CN2285314Y - High cut mixing and bleaching test device for intermediate concentration paper pulp - Google Patents
High cut mixing and bleaching test device for intermediate concentration paper pulp Download PDFInfo
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- CN2285314Y CN2285314Y CN 96251105 CN96251105U CN2285314Y CN 2285314 Y CN2285314 Y CN 2285314Y CN 96251105 CN96251105 CN 96251105 CN 96251105 U CN96251105 U CN 96251105U CN 2285314 Y CN2285314 Y CN 2285314Y
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- mixing
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- paper pulp
- bleaching
- test device
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Abstract
The utility model relates to a high shearing, mixing and bleaching test device for intermediate concentration pulp. The utility model is characterized in that a rotor which is composed of three upright shearing vanes 11, the cross sections of which form a diamond shape and a connecting rod among three upright shearing vanes 11 and is asymmetrically arranged in a mixing and bleaching kettle 2 which is composed of a container wall 13 with a heat insulation layer, a shaft is sheathed in a mechanical seal chamber 4 and a chassis 15 of a mixing rotor, which is driven by the shaft. The diameter of the rotor is d< a >=(0.6-0.7), and the inner diameter of a mixing chamber is D< T >. The structure of the mixing rotor of the device can generate high shearing stress, and mixing is finished in a moment. The best mixing effect is reached, more than a half energy consumption can be saved, and the utility model is closer to production actuality. Experiment process can simulate the process of production technology, and the utility model has more guiding significance for the production.
Description
The utility model relates to the association with pulp bleaching technology of pulp and paper industry, specifically, is a kind of wooden class and careless class middle concentration paper pulp and the mixing and the bleaching test device of bleaching agent and other medicaments.
At present, core component is a conventional whisk in paper pulp mixing that China adopts and the bleaching test device, and therefore, prior art exists following point:
(1), thereby is difficult to reach the optimum efficiency of mixing because conventional whisk does not produce shearing force.
(2) because existing experimental rig rotating speed is lower than 1000 rev/mins, and non-adjustable, paper pulp does not reach the degree of " fluidisation ", and paper pulp and bleaching agent and other medicaments can not reach fully uniformly and mix, and therefore, pulp density also can not improve.
(3) because the existence of the problems referred to above, make pulp brightness that this experimental rig obtains and all result of the test such as degree all do not reach optimum state.
The purpose of this utility model is to overcome the deficiencies in the prior art part, carry out the key issue of oxygen bleaching and hydrogen peroxide bleaching new technology at middle concentration paper pulp, design the experimental rig of the complete mixed uniformly asymmetric of a kind of energy, high shear mixing and bleaching.
The purpose of this utility model is achieved in that
A kind of middle concentration paper pulp high shear mixing and bleaching test device, it is characterized in that, by the wall 13 of band heat-insulation layer, be sleeved on the axle 5 in the mechanical seal chamber 4 and mixed bleach still 2 that the mixed rotor chassis 15 that driven by its constitutes in, asymmetry is equipped with a rotor of being made up of three upright cross sections shearing blade 11 that is rhombus and the connecting rod between them 10, its root diameter D
a=(0.6-0.7) mixing chamber inside diameter D
TThe cross section of shearing blade 11 is a rhombus, and its acute angle is 45 °-60 °, and minor face length is half of the long length of side.When the mixing chamber inside diameter D
TDuring for 180-250mm, rotor center and mixed bleach still center optimum distance apart are 15-25mm.
The utility model compared with prior art has following advantage:
1. the mixed rotor of the utility model design has unique physical dimension, and adopt asymmetry to install, compare with the stirring vane of the prior art under the same rotating speed, can produce bigger shear stress, shearing force can be finished mixing in moment, realize the turbulence admixture, reach best mixed effect.
2. the rotating speed of mixed rotor can be adjustable in 10-3000 rev/min of scope, thereby can make middle concentration paper pulp and bleaching agent and other medicaments be issued to " fluidisation " state in high shear forces, and mix fully evenly, by pulp brightness that this experimental rig obtained and all test such as degree reach optimum efficiency.
3. this device provides the bleaching process process of simulation production, realizes the operation cycle of dynamically mixing, stable state insulation, makes test more approach to produce reality, and the test data that obtains more has directive significance to producing.
Since adopt dynamically mix, the stable state insulation, and the dynamic incorporation time high shear under only needs several seconds, stable state insulation rotating speed is very low, even can be zero, so power consumption is very little.Existing experimental rig is in the whole mixed bleach cycle (1-2 hour), and rotating speed is under nearly 500-1000 rev/min the condition and operates, and compares with it, and the utility model can save energy consumption over half.
5. be provided with swing support, be convenient to the paper pulp that bleaching is good and take out.
6. the utility model is simple in structure, compact to design and easy to operate, and its cost is lower, is easy to apply.
Fig. 1 is middle concentration paper pulp high shear mixing and bleaching test apparatus structure schematic diagram;
Fig. 2 is a mixed bleach still structural representation;
Fig. 3 is the vertical view of mixed bleach still structural representation.
