CN112211017A

CN112211017A - A kind of alkaline pulping method using coconut husk as raw material

Info

Publication number: CN112211017A
Application number: CN202011164744.9A
Authority: CN
Inventors: 管若伶; 张立晨; 贠子平; 黄逊伟; 雷方
Original assignee: Hainan Tropical Ocean University
Current assignee: Hainan Tropical Ocean University
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-01-12

Abstract

本发明公开了一种以椰子皮为原料的碱法制纸浆方法，包括如下步骤：步骤一、备料：将椰子皮打散将椰子壳去除，得到打散椰子皮；步骤二、晾晒：将打散椰子皮自然晾晒一到两天得到晾晒后椰子皮；步骤三、浸泡；步骤四、蒸煮；步骤五、洗涤：使用筛网过筛，将滤渣洗净除去木素以及残余试剂；步骤六、磨浆：将滤渣加入磨浆机磨浆得到纸浆；步骤七、打浆：将磨好的纸浆加入造纸胶，纸浆的干料与造纸胶的质量比为1000：3‑8；然后通过拍打将纸浆与水混合；步骤八、抄纸：利用40目抄网进行抄纸，烘干即得到椰子皮纸。本发明提供了一种以椰子皮为原料制作纸张的方法，有效的利用了椰子皮资源，将椰子皮充分利用，变废为宝，提高经济效益的同时降低了环境污染。The invention discloses an alkaline pulping method using coconut husk as a raw material. The coconut husk is naturally aired for one to two days to obtain the sun-dried coconut husk; step 3, soaking; step 4, cooking; step 5, washing: sieve with a mesh, wash the filter residue to remove lignin and residual reagents; step 6, grind Pulp: add the filter residue to the refiner for refining to obtain pulp; Step 7, beating: add the ground pulp to the papermaking glue, and the mass ratio of the dry material of the pulp to the papermaking glue is 1000:3-8; Mixing with water; Step 8, papermaking: utilize 40 mesh making nets to make paper, and dry to obtain coconut husk paper. The invention provides a method for making paper with coconut peel as raw material, effectively utilizes coconut peel resources, fully utilizes coconut peel, turns waste into treasure, improves economic benefit and reduces environmental pollution.

Description

Alkaline method for making paper pulp by using coconut peel as raw material

Technical Field

The invention belongs to the field of papermaking environmental protection, and particularly relates to an alkaline method for making paper pulp by using coconut peel as a raw material.

Background

The coconut comprises coconut juice, coconut, meat, coconut shell and coconut peel from inside to outside in sequence. The coconut meat and the coconut juice can be used as food, the coconut shell can be used as a carved product, and the coconut skin is generally discarded as waste, so that resources are wasted, and the environment is polluted. At present, no method for making paper pulp by using coconut husk as raw material is available in China.

Disclosure of Invention

In order to solve the problems, the invention discloses an alkaline method for making paper pulp by taking coconut husk as a raw material. The invention provides a method for making paper by taking coconut peel as a raw material, which effectively utilizes coconut peel resources, fully utilizes the coconut peel, changes waste into valuable, improves economic benefits and reduces environmental pollution.

In order to achieve the purpose, the technical scheme of the invention is as follows:

an alkaline method for making paper pulp by using coconut peels as a raw material comprises the following steps:

step one, preparing materials: breaking up the coconut peel to remove the coconut shell, thereby obtaining broken up coconut peel;

step two, airing: naturally airing the scattered coconut peel for one to two days to obtain the aired coconut peel;

step three, soaking: fully soaking the coconut peel by using NaOH solution for 24 +/-5 hours until lignin is separated from fibers;

step four, cooking: steaming and boiling for 3-5 hours at 150-180 ℃;

step five, washing: sieving with a screen, and cleaning the filter residue to remove lignin and residual reagent;

step six, grinding the pulp: adding the filter residue into a pulping machine and pulping to obtain paper pulp;

step seven, pulping: adding the ground paper pulp into papermaking adhesive, wherein the mass ratio of dry materials of the paper pulp to the papermaking adhesive is 1000: 3-8; then mixing the pulp with water by beating;

step eight, papermaking: and (5) papermaking by using a 40-mesh papermaking net, and drying to obtain the coconut husk paper.

In a further improvement, the NaOH solution in the third step is a 1% NaOH solution.

In a further improvement, in the fifth step, the screen is a 40-mesh screen.

And in the sixth step, the filter residue is added into a pulping machine to be circularly ground for 5 times to obtain paper pulp.

The silver-containing composite adsorption film prepared by the alkaline pulping method taking coconut peel as the raw material is used for adsorbing bromide ions.

The invention has the advantages that:

the invention provides a method for making paper by taking coconut peel as a raw material, which effectively utilizes coconut peel resources, fully utilizes the coconut peel, changes waste into valuable, improves economic benefits and reduces environmental pollution.

Detailed Description

The present invention is further illustrated by the following examples.

Examples

step three, soaking: fully soaking the coconut peel by using 1% NaOH solution for 24 +/-5 hours until lignin is separated from fibers;

step four, cooking: steaming and boiling the mixture in a 1% NaOH solution at 150-180 ℃ for 3-5 hours;

step five, washing: sieving with 40 mesh sieve, cleaning the residue to remove lignin and residual reagent;

step six, grinding the pulp: adding the filter residue into a pulping machine, and circularly pulping for 5 times to obtain paper pulp;

While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the invention is intended, and further modifications may readily be effected therein by those skilled in the art, without departing from the general concept defined by the claims and their equivalents, which are to be limited not to the specific details shown and described herein.

Claims

1. a kind of alkali process pulping method taking coconut husk as raw material, is characterized in that, comprises the steps:

Step 1. Preparation: Disperse the coconut husk and remove the coconut husk to obtain the smashed coconut husk;

Step 2. Drying: Naturally dry the scattered coconut skin for one to two days to obtain the coconut skin after drying;

Step 3, soaking: use NaOH solution to fully soak the coconut skin, the soaking time is 24±5h, until the lignin and fiber are separated;

Step 4. Cooking: Cooking at 150~180℃ for 3~5 hours;

Step 5. Washing: sieve with a mesh, and wash the filter residue to remove lignin and residual reagents;

Step 6. Refining: adding the filter residue to the refiner for refining to obtain pulp;

Step 7. Beating: adding the ground pulp to the papermaking glue, the mass ratio of the dry material of the pulp to the papermaking glue is 1000:3-8; then mixing the pulp and water by beating;

Step 8, papermaking: utilize 40 mesh making net to carry out papermaking, and dry to obtain coconut husk paper.

2. the alkali process pulping method that takes coconut husk as raw material as claimed in claim 1, is characterized in that, the NaOH solution in described step 3 is 1%NaOH solution.

3. the alkali process pulping method that takes coconut husk as raw material as claimed in claim 1, is characterized in that, in described step 5, screen is 40 mesh screen.

4. The alkali-processed pulping method using coconut husk as a raw material as claimed in claim 1, wherein in the step 6, the filter residue is added to the refiner for 5 times of circulating refining to obtain pulp.