CN209276895U - A kind of oxygen system high-efficiency cleaning bleached pulp test-type device - Google Patents
A kind of oxygen system high-efficiency cleaning bleached pulp test-type device Download PDFInfo
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- CN209276895U CN209276895U CN201821754872.7U CN201821754872U CN209276895U CN 209276895 U CN209276895 U CN 209276895U CN 201821754872 U CN201821754872 U CN 201821754872U CN 209276895 U CN209276895 U CN 209276895U
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Abstract
The utility model discloses a kind of oxygen system high-efficiency cleaning bleached pulp test-type devices；Hollow mixed rotor in device is bolted to positioned at the shaft end of mixing and reaction chamber bottom high-speed induction motor main shaft；The blade of hollow mixed rotor is the symmetrical multiple linear type blades or helical blades of hollow structure.It is widely used in the oxygen bleaching or ozone drift of the chemical pulp of any raw material, all using agent containing oxygen bleaching, the final product that chemical reaction is decomposed is oxygen and water, has prevented the residual of harmful substance in slurry after floating；The bleaching pulp brightness of present apparatus preparation is higher, more uniformly, is not easy brightness reversion；It drives hollow type rotor to carry out mixed at high speed by main shaft and mechanical seal using variable-frequency motor, keeps middle high consistency stock in hybrid reaction room and oxygen system gaseous state drift agent mass transfer highly efficient, be mixed more uniformly abundant；The present apparatus is structurally reasonable, accurately controls the consumption of medical fluid, oxygen, ozone, and it is efficient to prepare bleached pulp simple process.
Description
Technical field
The utility model relates to pulp and paper technology field more particularly to a kind of oxygen system high-efficiency cleaning bleached pulp test-types
Device.
Background technique
Due to the constraint by resource, environment, benefit etc., pulp and paper industry towards high efficiency, high quality, low disappear
Consumption, low pollution, low emission the sustainable development of modernized big insutry direction.In recent years China has put into effect a series of stringent policies and regulations
To realize the sustainable development of pulping and paper-making, enterprise technology upgrading is constantly pushed, energy-saving and emission-reduction are prevented and remedied pollution, and realize cleaning life
It produces, accelerates the extensive use for promoting the technologies such as oxygen delignification, ozone bleaching, ECF element chlorine free bleaching and TCF total chlorine free bleaching.
Oxygen is common oxidant, under alkaline condition, can be with the residual lignin in oxidative degradation paper pulp.Oxygen delignification
(also known as oxygen bleaching) is exactly that the process of the residual lignin in brown stock is removed using oxygen and alkali, this process will not generate organic chloride
The residual lignin in paper pulp can be greatly lowered in object, improve pulp brightness, while at low cost.Ozone is can industrially to apply
Most strong oxidizer, its oxidizing potential is 2.07, oxidability ratio ClO2It is high.The high bleaching efficiency of ozone can significantly subtract
The consumption of drug, the ClO including ECF bleaching are bleached less2, the H of TCF bleaching2O2, nocuousness will not be generated using ozone bleaching
Chlorine-containing compound.The dominant mechanism of ozone bleaching is ozone and lignin reaction, and the destruction of lignin aromatic ring structure is become glutinous health
Acid type structure.At present in the industrial application and Experimental Research of oxygen delignification and ozone bleaching, dense and highly concentrated slurry in main use
Dense, the bleaching process overwhelming majority is medium consistency bleaching techniqueflow at present, and technique is increasingly mature.Medium consistency bleaching technology is compared to low dense
Bleaching technology all has sizable advantage in all respects.But dense pump keeps middle concentration paper pulp real in the realization of bleaching process needs
Existing fluidisation, in addition, the mixed effect of middle concentration paper pulp and oxygen and ozone gaseous bleaching bleaching agent is also to determine technological effect
It is crucial.Good efficient mixing can provide uniform conditions of bleaching, reduces chemicals and energy consumption, reduces the reaction time, improves and produce
Quality.Oxygen system gaseous state floats agent before with fiber contacts, it is necessary to pass through a gas-liquid mass transfer process, be first dissolved in fiber table
In the water of layer, then by the effect of medium-consistency pulp mixer, quickly handed over fiber finer cell and the water for being adsorbed in cell wall
It changes, and is dissolved in the water exchanged, repetitive cycling, until the oxygen system gaseous state drift agent encirclement that fiber is dissolved in completely in water is
Only.The size of oxygen system drift agent bubble directly influences diffusion rate, and bubble is smaller, is more conducive to spread, and is conducive to mix.But it wants
It realizes smaller size of bubble, depends mainly on the less turbulence of gas, liquid, solid three-phase, to also depend on medium-consistency pulp mixer institute
The shearing force of generation.
Patent CN206562539U discloses a kind of experimental provision of middle low-consistency stock ozone bleaching, and the device is at tank body bottom
An air inlet pipe and aeration head is arranged in portion, can theoretically realize ozone bottom inflow, is formed in the slurry through aeration head a large amount of stingy
Bubble increases the contact area of ozone and fiber, under the drive of agitating paddle, slurry and ozone fast reaction.But only rely on exposure
Gas capitiform at bubble size it is still larger, in whipping process, the gravity as suffered by slurry and centrifugal force, special pulp density
When slightly higher, it is easy to blocking aeration head, influences air inlet；In addition air inlet pipe and bottom setting aeration is separately provided in side in tank body
Head is particularly easy to form the dead angle of mixing, and slurry easily blocks and the gap of air inlet pipe and tank body, air inlet pipe and aeration in another stirring
Head has the danger of winding agitating paddle；It is set on motor, the vertical lid of agitating shaft simultaneously gos deep into tank interior, and agitating paddle is fixed on agitating shaft
Bottom end, this structure agitating shaft is longer, and agitating paddle is rectangular sheet, the practical stirring operation area very little of agitating paddle, in embodiment,
Slurry concentration is low dense 3%~5%, is relatively suitable for low density bleaching, if middle high consistency pulp, stirring action is extremely limited；
The sealing in the rotation gap between agitating shaft and lid is not introduced.
