CN209226757U - A kind of non-wood plant paper-mill black liquor and development as resource processing system - Google Patents
A kind of non-wood plant paper-mill black liquor and development as resource processing system Download PDFInfo
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- CN209226757U CN209226757U CN201821641816.2U CN201821641816U CN209226757U CN 209226757 U CN209226757 U CN 209226757U CN 201821641816 U CN201821641816 U CN 201821641816U CN 209226757 U CN209226757 U CN 209226757U
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Abstract
The utility model relates to a kind of non-wood plant paper-mill black liquor and development as resource processing systems.The utility model processing non-wood plant black liquid is using advanced membrane separation technique, lignin and oligosaccharide are realized by pressure membrane process, inorganic base efficiently separates, the recycling of water is realized in the separation for realizing alkali and organic matter by electric drive membrane separation process again finally by reverse osmosis membrane separation technology.Above-mentioned processing non-wood plant black liquid technique, both the drawbacks of having overcome traditionally alkali recovery process, being effectively treated for alkali collection and organic matter is realized again, it is the innovation technique of zero discharge for solving non-wood plant paper-making black liquor, it is mostly the energy conservation and environmental protection technology that country advocates in applied technique.
Description
Technical field
The utility model relates to sewage treatment fields, more particularly, to a kind of processing of non-wood plant paper-mill black liquor and development as resource
System.
Background technique
China is papermaking big country, and consumption big country, while being Papermaking Resource shortage, especially inadequate forest resources again
Country.As mainstay of the national economy industry, straw papermaking is to solve current domestic paper making raw material deficiency, and it is raw to improve papermaking
The effective way of production capacity power, and more than 8.4 hundred million tons of the annual stalk yield in China, if fibre resources abundant are not used, just
At will burn or bury the waste that will cause resource.Especially crop straw burning, the PM2.5 of generation will cause serious environment dirty
Dye, while burning the risk for being faced with forest fire.The a large amount of recycling and reusings of stalk, meet resource recycling Economic concept.
In general, stalk is big for the black liquid viscosity of raw material, calorific value is low, silicone content is high.Slurrying enterprise is unable to satisfy
The requirement of alkali recovery process continuous operation, this is also that puzzlement stalk fibre raw material is difficult to form larger large-scale papermaking enterprise
One of the reason of.Ammonium Sulfite Method papermaking at present, the short papery of fiber drop is poor after boiling, although the ammonia-containing water of discharge can fertilize the soil,
But the hardening soil, unsustainable development can be caused after the several years.Straw pulp black liquor lignin by acid separation method may only extract lignin, remaining
Acid waste water seriously pollutes environment.And materialization flocculent precipitation is chiefly used in administering the lower waste water of concentration, it is difficult to which processing is more highly concentrated
The black liquor of degree.
Stalk black liquor contains lignin, polysaccharide (hemicellulose, pectin, oligosaccharide, monosaccharide or its sour sodium) and sodium salt (nothing
Machine sodium salt, organic acid or sodium phenolate) three big ingredients, wherein lignin and pectin have dissolves in alkaline solution, and in acidity
The characteristic of Precipitation in solution.Silica mostly exists in straw pulp black liquor with sodium salt, except silicon is to solve waste liquid matter of utmost importance.
Stalk black liquor mainly includes straw black liquor and wheat straw black liquor etc., wherein black liquor main component are as follows: total solid (g/l)
70.0-135.0；Organic matter (g/l) 45.0-95.0；Lignin (g/l) 14.0-35.0；Volatile acid (g/l) 7.6-12.25；It is inorganic
Object (g/l) 18.86-40.85；Total alkali (g/l) 8.0-28.55；Silica (g/l) 2.96-9.76.
