CN107213697A - The recovery method and recovery system of finish in a kind of vinal production process - Google Patents
The recovery method and recovery system of finish in a kind of vinal production process Download PDFInfo
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- CN107213697A CN107213697A CN201710540543.6A CN201710540543A CN107213697A CN 107213697 A CN107213697 A CN 107213697A CN 201710540543 A CN201710540543 A CN 201710540543A CN 107213697 A CN107213697 A CN 107213697A
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- storage tank
- oil
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- concentration
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- 238000011084 recovery Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000012528 membrane Substances 0.000 claims abstract description 173
- 239000012141 concentrate Substances 0.000 claims abstract description 114
- 238000001914 filtration Methods 0.000 claims abstract description 79
- 239000007864 aqueous solution Substances 0.000 claims abstract description 50
- 238000001471 micro-filtration Methods 0.000 claims abstract description 37
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 27
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims description 148
- 239000007788 liquid Substances 0.000 claims description 139
- 239000000919 ceramic Substances 0.000 claims description 113
- 238000003860 storage Methods 0.000 claims description 93
- 238000012432 intermediate storage Methods 0.000 claims description 56
- 239000010779 crude oil Substances 0.000 claims description 52
- 239000000835 fiber Substances 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 12
- 244000005700 microbiome Species 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 7
- 229910052573 porcelain Inorganic materials 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- 238000007380 fibre production Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- -1 polyethylene Polymers 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000009987 spinning Methods 0.000 description 6
- 238000005119 centrifugation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001223 reverse osmosis Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 238000001891 gel spinning Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of recovery method of finish in vinal production process and recovery system, wherein recovery method is to be handled the oil-containing aqueous solution of oil bath system intermittence discharge through coarse filter micro-filtration, purpose ceramic-film filter ultrafiltration, organic membrane filter device osmosis filtration, concentrate reuse to the processes such as oil bath system successively.Most finishes in recovery method of the present invention and recovery system recycled polyethylene alcohol fiber production process, reduce finish consumption, reduce the pressure of sewage disposal.Recovery method of the present invention and recovery system can improve the filter efficiency of three kinds of filters using three-stage filtering, improve the service life of each filter, reduce the care and maintenance cost of filter.
Description
Technical field
The present invention relates to a kind of recovery method of finish and recovery system, specifically a kind of vinal production
During finish recovery method and recovery system.
Background technology
Vinal is a kind of widely used organic synthetic fibers material, because its have good intensity, modulus,
Antiacid alkali, soluble, degradable and nontoxic etc. premium properties, available for concrete and cement products, papermaking, weaving, doctor
Etc. field.
Vinal production technology more use gel spinning technology, including dissolving, filtering, deaeration, spinning, solidification,
Neutralize, it is damp and hot stretch, oil, drying, preheating, extending, thermal finalization, cooling, the flow such as winding.Idiographic flow is polyvinyl alcohol tree
Fat dissolves in stoste in-process, while adding the additives such as modifying agent, defoamer produces qualified spinning solution, spinning solution
Through filtering the impurity and bubble that are removed with deaeration in stoste, it is then sent through spinning process and carries out spinning.As made from spinning process just
Raw silk beam pass sequentially through coagulating bath process one bath, two bath, three bath, four bath and oil bath system, by dehydration solidification, neutralize, it is wet
Hot-stretch, wash and tow of five steps formation with definite shape and intensity that oil.This tow thermally treated process again
The flow such as drying, preheating, extension, thermal finalization, cooling after produce vinal long filament, after being sent to after long filament is rolled
Treatment process.Postprocessing working procedures need vinal long filament being cut to the chopped fiber of length-specific and beaten further according to client
Bag.
The purpose that oiling treatment is carried out in vinal production process be in order to reduce the electrostatic between tow, and
Tow is protected in heat treatment step, prevents tow from sticking together, the quality and quality of fiber is influenceed.
The oiling method used at present is to add the long chain alkane containing carbon chain lengths C12~C20, senior in oil bath system
The finishes such as fatty alcohol, ethers and other surfactants, using water as solvent, form the oil-containing water that oil concentration is 5g/L~9g/L
Solution, tow passes through in the oil-containing aqueous solution, so as to reach the purpose oiled.During oiling, the part moisture in tow
Into the oil-containing aqueous solution, while tow has taken away part finish, causing the concentration of finish in the oil-containing aqueous solution reduces, and is producing
The oil-containing aqueous solution of continuous exhausting low-concentration is wanted in journey, while adding fresh finish, it is ensured that oil concentration exists in the oil-containing aqueous solution
In certain scope, the effect that oils of tow is maintained.