Rapidly and efficiently mixing is to realize the key factor of the middle and high dense bleaching of ozone, the ozone bleaching reason carried out due to the country
By research, the overwhelming majority is concentrated in process conditions, includes ozone in terms of practical application and quickly the mixing of middle high consistency pulp, height
The pilot test device of validity response, engineering equipment preparation, be related to it is less, it is domestic at present only seldom using ozone carry out in it is high
The production line of dense bleaching, the still not no experimental facilities for high density bleaching in ozone of integrated system, can not pass through the reality of system
It tests and high consistency pulp in ozone is bleached, especially ozone is dense in the mechanism of mass transfer of middle concentration paper pulp, delignification mechanism and ozone
The technological parameter of bleaching is furtherd investigate.Dense ozone bleaching mass transfer is complicated due in, to experimental facilities, ozone concentration pressure and
The experimental conditions such as high-intensitive hybrid technology are more demanding, and the research reported at present is confined to low dense, high concentration ozone bleaching and low more
Speed mixing unevenness in dense ozone bleaching, at present in dense ozone bleaching technology upgrading reference value it is little.Existing oxygen bleaching
With the experimental provision of ozone drift, the overwhelming majority is good airproof performance, but immiscible reaction kettle；Or can in stir at low speed
Mixing, leakproofness is preferable, but is only limitted to the reactor tank of low-consistency stock；Or good airproof performance, it is mixed using rolling or rotating
It closes, but is chiefly used in the reaction kettle of high consistency pulp bleaching.In addition above-mentioned experimental provision, it is difficult at the same accomplish the high turbulent flow of middle concentration paper pulp,
Fluidisation, ozone are passed through, reaction with pressure, mixed at high speed, fast reaction, efficiently bleach, the uniform requirement of experiment of whiteness, in addition adopt
Related Experimental Study is carried out with pump dense in factory's industrial application, ozone medium-consistency pulp mixer, reaction tower, it is with high costs, it is difficult to real
It is existing, therefore, need to develop a kind of device of high consistency pulp in experiment ozone bleaching, the oxygen system for researching and developing a kind of oxygen and ozone is high
The preparation method of high consistency pulp in effect bleaching.
Summary of the invention
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts and deficiency provide a kind of oxygen system high-efficiency cleaning
Bleached pulp test-type device.It solves the prior art and is difficult to meet the needs of oxygen bleaching and ozone bleaching highly effective reaction, and overcome
The shortcomings that supreme whiteness is bleached by oxygen system can not be carried out to middle concentration paper pulp under the conditions of high intensity turbulent.
The utility model is achieved through the following technical solutions:
A kind of oxygen system high-efficiency cleaning bleached pulp test-type device, the mixing with lid 10 including being located in rack 27 are anti-
Answer room 16, high-speed induction motor 24, DCS operating system 26；
Lid 10 is provided with above the mixing and reaction chamber 16,16 outer wall of mixing and reaction chamber installs having heaters 15, mixing
Hollow mixed rotor 13 is provided in reaction chamber 16；
10 central lower of lid is provided with the aeration for being provided with porous array that can be inserted into hollow 13 center of mixed rotor
Pipe 14；The external port of aeration tube 14 is sequentially communicated liquid feed valve 3, spray pump 2, inlet tube 1 and intake valve by three-way interface respectively
6, air pump 5, air inlet pipe 4；
Exhaust valve 11 is provided with above lid 10, exhaust valve 11 is sequentially connected the detection of tail gas ozone concentration by exhaust pipe 12
Instrument 22, ozone exhaust gas treating device 23；
The hollow mixed rotor 13 is connected to by bolt 28 positioned at 16 bottom high-speed induction motor 24 of mixing and reaction chamber
The shaft end of main shaft 19；The blade of the hollow mixed rotor 13 be hollow structure Parallel Symmetric distribution multiple linear type blades or
The symmetrical multiple helical blades of hollow structure.
The both ends of the blade of the hollow mixed rotor 13 are separately fixed on upper and lower two annulus being coaxially distributed, under
Annulus is connected to by bolt 28 positioned at the shaft end of 16 bottom main shaft 19 of mixing and reaction chamber；The aeration tube 14 for being provided with porous array is logical
Cross the inside center that annulus protrudes into hollow mixed rotor 13；When the rotation of hollow mixed rotor 13, position is formed in its center
Vacuum area；Under the disturbance of blade, make the fluid in mixing and reaction chamber 16 between vacuum area, each blade, each blade with
Convection current is formed between hybrid reaction chamber interior walls and between each blade and upper annulus and hybrid reaction chamber interior walls.
The end face of 19 rotation axis of main shaft is vertically set with sealing shroud 18, for sealing main shaft 19 and mixing and reaction chamber
Circumferential clearance between 16；The circumference of the sealing shroud 18 offers the cooling water circulatory flow being connected to external cooling water.
16 bottom of mixing and reaction chamber is provided with a pulp-expelling valve 17, and pulp-expelling valve 17 is connected to slurry storage tank 21 by pipeline.
The high-speed induction motor 24 connects frequency converter 25, and drive end bearing bracket is installed vertically on 27 lower section of rack, and shaft passes through
Shaft coupling 20 is connect with main shaft 19.
Pressure sensor 8 and temperature sensor 9 are provided on the lid 10；DCS operating system 26 can real-time display it is mixed
Close the temperature and pressure of reaction chamber, and the revolving speed of the switch traffic and high-speed induction motor 24 of controllable spray pump 2 and air pump 5.
A kind of preparation method of oxygen delignification paper pulp comprising following steps:
The preparation of oxygen delignification paper pulp:
Dress pot: lid 10 is removed, and installs corresponding hollow mixed rotor 13 according to the dense characteristic selection of the slurry of paper pulp to be floated,
I.e. low dense and medium consistency bleaching selection linear type blade hollow mixed rotor 13, high density bleaching select the hollow mixed of helical blades
Close rotor 13；Over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the center of hollow mixed rotor 13, utilizes
Bolt of cover 7 is by 16 fit sealing of lid 10 and mixing and reaction chamber；
It is dense to adjust slurry: opening spray pump 2, the dilution water being pumped by inlet tube 1 and aeration tube 14 opens frequency converter 25,
Setpoint frequency, use revolving speed for 800~1500r/min mixing thicken, adjust mixing and reaction chamber 16 in slurry to be floated be in it is dense
10%~14% or highly concentrated 25%~30%；
Oxygenation pretreatment: medium consistency bleaching opens spray pump 2, by inlet tube 1 and aeration tube 14, be pumped into dosage be 2.0%~
3.0% NaOH, 0.4%~0.6% MgSO4, 0.4%~0.6% H2O2；Or high density bleaching, being pumped into dosage is 2.0%
~6.0% NaOH, 0.3%~0.6% MgSO4；Frequency converter 25 is opened, is mixed using 800~1500r/min of revolving speed equal
It is even；
Oxygen bleaching: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to 90 DEG C, carries out constant temperature mode, opens gas
Pump 5, the oxygen being pumped into open frequency converter 25 until pressure in mixing and reaction chamber 16 is 0.5~0.7MPa, using revolving speed 800~
1500r/min carries out the reaction of mixing oxygen delignification, and the medium consistency bleaching reaction time is 60min, and the high density bleaching reaction time is
30min；
Discharging: to the end of the reaction time, air pump 5 is closed, stops oxygen air inlet, closes heater 15, closes frequency converter 25
With high-speed induction motor 24, exhaust valve 11 is opened, is deflated, pressure is zero in reaction chamber 16 to be mixed, opens spray pump 2 and pumps
Enter dilution water, carry out pulp washing discharging, open pulp-expelling valve 17, slurry storage tank 21 collects slurry after drift.
