CN107552547A - The degradation technique and device systems of polyvinyl alcohol product - Google Patents
The degradation technique and device systems of polyvinyl alcohol product Download PDFInfo
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- CN107552547A CN107552547A CN201711003056.2A CN201711003056A CN107552547A CN 107552547 A CN107552547 A CN 107552547A CN 201711003056 A CN201711003056 A CN 201711003056A CN 107552547 A CN107552547 A CN 107552547A
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- polyvinyl alcohol
- temperature
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- oxidation
- alcohol product
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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
- Y02W30/20—Waste processing or separation
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of degradation technique of polyvinyl alcohol product and device systems, polyvinyl alcohol product is carried out pyrohydrolysis, chemical oxidation and bacteria removing by the present invention, so that it is changed into a kind of organic acid mixed solution, the a small amount of insoluble matter, the radioactive substance that are collected by filtration during this are compressed volume processing simultaneously, and it is sealed in concrete block or canister and is recycled or the treating capacity and processing cost of discarded object has been reduced to a great extent in buried processing, the technology according to its extent of injury；To the further twin-stage high temperature oxidation process of organic acid mixed solution, it is set fully to be decomposed into carbon dioxide and water, COD and BOD in solution can be greatly reduced in this high-temperature oxidation process, reach discharging of waste liquid standard, soil can be directly discharged to, environmental hazard will not be brought.Meanwhile after degradation treatment, the insoluble matter weight of polyvinyl alcohol product is less than 5%, and degradation efficiency is higher than 95%.
Description
Technical field
The present invention relates to the degradation technique field of polyvinyl alcohol product, and in particular to a kind of degraded work of polyvinyl alcohol product
Skill and device systems.
Background technology
Many special industries (such as nuclear industry, medical industry, experiment mechanism) and common production mechanism are usually used at present
Conventional operation takes series of products.In special industry, the conventional operation clothes easily contamination material harmful to human body or environment, such as nuclear power
Work clothes easily easily carries the germs of a disease virus, laboratory clothing easily with harmful examination with radioactive substance, hospital work clothes in standing
Agent etc., therefore, conventional operation clothes need periodically to carry out cleaning and sterilizing, and maintenance cost and processing cost are higher.Conventional operation clothes are logical
It can often reuse, and be difficult to cleaning thoroughly, obstinate harmful substance can cause deep layer to endanger staff.In addition, discarded pass
System work clothes is solid waste, and volume reduction amount is few, can not arbitrarily be abandoned, it is necessary to be handled with specific method, as compressed landfill method, burning
Burn facture etc..Compression landfill method is that work clothes is carried out into volume compression processing, buried regional in wilderness loaded on special container, should
Harm of the method to human lives is relatively low, but its cost is very expensive, and treatment effect is bad, and easily environment is polluted；Burn
It is that work clothes is carried out into burning disposal to burn facture, can produce a large amount of pernicious gases, significant damage is caused to environment.
In view of above-mentioned phenomenon, using the disposable protective clothing series of products prepared by polyvinyl alcohol be solve the problems, such as it is preferable
Scheme.Different from other polymers material, polyvinyl alcohol has the physicochemical characteristic similar with cotton, and it is through special modification
Afterwards, can be hydrolyzed at a certain temperature so that the product abandonment thing prepared by polyvinyl alcohol is readily decontaminatible, useless through processing
Thing can be finally decomposed to CO2And H2The innocuous substances such as O, it is very friendly to environment.Polyvinyl alcohol has fibre forming property and film forming, root
PVA clothes and PVA film can be made as according to different modified techniques, wherein, PVA clothes are soft, fluffy, intensity is high, rise
Property is low for hair, good permeability, water imbibition are strong, while also has static electricity resistance, barrier properties for gases, organic solvent resistance, water solubility etc.
Property, available for making various protection series of products, such as conjoined clothes, headgear, shoe cover；More than PVA film equally has
Property, available for fields such as product packaging, washing packagings, degradable water colloidal sol bag is such as made, after contaminated or discarded
Protective garment carry out washing packaging or degradable package, reduce the contact probability of staff and pollutant, both safety, and conveniently.
