CN107471366B - A kind of redwood dehumidification process based on inhibition cell activity - Google Patents
A kind of redwood dehumidification process based on inhibition cell activity Download PDFInfo
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- CN107471366B CN107471366B CN201710924812.9A CN201710924812A CN107471366B CN 107471366 B CN107471366 B CN 107471366B CN 201710924812 A CN201710924812 A CN 201710924812A CN 107471366 B CN107471366 B CN 107471366B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
- B27K3/10—Apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/70—Hydrophobation treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention provides a kind of based on the redwood dehumidification process for inhibiting cell activity, belongs to redwood manufacture field.Including pretreatment, shock heating quenching circulation pressurization is impregnated, heating is dry, heating wet down drying steps, it is combined by shock heating quenching temperature change and Triiodobenzoic acid, it is destroyed pectic substance and cellulolytic activity in secondary wall and intercellular layer in the cell wall of redwood cell, reduces the breathing campaign in subsequent temperature-fall period cell wall.This technique can shorten redwood drying time, and drying effect is good.
Description
Technical field
The invention belongs to redwood manufacture fields, are related to a kind of based on the redwood dehumidification process for inhibiting cell activity.
Background technique
Redwood, the general designation of high-end, the rare furniture woods of China, initially refers to red hardwood, and kind is more；In last century
After the eighties, everybody increase in demand to mahogany furniture, industry is urgently to be speculated, and country carries out redwood according to indexs such as density
Specification, redwood specification are as follows: two sections, five categories, eight classes, 33 kinds.Redwood is because of slow growth, material is hard, growth period all
More than the centuries, many redwood of south China are originated in, what Zao Ming, clear period were just cut down remains little, of today
Redwood is to originate in Southeast Asia, Africa mostly, and there are cultivation cultivation and introducing and planting in China Guangdong, Yunnan.The difference of timber heart sapwood is aobvious
Bright, sapwood is narrow, canescence；The yellowish red of heartwood becomes aubergine, certain Huanghua Pear, Burma to redness of the skin or complexion long when being exposed in air
The color of the timber such as pears, Door frame is spent not take on a red color in pasture.Wood figure is beautiful, and material is hard, durable, is valuable furniture and work
Skill artistic products etc. use material.Redwood is torrid areas pulse family wingceltis category timber, mainly originates in India, China Guangdong, Yunnan and Nan Yang group
Island also produces, and is common rare hardwood." redwood " is that Jiangsu and Zhejiang Provinces and northern popular title, one band of Guangdong are commonly called as " sour branch
Wood ".
And at present to the general flow of mahogany furniture processing are as follows: sorting, drying and processing, mortise are carved, assembling, scraped finish, on
Paint.Wherein, drying and processing is the drying steps of redwood, now with the drying means method that generallys use steam convection current, change
Wet-bulb temperature and dry-bulb temperature realize drying, and redwood timber is made of cell, and each cell is by lumen and thin again
Cell wall composition.Possessed pit on cell wall is connected with each other the lumen of each cell, constitutes big capillary piping
System；And cell wall is mainly made of microfibre, microfibre is made of protomere again, is had between microfibre and between protomere
Gap constitute microcapillary system, the moisture in timber is present among the two capillary systems.In big capillary
There is Free water in system, there is hygroscopic water in microcapillary system, under normal circumstances, redwood initially evaporates freedom when dry
Secondly water evaporates hygroscopic water, the former is realized by pit and is moved, and the latter is real by the gap between microfibre and between protomere
Now move, but the special construction of redwood is different from remaining wood structure, internal fiber is completely embedded, and global density is big, carefully
Pit and gap on cell wall are respectively less than remaining timber, bring biggish difficulty to dry, drying time very as long as.
Summary of the invention
The purpose of the present invention is being directed to the above-mentioned problems in the prior art, provide a kind of based on inhibition cell activity
Redwood dehumidification process, should based on inhibit cell activity redwood dehumidification process can shorten redwood drying time, drying effect
Good, the dry difficulty of drying process for solving existing redwood is big, and drying time waits so long problem.
