Pulping equipment and method for coconut shell papermaking

Abstract

The invention relates to the technical field of papermaking, and discloses a pulping device and method for coconut shell papermaking, and the method comprises the following steps: obtaining brown coconut shred fiber powder of mature coconuts and white coconut shred fiber powder of immature coconuts, respectively removing lignin to obtain a brown coconut shred pretreatment product and a white coconut shred pretreatment product, carrying out modification treatment, and mixing to obtain the coconut shell pulp. And fumigating at 120-150 DEG C to obtain fiber pulp, mixing the fiber pulp with an additive, grinding, and dehydrating to obtain the paper pulp. The coconut shells are used as raw materials, a new raw material source is provided for the papermaking industry, the problem of treatment of coconut shell waste is solved, and the method has the dual advantages of environmental protection and sustainable development. By means of the pulping equipment and method, paper products stable in quality and high in strength can be produced, and the requirements of different industrial and household paper are met.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking, and in particular to a pulping device and method for coconut shell papermaking. Background Art

[0002] With the rapid development of society and economy, the utilization and development of green renewable biomass has attracted increasing attention. However, how to effectively separate biomass resources to maximize their utilization is still a challenge that needs to be solved urgently. In the papermaking industry, the traditional wood pulp production method not only causes huge consumption of forest resources, but also is accompanied by environmental pollution problems. Therefore, it is particularly important to develop a new and environmentally friendly papermaking raw material.

[0003] Coconut shell, as a byproduct of coconut fruit, is not only abundant in reserves, but also cheap and versatile. As a renewable biomass resource, coconut shell contains a high proportion of cellulose and has good mechanical strength and chemical stability, making it one of the ideal raw materials for making pulp. However, due to the unique structure and composition of coconut shell, there are still some technical difficulties in using it directly for papermaking. Summary of the invention

[0004] In view of this, the present invention proposes a coconut shell papermaking pulping device and method, aiming to provide an environmentally friendly and efficient coconut shell pulping process.

[0005] The present invention provides a coconut shell papermaking pulping method, comprising:

[0006] Obtaining coconut fiber powder from mature coconuts and immature coconuts respectively, wherein the coconut fiber powder from the mature coconuts is brown coconut fiber powder, and the coconut fiber from the immature coconuts is white coconut fiber powder;

[0007] Respectively removing lignin from the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product;

[0008] The brown coconut shreds pretreatment product and the white coconut shreds pretreatment product are modified to obtain a brown coconut shreds modified product and a white coconut shreds modified product respectively;

[0009] The brown coconut shred modified product and the white coconut shred modified product are mixed and fumigated at 120-150° C. to obtain fiber slurry; the fiber slurry is mixed with additives and then refined and dehydrated to obtain paper pulp.

[0010] Preferably, removing lignin from the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product comprises:

[0011] The brown coconut fiber powder is soaked in an alkaline solution for alkaline chemical treatment and then subjected to steam explosion treatment to obtain the brown coconut fiber pretreatment product; wherein the step of steam explosion treatment comprises heating the brown coconut fiber powder after alkaline chemical treatment to 180-220° C. in a sealed container, applying high-pressure steam, maintaining the high pressure for 1-2 minutes and then releasing the pressure;

[0012] The white coconut fiber powder is enzymatically hydrolyzed by biological enzymes and then subjected to low-temperature extraction to obtain the white coconut fiber pretreatment product.

[0013] Preferably, the alkaline solution is a sodium hydroxide solution with a concentration of 10-15%.

[0014] Preferably, the alkaline chemical treatment is to soak the brown coconut fiber powder in a sodium hydroxide solution at a temperature of 80-100° C. for 2-4 hours.

[0015] Preferably, the biological enzyme is laccase.

[0016] Preferably, the conditions for the enzymatic hydrolysis include a temperature of 30-50° C., a pH value of 5.0-7.0, and a time of 8-12 hours.

[0017] Preferably, the solvent for the low-temperature extraction is an ethanol-water mixed solvent.

[0018] Preferably, the low-temperature extraction is carried out at a temperature of 50-60° C. for 2-3 hours.

[0019] Preferably, the brown coconut shreds pretreatment product and the white coconut shreds pretreatment product are modified to obtain the brown coconut shreds modified product and the white coconut shreds modified product, respectively, comprising:

[0020] The brown coconut shreds pretreatment product and epoxy resin are mixed and dispersed, and then heated at 60-80° C. for at least 2 hours for cross-linking to obtain the brown coconut shreds modified product;

[0021] The white coconut shreds pre-treated product and titanium dioxide are mixed and dispersed, and then placed in a polyvinyl alcohol aqueous solution and heated for at least 1 hour to obtain the white coconut shreds modified product.

