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Hemp fibre filter wire and preparation method thereof

A technology of hemp fiber and filter thread, which is applied in the field of hemp fiber filter thread and its preparation, can solve the problems that glass fiber filter thread is harmful to human health, absorbent cotton filter thread is not corrosion-resistant cost, and restricts the development of purification and filtration industry, etc., so as to be easy to promote , light weight, strong effect

Inactive Publication Date: 2010-11-17
郭淼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Filter wire is an important material in water treatment. It is used to make wire-wound filter elements for precision purification and filtration of industrial liquids, electronics, medicine, food and domestic water. However, there are many shortcomings in the existing filter wires, which restrict the purification. Development of Filtration Industry
[0003] For a long time, the purification and filtration of industrial liquids, medicine, food, and domestic water have been made of polypropylene filter wires, absorbent cotton filter wires, and glass fiber filter wires to make wire-wound filter elements for filtering fine particles and impurities in liquids. The thread is chemical fiber, and it is not resistant to high temperature. The use of absorbent cotton filter thread is limited due to its low corrosion resistance and high cost. The long-term use of glass fiber filter thread seriously endangers human health and other unfavorable factors, which seriously affect the development of the industry.

Method used

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  • Hemp fibre filter wire and preparation method thereof
  • Hemp fibre filter wire and preparation method thereof
  • Hemp fibre filter wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1: Preparation of Cannabis Filter Line

[0050] (1) Spin the hemp fiber to be processed into a single strand, and then ply into a multi-strand yarn. The length and thickness of the yarn are made according to the requirements; in order to facilitate degumming and bleaching, the spun yarn is made A skein with a weight of about 450g.

[0051] (2) Soak the yarn in dilute sulfuric acid at 30-40°C for degumming, the bath ratio is 1:9, the soaking time is 12 hours, and then rinse with water until neutral.

[0052] (3) Put the yarn evenly into the cooking pot at room temperature, inject clean water at a bath ratio of 1:15 and then add bleach, and circulate with a pump to make the pH in the cooking pot 9.5 to 11. Warm up the yarn at a rate of 2-3°C / min, wait until the temperature reaches 65°C, then keep raising the temperature at a rate of 1°C / min until the temperature reaches 80-95°C, keep warm for 90 minutes, degumming and bleaching; put the residual liquid in In the...

Embodiment 2

[0058] Embodiment 2: performance detection of hemp fiber filter line

[0059] Hemp fiber filter thread is tested based on relevant standards of absorbent cotton filter thread and polypropylene fiber filter thread.

[0060] (1 Scope:

[0061] This standard is used for hemp fiber filter line (for purification and filtration of various liquids).

[0062] (2) Technical requirements

[0063] ① Sensory

[0064] Pure color, uniform lines, no debris visible to the naked eye, non-toxic, no peculiar smell.

[0065] ②Quality

[0066] The mass tolerance per meter of noodles is ±0.05g.

[0067] ③ twist

[0068] The filter thread with a length of 10cm has a twist of 7 to 12 twists.

[0069] ④ powerful

[0070] 3kg load per meter without breaking

[0071] ⑤ Whiteness

[0072] The whiteness of this product should not be lower than 65 degrees.

[0073] ⑥Water absorption time

[0074] It should sink under the liquid surface within 20S.

[0075] ⑦Fluorescent substance

[0076] View...

Embodiment 3

[0109] Embodiment 3: comprehensive utilization in the preparation process of hemp fiber filter line

[0110] Some waste water will be produced during degumming and bleaching, which will have a certain impact on environmental pollution. For this reason, the following measures are proposed to solve the problem. The method is:

[0111] (1) Discharge the waste acid solution (the sulfuric acid content is about 50% of the stock solution) after soaking and degumming for the first time in the raffinate pool.

[0112] (2) Considering acid-base neutralization, it is proposed to increase the sulfuric acid content by 30% and reduce the soaking time by 40% during the first soaking degumming.

[0113] (3) Recycle the residual liquid after degumming and bleaching, put the uncooked and bleached cannabis filter line into this liquid for pre-treatment with heating, the temperature is controlled at 80-90°C, and the time is 90min, which can greatly reduce the Its chemical material content, at th...

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Abstract

The invention relates to a filter material for water treatment, in particular discloses a hemp fibre filter wire and a preparation method thereof. The hemp fibre filter wire is characterized by being prepared by using hemp fibres as raw materials, spinning the hemp fibres into yarns through hemp spinning equipment and then degumming, bleaching, drying and forming. The invention is mainly used for the purification and the filtering of various liquids; a wire-wound filter core prepared by the hemp fibre filter wire is used for the precise filtering of the liquids in a petroleum industry, a chemical industry, an electron industry, a pharmaceuticals industry, a food industry, a domestic water industry, and the like; and in addition, the invention can bring new vitality for the water treatment industry due to excellent performance and complete green environmentally-friendly quality.

Description

(1) Technical field [0001] The invention relates to a filter material for water treatment, in particular to a hemp fiber filter thread and a preparation method thereof. (2) Background technology [0002] Filter wire is an important material in water treatment. It is used to make wire-wound filter elements for precision purification and filtration of industrial liquids, electronics, medicine, food and domestic water. However, there are many shortcomings in the existing filter wires, which restrict the purification. Development of the filtration industry. [0003] For a long time, the purification and filtration of industrial liquids, medicine, food, and domestic water have been made of polypropylene filter wires, absorbent cotton filter wires, and glass fiber filter wires to make wire-wound filter elements for filtering fine particles and impurities in liquids. The thread is chemical fiber, and it is not resistant to high temperature. The use of absorbent cotton filter threa...

Claims

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Application Information

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IPC IPC(8): B01D39/04D01C1/00D02G3/02
Inventor 郭淼
Owner 郭淼
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