CN103017489A - Method for drying HN-150 by utilizing ribbon vacuum dryer - Google Patents
Method for drying HN-150 by utilizing ribbon vacuum dryer Download PDFInfo
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- CN103017489A CN103017489A CN2012105200058A CN201210520005A CN103017489A CN 103017489 A CN103017489 A CN 103017489A CN 2012105200058 A CN2012105200058 A CN 2012105200058A CN 201210520005 A CN201210520005 A CN 201210520005A CN 103017489 A CN103017489 A CN 103017489A
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Abstract
The invention relates to a method for drying HN-150 by utilizing a ribbon vacuum dryer, which aims to solve the technical problems of more pollution and unstable product quality of the existing HN-150 drying method. According to the method, the ribbon vacuum dryer is adopted for dynamic drying, dust is removed by a bag filter in the drying process, the drying process has the advantages of less pollution and easiness and convenience in operation, and all indexes are superior to those of the original oven drying process after materials are dried. According to the drying method, compared with a yellow inhibitor which is dried by adopting an oven, the average product volatility of the yellow inhibitor which is dried by adopting the ribbon vacuum dryer is lower by 0.14%, and the product quality is better; finally, the color of a dried product is white, no variedness exists, the average volatility is 0.1%, the chroma is less than and equal to 30 hazen, and the quality standard is satisfied; and the average recovery rate of a solvent is as high as 97.3%.
Description
Technical field
The present invention relates to a kind of method of utilizing the dry HN-150 of ribbon vacuum drier.
Background technology
HN-150 claims again the anti-yellow agent of spandex or anti-yellow agent UDT, is mainly used in spandex and polyurethane industry, such as the xanthochromia preventing agent of spandex fibre, synthetic leather, artificial leather etc.In recent years, along with developing rapidly of spandex and polyurethane industry, market increases rapidly the demand of anti-yellow agent UDT.
At present HN-150 carries out Separation of Solid and Liquid by modes such as centrifugal, suction filtrations behind end of synthesis, because water capacity is larger, need to carry out drying to it, and drying means be to adopt vacuum drying oven to carry out the static state drying substantially.This kind drying means mainly contains the shortcoming of three aspects::
One, pollute greatly: still have a large amount of dissolvent residuals in device bottom after dry materials finishes, the Men Jun that at every turn unpacks has a large amount of toxic solvent gaseous volatilizations, can cause the interior air quality of factory building to descend, and after the suction employee's occupational health is consisted of potential potential safety hazard.
Two, volatility is inhomogeneous behind the dry materials, unstable product quality: because existing vacuum drying oven drying is static dry, in dry run, material crushing can't be disperseed, and the temperature field at each position is inhomogeneous in the baking oven, cause after each oven dry the anti-yellow agent volatility in each drip pan inconsistent, and unstable product quality is easily lumpd in anti-yellow agent.
Three, staff labor intensity is large: drip pan quantity is many in the baking oven, and labour intensity was large when the employee carried drip pan again.
Therefore, seek that a kind of to pollute the new drying process that quality index is good behind little, easy and simple to handle, the product drying significant.
Summary of the invention
For the drying means that solves existing HN-150 pollutes technical problem large, unstable product quality, the invention provides a kind of method of utilizing the dry HN-150 of ribbon vacuum drier, adopt the ribbon vacuum drier to carry out in the dynamic drying, and in dry run, carry out dedusting by bag filter, this drying process not only pollutes little, easy and simple to handle, and indices all is better than former oven drying technique behind the dry materials.