Object of the invention can be realized by the following technical scheme: a kind of based on the redwood dehumidifying work for inhibiting cell activity
Skill includes the following steps:
A, it pre-processes, redwood surface is rinsed by giant after the redwood removal branches and leaves under cutting down, is rinsed extremely
Until redwood surface is splashed out without clast；
The clast on redwood surface and spot are cleaned, prevents from entering in subsequent solution and redwood surface is caused to block.
B, the pressurization of shock heating quenching circulation is impregnated, Triiodobenzoic acid powder is added in the first fermentation vat and concentration be 75% with
On ethanol water, be sufficiently stirred make Triiodobenzoic acid powder dissolve, then by it is above-mentioned through flushing redwood be completely soaked
In in the first fermentation vat, the first immersion bottom of pond portion is carried out being heated to mixed solution temperature being 65 DEG C -75 DEG C and holding constant temperature, it is right
First fermentation vat is sealed and top is there are venthole, by supercharging equipment to above-mentioned mixed solution carry out pressurization make to mix it is molten
Liquid is able to enter in redwood, boost pressure 130Mpa-150Mpa, and pressurization time is 10-12 hours；
Then the ethanol water that concentration is 40% or more is added in the second fermentation vat, above-mentioned redwood is impregnated from first
It takes out and is completely soaked in the second fermentation vat in pond, the second immersion bottom of pond portion is carried out being cooled to ethanol water temperature being zero
Lower 20 DEG C -10 DEG C subzero, the second fermentation vat is sealed and there are ventholes for top, by supercharging equipment to above-mentioned mixing
Solution, which carries out pressurization, is able to enter mixed solution in redwood, boost pressure 130Mpa-150Mpa, pressurization time 10-12
Hour；
Again above-mentioned redwood is taken out to be put into the first fermentation vat of equal conditions out of second fermentation vat and carries out same operation,
After above-mentioned redwood is put into the second fermentation vat of equal conditions from the taking-up of the first fermentation vat and carries out same operation again, repeatedly
It operates to the number that redwood is put into the first fermentation vat and the second fermentation vat and is no less than 4 times and redwood last time is impregnated from first
It is taken out in pond；
The mixing liquid of high temperature expands redwood after entering redwood inside, and the cell wall of redwood cell extends at this time,
Making the pit on cell wall, the gap between microfibre between micro- colloid becomes larger, and Triiodobenzoic acid powder is dissolved in alcohol solvent,
And there is growth inhibiting effect to cell, mixing liquid slowly enters inside redwood under the effect of the pressure, Triiodobenzoic acid
The cell wall for acting on redwood cell, is destroyed pectic substance and cellulolytic activity in secondary wall and intercellular layer in cell wall,
The breathing campaign in subsequent temperature-fall period cell wall is reduced, then the redwood of high temperature is placed in low temperature environment rapidly, suddenly
The variation of heat quenching temperature is destroyed the breathing function of cell wall further, under the action of Triiodobenzoic acid cell wall into
The subtle rebound motion of row, then redwood is played back in hot environment rapidly, the function that cell wall is repeated is lost substantially
Lose, and even permanent loss function can not be restored after a short period of time, pit at this time, between microfibre between micro- colloid gap
Size is maximum, the hygroscopic water liquid in Free water and cell wall in subsequent technique in lumen, gaseous state or steam
Redwood can be discharged in combining form faster.Ethyl alcohol also has the function of sterilizing as the organic solvent of Triiodobenzoic acid,
Ethyl alcohol, which enters inside redwood, to kill the moth inside redwood, play a protective role.In addition redwood last time from
The process for saving subsequent redwood preheating is taken out in first fermentation vat, has saved the time.Redwood last time is out of first fermentation vat
The temperature of taking-up at this time is 65 DEG C -75 DEG C and humidity is close to being saturated, and carries out shock heating quenching and recycles realization pair while pressurization is impregnated
The perfect preheating of redwood.