In above-mentioned oiling process, although ensure that the effect that oils of tow, but it can discharge containing a great deal of finish
Waste water, increase the pressure of sewage disposal, add finish consumption, improve the production cost of vinal.
The content of the invention
In order to solve above-mentioned deficiency of the prior art, the invention provides oily in a kind of vinal production process
The recovery method and recovery system of agent, to reduce the consumption of finish, reduce the pressure of sewage disposal.
The recovery method of finish, comprises the following steps in vinal production process of the present invention：
Step 1：Coarse filter carries out micro-filtration
The oil-containing aqueous solution of oil bath system intermittence discharge is collected into crude oil storage tank, the oil-containing that crude oil storage tank is collected
The aqueous solution is pumped to coarse filter progress micro-filtration by being fed, and removes the bulky grains such as fiber therein, mechanical admixture, microorganism miscellaneous
Matter.
Oil concentration is 5g/L~9g/L, preferably 6g/L~8g/L in the oil-containing aqueous solution.
The filtering accuracy scope of coarse filter is 0.1 μm~10 μm, and preferably 0.5 μm~7 μm, optimal is 1 μm~5 μm.
Step 2：Purpose ceramic-film filter carries out ultrafiltration
The oil-containing aqueous solution after micro-filtration is pumped to purpose ceramic-film filter progress ultrafiltration by circulating, and passes through the separation of ceramic membrane
Effect, is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts by the oil-containing aqueous solution, and ceramic membrane clear liquid enters middle store up
Tank, ceramic membrane filter concentrate is then back to crude oil storage tank and carries out circulation micro-filtration and ultrafiltration；Treat ceramic membrane filter in crude oil storage tank
The cycles of concentration of concentrate stops filtering when reaching setting value, and now the liquid in crude oil storage tank is ceramic membrane concentrate, ceramics
Film concentrate is delivered to concentration liquid storage tank through charging pump.
The concentration of finish is 2~7 times of oil concentration in the initial oil-containing aqueous solution, preferably in the ceramic membrane concentrate
Cycles of concentration is 3~6 times, and optimal cycles of concentration is 4~5 times.
The filtering accuracy scope of purpose ceramic-film filter be 1nm~100nm, preferably 10nm~80nm, it is optimal for 20nm~
50nm。
Step 3：Organic membrane filter device carries out osmosis filtration
Ceramic membrane clear liquid in intermediate storage tank is pumped to organic membrane filter device progress osmosis filtration by circulating, and ceramic membrane is clear
Liquid is divided into organic membrane filter concentrate and organic film clear liquid two parts by organic film, and wherein organic film clear liquid can be directly discharged into sewage
Processing system, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, treats organic in intermediate storage tank
Film filtration concentrated cycles of concentration stops filtering when reaching setting value, and now the liquid in intermediate storage tank concentrates for organic film
Liquid, organic film concentrate is delivered to concentration liquid storage tank through charging pump.
The concentration of finish is 2~7 times of oil concentration in ceramic membrane clear liquid preferably 3~6 in the organic film concentrate
Times, optimal is 4~5 times.
The filtering accuracy scope of organic membrane filter device is 0.1nm~1nm, preferably 0.2nm~0.8nm, and optimal is 0.4nm
~0.6nm.
Step 4：Concentrate reuse is to oil bath system
The concentrate in liquid storage tank is concentrated according to production technology needs, oil bath system is added by measuring pump, to adjust it
In oil concentration.
Step 5：Cleaning filter
The recovery system was run after a period of time, can be to the coarse filter in system, purpose ceramic-film filter and organic film mistake
Filter is backwashed.
The recovery system of finish in vinal production process of the present invention, including the crude oil storage tank, thick being sequentially connected
Filter, purpose ceramic-film filter, intermediate storage tank and organic membrane filter device；In addition, it is provided with pipe in purpose ceramic-film filter
Road is connected with crude oil storage tank, and be provided with pipeline in organic membrane filter device is connected with intermediate storage tank；It is additionally provided with concentrate storage
Tank, the concentration liquid storage tank is connected by pipeline with crude oil storage tank and intermediate storage tank respectively.
