CN114438807A - Production method of chemi-mechanical pulp - Google Patents
Production method of chemi-mechanical pulp Download PDFInfo
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- CN114438807A CN114438807A CN202111499229.0A CN202111499229A CN114438807A CN 114438807 A CN114438807 A CN 114438807A CN 202111499229 A CN202111499229 A CN 202111499229A CN 114438807 A CN114438807 A CN 114438807A
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- carrier
- wood chips
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention belongs to the technical field of environmental protection and discloses a chemi-mechanical pulp production method, which comprises the following steps: step 1: obtaining a raw material, and cutting the raw material into wood chips by cutting equipment; step 2: cleaning the cut raw material wood chips; and step 3: softening the cleaned raw material wood chips; and 4, step 4: and (3) adding the softened raw material wood chips into a defibrator, separating the wood chips into fine fibers, and discharging the fine fibers by steam pressure spraying. The invention solves the problem of high electricity consumption of wood fiber of the defibrator, reduces the ton pulp cost, improves the output of the defibrator, and solves the problem of paper making consumption, and the consumption of wood pulp produced by the defibrator in corrugated paper can reach about 50 percent.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a production method of chemi-mechanical pulp.
Background
The usage amount of wood fiber used for papermaking is very low, the general usage amount of corrugated paper is 5-10%, the physical indexes of paper are reduced due to large usage amount, waste paper is generated, and the profit is reduced.
Disclosure of Invention
The invention aims to overcome the technical problem of the prior art, provides a method for producing chemi-mechanical pulp, solves the problems of high electricity consumption of wood fibers of a defibrator, reduction of pulp cost per ton, improvement of yield of the defibrator and paper making consumption, and can effectively solve the problems in the background art because the consumption of wood pulp produced by the defibrator in corrugated paper can reach about 50 percent.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a production method of chemi-mechanical pulp, which comprises the following steps:
step 1: obtaining a raw material, and cutting the raw material into wood chips by cutting equipment;
step 2: cleaning the cut raw material wood chips;
and step 3: softening the cleaned raw material wood chips;
and 4, step 4: and (3) adding the softened raw material wood chips into a defibrator, separating the wood chips into fine fibers, and discharging the fine fibers through steam pressure spraying.
As a preferred technical scheme of the invention, the cleaning is to wash the chips with clean water to remove impurities in the chips.
As a preferred embodiment of the present invention, the softening includes:
the wood chips are screened and conveyed to a storage bin, the storage bin outputs the wood chips to a hot grinding machine plug device, and then the wood chips enter a cooking cylinder, the temperature is 110 ℃ and 140 ℃, the steam pressure is 0.65-0.8 MPa, and the wood chips are cooked for 3-5 minutes.
As a preferable technical scheme of the present invention, the cutting apparatus includes a base, a damping groove is formed in the base, a carrier is movably installed in the damping groove, a damping device is installed between the carrier and the damping groove, a numerical control machine is installed on the carrier, an installation frame is fixedly installed on the carrier, a plurality of fans are fixedly installed on the installation frame at equal distances, a recycling bin is placed on the carrier, and a limiting device is installed on the carrier.
As a preferable technical solution of the present invention, two first sliding bars are symmetrically and fixedly installed on outer walls of two sides of the luggage carrier, two first sliding grooves are symmetrically formed on inner walls of two sides of the shock absorption groove, and the first sliding bars and the first sliding grooves are slidably installed.
As a preferable technical solution of the present invention, the damping device includes a plurality of first telescopic rods fixedly installed on a bottom wall of the damping slot at equal intervals, one end of each first telescopic rod away from the damping slot is fixedly installed on an outer wall of the carrier, each first telescopic rod is sleeved with a first spring, and two ends of each first spring are respectively fixedly installed on the bottom wall of the damping slot and the outer wall of the carrier.