Technical solution of the present invention:
A kind of method of utilizing the dry HN-150 of ribbon vacuum drier, its special character is, may further comprise the steps:
1] ribbon vacuum drier; Comprise support 2, be fixed on cylindrical shell 3, closure plate, motor 1 and rotating shaft 7 on the support 2, described rotating shaft 7 is tightly connected with cylindrical shell, described motor 1 is connected with rotating shaft 7 by belt pulley 5, gear 6, also comprise the vacuum feed assembly, described vacuum feed assembly comprises charging aperture, feed pipe 10 and the vacuum material-pumping tube 9 that is arranged on the cylindrical shell 3, described vacuum material-pumping tube 9 one ends are connected with feed pipe 10 1 ends, and the other end of described feed pipe 10 is by charging aperture and cylindrical shell 3 internal communication; Described closure plate and charging aperture are suitable;
2] open motor, start and stir, open simultaneously vavuum pump cylindrical shell is vacuumized, this moment, material HN-150 to be dried passed through in the cylindrical shell of vacuum material-pumping tube 9, feed pipe 10 and charging aperture adding, until the volume of material to be dried accounts for 2/3 of cylindrical shell volume, take out feed pipe, cover closure plate;
3] heat to cylindrical shell;
4] until when temperature arrives 105 ℃ in the cylindrical shell, and cylinder internal pressure≤-during 0.07Mpa, stopped heating is closed vavuum pump, and HN-150 is dry to be finished.
Above-mentioned rotating shaft 7 is set with mechanical seal 12, and described mechanical seal 12 is arranged between rotating shaft 7 and the cylindrical shell 3.
Above-mentioned ribbon vacuum drier also comprises the axle sleeve 13 that is sleeved in the rotating shaft, and described axle sleeve 13 is arranged between mechanical seal 12 and the cylindrical shell 3.
Above-mentioned feed pipe 10 is connected with charging aperture by opening soon interface 11.
Above-mentioned mechanical seal 12 is the band water jacket.
Above-mentioned feed pipe 10 is metal bellow.
The material of above-mentioned mechanical seal 12 is silicon carbide material.
Above-mentioned axle sleeve is the tetrafluoro axle sleeve.
The advantage that the present invention has:
1, drying means of the present invention adopts the anti-yellow agent of ribbon vacuum drier oven dry, and average product volatility adopts the anti-yellow agent of oven for drying will hang down 0.14%, and product quality is better.
2, after adopting the ribbon vacuum drier to carry out dynamic drying, the pure white non-variegation of final dry products obtained therefrom color, average volatility is 0.1%, colourity≤30 are black once, meet quality standard.Dried product volatility uniformity is better in addition, all floats ± 0.05%, far below static drying effects such as square vacuum drying ovens.
3, adopt this kind drying process, the solvent average recovery rate is high, average out to 97.3% illustrates the again basic noresidue in the equipment of former solvent, has solved uncap the environmental pollution that rear a large amount of toxic solvent gaseous volatilization causes and to the potential hazard of employee's occupational health of former vacuum drying oven.
Description of drawings
Fig. 1 is the structural representation of modified ribbon vacuum drier of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is mechanical seal structure schematic diagram of the present invention.
The specific embodiment
A kind of method of utilizing the dry HN-150 of ribbon vacuum drier may further comprise the steps:
1] ribbon vacuum drier; Comprise support 2, be fixed on cylindrical shell 3, closure plate, motor 1 and rotating shaft 7 on the support 2, described rotating shaft 7 is tightly connected with cylindrical shell, described motor 1 is connected with rotating shaft 7 by belt pulley 5, gear 6, also comprise the vacuum feed assembly, described vacuum feed assembly comprises charging aperture, feed pipe 10 and the vacuum material-pumping tube 9 that is arranged on the cylindrical shell 3, described vacuum material-pumping tube 9 one ends are connected with feed pipe 10 1 ends, and the other end of described feed pipe 10 is by charging aperture and cylindrical shell 3 internal communication; Described closure plate and charging aperture are suitable;
2] open motor, start and stir, open simultaneously vavuum pump cylindrical shell is vacuumized, this moment, material HN-150 to be dried passed through in the cylindrical shell of vacuum material-pumping tube 9, feed pipe 10 and charging aperture adding, until the volume of material to be dried accounts for 2/3 of cylindrical shell volume, take out feed pipe, cover closure plate;
3] heat to cylindrical shell; (mode of heating has a lot, for example jacket type heating.）
4] until when temperature arrives 105 ℃ in the cylindrical shell, and cylinder internal pressure≤-during 0.07Mpa, stopped heating is closed vavuum pump, and HN-150 is dry to be finished.