Crude oil storage tank is used to collect the oil-containing aqueous solution of oil bath system intermittence discharge and through purpose ceramic-film filter ultrafiltration
The ceramic membrane filter concentrate obtained afterwards；
Coarse filter is used to carry out micro-filtration to the oil-containing aqueous solution collected in crude oil storage tank, removes fiber therein, machinery
The large granular impurities such as impurity, microorganism.The filtering accuracy scope of coarse filter be 0.1 μm~10 μm, preferably 0.5 μm~7 μm,
Optimal is 1 μm~5 μm.
Purpose ceramic-film filter is used to carry out ultrafiltration to the oil-containing aqueous solution after coarse filter micro-filtration, passes through point of ceramic membrane
From effect, the oil-containing aqueous solution is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts, ceramic membrane clear liquid enters middle
Storage tank, ceramic membrane filter concentrate is then back to crude oil storage tank by pipeline and carries out circulation micro-filtration and ultrafiltration；Treat in crude oil storage tank
The cycles of concentration of ceramic membrane filter concentrate stops filtering when reaching setting value, and now the liquid in crude oil storage tank is that ceramic membrane is dense
Contracting liquid, ceramic membrane concentrate is pumped to concentration liquid storage tank by the road.The filtering accuracy scope of purpose ceramic-film filter be 1nm~
100nm, preferably 10nm~80nm, optimal is 20nm~50nm.
Intermediate storage tank is used to store the ceramic membrane clear liquid that obtains after purpose ceramic-film filter ultrafiltration and through organic membrane filter
The organic membrane filter concentrate obtained after device osmosis filtration；
Organic membrane filter device is used to carry out osmosis filtration, ceramic membrane clear liquid quilt to the ceramic membrane clear liquid that intermediate storage tank is stored
Organic film is divided into organic membrane filter concentrate and organic film clear liquid two parts, and wherein organic film clear liquid can be directly discharged into sewage disposal
System, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, treats organic film mistake in intermediate storage tank
The cycles of concentration of filter concentration liquid stops filtering when reaching setting value, and now the liquid in intermediate storage tank is organic film concentrate, is had
Machine film concentrate is delivered to concentration liquid storage tank through charging pump.The filtering accuracy scope of organic membrane filter device is 0.1nm~1nm, excellent
Elect 0.2nm~0.8nm as, optimal is 0.4nm~0.6nm.
The concentrate in liquid storage tank is concentrated according to production technology needs, oil bath system is added by measuring pump, to adjust it
In oil concentration.
The finish in vinal production process is reclaimed using the recovery method and recovery system of the present invention
Afterwards, from oil bath system waste discharge be organic film clear liquid in oil concentration be less than 0.5mg/L.
Beneficial effects of the present invention are embodied in：
Most finishes in recovery method of the present invention and recovery system recycled polyethylene alcohol fiber production process, subtract
Few finish consumption, reduces the pressure of sewage disposal.
Recovery method of the present invention and recovery system can improve the filter efficiency of three kinds of filters using three-stage filtering, carry
The service life of high each filter, reduces the care and maintenance cost of filter.
Brief description of the drawings
Fig. 1 is the recovery system schematic diagram of finish in vinal production process of the present invention.
Embodiment
Below by specific embodiment, the present invention is further analyzed and described.It is necessarily pointed out that, below
Embodiment is served only for that the present invention is further described, it is impossible to be interpreted as limiting the scope of the invention, the field
Technical staff can make some nonessential modifications and adaptations according to foregoing invention content to the present invention.
The recovery system of finish in vinal production process of the present invention, including the crude oil storage tank, thick being sequentially connected
Filter, purpose ceramic-film filter, intermediate storage tank and organic membrane filter device；In addition, it is provided with pipe in purpose ceramic-film filter
Road is connected with crude oil storage tank, and be provided with pipeline in organic membrane filter device is connected with intermediate storage tank；It is additionally provided with concentrate storage
Tank, the concentration liquid storage tank is connected by pipeline with crude oil storage tank and intermediate storage tank respectively.
Crude oil storage tank is used to collect the oil-containing aqueous solution of oil bath system intermittence discharge and through purpose ceramic-film filter ultrafiltration
The ceramic membrane filter concentrate obtained afterwards；
Coarse filter is used to carry out micro-filtration to the oil-containing aqueous solution collected in crude oil storage tank, removes fiber therein, machinery
The large granular impurities such as impurity, microorganism.The filtering accuracy scope of coarse filter be 0.1 μm~10 μm, preferably 0.5 μm~7 μm,
Optimal is 1 μm~5 μm.
