Preparation method of apocynum pulp

Apocynum and apocynum fiber technology, applied in pulp beating method, pulp bleaching, digester and other directions, can solve the problems that the technical indicators of apocynum pulp cannot meet the requirements, the folding endurance and strength are good, and the whiteness of sisal pulp is high. , to reduce the pressure of sewage treatment, improve the whiteness, and simplify the process steps.

Inactive Publication Date: 2011-11-30
山东银鹰股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the publication date is November 12, 2008, and the publication number is CN101302728A in the Chinese patent, which discloses a method for preparing sisal pulp by cooking. The sisal pulp prepared by this method has high whiteness, Good folding resistance and strength, few fluorescent substances, and uniform fiber length. Although sisal and apocynum are similar in many chemical compositions, the physical and chemical properties of sisal are similar to those of apocynum, but the chemical composition of apocynum is similar to that of apocynum. There are still many differences in the chemical composition of sisal, which determines that the physical and chemical properties of apocynum are very different from those of sisal, so the preparation of apocynum pulp by the method of preparing sisal pulp cannot make the various properties of apocynum pulp The technical indicators meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: a kind of preparation method of apocynum pulp, the method comprises the following steps:

[0036] Get the raw materials ready: choose the apocynum fiber that length is 5cm, the apocynum fiber that chooses is the apocynum fiber that appearance does not have impurity, utilizes the hemp cutting machine to cut the apocynum fiber into the apocynum fiber that length is 5cm;

[0037] Preparation of lye: the temperature is controlled at 60°C, and sodium hydroxide with a relative dry pulp volume of 19% and HY-PA penetrant with a relative dry pulp volume of 0.2% are added to prepare the lye;

[0038] Impregnation: According to the ratio of 1:3.7 of Apocynum and prepared lye, the lye is sprayed on Apocynum through a cyclone separator, so that the prepared lye and Apocynum are fully infiltrated and mixed, and then sent by a screw conveyor into the cooker;

[0039] Cooking: In the digester, when the temperature rises for the first time, the pressure is controlled at 0...

Embodiment 2

[0054] Embodiment 2: a kind of preparation method of apocynum pulp, the method comprises the following steps:

[0055] Get the raw materials ready: choose the apocynum fiber that length is 5.5cm, the apocynum fiber that selects is the apocynum fiber that appearance does not have impurity, utilizes the hemp cutting machine to cut the apocynum fiber into the apocynum fiber that length is 5.5cm;

[0056] Preparation of lye: the temperature is controlled at 62°C, and sodium hydroxide with a relative dry pulp volume of 19.1% and HY-PA penetrant with a relative dry pulp volume of 0.21% are added to prepare the lye;

[0057] Impregnation: According to the ratio of 1:3.8 of Apocynum and prepared lye, spray lye on Apocynum through a cyclone separator, make the prepared lye and Apocynum fully infiltrate and mix, and then send it through a screw conveyor into the cooker;

[0058] Cooking: In the digester, when the temperature rises for the first time, the pressure is controlled at 0.32M...

Embodiment 3

[0073] Embodiment 3: a kind of preparation method of apocynum pulp, the method comprises the following steps:

[0074] Get the raw materials ready: choose the apocynum fiber that length is 6cm, the apocynum fiber that selects is the apocynum fiber that appearance does not have impurity, utilizes the hemp cutting machine to cut the apocynum fiber into the apocynum fiber that length is 6cm;

[0075] Preparation of lye: the temperature is controlled at 63°C, and sodium hydroxide with a relative dry pulp volume of 19.3% and HY-PA penetrant with a relative dry pulp volume of 0.22% are added to prepare the lye;

[0076] Impregnation: According to the ratio of Apocynum and prepared lye of 1:3.9, the lye is sprayed on Apocynum through a cyclone separator, so that the prepared lye and Apocynum are fully infiltrated and mixed, and then sent by a screw conveyor into the cooker;

[0077] Cooking: In the digester, when the temperature rises for the first time, the pressure of the first te...

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Abstract

The invention relates to a preparation method of apocynum pulp, which comprises the following steps of material preparation, alkali solution preparation, soaking, steaming boiling, pulping, bleaching, acid treatment, post pulping and sand removal, concentration and pulp making. The apocynum pulp prepared through the method has the advantages of high whiteness, good reaction performance and high methylcellulose content. When the method is used for producing the apocynum pulp, the COD content of discharge waste water is between 30000 and 32000 mg / l, the pollution is low, and the environment pollution is reduced.

Description

technical field [0001] The invention relates to a pulping method, in particular to a method for preparing apocynum pulp by using apocynum as a raw material. Background technique [0002] Apocynum belongs to Apocynaceae. It is a perennial semi-shrub wild high-grade fiber plant with strong stress resistance that grows in saline-alkali, sandy and river beaches. The chemical composition of Apocynum is different from other hemp fibers. The pectin content of Apocynum hemp is 13.14%, the water-soluble content is 17.22%, ranking the crown of each fiber of hemp, the lignin content of 12.14% is higher than that of ramie, flax, hemp, abaca and sisal, and the cellulose content of 40.82% is The lowest of all hemp fibers, the chemical composition of apocynum fiber determines its physical and chemical properties. The cellulose content in the bast of apocynum is as high as 85%-95%, which is higher than that of general hemp. Its fiber density, strength, luster and corrosion resistance are b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C7/00D21D1/02D21C9/16
Inventor 曹知朋陈忠国臧贻朋郑春友吕兴华唐逢
Owner 山东银鹰股份有限公司
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