CN1204569A - Method and equipment for pinewood degreasing modification - Google Patents
Method and equipment for pinewood degreasing modification Download PDFInfo
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- CN1204569A CN1204569A CN 98107213 CN98107213A CN1204569A CN 1204569 A CN1204569 A CN 1204569A CN 98107213 CN98107213 CN 98107213 CN 98107213 A CN98107213 A CN 98107213A CN 1204569 A CN1204569 A CN 1204569A
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Abstract
A pine oleoresin removing method for modifying pine wood includes treating the pine wood in specially prepared chemical liquid at a certain temp and pressure for a certain time and steam drying. Its apparatus is composed of heating-pressurizing vacuum degreasing tank, pumpstation water tank and steam drying kiln. Said pumpstation water tank consists of vacuum tank, vacuum pump, pressure pump and clean water pump.
Description
The present invention relates to a kind of method and apparatus of pinewood degreasing modification.
The pine resource of our country is very abundant, mostly particularly southern for many years each province green barren hill is the plantation masson pine, these forests all become a useful person, add that precious broadleaf is fewer and feweri, are the problem of pendulum in our front so how to have developed pine.Pine is owing to be rich in rosin, can not sanding, painted and paint, and perfectly straight although it has timber, advantage such as unity and coherence in writing is rough clear, and material hardness is medium, and mechanical strength is good, but can only work as clad plate, mould plate usefulness.But, if can be good at carrying out the degreasing of pine, overcome the inferior position of pine, bring into play its advantage, just can improve the value of pine greatly.Yet, domestic production method and the complete set of equipments that extensive degreasing pinewoods is not arranged as yet, some place at home at present has and adopts following method to come to degreasing pinewoods: (1), boil the deal board square bar with limewash liquid and come degreasing; (2), add aqueous solution of urea with soda ash and boil the degreasing of deal board square bar; (3), the method degreasing of when the drying of wood, steaming with spray.For method (1) and (2) existing problem is to make pine reach surperficial degreasing, and thermal energy consumption is big, causes processing cost significantly to rise, and work under bad environment is seriously polluted; For method (3), its shortcoming is to realize pine surface degreasing, and be difficult to reach pine surface degreasing unanimity in the operating process, the plate of the place that the parting bead that usually is dried is from the teeth outwards pushed down, material buttress middle part takes off weakerly, and this method is relatively poor to the degreasing effect on the movable joint in addition.So all failing to obtain excellent popularization, above three kinds of methods use.Recognize three pieces of relevant documents through domestic technical magazine is carried out retrieval and inquisition: 1 piece is " pine class plate square bar, dynamic shallow the stating of veneer defatting technology both at home and abroad " that is published on the 2nd phase of nineteen ninety " Fujian Province's forestry science and technology ", and this article has been narrated three kinds of degreasing process routes: first kind is organic solvent extraction.This method is because of the cost height, and environment and security performance are poor, thereby industrial using value is little.Second kind is steam distillation.The author thinks that the practical application effect of this kind degreasing method awaits further to study and have consultations with.The third is a chemical agent degreasing method.This article is introduced, and the useful nitrogen base aqueous solution is handled the method for degreasing, but produces in fact application difficult; The common chemical medicament is an alkali lye, and this method can degreasing, but the problem that makes timber blackening, mechanical property variation is arranged, aspect the selection and rational formula of chemical agent, so far still among constantly studying and exploring.According to this article also, authors filter out TSA type organic water-soluble degreasing agent the deal board square bar are carried out the CHZ PROCESS FOR TREATMENT, and degreasing rate is 50%.The 2nd piece is " the masson pine timber degreasing new technology " that is published on 1 phase of nineteen ninety " furniture " magazine, and this article has generally proposed a kind of employing C-4# degreasing agent and the C2P1h1 treatment process carries out degreasing method to masson pine.The 3rd piece is " the masson pine veneer degreasing experimental study " that is published on the 1st phase of nineteen ninety " Fujian Province's forestry science and technology " magazine, and this article has proposed employing TSA type degreasing agent and CH2+PB technology is carried out degreasing to the masson pine veneer, and degreasing rate reaches about 50%.