Purpose ceramic-film filter is used to carry out ultrafiltration to the oil-containing aqueous solution after coarse filter micro-filtration, passes through point of ceramic membrane
From effect, the oil-containing aqueous solution is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts, ceramic membrane clear liquid enters middle
Storage tank, ceramic membrane filter concentrate is then back to crude oil storage tank by pipeline and carries out circulation micro-filtration and ultrafiltration；Treat in crude oil storage tank
The cycles of concentration of ceramic membrane filter concentrate stops filtering when reaching setting value, and now the liquid in crude oil storage tank is that ceramic membrane is dense
Contracting liquid, ceramic membrane concentrate is pumped to concentration liquid storage tank by the road.The filtering accuracy scope of purpose ceramic-film filter be 1nm~
100nm, preferably 10nm~80nm, optimal is 20nm~50nm.
Intermediate storage tank is used to store the ceramic membrane clear liquid that obtains after purpose ceramic-film filter ultrafiltration and through organic membrane filter
The organic membrane filter concentrate obtained after device osmosis filtration；
Organic membrane filter device is used to carry out osmosis filtration, ceramic membrane clear liquid quilt to the ceramic membrane clear liquid that intermediate storage tank is stored
Organic film is divided into organic membrane filter concentrate and organic film clear liquid two parts, and wherein organic film clear liquid can be directly discharged into sewage disposal
System, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, treats organic film mistake in intermediate storage tank
The cycles of concentration of filter concentration liquid stops filtering when reaching setting value, and now the liquid in intermediate storage tank is organic film concentrate, is had
Machine film concentrate is delivered to concentration liquid storage tank through charging pump.The filtering accuracy scope of organic membrane filter device is 0.1nm~1nm, excellent
Elect 0.2nm~0.8nm as, optimal is 0.4nm~0.6nm.
The concentrate in liquid storage tank is concentrated according to production technology needs, oil bath system is added by measuring pump, to adjust it
In oil concentration.
The finish in vinal production process is reclaimed using the recovery method and recovery system of the present invention
Afterwards, from oil bath system waste discharge be organic film clear liquid in oil concentration be less than 0.5mg/L.
Embodiment 1：
The recovery method of finish is as follows in vinal production process in the present embodiment：
1st, coarse filter carries out micro-filtration
The oil concentration of oil bath system intermittence discharge is collected for the 5g/L oil-containing aqueous solution into crude oil storage tank, contains
Oil solution is pumped to the coarse filter progress micro-filtration that filtering accuracy is 0.1 μm by being fed, and removes fiber therein, machinery miscellaneous
The large granular impurities such as matter, microorganism.
2nd, purpose ceramic-film filter carries out ultrafiltration
The oil-containing aqueous solution after micro-filtration is pumped to the purpose ceramic-film filter progress ultrafiltration that filtering accuracy is 1nm by circulating,
By the centrifugation of ceramic membrane, the oil-containing aqueous solution is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts.Ceramics
Film clear liquid is collected into intermediate storage tank, and ceramic membrane filter concentrate is then back to crude oil storage tank and carries out circulation micro-filtration and super
Filter, stops when the cycles of concentration of ceramic membrane filter concentrate in crude oil storage tank reaches 7 times of oil concentration in the oil-containing aqueous solution
Filtering, now the liquid in crude oil storage tank is ceramic membrane concentrate, and oil concentration therein is 35g/L, ceramic membrane concentrate warp
Charging pump is delivered to concentration liquid storage tank.The ceramic membrane clear liquid collected in intermediate storage tank, its oil concentration is 3g/L.
3rd, organic membrane filter device carries out osmosis filtration
Ceramic membrane clear liquid in intermediate storage tank is pumped to filtering accuracy for 0.1nm organic membrane filters device and is carried out reverse osmosis by circulating
Through filter, ceramic membrane clear liquid is divided into organic membrane filter concentrate and organic film clear liquid two parts by organic film, and organic film clear liquid can
Sewage disposal system is directly discharged into, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, in treating
Between stop filtering when the cycles of concentration of organic membrane filter concentrate reaches 7 times of oil concentration in ceramic membrane clear liquid in storage tank, this
When intermediate storage tank in liquid be organic film concentrate, oil concentration therein is 21g/L, and organic film concentrate is defeated through charging pump
Deliver to concentration liquid storage tank.
