CN104004103A - Yellowing process of viscose production - Google Patents
Yellowing process of viscose production Download PDFInfo
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- CN104004103A CN104004103A CN201410247317.5A CN201410247317A CN104004103A CN 104004103 A CN104004103 A CN 104004103A CN 201410247317 A CN201410247317 A CN 201410247317A CN 104004103 A CN104004103 A CN 104004103A
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- alkali
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- dissolved water
- yellowing
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Abstract
The invention provides a yellowing process of viscose production. The process comprises the following steps: (A) after yellowing reaction is ended, adding primary dissolution alkali and secondary dissolution alkali into a yellowing machine successively, and adding primary dissolution water while adding secondary dissolution alkali; (B) opening a discharging valve to enable cellulose sulfonate in the yellowing machine to flow to a grinding machine from a discharging pipeline, and adding secondary dissolution water into the discharging pipeline while opening the discharging valve; (C) when the discharging rate is more than 90%, adding flushing alkali into the yellowing machine, and fully discharging, namely ending a yellowing cycle. According to the process, the dissolution water is added while the dissolution alkali is added, so that the time for separately adding the dissolution water is saved and the purposes of shortening the production cycle of the yellowing machine, increasing the production capacity of the yellowing machine, improving the operating stability of equipment and reducing the current consumption of the equipment and the energy consumption are achieved.
Description
Technical field
The invention belongs to viscose fiber production field, be specifically related to the yellow technique that a kind of viscose fiber is produced.
background of invention
As the saying goes: " seven minutes glues, spinning in three minutes." quality and the fiber product quality of visible viscose quality have larger impact, what viscose quality was played a decisive role is the control to yellow technique.The length of the cycle time of yellow, in yellow process, the control of temperature etc. is all the key issue that determines viscose quality.
The viscose fiber yellow processing step of prior art is: after yellow reaction finishes; in from xanthating machine top toward xanthating machine, add successively and once dissolve that alkali, secondary dissolve alkali, dissolved water carries out just dissolving; make the viscose glue in viscose staple fibre production; then open discharging pump discharging; material adds flushing alkali in the time of having gone out; material is closed after rolling bottom valve, is stopped making glue pump, stopping xanthate acid pulverizer, now a yellow end cycle.A yellow cycle required time is 110 minutes, and the whole yellow time in yellow cycle only needed about 50 minutes, and all the other times are more short better.
Existing yellow adds water discharging technology and has following shortcoming:
1, the xanthating machine production cycle longer, production capacity is lower;
2, discharging pump and pulverizer electric current are high during xanthating machine discharging, and energy consumption is high, and very easily tripping operation, cause yellow cycle stretch-out;
3, viscose glue group and the mixing of dissolving buck are inhomogeneous, easily cause discharging pump stuck, equipment fluctuation of service.
As 200410084025.0, name is called the patent of invention of " a kind of yellow method of producing for viscose fiber ", discloses a kind of yellow method of producing for viscose fiber, and its technical scheme is: soda cellulose and CS
2yellow process by dry xanthation and wet method yellow two steps, completed, soda cellulose first with CS
2carry out dry xanthation, and then add alkali lye to carry out wet method yellow in soda cellulose, until yellow end of processing.The mode that this patent adopts dry wet method yellow to combine, the viscose glue phenomenon of uniting is obvious, and the diameter of uniting can reach more than 1 meter, is unfavorable for follow-up dissolving and milling work order.
Summary of the invention
The present invention is directed to above-mentioned technical problem, the yellow technique that provides a kind of viscose fiber to produce.The present invention adds dissolved water when adding dissolving alkali, has saved the time of independent interpolation dissolved water, has realized the shortening xanthating machine production cycle, improves xanthating machine production capacity, improves stable equipment operation, and reduction equipment is used electric current, reduces the object of energy consumption.
For achieving the above object, the present invention adopts following technical scheme:
The yellow technique that viscose fiber is produced, is characterized in that: processing step is as follows:
After A yellow reaction finishes, to successively adding in xanthating machine, once dissolve alkali and secondary dissolves alkali, when adding secondary to dissolve alkali, add one time dissolved water;
B opens bleeder valve, and the cellulose sulfonate in xanthating machine flows to pulverizer from discharge pipe, when opening bleeder valve, in discharge pipe, adds secondary dissolved water;
C discharging reaches 90% when above, in xanthating machine, adds flushing alkali, expects the i.e. end in a yellow cycle.
The present invention adds dissolved water at twice, and dissolved water and secondary dissolve alkali and add simultaneously, is conducive to save the time that adds water, increases pipeline pressure simultaneously, improves the effect of the viscose glue that buck scouring machine wall and stir shaft adhere to.
In discharging, in the discharge pipe of connection pulverizer, add remaining dissolved water, not only saved the time that adds water, and, water is evenly mixed in pulverizer with cellulose sulfonate, and than the better effects if that adds water mixing in xanthating machine, the esterified degree of cellulose sulfonate is more even, avoided plugging, equipment operation is more stable.On the other hand, because dissolved water adds through piping, the running current of pulverizer and discharging pump obviously declines; The mixed viscose glue of pulverizer enters into the milling system that can directly start predissolve after predissolve machine, shortens the dissolving cycle, can also shorten discharging time, thereby further shorten the yellow cycle simultaneously.