A kind of preparation method of ozone bleaching paper pulp comprising following steps:
The preparation of ozone bleaching paper pulp:
Dress pot: lid 10 is removed, and installs corresponding hollow mixed rotor 13 according to the dense characteristic selection of the slurry of paper pulp to be floated,
I.e. low dense and medium consistency bleaching selection linear type blade hollow mixed rotor 13, high density bleaching select the hollow mixed of helical blades
Close rotor 13；Over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the center of hollow mixed rotor 13, utilizes
Bolt of cover 7 is by 16 fit sealing of lid 10 and mixing and reaction chamber；
It is dense to adjust slurry: opening spray pump 2, dilution water is pumped by inlet tube 1 and aeration tube 14, frequency converter 25 is opened, adopts
With 800~1500r/min of revolving speed mixing thicken, adjust reaction chamber in slurry to be floated be in dense 10%~14% or highly concentrated 30%~
35%；
Low-kappa number: opening spray pump 2, by inlet tube 1 and aeration tube 14, is pumped into acid solution, opens frequency converter 25, uses
800~1500r/min of revolving speed is uniformly mixed, and adjusting slurry pH is 2；Heater 15 makes slurry liter in mixing and reaction chamber 16
Temperature arrives 40 DEG C of corresponding temperature, carries out constant temperature mode, opens frequency converter 25, using 800~1500r/min of middle and slow speed of revolution, constantly
It is mixed, the low-kappa number time is 30min；
Protective agent pretreatment: opening spray pump 2, by inlet tube 1 and aeration tube 14, be pumped into ethylene glycol, ethyl alcohol, methanol or
The organic solvents such as dioxane open frequency converter 25, using 800~1500r/min of revolving speed, are uniformly mixed；
Ozone bleaching: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to required temperature, carries out constant temperature mould
Formula, or heater 15 is closed, carry out conventional room temperature ozone bleaching；10 top exhaust valve 11 of lid is kept it turned on, and opens gas
Pump 5 is pumped into ozone, and concentration 180mg/L, flow 4L/min, admission pressure is 0.2~0.4MPa, while opening frequency converter
25, high 1500~3000r/min of revolving speed in carry out the reaction of mixing ozone bleaching, and ozone is passed through is with incorporation time
5min after hybrid reaction, closes air pump 5, closes intake valve 6, closes frequency converter 25, and unreacted ozone passes through exhaust valve
11, tail gas ozone concentration detector 22, ozone exhaust gas treating device 23；Or exhaust valve 11 is closed, air pump 5 is opened, ozone is pumped into,
Concentration is 180mg/L, and flow 4L/min, admission pressure is 0.2~0.4MPa, until chamber pressure is 0.8~1.2MPa, is closed
Ozone air pump 5 is closed, while opening frequency converter 25, high 1500~3000r/min of revolving speed in carries out the anti-of mixing ozone bleaching
It answers, mixed reaction time 5min, after hybrid reaction, closes frequency converter 25, open exhaust valve 11, unreacted ozone is logical
Tail gas ozone concentration detector 22, ozone exhaust gas treating device 23 are crossed, zero is reduced to chamber pressure, is pumped into nitrogen, will be mixed
Unreacted ozone in reaction chamber 16 is closed to displace；
Discharging: opening spray pump 2 and be pumped into dilution water, carry out pulp washing discharging, pulp-expelling valve 17 is opened, after slurry storage tank 21 collects drift
Slurry.
A kind of preparation method of the ozone bleaching paper pulp of oxygen pressurization comprising following steps:
The preparation of the ozone bleaching paper pulp of oxygen pressurization:
Dress pot: lid 10 is removed, and installs corresponding hollow mixed rotor 13 according to the dense characteristic selection of the slurry of paper pulp to be floated,
The hollow mixed rotor 13 of low dense and medium consistency bleaching selection linear type blade, high density bleaching select the hollow mixing of helical blades
Rotor 13；Over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the center of hollow mixed rotor 13, utilizes end
Bonnet bolt 7 is by 16 fit sealing of lid 10 and mixing and reaction chamber；
It is dense to adjust slurry: opening spray pump 2, by inlet tube 1 and aeration tube 14, is pumped into dilution water, opens frequency converter 25, adopt
With 800~1500r/min of middle and slow speed of revolution, mixing is thickened, adjust mixing and reaction chamber 16 in slurry to be floated be in dense 10%~14%
Or highly concentrated 30%~35%；
Low-kappa number: opening spray pump 2, by inlet tube 1 and aeration tube 14, is pumped into acid solution, opens frequency converter 25, uses
800~1500r/min of middle and slow speed of revolution is uniformly mixed, and adjusting slurry pH is 2；Heater 15 makes 16 entoplasm of mixing and reaction chamber
Material is warming up to 40 DEG C, carries out constant temperature mode, opens frequency converter 25, and using 800~1500r/min of middle and slow speed of revolution, constantly mixing is stirred
It mixes, the low-kappa number time is 30min；
Protective agent pretreatment: opening spray pump 2, by inlet tube 1 and aeration tube 14, be pumped into ethylene glycol, ethyl alcohol, methanol or
The organic solvents such as dioxane open frequency converter 25, using middle and slow speed of revolution 800-1500r/min, are uniformly mixed；
The ozone bleaching of oxygen pressurization: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to required temperature,
Constant temperature mode is carried out, or closes heater 15, carries out conventional room temperature ozone bleaching；Exhaust valve 11 is closed, unlatching air pump 5 is pumped into smelly
Oxygen, concentration 180mg/L, flow 4L/min, admission pressure are 0.2~0.4MPa, until pressure is 0.8 in mixing and reaction chamber 16
~1.2MPa stops ozone air inlet；Air pump 5 is opened again and is pumped into oxygen, until 16 pressure of mixing and reaction chamber is 1.5MPa, closes air pump
5, while frequency converter 25 is opened, high 1500~3000r/min of revolving speed in carries out the reaction of mixing ozone delignification, mixing
Reaction time is 5min, after hybrid reaction, closes frequency converter 25, opens exhaust valve 11, unreacted ozone passes through tail gas
Ozone concentration detector 22, ozone exhaust gas treating device 23 are pumped into nitrogen, will mix when 16 pressure of reaction chamber to be mixed is reduced to zero
Unreacted ozone in reaction chamber 16 is closed to displace；
Discharging: opening spray pump 2 and be pumped into dilution water, carry out pulp washing discharging, pulp-expelling valve 17 is opened, after slurry storage tank 21 collects drift
Slurry.
