CN1069441A - The wood preservation method that the jet-steam and exhausting gas cold soaking is handled - Google Patents
The wood preservation method that the jet-steam and exhausting gas cold soaking is handled Download PDFInfo
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- CN1069441A CN1069441A CN 91105756 CN91105756A CN1069441A CN 1069441 A CN1069441 A CN 1069441A CN 91105756 CN91105756 CN 91105756 CN 91105756 A CN91105756 A CN 91105756A CN 1069441 A CN1069441 A CN 1069441A
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Abstract
The wood preservation method that the jet-steam and exhausting gas cold soaking is handled.The present invention feeds superheated steam with timber in material tank, utilize spray to steam and make moisture vaporization in the timber, and air in the wood cell is driven out of, and the cooling back forms vacuum, automatically antiseptic solution is sucked timber inside, reaches and soaks into purpose.Do not need after this method spray is steamed timber taken out of from process tank and move into, can reach cooling timber yet and remove the effect of condensate liquid, alleviated labour intensity greatly, improved condition of work.With potassium permanganate impregnating fluid is carried out oxidation regeneration and avoided " sludge " pollution environment.
Description
The invention belongs to a kind of the preservation of timber against decay method, be specifically related to use the full-cell process of waterborne-type preservation.
As everyone knows, timber is closely bound up with human life.For solving the preservation of timber against decay problem, people have carried out continuous exploration and research from ancient times to the present, have created numerous methods.Wherein, existing full-cell process is to adopt the vacuum pressure method, and processed timber is packed into behind the process tank, vacuumizes earlier, then imports anticorrisive agent submergence timber, and in order to improve treatment effect, the employing that has vacuumizes or pressurization again and again; What also have sprays steaming with steam before importing impregnating fluid, but just in order to improve the temperature of timber, and damping and the pit of wood cell plug is resetted, and the motive force of impelling impregnating fluid to enter timber still will rely on to vacuumize and pressurize.By the Unite States Standard regulation, spray must be shifted out timber outside the jar after steaming, and is cooled to below 49 ℃, just can return a jar interior immersion treatment, and is very inconvenient in the operation, and antiseptic effect is also not ideal enough.
The purpose of this invention is to provide simple, the processing ease of a kind of equipment needed thereby, respond well wood preservation method.
Content of the present invention is to adopt following processing step that timber is carried out preservative treatment:
(1) steam discharge is steamed in spray, timber is placed process tank, spray into overheated 5-10 ℃ atmospheric steam heating, to pressure vacuum meter indication malleation 0.01-0.02 MPa, make timber reach the pure water boiling temperature, continue logical vapour, the moisture of timber inside is vaporized thereupon, air in the timber pore that is displaced and vapour mixture are steamed steam zone by spray at any time and go out process tank.
(2) airtight cooling and separating and condensing liquid, cut off steam, and steam off outlet immediately, and in water leg logical cooling water, there is low amounts of water to flow out to the tank deck outlet pipe, reduce to below 0.033 MPa when vacuum meter indication absolute pressure, the moisture in the timber is after the chamber wall condensation, and inflow is sprayed in the condensate collector that steams the process tank below.
(3) dipping under negative pressure, imports waterborne-type preservation and makes its whole impregnated timbers, and soak time is 4-60 hour.
(4) impregnating fluid regeneration, when the color of impregnating fluid gradually becomes blackish green by brownish red, the impregnating fluid importing is had in the rustless steel container of steam pipe coil, stirring is logical down to be steam heated to 96-98 ℃, add the potassium permanganate saturated solution successively, revert to brown-red solution to solution till.
