WO2016106473A1

WO2016106473A1 - Pulp made using spirogyra and preparation method therefor

Info

Publication number: WO2016106473A1
Application number: PCT/CN2014/001193
Authority: WO
Inventors: 林琦潍
Original assignee: 沈爱云
Priority date: 2014-12-31
Filing date: 2014-12-31
Publication date: 2016-07-07

Abstract

A pulp made by using Spirogyra and a preparation method therefor, which belong to the technical field of papermaking. With regard to the method, Spirogyra is used as a raw material and a pulp is obtained by the working processes of crushing, bleaching, beating, washing etc. By the method, timber resources are greatly saved and the forest resources protected. The raw material used, Spirogyra, mostly lives in fresh water, and the growth of Spirogyra itself can have the effect of purifying water quality and beautifying the environment. Since during the process for making pulp there is no working process of cooking and a working process of washing is saved, the energy is saved, the use of a large number of reagents is reduced, the precious water resources are saved, and meanwhile the production of sewage is eradicated and environmental contamination is effectively prevented.

Description

Pulp made from water cotton and manufacturing method thereof

Technical field

The invention relates to a pulp and a manufacturing method thereof, in particular to a pulp prepared by using water sponge and a manufacturing method thereof, and belongs to the technical field of papermaking.

Background technique

Pulp is processed from certain plants and is the basic raw material for papermaking. Plants commonly used for pulping materials can be classified into four broad categories: stem fibers, bast fibers, hair fibers, and wood fibers. Among them, wood fiber is the most important. At present, China's timber resources are far from meeting the needs of the growing pulp and paper industry. Of course, this is also a worldwide problem. In addition, in the pulp manufacturing process, whether using wood fiber or herb fiber, a large amount of chemicals are used, a large amount of water is needed, and a large amount of energy is consumed, and a large amount of toxic and harmful substances and sewage are generated. The environment caused serious damage.

In order to solve the drawbacks of the high cost of resources and energy, and serious environmental pollution in the traditional papermaking. The invention relates to the use of water cotton grown in fresh water as a raw material for making pulp.

There are about 6,700 species of green algae. The proportion of photosynthetic pigments is similar to that of seed plants and other higher plants. Typical green algae cells may or may not be active. It has a central vacuole, and the pigment is in the plastid, and the shape of the plastid varies depending on the type. The cell wall consists of two layers of cellulose and pectin. The food is stored in the form of starch in the nucleus of the plastid. Chlorella grows in fresh water, often attached to submerged rocks and wood, or floats on the surface of stagnant water; there are also species that live in soil or seawater, which is the source of aquatic animals' food or oxygen.

Spirogyra belongs to the genus Chlorophyta, the genus Algae, the genus Spirogyma, and the genus Spirogyra. Sponge The algal body is an unbranched filamentous body formed by a column of cylindrical cells. Since the surface of the algae has more pectin, it is sticky and slippery when touched by hand. Under the microscope, it can be seen that there are one or more banded leaf margins in each cell, which are spirally wound around the cytoplasm in the cell wall, and have a column of protein nuclei on the chloroplast. There is a large vacuole in the center of the cell. One cell nucleus is located in a mass of cytoplasm in the center of the vacuole. There are a number of radial cytoplasmic filaments connected between the cytoplasm surrounding the nucleus and the cytoplasm surrounding the cell wall.

The invention relates to the use of cotton wool grown in fresh water as a raw material for making pulp. The use of cotton wool as a raw material to make pulp can save the two steps of cooking and washing in the traditional pulp manufacturing process, while cooking is the most energy-consuming process in the pulp manufacturing process, and washing is a waste of water in the pulp manufacturing process. And the main link in the production of wastewater. The pulp prepared by using the cotton wool of the invention and the manufacturing method thereof can greatly save the wood resources and protect the forest resources; since the pulping process of the invention does not have a cooking process, the energy is saved to a large extent; In the process of pulp, a washing process is also omitted, which reduces the use of a large number of medicines, saves valuable water resources, and also eliminates the generation of sewage, effectively preventing environmental pollution; in addition, the raw materials used in the present invention Water cotton, most of which live in fresh water, the growth of water cotton itself can play a role in purifying water and beautifying the environment. The use of cotton wool as a raw material to make pulp is in line with the needs of establishing resource-saving countries.

Summary of the invention

The technical solution adopted by the present invention to solve the technical problem thereof is: a pulp obtained by using water sponge, characterized in that the raw material for making pulp is aquatic plant sponge.

A method of using pulp made from cotton wool, the steps of which are:

(1) chopping the water sponge, the length of the minced cotton is less than 50 mm;

(2) placing the shredded water sponge in step (1) in a container, adding a bleaching solution to the container, and bleaching the water sponge;

(3) beating the bleached cotton wool in step (2) to ensure complete dissolution of the lignin in the cotton wool and The water cotton fiber is completely bleached;

(4) washing the water-spun fiber slurry after the beating after step (3) to remove the bleaching solution and lignin therein;

(5) The water-spun fiber slurry after the step (4) is dehydrated to have a water content of less than 35%, that is, a pulp is prepared.

Preferably, the length of the shredded water sponge in the step (1) is 0.2-10 mm.

Preferably, the bleaching solution used in the step (2) is a hydrogen peroxide solution having a solution concentration of 70% to 85%, a bleaching time of 60 to 120 minutes, and a bleaching temperature of 35 to 50 degrees Celsius.

Preferably, the bleaching solution used in the step (2) is a chlorine dioxide solution.

