Efficient and optimized refined cotton processing production method

Abstract

The invention relates to the technical field of refined cotton processing, in particular to an efficient and optimized refined cotton processing production method which comprises the following production steps: S1, preparing materials: selecting cotton linters as raw materials; s2, cotton opening is conducted, cotton linters are placed on a feeding port of a cotton opener, and equipment is started for cotton opening treatment; s3, preparation of a cooking agent: taking quinone and 2-methylquinone as assistants, putting the assistants into sodium hydroxide, sodium carbonate and amino acid salt, and mixing and stirring to prepare the cooking agent; and S4, cooking treatment: putting the cotton linters into the prepared cooking agent, cooking, and reacting sodium hydroxide with cellulose. By regulating and controlling the biological thallus glycolysis process, directional control over the polymerization degree of the product is achieved, the range of the polymerization degree is narrowed, the fiber reaction uniformity is improved, the fluctuation range of the polymerization degree of products of the same specification is smaller than 80, the impurity removal efficiency is improved, the content of impurities, ash and metal ions is reduced, efficient impurity removal and refining are achieved, and the quality of processed refined cotton is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of refined cotton processing, and in particular relates to a highly efficient and optimized refined cotton processing production method. Background Art

[0002] Refined cotton is a white flocculent fiber without impurities such as sawdust, mud, oil, mineral ions, etc. It is called "industrial MSG" because of its wide application in food processing, papermaking industry, petrochemical industry, metallurgical industry, aerospace industry and other industries. The processing technology of refined cotton in the prior art includes three stages: refining, cotton making and spinning. In the refining stage, the raw materials are sorted, degummed, washed, dehydrated and dried to remove impurities and sericin to obtain refined cotton. The cotton making stage includes wetting, weighing, opening, cutting and combing to further process the refined cotton into refined cotton. Finally, in the spinning stage, the refined cotton is stretched, striped, drawn, roving, spun yarn and other processes, as well as double silk, twisting, whole silk and singeing to finally make silk products. The whole process is complex and delicate, requiring the coordinated operation of multiple links and equipment to ensure product quality.

[0003] In current technology, the quality requirements for refined cotton are getting higher and higher. In the production process of refined cotton, chemical treatment is also an important step. Chemical reagents are used to treat cotton. An appropriate amount of chemical reagents are dissolved in water to prepare a treatment solution. The prepared cotton is placed in the treatment solution to ensure that the cotton is fully soaked. The soaking time also needs to be controlled according to the process requirements. During the soaking process, the chemical reagents will react with the lignin and hemicellulose impurities in the cotton, dissolving or converting them into soluble substances, thereby improving the purity of cellulose and improving the purity of refined cotton. However, the waste generated in this way has an impact on the environment, and its production process lacks maturity, resulting in the production of refined cotton with poor directional control of polymerization degree, a large polymerization degree range, and poor treatment and filtration of impurities. In this regard, we propose an efficient and optimized refined cotton processing and production method. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a highly efficient and optimized refined cotton processing and production method to solve the above technical problems.

[0005] To achieve the above object, the present invention provides the following technical solution: an efficient and optimized refined cotton processing production method, the production steps are:

[0006] S1, prepare materials, select cotton linters as raw materials;

[0007] S2, opening the cotton, placing the cotton linters on the feeding port of the cotton opener, and starting the equipment to open the cotton;

[0008] S3, preparing a cooking agent, placing anthraquinone and 2-methyl anthraquinone as auxiliary agents in sodium hydroxide, sodium carbonate and amino acid salt, mixing and stirring to prepare a cooking agent;

[0009] S4, cooking treatment, placing the cotton linters in the prepared cooking agent for cooking, wherein the sodium hydroxide reacts with the cellulose to remove impurities in the fibers, and the cooked cotton linters are taken out and aired;

[0010] S5, pouring and beating, adding the cotton linter fibers after the cooking process into water, stirring evenly, fully dispersing the fibers in the water, beating the mixture with a beating machine, and taking out the mixture after the beating is completed;

[0011] S6, removing slag, filtering the pulped mixture through a filtering device to remove impurities and solid particles to obtain pure cotton pulp;