As a preferable technical scheme of the invention, the limiting device comprises two movable plates symmetrically and movably mounted on the carrier, the outer walls of the two movable plates at one side far away from the numerical control machine tool are fixedly provided with limiting plates, and the recycling box is placed between the two movable plates.
As a preferable technical scheme of the present invention, second sliding rods are fixedly mounted on outer walls of two movable plates close to one side of the carrier, two second sliding grooves are symmetrically formed in the carrier, the second sliding rods and the second sliding grooves are slidably mounted, second telescopic rods are fixedly mounted on outer walls of two second sliding rods close to one side, one ends of the two second telescopic rods far away from the second sliding rods are fixedly mounted on inner walls of the second sliding grooves, a second spring is sleeved on the second telescopic rods, and two ends of the second spring are fixedly mounted on outer walls of the second sliding rods and inner portions of the second sliding grooves respectively.
One or more technical schemes provided by the invention at least have the following technical effects or advantages:
1. the yield is large, the automatic operation degree is high, the problem of high electricity consumption of wood fibers of the defibrator is solved, the cost of pulp per ton is reduced, the yield of the defibrator is improved, and the problem of the paper making dosage is solved.
2. The main purpose of washing is to remove impurities such as stones, iron pieces, etc. from the wood chips. The traditional defibrator adopts clean water to wash the slices, and the wood chips absorb a large amount of water, so that the dehydration pressure of the rear end material plug is large. The process adopts liquid medicine washing, so that the wood chips are better contacted with the medicine uniformly, and the phenomenon of nonuniform spraying of the traditional hot grinding machine is avoided. The medicine contact is carried out in advance, the softening time is shortened, and the working efficiency is improved.
3. The traditional defibrator only has 5 to 8 minutes of cooking time, and can not achieve the softening effect of wood chips, the normal pressure softening temperature is 80 to 90 ℃ by adopting a cooking pipe, the softening time is prolonged, and the softening time is 30 to 60 minutes.
4. The temperature of a traditional defibrator is 185 ℃, the pressure is 0.65-0.8 MPa, and the slurry is carbonized. The process adopts the temperature of 110-140 ℃ and the pressure of 1.0 MPa, and in order to solve the problem of the proportion of the steam pressure and the temperature, the process adopts an air compressor to supplement the pressure, and the steam heating meets the requirements of the process on the temperature of 110-140 ℃ and the pressure of 1.0 MPa. Thus, the problem of fiber carbonization is solved, the yield is improved, and the cost is reduced.
5. The medicine film washing solves the problem of uneven medicine adding in the later period of the traditional process, shortens the softening time of wood chips, adopts a softening pipe to soften, solves the problems of no material turning and insufficient softening time of the traditional process, adopts a grinder to supplement pressure steam for heating, solves the problems of low yield and fiber carbonization of the traditional process, breaks through the problem of glass body formation on the surface of fiber in the traditional process, and causes high fiber hardness and low papermaking dosage, and the hot grinder of the same machine type improves 10-12 times of profit in one year, reduces the operation cost, and saves a large amount of energy for the country.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic diagram of a cutting apparatus for a chemi-mechanical pulp production process according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a part A of a cutting apparatus of a chemi-mechanical pulp production method according to an embodiment of the present invention;
fig. 3 is an enlarged view of a structure of a portion B of a cutting apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the present invention.
The first embodiment is as follows:
referring to fig. 1-3, the present invention relates to a method for producing chemi-mechanical pulp, comprising the following steps:
step 1: obtaining a raw material, and cutting the raw material into wood chips by cutting equipment;
step 2: cleaning the cut raw material wood chips;
and step 3: softening the cleaned raw material wood chips;
and 4, step 4: adding softened raw material wood chips into a defibrator, separating the wood chips into fine fibers, spraying and discharging materials through steam pressure, wherein the cleaning is to wash the chips with clean water to remove impurities in the wood chips, and the softening comprises the following steps:
the wood chips are screened and conveyed to a storage bin, the storage bin outputs the wood chips to a hot grinding machine plug device, and then the wood chips enter a cooking cylinder, the temperature is 110 ℃ and 140 ℃, the steam pressure is 0.65-0.8 MPa, and the wood chips are cooked for 3-5 minutes.