[0022] Preferably, when the brown coconut shreds modified product and the white coconut shreds modified product are mixed and fumigated at 120-150° C., the fumigation liquid is a mixed solution of coconut water and rice vinegar.

[0023] Preferably, the concentration of the rice vinegar is 4%-7%.

[0024] Preferably, the additives are polyvinyl alcohol, cellulose ether, fluoride additives and talc.

[0025] Preferably, the weight ratio of the polyvinyl alcohol, cellulose ether, fluoride additive and talcum powder is 1-5:0.5-3:0.1-2:5-10.

[0026] Preferably, the weight ratio of the fiber slurry to the additive is 8-10:1.

[0027] The present invention also provides a paper pulp, which is prepared by the above-mentioned coconut shell papermaking pulping method.

[0028] The invention also provides an application of the pulp in papermaking.

[0029] The present invention also provides a coconut shell papermaking pulping device, which is used to implement the above-mentioned coconut shell papermaking pulping method, comprising:

[0030] A raw material processing unit, for crushing the coconut shreds of mature coconuts and immature coconuts to obtain brown coconut shreds fiber powder and white coconut shreds fiber powder;

[0031] A pretreatment unit, used to remove lignin from the brown coconut fiber powder and the white coconut fiber powder, respectively, to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product;

[0032] The pretreatment unit pretreats the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut pretreatment product and a white coconut pretreatment product;

[0033] A modification treatment unit, used for performing modification treatment on the brown coconut shreds pretreatment product and the white coconut shreds pretreatment product respectively to obtain a brown coconut shreds modified product and a white coconut shreds modified product;

[0034] A fumigation unit, used for fumigating the brown coconut shreds modified product and the white coconut shreds modified product after mixing them;

[0035] The mixing and refining unit is used for mixing the fumigated fiber slurry with additives, and then refining and dehydrating the mixture to obtain paper pulp.

[0036] Preferably, the pretreatment unit comprises an alkaline chemical treatment device, a steam explosion device, an enzymatic hydrolysis device and a low-temperature extraction device; the alkaline chemical treatment device is used to soak the brown coconut fiber powder in an alkaline solution for alkaline chemical treatment, the steam explosion device is used to perform steam explosion treatment; the enzymatic hydrolysis device is used to perform enzymatic hydrolysis on the white coconut fiber powder; the low-temperature extraction device is used to perform low-temperature extraction treatment;

[0037] The modification treatment unit comprises a mixing and dispersing device and a heating device; the mixing and dispersing device and the heating device are used to mix and disperse the brown coconut shreds pre-treated product with epoxy resin and then heat it for cross-linking; the mixing and dispersing device and the heating device are also used to mix and disperse the white coconut shreds pre-treated product with titanium dioxide and then place it in a polyvinyl alcohol aqueous solution for heating;

[0038] The fumigation unit comprises a fumigation tank for fumigating the mixed product.

[0039] Preferably, the coconut shell papermaking pulping equipment further comprises a control system;

[0040] The control system is used to control the operation of the raw material processing unit, the pretreatment unit, the modification processing unit, the fumigation unit and the mixing and refining unit.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. High resource utilization rate: By utilizing the coconut shreds of mature and immature coconuts, the full utilization of coconut shells is achieved, reducing resource waste.

[0044] 2. Strong environmental protection: The use of biological enzymes and natural materials (such as rice vinegar and coconut water) for treatment reduces dependence on chemical agents and reduces environmental pollution.

[0045] 3. Improve paper performance: Through innovative modification treatment methods, the tensile strength, tear strength and waterproof performance of paper are enhanced, and the quality and applicability of paper products are improved.

[0046] 4. Process simplification: The equipment design integrates multiple steps into one, improves production efficiency, reduces production costs, and adapts to the needs of industrial large-scale production.

[0047] 5. Diversity and adjustability: By adjusting the proportion of raw materials and the type of additives, paper products with different performance and uses can be flexibly produced according to market demand to meet diverse consumer needs.