4th, concentrate reuse is to oil bath system
The concentrate concentrated in liquid storage tank adds oil bath system by measuring pump, to adjust oil concentration therein normal
Processing range in.
5th, cleaning filter
After the recovery system end of run, the coarse filter in system, purpose ceramic-film filter and organic membrane filter device are entered
Row backwash.
After being reclaimed using recovery method of the present invention to the finish in vinal production process, from oil bath system
Waste discharge is that the oil concentration in organic film clear liquid is 0.15mg/L.
Embodiment 2：
The recovery method of finish is as follows in vinal production process in the present embodiment：
1st, coarse filter carries out micro-filtration
The oil concentration of oil bath system intermittence discharge is collected for the 9g/L oil-containing aqueous solution into crude oil storage tank, contains
Oil solution is pumped to the coarse filter that filtering accuracy is 10 μm and is carried out micro-filtration by being fed, remove fiber therein, mechanical admixture,
The large granular impurities such as microorganism.
2nd, purpose ceramic-film filter carries out ultrafiltration
The oil-containing aqueous solution after micro-filtration is pumped to the purpose ceramic-film filter that filtering accuracy is 100nm and surpassed by circulating
Filter, by the centrifugation of ceramic membrane, is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts by the oil-containing aqueous solution.Pottery
Porcelain film clear liquid is collected into intermediate storage tank, and ceramic membrane filter concentrate is then back to crude oil storage tank and carries out circulation micro-filtration and super
Filter, stops when the cycles of concentration of ceramic membrane filter concentrate in crude oil storage tank reaches 2 times of oil concentration in the oil-containing aqueous solution
Filtering, now the liquid in crude oil storage tank is ceramic membrane concentrate, and oil concentration therein is 18g/L, ceramic membrane concentrate warp
Charging pump is delivered to concentration liquid storage tank.The ceramic membrane clear liquid collected in intermediate storage tank, its oil concentration is 5g/L.
3rd, organic membrane filter device carries out osmosis filtration
Ceramic membrane clear liquid in intermediate storage tank is pumped to filtering accuracy for 1nm organic membrane filters device and is carried out counter-infiltration by circulating
Filtering, ceramic membrane clear liquid is divided into organic membrane filter concentrate and organic film clear liquid two parts by organic film, and organic film clear liquid can be straight
Run in into sewage disposal system, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, treats centre
Stop filtering when the cycles of concentration of organic membrane filter concentrate reaches 4 times of oil concentration in ceramic membrane clear liquid in storage tank, now
Liquid in intermediate storage tank is organic film concentrate, and oil concentration therein is 20g/L, and organic film concentrate is conveyed through charging pump
To concentration liquid storage tank.
4th, concentrate reuse is to oil bath system
The concentrate concentrated in liquid storage tank adds oil bath system by measuring pump, to adjust oil concentration therein normal
Processing range in.
5th, cleaning filter
After the recovery system end of run, the coarse filter in system, purpose ceramic-film filter and organic membrane filter device are entered
Row backwash.
After being reclaimed using the recovery method of the present invention to the finish in vinal production process, from oil bath system
System waste discharge is that the oil concentration in organic film clear liquid is 0.42mg/L.
Embodiment 3：
The recovery method of finish is as follows in vinal production process in the present embodiment：
1st, coarse filter carries out micro-filtration
The oil concentration of oil bath system intermittence discharge is collected for the 6g/L oil-containing aqueous solution into crude oil storage tank, contains
Oil solution is pumped to the coarse filter progress micro-filtration that filtering accuracy is 0.5 μm by being fed, and removes fiber therein, machinery miscellaneous
The large granular impurities such as matter, microorganism.