The utility model compared with the existing technology, have following advantages and effects
The test-type device of the oxygen system high-efficiency cleaning bleached pulp of the utility model passes through main shaft and machine using variable-frequency motor
Tool sealing drives hollow type rotor to carry out mixed at high speed, and the middle underflow material in hybrid reaction room is made to realize the fluidisation of high strong turbulence
State, at this time with oxygen system gaseous state drift agent mass transport process be DIFFUSION IN TURBULENCE, strong shearing and high speed pulse, can accelerate mixing and
Reaction；The hyperbaric oxygen system gaseous state drift agent of hollow mixed rotor hollow position air inlet has certain initial velocity and pressure, pours
When in fluidized middle concentration paper pulp, strong convection action can be generated, accelerates the mass transfer between different mixing velocity regions, makes
The mixing mass transfer of each Mixed Zone reaches unanimity, and keeps bleaching effect more uniformly consistent.
The test-type device of the utility model can realize the high strong turbulence and height with pressure of the middle concentration paper pulp under laboratory condition
Effect mixing, mass transport process is mainly DIFFUSION IN TURBULENCE and Convention diffusion, compared to the static state or mixed on low speed of existing apparatus and technology
Mainly molecule is spread, and mass-transfer efficiency is clearly.In addition, due in middle high consistency stock, the intracavitary water of fibrocyte and absorption
In the water of cell wall, hampers gaseous state drift agent and contacted with the direct of fiber, it is necessary to by high-intensitive shear action and institute
The strong velocity fluctuation in the part of generation, to weaken the inhibition of this part water, so the test-type device of the utility model
The inhibition that water floats agent to gaseous state can be reduced by high strong turbulence and mixed at high speed.
Compared with prior art, for the utility model in such a way that ozone medium-consistency pulp mixer and reactor combine, structure is tight
It gathers, design is reasonable；Using provided with motor at lower, band cooling water flow conduits mechanical seal set has been used, has taken away high speed rotation generation
Heat, while while realize under laboratory condition high speed rotation and mix, the drift agent of oxygen system gaseous state is passed through sealing, solves corruption
The problem of extremely strong ozone of corrosion easily causes rubber sealing material ageing failure, leads to leakage blowdown.
For the characteristic of the different dense slurries to be floated of slurry, design uses replaceable different type and mixes to be turned the utility model
Son.Enough shear stresses are applied to middle concentration paper pulp, network of fibers can be made to disperse, middle concentration paper pulp is made to be in the shape of complete turbulent flow
State, design have used hollow linear type rotor, and paper pulp and gaseous state can be made to float agent and carry out strong turbulence, Convention diffusion and molecule expansion
It dissipates；To a small amount of free water is only existed, the apparent high consistency pulp of viscoelasticity, design has used hollow spiral rotor, using discongesting
The method combined with high shear, helical blades make high consistency pulp be easy to evacuate and have more surface areas, float gaseous state
Agent comes into full contact with fiber, and mixed at high speed can generate high shear forces to slurry, promotes highly effective reaction.In addition existing apparatus is compared
With technology, since high-speed rotating centrifugal force acts on, the center of hollow mixed rotor easily forms vacuum area, can make gaseous state
Drift agent is easier to be passed through, and the effect of centrifugal force also makes slurry far from the center of rotor, and aeration tube will not block.
Utility model device adjust slurry it is dense simple and convenient, be widely portable in dense, high consistency pulp bleaching, can also answer
For the Experimental Research of low-consistency stock bleaching, but in industrial application, since concentration is low, there are water consumes greatly, energy consumption is high, pollution weight
The problems such as, the utility model is not further elaborated.Utility model device is structurally reasonable, easy to use, high degree of automation,
Medical fluid and oxygen, ozone consumption are accurately controlled, it is efficient to prepare bleached pulp simple process.
The oxygen system high-efficiency cleaning bleached pulp preparation method of the utility model is widely used in the chemical pulp of any raw material
Oxygen bleaching or ozone drift, all using agent containing oxygen bleaching, the final product that chemical reaction is decomposed is oxygen and water, is starched after having prevented drift
The residual of middle harmful substance；The bleaching pulp brightness of the utility model preparation is higher, more uniformly consistent, is not easy brightness reversion.
The oxygen system high-efficiency cleaning bleached pulp preparation method of the utility model uses oxygen delignification (also known as oxygen bleaching) for peroxide
Change the oxygen delignification that hydrogen is strengthened, in conjunction with the advantages of alkali oxygen bleaching and hydrogen peroxide bleaching, oxygen removes lignin, makes lignin fragments
Change, keeps lignin degradation water-soluble and the fragment of alkali soluble, and hydrogen peroxide both can be reduced and eliminated the chromophoric group of lignin, it also can be broken
Solution lignin makes its dissolution, hence it is evident that improves the effect of bleaching.In addition oxygen delignification higher oxygen press and higher temperature, delignification rate compared with
MgSO is added in height4It is can effectively protect the degradation of carbohydrate in paper pulp, the selectivity of oxygen delignification is improved, makes oxygen delignification
Paper pulp viscosity and intensity be improved significantly.
The oxygen system high-efficiency cleaning bleached pulp preparation method of the utility model is pressurized smelly using ozone bleaching and oxygen
The destruction of lignin aromatic ring structure is become glutinous health acid type structure, higher delignification using the strong oxidizing property of ozone by oxygen bleaching
Rate can be such that pulp brightness is substantially improved.The ozone bleaching of oxygen pressurization, the advantages of drift in combination with oxygen bleaching and ozone, in higher oxygen
Pressure can increase the solubility of oxygen and ozone and strengthen mass transfer, hence it is evident that improves the delignification rate of paper pulp.Pass through low-kappa number
With addition protective agent, the transition metal ions in slurry can be effectively removed, and reduces the degradation of carbohydrate, increases ozone
Stability and dissolubility improve the delignification selectivity of ozone.
The oxygen system high-efficiency cleaning bleached pulp preparation method of the utility model can significantly improve the subsequent bleachability of paper pulp
With the stability of high whiteness, the chemicals with alternate subsequent drift section nocuousness and higher cost can be greatly reduced, such as chlorine dioxide and
Hydrogen peroxide, and then mitigate the pollutional load of bleach paragraph, have the advantages that cleaning is friendly, bleaching expense is low, pulp quality is excellent etc..
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the hollow mixed rotor structural schematic diagram of linear type twayblade.