[0048] In summary, the present invention has significant advantages in resource utilization, environmental friendliness, paper performance and production efficiency, and has promoted the development of sustainable papermaking technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0050] Figure 1 It is a schematic diagram of the pulping equipment for coconut shell papermaking of the present invention. DETAILED DESCRIPTION

[0051] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] Embodiment 1 Coconut shell papermaking pulping method

[0053] 1. How to obtain coconut fiber powder

[0054] 1. Choose raw materials

[0055] Mature coconut: Choose coconuts with brown or yellow shells and hard, thick flesh.

[0056] Unripe coconuts: Choose coconuts with a green shell and tender, thin flesh.

[0057] 2. Remove the shell and take out the meat

[0058] Husking: Use a knife or machine to remove the outer shell of the coconut.

[0059] Remove the coconut flesh: Remove the coconut flesh from the inside of the coconut.

[0060] 3. Cleaning and drying

[0061] Washing: Wash the removed coconut meat to remove coconut shell residue and other impurities.

[0062] Drying: Place the cleaned coconut meat in a dryer to remove moisture.

[0063] 4. Grinding

[0064] Grind: Grind the dried coconut meat into a fine powder.

[0065] The particle sizes of the brown coconut fiber powder and the white coconut fiber powder are 0.1-0.5 mm and 0.05-0.2 mm respectively.

[0066] 2. Pulping process

[0067] 1. Remove lignin

[0068] 1.1 Delignification method of brown coconut fiber powder

[0069] Brown coconut fiber powder comes from mature coconuts. The fiber is relatively coarse and hard, and the lignin content is relatively high. It requires an efficient delignification method:

[0070] Alkaline chemical method: Soak the brown coconut fiber powder in a sodium hydroxide (NaOH) solution with a concentration of 10% and a temperature of 85±3℃ for about 2 hours. This method can effectively destroy the lignin structure in the brown fiber, dissolve and remove a large amount of lignin, while retaining the toughness and strength of the fiber.

[0071] Assisted steam explosion method: After the alkaline chemical treatment, further steam explosion treatment is carried out. The brown coconut fiber treated with alkali is quickly heated to 200°C in a closed container, and high-pressure steam is applied. After maintaining the high pressure for 2 minutes, the pressure is quickly released to form a "blasting" effect.

[0072] 1.2 Delignification method of white coconut fiber powder

[0073] White coconut fiber powder comes from immature coconuts. Its fibers are finer and softer, and its lignin content is relatively low, so it is suitable for gentle delignification methods:

[0074] Bio-enzyme method: Use lignin-degrading enzyme (laccase) to treat white coconut fiber powder. The process temperature is controlled at 40±3℃, pH value is 6.0±0.2, and the time is 9 hours. Laccase can specifically decompose the lignin in white coconut fiber without destroying the cellulose structure of the fiber. This method is environmentally friendly and gentle, and can effectively remove lignin and maintain the softness and fineness of the fiber.

[0075] Low-temperature solvent extraction method: To improve the delignification effect, after enzyme treatment, ethanol-water mixed solvent (volume ratio 1:1) is further used for low-temperature extraction, the temperature is controlled at 55±3℃, and the treatment lasts for 2 hours. The solvent can dissolve the residual lignin while retaining the mechanical properties of the fiber.

[0076] 2. Modification treatment

[0077] 2.1 Modification method of brown coconut shreds pretreatment product

[0078] Brown coconut shreds are suitable for enhanced modification due to their high strength and toughness:

[0079] Cross-linked polymer modification method: The brown coconut fiber pretreatment product is mixed with a modifier (epoxy resin) and evenly dispersed by mechanical stirring. Then, it is heated at 60-80°C for 2-3 hours to promote the cross-linking reaction between the polymer and the hydroxyl groups in the coconut fiber to form a three-dimensional network structure. This method can significantly improve the strength and water resistance of brown coconut fiber, making it perform better in pulp.

[0080] 2.2 Modification method of white coconut shreds pretreatment product

[0081] White coconut fiber is finer and is suitable for gentle modification methods to enhance its properties:

[0082] Nanomaterial modification method: The pre-treated white coconut shreds were mixed with nano-scale titanium dioxide and ultrasonic dispersion was used to ensure uniform dispersion. The process was carried out at room temperature and lasted for 30 minutes. The introduction of nanomaterials not only improved the strength of white coconut shreds, but also gave them photocatalytic properties, which contributed to the subsequent antifouling and antibacterial properties of paper.