2nd, purpose ceramic-film filter carries out ultrafiltration
The oil-containing aqueous solution after micro-filtration is pumped to the purpose ceramic-film filter progress ultrafiltration that filtering accuracy is 10nm by circulating,
By the centrifugation of ceramic membrane, the oil-containing aqueous solution is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts.Ceramics
Film clear liquid is collected into intermediate storage tank, and ceramic membrane filter concentrate is then back to crude oil storage tank and carries out circulation micro-filtration and super
Filter, stops when the cycles of concentration of ceramic membrane filter concentrate in crude oil storage tank reaches 4 times of oil concentration in the oil-containing aqueous solution
Filtering, now the liquid in crude oil storage tank is ceramic membrane concentrate, and oil concentration therein is 24g/L, ceramic membrane concentrate warp
Charging pump is delivered to concentration liquid storage tank.The ceramic membrane clear liquid collected in intermediate storage tank, its oil concentration is 3.8g/L.
3rd, organic membrane filter device carries out osmosis filtration
Ceramic membrane clear liquid in intermediate storage tank is pumped to filtering accuracy for 0.4nm organic membrane filters device and is carried out reverse osmosis by circulating
Through filter, ceramic membrane clear liquid is divided into organic membrane filter concentrate and organic film clear liquid two parts by organic film, and organic film clear liquid can
Sewage disposal system is directly discharged into, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, in treating
Between stop filtering when the cycles of concentration of organic membrane filter concentrate reaches 5 times of oil concentration in ceramic membrane clear liquid in storage tank, this
When intermediate storage tank in liquid be organic film concentrate, oil concentration therein is 19g/L, and organic film concentrate is defeated through charging pump
Deliver to concentration liquid storage tank.
4th, concentrate reuse is to oil bath system
The concentrate concentrated in liquid storage tank adds oil bath system by measuring pump, to adjust oil concentration therein normal
Processing range in.
5th, cleaning filter
After the recovery system end of run, the coarse filter in system, purpose ceramic-film filter and organic membrane filter device are entered
Row backwash.
After being reclaimed using the recovery method of the present invention to the finish in vinal production process, from oil bath system
System waste discharge is that the oil concentration in organic film clear liquid is 0.22mg/L.
Embodiment 4：
The recovery method of finish is as follows in vinal production process in the present embodiment：
1st, coarse filter carries out micro-filtration
The oil concentration of oil bath system intermittence discharge is collected for the 8g/L oil-containing aqueous solution into crude oil storage tank, contains
Oil solution is pumped to the coarse filter that filtering accuracy is 5 μm and is carried out micro-filtration by being fed, remove fiber therein, mechanical admixture,
The large granular impurities such as microorganism.
2nd, purpose ceramic-film filter carries out ultrafiltration
The oil-containing aqueous solution after micro-filtration is pumped to the purpose ceramic-film filter progress ultrafiltration that filtering accuracy is 70nm by circulating,
By the centrifugation of ceramic membrane, the oil-containing aqueous solution is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts.Ceramics
Film clear liquid is collected into intermediate storage tank, and ceramic membrane filter concentrate is then back to crude oil storage tank and carries out circulation micro-filtration and super
Filter, stops when the cycles of concentration of ceramic membrane filter concentrate in crude oil storage tank reaches 3.5 times of oil concentration in the oil-containing aqueous solution
Only filter, now the liquid in crude oil storage tank is ceramic membrane concentrate, oil concentration therein is 28g/L, ceramic membrane concentrate
Concentration liquid storage tank is delivered to through charging pump.The ceramic membrane clear liquid collected in intermediate storage tank, its oil concentration is 4.3g/L.
3rd, organic membrane filter device carries out osmosis filtration
Ceramic membrane clear liquid in intermediate storage tank is pumped to filtering accuracy for 0.7nm organic membrane filters device and is carried out reverse osmosis by circulating
Through filter, ceramic membrane clear liquid is divided into organic membrane filter concentrate and organic film clear liquid two parts by organic film, and organic film clear liquid can
Sewage disposal system is directly discharged into, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, in treating
Between stop filtering when the cycles of concentration of organic membrane filter concentrate reaches 6 times of oil concentration in ceramic membrane clear liquid in storage tank, this
When intermediate storage tank in liquid be organic film concentrate, oil concentration therein be 25.8g/L, organic film concentrate is through charging pump
It is delivered to concentration liquid storage tank.
4th, concentrate reuse is to oil bath system
The concentrate concentrated in liquid storage tank adds oil bath system by measuring pump, to adjust oil concentration therein normal
Processing range in.
5th, cleaning filter
After the recovery system end of run, the coarse filter in system, purpose ceramic-film filter and organic membrane filter device are entered
Row backwash.