By using the various disposable water-soluble daily Protection Products made by polyvinyl alcohol degradation material, work can not only be lifted
The wearing comfort of personnel, meet all trades and professions normal work use demand, and can avoid reusing to staff
The harm brought, while coordinate degradation treatment technology to efficiently reduce harmful waste yield.Therefore, protected with polyvinyl alcohol
Product substitutes application trend of the conventional operation clothes in fields such as nuclear industry, medical industry, experiment mechanism, general industries extensively will more
Add significantly, the research and development of the degradation technique for this for polyvinyl alcohol product have very important significance.And currently in poly-
The problems such as generally existing complex process in the degradation treatment of vinyl alcohol Protection Product, insufficient, price is high processing, base of the present invention
Researched and developed in this.
The content of the invention
The technical problems to be solved by the invention are：There is provided that a kind of processing cost is low, technique is simple, can be by polyvinyl alcohol system
Product are fully degraded into water and carbon dioxide, the degradation technique and device systems of environmentally safe polyvinyl alcohol product.
Technical scheme is as follows：A kind of degradation technique of polyvinyl alcohol product, comprises the following steps：S1：Will be poly-
Vinyl alcohol product is stored with polyvinyl alcohol film poly-bag, encapsulated；S2：Packaged polyvinyl alcohol product is subjected to high-temperature water
It is solution, chemical oxidation, degerming, form a kind of organic acid mixture solution；S3：Mixture solution is cooled down, filtered, and to not
Molten material, radioactive substance carry out separating treatment；S4：Filtrate in step S3 is subjected to a high-temperature oxydation in the form of spraying,
Oxidation generation CO/CO2Steam form；S5：Steam in step S4 is subjected to secondary high-temperature oxidation, makes its fully oxidized into CO2；
S6：Steam in step S5 is subjected to gas-liquid separation, condenses steam by method of quenching；S7：Condensed water is subjected to waste liquid row
Standard detection is put, can be discharged after qualified.
Applied to above-mentioned technical proposal, in described degradation technique, in step S1, the polyvinyl alcohol film poly-bag bottom
High temperature heat seal, and sealing part is equipped with polyvinyl alcohol Sealing strap.
Applied to above-mentioned technical proposal, in described degradation technique, in step S2, the pyrohydrolysis temperature is 90-100
℃。
Applied to above-mentioned technical proposal, in described degradation technique, in step S3, the change of the chemical oxidation of gold use
Learning reagent includes oxidant and catalyst；The catalyst contains ferrous sulfate heptahydrate, deionized water, concentrated sulfuric acid etc.；The oxygen
Agent is hydrogen peroxide.
Applied to above-mentioned technical proposal, in described degradation technique, in step S3, lack to what is filtered out in degradation process
Amount insoluble matter, radioactive substance are compressed volume processing, and are sealed in concrete block or metal according to the extent of injury
Recycled in container or buried processing.
Applied to above-mentioned technical proposal, in described degradation technique, step S4, in S5, the high-temperature oxidation process requirement
Temperature is 600-700 DEG C, oxygen-enriched environment.
Applied to above-mentioned technical proposal, any degradation technique processing polyvinyl alcohol product of more than one claims is used
Device systems, including chemical oxidation subsystem and high-temperature oxydation subsystem；Wherein, the chemical oxidation subsystem includes hot water
Passage, reagent passage, chemical oxidation device, the first heat-exchange device, outer filter, the first apparatus for temporary storage；The hot water leads to
Road, reagent passage, the first heat-exchange device, outer filter are connected with the chemical oxidation device；The high-temperature oxydation
Subsystem includes the high-temperature oxidation device that pipeline is connected successively, secondary high-temperature oxidation unit, gas-liquid separation device, second
Apparatus for temporary storage, and the second heat-exchange device being connected with the gas-liquid separation device.
Applied to above-mentioned technical proposal, in described device systems, it is provided with agitating paddle in the chemical oxidation device, removes
Bacterium device, interior filter；The chemical oxidation device is provided with insoluble matter at interior filter and takes useless mouth；It is described to remove
Bacterium device uses ultraviolet-emitting source, under ultraviolet irradiation condition, Fe3+Substitute Fe2+Also the degraded of organic matter can be significantly speeded up
Speed, and the utilization ratio of hydrogen peroxide is high.
Applied to above-mentioned technical proposal, in described device systems, the chemical oxidation subsystem, high-temperature oxydation subsystem
Run time be no less than 5h.
Applied to above-mentioned technical proposal, described device systems also include conveying device, hot-water cylinder, rack, cooling tower,
Air heater, instrument and meter；The conveying device connects the first apparatus for temporary storage and a high-temperature oxidation device；The hot-water cylinder
It is connected with the hot water channel；The rack is I＆C system, and control device is run；The cooling tower category accessory system,
For cooling down solution；The air heater is used to air heated transportation entering high-temperature oxidation device；The instrument and meter is used for
The monitoring of temperature, pressure, liquid level, flow.