Utility model content
The purpose of this utility model is exactly to provide a kind of non-timber plant to overcome the problems of the above-mentioned prior art
Object paper-mill black liquor and development as resource processing system.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of non-wood plant paper-mill black liquor and development as resource processing system, the system comprises preprocessor, nanofiltration device with
Electrodialysis plant,
The preprocessor import is for feeding, outlet connection nanofiltration device, for being pre-processed to black liquid,
The nanofiltration device obtains nanofiltration membrane concentrate and filters out with nanofiltration membrane for separating to pretreated waste liquid
Liquid,
The electrodialysis plant carries out electrodialysis process for receiving nanofiltration membrane filter liquor, and to nanofiltration membrane filter liquor, obtains
To height containing lye and dealkalize liquid.
In one embodiment of the utility model, the system also includes reverse osmosis unit,
The reverse osmosis unit is for receiving dealkalize liquid, for carrying out reverse osmosis separation to dealkalize liquid, for obtaining reverse osmosis
Permeable membrane concentrate filters out water with reverse osmosis.
In one embodiment of the utility model, the system also includes vaporising device and spray-drying installation,
The vaporising device is concentrated by evaporation, institute for receiving nanofiltration membrane concentrate and/or reverse osmosis membrane concentrate
Spray-drying installation is stated for being spray-dried to evaporation gained concentrate, to obtain powder product, powder product is with alkali
Based on lignin, and contain the mixture of a small amount of hemicellulose and inorganic salts.
In one embodiment of the utility model, the system comprises head tank, preprocessor, nanofiltration device, electric osmoses
Analysis apparatus, recycling alkali tank, feed liquid collecting tank, reverse osmosis unit, reuse water collecting tank and concentrate collecting tank after dealkalize, it is described into
The outlet of batch can is connect with the import of the preprocessor, and the outlet of the preprocessor is connect with the nanofiltration device import,
The concentrated solution outlet of the nanofiltration device is connect with the concentrate collecting tank entrance, the filtrate outlet of the nanofiltration device with
The electrodialysis plant entrance connection, there are two outlets, including height to contain lye export and de- lye export for the electrodialysis plant,
Described high containing lye export connection recycling alkali tank, the de- lye export is connect with feed liquid collecting tank entrance after the dealkalize, institute
The outlet for stating feed liquid collecting tank after dealkalize is connect with the reverse osmosis unit entrance, the concentrated solution outlet of the reverse osmosis unit with
The concentrate collecting tank entrance connection, the reverse osmosis unit filter out water out and reuse water collecting tank entrance company
It connects.
In one embodiment of the utility model, heat-exchanger rig is equipped in the head tank, for realizing to material pot
The cooling or heating of interior material, the heat-exchanger rig are heat exchanger, can also be realized using coil pipe and electric heating equipment.
In one embodiment of the utility model, it is arranged between the outlet and the import of the filter of the head tank
There is feed pump, nanofiltration device feed pump, the nanofiltration are provided between the outlet of the filter and the nanofiltration device import
Electrodialysis plant feed pump, the dealkalize are provided between the import of the feed compartment of the filtrate outlet and electrodialysis plant of device
Reverse osmosis unit feed pump is equipped between the outlet of feed liquid collecting tank and the reverse osmosis unit entrance afterwards.
In one embodiment of the utility model, the preprocessor is filter.
In one embodiment of the utility model, the electrodialysis plant be respectively by anode membrane and cavity block form two every
Two compartment type bipolar membrane electrodialysis device of room electrodialysis plant or anode membrane/Bipolar Membrane configuration.
In one embodiment of the utility model, two compartment electrodialysis plants being made of anode membrane and cavity block, i.e., routinely
Electrodialysis plant includes feed compartment, alkaline chamber, pole room, electrodialytic membranes membrane stack (including anode membrane, cavity block), electrodialysis plant feed pump and
Pole room circulating pump, alkaline chamber circulating pump, feed compartment circulating pump, the electrodialytic membranes membrane stack be provided with tetra- imports of A, B, C and D and
A ', B ', C ' and D ' four outlets, the A import and the outlet A ' of the electrodialytic membranes membrane stack connect and compose circulation, institute with feed compartment
It states the B import of electrodialytic membranes membrane stack and the outlet B ' connects and composes circulation, the C import of the electrodialytic membranes membrane stack and D ' with alkaline chamber
Outlet connects and composes circulation with pole room, and the D import of the electrodialytic membranes membrane stack is connect with the outlet C ', and the feed compartment is additionally provided with
One import and outlet, the import of the feed compartment and the filtrate outlet of nanofiltration device connect, and the outlet of the feed compartment is
De- lye export, connect, the alkaline chamber is additionally provided with an outlet, as high to go out containing lye with feed liquid collecting tank entrance after the dealkalize
Mouthful, it is described high containing lye export connection recycling alkali tank.