In the production method of chemi-mechanical pulp, the cutting device comprises a base 1, a shock absorption groove 2 is arranged on the base 1, a carrier frame 3 is movably arranged in the shock absorption groove 2, two first sliding rods 5 are symmetrically and fixedly arranged on the outer walls of two sides of the carrier frame 3, two first sliding grooves 6 are symmetrically arranged on the inner walls of two sides of the shock absorption groove 2, the first sliding rods 5 and the first sliding grooves 6 are slidably arranged, a shock absorption device is arranged between the carrier frame 3 and the shock absorption groove 2, the shock absorption device comprises a plurality of first telescopic rods 7 fixedly arranged on the bottom wall of the shock absorption groove 2 at equal intervals, one end of each first telescopic rod 7, far away from the shock absorption groove 2, is fixedly arranged on the outer wall of the carrier frame 3, each first telescopic rod 7 is sleeved with a first spring 8, two ends of each first spring 8 are respectively and fixedly arranged on the bottom wall of the shock absorption groove 2 and the outer wall of the carrier frame 3, utilize the elastic force effect of a plurality of first springs 8, carry out the shock attenuation to digit control machine tool 4 on carrier 3 and the carrier 3, improve digit control machine tool 4's stability, the life of extension equipment.
A numerical control machine tool 4 is arranged on the carrier 3, a mounting frame 9 is fixedly arranged on the carrier 3, a plurality of fans 10 are fixedly arranged on the mounting frame 9 at equal intervals, a recycling bin 11 is placed on the carrier 3, a limiting device is arranged on the carrier 3, the limiting device comprises two movable plates 12 symmetrically and movably arranged on the carrier 3, a second sliding rod 14 is fixedly arranged on the outer wall of one side, close to the carrier 3, of each of the two movable plates 12, two second sliding grooves 15 are symmetrically formed in the carrier 3, the second sliding rods 14 and the second sliding grooves 15 are slidably arranged, second telescopic rods 16 are fixedly arranged on the outer wall of one side, close to the two second sliding rods 14, of each of the two second telescopic rods 16, one ends, far away from the second sliding rods 14, of the two second telescopic rods 16 are fixedly arranged on the inner wall of the second sliding grooves 15, a second spring 17 is sleeved on the second telescopic rods 16, and two ends of the second spring 17 are fixedly arranged on the outer wall of the second sliding rods 14 and the inner portions of the second sliding grooves 15 respectively, two fly leaf 12 keep away from equal fixed mounting on 4 one side outer walls of digit control machine tool have limiting plate 13, and collection box 11 is placed between two fly leaf 12, and it is worth noting that a plurality of fans 10 have been installed on the carrier 3, utilize fan 10 to blow the collection box 11 with the saw-dust from the lathe in, improve the cleanliness factor on the lathe, and then improve the quality of cutting.
Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.
The working principle of the invention is as follows: when the numerical control machine tool 4 is used, the carrier 3 is driven to vibrate, the first telescopic rod 7 and the first spring 8 are pressed when the carrier 3 vibrates, and the elastic action of the first spring 8 counteracts on the carrier 3, so that the motion amplitude of the carrier 3 and the numerical control machine tool 4 on the carrier 3 is reduced, and the stability of the equipment is improved.