Through domestic patent is retrieved, find three relevant patent applications that relate to degreasing process and equipment, be respectively: notification number is that 1031958 " compounding method of plasticized masson pine wood ", the patent No. are that 88201203 " timber degreasing still " and notification number are 1034885 " larch become a useful person soda ash, urea liquid water liquid heat treatment modified technique and device ".Notification number is that 1031958 the disclosed method of document is to select for use macromolecular compound as plastifying liquid, adopting the method for top layer degreasing, top layer plasticizing to obtain a kind of novel timber--plastics complexification material has been not real pine and adopt the final timber that gets of this method; The patent No. be 88201203 and notification number be that the disclosed equipment of document and its degreasing effect of method of 1034885 are all not ideal enough.
The integrated approach and the equipment thereof that the purpose of this invention is to provide a kind of pine soup processing-steam drying degreasing modification.
The object of the present invention is achieved like this:
Pinewood degreasing modification method of the present invention comprises the content of two aspects, and promptly soup the processing stage and the steam drying stage, the technological process of soup processing procedure is: advance jar-initial vacuum-feed liquor-heating-pressurization-backflow-cooling-discharge opeing-final vacuum-balance-go out jar; The technological process of steam drying process is: stacking-advance kiln-drying-kiln discharge, the method is characterized in that in soup processing procedure feed liquor operation, what adopt is inorganic chemistry solution, and the composition of soup and prescription (by weight) are made up of 1 ‰-2.5 ‰ soda ash, 1 ‰-2.5 ‰ bleaching powder and 2 ‰-4 ‰ Nacls.
According to the concrete condition of pine (as containing what of fat, color of pine and material etc.), in above-mentioned formula range, select best prescription.At first carry out the soup processing procedure:
The pine of need degreasing is placed in the enclosed vacuum heating pressurization degreasing tank (advancing a jar operation); Need vacuumize before handling carrying out soup, the air in the pine lumen be extracted out, so that can allow soup better reach the purpose (initial vacuum operation) of degreasing; After exhausting the initial vacuum, soup is squeezed into (feed liquor operation) in the degreasing tank; Feed steam then and heat (heating process), the temperature of heating is controlled in 80 ℃-120 ℃ the scope, thin timber, and heating-up temperature can be hanged down; Thick timber, the temperature of heating can be higher, and the time of heating was controlled in 60-120 minute, thin timber, can lack heat time heating time, thick timber, the time of heating can be grown a bit; In order to make soup can enter the inside of pine, in heating, also to carry out pressurized treatments (pressurization operation) to degreasing tank, pressure is controlled in the scope of 0.1 MPa (MPa)-0.4 MPa (MPa), also be to adjust according to the thickness of pine, be thick timber, the pressure of pressurization needs higher; After the pine heating pressurized treatments, will outside the reacted soup drain tank of degreasing, flow back in the medical solution pool (reflow process); Inject cold water then and advance in the jar, tank body and pine are cooled off (refrigerating work procedure); When temperature is reduced to 40 ℃, the cooling water (discharge opeing operation) in the drain tank; And then vacuumize, the soup that the pine surface is unnecessary is extracted (final vacuum) out; Then carry out a jar internal pressure balance (balance operation); At last, pine is pulled out jar outer (going out a jar operation).So far finish soup the processing stage.
And then carry out the steam drying process: will carry out stacking (stacking operation) through the pine that soup is handled; Place in the steam drying kiln (advancing firer's preface); Carry out drying according to following drying schedule;
Spray is steamed four times in whole dry run, and promptly early stage spray is steamed, and (when moisture content is reduced to fibre saturated point 30%) steamed in spray for the first time, and (moisture content was reduced to) steamed in spray for the second time at 20% o'clock, and (moisture content was reduced to) (drying process) steamed in the spray that ends at 12% o'clock; Last kiln discharge (kiln discharge operation).At this moment whole pinewood degreasing modification processes are finished.
| Drying stage | Pine moisture content (%) | Dry-bulb temperature (℃) | Wet-bulb temperature (℃) | Relative temperature % | EMC(％) |
| 1 | More than 40 | 75 | 71 | 84 | 13．1 |
| 2 | 40-30 | 80 | 75 | 80 | 11．6 |
| 3 | 30-25 | 85 | 78 | 75 | 9．7 |
| 4 | 25-20 | 90 | 80 | 60 | 7．9 |
| 5 | 20-15 | 95 | 78 | 51 | 5．3 |
| 6 | Below 15 | 100 | 78 | 42 | 4．3 |
According to idea in the past, after pine is handled through soup, even if the degreasing success, so ignored dry (particularly steam drying) degreasing to pine.In fact the pine after handling through soup in the steam drying process, except the effect of the moisture content of general reduction timber, also has the effect of degreasing.The degreasing pine is in the steam drying process, since the intensification of timber, the turpentine oil of pine that constantly volatilizees, and the most of rosin in the pine are solidified gradually.