C, heat up drying, makes 75 DEG C -85 DEG C of temperature and humidity 65g/m3-75g/m3Humid air pass through 130Mpa-
It recycles after the pressure pressurization of 150Mpa and passes through along above-mentioned redwood thickness direction, the time is 2-3 days, and humid air travel speed is
1.5m/s-2.5m/s；
Mainly the moisture content of redwood sapwood is dried for the operation in the stage, followed by the moisture content in induction redwood heartwood
Along moisture gradient by pit, sapwood is led in gap between micro- colloid between microfibre.
D, heating wet down is dry, makes 85 DEG C -95 DEG C of temperature and humidity is 35g/m3- 45g/m3Humid air pass through
It recycles after the pressure pressurization of 130Mpa-150Mpa and passes through along above-mentioned redwood thickness direction, the time is 1-2 days, and humid air is advanced fast
Degree is 4m/s-5m/s；
The stage is mainly the induction reinforced for moisture content in redwood heartwood, makes it along moisture gradient by pit, micro-
Lead to sapwood in gap between micro- colloid between fiber, finally goes out from along through sapwood evaporation.
In a kind of above-mentioned redwood dehumidification process based on inhibition cell activity, what the Triiodobenzoic acid powder was added
Amount is to reach subject to saturation solubility in ethanol water.
The Triiodobenzoic acid of high concentration just has the inhibitory effect to cell activity.
In a kind of above-mentioned redwood dehumidification process based on inhibition cell activity, the supercharging equipment is high-pressure pump.
In a kind of above-mentioned redwood dehumidification process based on inhibition cell activity, first fermentation vat and second impregnates
It is 200Mpa that pond maximum, which bears pressure,.
In a kind of above-mentioned redwood dehumidification process based on inhibition cell activity, the increasing to redwood of the supercharging equipment
Press direction perpendicular to redwood axial direction.
Since the path of redwood thickness direction is short, solution can more easily enter in redwood.
Above-mentioned a kind of based in the redwood dehumidification process for inhibiting cell activity, redwood is every time from the first fermentation vat or the
Two fermentation vats, which took out to the time for being put into the first fermentation vat or the second fermentation vat, is no more than 10min.
The mitigation reaction time that can reduce redwood cell is arranged in this kind, makes the activity of redwood cell without restoring.
Compared with prior art, it is had the advantage that based on the redwood dehumidification process of inhibition cell activity
1, the swollen of cell wall is made by the variation of shock heating quenching temperature based on the redwood dehumidification process of inhibition cell activity
Contracting function is destroyed, and makes pit, and the size expansion in gap is maximum and do not bounce back between micro- colloid between microfibre.
2, pass through shock heating quenching temperature change and Triiodobenzoic acid knot based on the redwood dehumidification process of inhibition cell activity
It closes, is destroyed pectic substance and cellulolytic activity in secondary wall and intercellular layer in the cell wall of redwood cell, reduce rear
The breathing campaign of continuous temperature-fall period cell wall.
3, also have based on the redwood dehumidification process ethyl alcohol of inhibition cell activity as the organic solvent of Triiodobenzoic acid
The effect of sterilizing, ethyl alcohol, which enters inside redwood, to kill the moth inside redwood, play a protective role.
Specific embodiment
As a comparison using the steam drying in the current drying of wood, subjects are 10 purple elms purchased by Guangdong.
Steam drying includes the steam-injection stage (preheating), drying stage, the damping stage, (the dry subsequent adjustment stage did not opposed
Than), main contrast steams stage and drying stage spent time.
As shown in Table 1 and Table 2.
As shown in Tables 1 and 2,10 purple elms are 8.2%-9.8% via the last gained moisture content of steam seasoning,
Spent time is 12 days (not including the damping stage).