[0083] Polymer coating method: Place the nano-modified white coconut shreds in a polyvinyl alcohol (PVA) aqueous solution, stir evenly, and heat at 65±3°C to form a coating layer on the fiber surface. This step lasts for 1 hour to ensure that the polymer is evenly coated on the surface of the white coconut shreds. This coating method can not only improve the surface smoothness of the white coconut shreds, but also enhance its water resistance and UV resistance.

[0084] The above-mentioned different modification methods can effectively improve the performance of brown and white coconut shreds. Brown coconut shreds are modified by cross-linking polymers and natural plant extracts to enhance their mechanical properties and antibacterial properties, while white coconut shreds are coated with nanomaterials and polymers to enhance their strength and other functional characteristics. This innovative modification scheme lays a good foundation for subsequent pulp preparation.

[0085] 3. Fumigation

[0086] The brown coconut shreds modified product and the white coconut shreds modified product were mixed in a weight ratio of 60:40 and fumigated. The fumigation liquid was a mixed solution of coconut water and rice vinegar in a volume ratio of 3:1.

[0087] The fumigation liquid is heated to 130±5℃ and fumigated for 2 hours. During this process, the minerals in coconut water and the acidic components of rice vinegar can interact with each other, promote the structural stability of the fiber, and form a more solid fiber network structure. The acidic and electrolyte properties of the fumigation liquid can effectively activate the functional groups of the modified product, enhance its bonding force and interaction force, and make the modified fiber show better comprehensive performance in pulp.

[0088] 4. Refining

[0089] The fiber slurry obtained after fumigation is mixed with an additive in a weight ratio of 9:1 to obtain a slurry to be ground, wherein the additive is polyvinyl alcohol, cellulose ether, fluoride additive and talcum powder in a weight ratio of 3:1:0.5:5.

[0090] The slurry to be refined was sent to a high shear refiner and refined at a speed of 4000 rpm for 0.5 h. During the refining process, the slurry temperature was maintained in the range of 40-60° C. and the temperature was adjusted by adding a small amount of water.

[0091] 5. Dehydration

[0092] The refined pulp is transferred to a vacuum dehydrator and vacuum is applied to evaporate the water rapidly under low pressure, so that the moisture content of the final pulp is between 40±3%.

[0093] Example 2

[0094] The specific preparation method is the same as that in Example 1, except that the weight ratio of the brown coconut shreds modified product to the white coconut shreds modified product is 50:50.

[0095] Example 3

[0096] The specific preparation method is the same as that in Example 1, except that the weight ratio of the brown coconut shreds modified product to the white coconut shreds modified product is 70:30.

[0097] Test Example 1

[0098] The pulp prepared in Examples 1-3 is used to make paper, and the specific steps include:

[0099] 1. Papermaking steps

[0100] 1. Slurry preparation

[0101] The treated pulp is mixed with water in proportion to prepare a pulp suspension with a concentration of 2%.

[0102] 2. Molding

[0103] The slurry is poured into a forming machine, and excess water is removed by gravity and vacuum extraction, so that the slurry is evenly spread into wet paper.

[0104] 3. Pressing

[0105] A press is used to apply pressure to the wet paper to further remove moisture and increase the density of the paper.

[0106] 4. Drying

[0107] The wet paper is passed through a dryer to dry it until the moisture content of the paper is reduced to 5%.

[0108] 5. Arrangement and cutting

[0109] The dried paper is leveled, sorted, and cut into required specifications to facilitate subsequent testing and application.

[0110] 2. Preparation of paper with different ratios of modified products

[0111] According to the ratio of the modified brown coconut shreds to the modified white coconut shreds, the following three kinds of paper were prepared:

[0112] 1. Paper A: brown coconut shreds modified product: white coconut shreds modified product = 60:40;

[0113] 2. Paper B: brown coconut shreds modified product: white coconut shreds modified product = 50:50;

[0114] 3. Paper C: brown coconut shreds modified product: white coconut shreds modified product = 70:30.

[0115] 3. Performance Testing and Characterization

[0116] The properties of the three types of paper were tested and characterized, with the main test indicators including tensile strength, tear strength, whiteness and thickness.

[0117] Detection method:

[0118] 1. Tensile strength: Use an electronic tensile testing machine to measure the maximum load-bearing capacity of paper during stretching, in N / m.

[0119] 2. Tear strength: A tear strength tester is used to measure the force required for paper to tear, in mN.

[0120] 3. Whiteness: Use a whiteness meter to measure the reflected light intensity of the paper, the unit is ISO whiteness.