In the said method, the time that sprays into superheated steam is 50-70 minute, and the time that continues logical vapour is 2-6 hour.Used waterborne-type preservation is for containing chromium copper arsenate solution (CCA), its compound method is with 16.15 kilograms of chromic anhybrides, 12.36 kilograms of copper arsenates, 5.46 kilograms of Plastic Drums of putting into 50 liters of capacity successively of diarsenic pentoxide, add pure water to 3/4 of bucket volume, stir evenly with wooden stick, leave standstill a moment, siphon goes out supernatant liquor to measuring tank, repeat above operation 2-3 time, when the supernatant liquor color shoals, when copper arsenate dissolves seldom, use the sulfuric acid replacement pure water of 0.1M concentration instead, repeat above operation, all to stir at every turn, all molten intact up to copper arsenate, wash Plastic Drum and insoluble residue repeatedly with a small amount of pure water, flushing water is put into measuring tank, pH value is surveyed in moisturizing near 2.00 cubic metres the time, if between 0.9-1.0, then mends and adds water to 2 meters
3Otherwise,, then sulfuric acid or the soda ash with 0.1M transfers to 0.9-1.0 with pH value, mends and adds water to 2.00 cubic metres, and standing over night is filtered the back with 80 order stainless (steel) wires and is used.Be connected with a condensate collector (12) on the used process tank (11), and at different positions valve (1-10) be housed respectively, the outlet of valve (4) is communicated with underground tank (14).
Fig. 1 is a technological process intention of the present invention.
Fig. 2 is the used treatment facility schematic diagram of the present invention.Valve (1-10) process tank (11), condensate collector (12), guide rail (13), underground tank (14), trench (15), head tank (16), pressure vacuum meter (17), bin (18), flushed channel and truck (19).
Below in conjunction with accompanying drawing wood preservation method provided by the invention is described in further detail, but summary of the invention is not limited to shown in the accompanying drawing.
Mobile truck registration process tank entrance pushes process tank to bin together with timber, and puts in place from truck, tighten cover. At first open 2,3,6,7 valves, 7 valve outlet ports are communicated with trench or flow into wastewater disposal basin. A small amount of steam pipe root valve and pipeline showering guilding valve opened behind the venting pipeline condensed water, closed showering guilding valve, slowly opens 1 valve to suitable aperture, to pressure vacuum meter indication malleation 0.01-0.02 MPa, makes timber reach the pure water boiling temperature through 50-70 minute. When 2 valves and 7 valves all spray vapour in a large number, the condensed water that 7 valves flow out no longer reduces. From at this moment counting, process pinus yunnanensis and fir and continue logical steam 2 hours, process dragon spruce and continue logical steam 6 hours. Close earlier the steam pipe root valve during end, then take advantage of and close rapidly 1,2,3,6,7 valves when 2 valves and 7 valves also emit steam slightly. Pressure vacuum meter begins to be partial to vacuum meter one survey. Boiling green lumber, steam condensate flow into trench, the boiling timber of doing over again, steam condensate flows into wastewater disposal basin, decision processing mode standard-sized sheet 3,5,6 valves after chemically examining are opened gradually 8 valves and are introduced running water, until vacuum meter indication absolute pressure is down to below 0.033 MPa. Close 3,5,6 and 8 valves. Airtight 5 minutes, treat pressure stability, open 3 and 10 valves, make the impregnating fluid in the head tank enter process tank, this moment, vacuum reduced, and the pressure vacuum list index returns zero or malleation is slightly arranged, treat that indicator is stable and slightly open 2 valve exhausts and pay close attention to the valve port liquid level, when liquid level exceeds 2 valve, close immediately 2 valves. Record head tank liquid level this moment per hour records later on liquid level one time, until the head tank liquid measure reduces 3.2 meters3More than, or between the double record, till 0.1 cubic metre of the liquid measure deficient change. Open 2,3 and 4 valves, appoint and flow to end with remaining impregnating fluid. Close 2,3,4 valves. Sampling and measuring pH value from discharge liquid, activating oxide content, and the light transmittance at 610nm place (impregnating fluid with new preparation is made reference). And according to measurement result, adopt following measures to process, to recover the performance of impregnating fluid: (1) adds sulfuric acid and transfers PH to 0.9-1; (2) suspension is removed in press filtration; (3) heating is closely boiled, and adds the potassium permanganate oxidation, processes being as cold as below 50 ℃ after qualified, and it is for subsequent use to pump into head tank. Then, take the process tank end cap apart and move truck registration process tank guide rail, pull out bin on truck, be pushed into the flushed channel top, wash with desalted water. And with Demineralized Water Production tank inwall, end cap, valve 2, valve 3, valve 4 pipelines, flushing water flows into flushed channel process for flushing after timber and join anticorrisive agent and use.