Closure plate generally covers on charging aperture, just when charging, closure plate is taken off.
Rotating shaft 7 is set with mechanical seal 12, and described mechanical seal 12 is arranged between rotating shaft 7 and the cylindrical shell 3.
Also comprise the axle sleeve 13 that is sleeved in the rotating shaft, described axle sleeve 13 is arranged between mechanical seal 12 and the cylindrical shell 3.
For embodying the advantage of dynamic drying, below in conjunction with the industrial production example, adopt together the product drying result of the static drying process of vacuum drying oven to compare the dynamic drying process that adopts the ribbon vacuum drier:
1, dry rear material volatility contrast:
Each extracts 6 batches vacuum drying oven and the anti-yellow agent volatility data of ribbon vacuum drier oven dry compare, and the results are shown in following table 1:
Table 1
As can be seen from Table 1, adopt the anti-yellow agent of ribbon vacuum drier oven dry, average product volatility adopts the anti-yellow agent of oven for drying will hang down 0.14%, and product quality is better.In more than 40 individual batches of adopting ribbon drying machine drying, under normal drying condition, prevent yellow agent volatility all≤0.3%, qualification rate 100%.
2, dry rear material volatility uniformity contrast:
Each extracts same baking oven of 3 batches and carries out volatility relatively with different samples in the ribbon drying machine, the results are shown in Table 2:
Table 2
As can be seen from Table 2, the anti-yellow agent volatility uniformity of ribbon vacuum drier drying is better, all float ± 0.05%, and the volatility uniformity of square vacuum drying oven is poor, the maximum variation of the volatility of same interior each drip pan of baking oven surpasses 3%, cause unstable product quality, and the underproof product of volatility needs again again baking, affects production efficiency.
The solvent recovering rate contrast:
Each extracts 6 batches vacuum drying oven and the solvent recovering rate after the oven dry of ribbon vacuum drier compares, and the results are shown in following table:
Table 3
| Device name | 1 | 2 | 3 | 4 | 5 | 6 | Average recovery rate |
| The ribbon vacuum drier | 96% | 95% | 99% | 99% | 97% | 98% | 97.3% |
| Square vacuum drying oven | 76% | 83% | 89% | 85% | 86% | 83% | 83.6% |
As can be seen from Table 3, the more square vacuum drying oven of the solvent recovering rate of ribbon vacuum drier on average exceeds 13.7%, improved on the one hand the solvent recovery amount, reduced solvent loss, ribbon vacuum drier no solvent residue in the equipment after oven dry finishes also has been described on the other hand, has solved uncap the environmental pollution that rear a large amount of toxic solvent gaseous volatilization causes and to the potential hazard of employee's occupational health of former vacuum drying oven.
As can be seen from the above table, after adopting the ribbon vacuum drier to carry out dynamic drying, the pure white non-variegation of final dry products obtained therefrom color, average volatility is 0.1%, colourity≤30 are black once, meet quality standard.Dried product volatility uniformity is better in addition, all floats ± 0.05%, far below static drying effects such as square vacuum drying ovens.Adopt this kind drying process, the solvent average recovery rate is high, average out to 97.3% illustrates the again basic noresidue in the equipment of former solvent, has solved uncap the environmental pollution that rear a large amount of toxic solvent gaseous volatilization causes and to the potential hazard of employee's occupational health of former vacuum drying oven.