The equipment that is exclusively used in pinewood degreasing modification of the present invention, this equipment is made up of three parts, i.e. the heating in vacuum degreasing tank that pressurizes, pumping plant water tank and steam drying kiln is characterized in that the pumping plant water tank is made up of vacuum tank, vavuum pump, compression pump, clarified water pump.
Heating in vacuum pressurization degreasing tank and pumping plant water tank play the soup degreasing to pine jointly, and heating in vacuum pressurization degreasing tank and pumping plant water tank are made of following system respectively:
(1), the tank body that has the automatic door of O-ring seal and temperature, pressure, vacuum display device.
(2), heating and silene system: water back and valve and silencing means.
(3), compression system: compression pump, pressure pipeline and valve, pumping plant water tank.
(4), vacuum system: vacuum pipe and valve, pumping plant water tank.
(5), advance drainage system: advance Drainage pipe and valve.
(6), cooling system: clarified water pump, pipeline and valve.
The steam drying kiln is that the pine after handling through soup is carried out drying, and to reach the purpose of strengthening the degreasing pinewoods effect, it is made of following system:
(1), switch oil pressure gantry crane, gantry crane track in wicket and the kiln.
(2), heating system: heating track and valve, radiator, steam trap.
(3), relative humidity control system: skylight, skylight connecting rod and actuator, steam spray pipe road and valve.
(4), the drying medium circulatory system: invertibity axial flow blower and high-temp resisting high-humidity resisting motor.
Adopt the method and apparatus of pinewood degreasing modification of the present invention, its degreasing effect is better than the degreasing of general soup degreasing method far away, and the pine after method and apparatus of the present invention carries out degreasing also can be used as furniture, decorative sheet and other core-board.Employing of the present invention has profound significance for the pine resource that makes full use of China's abundant.
Below in conjunction with accompanying drawing, the most preferred embodiment of method and apparatus of the present invention is elaborated.
Fig. 1 is the method process chart of pinewood degreasing modification of the present invention;
Fig. 2 is a device structure schematic diagram of the present invention;
Fig. 3 is the structural representation of heating in vacuum pressurization degreasing tank;
Fig. 4 is the structural representation of pumping plant water tank;
Fig. 5 is the structural representation of steam drying kiln.
Be to adopt the implementation process of method and apparatus of the present invention below to the thick pinewood degreasing modification of 5cm:
At first, handle soup according to following prescription by weight preparation: 1.5 ‰ soda ash, 1 ‰ bleaching powder and 3 ‰ Nacls, other composition are water, and the processing soup that will prepare is then poured in the liquid storage tank 1 under the degreasing tank.
1), the pine that will desire degreasing is contained in and embraces on the material car, breakdown jar door 6, timber pushed jar in 3, shut a jar door 6.
2), open vacuum valve 16, shut other valve, start the 19 dozens of initial vacuums of vavuum pump on the pumping plant water tank 5, air is extracted out through vacuum tube 4 in jar, when the vacuum meter on the jar 7 shows-0.08 to-0.1, keeps 15 minutes, after finish the initial vacuum, vavuum pump 19 works on, breakdown combination valve 13, under the atmospheric pressure effect, handle the medical solution pool of soup under the tank body enter jar by pipeline in 3.
3), when soup enters the vacuum tank 15 of pumping plant water tank 5, close vavuum pump 19 and combination valve 13, begin heating pressurization.Slowly open heating valve 2 and water back 14 and starting pressure pump 20 this moment and open pressure valve 18, timber in the jar is heated and pressurizes, heating steam enters in the jar from water back 14, and the pressurization soup enters in the jar from pressure pipeline 9, and jar internal pressure and temperature slowly rise.Note Pressure gauge 10 and thermometer 8 on the jar.Heating and temperature control is at 120 ℃, and pressure is 0.4MPa.