Based on inhibiting the redwood dehumidification process subjects of cell activity to be similarly 10 purple elms purchased by Guangdong, wrap
Include following steps:
A, it pre-processes, redwood surface is rinsed by giant after the redwood removal branches and leaves under cutting down, is rinsed extremely
Until redwood surface is splashed out without clast；
B, shock heating quenching circulation pressurization is impregnated, and Triiodobenzoic acid powder is added in the first fermentation vat and concentration is 80%
Ethanol water, being sufficiently stirred dissolves Triiodobenzoic acid powder, is then completely soaked above-mentioned by the redwood rinsed in the
In one fermentation vat, the first immersion bottom of pond portion is carried out being heated to mixed solution temperature being 70 DEG C and holding constant temperature, is impregnated to first
Pond is sealed and top is there are venthole, by supercharging equipment to above-mentioned mixed solution carry out pressurization enable mixed solution into
Enter in redwood, boost pressure 145Mpa, pressurization time is 10 hours；
Then the ethanol water that concentration is 50% is added in the second fermentation vat, by above-mentioned redwood out of first fermentation vat
It takes out and is completely soaked in the second fermentation vat, the second immersion bottom of pond portion is carried out being cooled to ethanol water temperature being subzero 15
DEG C, the second fermentation vat is sealed and top is there are venthole, carrying out pressurization to above-mentioned mixed solution by supercharging equipment makes
Mixed solution is able to enter in redwood, boost pressure 145Mpa, and pressurization time is 10 hours；
Again above-mentioned redwood is taken out to be put into the first fermentation vat of equal conditions out of second fermentation vat and carries out same operation,
After above-mentioned redwood is put into the second fermentation vat of equal conditions from the taking-up of the first fermentation vat and carries out same operation again, repeatedly
Operation to the number that redwood is put into the first fermentation vat is 5 times and is put into the number of the second fermentation vat to be 4 times and redwood last time
It is taken out out of first fermentation vat；
C, heat up drying, makes 80 DEG C of temperature and humidity 70g/m3Humid air by being followed after the pressurization of the pressure of 145Mpa
Ring passes through along above-mentioned redwood thickness direction, and the time is 2 days, and humid air travel speed is 2m/s；
D, heating wet down is dry, makes 90 DEG C of temperature and humidity is 40g/m3Humid air pressurizeed by the pressure of 145Mpa
After recycle and pass through along above-mentioned redwood thickness direction, the time is 1 day, and humid air travel speed is 4m/s；
By above step, the moisture content and spent time of subjects are as shown in table 3 and table 4.
It can be obtained by table 3 and table 4, the moisture content for testing timber is 8.36%-9.54%.Spent time is approximately equal to 6.8
Its (not including the damping stage), compared to having significant shortening in time by way of steam drying.
It is cured that this technique needs redwood surface after the drying to apply in following process, and redwood is added by this technique in order to prevent
The case where inner aqueous rate is easy to happen variation after work.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. it is a kind of based on the redwood dehumidification process for inhibiting cell activity, include the following steps:
A, it pre-processes, redwood surface is rinsed by giant after the redwood removal branches and leaves under cutting down, is rinsed to redwood
Until surface is splashed out without clast；
B, shock heating quenching circulation pressurization is impregnated, and Triiodobenzoic acid powder is added in the first fermentation vat and concentration is 75% or more
Ethanol water, being sufficiently stirred dissolves Triiodobenzoic acid powder, is then completely soaked above-mentioned by the redwood rinsed in the
In one fermentation vat, the first immersion bottom of pond portion is carried out being heated to mixed solution temperature being 65 DEG C -75 DEG C and holding constant temperature, to first
Fermentation vat is sealed and top is there are venthole, and carrying out pressurization to above-mentioned mixed solution by supercharging equipment enables mixed solution
Enough enter in redwood, boost pressure 130MPa-150MPa, pressurization time is 10-12 hours, and the Triiodobenzoic acid powder adds