[0012] S7, dehydration and concentration, using a centrifuge to dehydrate the cotton pulp, removing water from the cotton pulp by solid-liquid separation, while retaining the solid components in the cotton pulp;

[0013] S8, selecting a microbial combination that can ferment high-yield active ligninase, and fermenting the treated cotton linters through multi-strain coupled fermentation;

[0014] S9, chemical bleaching, bleaching the cotton linters by elemental chlorine-free bleaching;

[0015] S10, washing and drying, washing the bleached cotton linters, placing them in a dryer for drying, processing them to obtain refined cotton, testing the refined cotton, and packaging them after they are qualified;

[0016] Fermentation treatment is carried out using a specific combination of microorganisms to further improve the performance of cotton linters. Subsequently, the cotton linters are bleached using elemental chlorine-free bleaching, and the bleached cotton linters are washed and dried to finally produce refined cotton. The entire process focuses on environmental protection, high efficiency and quality control, aiming to improve raw material utilization, product performance and added value.

[0017] Preferably, in step S2, the equipment is allowed to run idle for 20 minutes to check whether there is obvious swaying or vibration of the machine body. Each operating part should run smoothly without abnormal noise. After the equipment runs normally, the feeding is started. When feeding, the cotton linters are placed neatly to ensure uniform feeding. After feeding, the cotton linters are opened;

[0018] Idle operation can check whether each component of the equipment is working properly, discover and prevent potential faults in time, and avoid shutdowns or production accidents caused by equipment failures during the production process. The cotton linters are placed neatly to ensure uniform feeding, which can ensure the uniform dispersion and processing of fibers during the cotton opening process, thereby improving the uniformity and consistency of the product. Uniform feeding can also reduce blockages and jams inside the equipment, maintain a smooth production process, and improve production efficiency.

[0019] Preferably, the mixing and stirring in step S3 is performed by adding water to a stirring container, slowly adding sodium hydroxide and sodium carbonate, stirring while adding until completely dissolved, adding anthraquinone and 2-methylanthraquinone, adding them to the solution, continuing to stir to fully mix them, using a pH meter to detect the pH value of the solution, adding acid or alkali to adjust according to the pH value, adding the amino acid salt to the solution, and continuing to stir until completely dissolved to prepare a cooking agent;

[0020] Appropriate pH and uniformly mixed cooking agents can react with cellulose in cotton linters more effectively, remove impurities, and improve the purity and subsequent processing performance of cotton linters. Accurately controlling the pH and composition ratio of the cooking agent can reduce the emission of harmful waste and pollutants generated during the cooking process, meeting environmental protection requirements. By slowly adding sodium hydroxide and sodium carbonate and stirring while adding, it can be ensured that these reagents are fully dissolved and dispersed in the stirring container to avoid excessive reactions or precipitation caused by local excessive concentrations. Through precise mixing and stirring and pH value control, the quality of the cooking agent can be ensured to be stable and reliable, thereby reducing production interruptions and failure rates caused by cooking agent problems.

[0021] In the cooking step of step S4, the cotton linters are placed in a cooking pot for cooking, the prepared cooking agent is added to the cooking equipment through a pipeline, the cooking pot is heated and heated for cooking, and the pressure and insulation time are maintained. During the insulation and pressure maintenance process, the cooking agent reacts with the cellulose, hemicellulose and lignin in the cotton linters. After the cooking is completed, the steam is released from the cooking pot, and the cooked cotton linters are taken out;

[0022] It can improve the purity of cotton linters. Through steaming treatment, a large amount of impurities in cotton linters can be removed in a short time, thereby shortening the time of subsequent treatment. After steaming treatment, the fiber structure of cotton linters is optimized, the bonding force between fibers is enhanced, and the fiber strength is improved. By accurately controlling parameters such as temperature, pressure and holding time during the steaming process, the steaming process can be ensured to proceed smoothly and the production cycle can be shortened. This helps to improve production efficiency and reduce production costs.

[0023] Preferably, in step S5, the beating time of the beater is 2 hours, the speed of the beater is 200 r / min, and during the beating process, the fibers in the cotton linters are refined and dispersed, resulting in physical changes.

