CN106403506A - Drying technology for fast-growing wood - Google Patents
Drying technology for fast-growing wood Download PDFInfo
- Publication number
- CN106403506A CN106403506A CN201610764709.8A CN201610764709A CN106403506A CN 106403506 A CN106403506 A CN 106403506A CN 201610764709 A CN201610764709 A CN 201610764709A CN 106403506 A CN106403506 A CN 106403506A
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- CN
- China
- Prior art keywords
- drying
- growing wood
- wood
- fast growing
- fast
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
- F26B2210/16—Wood, e.g. lumber, timber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention belongs to the technical field of wood drying and particularly relates to a drying technology for fast-growing wood. The fast-growing wood which is overall straight from top to bottom and has the diameter being 40 mm to 70 mm is taken, the fast-growing wood is cut off, and round wood being 300 mm to 550 mm is formed through cutting; the round wood is put into a drying device containing dry pellets and wet pellets to be dried; the round wood is put into a vacuum drying machine to be subjected to vacuum drying; and the round wood is put into a steaming device to be subjected to steam humidifying treatment. According to the drying technology, the drying device containing the dry pellets and the wet pellets is firstly used for drying the fast-growing wood, then the vacuum drying machine is used for conducting drying, the drying cost can be effectively saved, in addition, the drying time of the fast-growing wood is greatly shortened, and the processing efficiency is improved.
Description
Technical field
A kind of the present invention relates to Wood Drying Technology field, it particularly relates to drying process of fast growing wood.
Background technology
At present, solid wood material is how based on large diameter tree material.Coming from virgin forest resource large diameter tree material, large diameter tree material is supplied more
Fewer and feweri.For solving the deficiency of wood supply, various countries start to carry forward vigorously the plantation of artificial fast-growing woods.China has become the world
Artificial fast-growing woods cultivated area is most, the maximum country of fast growing wood accumulation.Fast growing wood growth year is short, can adopt within general 4～8 years
Cut down.Because growth is fast, timber diameter is relatively small, particularly substantial amounts of treetop material, and diameter is generally less than 10cm.These small dimension woods by
Utilize in solid woodization cannot be realized, be widely used in manufacture particieboard, density board and paper pulp.The existing processing of fast-growing small dimension wood
Using by being that first saw is made as sawn timber, re-dry.Because fast-growing small dimension wood growth stress is big, each big to dry shrinkage difference, when being dried
It is particularly easy to deform, cause timber utilization rate little, raise the price of small dimension wood.Directly fast growing wood is dried, fast-growing wood
Material slow drying speed, wood internal moisture content difference is big, and easy generation table splits and the problems such as end check.
Content of the invention
In view of this, it is an object of the invention to provide a kind of drying process of fast growing wood, to solve existing fast growing wood
Drying is yielding, slow drying speed, inner aqueous rate difference are big, easy table splits and the problems such as end check.
The present invention solves above-mentioned technical problem by the following technical programs：
A kind of drying process of fast growing wood, comprises the following steps：
(1) fracture：Round body and lead to straight and diameter 40～70mm fast growing wood, fast growing wood is blocked, is broken into 300
The roundwood of～550mm；
(2) primary drying：By roundwood be placed in set and in dry bulb and the drying equipment of wet bulb, be dried process, drying completes
The water content of roundwood is 30～40% afterwards；
(3) redrying：Roundwood is placed in vacuum drier and is vacuum dried, the dry moisture to roundwood is
7～15%；
(4) damping：Former material is placed in decatizing apparatus and carries out decatize conditioning, after process, the moisture of roundwood is 8
～16%.
In described step (1), round body and lead to straight and diameter 55mm fast growing wood, fast growing wood is blocked, is broken into
The roundwood of 400mm.
In described step (2), keep 50～60 DEG C of dry-bulb temperature in drying machine, 40～45 DEG C of wet bulb temperature, drying time
For 100～120h.
In described step (3), the absolute pressure in vacuum drier is controlled to be 0.03～0.05MPa, baking temperature is 62
～68 DEG C, drying time is 20～30h.
In described step (4), temperature control during conditioning is 95～105 DEG C, and process time is 120～180min.
The beneficial effects of the present invention is：
Firstly, for the drying of fast growing wood, deform, table splits and occurs mainly in the later stage of drying with end check, the present invention passes through
First using the interior drying equipment setting dry bulb and wet bulb by fast growing wood drying to its moisture as 30～40%, now fast-growing wood
Material is not deformed substantially, table splits situation with end check, is then vacuum dried fast growing wood, the results showed, work as wood
After material is dried to a certain extent, vacuum drying technique will not make the new table of fast growing wood generation split and hold at a suitable temperature
Split, thus effectively solve existing fast growing wood be dried existing yielding, speed is slow, inner aqueous rate difference is big,
Table splits and the problems such as end check.
Secondly, the present invention passes through first to set dry bulb and the drying equipment of wet bulb is dried to fast growing wood using interior, then
Be dried with vacuum drier again, can not only efficient drying cost-effective, but also substantially reduce the dry of fast growing wood
The dry time, improve working (machining) efficiency.
