CN101583758B

CN101583758B - Manufacturing method of bamboo chip for manufacturing the solubility pulp and thereof

Info

Publication number: CN101583758B
Application number: CN2007800375848A
Authority: CN
Inventors: 白日基
Original assignee: I'BIGINC CO Ltd
Current assignee: I'biginc Co., Ltd.
Priority date: 2006-10-12
Filing date: 2007-10-10
Publication date: 2011-12-07
Anticipated expiration: 2027-10-10
Also published as: WO2008044860A1; CN101583758A; KR100767318B1

Abstract

There are provided a method for manufacturing a bamboo chip for a soluble pulp and a bamboo chip manufactured therefrom, the bamboo capable of improving their productivity and obtaining high-quality products, as well as manufacturing the soluble pulps economically and environment-friendly. The present invention provides a method for manufacturing bamboo chips including steps of: softening bamboo stems and giving bulkiness in a process of manufacturing bamboo chips by pressing and crushing the bamboo, which has compact and structural characteristics in nature, with a convex roller to tear the bamboo stems into pieces in a longitudinal direction, and simultaneously cutting the bamboo stems into bamboo chips having desired lengths; removing a large amount of unnecessary substances, such as lignin, thin- wall tissues, joints, silicified barks and the like, in celluloses in the above-mentioned process so as to facilitate easy penetration of chemical agents and effectively remove lignin and hemicellulose in a process for extracting a pulp; and pressing and bending the bamboo chips into certain shapes to package the bamboo chips, and transporting the bamboo chips to a container or a bulk carrier in an economic manner.

Description

Be used to make the bamboo chip manufacture method and the bamboo chip thereof of soluble pulp

Technical field

The present invention relates to a kind of manufacture method of bamboo chip and the bamboo chip of making according to this method, particularly a kind ofly high quality of products can be boosted productivity and obtain, the bamboo chip manufacture method of soluble pulp and environmental protection can be made economically, and the bamboo chip of making according to this method.

Background technology

Generally speaking, directly do not develop as non-textile fiber through the natural bamboo fibres of course of dissolution.Equally, paper grade pulp is as the raw material of thin paper and amenities (other goods such as wrapping paper, facial tissue, beauty and make-up paper, sanitary napkin, diaper), dissolving is used as the raw material (for example, viscose, viscose staple fibre etc.) of chemical fibre, glassine paper, plastic products, various cellulose base derivatives with paper pulp.

Therefore, the invention provides and a kind ofly can boost productivity and obtain high quality of products, can make the bamboo chip manufacture method of above-mentioned soluble pulp and environmental protection economically.

Usually, coniferous tree, broad leaf tree, other timber are as paper pulp raw material, owing to wood pulp is to be come by wood chip, so the increase of wood pulp consumption causes the felling of timber more and more serious.

Global environment suffers to destroy rambunctiously and damage to be attributed to so unfeelingly to cut down timber, so unfeelingly cuts down the serious problems that timber also causes global environment, for example depletion of the ozone layer, extreme climate etc.Therefore, a lot of expenses are damaged and spent to whole world control forest aspect forest conservation, and these cause the wood chip cost to rise.

Therefore, for addressing the above problem, produce and comprise non-wood material but not the raw material of timber, produce high-quality soluble pulp, and with the various products of this pulp production, much such trials are being carried out actively always with these raw material.

Wherein, utilize the bamboo that growth cycle is short and can use as paper pulp material, to obtain bamboo natural fabric, paper grade pulp, dissolving paper pulp, utilize these raw material to make various stationeries or fibre, a lot of such trials are being carried out always actively, moreover, relevant therewith a lot of patents are also disclosed both at home and abroad.

Make a general survey of the utilization of bamboo, as what describe in the domestic and international disclosed patent, the leaf of bamboo and impurity are removed from bamboo; Remaining bamboo is cut into that length and width are approximately 20 to 30mm, thickness is approximately 2 to 3mm fritter to obtain bamboo chip 300 as shown in Figure 4; Bamboo chip 300 at high temperature passes through the processing of chemicals in boiling (cooking) process, this processing makes that bamboo chip is softening and changes into paper pulp that paper pulp product process dust removal process, selection course, washing and concentration process and bleaching process are to produce the paper products of wanting.

For these processes, be added to various chemicals in the bamboo chip and digestion process that high temperature is handled down bamboo chip is important.

Under the situation of digestion process, when various chemicals are added in the bamboo chip and bamboo chip is at high temperature handled, be used to make the chemicals of bamboo chip paper pulpization to infiltrate how soon bamboo has and many easily for promoting that bamboo chip lignification removal is important.And for soluble pulp, it is important removing hemicellulose, and hemicellulose is that content by increasing alphacellulose (alpha-cellulose) in the paper pulp is to improve the output and the quality of paper pulp.

But,, remain in some hemicellulose in the paper pulp and be the output that is used for improving paper pulp and quality to paper grade pulp.