Fig. 3 is the hollow mixed rotor structural side view of linear type twayblade.
Fig. 4 is in Fig. 3 along A-A schematic cross-sectional view.
Fig. 5 is the hollow mixed rotor structural schematic diagram of three blade of linear type.
Fig. 6 is the hollow mixed rotor structural side view of three blade of linear type.
Fig. 7 is in Fig. 6 along A-A schematic cross-sectional view.
Fig. 8 is the hollow mixed rotor structural schematic diagram of helical blades.
Fig. 9 is the hollow mixed rotor structural side view of helical blades.
Figure 10 is in Fig. 9 along A-A schematic cross-sectional view.
Specific embodiment
The utility model is more specifically described in detail combined with specific embodiments below.
Embodiment
As Figure 1-10 shows.The utility model discloses a kind of oxygen system high-efficiency cleaning bleached pulp test-type devices, including
The mixing and reaction chamber 16 with lid 10 in rack 27, high-speed induction motor 24, DCS operating system 26；
Lid 10 is provided with above the mixing and reaction chamber 16,16 outer wall of mixing and reaction chamber installs having heaters 15, mixing
Hollow mixed rotor 13 is provided in reaction chamber 16；
10 central lower of lid is provided with the aeration for being provided with porous array that can be inserted into hollow 13 center of mixed rotor
Pipe 14；The external port of aeration tube 14 is sequentially communicated liquid feed valve 3, spray pump 2, inlet tube 1 and intake valve by three-way interface respectively
6, air pump 5, air inlet pipe 4；
1 material of inlet tube is two phase stainless steel, and spray pump 2 is two phase stainless steel magnetic drive pump.
4 material of air inlet pipe is polytetrafluoroethylene (PTFE), and air pump 5 is special ozone compressor, and pressurization is corrosion-resistant, can meet defeated
Send the requirement of oxygen and ozone.
The lid 10 is detachable, and material is the organic glass of high-transparency and high-strength.
Heater 15 is coated on the outer wall of mixing and reaction chamber 16, can have temperature regulating device, and heater is corrosion resistant nickel network
Alloy wire, electric heating plate surface are handled through anticorrosive PTFE erosion.
The tail gas ozone concentration detector 22 is on-line detector, and detection range is 0~200g/m3, using integration
Shunting layer light pool structure has the output of RS-485 signal.
19 material of (rotation) main shaft is No. 45 steel.
Exhaust valve 11 is provided with above lid 10, exhaust valve 11 is sequentially connected the detection of tail gas ozone concentration by exhaust pipe 12
Instrument 22, ozone exhaust gas treating device 23；
The hollow mixed rotor 13 is connected to by bolt 28 positioned at 16 bottom high-speed induction motor 24 of mixing and reaction chamber
The shaft end of main shaft 19；The blade of the hollow mixed rotor 13 is multiple linear type blades of hollow structure Parallel Symmetric distribution
The symmetrical multiple helical blades (2-3 piece) of (2-3 piece) or hollow structure.
The both ends of the blade of the hollow mixed rotor 13 are separately fixed on upper and lower two annulus being coaxially distributed, under
Annulus is connected to by bolt 28 positioned at the shaft end of 16 bottom main shaft 19 of mixing and reaction chamber；The aeration tube 14 for being provided with porous array is logical
Cross the inside center that annulus protrudes into hollow mixed rotor 13；When the rotation of hollow mixed rotor 13, position is formed in its center
Vacuum area；Under the disturbance of blade, make the fluid in mixing and reaction chamber 16 between vacuum area, each blade, each blade with
Convection current is formed between hybrid reaction chamber interior walls and between each blade and upper annulus and hybrid reaction chamber interior walls.
The end face of 19 rotation axis of main shaft is vertically set with sealing shroud 18, for sealing main shaft 19 and mixing and reaction chamber
Circumferential clearance between 16；The circumference of the sealing shroud 18 offers the cooling water circulatory flow being connected to external cooling water, with
Rub the heat of generation therewith when cooling main shaft high speed rotation.
16 bottom of mixing and reaction chamber is provided with a pulp-expelling valve 17, and pulp-expelling valve 17 is connected to slurry storage tank 21 by pipeline.
The high-speed induction motor 24 connects frequency converter 25, and drive end bearing bracket is installed vertically on 27 lower section of rack, and shaft passes through
Shaft coupling 20 is connect with main shaft 19.
Pressure sensor 8 and temperature sensor 9 are provided on the lid 10；DCS operating system 26 can real-time display it is mixed
Close the temperature and pressure of reaction chamber, and the revolving speed of the switch traffic and high-speed induction motor 24 of controllable spray pump 2 and air pump 5.
The method that the utility model test-type device prepares oxygen system high-efficiency cleaning bleached pulp is as follows:
Embodiment 1
The preparation of oxygen delignification paper pulp:
(1) it fills pot: lid 10 is removed, corresponding hollow mixed rotor is installed according to the dense characteristic selection of the slurry of paper pulp to be floated
13；The hollow mixed rotor 13 of low dense and medium consistency bleaching selection linear type blade, high density bleaching select the hollow of helical blades
Mixed rotor 13；Appropriate over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the centre bit of hollow mixed rotor 13
It sets, using bolt of cover 7 by 16 fit sealing of lid 10 and mixing and reaction chamber.
(2) it is dense to adjust slurry: opening spray pump 2 and is pumped into the dilution water of respective volume by inlet tube 1 and aeration tube 14, opens
Open frequency converter 25, using 800~1500r/min of middle and slow speed of revolution, mixing is thickened, adjust reaction chamber in slurry to be floated be in dense 10%
Or highly concentrated 25%.
(3) oxygenation pretreatment: medium consistency bleaching: spray pump 2 is opened, by inlet tube 1 and aeration tube 14, being pumped into dosage is
2.0% NaOH, 0.4% MgSO4, 0.4% H2O2；Or high density bleaching, it is pumped into the NaOH that dosage is 2.0%, 0.3%
MgSO4；Frequency converter 25 is opened, using slow-speed of revolution 800r/min, is uniformly mixed.
(4) oxygen bleaching: heater 15 makes slurry in reaction chamber be warming up to 90 DEG C, carries out constant temperature mode, opens air pump 5,
It is pumped into the oxygen of respective volume, until chamber pressure is 0.5MPa, opens frequency converter 25, using slow-speed of revolution 800r/min, is carried out
The reaction of oxygen delignification is mixed, the medium consistency bleaching reaction time is 60min, and the high density bleaching reaction time is 30min.
