Method of preparing bleached chemical pulp using cotton stalk

A chemical pulping and pulping technology, used in chemical/chemical mechanical pulping, pulp bleaching, pulping with inorganic alkali, etc., can solve problems such as unsatisfactory effects, alleviate the shortage of wood resources, easy to wash, and high extraction rate Effect
CN1718919AActive Publication Date: 2006-01-11SHANDONG TRALIN PAPER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG TRALIN PAPER
Publication Date
2006-01-11

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Abstract

The present invention discloses a method for preparing bleached chemical pulp by using cotton stalk. The described method is an alkaline process, and includes the following steps: preparing material, impregnating treatment, first cooking or secondary cooking to obtain crude pulp, then washing pulp, bleaching so as to obtain the finished paper.
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Description

Technical field:

[0001] The invention relates to a method for preparing bleached chemical pulp from cotton stalks, belonging to the technical field of papermaking and pulping. Background technique:

[0002] Due to the rapid development of the paper industry, there has been an unprecedented shortage of raw materials for the paper industry. Therefore, as a major cotton-producing country, it is particularly important for my country to develop new raw materials for papermaking and pulping. Xinjiang, Gansu, Shanxi, Shandong, Henan, and Shaanxi are all rich in raw materials. Cotton stalk resources can be used for papermaking.

[0003] Cotton stalks are used as papermaking raw materials, and cotton stalk pulp is usually prepared by soaking, cooking and washing the cotton stalks and refining them in a cold grinder or chemical pulping. But the effect is not ideal.

[0004] In order to effectively utilize cotton stalk raw materials, it is necessary to study new cotton stalk pulping m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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