In one embodiment of the utility model, two compartment type bipolar membrane electrodialysis device of anode membrane/Bipolar Membrane configuration,
The i.e. described bipolar membrane electrodialysis device includes feed compartment, alkaline chamber, anode chamber, cathode chamber, Bipolar Membrane membrane stack, bipolar membrane electrodialysis dress
Feed pump and circulating pump are set, the Bipolar Membrane membrane stack is provided with tetra- imports of A, B, C and D and A ', B ', C ' and D ' four outlets,
The A import and the outlet A ' of the Bipolar Membrane membrane stack connect and compose circulation, the B import of the Bipolar Membrane membrane stack and B ' with feed compartment
Outlet connects and composes circulation with alkaline chamber, and the C import and the outlet C ' of the Bipolar Membrane membrane stack connect and compose circulation with anode chamber,
The D import of the Bipolar Membrane membrane stack and the outlet D ' connect and compose circulation with cathode chamber, the feed compartment be additionally provided with an import and
Outlet, the import of the feed compartment and the filtrate outlet of nanofiltration membrane connect, and the outlet of the feed compartment is de- lye export,
It is connect with feed liquid collecting tank entrance after the dealkalize, the alkaline chamber is additionally provided with an outlet, and as high to contain lye export, the height contains
Lye export connection recycling alkali tank.
Compared with prior art, the utility model processing non-wood plant black liquid is using advanced UF membrane skill
Art, realizes lignin and oligosaccharide by pressure membrane process, inorganic base efficiently separates, then passes through electric drive membrane separation process
The recycling of water is realized in the separation for realizing alkali and organic matter finally by reverse osmosis membrane separation technology.Above-mentioned processing is non-wood
Material plant black liquid technique, the drawbacks of not only having overcome traditionally alkali recovery process, but also realize having for alkali collection and organic matter
Effect processing, is the innovation technique of zero discharge for solving non-wood plant paper-making black liquor, is mostly country in applied technique
The energy conservation and environmental protection technology advocated.
Detailed description of the invention
Fig. 1 is non-wood plant paper-mill black liquor and development as resource processing system structural schematic diagram in embodiment 1；
Fig. 2 is non-wood plant paper-mill black liquor and development as resource processing technological flow figure in embodiment 2；
Fig. 3 is non-wood plant paper-mill black liquor and development as resource processing system structural schematic diagram in embodiment 4.
In Fig. 1,1 head tank；2 feed pumps；3 filters；4 nanofiltration device feed pumps；5 nanofiltration devices；The charging of 6 feed compartments
Pump；7 feed compartments；8 alkaline chambers；9 anode chambers；10 cathode chambers；11 cathode chamber circulating pumps；12 anode chamber's circulating pumps；13 alkaline chamber circulating pumps；
14 feed compartment circulating pumps；15 Bipolar Membrane membrane stacks；16 recycling alkali tanks；Feed liquid collecting tank after 17 dealkalizes；18 reverse osmosis unit feed pumps；
19 reverse osmosis units；20 reuse water collecting tanks；21 concentrate collecting tanks.