Claims (8)
1. a method of utilizing the dry HN-150 of ribbon vacuum drier is characterized in that, may further comprise the steps:
1] ribbon vacuum drier; Comprise support (2), be fixed on the cylindrical shell (3) on the support (2), closure plate, motor (1) and rotating shaft (7), described rotating shaft (7) is tightly connected with cylindrical shell, described motor (1) is by belt pulley (5), gear (6) is connected with rotating shaft (7), also comprise the vacuum feed assembly, described vacuum feed assembly comprises the charging aperture that is arranged on the cylindrical shell (3), feed pipe (10) and vacuum material-pumping tube (9), described vacuum material-pumping tube (9) one ends are connected with feed pipe (10) one ends, and the other end of described feed pipe (10) is by charging aperture and cylindrical shell (3) internal communication; Described closure plate and charging aperture are suitable;
2] open motor, start and stir, opening simultaneously vavuum pump vacuumizes cylindrical shell, this moment, material HN-150 to be dried passed through in the cylindrical shell of vacuum material-pumping tube (9), feed pipe (10) and charging aperture adding, until the volume of material to be dried accounts for 2/3 of cylindrical shell volume, take out feed pipe, cover closure plate;
3] heat to cylindrical shell;
4] until when temperature arrives 105 ℃ in the cylindrical shell, and cylinder internal pressure≤-during 0.07Mpa, stopped heating is closed vavuum pump, and HN-150 is dry to be finished.
2. the method for utilizing the dry HN-150 of ribbon vacuum drier according to claim 1, it is characterized in that: described rotating shaft (7) is set with mechanical seal (12), and described mechanical seal (12) is arranged between rotating shaft (7) and the cylindrical shell (3).
3. the method for utilizing the dry HN-150 of ribbon vacuum drier according to claim 2, it is characterized in that: also comprise the axle sleeve (13) that is sleeved in the rotating shaft, described axle sleeve (13) is arranged between mechanical seal (12) and the cylindrical shell (3).
4. according to claim 1 and 2 or the 3 described methods of utilizing the dry HN-150 of ribbon vacuum drier, it is characterized in that: described feed pipe (10) is connected with charging aperture by opening soon interface (11).
5. the method for utilizing the dry HN-150 of ribbon vacuum drier according to claim 4, it is characterized in that: described mechanical seal (12) is the band water jacket.
6. the method for utilizing the dry HN-150 of ribbon vacuum drier according to claim 5, it is characterized in that: described feed pipe (10) is metal bellow.
7. the method for utilizing the dry HN-150 of ribbon vacuum drier according to claim 6, it is characterized in that: the material of described mechanical seal (12) is silicon carbide material.
8. the method for utilizing the dry HN-150 of ribbon vacuum drier according to claim 7, it is characterized in that: described axle sleeve is the tetrafluoro axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105200058A CN103017489A (en) | 2012-12-03 | 2012-12-03 | Method for drying HN-150 by utilizing ribbon vacuum dryer |
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| CN2012105200058A CN103017489A (en) | 2012-12-03 | 2012-12-03 | Method for drying HN-150 by utilizing ribbon vacuum dryer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075330U (en) * | 1990-09-19 | 1991-04-17 | 湖北省粮食机械厂 | Spirostrip type vacuum drier |
| JPH08309396A (en) * | 1995-05-22 | 1996-11-26 | Ishigaki Mech Ind Co | Vacuum drying device and drying method for slurry and the like |
| JPH11287560A (en) * | 1998-04-02 | 1999-10-19 | Toyo Plant:Kk | Rotary type vacuum drier |
| CN2898740Y (en) * | 2005-11-25 | 2007-05-09 | 查晓峰 | Spiral belt rake vacuum drier |
| CN101571345A (en) * | 2009-06-11 | 2009-11-04 | 查晓峰 | Multifunctional vacuum conical mixing-drying unit |
-
2012
- 2012-12-03 CN CN2012105200058A patent/CN103017489A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075330U (en) * | 1990-09-19 | 1991-04-17 | 湖北省粮食机械厂 | Spirostrip type vacuum drier |
| JPH08309396A (en) * | 1995-05-22 | 1996-11-26 | Ishigaki Mech Ind Co | Vacuum drying device and drying method for slurry and the like |
| JPH11287560A (en) * | 1998-04-02 | 1999-10-19 | Toyo Plant:Kk | Rotary type vacuum drier |
| CN2898740Y (en) * | 2005-11-25 | 2007-05-09 | 查晓峰 | Spiral belt rake vacuum drier |
| CN101571345A (en) * | 2009-06-11 | 2009-11-04 | 查晓峰 | Multifunctional vacuum conical mixing-drying unit |
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Application publication date: 20130403 |