CN112522817A - Production process of odorless viscose fiber - Google Patents
Production process of odorless viscose fiber Download PDFInfo
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- CN112522817A CN112522817A CN202011401171.7A CN202011401171A CN112522817A CN 112522817 A CN112522817 A CN 112522817A CN 202011401171 A CN202011401171 A CN 202011401171A CN 112522817 A CN112522817 A CN 112522817A
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- Prior art keywords
- viscose fiber
- desulfurization
- acid
- odorless
- liquor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/06—Washing or drying
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a production process of odorless viscose fiber, which comprises a desulfurization process, wherein the desulfurization process is carried out by adopting sodium sulfide or alkali liquor, and after the viscose fiber is desulfurized by adopting sodium sulfide, acid liquor is adopted to carry out acid pickling desulfurization on the viscose fiber. According to the production process, sodium sulfide or alkali liquor is adopted for desulfurization, and then acid liquor is further adopted for acid pickling desulfurization, so that the desulfurization effect can be greatly improved, the sulfur smell contained in the fiber is obviously reduced, the safety is higher, and the application market of the product is enlarged.
Description
Technical Field
The invention relates to the field of textile manufacturing, in particular to a production process of odorless viscose.
Background
The viscose fiber is a textile fiber which is widely applied by people at present, and the common viscose fiber has excellent wearability and wide application range. The viscose fiber is man-made fiber produced by taking natural cellulose as a main raw material, and natural cellulose materials such as cotton, bamboo, wood pulp and the like provide a wide raw material base for the viscose fiber. In addition, some performances of the viscose fiber are extremely similar to those of natural cotton fiber, and the viscose fiber has the advantages of better hygroscopicity, dyeability, antistatic property, comfortable wearing and incomparable advantages of other chemical fibers. But the disadvantage is also obvious that the strength of the viscose fiber is low, especially the wet strength, which is usually about half of the dry strength; the fabric made of viscose fiber cannot be strongly rubbed and washed when being washed, and the service life is short; the shrinkage rate of the viscose fiber is high, and the appearance of the washed fabric is not ideal; viscose has poor elasticity, is easy to deform when being worn, generates wrinkles and influences the attractive appearance of fabrics. Patent No. CN101024907A discloses a viscose fiber with high wet modulus, which has higher strength and wet modulus, but the prior art generally has the defects that the viscose fiber still contains higher content of 'S' after being treated by a desulfurization process, and the taste of the fiber is heavy.
Disclosure of Invention
The invention aims to solve the technical problems that the existing process still contains high-content S after the viscose fiber is subjected to desulfurization process treatment, and the fiber has heavy taste, and aims to provide a production process of the odorless viscose fiber.
The invention is realized by the following technical scheme:
the production process of the odorless viscose fiber comprises a desulfurization process, wherein the desulfurization process is carried out by adopting sodium sulfide or alkali liquor, and after the viscose fiber is desulfurized by adopting the sodium sulfide or the alkali liquor, the viscose fiber is pickled and desulfurized by adopting acid liquor.
The concentration of the acid liquor is 3-5 g/L.
After acid cleaning and desulfuration, alkali liquor is adopted for neutralization and cleaning, and the concentration of the alkali liquor is 0.8-1.2 g/L.
The acid liquor is prepared by adopting concentrated sulfuric acid with the concentration of 1800 g/L.
The pickling solution is carried out by adopting a control mode of a head tank and an orifice flowmeter.
The viscose fiber is pickled in a spraying mode.