[0121] 4. Thickness: Use a thickness gauge to measure the thickness of the paper in millimeters (mm).

[0122] The experimental data are shown in Table 1:

[0123] Table 1

[0124]

[0125]

[0126] Result analysis:

[0127] 1. Tensile strength: Paper C had the highest tensile strength, indicating that a higher proportion of brown coconut fiber modified products enhanced the strength of the paper.

[0128] 2. Tear strength: Paper C has the best tear strength performance, indicating that it is more tear-resistant and suitable for packaging materials with higher requirements.

[0129] 3. Whiteness: Paper C has the highest whiteness and is suitable for applications with high requirements on appearance.

[0130] 4. Thickness: Paper C is slightly thicker, which may be related to the fact that it contains more brown coconut shredded modified products, which can increase the volume and feel of the paper to a certain extent.

[0131] In summary, the coconut shell papermaking technology of the present invention has the following advantages:

[0132] Using coconut shells as raw materials not only achieves the recycling of waste resources, but also reduces dependence on traditional papermaking raw materials such as wood, which contributes to environmental protection and sustainable development.

[0133] Through modification, the performance of coconut shreds is improved, giving paper additional functional characteristics such as antibacterial properties, photocatalytic properties, water resistance and UV resistance, which broadens the application range of paper.

[0134] The prepared paper has excellent performance in tensile strength, tear strength, whiteness and thickness, meeting the requirements of paper performance in different fields.

[0135] The embodiments and test examples of this technology show that by adjusting the ratio of modified products of brown coconut shreds and white coconut shreds, the properties of the final paper can be flexibly controlled, which provides the possibility for customized production of paper.

[0136] The innovation of this technology lies in the combination of traditional papermaking technology and modern material modification technology, providing new ideas and methods for the development of new environmentally friendly paper materials.

[0137] At the same time, it is understood that the above method can be carried out by a coconut shell papermaking pulping device, the coconut shell papermaking pulping device (such as Figure 1 shown) include:

[0138] A raw material processing unit, for crushing the coconut shreds of mature coconuts and immature coconuts to obtain brown coconut shreds fiber powder and white coconut shreds fiber powder;

[0139] A pretreatment unit is used to remove lignin from the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product; the pretreatment unit pretreats the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product;

[0140] A modification treatment unit, used for performing modification treatment on the brown coconut shreds pretreatment product and the white coconut shreds pretreatment product respectively to obtain a brown coconut shreds modified product and a white coconut shreds modified product;

[0141] A fumigation unit, used for fumigating the brown coconut shreds modified product and the white coconut shreds modified product after mixing them;

[0142] A mixing and refining unit, used for mixing the fumigated fiber slurry with additives, refining and dehydrating the mixture to obtain paper pulp;

[0143] The control system is used to control the operation of the raw material processing unit, the pretreatment unit, the modification processing unit, the fumigation unit and the mixing and refining unit.

[0144] The pretreatment unit includes an alkaline chemical treatment device, a steam explosion device, an enzymatic hydrolysis device and a low-temperature extraction device; the alkaline chemical treatment device is used to soak the brown coconut fiber powder in an alkaline solution for alkaline chemical treatment, the steam explosion device is used to perform steam explosion treatment; the enzymatic hydrolysis device is used to perform enzymatic hydrolysis on the white coconut fiber powder; the low-temperature extraction device is used to perform low-temperature extraction treatment;

[0145] The modification treatment unit comprises a mixing and dispersing device and a heating device; the mixing and dispersing device and the heating device are used to mix and disperse the brown coconut shreds pre-treated product with epoxy resin and then heat it for cross-linking; the mixing and dispersing device and the heating device are also used to mix and disperse the white coconut shreds pre-treated product with titanium dioxide and then place it in a polyvinyl alcohol aqueous solution for heating;

[0146] The fumigation unit comprises a fumigation tank for fumigating the mixed product.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A coconut shell papermaking pulping method, characterized in that: include: Obtaining coconut fiber powder from mature coconuts and immature coconuts respectively, wherein the coconut fiber powder from the mature coconuts is brown coconut fiber powder, and the coconut fiber from the immature coconuts is white coconut fiber powder; Respectively removing lignin from the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product; The brown coconut shreds pretreatment product and the white coconut shreds pretreatment product are modified to obtain a brown coconut shreds modified product and a white coconut shreds modified product respectively; The brown coconut shred modified product and the white coconut shred modified product are mixed and fumigated at 120-150° C. to obtain fiber slurry; the fiber slurry is mixed with additives and then refined and dehydrated to obtain paper pulp.

