CN103157653A - Shaving board waste recycling method - Google Patents
Shaving board waste recycling method Download PDFInfo
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- CN103157653A CN103157653A CN201310082483XA CN201310082483A CN103157653A CN 103157653 A CN103157653 A CN 103157653A CN 201310082483X A CN201310082483X A CN 201310082483XA CN 201310082483 A CN201310082483 A CN 201310082483A CN 103157653 A CN103157653 A CN 103157653A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Abstract
The invention discloses a shaving board waste recycling method which comprises the following steps: smashing a waste shaving board, adding alcohol in the smashed waste shaving boards to obtain solution, keeping the temperature to be 35-45 DEG C, and standing for 10-15 hours; performing reduced pressure distillation on filtrate obtained by filtering the solution, so as to obtain phenolic resin, wherein the distillate is alcohol; immersing the filter residue obtained after the solution is filtered in a mixed solution of sodium hydroxide and urea, keeping the temperature to be 20 below zero to 10 below zero DEG C, and standing for 10-15 hours; filtering the solution, wherein filter residue is lignin; performing freeze drying on filtrate obtained after the solution is filtered, so as to obtain a freeze-drying product; dissolving the freeze-drying product into a high polymer solution by using water, removing impurities, heating the solution until cellulose is separated out; and filtering the cellulose, wherein the filtrate is the solution of sodium hydroxide and urea. The recycling method is easy to operate, the recycling cost can be reduced, and huge economic values and social significance can be generated.
Description
Technical field
The present invention relates to a kind of recoverying and utilizing method of particieboard waste material.
Background technology
Particieboard is the raw material such as timber to be cut into the fragment of certain specification, through super-dry, mixes with adhesive a kind of artificial board that compacting at a certain temperature forms.Its shortcoming is that glue-line can be aging, the long-time bearing ability, and useful life is than sawn timber much shorter.The annual municipal refuse total amount that produces of China is over 6,000,000,000 tons, and all kinds of timber-work discards take waste and old furniture as the master are approximately 1% left and right wherein, are equivalent to 6,000 ten thousand tons, approximately 8500 ten thousand steres, if effectively utilize, it will be an appreciable numeral.For a long time, China mostly burns or landfill in company with other rubbish together to recycling also fewer as main Waste Wood-based Materials take waste and old furniture.Like this, not only reduce the utilization rate to waste material, and can cause certain pollution to environment.
Summary of the invention
For this reason, technical problem to be solved by this invention is to provide a kind of simple to operate, and effective recoverying and utilizing method of the particieboard waste material of recover materials, the deficiency that exists to overcome prior art.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of recoverying and utilizing method of particieboard waste material, concrete steps comprise:
Step 1: waste particleboard is smashed, added alcohol, and keep 35 ℃～45 ℃ of temperature, placed 10～15 hours;
Step 2: the filtrate after the solution filter that step 1 is obtained, 80 ℃～90 ℃ lower decompression distillation, obtain phenolic resins, distillate is alcohol;
Step 3: the filter residue after the solution filter that step 1 is obtained, immerse mass fraction and be the mixed liquor of the urea of 10%～15% NaOH and mass fraction 5%～10%, and keep temperature-20 ℃～-10 ℃, placed 10～15 hours;
Step 4: with the solution filter that step 3 obtains, the gained filter residue is lignin;
Step 5: the filtrate after the solution filter that step 3 is obtained by freeze-drying method, obtains lyophilized products;
Step 6: the lyophilized products water that step 5 is obtained is dissolved into the macromolecule homogeneous phase solution, and after removing insoluble impurity, heated solution is until whiteness is separated out;
Step 7: with step 6 gained solution filter, the whiteness that leaches is cellulose, and filtrate is NaOH and urea liquid.
Keep 40 ℃ of temperature in described step 1, placed 12 hours.
Distill at 80 ℃ in described step 2.
In described step 3, the mass fraction of the NaOH of solution is 12%, and the mass fraction of urea is 8%, keeps temperature-10 ℃, places 12 hours.
Adopt recycling method of the present invention, by shirtsleeve operation, recyclable phenolic resins, lignin and cellulose, and after reclaiming, remaining alcohol, NaOH and urea liquid can cycling and reutilization, has reduced cost recovery.The cellulose that reclaims can be made artificial silk, and the ether derivatives such as the ester derivative such as cellophane and nitrate, acetate and methylcellulose, ethyl cellulose, carboxymethyl cellulose are used for the aspects such as plastics, explosive, electrician and Scientific Research Equipments.The phenolic resins that reclaims can be used for adhesive, pitch, refractory material or reclaims phenol under certain condition.The lignin that reclaims can be used as cement water reducing agent, ore dressing flotation agent, the dispersant of smelting breeze binding agent, refractory material and adhesive, increase ceramic green intensity and preparation calcium lignosulfonate.Therefore, recoverying and utilizing method of the present invention not only can reduce cost recovery, can also produce huge economic worth and social effect.
Description of drawings
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the flow chart of recoverying and utilizing method of the present invention.