The amount entered is to reach subject to saturation solubility in ethanol water；
Then the ethanol water that concentration is 40% or more is added in the second fermentation vat, by above-mentioned redwood out of first fermentation vat
It takes out and is completely soaked in the second fermentation vat, the second immersion bottom of pond portion is carried out being cooled to ethanol water temperature being subzero 20
DEG C-it is 10 DEG C subzero, the second fermentation vat is sealed and top is there are venthole, by supercharging equipment to above-mentioned mixed solution into
Row pressurization is able to enter mixed solution in redwood, boost pressure 130MPa-150MPa, and pressurization time is 10-12 hours；
Again above-mentioned redwood is taken out to be put into the first fermentation vat of equal conditions out of second fermentation vat and carry out same operation, finished
Above-mentioned redwood is put into the second fermentation vat of equal conditions again from the taking-up of the first fermentation vat afterwards and carries out same operation, is operated repeatedly
The number for being put into the first fermentation vat and the second fermentation vat to redwood is no less than 4 times and redwood last time is out of first fermentation vat
It takes out；
C, heat up drying, makes 75 DEG C -85 DEG C of temperature and humidity 65g/m3-75g/m3Humid air by 130MPa-150MPa
It recycles after pressure pressurization and passes through along above-mentioned redwood thickness direction, the time is 2-3 days, and humid air travel speed is 1.5m/s-2.5m/
s；
D, heating wet down is dry, makes 85 DEG C -95 DEG C of temperature and humidity is 35g/m3-45g/m3Humid air pass through 130MPa-
It recycles after the pressure pressurization of 150MPa and passes through along above-mentioned redwood thickness direction, the time is 1-2 days, and humid air travel speed is 4m/
s-5m/s。
2. according to claim 1 a kind of based on the redwood dehumidification process for inhibiting cell activity, which is characterized in that the increasing
Pressure equipment is high-pressure pump.
3. according to claim 1 a kind of based on the redwood dehumidification process for inhibiting cell activity, which is characterized in that described the
It is 200MPa that one fermentation vat and the second fermentation vat maximum, which bear pressure,.
4. according to claim 1 a kind of based on the redwood dehumidification process for inhibiting cell activity, which is characterized in that the increasing
Press the pressurization direction to redwood of equipment perpendicular to redwood axial direction.
5. according to claim 1 a kind of based on the redwood dehumidification process for inhibiting cell activity, which is characterized in that redwood is every
Secondary take out from the first fermentation vat or the second fermentation vat to the time for being put into the first fermentation vat or the second fermentation vat is no more than 10min.
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| CN111251400B (en) * | 2020-01-16 | 2022-04-26 | 北京市飞宇商贸有限公司 | Manufacturing method of redwood furniture |
| CN114789490B (en) * | 2022-04-18 | 2023-08-08 | 中山市伍氏大观园家具有限公司 | Redwood furniture production line |
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| FR2239918A5 (en) * | 1973-08-02 | 1975-02-28 | Sadi | Timber drying with varying rate of dehumidifying - and heating to suit timber humidity and prevent distortion |
| JP2828625B2 (en) * | 1996-05-27 | 1998-11-25 | 北越電建株式会社 | Wood drying method |
| CN103072166A (en) * | 2012-12-21 | 2013-05-01 | 中国林业科学研究院木材工业研究所 | Closed wood fiber drying method |
| CN104552518B (en) * | 2015-01-10 | 2016-08-24 | 陈霞 | A kind of dehumidification process of redwood |
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Effective date of registration: 20200528 Address after: No.7, Xiwu Road, Jingbei village committee, Zhangxi she autonomous Township, Dongyuan County, Heyuan City, Guangdong Province Patentee after: Wu Shanshan Address before: Xi Hong Cun 351100 Putian province Fujian City Licheng District Huangshi Town West No. 191 Patentee before: PUTIAN CITY LICHENG DISTRICT JUHUI SCIENCE & TECHNOLOGY CONSULTATION Co.,Ltd. |
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Effective date of registration: 20201119 Address after: 214000 789-806 Xueqian East Road, Wuxi, Jiangsu Province Patentee after: Yingzitang (Jiangsu) home furnishing industry Co., Ltd Address before: No.7, Xiwu Road, Jingbei village committee, Zhangxi she autonomous Township, Dongyuan County, Heyuan City, Guangdong Province Patentee before: Wu Shanshan |