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Method for preparing super-high-bulk paper pulp from fir slabs

A technology of ultra-high looseness and slabs, applied in the field of papermaking, can solve the problems of unsatisfactory use effect and unsuitable for papermaking bulkiness, etc., and achieve the effects of increasing surface area, good chemical treatment effect, and excellent bleaching effect

Active Publication Date: 2015-06-17
福建腾荣达制浆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Those who adopt this technology can of course use fir processing residues to produce chemical pulp, but because the process is chemical pulping, it is only suitable for making high-strength natural color packaging paper, not suitable for paper types that require high bulk and thickness. not ideal

Method used

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  • Method for preparing super-high-bulk paper pulp from fir slabs

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Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1, a kind of method for preparing ultra-high bulk paper pulp with Chinese fir board, comprises the following steps:

[0026] (1) material selection and slicing: select the 1-2cm thick Chinese fir slab after removing the coring in the wood processing factory, remove the rough skin of the slab outer layer and slice it with a drum slicer. The slicing specification is 2-2.5cm long. The width is 4.5cm. After being sliced, it is sent to the wood chip swing screen through the conveyor belt, and the wood chips and wood knots are screened out, and then sent to the wood chip warehouse for storage;

[0027] (2) Pre-steaming: The wood chips prepared in step (1) are first washed to remove dust through the washing device, and then remove heavy impurities such as wood knots and stones, and then send them into the preheating bin, inject steam, and control the preheating bin The temperature is 90°C, the pre-steaming time is 10 minutes, and the wood chips are initially softene...

Embodiment 2

[0036] Embodiment 2, a kind of method for preparing ultra-high bulk paper pulp with Chinese fir board, comprises the following steps:

[0037] (1) material selection and slicing: select the 1-2cm thick Chinese fir slab after removing the coring in the wood processing factory, remove the rough skin of the slab outer layer and slice it with a drum slicer. The slicing specification is 2-2.5cm long. The width is 4.5cm. After being sliced, it is sent to the wood chip swing screen through the conveyor belt, and the wood chips and wood knots are screened out, and then sent to the wood chip warehouse for storage;

[0038] (2) Pre-steaming: The wood chips prepared in step (1) are first washed to remove dust through the washing device, and then remove heavy impurities such as wood knots and stones, and then send them into the preheating bin, inject steam, and control the preheating bin The temperature is 93°C, the pre-steaming time is 15 minutes, and the wood chips are initially softene...

Embodiment 3

[0047] Embodiment 3, a kind of method for preparing ultra-high bulk paper pulp with Chinese fir board, comprises the following steps:

[0048] (1) material selection and slicing: select the 1-2cm thick Chinese fir slab after removing the coring in the wood processing factory, remove the rough skin of the slab outer layer and slice it with a drum slicer. The slicing specification is 2-2.5cm long. The width is 4.5cm. After being sliced, it is sent to the wood chip swing screen through the conveyor belt, and the wood chips and wood knots are screened out, and then sent to the wood chip warehouse for storage;

[0049] (2) Pre-steaming: The wood chips prepared in step (1) are first washed to remove dust through the washing device, and then remove heavy impurities such as wood knots and stones, and then send them into the preheating bin, inject steam, and control the preheating bin The temperature is 95°C, the pre-steaming time is 20 minutes, and the wood chips are initially softene...

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Abstract

The invention discloses a method for preparing super-high-bulk paper pulp from fir slabs. The method is a process for producing bleached pulp boards according to the chemical hot-grinding technology, and comprises the following steps: slicing, pre-boiling, extruding, soaking, pre-heating, defibrination, secondary defibrination, screening and purifying, bleaching and papermaking. The method has the advantages that the prepared paper pulp is high yield, bulk, whiteness, drainability, tenacity, stiffness, ink absorption and compressibility, so that the print performance of the prepared paper pulp can be improved; the production cost and the sewage emission are low; the sewage is easy to treat; the prepared paper pulp can be used for producing of light paper, cup base paper and other types of paper requiring high bulk.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and relates to a method for preparing paper pulp, in particular to a method for preparing ultra-high-bulk paper pulp with fir board skin. Background technique [0002] At present, the high-yield pulp used in papermaking is mainly chemical-mechanical pulp produced from fast-growing and high-yield poplar, eucalyptus and other tree species, and its bulk is relatively low, generally 1.5-2.2cm 3 / g, as a raw material for books and periodicals, light offset paper is in great demand, but it is impossible to produce light offset paper with the existing low-bulk chemical-mechanical pulp. Chinese fir is a high-quality raw material for pulp, but due to the relatively slow growth of Chinese fir, the cost of making pulp with a large number of Chinese fir is high and the raw materials are not sufficient. Therefore, although Chinese fir has good performance, it is generally not used as a raw material for pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C1/02D21C9/16D21C1/06D21B1/16
CPCD21B1/16D21C1/02D21C1/06D21C9/16
Inventor 杨声雄邱辉尚张万李
Owner 福建腾荣达制浆有限公司
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