4), when heating pressurized treatments after 100 minutes, close heating valve 2 and compression pump 20, start combination valve 13 and air inlet and exhaust valve 17, the soup drain tank in jar flows back in the medical solution pool outward, but repeated multiple times is used.
5), observe the water level meter 12 on jar limit, no soup in jar is closed combination valve 13, starts clarified water pump 21, advances in the jar to cool off through cooling water pipeline 11 injection cold water.Close clarified water pump 21 when the thermometer on the jar shows 40 ℃, cooling stops, and breakdown combination valve 13 is outside the cooling water drain tank.
6), observe the water level meter 12 on jar limit, after cooling water arrange, close combination valve 13, close air inlet and exhaust valve 17, startup vavuum pump 19 carries out the final vacuum processing.
7), behind the final vacuum 15-20 minute, close vavuum pump 19 and open air inlet and exhaust valve 17, this moment, a jar outer air entered in the jar, jar inner and outer air pressure unanimity, i.e. equilibrium stage.
8), behind the equilibrium stage number minute, breakdown jar door is pulled out the degreasing pine, soup processing so far finishes.
9), the pine after soup is handled, with parting bead separate, stacking, with wicket 29 breakdowns, the material buttress is sent into fork truck or dry wood car and is carried out drying in the steam drying kiln with gantry crane 28.Steam enters radiator 25 through water back 24, radiator 25 constantly heats up and dispels the heat, make the atmosphere temperature rising in the kiln, hot-air in the kiln constantly passes to timber with temperature as drying medium, timber is heated up and transpiring moisture, the water vapour of timber evaporation 27 expels from kiln from the skylight, thereby reaches the purpose of desiccated wood.For air dielectric in the kiln being evenly distributed and accelerating the discharge of damp and hot vapour, the axial flow blower 26 of invertibity high-temp resisting high-humidity resisting has been installed at the top of kiln, in order effectively to control the relative humidity in the kiln, steam spray pipe 22 has been installed in kiln, after the steam cooling through radiator 25, expel from kiln through condensation pipe 23.In whole dry run, must strict requirement spray steaming, heat according to drying schedule, when moisture content reduces to 12%, the dry end, after processing is steamed in the spray of end of a period balance, degreasing pine kiln discharge.At this moment whole skimming processes finishes.
Use the present invention carries out degreasing to masson pine Processes and apparatus through the site test of Hunan Province's forestry company, degreasing effect is excellent, consistently thinks that the masson pine after degreasing of the present invention can replace making furniture from the A level deal board square bar of the U.S. or New Zealand's import.
Claims (6)
1, a kind of method of pinewood degreasing modification, this method comprises soup processing procedure and steam drying process, the technological process of soup processing procedure comprises: advance jar-initial vacuum-feed liquor-heating-pressurization-backflow-cooling-discharge opeing-final vacuum-balance-go out jar, the technological process of steam drying process comprises: stacking-advance kiln-drying-kiln discharge, it is characterized in that in soup processing procedure feed liquor operation, the compositing formula of its soup is (by weight): 1 ‰-2.5 ‰ soda ash, 1 ‰-2.5 ‰ bleaching powder, 2 ‰-4 ‰ Nacls, other composition is a water.
2, the method for pinewood degreasing modification according to claim 1 is characterized in that in the heating process of soup processing procedure, and the temperature of its heating generally is controlled in 80 ℃-120 ℃ the scope.
3, the method for pinewood degreasing modification according to claim 1 is characterized in that in the heating process of soup processing procedure, generally be controlled in 60-120 minute its heat time heating time.
4, the method for pinewood degreasing modification according to claim 1 is characterized in that heating also will be carried out pressurized treatments to degreasing tank simultaneously in soup processing procedure heating process, and pressure is controlled at the scope of 0.1 MPa (MPa) to 0.4 MPa (MPa).