The mass ratio that once dissolves alkali and secondary dissolving alkali of the present invention is 1:3 ~ 1:1.The object that adds an alkali is to add that to restart high-speed stirring load after alkali little, is difficult for tripping operation, guarantees that high-speed stirring can start smoothly; The object that adds secondary alkali is that under xanthating machine high-speed stirring, mixing effect is better, and solute effect is better.
Of the present invention once dissolve alkali and finish after, xanthating machine speed-raising is to adding secondary to dissolve alkali more at a high speed in xanthating machine, better mixed viscose and dissolve alkali, improves just solute effect.
The mass ratio of a dissolved water of the present invention and secondary dissolved water is 1:4 ~ 2:3, mixing while effectively guaranteeing discharging.
It is 20 ~ 28 L/s that the present invention adds the speed of dissolving alkali, guarantees solute effect.
The flushing pressure that the present invention rinses alkali is 0.2 ~ 0.6 Mpa, guarantees developing result.
The temperature of dissolving alkali of the present invention and dissolved water is 3 ~ 18 ℃.
Beneficial effect of the present invention is:
1, yellow technique of the present invention adds dissolved water at twice, when adding secondary dissolving alkali and discharging, adds dissolved water, has saved the time that adds dissolved water, has effectively shortened the whole yellow cycle.The interests that technique of the present invention is brought to enterprise are considerable, and the production capacity of every xanthating machine reaches 20,000 tons/platform/year, and production capacity improves 54%, save power consumption 200,000 degree/year/platforms, save power consumption 35 %, the esterified degree of product reaches more than 50, under stay-in-grade prerequisite, greatly saved cost.
2, yellow technique of the present invention is in discharging, in the discharge pipe of connection pulverizer, add remaining dissolved water, water is evenly mixed in pulverizer with cellulose sulfonate, than the better effects if that adds water mixing in xanthating machine, the esterified degree of cellulose sulfonate is more even, can avoid uniting, unite diameter lower than 20 centimetres, avoided plugging, equipment operation is more stable, is conducive to follow-up dissolving and milling work order simultaneously.On the other hand, because dissolved water adds through piping, the running current of pulverizer and discharging pump obviously declines; The mixed viscose glue of pulverizer enters into the milling system that can directly start predissolve after predissolve machine, has saved follow-up mixed processes, shortens the dissolving cycle, can also shorten discharging time, thereby further shorten the yellow cycle simultaneously.
3, the present invention is after once dissolving alkali and finishing, and xanthating machine speed-raising is to adding secondary to dissolve alkali more at a high speed in xanthating machine, adds that to restart high-speed stirring load after alkali little, is difficult for tripping operation, guarantees that high-speed stirring can start smoothly; The object that adds secondary alkali is better mixed viscose and dissolving alkali under xanthating machine high-speed stirring, improves just solute effect.
Embodiment
Below in conjunction with embodiment, essentiality content of the present invention is described in further detail.
Embodiment 1
The yellow technique that viscose fiber is produced, processing step is as follows:
After A yellow reaction finishes, to successively adding in xanthating machine, once dissolve alkali and secondary dissolves alkali, when adding secondary to dissolve alkali, add one time dissolved water;
B opens bleeder valve, and the cellulose sulfonate in xanthating machine flows to pulverizer from discharge pipe, when opening bleeder valve, in discharge pipe, adds secondary dissolved water;
C discharging reaches 90% when above, in xanthating machine, adds flushing alkali, expects the i.e. end in a yellow cycle.
Embodiment 2
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:3.
Embodiment 3
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:1.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
Embodiment 4
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:2.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
The mass ratio of a described dissolved water and secondary dissolved water is 1:4.
Embodiment 5
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:1.5.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
The mass ratio of a described dissolved water and secondary dissolved water is 2:3.
The described flow velocity that once dissolves alkali and secondary dissolving alkali is 20L/s.
Embodiment 6
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:2.5.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
The mass ratio of a described dissolved water and secondary dissolved water is 1:2.
The described flow velocity that once dissolves alkali and secondary dissolving alkali is 28 L/s.
The flushing pressure of described flushing alkali is 0.2 Mpa.
Embodiment 7
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:1.8.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
The mass ratio of a described dissolved water and secondary dissolved water is 1:3.
The described flow velocity that once dissolves alkali and secondary dissolving alkali is 25L/s.
The flushing pressure of described flushing alkali is 0.6 Mpa.
The temperature of described dissolving alkali and dissolved water is 3 ℃.
Embodiment 8
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:2.2.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
The mass ratio of a described dissolved water and secondary dissolved water is 1:2.5.
The described flow velocity that once dissolves alkali and secondary dissolving alkali is 22L/s.
The flushing pressure of described flushing alkali is 0.5Mpa.