According to the viscose fiber production process, sodium sulfide or alkali liquor is adopted for desulfurization, and then acid liquor is further adopted for acid pickling desulfurization, so that the desulfurization effect can be greatly improved, and the sulfur flavor contained in the fiber is obviously reduced. In the prior art, after sodium sulfide or alkali liquor is used for desulfurization, most of sulfur content in the fiber can be removed, but part of sulfur still remains, so that the product has a big taste, and the application of the product is limited to a certain extent; according to the invention, the desulfurization effect can be greatly improved by a mode of combining sodium sulfide or alkali liquor and acid liquor pickling, and a small amount of residual sulfur can be eluted by adopting pickling after the sodium sulfide or alkali liquor desulfurization process, so that H can be detected from a pickling station2S gas reaches 100mg/m3Therefore, the residual amount of sulfur is greatly reduced, and the desulfurization effect and the product quality are improved.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the production process of the odorless viscose fiber, sodium sulfide or alkali liquor is adopted for desulfurization, and then acid liquor is further adopted for acid pickling desulfurization, so that the desulfurization effect can be greatly improved, the sulfur smell contained in the fiber is obviously reduced, the safety is higher, and the application market of the product is increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of an acid solution preparation elution process according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The utility model provides a tasteless viscose fiber production technology, includes the desulfurization process, the desulfurization process adopts concentration to go on for 4 g/L's sodium sulfide and 1g/L alkali lye, adopts sodium sulfide and alkali lye to carry out the desulfurization back to viscose fiber, adopts the sulphuric acid that concentration is 3g/L again to carry out the pickling desulfurization to viscose fiber, and after the pickling desulfurization was accomplished, adopts alkali lye again to carry out the neutralization cleaning, and the concentration of alkali lye is 1.0 g/L.
Furthermore, the viscose fiber is pickled in a spraying mode.
Example 2
The utility model provides a tasteless viscose fiber production technology, includes the desulfurization process, the desulfurization process adopts concentration to go on for 4 g/L's sodium sulfide and 1g/L alkali lye, adopts sodium sulfide and alkali lye to carry out the desulfurization back to viscose fiber, adopts the sulphuric acid that concentration is 5g/L again to carry out the pickling desulfurization to viscose fiber, and after the pickling desulfurization was accomplished, adopts alkali lye again to carry out the neutralization cleaning, and the concentration of alkali lye is 1.0 g/L.
Comparative example 1
The production process of the viscose fibers comprises a desulfurization process, wherein the desulfurization process is carried out by adopting sodium sulfide and 1g/L alkali liquor with the concentration of 4g/L, the viscose fibers are subjected to acid pickling desulfurization by adopting sulfuric acid with the concentration of 1g/L after being desulfurized by adopting the sodium sulfide and the alkali liquor, and after the acid pickling desulfurization is finished, the viscose fibers are neutralized and cleaned by adopting the alkali liquor, and the concentration of the alkali liquor is 1.0 g/L.
Comparative example 2
The production process of the viscose fibers comprises a desulfurization process, wherein the desulfurization process is carried out by adopting sodium sulfide and 1g/L alkali liquor with the concentration of 4g/L, the viscose fibers are subjected to acid pickling desulfurization by adopting sulfuric acid with the concentration of 10g/L after being desulfurized by adopting the sodium sulfide and the alkali liquor, and after the acid pickling desulfurization is finished, the viscose fibers are neutralized and cleaned by adopting the alkali liquor, wherein the concentration of the alkali liquor is 1.0 g/L.
The sulfur content in the residual acid solution eluted from the treatments of examples 1-2 and comparative examples 1-2 was measured, and the strength and wet modulus of the viscose fiber products obtained after production were measured, and the results are shown in the following table.
From examples 1-2, it can be seen that the concentration of sulfuric acid in the present invention is selected to be 3-5g/L, which enables sufficient sulfur to be eluted, and the product has good strength and wet modulus; the concentration of sulfuric acid in comparative example 1 is low, and the washing desulfurization capability is far lower than that of examples 1 and 2 of the present invention; while the comparative example 2 uses sulfuric acid with concentration far higher than the concentration range of the invention for elution, the washing desulfurization capacity of the sulfuric acid is not much different from that of the examples 1 and 2, and no significant difference exists, but the strength and the wet modulus of the prepared product are obviously reduced, which shows that the sulfuric acid with concentration too high can not promote the washing desulfurization capacity, but can reduce the product quality. In conclusion, the production process has good washing and desulfurizing capacity, greatly reduces the sulfur smell of the product, and can ensure that the product has good quality.