(5) discharging: to the end of the reaction time, air pump 5 is closed, stops oxygen air inlet, closes heater 15, closes frequency converter
25 and motor 24, exhaust valve 11 is opened, deflates, is zero to chamber pressure, spray pump 2 is opened and is pumped into dilution water, carry out
Pulp washing discharging, opens pulp-expelling valve 17, and slurry storage tank 21 collects slurry after drift.
The preparation of ozone bleaching paper pulp:
(1) it fills pot: lid 10 is removed, corresponding mixed rotor 13 is installed according to the dense characteristic selection of the slurry of paper pulp to be floated,
The hollow mixed rotor 13 of low dense and medium consistency bleaching selection linear type blade, high density bleaching select the hollow mixing of helical blades
Rotor 13；Appropriate over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the center of hollow mixed rotor 13, benefit
With bolt of cover 7 by 16 fit sealing of lid 10 and mixing and reaction chamber.
(2) it is dense to adjust slurry: opening spray pump 2 and is pumped into the dilution water of respective volume by inlet tube 1 and aeration tube 14, opens
Open frequency converter 25, using slow-speed of revolution 800r/min, mixing is thickened, adjust mixing and reaction chamber 16 in slurry to be floated be in dense 10% or
Highly concentrated 30%.
(3) spray pump 2 is opened, by inlet tube 1 and aeration tube 14, suitable acid solution is pumped into, opens frequency converter 25, use
Middle and slow speed of revolution 800 is uniformly mixed, and adjusting slurry pH is 2.Heater is warming up to slurry in mixing and reaction chamber 16 accordingly
40 DEG C of temperature, carry out constant temperature mode, open frequency converter 25, using slow-speed of revolution 800r/min, be constantly mixed, low-kappa number
Time is 30min.
(4) protective agent pre-processes: opening spray pump 2 by inlet tube 1 and aeration tube 14 and is pumped into suitable ethylene glycol, second
The organic solvents such as alcohol, methanol or dioxane open frequency converter 25, using slow-speed of revolution 800r/min, are uniformly mixed.
(5) ozone bleaching: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to required temperature, carries out permanent
Warm mode, or heater 15 is closed, carry out conventional room temperature ozone bleaching.10 top exhaust valve 11 of lid is kept it turned on, and is opened
Air pump 5 is opened, the ozone of respective volume, concentration 180mg/L, flow 4L/min are pumped into, admission pressure 0.2MPa is opened simultaneously
Frequency converter 25 is opened, the revolving speed 1500r/min in carries out the reaction of mixing ozone delignification, and ozone is passed through is with incorporation time
5min after hybrid reaction, closes air pump 5, intake valve 6, closes frequency converter 25, unreacted ozone by exhaust valve 11,
Tail gas ozone concentration detector 22, ozone exhaust gas treating device 23；Or exhaust valve 11 is closed, air pump 5 is opened, respective volume is pumped into
Ozone, concentration 180mg/L, flow 4L/min, admission pressure 0.2MPa, until 16 pressure of mixing and reaction chamber is
0.8MPa closes ozone air pump 5, while opening frequency converter 25, the revolving speed 1500r/min in, carries out mixing ozone delignification
Reaction, mixed reaction time 5min after hybrid reaction, closes frequency converter 25, opens exhaust valve 11, unreacted smelly
Oxygen is reduced to zero, is pumped by tail gas ozone concentration detector 22, ozone exhaust gas treating device 23,16 pressure of reaction chamber to be mixed
Suitable nitrogen displaces unreacted ozone in mixing and reaction chamber 16.
(6) discharging: opening spray pump 2 and be pumped into dilution water, carry out pulp washing discharging, opens pulp-expelling valve 17, and slurry storage tank 21 is collected
Slurry after drift.
The preparation of the ozone bleaching paper pulp of oxygen pressurization:
(1) dress pot removes lid 10, installs corresponding hollow mixed rotor according to the dense characteristic selection of the slurry of paper pulp to be floated
13, the hollow mixed rotor 13 of low dense and medium consistency bleaching selection linear type blade, high density bleaching selects the hollow of helical blades
Mixed rotor 13；Appropriate over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the centre bit of hollow mixed rotor 13
It sets, using bolt of cover 7 by 16 fit sealing of lid 10 and reaction chamber.
(2) it is dense to adjust slurry: opening spray pump 2 and is pumped into the dilution water of respective volume by inlet tube 1 and aeration tube 14, opens
Open frequency converter 25, using slow-speed of revolution 800r/min, mixing is thickened, adjust reaction chamber in slurry to be floated be in dense 10% or highly concentrated
30%.
(3) low-kappa number: opening spray pump 2, by inlet tube 1 and aeration tube 14, is pumped into suitable acid solution, opens frequency conversion
Device 25 is uniformly mixed using slow-speed of revolution 800r/min, and adjusting slurry pH is 2.Heater 15 makes slurry liter in reaction chamber
Temperature arrives 40 DEG C of corresponding temperature, carries out constant temperature mode, opens frequency converter 25, using slow-speed of revolution 800r/min, is constantly mixed,
The low-kappa number time is 30min.
(4) protective agent pre-processes: opening spray pump 2 by inlet tube 1 and aeration tube 14 and is pumped into suitable ethylene glycol, second
The organic solvents such as alcohol, methanol or dioxane open frequency converter 25, using slow-speed of revolution 800r/min, are uniformly mixed.
(5) ozone bleaching of oxygen pressurization: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to required temperature
Degree carries out constant temperature mode, or closes heater 15, carries out conventional room temperature ozone bleaching.Exhaust valve 11 is closed, air pump 5, pump are opened
Enter the ozone of respective volume, concentration 180mg/L, flow 4L/min, admission pressure 0.2MPa, until chamber pressure is
0.8MPa stops ozone air inlet.Air pump 5 is opened again and is pumped into oxygen, until chamber pressure is 1.5MPa, is closed air pump 5, is opened simultaneously
Frequency converter 25 is opened, the revolving speed 1500r/min in carries out the reaction of mixing ozone delignification, and mixed reaction time 5min is mixed
Close after reaction, close frequency converter 25, open exhaust valve 11, unreacted ozone by tail gas ozone concentration detector 22,
Ozone exhaust gas treating device 23,16 pressure of reaction chamber to be mixed are reduced to zero, are pumped into suitable nitrogen, by mixing and reaction chamber 16 not
The ozone of reaction displaces.
(6) discharging: opening spray pump 2 and be pumped into dilution water, carry out pulp washing discharging, opens pulp-expelling valve 17, and slurry storage tank 21 is collected
Slurry after drift.