5, the method for pinewood degreasing modification according to claim 1, it is characterized in that in the steam drying process, spray is steamed four times altogether, promptly early stage spray is steamed, (when moisture content is reduced to fibre saturated point 30%) steamed in spray for the first time, (moisture content reduces to 20%) steamed in spray for the second time, and (moisture content was reduced to) steamed in the spray that ends at 12% o'clock, and the steam drying benchmark is:
Drying stage Pine moisture content (%) Dry-bulb temperature (℃) Wet-bulb temperature (℃) Relative humidity % EMC(％)
1 More than 40 75 71 84 13．1
2 40-30 80 75 80 11．6
3 30-25 85 78 75 9．7
4 25-20 90 80 60 7．9
5 20-15 95 78 51 5．3
6 Below 15 100 78 42 4．3
6, a kind of equipment that is exclusively used in the described method of claim 1, this equipment is made up of pressurize degreasing tank (3), pumping plant water tank (5) and vapour seasoning kiln of heating in vacuum, it is characterized in that this pumping plant water tank (5) is made up of vacuum tank (15), vavuum pump (19), compression pump (20) and clarified water pump (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98107213A CN1089662C (en) | 1998-04-10 | 1998-04-10 | Method and equipment for pinewood degreasing modification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98107213A CN1089662C (en) | 1998-04-10 | 1998-04-10 | Method and equipment for pinewood degreasing modification |
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| Publication Number | Publication Date |
|---|---|
| CN1204569A true CN1204569A (en) | 1999-01-13 |
| CN1089662C CN1089662C (en) | 2002-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98107213A Expired - Fee Related CN1089662C (en) | 1998-04-10 | 1998-04-10 | Method and equipment for pinewood degreasing modification |
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| Country | Link |
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| CN (1) | CN1089662C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089054C (en) * | 1999-05-28 | 2002-08-14 | 张昌荣 | Degreasing agent for pine under ordinary pressure |
| CN100455418C (en) * | 2005-02-07 | 2009-01-28 | 陈万利 | Wooden modifying apparatuses |
| CN102837343A (en) * | 2012-08-29 | 2012-12-26 | 中南林业科技大学 | Degreasing method for pines |
| CN109834799A (en) * | 2019-04-08 | 2019-06-04 | 浙江优尼家装饰科技有限公司 | A kind of rosin minimizing technology |
| CN110116445A (en) * | 2019-05-07 | 2019-08-13 | 上海懂家实业有限公司 | The degreasing method on secondary degreasing floor |
| CN111360962A (en) * | 2020-03-25 | 2020-07-03 | 南京林业大学 | Bamboo timber high-temperature steam softening device |
| CN111823352A (en) * | 2020-07-24 | 2020-10-27 | 绿材高科技术(宁波)有限公司 | Safe case |
| CN115889319A (en) * | 2022-12-21 | 2023-04-04 | 立邦涂料（重庆）化工有限公司 | Degreasing equipment and degreasing method thereof before coating of plates |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034885A (en) * | 1988-01-30 | 1989-08-23 | 抚顺市林业科学研究所 | Larch become a useful person soda ash, urea liquid hydrothermal treatment consists modified technique and device |
-
1998
- 1998-04-10 CN CN98107213A patent/CN1089662C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089054C (en) * | 1999-05-28 | 2002-08-14 | 张昌荣 | Degreasing agent for pine under ordinary pressure |
| CN100455418C (en) * | 2005-02-07 | 2009-01-28 | 陈万利 | Wooden modifying apparatuses |
| CN102837343A (en) * | 2012-08-29 | 2012-12-26 | 中南林业科技大学 | Degreasing method for pines |
| CN102837343B (en) * | 2012-08-29 | 2015-04-08 | 中南林业科技大学 | Degreasing method for pines |
| CN109834799A (en) * | 2019-04-08 | 2019-06-04 | 浙江优尼家装饰科技有限公司 | A kind of rosin minimizing technology |
| CN110116445A (en) * | 2019-05-07 | 2019-08-13 | 上海懂家实业有限公司 | The degreasing method on secondary degreasing floor |
| CN111360962A (en) * | 2020-03-25 | 2020-07-03 | 南京林业大学 | Bamboo timber high-temperature steam softening device |
| CN111823352A (en) * | 2020-07-24 | 2020-10-27 | 绿材高科技术(宁波)有限公司 | Safe case |
| CN115889319A (en) * | 2022-12-21 | 2023-04-04 | 立邦涂料（重庆）化工有限公司 | Degreasing equipment and degreasing method thereof before coating of plates |
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| Publication number | Publication date |
|---|---|
| CN1089662C (en) | 2002-08-28 |
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