But, since so far still use cut apart after bamboo chip generally by simply bamboo being cut into certain-length and size is ready to, many rings, parenchymal tissue and the bark that silicifies are arranged on the bamboo chip.Therefore, because the firm and fine and close design feature of bamboo, chemicals can not infiltrate bamboo easily in digestion process, and these characteristics of bamboo cause the boiling operation insufficient.Therefore, the output of the paper pulp that obtains in the digestion process and quality have all reduced.

In order to address this problem, a lot of methods are provided, the quantity of the chemicals that these methods or increase add, or improve boiling temperature, or prolong digestion time, thus improve the condition of the chemicals infiltration bamboo that is used for the boiling bamboo.But, to add too much boiling chemicals and can cause environmental pollution, the raising of boiling temperature and the prolongation of digestion time make energy consumption increase and also alphacellulose are damaged.

In addition, because the investment of large-scale production devices needed is huge, increased production cost, and, owing to be incorporated into digestion process as ring, lignin, parenchymal tissue and the unnecessary part of the bark or the like that silicifies, in making the bamboo chip process, be difficult to extract high-quality alphacellulose.

In addition, owing to the bamboo chip after cutting apart is difficult to pile up in transit, stores and packs, thus transport the cost of transportation height of bamboo chip with container, and be difficult to the transportation optional equipment of bulk carrier is invested and reduced the use of bulk carrier.Moreover, because the growth of fungi and bacterium also is difficult to produce the product of unified specification, also be difficult to store bamboo chip.

Summary of the invention

Technical problem

Therefore, the present invention is used for addressing the above problem, and the purpose of this invention is to provide a kind of method of making bamboo chip, this bamboo chip can obtain various paper pulp, even and this bamboo chip quantity, digestion time and boiling temperature when the boiling chemicals in the process of making bamboo wood natural fabric reduce also and can reduce production cost when reducing circulation cost, this bamboo chip can be used to make soluble pulp and paper grade pulp.

Technical scheme

In order to achieve the above object, the method of the manufacturing bamboo chip that one embodiment of the present of invention provide may further comprise the steps: by removing branch, the leaf of bamboo and the ring on the bamboo with compact and natural structure characteristics, and for the bamboo trunk is torn into sheet in the longitudinal direction with convex roller extruding with roll bamboo, and the bamboo trunk is cut into have the length of wanting simultaneously, thereby in manufacture process, make the softening and bulking of bamboo trunk; For chemicals infiltrates bamboo easily and remove lignin and hemicellulose effectively in extracting process of pulp, remove a large amount of redundant impurities that in said process, produce in the cellulose, for example lignin, parenchymal tissue, ring and the bamboo skin or the like that silicifies; With the extruding of described bamboo chip with bend to definite shape so that packing and be transported in container and the bulk carrier in mode economically.

Technique effect

In order to produce various paper pulp with bamboo, the present invention manufactures the sheet profile so that make bamboo paper pulpization easily with bamboo, with convex cylinder and rotary knife cutter bamboo is rolled and tears slabbing in the longitudinal direction rather than with prior art with the bamboo piecemeal, make the bamboo bulking simultaneously, make bamboo in the paper pulp process, have many advantages by these means.Moreover and since bamboo chip of the present invention can be bent to certain size be convenient to the packing, so bamboo chip of the present invention can be transported to like a cork in container and the bulk carrier, thereby reduce circulation cost.

Description of drawings

Fig. 1 is the bamboo that is used to make bamboo chip of the present invention;

Fig. 2 is the bamboo chip in specific embodiment of the present invention;

Fig. 3 is the bamboo chip in another specific embodiment of the present invention;

Fig. 4 is existing bamboo chip.

The specific embodiment

Hereinafter, describe the preferred embodiments of the present invention with reference to the accompanying drawings in detail.At first be noted that the identical Reference numeral of part use that has same or similar function in the accompanying drawing.

Fig. 1 has represented to be used for bamboo 100 of the present invention, and Fig. 2 and Fig. 3 have represented the bamboo chip 200 made by bamboo 100 in the embodiment of the invention.

Flow process of the present invention comprises step: felling bamboo in the mountain area, remove bamboo branch and leaf from bamboo, bamboo is transported to the factory that makes bamboo chip, remove ring from transporting the bamboo that comes, is to send into the process of making bamboo chip with the bamboo of removing ring.

The process of described manufacturing bamboo chip comprises step: carry bamboo, cut and roll the bamboo that transports in the longitudinal direction, be separated in roll with cutting process in produce dirt bits and other impurity, select and collect and roll and cut bamboo chip, the crooked bamboo chip that bamboo chip later, extruding are collected, make after the process of bamboo chip be pile up, storage and transportation.

Hereinafter, will be described in detail with reference to the attached drawings the present invention.

In the process of making bamboo chip, provide various device in bamboo supply unit, but bamboo is by existing conveyer supply.

Bamboo process pressurizing unit by the conveyer supply, described pressurizing unit camber cylinder is double installation, in order to make the bamboo bulking, when columniform bamboo during through a plurality of convex cylinder of pressurizing unit, bamboo is squeezed on the bamboo length direction 1 to the wide bamboo chip of 3mm.Then, the pressurizing unit that process is equipped with the convex cylinder arrives the long bamboo chips of 40mm through being cut into 20 after having a plurality of blade rotary knife cutters, thereby is obtaining bamboo chip 200 as shown in Figures 2 and 3 in the longitudinal direction by the bamboo after tearing once.