The specific embodiment
The recoverying and utilizing method of particieboard waste material, concrete steps comprise:
Step 1: waste particleboard is smashed, taken 4.476 gram particieboard broken ends and be placed in conical flask, add 50ml alcohol, seal with preservative film, put into constant-temperature table, control 40 ℃ of temperature, placed 12 hours;
Step 2: the filtrate after the solution filter that step 1 is obtained, steaming alcohol by Rotary Evaporators (reducing pressure under the vavuum pump effect) under 80 ℃, obtain phenol resin solution and 47ml alcohol, alcohol can be recycled;
Step 3: the filter residue after the solution filter that step 1 is obtained, immerse the 40ml mass fraction and be 12% NaOH and mass fraction and be the mixed solution of 8% urea, put into constant-temperature table, control temperature-10 ℃, placed 12 hours;
Step 4: with the solution filter that step 3 obtains, filter residue is lignin;
Step 5: the filtrate after the solution filter that step 3 is obtained by freeze-drying method, obtains lyophilized products;
Step 6: the lyophilized products that step 5 is obtained is dissolved in water into the macromolecule homogeneous phase solution, after removing insoluble impurity, and heated solution, the cellulose crystallization is separated out gradually and is mutually linked, and forms at last uniform cellulose;
Step 7: utilize sand filter funnel with the solution filter that step 6 obtains, leach the cellulose of white, gained filtrate is the mixed liquor of NaOH and urea, recyclable rear concentrated recycling.
Adopt recycling method of the present invention, by shirtsleeve operation, recyclable phenolic resins, lignin and cellulose.The cellulose that reclaims can be made artificial silk, and the ether derivatives such as the ester derivative such as cellophane and nitrate, acetate and methylcellulose, ethyl cellulose, carboxymethyl cellulose are used for the aspects such as plastics, explosive, electrician and Scientific Research Equipments.The phenolic resins that reclaims can be used for adhesive, pitch, refractory material or reclaims phenol under certain condition.The lignin that reclaims can be used as cement water reducing agent, ore dressing flotation agent, the dispersant of smelting breeze binding agent, refractory material and adhesive, increase ceramic green intensity and preparation calcium lignosulfonate.And after reclaiming, remaining alcohol, NaOH and urea liquid can cycling and reutilization, has reduced cost recovery.Therefore, recoverying and utilizing method of the present invention not only can reduce cost recovery, can also produce huge economic worth and social effect.
Claims (4)
1. the recoverying and utilizing method of a particieboard waste material, concrete steps comprise:
Step 1: waste particleboard is smashed, added alcohol, and keep 35 ℃～45 ℃ of temperature, placed 10～15 hours;
Step 2: the filtrate after the solution filter that step 1 is obtained, 80 ℃～90 ℃ lower decompression distillation, obtain phenolic resins, distillate is alcohol;
Step 3: the filter residue after the solution filter that step 1 is obtained, immerse mass fraction and be the mixed liquor of the urea of 10%～15% NaOH and mass fraction 5%～10%, and keep temperature-20 ℃～-10 ℃, placed 10～15 hours;
Step 4: with the solution filter that step 3 obtains, the gained filter residue is lignin;
Step 5: the filtrate after the solution filter that step 3 is obtained by freeze-drying method, obtains lyophilized products;
Step 6: the lyophilized products water that step 5 is obtained is dissolved into the macromolecule homogeneous phase solution, and after removing insoluble impurity, heated solution is until whiteness is separated out;
Step 7: with step 6 gained solution filter, the whiteness that leaches is cellulose, and filtrate is NaOH and urea liquid.
2. recoverying and utilizing method according to claim 1, is characterized in that: keep 40 ℃ of temperature in described step 1, placed 12 hours.
3. recoverying and utilizing method according to claim 1, is characterized in that: distill at 80 ℃ in described step 2.
4. recoverying and utilizing method according to claim 1, it is characterized in that: in described step 3, the mass fraction of the NaOH of solution is 12%, the mass fraction of urea is 8%, keeps temperature-10 ℃, places 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082483XA CN103157653A (en) | 2013-03-15 | 2013-03-15 | Shaving board waste recycling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082483XA CN103157653A (en) | 2013-03-15 | 2013-03-15 | Shaving board waste recycling method |
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| CN103157653A true CN103157653A (en) | 2013-06-19 |
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| CN201310082483XA Pending CN103157653A (en) | 2013-03-15 | 2013-03-15 | Shaving board waste recycling method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108185754A (en) * | 2018-02-11 | 2018-06-22 | 贵港市万升木业有限公司 | A kind of rosewood discards the environmental protection recycling method of sawdust |
| CN108325998A (en) * | 2017-12-28 | 2018-07-27 | 北京林业大学 | A kind of Waste Wood-based Materials blending thermal cracking energy classified utilization method |
| CN114290472A (en) * | 2021-12-03 | 2022-04-08 | 西南林业大学 | Method for recovering urea resin and raw materials from wood-based panel and application |
| US11958942B1 (en) | 2023-04-10 | 2024-04-16 | Southwest Forestry University | Method for recycling urea-formaldehyde (UF) and raw materials from wood-based panel, and use thereof |
-
2013
- 2013-03-15 CN CN201310082483XA patent/CN103157653A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108325998A (en) * | 2017-12-28 | 2018-07-27 | 北京林业大学 | A kind of Waste Wood-based Materials blending thermal cracking energy classified utilization method |
| CN108185754A (en) * | 2018-02-11 | 2018-06-22 | 贵港市万升木业有限公司 | A kind of rosewood discards the environmental protection recycling method of sawdust |
| CN114290472A (en) * | 2021-12-03 | 2022-04-08 | 西南林业大学 | Method for recovering urea resin and raw materials from wood-based panel and application |
| US11958942B1 (en) | 2023-04-10 | 2024-04-16 | Southwest Forestry University | Method for recycling urea-formaldehyde (UF) and raw materials from wood-based panel, and use thereof |
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Application publication date: 20130619 |