Embodiment 1, pine timber, moisture 15-20%, section 10 * 10Cm
2, being packed into process tank after the machining, the pin chips that cushioning 2-3mm is thick between the member is to interspace, sealing feeds normal pressure overheat steam (overheated 8 ℃), and spray was steamed 2 hours, stop steam, logical chuck cooling water to pressure vacuum gauge is indicated below 0.033 MPa, feed liquor.Discharge opeing after 4 hours, discharging, natural air drying.Treatment effect to timber is: the wood members more than 90%, and activating oxide maintenance dose 〉=7.56 kilogram/cubic metre, average maintenance dose is 10.6 kilograms/cubic metre, length of penetration 〉=9.5mm, qualification rate 〉=90%, average length of penetration 34mm; Sapwood soaks into rate, pinus yunnanensis 〉=95%, pinus khasys 〉=89%.
Embodiment 3, the logical steam of lijiang spruce 6 hours soaked 54 hours, and all the other same pines can obtain following result: 9.7 kilograms/cubic metre of the member maintenance doses more than 90%, length of penetration 〉=9.5mm, qualification rate 〉=90%, average length of penetration 15.2mm.
The present invention compared with prior art has the following advantages:
1, this technology has been given full play to the various functions that spray is steamed, and especially passes through a large amount of experimental studies, and timber has at first been adopted the effective ways of jet-steam and exhausting gas, vacuumizes and pressurized equipment thereby saved, and timber is multiplied to the uptake of impregnating fluid. Equipment is simple, and processing ease is respond well.
2, because the anticorrosion liquid measure that timber absorbs is big, and impregnating fluid and the deposit that after immersion wood surface is accumulated of having ready conditions washes, to reduce product to the pollution of environment, flushing liquor can be used to prepare impregnating fluid.
3, it has been generally acknowledged that the timber varieties such as reluctant dragon spruce, also can obtain good treatment effect with this law.
4, do not need after spray is steamed timber taken out of from process tank and move into, can reach cooling timber yet and remove the effect of condensate liquid, greatly alleviated labour intensity, improved condition of work. With potassium permanganate impregnating fluid is carried out oxidation regeneration and avoided " sludge " pollution to environment.
Claims (4)
1, a kind of method of wood preservation is applicable to and uses various waterborne-type preservations that timber is carried out preservative treatment, it is characterized in that adopting following steps:
(1) steam discharge is steamed in spray, timber is placed process tank, spray into overheated 5-10 ℃ atmospheric steam heating, to pressure vacuum meter indication malleation 0.01-0.02 MPa, make timber reach the pure water boiling temperature, continue logical vapour, the moisture of timber inside is vaporized thereupon, air in the timber pore that is displaced and vapour mixture are steamed steam zone by spray at any time and go out process tank.
(2) airtight cooling and separating and condensing liquid, cut off steam, and steam off outlet immediately, and in water leg logical cooling water, there is low amounts of water to flow out to the tank deck outlet pipe, reduce to below 0.033 MPa when vacuum meter indication absolute pressure, the moisture in the timber is after the chamber wall condensation, and inflow is sprayed in the condensate collector that steams the process tank below.
(3) dipping under negative pressure, imports waterborne-type preservation and makes its whole impregnated timbers, and soak time is 4-60 hour.