After being reclaimed using the recovery method of the present invention to the finish in vinal production process, from oil bath system
System waste discharge is that the oil concentration in organic film clear liquid is 0.35mg/L.
Embodiment 5：
The recovery method of finish is as follows in vinal production process in the present embodiment：
1st, coarse filter carries out micro-filtration
The oil concentration of oil bath system intermittence discharge is collected for the 7.1g/L oil-containing aqueous solution into crude oil storage tank,
The oil-containing aqueous solution is pumped to the coarse filter progress micro-filtration that filtering accuracy is 3 μm by being fed, and removes fiber therein, machinery miscellaneous
The large granular impurities such as matter, microorganism.
2nd, purpose ceramic-film filter carries out ultrafiltration
The oil-containing aqueous solution after micro-filtration is pumped to the purpose ceramic-film filter progress ultrafiltration that filtering accuracy is 40nm by circulating,
By the centrifugation of ceramic membrane, the oil-containing aqueous solution is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts.Ceramics
Film clear liquid is collected into intermediate storage tank, and ceramic membrane filter concentrate is then back to crude oil storage tank and carries out circulation micro-filtration and super
Filter, stops when the cycles of concentration of ceramic membrane filter concentrate in crude oil storage tank reaches 4 times of oil concentration in the oil-containing aqueous solution
Filtering, now the liquid in crude oil storage tank is ceramic membrane concentrate, and oil concentration therein is 28.4g/L, ceramic membrane concentrate
Concentration liquid storage tank is delivered to through charging pump.The ceramic membrane clear liquid collected in intermediate storage tank, its oil concentration is 3.6g/L.
3rd, organic membrane filter device carries out osmosis filtration
Ceramic membrane clear liquid in intermediate storage tank is pumped to filtering accuracy for 0.5nm organic membrane filters device and is carried out reverse osmosis by circulating
Through filter, ceramic membrane clear liquid is divided into organic membrane filter concentrate and organic film clear liquid two parts by organic film, and organic film clear liquid can
Sewage disposal system is directly discharged into, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, in treating
Between stop filtering when the cycles of concentration of organic membrane filter concentrate reaches 5.5 times of oil concentration in ceramic membrane clear liquid in storage tank,
Now the liquid in intermediate storage tank is organic film concentrate, and oil concentration therein is 19.8g/L, and organic film concentrate is through feed
Pump is delivered to concentration liquid storage tank.
4th, concentrate reuse is to oil bath system
The concentrate concentrated in liquid storage tank adds oil bath system by measuring pump, to adjust oil concentration therein normal
Processing range in.
5th, cleaning filter
After the recovery system end of run, the coarse filter in system, purpose ceramic-film filter and organic membrane filter device are entered
Row backwash.
After being reclaimed using the recovery method of the present invention to the finish in vinal production process, from oil bath system
System waste discharge is that the oil concentration in organic film clear liquid is 0.29mg/L.
Claims (10)
1. the recovery method of finish in a kind of vinal production process, it is characterised in that comprise the following steps：
Step 1：Coarse filter carries out micro-filtration
The oil-containing aqueous solution of oil bath system intermittence discharge is collected into crude oil storage tank, and the oil-containing that crude oil storage tank is collected is water-soluble
Liquid is pumped to coarse filter progress micro-filtration by being fed, and removes the large granular impurities such as fiber therein, mechanical admixture, microorganism；
Step 2：Purpose ceramic-film filter carries out ultrafiltration
The oil-containing aqueous solution after micro-filtration is pumped to purpose ceramic-film filter progress ultrafiltration by circulating, and the separation for passing through ceramic membrane is made
With, the oil-containing aqueous solution is divided into ceramic membrane filter concentrate and ceramic membrane clear liquid two parts, ceramic membrane clear liquid enters intermediate storage tank,
Ceramic membrane filter concentrate is then back to crude oil storage tank and carries out circulation micro-filtration and ultrafiltration；Treat that ceramic membrane filter is concentrated in crude oil storage tank
The cycles of concentration of liquid stops filtering when reaching setting value, and now the liquid in crude oil storage tank is ceramic membrane concentrate, and ceramic membrane is dense
Contracting liquid is delivered to concentration liquid storage tank through charging pump；
Step 3：Organic membrane filter device carries out osmosis filtration
Ceramic membrane clear liquid in intermediate storage tank is pumped to organic membrane filter device progress osmosis filtration, ceramic membrane clear liquid quilt by circulating
Organic film is divided into organic membrane filter concentrate and organic film clear liquid two parts, and wherein organic film clear liquid can be directly discharged into sewage disposal
System, organic membrane filter concentrate is then back to intermediate storage tank and carries out circulation osmosis filtration, treats organic film mistake in intermediate storage tank
The cycles of concentration of filter concentration liquid stops filtering when reaching setting value, and now the liquid in intermediate storage tank is organic film concentrate, is had
Machine film concentrate is delivered to concentration liquid storage tank through charging pump；
Step 4：Concentrate reuse is to oil bath system
The concentrate in liquid storage tank is concentrated according to production technology needs, oil bath system is added by measuring pump, it is therein to adjust
Oil concentration.