Preferably, in the step (5), the water content of the cotton wool fiber pulp after dehydration is 25% to 33%.

The invention relates to a pulp made by using water sponge and a manufacturing method thereof, which greatly saves wood resources and protects forest resources; since the present invention does not have a cooking process in the process of manufacturing pulp, the energy is saved to a large extent; Since the washing process is omitted in the process of manufacturing the pulp of the invention, the use of a large amount of medicines is reduced, valuable water resources are saved, and the generation of sewage is also eliminated, thereby effectively preventing environmental pollution; Most of the raw water sponges used are in fresh water, and the growth of the water cotton itself can purify the water and beautify the environment. The use of cotton wool as a raw material to make pulp is in line with the needs of establishing resource-saving countries.

DRAWINGS

The invention will now be further described with reference to the drawings and embodiments.

1 is a process flow diagram of a method of using pulp made from cotton wool according to the present invention;

Figure 2 is a flow chart of a conventional pulp production process;

detailed description

Embodiment 1 A pulp obtained by using cotton wool, characterized in that the raw material for making pulp is aquatic plant sponge.

A method of using pulp made from cotton wool, the steps of which are:

(1) chopping the water cotton, the length of the minced cotton is 49 mm;

(2) placing the shredded water sponge in step (1) in a container, adding a bleaching solution to the container, and bleaching the water cotton, the bleaching solution is a hydrogen peroxide solution, the concentration of the solution is 70%, bleaching The time is 120 minutes and the bleaching temperature is 50 degrees Celsius;

(3) beating the bleached cotton wool in step (2) to ensure that the essentials in the cotton wool are completely dissolved and the cotton wool fibers are completely bleached;

(5) The water wadding fiber slurry after the step (4) is dehydrated to have a water content of 25%, that is, a pulp is prepared.

Embodiment 2: A pulp obtained by using cotton wool, characterized in that the raw material for making pulp is aquatic plant sponge.

A method of using pulp made from cotton wool, the steps of which are:

(1) chopping the water sponge, the length of the minced cotton is 30 mm;

(2) placing the shredded water sponge in step (1) in a container, adding a bleaching solution to the container, and bleaching the water cotton, the bleaching solution is a hydrogen peroxide solution, and the concentration of the solution is 85%, bleaching The time is 60 minutes and the bleaching temperature is 42 degrees Celsius;

(3) beating the bleached cotton wool in step (2) to ensure complete dissolution of the lignin in the cotton wool and complete bleaching of the cotton wool fibers;

(5) The water wadding fiber slurry after the step (4) is dehydrated to have a water content of 28%, that is, a pulp is prepared.

Embodiment 3: A pulp obtained by using cotton wool, characterized in that the raw material for making pulp is aquatic plant sponge.

A method of using pulp made from cotton wool, the steps of which are:

(1) chopping the water sponge, the length of the minced cotton is 10 mm;

(2) placing the shredded water sponge in step (1) in a container, adding a bleaching solution to the container, and bleaching the water cotton, the bleaching solution is a hydrogen peroxide solution, the concentration of the solution is 78%, bleaching The time is 90 minutes and the bleaching temperature is 35 degrees Celsius;

(5) The water-spun fiber slurry after the step (4) was dehydrated to have a water content of 31%, that is, a pulp was prepared.

Embodiment 4: A pulp obtained by using cotton wool, characterized in that the raw material for making pulp is aquatic plant sponge.

A method of using pulp made from cotton wool, the steps of which are:

(1) chopping the water sponge, the length of the minced cotton is 0.2 mm;

(2) placing the shredded water sponge in step (1) in a container, adding a bleaching solution to the container, and bleaching the cotton wool, the bleaching solution being a chlorine dioxide solution;

(4) Washing the water-spun fiber slurry after the beating process in step (3) to remove the bleaching solution and Lignin

(5) The water wadding fiber slurry after the step (4) was dehydrated to have a water content of 33%, that is, a pulp was prepared.

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. The obvious changes or variations derived therefrom are still within the scope of protection created by the present invention.

Claims

A pulp obtained by using cotton wool, characterized in that the raw material for making pulp is aquatic plant sponge.
A method of using pulp made from cotton wool, characterized in that the steps are:

(1) chopping the water sponge, the length of the minced cotton is less than 50 mm;

(2) placing the shredded water sponge in step (1) in a container, adding a bleaching solution to the container, and bleaching the water sponge;

(3) beating the bleached cotton wool in step (2) to ensure complete dissolution of the lignin in the cotton wool and complete bleaching of the cotton wool fibers;

(4) washing the water-spun fiber slurry after the beating after step (3) to remove the bleaching solution and lignin therein;

(5) The water-spun fiber slurry after the step (4) is dehydrated to have a water content of less than 35%, that is, a pulp is prepared.
A method of using pulp made from cotton wool according to claim 2, wherein the length of the shredded water sponge in the step (1) is from 0.2 to 10 mm.
A method of using pulp made from cotton wool according to claim 2, wherein the bleaching solution used in the step (2) is a hydrogen peroxide solution, and the concentration of the solution is 70%-85%, bleaching The time is 60-120 minutes and the bleaching temperature is 35-50 degrees Celsius.
A method of using pulp made from cotton wool according to claim 2, wherein the bleaching solution used in the step (2) is a chlorine dioxide solution.
A method of using pulp made from cotton wool according to claim 2, wherein the water content of the cotton wool fiber pulp after the dehydration in the step (5) is from 25% to 33%.