Embodiment 2
The preparation of oxygen delignification paper pulp:
(1) it fills pot: lid 10 is removed, corresponding mixed rotor 13 is installed according to the dense characteristic selection of the slurry of paper pulp to be floated,
Low dense and medium consistency bleaching selects linear type hollow rotor, and high density bleaching selects screw type hollow rotor；Appropriate over dry slurry is added,
Lid 10 is installed, aeration tube 14 is inserted into the center of rotor 13, using bolt of cover 7 by lid 10 and mixing and reaction chamber 16
Fit sealing.
(2) it is dense to adjust slurry: opening spray pump 2 and is pumped into the dilution water of respective volume by inlet tube 1 and aeration tube 14, opens
Open frequency converter 25, the revolving speed 1500r/min in, mixing thickens, adjust mixing and reaction chamber 16 in slurry to be floated be in dense 14%
Or highly concentrated 30%.
(3) oxygenation pretreatment: medium consistency bleaching: spray pump 2 is opened, by inlet tube 1 and aeration tube 14, being pumped into dosage is
3.0% NaOH, 0.6% MgSO4, 0.6% H2O2；Or high density bleaching, it is pumped into the NaOH that dosage is 6.0%, 0.6%
MgSO4；Frequency converter 25 is opened, the revolving speed 1500r/min in is uniformly mixed.
(4) oxygen bleaching: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to 90 DEG C, carries out constant temperature mode, opens
Air pump 5 is pumped into the oxygen of respective volume, until chamber pressure is 0.7MPa, opens frequency converter 25, the revolving speed 1500r/ in
Min carries out the reaction of mixing oxygen delignification, and the medium consistency bleaching reaction time is 60min, and the high density bleaching reaction time is 30min.
(5) discharging: to the end of the reaction time, air pump 5 is closed, stops oxygen air inlet, closes heater 15, closes frequency converter
25 and motor 24, exhaust valve 11 is opened, is deflated, 16 pressure of reaction chamber to be mixed is zero, opens spray pump 2 and is pumped into dilution
Water carries out pulp washing discharging, opens pulp-expelling valve 17, and slurry storage tank 21 collects slurry after drift.
The preparation of ozone bleaching paper pulp:
(1) it fills pot: lid 10 is removed, corresponding mixed rotor 13 is installed according to the dense characteristic selection of the slurry of paper pulp to be floated,
The hollow mixed rotor 13 of low dense and medium consistency bleaching selection linear type blade, high density bleaching select the hollow mixing of helical blades
Rotor 13；Appropriate over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the center of hollow mixed rotor 13, benefit
With bolt of cover 7 by 16 fit sealing of lid 10 and mixing and reaction chamber.
(2) it is dense to adjust slurry: opening spray pump 2 and is pumped into the dilution water of respective volume by inlet tube 1 and aeration tube 14, opens
Open frequency converter 25, the revolving speed 1500r/min in, mixing thickens, adjust mixing and reaction chamber 16 in slurry to be floated be in dense 14%
Or highly concentrated 35%.
(3) low-kappa number: opening spray pump 2, by inlet tube 1 and aeration tube 14, is pumped into suitable acid solution, opens frequency conversion
Device 25, the revolving speed 1500r/min in are uniformly mixed, and adjusting slurry pH is 2.Heater 15 makes in mixing and reaction chamber 16
Slurry is warming up to 40 DEG C of corresponding temperature, carries out constant temperature mode, opens frequency converter 25, and the revolving speed 1500r/min in is constantly mixed
Stirring is closed, the low-kappa number time is 30min.
(4) protective agent pre-processes: opening spray pump 2 by inlet tube 1 and aeration tube 14 and is pumped into suitable ethylene glycol, second
The organic solvents such as alcohol, methanol or dioxane, open frequency converter 25, and the revolving speed 1500r/min in is uniformly mixed.
(5) ozone bleaching: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to required temperature, carries out permanent
Warm mode, or heater 15 is closed, carry out conventional room temperature ozone bleaching.10 top exhaust valve 11 of lid is kept it turned on, and is opened
Air pump 5 is opened, the ozone of respective volume, concentration 180mg/L, flow 4L/min are pumped into, admission pressure 0.4MPa is opened simultaneously
Frequency converter 25 is opened, using high revolving speed 3000r/min, carries out the reaction of mixing ozone delignification, ozone is passed through is with incorporation time
5min after hybrid reaction, closes air pump 5, intake valve 6, closes frequency converter 25, unreacted ozone by exhaust valve 11,
Tail gas ozone concentration detector 22, ozone exhaust gas treating device 23；Or exhaust valve 11 is closed, air pump 5 is opened, respective volume is pumped into
Ozone, concentration 180mg/L, flow 4L/min, admission pressure 0.4MPa, until 16 pressure of mixing and reaction chamber is
1.2MPa closes ozone air pump 5, while opening frequency converter 25, using high revolving speed 3000r/min, carries out mixing ozone delignification
Reaction, mixed reaction time 5min after hybrid reaction, closes frequency converter 25, opens exhaust valve 11, unreacted smelly
Oxygen is reduced to zero to chamber pressure, is pumped into suitable by tail gas ozone concentration detector 22, ozone exhaust gas treating device 23
Nitrogen displaces ozone unreacted in reaction chamber.
(6) discharging: opening spray pump 2 and be pumped into dilution water, carry out pulp washing discharging, opens pulp-expelling valve 17, and slurry storage tank 21 is collected
Slurry after drift.
The preparation of the ozone bleaching paper pulp of oxygen pressurization:
(1) it fills pot: lid 10 is removed, corresponding mixed rotor 13 is installed according to the dense characteristic selection of the slurry of paper pulp to be floated,
The hollow mixed rotor 13 of low dense and medium consistency bleaching selection linear type blade, high density bleaching select the hollow mixing of helical blades
Rotor 13；Appropriate over dry slurry is added, lid 10 is installed, aeration tube 14 is inserted into the center of empty mixed rotor 13, utilizes
Bolt of cover 7 is by 16 fit sealing of lid 10 and reaction chamber.
(2) it is dense to adjust slurry: opening spray pump 2 and is pumped into the dilution water of respective volume by inlet tube 1 and aeration tube 14, opens
Open frequency converter 25, the revolving speed 1500r/min in, mixing thickens, adjust reaction chamber in slurry to be floated be in dense 14% or highly concentrated
35%.
(3) low-kappa number: opening spray pump 2, by inlet tube 1 and aeration tube 14, is pumped into suitable acid solution, opens frequency conversion
Device 25, the revolving speed 1500r/min in are uniformly mixed, and adjusting slurry pH is 2.Heater 15 makes in mixing and reaction chamber 16
Slurry is warming up to 40 DEG C of corresponding temperature, carries out constant temperature mode, opens frequency converter 25, using middle and slow speed of revolution 1500r/min, constantly
It is mixed, the low-kappa number time is 30min.
