is placed in, the water atomizing nozzle is arranged on the indoor top of the microwave, the barostat
It is arranged on outside the microwave office, and is connected with the microwave office；
It the described method comprises the following steps：
（1）Vacuum drying：Plate to be carbonized is placed in the microwave field that ambient pressure is 60~75KPa, first controls microwave power
For 300~400W, until plate moisture content drops to 90~100%, close microwave and kept for 30~60 seconds；The microwave power is controlled to be again
800~1000W until plate temperature reaches 100~110 DEG C, closes microwave and is kept for 30~60 seconds；The microwave power is finally controlled to be
200~300W, until plate moisture content drops to 5~8%；
（2）High pressure carbonizes：Saturated steam protection timber is passed through, while adjusts ambient pressure as 125~160KPa, and makes microwave
Power is maintained at 600~800W, then carries out precompressed to timber using hot press, first keeps 10~20min with 1~1.5MPa,
Hot press pressure is increased again to 2~3MPa holdings, 20~30min；
（3）Microwave and hot press pressure, environment exhaust decompression are closed, and Temperature fall is to 30~50 DEG C, you can draw off.
2. the method for timber deep charring according to claim 1, it is characterised in that：Step（2）The heat of the hot press
Platen surface temperature is 350~500 DEG C.
3. the method for timber deep charring according to claim 1, it is characterised in that：The hot press passes through hot pressing rack
It is fixed on the indoor middle part of the microwave.
4. the method for timber deep charring according to claim 1, it is characterised in that：The barostat includes air pump
And pressure gauge.
5. the method for timber deep charring according to claim 1, it is characterised in that：The hot press surrounding is provided with micro-
Wave producer.
6. the method for timber deep charring according to claim 5, it is characterised in that：The microwave outdoor face is provided with
Microwave controller is connected with the microwave generator signal.
7. the method for timber deep charring according to claim 1, it is characterised in that：The microwave outdoor face is provided with
Control of Hot Press Control device is connected with the hot press signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610462126.XA CN106064418B (en) | 2016-07-08 | 2016-07-08 | A kind of timber deep charring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610462126.XA CN106064418B (en) | 2016-07-08 | 2016-07-08 | A kind of timber deep charring device |
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| Publication Number | Publication Date |
|---|---|
| CN106064418A CN106064418A (en) | 2016-11-02 |
| CN106064418B true CN106064418B (en) | 2018-05-22 |
Family
ID=57420637
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2893587Y (en) * | 2006-03-28 | 2007-04-25 | 浙江世友木业有限公司 | Wood carbonization thermal processing equipment |
| CN101439529A (en) * | 2008-12-23 | 2009-05-27 | 罗玉成 | Microwave vacuum drying and carbonizing device and method for wood |
| CN101664947A (en) * | 2009-09-29 | 2010-03-10 | 东北林业大学 | Production method of carbonized wood |
| CN202922708U (en) * | 2012-10-31 | 2013-05-08 | 杜慕楠 | High-temperature pot-type wood carbonization device |
| CN103171013A (en) * | 2013-03-29 | 2013-06-26 | 安徽美源装饰科技有限公司 | Technique of wood deep carbonation |
| CN203156894U (en) * | 2013-03-29 | 2013-08-28 | 刘联合 | Microwave wood carbonizing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4010498B2 (en) * | 2002-11-25 | 2007-11-21 | 忠 宮本 | Preparation method of wood, and building, furniture, or acoustic equipment formed of wood produced by the method |
-
2016
- 2016-07-08 CN CN201610462126.XA patent/CN106064418B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2893587Y (en) * | 2006-03-28 | 2007-04-25 | 浙江世友木业有限公司 | Wood carbonization thermal processing equipment |
| CN101439529A (en) * | 2008-12-23 | 2009-05-27 | 罗玉成 | Microwave vacuum drying and carbonizing device and method for wood |
| CN101664947A (en) * | 2009-09-29 | 2010-03-10 | 东北林业大学 | Production method of carbonized wood |
| CN202922708U (en) * | 2012-10-31 | 2013-05-08 | 杜慕楠 | High-temperature pot-type wood carbonization device |
| CN103171013A (en) * | 2013-03-29 | 2013-06-26 | 安徽美源装饰科技有限公司 | Technique of wood deep carbonation |
| CN203156894U (en) * | 2013-03-29 | 2013-08-28 | 刘联合 | Microwave wood carbonizing machine |
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|---|---|
| CN106064418A (en) | 2016-11-02 |
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Effective date of registration: 20180119 Address after: 100086 Beijing city Haidian District North Sanhuan Road 43, Tsing Wun contemporary building 12A11 Applicant after: BEIJING ZHITAO SCIENCE & TECHNOLOGY CO., LTD. Address before: 432099 Hubei Polytechnic Institute School of medicine, Xiaogan, Xiaogan, Hubei Province, Hubei Polytechnic Institute Applicant before: Zheng Yuan |
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Inventor after: Chen Changhua Inventor before: Zheng Yuan |
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Effective date of registration: 20180420 Address after: 224006 88 Fenghuang Road, Yan Long Street, Yan Du District, Yancheng City, Jiangsu Applicant after: JIANGSU YOUZUN FURNITURE MANUFACTURING CO., LTD. Address before: 100086 Beijing city Haidian District North Sanhuan Road 43, Tsing Wun contemporary building 12A11 Applicant before: BEIJING ZHITAO SCIENCE & TECHNOLOGY CO., LTD. |
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Effective date of registration: 20220112 Address after: 224006 88 Fenghuang Road, Yan Long Street, Yan Du District, Yancheng City, Jiangsu province (D) Patentee after: Jiangsu thinker Education Equipment Co.,Ltd. Address before: 224006 88 Fenghuang Road, Yan Long Street, Yan Du District, Yancheng City, Jiangsu Patentee before: JIANGSU YOUZUN FURNITURE MANUFACTURING Co.,Ltd. |
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