In Fig. 3,1 head tank；2 feed pumps；3 filters；4 nanofiltration device feed pumps；5 nanofiltration devices；The charging of 6 feed compartments
Pump；7 feed compartments；8 alkaline chambers；9-1 pole room；12-1 pole room circulating pump；13 alkaline chamber circulating pumps；14 feed compartment circulating pumps；15-1 electric osmose
Analyse film membrane stack；16 recycling alkali tanks；Feed liquid collecting tank after 17 dealkalizes；18 reverse osmosis unit feed pumps；19 reverse osmosis units；20 reuses
Water collecting tank；21 concentrate collecting tanks.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
A kind of non-wood plant paper-mill black liquor and development as resource processing system, such as Fig. 1, described device include head tank 1, filter
3, feed liquid after nanofiltration device 5, feed compartment 7, alkaline chamber 8, anode chamber 9, cathode chamber 10, Bipolar Membrane membrane stack 15, recycling alkali tank 16, dealkalize
Collecting tank 17, reverse osmosis unit 19, reuse water collecting tank 20 and concentrate collecting tank 21, the outlet of the head tank 1 with it is described
The import of filter 3 connects, and the outlet of the filter 3 is connect with 5 import of nanofiltration device, the nanofiltration device 5 it is dense
The outlet of contracting liquid is connect with 21 entrance of concentrate collecting tank, the filtrate outlet of the nanofiltration device 5 and the feed compartment 7 into
Two outlets are arranged in mouth connection, the feed compartment 7, and one of outlet of feed compartment 7 and the A import of the Bipolar Membrane membrane stack 15 connect
Connect, while the feed compartment 7 be connected to by the outlet A ' of the Bipolar Membrane membrane stack 15, another feed compartment 7 outlet with it is described
17 entrance of feed liquid collecting tank connects after dealkalize, the outlet of feed liquid collecting tank 17 and 19 entrance of reverse osmosis unit after the dealkalize
Connection, the concentrated solution outlet of the reverse osmosis unit 19 are connect with 21 entrance of concentrate collecting tank, the reverse osmosis unit
19 water out that filters out is connect with 20 entrance of reuse water collecting tank.
In the present embodiment, bipolar membrane electrodialysis device includes feed compartment, alkaline chamber, anode chamber, cathode chamber, Bipolar Membrane membrane stack,
Bipolar membrane electrodialysis device feed pump and circulating pump, the Bipolar Membrane membrane stack are provided with tetra- imports of A, B, C and D and A ', B ', C '
It is exported with D ' four, the A import and the outlet A ' of the Bipolar Membrane membrane stack connect and compose circulation, the Bipolar Membrane film with feed compartment
The B import of heap and the outlet B ' connect and compose circulation with alkaline chamber, the C import of the Bipolar Membrane membrane stack with the outlet C ' and anode chamber
Circulation is connected and composed, the D import and the outlet D ' of the Bipolar Membrane membrane stack connect and compose circulation with cathode chamber, and the feed compartment is also
Equipped with an import and outlet, the import of the feed compartment and the filtrate outlet of nanofiltration device are connected, the outlet of the feed compartment
As de- lye export, connect with feed liquid collecting tank entrance after the dealkalize, and the alkaline chamber is additionally provided with an outlet, as high to contain alkali
Liquid outlet, it is described high containing lye export connection recycling alkali tank.
Embodiment 2
With reference to Fig. 2, non-wood plant paper-mill black liquor and development as resource treatment process is carried out, comprising the following steps:
(1) pre-process: non-wood plant black liquid passes through filter, removes the solid impurity in feed liquid and suspension
Object；
(2) nanofiltration UF membrane: enter nanofiltration device separation by pretreated feed liquid, the filter liquor of nanofiltration membrane enters bipolar
Membrane electrodialysis device carries out electrodialysis process, and the concentrate of nanofiltration membrane is concentrated by evaporation, spray drying obtains powder product；
(3) electrodialysis process: the filter liquor of nanofiltration membrane is separated into height and contains lye and dealkalize liquid by bipolar membrane electrodialysis device,
Height is used for slurrying reuse containing lye, and dealkalize liquid enters reverse osmosis membrane processing；
(4) reverse osmosis membrane separation: dealkalize liquid is separated into concentrate and filters out water by reverse osmosis unit, reverse osmosis unit it is dense
Contracting liquid is concentrated by evaporation, spray drying obtains powder product, and the reverse osmosis unit filters out water for pulp washing reuse or for diluting
Height contains lye, or is back to use in nanofiltration process as water-dialyzing.