Using above-mentioned technical proposal, polyvinyl alcohol product is carried out pyrohydrolysis, chemical oxidation and degerming place by the present invention
Reason so that it is changed into a kind of organic acid mixed solution, while by a small amount of insoluble matter being collected by filtration during this, radioactivity
Material is compressed volume processing, and is sealed in concrete block or canister and is recycled according to its extent of injury
Or the treating capacity and processing cost of discarded object has been reduced to a great extent in buried processing, the technology；Organic acid mixed solution is entered
One step twin-stage high temperature oxidation process, makes it fully be decomposed into carbon dioxide and water, this high-temperature oxidation process can be greatly reduced molten
COD and BOD in liquid, reach discharging of waste liquid standard, can be directly discharged to soil, will not bring environmental hazard.Meanwhile pass through
After degradation treatment, the insoluble matter weight of polyvinyl alcohol product is less than 5%, and degradation efficiency is higher than 95%.
Brief description of the drawings
Fig. 1 is degradation technique flow chart of the present invention；
Fig. 2 is chemical oxidation device profile of the present invention.
Embodiment
With reference to specific embodiments and the drawings, the present invention is further described.
Present embodiments provide the equipment system that a kind of degradation technique of polyvinyl alcohol product and the degradation technique use
System.
By the polyvinyl alcohol product after use such as conjoined clothes, T-shirt, headgear, gloves, socks, shoe cover etc., with poly- second
Enol film poly-bag is stored, encapsulated, be pending, can effectively avoid secondary pollution.Wherein, polyvinyl alcohol film poly-bag bottom
High temperature heat seal, it is used for sealing treatment equipped with polyvinyl alcohol Sealing strap.
By in packaged polyvinyl alcohol product input degradation equipment system, degradation treatment is carried out.
See Fig. 1, Fig. 2, the degradation equipment system of the polyvinyl alcohol product includes chemical oxidation subsystem and high temperature oxygen beggar
System；Wherein, the chemical oxidation subsystem includes hot water channel 1, reagent passage 2, chemical oxidation device 3, the first heat exchange
Device 4, outer filter 5, the first apparatus for temporary storage 6；The hot water channel 1, reagent passage 2, the first heat-exchange device 4, outer mistake
Filter device 5 is connected with chemical oxidation device 3；Also, be provided with chemical oxidation device agitating paddle 31, bactericidal device 32,
Interior filter 33；Wherein, the chemical oxidation device 3 is provided with insoluble matter at interior filter 33 and takes useless mouth 331；
The bactericidal device 32 uses ultraviolet-emitting source.In addition, first heat exchanger 4 is used to control chemical oxidation device internal solution
Temperature.The high-temperature oxydation subsystem includes the high-temperature oxidation device 7 that pipeline is connected successively, secondary high-temperature oxidation dress
Put 8, gas-liquid separation device 9, the second apparatus for temporary storage 10, and the second heat-exchange device being connected with the gas-liquid separation device
11.Wherein, high-temperature oxidation device is 600-700 DEG C, operated under the conditions of oxygen-enriched environment in temperature.
The device systems also include conveying device 12, hot-water cylinder, rack, cooling tower, air heater, instrument and meter；
The conveying device 12 connects the first apparatus for temporary storage 6 and a high-temperature oxidation device 7；The hot-water cylinder and the hot water channel 1
It is connected；The rack is I＆C system, controls the operation of whole equipment system；The cooling tower belongs to accessory system, uses
In cooling solution；The air heater is used to heat air and be conveyed into high-temperature oxidation device；The instrument and meter is used for
The monitoring of temperature, pressure, liquid level, flow.