By following embodiment and accompanying drawing thereof, the utility model is further described:
Mixing as shown in Figure 1 and bleaching test device, it constitutes, and the mixed bleach still 2 of band gland 1 links to each other with mechanical seal chamber 4 by adpting flange 3; And adpting flange 7, axle 5 and coupled adpting flange 8 by linking to each other with mechanical seal chamber 4, mixed bleach still 2 is linked to each other with motor 6.Motor 6 is provided with the support 9 that can make experimental rig do swing.The wall of mixed bleach still 2 is provided with steam and imports and exports c, d, and its top is provided with thermometer and inserts mouthful a and medicament input port b.Be provided with condensation-water drain e in mechanical seal chamber 4.
Shown in Fig. 2,3, mixed bleach still 2 by the wall 13 of band heat-insulation layer, make the axle 5 that is sleeved in the mechanical seal chamber 4 drive the joint 12 on mixed rotor chassis 15 and the rotor of being made up of by the shearing blade 11 and the connecting rod between them 10 of rhombus three upright cross sections that asymmetry is installed is constituted.14 be the still of mixed bleach still 2 at the bottom of.The rotor revolution range is decided by diameter and eccentric degree, when mixed bleach still inside diameter D
TDuring for 180mm, root diameter D
aBe 117mm, i.e. root diameter D
a=0.65 mixed bleach still inside diameter D
TRotor center and mixed bleach still center be at a distance of 20mm, forms asymmetricly, and the rhombus acute angle of the cross section of shearing blade 11 is 60 °.The great circle that dotted line among Fig. 3 is represented is the revolution range of rotor, and the little diameter of a circle that dotted line is represented is the diameter of movement of rotor.
Middle concentration paper pulp high shear mixing and bleaching test device, be applicable to the test of normal pressure to 0.1MPa pressure, its method of operating is: the gland 1 of at first opening mixed bleach still 2, install gland 1 on request after installing paper pulp, deployed bleaching agent and other medicaments are added mixed bleach still 2 by medicament input port b; Feed steam by steam inlet d to the heat-insulation layer of mixed bleach still 2 again, and open condensation-water drain e; Restart motor 6, by the Frequency Converter Control motor speed, remain on about 50 rev/mins, the paper pulp temperature is risen gradually, when the paper pulp temperature in the thermometer that is contained in thermometer input port a shows mixed bleach still 2 reaches technological requirement, control motor speed and reach about 2000 rev/mins, promptly during 2000 rev/mins of left and right sides of the turn up of mixed rotor, dynamically mix, keep 5-10 second, motor speed is adjusted back to 50 rev/mins again then, carry out the stable state insulation, its time is by satisfying the fixed bleaching time requirement of technology, last disable motor cuts off vapour source, rotates testing machine up to horizontal level, take out the paper pulp after the bleaching, and the water valve of opening Butterworth Hatch cleans.When Kappa number is 26.7, viscosity is 928cm
3/ g, whiteness reaches 39.5% (ZSO), has promptly improved 13%, viscosity reduces by 9.4%, it is about 49.8% to remove the lignin rate, the paper pulp color even reaches best mixed bleach effect, and power consumption only be former equal conditions test 55%.
Claims (3)
1. middle concentration paper pulp high shear mixing and bleaching test device, it is characterized in that, by the wall (13) of band heat-insulation layer, be sleeved on the axle (5) in the mechanical seal chamber (4) and the mixed rotor chassis that drives by its (in the 15 mixed bleach stills (2) that constitute, asymmetry is equipped with a rotor of being made up of three upright cross sections shearing blade (11) that is rhombus and the connecting rod between them (10), its root diameter D
a=(0.6-0.7 mixing chamber inside diameter D
T
2. middle concentration paper pulp high shear mixing according to claim 1 and bleaching test device is characterized in that, the cross section of shearing blade (11) is a rhombus, and its acute angle is 45 °-60 °, and minor face length is half of the long length of side.
3. according to claim 1,2 described middle concentration paper pulp high shear mixing and bleaching test devices, it is characterized in that, when the mixing chamber inside diameter D
TDuring for 180-250mm, rotor center and mixed bleach still center optimum distance apart are 15-25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96251105 CN2285314Y (en) | 1996-12-31 | 1996-12-31 | High cut mixing and bleaching test device for intermediate concentration paper pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96251105 CN2285314Y (en) | 1996-12-31 | 1996-12-31 | High cut mixing and bleaching test device for intermediate concentration paper pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2285314Y true CN2285314Y (en) | 1998-07-01 |
Family
ID=33921678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96251105 Expired - Fee Related CN2285314Y (en) | 1996-12-31 | 1996-12-31 | High cut mixing and bleaching test device for intermediate concentration paper pulp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2285314Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757955A (en) * | 2014-01-06 | 2014-04-30 | 南京林业大学 | Novel alkaline peroxide mechanical pulp technology improving method for improving pulp strength |
| CN108801808A (en) * | 2018-07-05 | 2018-11-13 | 广西大学 | A kind of anti-shear concrete Strength Testing Methods |
-
1996
- 1996-12-31 CN CN 96251105 patent/CN2285314Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757955A (en) * | 2014-01-06 | 2014-04-30 | 南京林业大学 | Novel alkaline peroxide mechanical pulp technology improving method for improving pulp strength |
| CN103757955B (en) * | 2014-01-06 | 2016-08-24 | 南京林业大学 | A kind of APMP technique of improving improves the new method of pulp strength |
| CN108801808A (en) * | 2018-07-05 | 2018-11-13 | 广西大学 | A kind of anti-shear concrete Strength Testing Methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |