Continuous pulping method for cotton stalk natural color chemomechanical pulp

Abstract

The invention relates to a cotton-stalk true-color chemo-mechanical continuous pulping method. The invention comprises the steps that: (1) the materials are cut into material sheets equal to or smaller than 40mm by machines; (2) the qualified materials are dedusted by a cleaner, sent into a material warehouse to be stored, sent to a washer to be washed, heavy impurities are separated by the function of washing water, and then the materials enter into a dewaterer to be dewatered, to eliminate the sand and dust in the materials; (4) the dewatered materials are sent to a quantifier to be quantified, and the quantified materials are squeezed and dewatered by a helical feeder and form a compact material plunger, which is sent into a digester; (4) digestion liquor is added into the digester to fully soak the material plunger, and steam is introduced for the digestion; (5) after the digestion, the materials drop to a high concentration thermofiner to be defibrinated; (6) the defibrinated pulp is injected to a blow tank to be latented; (7) the latented pulp is washed, sifted, and finally can be sent to a paper machine for papermaking. The invention has the advantages of simple technique process, continuous digestion and defibrination, good pulp quality, and high yielding.

Description

Technical field: [0001] The invention relates to a pulping method in the field of pulping and papermaking, in particular to a continuous pulping method for natural color chemical mechanical pulp of cotton stalks. Background technique: [0002] At present, the technology of using cotton stalks as raw materials to produce chemical mechanical pulp can be divided into bleached cotton stalk chemical mechanical pulp and natural cotton stalk chemical mechanical pulp. The traditional cotton stalk chemical mechanical pulping method has low pulping yield, low refining concentration, poor refining effect and high power consumption. In the patent No. 200510051367.7, a pulping method of cotton stalks or shrubs or branches is mentioned, which mainly has the following disadvantages: ①Intermittent pulping, low production capacity; High; ③ After cooking, the pulp must go through two refining processes before it can be pulped, and the process is complicated; ④ The cooked pulp cannot directly...

AI Technical Summary

Problems solved by technology

The traditional cotton stalk chemical mechanical pulping method has low pulping yield, low refining concentration, poor refining effect and high power consumption

In the patent No. 200510051367.7, a pulping method of cotton stalks or shrubs or twigs is mentioned, which mainly has the following disadvantages: ①Intermittent pulping, low production capacity; High; ③ After cooking, the pulp must go through two refining processes before it can be pulped, and the process is complicated; ④ After cooking, the pulp cannot directly enter the refiner, the temperature of the pulp before grinding is low, and the refining poor effect

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