[0024] The beater in this application is a key equipment. When the beater runs continuously at a constant speed of 200r / min for 2h, the fiber structure undergoes physical changes. In the early stage of pulping, with the high-speed rotation, the fibers in the cotton linters are subjected to strong mechanical shear force, which penetrates into the interior of the fibers, disintegrates the original form of the fibers, and gradually transforms the coarse bundle structure into finer fiber units. With the passage of time, the fiber refinement process is further intensified. Under the centrifugal force of high-speed rotation, the further breakage of the fibers is promoted, forming a more uniform fiber network. Under the strong mechanical action, the fiber bundles that were originally tightly gathered together gradually dispersed to form a looser fiber group. The fibers in the cotton linters undergo a profound transformation from coarse to fine and from tight to loose. This transformation not only improves the utilization value of the fibers, but also provides a better raw material basis for the production of subsequent products.

[0025] Preferably, in step S6, the filtering device is selected as a pressure filter, the parameters of the pressure filter are adjusted, the pulped cotton linters are evenly placed in the filtering device for filtering, the filtered pure cotton pulp is collected in a container, and after the filtering is completed, the filtering device is cleaned to remove residual impurities and solid particles, and the device is maintained;

[0026] Through filtration, impurities and solid particles in cotton linters can be effectively removed, the purity and uniformity of cotton pulp can be improved, and high-quality raw materials can be provided for subsequent processing. Through efficient filtration and timely cleaning and maintenance, the loss of cotton linters during the filtration process can be reduced, thereby reducing production costs.

[0027] Preferably, the centrifuge in step S7 is a butterfly centrifuge; in step S8, the microbial combination is selected by collecting microorganisms with lignin degradation ability from strains preserved in nature, strain banks and laboratories, including bacteria and fungi, and preliminarily screening microorganisms capable of producing ligninase through plate culture and liquid shake flask fermentation methods, and further rescreening to select strains with high enzyme activity and good stability, combining the screened different strains, and evaluating the effects of different combinations on the degradation of cotton linters through multi-strain coupled fermentation experiments, and selecting the optimal microbial combination, which is a high-yield ligninase of white capsule rake tooth fungus and birch fold inoculum;

[0028] By fermenting cotton linters, high-activity ligninase can be metabolized, inducing efficient metabolism of lignin, achieving high-rate fermentation of lignin, realizing directional control of product polymerization degree, narrowing the polymerization degree range, and improving fiber reaction uniformity.

[0029] Preferably, in step S8, the coupled fermentation is carried out by designing culture medium components, which include carbon sources, nitrogen sources, inorganic salts and growth factors. The culture medium is sterilized at high temperature. The fermentation time is 7 days. During the fermentation process, the metabolism of microbial growth is promoted by stirring. The cotton linter fermentation time is 10 days, and impurities in the cotton linter are processed by microorganisms.

[0030] Preferably, in step S9, the elemental chlorine-free bleaching is performed by treating the cotton linters under alkaline conditions to dissolve and remove lignin and other impurities, which serves as a basis for subsequent bleaching. The alkali-treated cotton linters are placed in a bleaching solution containing chlorine dioxide, and the strong oxidizing effect of chlorine dioxide is used to degrade lignin and other colored substances in the cotton linters for bleaching.

[0031] Compared with elemental chlorine bleaching, elemental chlorine-free bleaching does not produce a large amount of chlorine-containing toxic and harmful substances, such as chloroform, thereby significantly reducing environmental pollution. Since chlorine dioxide has less damage to fibers and hemicellulose, the bleached cotton linters can maintain better physical properties and mechanical strength.

[0032] Preferably, in step S10, the cotton linters are fully washed and dehydrated to remove residual bleach and other chemicals, and then dried, with the drying temperature at 40° C. and the drying time at 5 min.