The temperature of described dissolving alkali and dissolved water is 18 ℃.
Embodiment 9
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:1.6.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
The mass ratio of a described dissolved water and secondary dissolved water is 1:3.5.
The described flow velocity that once dissolves alkali and secondary dissolving alkali is 26 L/s.
The flushing pressure of described flushing alkali is 0.3Mpa.
The temperature of described dissolving alkali and dissolved water is 10 ℃.
Embodiment 10
The embodiment of the present embodiment is substantially the same manner as Example 1, on this basis:
The described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:2.6.
After described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
The mass ratio of a described dissolved water and secondary dissolved water is 1:1.8.
The described flow velocity that once dissolves alkali and secondary dissolving alkali is 23 L/s.
The flushing pressure of described flushing alkali is 0.4 Mpa.
The temperature of described dissolving alkali and dissolved water is 15 ℃.
Claims (7)
1. the yellow technique that viscose fiber is produced, is characterized in that: processing step is as follows:
After A yellow reaction finishes, to successively adding in xanthating machine, once dissolve alkali and secondary dissolves alkali, when adding secondary to dissolve alkali, add one time dissolved water;
B opens bleeder valve, and the cellulose sulfonate in xanthating machine flows to pulverizer from discharge pipe, when opening bleeder valve, in discharge pipe, adds secondary dissolved water;
C discharging reaches 90% when above, in xanthating machine, adds flushing alkali, expects the i.e. end in a yellow cycle.
2. the yellow technique that a kind of viscose fiber according to claim 1 is produced, is characterized in that: the described mass ratio that once dissolves alkali and secondary dissolving alkali is 1:3 ~ 1:1.
3. the yellow technique that a kind of viscose fiber according to claim 1 is produced, is characterized in that: after described once dissolving alkali finishes, xanthating machine speed-raising is to adding secondary to dissolve alkali in xanthating machine more at a high speed.
4. the yellow technique that a kind of viscose fiber according to claim 1 is produced, is characterized in that: the mass ratio of a described dissolved water and secondary dissolved water is 1:4 ~ 2:3.
5. the yellow technique that a kind of viscose fiber according to claim 1 is produced, is characterized in that: the described flow velocity that once dissolves alkali and secondary dissolving alkali is 20 ~ 28 L/s.
6. the yellow technique that a kind of viscose fiber according to claim 1 is produced, is characterized in that: the flushing pressure of described flushing alkali is 0.2 ~ 0.6 Mpa.
7. the yellow technique that a kind of viscose fiber according to claim 1 is produced, is characterized in that: the temperature of described dissolving alkali and dissolved water is 3 ~ 18 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410247317.5A CN104004103B (en) | 2014-06-06 | 2014-06-06 | The yellow technique that a kind of viscose fiber is produced |
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| CN201410247317.5A CN104004103B (en) | 2014-06-06 | 2014-06-06 | The yellow technique that a kind of viscose fiber is produced |
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| CN104004103A true CN104004103A (en) | 2014-08-27 |
| CN104004103B CN104004103B (en) | 2016-02-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108250305A (en) * | 2018-02-12 | 2018-07-06 | 赛得利（福建）纤维有限公司 | A kind of yellow subsequent process that can be improved viscose glue and prepare production capacity |
| CN112724264A (en) * | 2020-12-28 | 2021-04-30 | 宜宾丝丽雅股份有限公司 | Application method of bipolar membrane alkali liquor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1618816A (en) * | 2004-10-18 | 2005-05-25 | 保定天鹅股份有限公司 | Xanthating method used in viscous fiber production |
| CN1986571A (en) * | 2006-10-24 | 2007-06-27 | 唐山三友集团化纤有限公司 | Technological process of controlling yellowing of short viscose fiber by means of recipe program |
| CN102393694A (en) * | 2011-09-27 | 2012-03-28 | 宜宾海丝特纤维有限责任公司 | Yellowing automatic control system in production of short fiber stock solution viscose |
-
2014
- 2014-06-06 CN CN201410247317.5A patent/CN104004103B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1618816A (en) * | 2004-10-18 | 2005-05-25 | 保定天鹅股份有限公司 | Xanthating method used in viscous fiber production |
| CN1986571A (en) * | 2006-10-24 | 2007-06-27 | 唐山三友集团化纤有限公司 | Technological process of controlling yellowing of short viscose fiber by means of recipe program |
| CN102393694A (en) * | 2011-09-27 | 2012-03-28 | 宜宾海丝特纤维有限责任公司 | Yellowing automatic control system in production of short fiber stock solution viscose |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108250305A (en) * | 2018-02-12 | 2018-07-06 | 赛得利（福建）纤维有限公司 | A kind of yellow subsequent process that can be improved viscose glue and prepare production capacity |
| CN112724264A (en) * | 2020-12-28 | 2021-04-30 | 宜宾丝丽雅股份有限公司 | Application method of bipolar membrane alkali liquor |
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| Publication number | Publication date |
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| CN104004103B (en) | 2016-02-10 |
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