(4) protective agent pre-processes: opening spray pump 2 by inlet tube 1 and aeration tube 14 and is pumped into suitable ethylene glycol, second
The organic solvents such as alcohol, methanol or dioxane, open frequency converter 25, and the revolving speed 1500r/min in is uniformly mixed.
(5) ozone bleaching of oxygen pressurization: heater 15 makes slurry in mixing and reaction chamber 16 be warming up to required temperature
Degree carries out constant temperature mode, or closes heater 15, carries out conventional room temperature ozone bleaching.Exhaust valve 11 is closed, air pump 5, pump are opened
Enter the ozone of respective volume, concentration 180mg/L, flow 4L/min, admission pressure 0.4MPa, until mixing and reaction chamber 16 presses
Power is 1.2MPa, stops ozone air inlet.Air pump 5 is opened again and is pumped into oxygen, until 16 pressure of mixing and reaction chamber is 1.5MPa, closes gas
Pump 5, while opening frequency converter 25, using high revolving speed 3000r/min, carries out the reaction of mixing ozone delignification, when hybrid reaction
Between be 5min, after hybrid reaction, close frequency converter 25, open exhaust valve 11, unreacted ozone is dense by tail gas ozone
Detector 22, ozone exhaust gas treating device 23 are spent, zero is reduced to chamber pressure, is pumped into suitable nitrogen, by mixing and reaction chamber
Unreacted ozone displaces in 16.
(6) discharging: opening spray pump 2 and be pumped into dilution water, carry out pulp washing discharging, opens pulp-expelling valve 17, and slurry storage tank 21 is collected
Slurry after drift.
As described above, the utility model can be realized preferably.
The embodiments of the present invention is simultaneously not restricted to the described embodiments, other are any without departing from the utility model
Made changes, modifications, substitutions, combinations, simplifications under spiritual essence and principle, should be equivalent substitute mode, are included in
Within the protection scope of the utility model.
Claims (6)
1. a kind of oxygen system high-efficiency cleaning bleached pulp test-type device, including the mixing with lid (10) being located on rack (27)
Reaction chamber (16), high-speed induction motor (24), DCS operating system (26), it is characterised in that:
It being provided with lid (10) above the mixing and reaction chamber (16), mixing and reaction chamber's (16) outer wall installs having heaters (15),
Hollow mixed rotor (13) are provided in mixing and reaction chamber (16)；
Lid (10) central lower is provided with the aeration for being provided with porous array that can be inserted into hollow mixed rotor (13) center
It manages (14)；The external port of aeration tube (14) is sequentially communicated liquid feed valve (3), spray pump (2), inlet tube by three-way interface respectively
(1) and intake valve (6), air pump (5), air inlet pipe (4)；
It is provided with exhaust valve (11) above lid (10), exhaust valve (11) is sequentially connected tail gas ozone concentration by exhaust pipe (12)
Detector (22), ozone exhaust gas treating device (23)；
The hollow mixed rotor (13) is connected to by bolt (28) positioned at mixing and reaction chamber (16) bottom high-speed induction motor
(24) shaft end of main shaft (19)；The blade of the hollow mixed rotor (13) is multiple straight lines of hollow structure Parallel Symmetric distribution
Type blade or the symmetrical multiple helical blades of hollow structure.
2. oxygen system high-efficiency cleaning bleached pulp test-type device according to claim 1, it is characterised in that: the hollow mixing
The both ends of the blade of rotor (13) are separately fixed on upper and lower two annulus being coaxially distributed, and lower annulus is connected by bolt (28)
It is connected to positioned at the shaft end of mixing and reaction chamber (16) bottom main shaft (19)；The aeration tube (14) for being provided with porous array is stretched by upper annulus
Enter the inside center of hollow mixed rotor (13)；When hollow mixed rotor (13) rotation, position forms vacuum area in its center
Domain；Under the disturbance of blade, make the fluid in mixing and reaction chamber (16) between vacuum area, each blade, each blade with mix
Convection current is formed between reaction chamber wall and between each blade and upper annulus and hybrid reaction chamber interior walls.
3. oxygen system high-efficiency cleaning bleached pulp test-type device according to claim 2, it is characterised in that: the main shaft (19)
The end face of rotation axis is vertically set with sealing shroud (18), for sealing the circumference between main shaft (19) and mixing and reaction chamber (16)
Gap；The circumference of the sealing shroud (18) offers the cooling water circulatory flow being connected to external cooling water.
4. oxygen system high-efficiency cleaning bleached pulp test-type device according to claim 3, it is characterised in that: the hybrid reaction
Room (16) bottom is provided with a pulp-expelling valve (17), and pulp-expelling valve (17) is connected to slurry storage tank (21) by pipeline.
5. oxygen system high-efficiency cleaning bleached pulp test-type device according to claim 4, it is characterised in that: the high speed frequency conversion
Motor (24) connects frequency converter (25), and drive end bearing bracket is installed vertically below rack (27), and shaft passes through shaft coupling (20) and main
Axis (19) connection.
6. oxygen system high-efficiency cleaning bleached pulp test-type device according to claim 4, it is characterised in that: the lid (10)
On be provided with pressure sensor (8) and temperature sensor (9)；DCS operating system (26) can real-time display mixing and reaction chamber temperature
Degree and pressure, and the revolving speed of the switch traffic and high-speed induction motor (24) of controllable spray pump (2) and air pump (5).
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| CN201821754872.7U CN209276895U (en) | 2018-10-26 | 2018-10-26 | A kind of oxygen system high-efficiency cleaning bleached pulp test-type device |
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| CN201821754872.7U CN209276895U (en) | 2018-10-26 | 2018-10-26 | A kind of oxygen system high-efficiency cleaning bleached pulp test-type device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267413A (en) * | 2018-10-26 | 2019-01-25 | 华南理工大学 | A kind of oxygen system high-efficiency cleaning bleached pulp preparation method and its device |
| CN115110328A (en) * | 2022-07-07 | 2022-09-27 | 南京工业大学 | Non-wood paper pulp micro-nano bubble bleaching device and method |
-
2018
- 2018-10-26 CN CN201821754872.7U patent/CN209276895U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267413A (en) * | 2018-10-26 | 2019-01-25 | 华南理工大学 | A kind of oxygen system high-efficiency cleaning bleached pulp preparation method and its device |
| CN109267413B (en) * | 2018-10-26 | 2023-09-26 | 华南理工大学 | Preparation method and device for oxygen-series efficient clean bleached paper pulp |
| CN115110328A (en) * | 2022-07-07 | 2022-09-27 | 南京工业大学 | Non-wood paper pulp micro-nano bubble bleaching device and method |
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