[0033] The washing stage of the present application adopts an efficient and gentle cleaning method. Through the precisely designed washing equipment, the cotton linters are placed in an appropriate amount of clean water. The water flow and mechanical stirring are used to fully soak the fibers and release various impurities attached to their interior and surface. In this process, an appropriate amount of detergent or auxiliary agent is also added to enhance the cleaning effect. After washing, the waste water is separated from the impurities through a fine filtering system to retain the clean cotton linters. In order to effectively remove excess water from the washed fibers, advanced centrifugal dehydration technology is used. The wet cotton linters are placed in a high-speed rotating dehydration device, and the centrifugal force is used to quickly throw the water out of the fiber gaps to achieve the purpose of preliminary drying. The temperature of the dryer is 40°C, which can effectively remove the residual water in the fibers without damaging the physical and chemical properties of the fibers due to excessively high temperature. At the same time, the drying time is accurately controlled within 5 minutes to ensure that the cotton linters reach an ideal dry state in a short time.

[0034] Preferably, the refined cotton detection in step S10 includes detection of appearance, degree of polymerization and cellulose content.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present application achieves directional control of product polymerization degree, narrows the polymerization degree range, improves fiber reaction uniformity, achieves a polymerization degree fluctuation range of products of the same specification of less than 80, improves impurity removal efficiency, reduces impurities, ash, and metal ion content, achieves efficient impurity removal and refining, and improves the quality of processed refined cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a flowchart of the production steps of the present invention. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1

[0040] An efficient and optimized refined cotton processing production method, the production steps are:

[0041] S1, prepare materials, select cotton linters as raw materials;

[0042] S2, opening the cotton, placing the cotton linters on the feeding port of the cotton opener, and starting the equipment to open the cotton;

[0043] S3, preparing a cooking agent, placing anthraquinone and 2-methyl anthraquinone as auxiliary agents in sodium hydroxide, sodium carbonate and amino acid salt, mixing and stirring to prepare a cooking agent;

[0044] S4, cooking treatment, placing the cotton linters in the prepared cooking agent for cooking, wherein the sodium hydroxide reacts with the cellulose to remove impurities in the fibers, and the cooked cotton linters are taken out and aired;

[0045] S5, pouring and beating, adding the cotton linter fibers after the cooking process into water, stirring evenly, fully dispersing the fibers in the water, beating the mixture with a beating machine, and taking out the mixture after the beating is completed;

[0046] S6, removing slag, filtering the pulped mixture through a filtering device to remove impurities and solid particles to obtain pure cotton pulp;

[0047] S7, dehydration and concentration, using a centrifuge to dehydrate the cotton pulp, removing water from the cotton pulp by solid-liquid separation, while retaining the solid components in the cotton pulp;

[0048] S8, selecting a microbial combination that can ferment high-yield active ligninase, and fermenting the treated cotton linters through multi-strain coupled fermentation;

[0049] S9, chemical bleaching, bleaching the cotton linters by elemental chlorine-free bleaching;

[0050] S10, washing and drying, washing the bleached cotton linters, placing them in a dryer for drying, processing them to obtain refined cotton, testing the refined cotton, and packaging them after they are qualified.

[0051] Fermentation treatment is carried out using a specific combination of microorganisms to further improve the performance of cotton linters. Subsequently, the cotton linters are bleached using elemental chlorine-free bleaching, and the bleached cotton linters are washed and dried to finally produce refined cotton. The entire process focuses on environmental protection, high efficiency and quality control, aiming to improve raw material utilization, product performance and added value.

[0052] Comparative Example 1

[0053] Refined cotton processing production steps:

[0054] A1. Select raw materials: Refined cotton uses cotton linters as raw materials, and the selected cotton linters are preliminarily processed;

[0055] A2. Cooking: Cotton linters are cooked using a cooking liquid containing the chemical component of sodium hydroxide. During the cooking process, sodium hydroxide will produce a peeling reaction, a termination reaction, and an alkaline hydrolysis physical and chemical effect on cellulose, removing impurities in the fiber and improving the purity and reaction performance of cellulose.

[0056] A3. The cotton linters after steaming are bleached to remove the remaining impurities and pigments;

[0057] A4. Dehydrate the chemically treated cotton linters to remove excess water;

[0058] A5. Dry the dehydrated cotton linters to achieve the required moisture content. The temperature and time during the drying process should be controlled to avoid excessive damage to the cellulose.