Example 3
As shown in figure 1, the acid liquor preparation and elution process of the invention comprises the steps of firstly filling 60% of soft water in a preparation tank, then adding 1800g/L of concentrated sulfuric acid into the soft water until the concentration of the acid liquor in the preparation tank reaches 40-45g/L, then transferring the acid liquor into a mother liquor tank, pumping the acid liquor out of the mother liquor tank, and then forming the acid liquor with the concentration of 3-5g/L to carry out acid washing and desulfurization on fibers in a control mode of an elevated tank and an orifice flowmeter.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The production process of the odorless viscose fiber comprises a desulfurization process, wherein the desulfurization process is carried out by adopting sodium sulfide or alkali liquor, and is characterized in that after the viscose fiber is desulfurized by adopting the sodium sulfide or the alkali liquor, the viscose fiber is pickled and desulfurized by adopting acid liquor.
2. The odorless viscose fiber production process as claimed in claim 1, wherein the acid solution has a concentration of 3-5 g/L.
3. The process for producing odorless viscose fiber according to claim 1, wherein after acid washing and desulfurization, neutralization and cleaning are carried out by using alkali liquor, and the concentration of the alkali liquor is 0.8-1.2 g/L.
4. The production process of the odorless viscose fiber according to claim 1, wherein the acid solution is prepared by using 1800g/L concentrated sulfuric acid.
5. The process for producing odorless viscose fiber according to claim 1, wherein the acid washing solution is controlled by a head tank + orifice flow meter.
6. The process for producing odorless viscose fiber according to claim 1, wherein the acid washing of the viscose fiber adopts a spraying mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011401171.7A CN112522817A (en) | 2020-12-04 | 2020-12-04 | Production process of odorless viscose fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011401171.7A CN112522817A (en) | 2020-12-04 | 2020-12-04 | Production process of odorless viscose fiber |
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| Publication Number | Publication Date |
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| CN112522817A true CN112522817A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011401171.7A Pending CN112522817A (en) | 2020-12-04 | 2020-12-04 | Production process of odorless viscose fiber |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB320161A (en) * | 1928-07-24 | 1929-10-10 | Earle H Morse | Process of making regenerated cellulose structures |
| GB464116A (en) * | 1935-10-04 | 1937-04-09 | John Gwynant Evans | Improvements in the manufacture of viscose rayon |
| CN102839439A (en) * | 2012-09-20 | 2012-12-26 | 青岛嘉胜隆贸易有限公司 | Viscose fiber for eliminating bad smell of perspiration and preparation method thereof |
| CN105734705A (en) * | 2014-12-09 | 2016-07-06 | 重庆市鸿腾无纺机械有限公司 | Post-treatment technology of viscose fiber spinning |
| CN107459122A (en) * | 2017-08-14 | 2017-12-12 | 宜宾丝丽雅股份有限公司 | Short fiber acidic water recycling process |
| CN109930225A (en) * | 2019-02-20 | 2019-06-25 | 赛得利（福建）纤维有限公司 | White viscose rayon of a kind of no chlorine drift height and preparation method thereof |
-
2020
- 2020-12-04 CN CN202011401171.7A patent/CN112522817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB320161A (en) * | 1928-07-24 | 1929-10-10 | Earle H Morse | Process of making regenerated cellulose structures |
| GB464116A (en) * | 1935-10-04 | 1937-04-09 | John Gwynant Evans | Improvements in the manufacture of viscose rayon |
| CN102839439A (en) * | 2012-09-20 | 2012-12-26 | 青岛嘉胜隆贸易有限公司 | Viscose fiber for eliminating bad smell of perspiration and preparation method thereof |
| CN105734705A (en) * | 2014-12-09 | 2016-07-06 | 重庆市鸿腾无纺机械有限公司 | Post-treatment technology of viscose fiber spinning |
| CN107459122A (en) * | 2017-08-14 | 2017-12-12 | 宜宾丝丽雅股份有限公司 | Short fiber acidic water recycling process |
| CN109930225A (en) * | 2019-02-20 | 2019-06-25 | 赛得利（福建）纤维有限公司 | White viscose rayon of a kind of no chlorine drift height and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 沈新元: "《化学纤维手册》", 30 September 2008, 中国纺织出版社 * |
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Application publication date: 20210319 |