As mentioned above, columniform bamboo 100 is ground into sheet through convex cylinder and rotary knife cutter the time, and the cellulose-less of bamboo (cellulose-free) ring, hemicellulose and lignin are ground into the dirt bits.The dirt bits that produce are sucked by fan and separate the application that the byproduct of separation is used to want in cyclone separators.

In addition, firm bamboo cortex contains many high-qualitys and cellulose that want, be torn in the longitudinal direction sheet and only part destroyed by the convex roller, the bamboo after tearing simultaneously becomes bulk, so chemicals infiltrates easily in chemical treating process.

The bamboo chip of handling well is sent to the sieve that is installed in the device for sorting by conveyer, and non-essential impurity such as little bamboo bits or dirt bits are fallen below the sieve, and these things can be used for other application.What stay in the sieve so, is exactly the selected high-quality bamboo chip that comes out to use.High-quality bamboo chip after selecting is collected by conveyer, is extruded and bends to the size of wanting.Product after the bending is sent to existing paper pulp process.

For bamboo chip 200 of the present invention, the structure of bamboo chip 200 is different with the bamboo chip of existing piecemeal 300, bamboo chip 200 structures are bulk, this is because in cutting with roll bamboo cortex firm in the process of cylindrical bamboo and be torn into long narrow sheet, cutting and roll cylindrical bamboo is to carry out in the longitudinal direction with rotary knife cutter and the pressurizing unit that the convex roller is installed, thereby rolled and removed most of non-cellulose ring or contained the wooden part of a large amount of hemicelluloses, and remaining bamboo cortex also is torn into sheet and is destroyed by the convex roller.So chemical medicinal liquid can enter bamboo chip easily in the chemical treating process of making soluble pulp.

As mentioned above, bamboo chip 200 of the present invention is to cut in the longitudinal direction when destroying bamboo that 1 to the 3mm arrow gauge of growing obtains, thereby most non-essential ring or inner wooden part be removed in this process, and this process makes that chemicals can easily infiltrate in subsequent process.Therefore, method of the present invention is environmental protection and use amount that reduce digestion time owing to making, reduce boiling temperature and reduce chemicals becomes and may reduce cost, can produce a large amount of high-quality alphacelluloses in addition obtaining the soluble pulp of high-quality, thereby obtain high-quality natural fabric, be used for the paper pulp and the soluble pulp of papermaking.

In addition, thereby the bamboo chip that the method according to this invention obtains can pile up easily, store owing to being extruded and bending to certain size, thereby can pack easily, and circulation cost owing to can piling up in the container of transportation usefulness, reduces a large amount of bamboo chips.

The form 1 of back has been listed by contrasting the result that existing piecemeal bamboo chip 300 and bamboo chip of the present invention 200 obtain.

The contrast of existing piecemeal bamboo chip of table 1 and bamboo chip of the present invention

	Bamboo chip of the present invention	Existing piecemeal bamboo chip	Contrast
				Add chemicals quantity	Low	High	20 to 30%
The removal of impurity	High	Low	Differ 20%
				Digestion time	Short	Long	Reduce 15%
Output	High	Low	Improved more than 15%
				Productivity ratio	Big quantity/bamboo	Smallest number/bamboo	High equipment investment

The waste disposal cost	Low	High	Reduce by 35%
				Alphacellulose	High	Low	Improve 2-3%
Product transport	May	Impossible	Pile up standard in the container
				The products in circulation cost	Low	High

As shown in table 1, to compare with existing bamboo chip 300, bamboo chip 200 of the present invention infiltrates because of the chemical medicinal liquid that helps using in the paper pulp process, thereby is of value to the use that reduces chemicals; Because non-essential impurity is removed in making the bamboo chip process effectively, thereby has improved output, increased productivity ratio and shortened digestion time; Because the content height of the alphacellulose of bamboo chip 200, thereby can obtain high-quality natural fabric; Use container and bulk carrier transportation because bamboo chip 200 is beneficial to after extruding and bending, thereby reduced circulation cost.

Above-mentioned explanation only is to the principle of the specific embodiment of the invention and the explanation of example; it is not qualification to protection domain of the present invention; therefore, should be understood that those skilled in the art can make other identical or revise technical scheme within the spirit and scope of the present invention.Therefore, should be understood that the restriction that protection scope of the present invention is not described in detail by specification, but claimed scope of claims and equivalent way thereof.

Claims

1. manufacture method that is used to make the bamboo chip of soluble pulp is characterized in that comprising:

With cutting machine bamboo is cut into the long bamboo chip of 20～40mm, and roll bamboo in the longitudinal direction with a plurality of convex rollers simultaneously, bamboo is torn into the wide bamboo chip of 1～3mm, so that the bamboo bulking;

Send the bamboo chip after rolling and cutting to sieve to remove impurity; And

Bamboo chip behind the removal impurity is pushed and bending.