Again, the present invention carries out damping using decatize technology to dried fast growing wood, not only substantially reduces damping
Time, and pass through decatize conditioning, before the tiny deformation that produces in dry run, table split with end check obtain extensive
Multiple, substantially increase the dry mass of fast growing wood.
Specific embodiment
Those skilled in the art understands for convenience, below in conjunction with embodiment and accompanying drawing, the present invention is done further
Description.Embodiment is only illustration to this invention, is not limitation of the invention, does not make to illustrate in embodiment
Step is all prior art, and here is not described in detail.
Embodiment one
A kind of drying process of fast growing wood, comprises the following steps：
(1) fracture：Round body and lead to straight and diameter 40mm fast growing wood, fast growing wood is blocked, is broken into 300mm's
Roundwood；
(2) primary drying：By roundwood be placed in set and in dry bulb and the drying equipment of wet bulb, be dried process, keep drying
50 DEG C of dry-bulb temperature in machine, 40 DEG C of wet bulb temperature, drying time is 100h, and after the completion of being dried, the water content of roundwood is 40%；
(3) redrying：Roundwood is placed in vacuum drier and is vacuum dried, control absolute in vacuum drier
Pressure is 0.03MPa, and baking temperature is 62 DEG C, and drying time is 20h, and being dried to the moisture of roundwood is 15%；
(4) damping：Former material is placed in decatizing apparatus and carries out decatize conditioning, temperature control during conditioning is 95
DEG C, process time is 120min, and after process, the moisture of roundwood is 16%.
Embodiment two
A kind of drying process of fast growing wood, comprises the following steps：
(1) fracture：Round body and lead to straight and diameter 70mm fast growing wood, fast growing wood is blocked, is broken into 550mm's
Roundwood；
(2) primary drying：By roundwood be placed in set and in dry bulb and the drying equipment of wet bulb, be dried process, keep drying
60 DEG C of dry-bulb temperature in machine, 45 DEG C of wet bulb temperature, drying time is 120h, and after the completion of being dried, the water content of roundwood is 30%；
(3) redrying：Roundwood is placed in vacuum drier and is vacuum dried, control absolute in vacuum drier
Pressure is 0.05MPa, and baking temperature is 68 DEG C, and drying time is 30h, and being dried to the moisture of roundwood is 7%；
(4) damping：Former material is placed in decatizing apparatus and carries out decatize conditioning, temperature control during conditioning is
105 DEG C, process time is 180min, and after process, the moisture of roundwood is 8%.
Embodiment three
A kind of drying process of fast growing wood, comprises the following steps：
(1) fracture：Round body and lead to straight and diameter 55mm fast growing wood, fast growing wood is blocked, is broken into 400mm's
Roundwood；
(2) primary drying：By roundwood be placed in set and in dry bulb and the drying equipment of wet bulb, be dried process, keep drying
55 DEG C of dry-bulb temperature in machine, 42 DEG C of wet bulb temperature, drying time is 110h, and after the completion of being dried, the water content of roundwood is 34%；
(3) redrying：Roundwood is placed in vacuum drier and is vacuum dried, control absolute in vacuum drier
Pressure is 0.04MPa, and baking temperature is 65 DEG C, and drying time is 25h, and being dried to the moisture of roundwood is 11%；
(4) damping：Former material is placed in decatizing apparatus and carries out decatize conditioning, temperature control during conditioning is
100 DEG C, process time is 150min, and after process, the moisture of roundwood is 12%.
Implementation result：Using GB-T6491-2012 Drying quality of sawn timber standard test method to dried of the present invention after
Fast growing wood be dried quality testing, result such as following table：
| Detection project | Detected value | Grade | Respective level index | Explanation |
| Drying uniformity | ±2 | One-level | ±3 | -- |
| Moisture content deviation on thickness | 1.1 | One-level | Less than 2.0 | -- |
| Residual stress index | 0 | One-level | Less than 2.5 | Prong method |
Claims (5)
1. a kind of drying process of fast growing wood is it is characterised in that comprise the following steps：
(1) fracture：Round body and lead to straight and diameter 40～70mm fast growing wood, fast growing wood is blocked, it is broken into 300～
The roundwood of 550mm；
(2) primary drying：By roundwood be placed in set and in dry bulb and the drying equipment of wet bulb, be dried process, circle after the completion of being dried
The water content of material is 30～40%；
(3) redrying：Roundwood is placed in vacuum drier and is vacuum dried, be dried to roundwood moisture be 7～
15%；
(4) damping：Former material is placed in decatizing apparatus and carries out decatize conditioning, after process the moisture of roundwood be 8～
16%.
2. fast growing wood as claimed in claim 1 drying process it is characterised in that：In described step (1), round body and lead to directly
And the fast growing wood of diameter 55mm, fast growing wood is blocked, is broken into the roundwood of 400mm.
3. fast growing wood as claimed in claim 1 drying process it is characterised in that：In described step (2), keep drying machine
50～60 DEG C of interior dry-bulb temperature, 40～45 DEG C of wet bulb temperature, drying time is 100～120h.