Specifically, black liquid is collected is equipped with coil pipe cooling and electric heater unit in head tank 1, tank, cools down or add
Heat is to guarantee the feeding temperature of nanofiltration device 5 at 40-50 DEG C.Feed pump 2 is transported to feed liquid in filter 3 and is pre-processed,
Remove the suspended matter in feed liquid, nanofiltration device feed pump 4 is being transported to nanofiltration device 5 by pretreated feed liquids, water and small point
Sub- material permeance film enters in nanofiltration filtrate, and macromolecular substances are trapped in concentrate, dense after concentrate reaches a certain concentration
The nanofiltration membrane concentrate of contracting is collected in concentrate collecting tank 21 after mixing with subsequent reverse osmosis membrane concentrate, and concentrate passes through steaming
Hair, spray drying obtain lignin product.Nanofiltration membrane filter liquor enters feed compartment 7 by feed compartment feed pump 6, and alkaline chamber 8 adds
Enter pure water or dilute alkaline soln, sulfuric acid solution is added in anode chamber 9, and sodium hydroxide solution is added in cathode chamber 10.The hydrogen of cathode chamber 10
Sodium hydroxide solution passes through anode chamber's circulating pump 12, the pure water of alkaline chamber 8 by the sulfuric acid solution of cathode chamber circulating pump 11, anode chamber 9
By the feed liquid of alkaline chamber circulating pump 13, feed compartment 7 by feed compartment circulating pump 14, respectively from the D point of Bipolar Membrane membrane stack 15, C point,
B point, A point enter Bipolar Membrane membrane stack 15, recycle lye by the selective penetrated property that Bipolar Membrane decomposes water and amberplex, point
It is not recycled into after D ' point, C ' point, B ' point, A ' outflows to cathode chamber 10, anode chamber 9, alkaline chamber 8, feed compartment 7, anode chamber
It can be recycled with the solution of cathode chamber.The pH value of feed liquid in feed compartment 7 close to after neutrality, collect by the lye in alkaline chamber 8
Can be with reuse in recycling alkali tank 16, the feed liquid in feed compartment 7 is collected after dealkalize in feed liquid collecting tank 17, reverse osmosis unit charging
Pump 18 is transported to the feed liquid after dealkalize in feed liquid collecting tank 17 in reverse osmosis unit 19, it is reverse osmosis can be all molten with effectively catching
The organic matter of salt and molecular weight greater than 100 is solved, reverse osmosis concentrated liquid and nanofiltration membrane concentrate mixed collection are in concentrate collecting tank
In 21, reverse osmosis filtrate collection recycles in reuse water collecting tank 20.
Wherein, non-wood plant black liquid includes that the stalks papermaking such as straw, wheat straw, reed, cornstalk, cotton linter is black
Liquid.
Embodiment 3
Certain strand of straw pulp black liquor, conductivity 79.11ms/cm, solid content 11.02%.
Pretreatment: taking straw pulp black liquor, filters by 10 micron cloth bags, except the solid impurity and suspended matter in feed liquid.
Nanofiltration concentration: the straw pulp black liquor 100kg obtained by pre-treatment step is taken, is poured into Matter Transfer tank, material follows
It is equipped with coil pipe cooling and electric heater unit in ring tank, guarantees the feeding temperature of nanofiltration concentration at 40 DEG C or so.Starting pump, operation pressure
Power is to 20Bar, and under the effect of the pressure, water, ion and small-molecule substance enter filter liquor pipeline through film to material, and trapped fluid returns
Stream enters Matter Transfer tank.When being concentrated to solid content 25%, concentration process terminates.Obtained concentrate quality 34.0kg, Gu
Content 13.46%, obtained filtrate quality 64.5kg, solid content 4.42%.