2. recovery method according to claim 1, it is characterised in that：
In step 1, oil concentration is 5g/L~9g/L in the oil-containing aqueous solution.
3. recovery method according to claim 1, it is characterised in that：
In step 1, the filtering accuracy scope of coarse filter is 0.1 μm~10 μm.
4. recovery method according to claim 1, it is characterised in that：
In step 2, the concentration of finish is 2~7 times of oil concentration in the initial oil-containing aqueous solution in the ceramic membrane concentrate.
5. recovery method according to claim 1, it is characterised in that：
In step 2, the filtering accuracy scope of purpose ceramic-film filter is 1nm~100nm.
6. recovery method according to claim 1, it is characterised in that：
In step 3, the concentration of finish is 2~7 times of oil concentration in ceramic membrane clear liquid in the organic film concentrate.
7. recovery method according to claim 1, it is characterised in that：
In step 3, the filtering accuracy scope of organic membrane filter device is 0.1nm~1nm.
8. the recovery system of finish in a kind of vinal production process, it is characterised in that：Including the crude oil being sequentially connected
Storage tank, coarse filter, purpose ceramic-film filter, intermediate storage tank and organic membrane filter device；In addition, set in purpose ceramic-film filter
It is equipped with pipeline with crude oil storage tank to be connected, be provided with pipeline in organic membrane filter device is connected with intermediate storage tank；It is additionally provided with dense
Contracting liquid storage tank, the concentration liquid storage tank is connected by pipeline with crude oil storage tank and intermediate storage tank respectively.
9. recovery system according to claim 8, it is characterised in that：
Crude oil storage tank is used to collect the oil-containing aqueous solution of oil bath system intermittence discharge and obtained after purpose ceramic-film filter ultrafiltration
The ceramic membrane filter concentrate obtained；
Coarse filter is used to carry out micro-filtration to the oil-containing aqueous solution collected in crude oil storage tank, remove fiber therein, mechanical admixture,
The large granular impurities such as microorganism；
Purpose ceramic-film filter is used to carry out ultrafiltration to the oil-containing aqueous solution after coarse filter micro-filtration, and the oil-containing aqueous solution is divided into pottery
Porcelain is film filtration concentrated and ceramic membrane clear liquid two parts；
Intermediate storage tank is used to store the ceramic membrane clear liquid that obtains after purpose ceramic-film filter ultrafiltration and anti-through organic membrane filter device
The organic membrane filter concentrate obtained after permeation filtration；
Organic membrane filter device is used to carry out osmosis filtration to the ceramic membrane clear liquid that intermediate storage tank is stored, and ceramic membrane clear liquid is divided into
Organic membrane filter concentrate and organic film clear liquid two parts；
Concentration liquid storage tank is used to store to reach in crude oil storage tank in certain density ceramic membrane filter concentrate and intermediate storage tank
Reach certain density organic membrane filter concentrate.
10. recovery system according to claim 8 or claim 9, it is characterised in that：
The filtering accuracy scope of coarse filter is 0.1 μm~10 μm；
The filtering accuracy scope of purpose ceramic-film filter is 1nm~100nm；
The filtering accuracy scope of organic membrane filter device is 0.1nm~1nm.
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Denomination of invention: A method and system for recovering oil agents in the production process of polyvinyl alcohol fibers Effective date of registration: 20231120 Granted publication date: 20200218 Pledgee: Industrial and Commercial Bank of China Limited Chaohu sub branch Pledgor: ANHUI WANWEI UPDATED HIGH-TECH MATERIAL INDUSTRY Co.,Ltd. Registration number: Y2023980066338 |