[0059] A6. Finally, the processed cotton linters are processed into refined cotton products of various specifications, and the finished products are quality tested.

[0060] The production process of Comparative Example 1 is still lacking in maturity, resulting in poor directional control of the degree of polymerization of the refined cotton produced, a large range of degree of polymerization, more impurities in the refined cotton, and poor effect of filtering impurities.

[0061] Appearance inspection steps:

[0062] Prepare different refined cotton samples in Examples and Comparative Examples;

[0063] Use a standard light source box to observe whether the color of the refined cotton is uniform and consistent and whether it meets the specified color standards;

[0064] Carefully check whether there are defects on the surface of refined cotton, such as oil stains, color spots, cotton knots, and impurities. Grade and evaluate them according to the type and quantity of defects to determine the degree of impact on product quality.

[0065] Detection of degree of polymerization:

[0066] Prepare different refined cotton samples in the examples and comparative examples, ensure that they are clean and free of impurities, and cut the samples into pieces of appropriate size for subsequent dissolution and measurement;

[0067] Under standard temperature and humidity, accurately weigh a certain amount of refined cotton powder, calculate the moisture content of cotton fiber under standard temperature and humidity equal to 8%, and place it in a brown bottle;

[0068] Add copper wire and distilled water, then add copper ethylenediamine solution, remove the air in the bottle with nitrogen or hydrogen, seal the bottle mouth, and shake it in an oscillator for 2 hours to fully dissolve the cotton fiber;

[0069] Transfer the dissolved solution to the viscometer and balance it in a constant temperature water bath for 5 minutes to ensure that the solution temperature is constant;

[0070] Measure the time it takes for the solution to flow from one scale to another in the viscometer, and record this time as the outflow time of the measured liquid;

[0071] The elution time of the blank solution was measured in the same way as a reference;

[0072] The specific viscosity (ηsp) of the solution was calculated based on the measured elution time and the elution time of the blank solution.

[0073] Cellulose content detection:

[0074] Cellulose content was tested by chemical dissolution method;

[0075] Prepare different refined cotton samples in Examples and Comparative Examples;

[0076] Accurately measure a certain amount of sodium hydroxide solution and put it into a clean porcelain crucible, and keep it in a water bath at a constant temperature for a certain period of time;

[0077] The pretreated sample was placed in a porcelain crucible filled with sodium hydroxide, stirred evenly and allowed to stand for a while to allow the cellulose to fully dissolve;

[0078] Use a constant weight sand core crucible of known mass to filter until the filtrate is neutral. During the filtration process, add acetic acid solution to neutralize the residual alkali.

[0079] Rinse the sand core crucible and filter residue repeatedly with distilled water until the washing liquid is neutral;

[0080] Place the sand core crucible and filter residue in an oven and dry them to constant weight. Take them out and place them in a desiccator to cool to room temperature, then weigh them and record the mass.

[0081] The methyl (α) cellulose content was calculated based on the mass difference before and after drying and the sample mass.

[0082] The calculation formula is:

[0083] A fiber % = (weight of crucible and sample after drying - weight of crucible before drying) / sample * (1 - equilibrium moisture).

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient and optimized refined cotton processing and production method, characterized in that: The production steps are: S1, prepare materials, select cotton linters as raw materials; S2, opening the cotton, placing the cotton linters on the feeding port of the cotton opener, and starting the equipment to open the cotton; S3, preparing a cooking agent, placing anthraquinone and 2-methyl anthraquinone as auxiliary agents in sodium hydroxide, sodium carbonate and amino acid salt, mixing and stirring to prepare a cooking agent; S4, cooking treatment, placing the cotton linters in the prepared cooking agent for cooking, wherein the sodium hydroxide reacts with the cellulose to remove impurities in the fibers, and the cooked cotton linters are taken out and aired; S5, pouring and beating, adding the cotton linter fibers after the cooking process into water, stirring evenly, fully dispersing the fibers in the water, beating the mixture with a beating machine, and taking out the mixture after the beating is completed; S6, removing slag, filtering the pulped mixture through a filtering device to remove impurities and solid particles to obtain pure cotton pulp; S7, dehydration and concentration, using a centrifuge to dehydrate the cotton pulp, removing water from the cotton pulp by solid-liquid separation, while retaining the solid components in the cotton pulp; S8, selecting a microbial combination that can ferment high-yield active ligninase, and fermenting the treated cotton linters through multi-strain coupled fermentation; S9, chemical bleaching, bleaching the cotton linters by elemental chlorine-free bleaching; S10, washing and drying, washing the bleached cotton linters, placing them in a dryer for drying, processing them to obtain refined cotton, testing the refined cotton, and packaging them after they are qualified.

2. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: In step S2, let the equipment run idle for 20 minutes to check whether there is obvious swing or vibration of the machine body. All operating parts should run smoothly without abnormal noise. After the equipment runs normally, start feeding. When feeding, the cotton linters are placed neatly to ensure uniform feeding. After feeding, the cotton linters are opened.

3. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: In step S3, the mixing and stirring is performed by adding water into a stirring container, slowly adding sodium hydroxide and sodium carbonate, stirring while adding until completely dissolved, adding anthraquinone and 2-methylanthraquinone, adding them to the solution, continuing to stir to fully mix them, using a pH meter to detect the pH value of the solution, adding acid or alkali to adjust according to the pH value, adding amino acid salts to the solution, and continuing to stir until completely dissolved to prepare a cooking agent; in step S4, the cooking step is performed by putting cotton linters into a cooking pot for cooking, adding the prepared cooking agent to the cooking equipment through a pipeline, heating the cooking pot for heating and cooking, maintaining the pressure and insulation time, and during the insulation and pressure holding process, the cooking agent reacts with cellulose, hemicellulose and lignin in the cotton linters, and after the cooking is completed, the steam is released from the cooking pot and the cooked cotton linters are taken out.

4. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: In step S5, the beating time of the pulping machine is 2 hours, and the speed of the pulping machine is 200 r / min. During the beating process, the fibers in the cotton linters are refined and dispersed, resulting in physical changes.

5. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: In step S6, the filtering device is selected as a pressure filter, and the parameters of the pressure filter are adjusted to evenly place the pulped cotton linters into the filtering device for filtering, and the filtered pure cotton pulp is collected into a container. After the filtering is completed, the filtering device is cleaned to remove residual impurities and solid particles, and the equipment is maintained.

6. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: The centrifuge in step S7 is a butterfly centrifuge; in step S8, the microbial combination is selected by collecting microorganisms with lignin degradation ability from strains preserved in nature, strain banks and laboratories, including bacteria and fungi, and preliminarily screening out microorganisms capable of producing ligninase through plate culture and liquid shake flask fermentation methods. Further rescreening is performed to select strains with high enzyme activity and good stability, and the screened different strains are combined. Through multi-species coupled fermentation experiments, the effects of different combinations on the degradation of cotton lint are evaluated, and the optimal microbial combination is selected, and the microbial combination is a high-yield ligninase of White Capsule Rake Tooth Fungus and Birch Porphyra.

7. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: In step S8, coupled fermentation is carried out by designing culture medium components, which include carbon source, nitrogen source, inorganic salt and growth factor. The culture medium is sterilized at high temperature. The fermentation time is 7 days. During the fermentation process, the metabolism of microorganisms is promoted by stirring. The fermentation time of cotton linters is 10 days, and impurities in cotton linters are treated by microorganisms.

8. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: In step S9, the elemental chlorine-free bleaching is carried out by treating the cotton linters under alkaline conditions to dissolve and remove lignin and other impurities, which lays the foundation for subsequent bleaching. The cotton linters after alkali treatment are placed in a bleaching solution containing chlorine dioxide, and the strong oxidizing effect of chlorine dioxide is used to degrade lignin and other colored substances in the cotton linters for bleaching.

9. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: In step S10, the cotton linters are fully washed and dehydrated to remove residual bleach and other chemicals, and then dried. The drying temperature is 40° C. and the drying time is 5 minutes.

10. The highly efficient and optimized refined cotton processing and production method according to claim 1, characterized in that: The refined cotton detection in step S10 includes the detection of appearance, the detection of polymerization degree and the detection of cellulose content.

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