Nanofiltration discharge: when concentrate reaches requirement, concentration process terminates；With pure water by the remaining feed liquid top in membranous system
It washes in material pot, side by side empty material circulating tank.
The assembling of Bipolar Membrane membrane stack: this set technique uses two compartment type Bipolar Membrane membrane stack of anode membrane/Bipolar Membrane configuration.
Alkali collection: the H of 0.5M is added into anode chamber2SO40.6M NaOH solution, feed compartment are added in cathode chamber for solution
Softened water is added in alkaline chamber in the middle filter liquor that aforementioned nanofiltration process is added and obtains, and first turn on pump adjusts flow, first recycles several minutes.
Rectifier switch then is opened, using the mode of operation of constant current after first constant pressure: the incipient stage of alkali recovery process, voltage gradually increase
Add, is the upper limit when voltage increases to 16.8V, adjusts rectifier switch at this time, be changed into constant current operational mode, maximum current is not
More than 9A.Under DC electric field effect, directional migration occurs for ion in solution, cation exchange layer and anion exchange layer
The H of water layer at border2O is cracked into H+And OH-, and pass through cation exchange layer and anion exchange layer respectively.When feed compartment material
When the pH of liquid is close to neutral (pH 9~10.5), as the terminal of alkali collection, the feed liquid alkali content 5% in alkaline chamber tank at this time.
Reverse osmosis membrane concentration: pass through the step for reverse osmosis available pure water.By the partial neutral after recycling alkali
Nanofiltration filtrate 64.5kg is poured into reverse osmosis Matter Transfer tank, starts high-pressure pump, adjusts operating pressure to 30Bar, make material into
Enter membranous system.Under the effect of the pressure, pure water enters filter liquor pipeline, the trapped fluid reflux of ion and small-molecule substance through film
Into Matter Transfer tank.When increasing to 36.5Bar into film pressure, transmembrane pressure reaches 1.5Bar, and concentration process terminates.By anti-
Osmosis concentration process, obtained concentrate quality 19kg.Obtained pure water filtrate quality 45kg, through water quality detection, pH 7.78,
32 times of coloration, COD 98mg/L, BOD69.7mg/L, ammonia nitrogen 2.65mg/L.
Description through the foregoing embodiment, it is known that the present embodiment processing black liquid of straw pulp paper-making is using advanced UF membrane skill
Art, realizes lignin and oligosaccharide by pressure membrane process, inorganic base efficiently separates, then passes through electric drive membrane separation process
The recycling of water is realized in the separation for realizing alkali and organic matter finally by reverse osmosis membrane separation technology.Above-mentioned processing straw pulp
Technique, the drawbacks of not only having overcome traditionally alkali recovery process, but also being effectively treated for alkali collection and organic matter is realized, it is to solve grass
The innovation technique of zero discharge for starching black liquor pollution is mostly the energy conservation and environmental protection technology that country advocates in applied technique.
Embodiment 4
With reference to Fig. 3, compared with Example 1, in the present embodiment, electrodialysis plant is carried out using conventional electrodialysis plant,
His structure is the same as embodiment 1.
Conventional electrodialysis plant includes feed compartment 7, alkaline chamber 8, pole room 9-1, electrodialytic membranes membrane stack 15-1 (including anode membrane, yin
Film), electrodialysis plant feed pump and pole room circulating pump 12-1, alkaline chamber circulating pump 13, feed compartment circulating pump 14, the electrodialytic membranes
Membrane stack 15-1 is provided with tetra- imports of A, B, C and D and A ', B ', C ' and D ' four outlets, the A import of the electrodialytic membranes membrane stack
Circulation is connected and composed with feed compartment with the outlet A ', the B import of the electrodialytic membranes membrane stack connect structure with alkaline chamber with the outlet B '
At circulation, the C import and the outlet D ' of the electrodialytic membranes membrane stack connect and compose circulation with pole room, the electrodialytic membranes membrane stack
D import is connect with the outlet C ', and the feed compartment is additionally provided with an import and outlet, the import of the feed compartment and the filter of nanofiltration device
Eluate outlet connection, the outlet of the feed compartment are de- lye export, are connect with feed liquid collecting tank entrance after the dealkalize, institute
It states alkaline chamber and is additionally provided with an outlet, as high to contain lye export, alkali tank is recycled in the high connection containing lye export.