Rack is started, packaged polyvinyl alcohol product is put into chemical oxidation device 3, the hot water in hot water filling passes through
Hot water channel 1 injects chemical oxidation device 3, and water temperature is 90-100 DEG C, by solid polyethylene alcohol product be dissolved as polyvinyl alcohol with
The mixed solution (being referred to as solution A) of water；Secondly, chemical reagent enters chemical oxidation device 3 by reagent passage 2, and in solution A
Polyvinyl alcohol reacts, and the molecular structure of polyvinyl alcohol is changed, and solution A is changed into a kind of mixture of organic acid (is referred to as
Solution B).Wherein, chemical reagent mainly includes catalyst and oxidant, and catalyst contains ferrous sulfate heptahydrate, deionized water, dense
Sulfuric acid etc.；Oxidant is hydrogen peroxide.Ferrous ion catalyzing hydrogen peroxide, which is allowed to decompose, produces hydroxyl radical free radical, hydroxyl radical free radical
With very strong oxidisability, organic compound can be removed.In addition, polyvinyl alcohol product stirs inside chemical oxidation device 3
During dissolving, while bactericidal device 32 is opened, irradiated using ultraviolet-emitting source, remove the bacterium in solution and disease
Poison, and under ultraviolet irradiation condition, Fe3+Substitute Fe2+Also the degradation rate of organic matter in solution, and mistake can be significantly speeded up
The utilization ratio of hydrogen oxide is high.Chemical oxidation device 3 is internal to carry out anti-corrosion treatment, ensure during its long-term use not by
Corrosion.
By interior filter 33, the micro insoluble matter in filtering solution B, and by it from taking useless mouth 331 to take out.Poly-
Vinyl alcohol product dissolution phase, the passage of outer filter 5 are closed, and solution B is in the heat of chemical oxidation device 3 and first
The internal circulation flow of switch 4, reach the purpose of control temperature, by the temperature adjusting of solution B to after 60 DEG C, opening outer filtering dress
5 passage is put, is sent in outer filter 5, the filter core in outer filter 5 can filter out radioactive material filtration
The filtrate of radioactive substance is referred to as solution C, and is sent into the first apparatus for temporary storage 6, and filter core can be individually taken out to do subsequent treatment.
Solution C is sprayed into a high-temperature oxidation device 7 in the form of spraying, increases solution C high-temperature oxydation contact area, makes molten
Liquid C is changed into steam form.High-temperature oxygen-enriched environment can remove the carbon in solution C, its oxidation is generated a small amount of carbon monoxide and a large amount of
Carbon dioxide.And then the steam form of solution C is sent into secondary high-temperature oxidation unit 8 and further aoxidized, make carbon monoxide abundant
Reaction generation carbon dioxide.Steam enters gas-liquid separation device 9, condenses steam by second heat exchanger device 11, dioxy
Change carbon to discharge from pipeline above gas-liquid separation device 9, water recovery is present in below device into the aqueous solution, and it is temporary to be sent into second
Cryopreservation device 10, it can be discharged after detection is qualified.
Chemical oxidation subsystem run time is no less than 5h, and polyvinylalcohol solids waste product is changed into a kind of organic acid and mixed by it
Solution (such as acetic acid, formic acid), and a small amount of insoluble matter, radioactive substance are separated, at subsequent high temperature oxidative degradation
Reason；High-temperature oxydation subsystem run time is no less than 5h, and using twin-stage high temperature oxidation process, organic acid mixed solution is thoroughly divided
COD and BOD in solution can be greatly reduced, reach discharging of waste liquid standard for carbon dioxide and water, this process by solving.
After degradation treatment, the insoluble matter weight of polyvinyl alcohol product is less than 5%, and degradation efficiency is higher than 95%.To degraded
During extract it is a small amount of do not allow material and the filter core with radioactive substance to be compressed volume processing, can be according to the extent of injury
It is sealed in concrete block or canister and is recycled or buried processing, the technology has been reduced to a great extent discarded
The treating capacity and processing cost of thing.Soil can be directly discharged to after the aqueous solution finally given through degradation reaction is qualified after testing,
Environmental hazard will not be brought.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of degradation technique of polyvinyl alcohol product, it is characterised in that comprise the following steps：
S1：Polyvinyl alcohol product is stored with polyvinyl alcohol film poly-bag, encapsulated；
S2：Packaged polyvinyl alcohol product is subjected to pyrohydrolysis, chemical oxidation, degerming, forms a kind of organic acid mixture
Solution；
S3：Mixture solution is cooled down, filtered, and separating treatment is carried out to insoluble matter, radioactive substance；
S4：Filtrate in step S3 is subjected to a high-temperature oxydation, oxidation generation CO/CO in the form of spraying2Steam form；
S5：Steam in step S4 is subjected to secondary high-temperature oxidation, makes its fully oxidized into CO2；
S6：Steam in step S5 is subjected to gas-liquid separation, condenses steam by method of quenching；
S7：Condensed water is subjected to discharging of waste liquid standard detection, can be discharged after qualified.
2. degradation technique as described in claim 1, it is characterised in that：In step S1, the polyvinyl alcohol film poly-bag bottom
Portion's high temperature heat seal, and sealing part is equipped with polyvinyl alcohol Sealing strap.