The fan 10 is started, the fan 10 blows the debris on the numerical control machine tool 4 to the recycling box 11, the two movable plates 12 are used for clamping the recycling box 11, and the limiting plate 13 is used for limiting the recycling box 11.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A production method of chemi-mechanical pulp is characterized in that: the method comprises the following steps:
step 1: obtaining a raw material, and cutting the raw material into wood chips by cutting equipment;
step 2: cleaning the cut raw material wood chips;
and step 3: softening the cleaned raw material wood chips;
and 4, step 4: and (3) adding the softened raw material wood chips into a defibrator, separating the wood chips into fine fibers, and discharging the fine fibers by steam pressure spraying.
2. A chemi-mechanical pulp production method according to claim 1, characterised in that: the cleaning is to wash the chips by clean water to remove impurities in the chips.
3. A chemi-mechanical pulp production method according to claim 2, characterised in that: the softening comprises:
the wood chips are screened and conveyed to a storage bin, the storage bin outputs the wood chips to a hot grinding machine plug device, and then the wood chips enter a cooking cylinder, the temperature is 110 ℃ and 140 ℃, the steam pressure is 0.65-0.8 MPa, and the wood chips are cooked for 3-5 minutes.
4. A chemi-mechanical pulp production method according to claim 1, characterised in that: cutting equipment includes base (1), damping groove (2) have been seted up on base (1), movable mounting has carrier (3) in damping groove (2), install damping device between carrier (3) and damping groove (2), install digit control machine tool (4) on carrier (3), fixed mounting has mounting bracket (9) on carrier (3), equidistant fixed mounting has a plurality of fans (10) on mounting bracket (9), collection box (11) have been placed on carrier (3), install stop device on carrier (3).
5. A chemi-mechanical pulp production method according to claim 4, wherein: two first sliding rods (5) are symmetrically and fixedly mounted on the outer walls of the two sides of the luggage carrier (3), two first sliding grooves (6) are symmetrically formed in the inner walls of the two sides of the damping groove (2), and the first sliding rods (5) and the first sliding grooves (6) are slidably mounted.
6. A chemi-mechanical pulp production method according to claim 5, wherein: damping device includes equidistant fixed mounting's a plurality of first telescopic link (7) on damping slot (2) diapire, every damping slot (2) one end equal fixed mounting is kept away from in first telescopic link (7) on the outer wall of carrier (3), every all the cover is equipped with first spring (8) on first telescopic link (7), every first spring (8) both ends are fixed mounting respectively on the diapire of damping slot (2) and the outer wall of carrier (3).
7. A chemi-mechanical pulp production method according to claim 6, wherein: stop device includes two fly leaves (12) of symmetry movable mounting on carrier (3), two equal fixed mounting has limiting plate (13) on fly leaf (12) keep away from digit control machine tool (4) one side outer wall, collection box (11) are placed between two fly leaves (12).
8. A chemi-mechanical pulp production method according to claim 7, wherein: two all fixed mounting have second slide bar (14) on fly leaf (12) are close to carrier (3) one side outer wall, two second spout (15) have been seted up to the symmetry on carrier (3), slidable mounting between second slide bar (14) and second spout (15), two second slide bar (14) are close to one side outer wall mutually and all fixed mounting have second telescopic link (16), two second telescopic link (16) keep away from second slide bar (14) one end and all fixed mounting on the inner wall of second spout (15), the cover is equipped with second spring (17) on second telescopic link (16), second spring (17) both ends are fixed mounting respectively on the outer wall of second slide bar (14) and the inside of second spout (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499229.0A CN114438807A (en) | 2021-12-09 | 2021-12-09 | Production method of chemi-mechanical pulp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499229.0A CN114438807A (en) | 2021-12-09 | 2021-12-09 | Production method of chemi-mechanical pulp |
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| CN114438807A true CN114438807A (en) | 2022-05-06 |
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| CN202111499229.0A Pending CN114438807A (en) | 2021-12-09 | 2021-12-09 | Production method of chemi-mechanical pulp |
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| CN101177921A (en) * | 2007-12-12 | 2008-05-14 | 中冶纸业银河有限公司 | Continuous pulping method for cotton stalk natural color chemomechanical pulp |
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