In the present embodiment, electrodialysis is carried out using conventional electrodialysis plant and specifically uses following methods:
(1) feed liquid in feed compartment enters the A import of electrodialytic membranes membrane stack by feed compartment circulating pump, fills in electrodialysis
The alkali in feed compartment is set gradually to migrate to alkaline chamber, feed liquid from the A ' outlet return of electrodialytic membranes membrane stack to feed compartment, alkali migrate to
Alkaline chamber；In feed compartment after lye removing, discharge is placed in spare in tank；Dealkalize liquid is sent into reverse osmosis unit in feed compartment.After dealkalize
PH is that the feed liquid of 9-10.5 enters in feed liquid collecting tank；
(2) feed liquid in alkaline chamber enters the B import of electrodialytic membranes membrane stack by alkaline chamber circulating pump, in electrodialysis plant alkali
In room, from the B ' outlet return of electrodialytic membranes membrane stack to alkaline chamber, alkali concentration gradually increases feed liquid；Lye in alkaline chamber passes through pipeline
It flows into recycling alkali tank.
It can understand the above description of the embodiments is intended to facilitate those skilled in the art and use practical
It is novel.Person skilled in the art obviously easily can make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiments without having to go through creative labor.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art's announcement according to the present utility model, do not depart from improvement that the utility model scope is made and
Modification should be all within the protection scope of the utility model.
Claims (10)
1. a kind of non-wood plant paper-mill black liquor and development as resource processing system, which is characterized in that the system comprises preprocessor, receive
Device and electrodialysis plant are filtered,
The preprocessor import is for feeding, outlet connection nanofiltration device, for being pre-processed to black liquid,
The nanofiltration device is used to separate pretreated waste liquid, obtains nanofiltration membrane concentrate and nanofiltration membrane filter liquor,
The electrodialysis plant carries out electrodialysis process for receiving nanofiltration membrane filter liquor, and to nanofiltration membrane filter liquor, obtains height
Containing lye and dealkalize liquid.
2. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 1, which is characterized in that the system
System further includes reverse osmosis unit, and the reverse osmosis unit, for carrying out reverse osmosis separation to dealkalize liquid, is used for receiving dealkalize liquid
Water is filtered out with reverse osmosis in obtaining reverse osmosis membrane concentrate.
3. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 2, which is characterized in that the system
System further includes vaporising device, and the vaporising device is steamed for receiving nanofiltration membrane concentrate and/or reverse osmosis membrane concentrate
Hair concentration.
4. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 3, which is characterized in that the system
System further includes spray-drying installation, and the spray-drying installation is used to be spray-dried evaporation gained concentrate, to obtain
Powder product.
5. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 1, which is characterized in that described
System includes head tank, preprocessor, nanofiltration device, electrodialysis plant, recycling alkali tank, feed liquid collecting tank after dealkalize, reverse osmosis
The outlet of device, reuse water collecting tank and concentrate collecting tank, the head tank is connect with the import of the preprocessor, described
The outlet of preprocessor is connect with the nanofiltration device import, and the concentrated solution outlet of the nanofiltration device and the concentrate are collected
The connection of tank entrance, the filtrate outlet of the nanofiltration device are connect with the electrodialysis plant entrance, and the electrodialysis plant has
Two outlets, including height, containing lye export and de- lye export, the height connects recycling alkali tank, the dealkalize liquid containing lye export
Outlet is connect with feed liquid collecting tank entrance after the dealkalize, the outlet of feed liquid collecting tank and the reverse osmosis unit after the dealkalize
Entrance connection, the concentrated solution outlet of the reverse osmosis unit are connect with the concentrate collecting tank entrance, the reverse osmosis unit
The water out that filters out connect with the reuse water collecting tank entrance.
6. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 5, which is characterized in that described
Heat-exchanger rig is equipped in head tank, for realizing the cooling or heating to material in material pot.
7. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 1 or 5, which is characterized in that
The preprocessor is filter.
8. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 1 or 5, which is characterized in that
The electrodialysis plant is the two compartment electrodialysis plants or anode membrane/Bipolar Membrane configuration two being made of respectively anode membrane and cavity block
Compartment type bipolar membrane electrodialysis device.
9. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 8, which is characterized in that described
Bipolar membrane electrodialysis device includes feed compartment, alkaline chamber, anode chamber, cathode chamber, Bipolar Membrane membrane stack, bipolar membrane electrodialysis device charging
Pump and circulating pump, the Bipolar Membrane membrane stack is provided with tetra- imports of A, B, C and D and A ', B ', C ' and D ' four outlets, described double
The A import and the outlet A ' of pole film membrane stack connect and compose circulation with feed compartment, and the B import and the outlet B ' of the Bipolar Membrane membrane stack are equal
Circulation is connected and composed with alkaline chamber, the C import and the outlet C ' of the Bipolar Membrane membrane stack connect and compose circulation with anode chamber, described double
The D import and the outlet D ' of pole film membrane stack connect and compose circulation with cathode chamber, and the feed compartment is additionally provided with an import and outlet, institute
The filtrate outlet of the import and nanofiltration device of stating feed compartment connects, and the outlet of the feed compartment is de- lye export, with institute
Feed liquid collecting tank entrance connects after stating dealkalize, and the alkaline chamber is additionally provided with an outlet, as high to contain lye export.
10. a kind of non-wood plant paper-mill black liquor and development as resource processing system according to claim 8, which is characterized in that by
Two compartment electrodialysis plants of anode membrane and cavity block composition include feed compartment, alkaline chamber, pole room, electrodialytic membranes membrane stack, electrodialysis plant
Feed pump, pole room circulating pump, alkaline chamber circulating pump and feed compartment circulating pump, the electrodialytic membranes membrane stack include anode membrane, cavity block, described
Electrodialytic membranes membrane stack is provided with tetra- imports of A, B, C and D and A ', B ', C ' and D ' four outlets, the A of the electrodialytic membranes membrane stack
Import and the outlet A ' connect and compose circulation with feed compartment, and the B import and the outlet B ' of the electrodialytic membranes membrane stack connect with alkaline chamber
Composition circulation is connect, the C import and the outlet D ' of the electrodialytic membranes membrane stack connect and compose circulation, the electrodialytic membranes film with pole room
The D import of heap is connect with the outlet C ', and the feed compartment is additionally provided with an import and outlet, the import and nanofiltration device of the feed compartment
Filtrate outlet connection, the outlet of the feed compartment is de- lye export, is connected with feed liquid collecting tank entrance after the dealkalize
It connects, the alkaline chamber is additionally provided with an outlet, as high to contain lye export.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018213A (en) * | 2018-10-10 | 2020-04-17 | 上海凯鑫分离技术股份有限公司 | Non-wood plant papermaking black liquor recycling treatment system and treatment process |
| CN113896360A (en) * | 2021-09-26 | 2022-01-07 | 四川雅华生物有限公司 | Method and system for separating and recovering alkali and hemicellulose from wastewater stock solution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018213A (en) * | 2018-10-10 | 2020-04-17 | 上海凯鑫分离技术股份有限公司 | Non-wood plant papermaking black liquor recycling treatment system and treatment process |
| CN113896360A (en) * | 2021-09-26 | 2022-01-07 | 四川雅华生物有限公司 | Method and system for separating and recovering alkali and hemicellulose from wastewater stock solution |
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