3. degradation technique as described in claim 1, it is characterised in that：In step S2, the pyrohydrolysis temperature is 90-
100℃。
4. degradation technique as described in claim 1, it is characterised in that：In step S3, what the chemical oxidation of gold used
Chemical reagent includes oxidant and catalyst；The catalyst contains ferrous sulfate heptahydrate, deionized water, the concentrated sulfuric acid；The oxygen
Agent is hydrogen peroxide.
5. degradation technique as described in claim 1, it is characterised in that：In step S3, to what is filtered out in degradation process
A small amount of insoluble matter, radioactive substance are compressed volume processing, and are sealed in concrete block or gold according to the extent of injury
Recycled or buried processing in category container.
6. degradation technique as described in claim 1, it is characterised in that：Step S4, in S5, the high-temperature oxidation process requirement
Temperature is 600-700 DEG C, oxygen-enriched environment.
7. the device systems of the degradation technique such as any one of claim 1-6, it is characterised in that：Including chemical oxidation subsystem
With high-temperature oxydation subsystem；
The chemical oxidation subsystem includes hot water channel, reagent passage, chemical oxidation device, the first heat-exchange device, outer mistake
Filter device, the first apparatus for temporary storage；The hot water channel, reagent passage, the first heat-exchange device, outer filter with describedization
Oxidation unit is learned to be connected；
The high-temperature oxydation subsystem include successively a high-temperature oxidation device that pipeline is connected, secondary high-temperature oxidation unit,
Gas-liquid separation device, the second apparatus for temporary storage, and the second heat-exchange device being connected with the gas-liquid separation device.
8. device systems as described in claim 7, it is characterised in that：Be provided with the chemical oxidation device agitating paddle,
Bactericidal device, interior filter；The bactericidal device uses ultraviolet-emitting source.
9. the device systems as described in claim 7 or 8, it is characterised in that：The chemical oxidation subsystem, high temperature oxygen beggar
The run time of system is no less than 5h.
10. device systems as claimed in claim 7, it is characterised in that：Also include conveying device, hot-water cylinder, rack, cooling water
Tower, air heater, instrument and meter.
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| CN201711003056.2A CN107552547B (en) | 2017-10-24 | 2017-10-24 | The degradation technique and device systems of polyvinyl alcohol product |
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| CN201711003056.2A CN107552547B (en) | 2017-10-24 | 2017-10-24 | The degradation technique and device systems of polyvinyl alcohol product |
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| CN107552547B CN107552547B (en) | 2019-11-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112275769A (en) * | 2020-09-30 | 2021-01-29 | 邓玉欣 | Pollution-free plastic degradation device |
| CN112820438A (en) * | 2020-04-30 | 2021-05-18 | 东部技术公司 | Chemical oxidation treatment process of PVA waste treatment system |
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| JP2013177640A (en) * | 2008-09-30 | 2013-09-09 | Sekisui Chem Co Ltd | Method of producing polyvinyl acetal resin |
| CN106251924A (en) * | 2016-01-21 | 2016-12-21 | 青岛天和清原科技有限公司 | Supercritical water oxidation processes the method for PVA polymeric material |
| CN106875995A (en) * | 2017-01-20 | 2017-06-20 | 魏家奎 | A kind of method for purifying the degradable PVA products of low-activity in disposal |
| CN106966539A (en) * | 2017-04-27 | 2017-07-21 | 江南大学 | A kind of method of efficient degradation polyvinyl alcohol material |
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Patent Citations (5)
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| JP2013177640A (en) * | 2008-09-30 | 2013-09-09 | Sekisui Chem Co Ltd | Method of producing polyvinyl acetal resin |
| CN102754167A (en) * | 2009-11-17 | 2012-10-24 | 汉纳检查及工程有限公司 | Disposal and decontamination of radioactive polyvinyl alcohol products |
| CN106251924A (en) * | 2016-01-21 | 2016-12-21 | 青岛天和清原科技有限公司 | Supercritical water oxidation processes the method for PVA polymeric material |
| CN106875995A (en) * | 2017-01-20 | 2017-06-20 | 魏家奎 | A kind of method for purifying the degradable PVA products of low-activity in disposal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820438A (en) * | 2020-04-30 | 2021-05-18 | 东部技术公司 | Chemical oxidation treatment process of PVA waste treatment system |
| CN112275769A (en) * | 2020-09-30 | 2021-01-29 | 邓玉欣 | Pollution-free plastic degradation device |
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