4. fast growing wood as claimed in claim 1 drying process it is characterised in that：In described step (3), vacuum is controlled to do
Absolute pressure in dry machine is 0.03～0.05MPa, and baking temperature is 62～68 DEG C, and drying time is 20～30h.
5. fast growing wood as claimed in claim 1 drying process it is characterised in that：In described step (4), during conditioning
Temperature control be 95～105 DEG C, process time be 120～180min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764709.8A CN106403506A (en) | 2016-08-30 | 2016-08-30 | Drying technology for fast-growing wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764709.8A CN106403506A (en) | 2016-08-30 | 2016-08-30 | Drying technology for fast-growing wood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106403506A true CN106403506A (en) | 2017-02-15 |
Family
ID=58002787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610764709.8A Pending CN106403506A (en) | 2016-08-30 | 2016-08-30 | Drying technology for fast-growing wood |
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| CN (1) | CN106403506A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900759A (en) * | 2019-12-12 | 2020-03-24 | 沈志荣 | Drying process of log sawn timber |
| CN110986489A (en) * | 2019-12-10 | 2020-04-10 | 杨艳艳 | Anti-cracking log drying method |
| CN112378170A (en) * | 2020-10-27 | 2021-02-19 | 北京林业大学 | Small-diameter wood solid wood utilization method |
| CN116674314A (en) * | 2023-05-16 | 2023-09-01 | 江苏康程新材料科技有限公司 | Novel wooden mosaic decorative board and production method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2681220B2 (en) * | 1989-08-28 | 1997-11-26 | 兵五 泉 | Multiple dyeing method using variable pressure air stream of superheated steam |
| JP3149743U (en) * | 2009-01-30 | 2009-04-09 | 株式会社アイ電子工業 | Oga powder dryer |
| CN102178191A (en) * | 2011-04-25 | 2011-09-14 | 史明超 | Preparation method of pure natural jujube powder |
| CN104526804A (en) * | 2014-12-30 | 2015-04-22 | 广州好莱客创意家居股份有限公司 | Manufacturing method for impregnated wood and preparation method for impregnating resin |
| CN104526803A (en) * | 2014-12-30 | 2015-04-22 | 广州好莱客创意家居股份有限公司 | Surface-impregnated wood and preparing method thereof |
| CN104985657A (en) * | 2015-07-06 | 2015-10-21 | 中南林业科技大学 | Enhanced high-temperature heat treated wood and manufacturing method thereof |
| WO2015181769A1 (en) * | 2014-05-29 | 2015-12-03 | Biotech S.R.L. | Method for transforming waste and system for performing said method |
| CN105276930A (en) * | 2015-10-28 | 2016-01-27 | 南京林业大学 | Method for inhibiting dry shrinking of timber |
| CN105710944A (en) * | 2016-03-07 | 2016-06-29 | 贺州市恒达板业有限公司 | Drying method of small-diameter fast-growing timber |
-
2016
- 2016-08-30 CN CN201610764709.8A patent/CN106403506A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2681220B2 (en) * | 1989-08-28 | 1997-11-26 | 兵五 泉 | Multiple dyeing method using variable pressure air stream of superheated steam |
| JP3149743U (en) * | 2009-01-30 | 2009-04-09 | 株式会社アイ電子工業 | Oga powder dryer |
| CN102178191A (en) * | 2011-04-25 | 2011-09-14 | 史明超 | Preparation method of pure natural jujube powder |
| WO2015181769A1 (en) * | 2014-05-29 | 2015-12-03 | Biotech S.R.L. | Method for transforming waste and system for performing said method |
| CN104526804A (en) * | 2014-12-30 | 2015-04-22 | 广州好莱客创意家居股份有限公司 | Manufacturing method for impregnated wood and preparation method for impregnating resin |
| CN104526803A (en) * | 2014-12-30 | 2015-04-22 | 广州好莱客创意家居股份有限公司 | Surface-impregnated wood and preparing method thereof |
| CN104985657A (en) * | 2015-07-06 | 2015-10-21 | 中南林业科技大学 | Enhanced high-temperature heat treated wood and manufacturing method thereof |
| CN105276930A (en) * | 2015-10-28 | 2016-01-27 | 南京林业大学 | Method for inhibiting dry shrinking of timber |
| CN105710944A (en) * | 2016-03-07 | 2016-06-29 | 贺州市恒达板业有限公司 | Drying method of small-diameter fast-growing timber |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986489A (en) * | 2019-12-10 | 2020-04-10 | 杨艳艳 | Anti-cracking log drying method |
| CN110900759A (en) * | 2019-12-12 | 2020-03-24 | 沈志荣 | Drying process of log sawn timber |
| CN112378170A (en) * | 2020-10-27 | 2021-02-19 | 北京林业大学 | Small-diameter wood solid wood utilization method |
| CN116674314A (en) * | 2023-05-16 | 2023-09-01 | 江苏康程新材料科技有限公司 | Novel wooden mosaic decorative board and production method thereof |
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Application publication date: 20170215 |
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| RJ01 | Rejection of invention patent application after publication |