2. The coconut shell papermaking pulping method according to claim 1, characterized in that: Removing lignin from the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product comprises: The brown coconut fiber powder is soaked in an alkaline solution for alkaline chemical treatment and then subjected to steam explosion treatment to obtain the brown coconut fiber pretreatment product; wherein the step of steam explosion treatment comprises heating the brown coconut fiber powder after alkaline chemical treatment to 180-220° C. in a sealed container, applying high-pressure steam, maintaining the high pressure for 1-2 minutes and then releasing the pressure; The white coconut fiber powder is enzymatically hydrolyzed by biological enzymes and then subjected to low-temperature extraction to obtain the white coconut fiber pretreatment product.

3. The coconut shell papermaking pulping method according to claim 1, characterized in that: The brown coconut shreds pretreatment product and the white coconut shreds pretreatment product are modified to obtain the brown coconut shreds modified product and the white coconut shreds modified product, respectively, comprising: The brown coconut shreds pretreatment product and epoxy resin are mixed and dispersed, and then heated at 60-80° C. for at least 2 hours for cross-linking to obtain the brown coconut shreds modified product; The white coconut shreds pre-treated product and titanium dioxide are mixed and dispersed, and then placed in a polyvinyl alcohol aqueous solution and heated for at least 1 hour to obtain the white coconut shreds modified product.

4. The coconut shell papermaking pulping method according to claim 1, characterized in that: When the brown coconut shreds modified product and the white coconut shreds modified product are mixed and fumigated at 120-150° C., the fumigation liquid is a mixed solution of coconut water and rice vinegar.

5. The coconut shell papermaking pulping method according to claim 1, characterized in that: The additives are polyvinyl alcohol, cellulose ether, fluoride additives and talc.

6. A pulp, characterized in that: The pulp is prepared by the coconut shell papermaking pulping method according to any one of claims 1 to 5.

7. Use of the pulp according to claim 6 in papermaking.

8. A coconut shell papermaking pulping device, used to implement the coconut shell papermaking pulping method according to any one of claims 1 to 5, characterized in that: include: A raw material processing unit, for crushing the coconut shreds of mature coconuts and immature coconuts to obtain brown coconut shreds fiber powder and white coconut shreds fiber powder; A pretreatment unit, used to remove lignin from the brown coconut fiber powder and the white coconut fiber powder, respectively, to obtain a brown coconut fiber pretreatment product and a white coconut fiber pretreatment product; The pretreatment unit pretreats the brown coconut fiber powder and the white coconut fiber powder to obtain a brown coconut pretreatment product and a white coconut pretreatment product; A modification treatment unit, used for performing modification treatment on the brown coconut shreds pretreatment product and the white coconut shreds pretreatment product respectively to obtain a brown coconut shreds modified product and a white coconut shreds modified product; A fumigation unit, used for fumigating the brown coconut shreds modified product and the white coconut shreds modified product after mixing them; The mixing and refining unit is used for mixing the fumigated fiber slurry with additives, and then refining and dehydrating the mixture to obtain paper pulp.

9. The coconut shell papermaking pulping equipment according to claim 8, characterized in that: The pretreatment unit includes an alkaline chemical treatment device, a steam explosion device, an enzymatic hydrolysis device and a low-temperature extraction device; the alkaline chemical treatment device is used to soak the brown coconut fiber powder in an alkaline solution for alkaline chemical treatment, the steam explosion device is used to perform steam explosion treatment; the enzymatic hydrolysis device is used to perform enzymatic hydrolysis on the white coconut fiber powder; the low-temperature extraction device is used to perform low-temperature extraction treatment; The modification treatment unit comprises a mixing and dispersing device and a heating device; the mixing and dispersing device and the heating device are used to mix and disperse the brown coconut shreds pre-treated product with epoxy resin and then heat it for cross-linking; the mixing and dispersing device and the heating device are also used to mix and disperse the white coconut shreds pre-treated product with titanium dioxide and then place it in a polyvinyl alcohol aqueous solution for heating; The fumigation unit comprises a fumigation tank for fumigating the mixed product.

10. The coconut shell papermaking pulping equipment according to claim 8, characterized in that: The coconut shell papermaking pulping equipment also includes a control system; The control system is used to control the operation of the raw material processing unit, the pretreatment unit, the modification processing unit, the fumigation unit and the mixing and refining unit.

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