(4) impregnating fluid regeneration, when the color of impregnating fluid gradually becomes blackish green by brownish red, the impregnating fluid importing is had in the rustless steel container of steam pipe coil, stirring is logical down to be steam heated to 96-98 ℃, add the potassium permanganate saturated solution successively, revert to brown-red solution to solution till.
2, according to a kind of wood preservation method of claim 1, the time that it is characterized in that spraying into superheated steam is 50-70 minute, and the time that continues logical vapour is 2-6 hour.
3, a kind of wood preservation method according to claim 1, it is characterized in that used waterborne-type preservation is for containing chromium copper arsenate solution (CCA), its compound method is with 16.15 kilograms of chromic anhybrides, 12.36 kilograms of copper arsenates, 5.46 kilograms of Plastic Drums of putting into one 50 liters of capacity successively of diarsenic pentoxide add pure water to 3/4 of bucket volume, stir evenly with wooden stick, leave standstill a moment, siphon goes out supernatant liquor to measuring tank, repeats above operation 2-3 time, when the supernatant liquor color shoals, when copper arsenate dissolved seldom, the sulfuric acid of using 0.1M concentration instead replaced pure water, repeated above operation, all to stir at every turn, all molten intact up to copper arsenate, wash Plastic Drum and insoluble residue repeatedly with a small amount of pure water, flushing water is put into measuring tank, pH value is surveyed in moisturizing near 2.00 cubic metres the time, if between 0.9-1.0, then mend and add water to 2 cubic metres, otherwise, then sulfuric acid or the soda ash with 0.1M transfers to 0.9-1.0 with pH value, mend and add water to 2.00 cubic metres, standing over night is filtered the back with 80 order stainless (steel) wires and is used.
4, according to claim 1,2, a kind of wood preservation method of 3, it is characterized in that being connected with on the used process tank (11) condensate collector (12), and valve (1-10) is housed respectively at different positions, the outlet of valve (4) is communicated with underground tank (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105756 CN1069441A (en) | 1991-08-15 | 1991-08-15 | The wood preservation method that the jet-steam and exhausting gas cold soaking is handled |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105756 CN1069441A (en) | 1991-08-15 | 1991-08-15 | The wood preservation method that the jet-steam and exhausting gas cold soaking is handled |
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| CN1069441A true CN1069441A (en) | 1993-03-03 |
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| CN 91105756 Pending CN1069441A (en) | 1991-08-15 | 1991-08-15 | The wood preservation method that the jet-steam and exhausting gas cold soaking is handled |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189579A (en) * | 2010-10-09 | 2011-09-21 | 李海滨 | Small dimension wood poplar flame-retardant integrated plate producing method and wood modification liquid |
| CN102272272A (en) * | 2008-12-31 | 2011-12-07 | 格林皮罗有限公司 | Method and apparatus for depositing agents upon and within bio-char |
| CN104441133A (en) * | 2014-10-09 | 2015-03-25 | 安徽省孟府家工艺品有限公司 | Wood preservative treatment method |
| CN107160938A (en) * | 2017-06-22 | 2017-09-15 | 冯伟刚 | The preparation method that a kind of maize leaves are drawn |
-
1991
- 1991-08-15 CN CN 91105756 patent/CN1069441A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102272272A (en) * | 2008-12-31 | 2011-12-07 | 格林皮罗有限公司 | Method and apparatus for depositing agents upon and within bio-char |
| CN102189579A (en) * | 2010-10-09 | 2011-09-21 | 李海滨 | Small dimension wood poplar flame-retardant integrated plate producing method and wood modification liquid |
| CN102189579B (en) * | 2010-10-09 | 2016-06-29 | 李海滨 | The production method of the fire-retardant integrated sheet material of a kind of small dimension wood poplar and Wooden modifying liquid |
| CN104441133A (en) * | 2014-10-09 | 2015-03-25 | 安徽省孟府家工艺品有限公司 | Wood preservative treatment method |
| CN107160938A (en) * | 2017-06-22 | 2017-09-15 | 冯伟刚 | The preparation method that a kind of maize leaves are drawn |
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