Ultrasonic and biological enzyme collaborative deinking process for packaging paper
阅读说明：本技术 一种包装用纸超声波及生物酶协同脱墨工艺 (Ultrasonic and biological enzyme collaborative deinking process for packaging paper ) 是由 刘洁 黄爱林 于 2020-12-16 设计创作，主要内容包括：本发明提出了一种包装用纸超声波及生物酶协同脱墨工艺。本发明涉及制浆造纸领域。本发明的方案：皮带运输机、散包机、粗浆池、超声波反应器、良浆池、精筛、浮选槽和多盘浓缩机。本发明能够通过超声波加生物酶协同脱墨取得了良好的效果。(The invention provides a package paper ultrasonic and biological enzyme collaborative deinking process. The invention relates to the field of pulping and papermaking. The scheme of the invention is as follows: belt conveyer, bale breaker, coarse pulp pond, ultrasonic reactor, fine pulp pond, fine screen, flotation cell and polydisc thickener. The invention can obtain good effect by ultrasonic wave and biological enzyme synergistic deinking.)
1. An ultrasonic and biological enzyme collaborative deinking process for packaging paper is characterized by comprising the following steps:
a belt conveyer for conveying the waste paper containing the printing ink;
a bale breaking machine: receiving waste paper containing printing ink in the belt conveyor, scattering the waste paper containing printing ink to evacuate the waste paper and continuously transport the waste paper;
a coarse pulp tank: receiving waste paper containing ink scattered in a bale breaking machine, and performing pre-dipping treatment on the waste paper containing the ink;
an ultrasonic reactor: receiving waste paper pulp containing ink in a coarse pulp tank, and defibering the waste paper coarse pulp containing ink;
a good pulp tank: receiving the defibered ink waste paper in the ultrasonic reactor, and storing the ink waste paper pulp;
fine screening: receiving ink waste paper in a good pulp pond, and screening the ink waste paper to remove impurities in ink waste paper pulp;
a flotation tank: receiving the printing ink waste paper pulp in the fine screen, performing deinking treatment on the printing ink waste paper pulp, and discharging the printing ink separated from the waste paper pulp;
multi-disc concentrator: receiving the waste paper pulp suspension separated from the printing ink in the flotation tank, and increasing the concentration of the waste paper pulp solution.
2. The process of claim 1, wherein the belt conveyer is connected with an electromagnetic iron removal device.
3. The collaborative deinking process of packaging paper by ultrasonic waves and biological enzymes as claimed in claim 1, wherein the bale breaker comprises a feed inlet and a discharge outlet, the feed inlet is connected with the belt conveyor, the discharge outlet is connected with the coarse pulp tank, and the feed inlet is provided with a water spraying assembly.
4. The collaborative deinking process of packaging paper by ultrasonic waves and biological enzymes as claimed in claim 1, wherein the bale breaker comprises a feed inlet and a discharge outlet, the feed inlet is connected with the belt conveyor, the discharge outlet is connected with the coarse pulp tank, and the discharge outlet is provided with a slag collecting component.
5. The process of claim 1, wherein the ultrasonic wave and bio-enzyme synergistic deinking process for the packaging paper is characterized in that the ultrasonic reactor comprises an ultrasonic generator, an ultrasonic transducer and an ultrasonic reactor body.
6. The deinking process by combining ultrasonic waves and biological enzymes for packaging paper as claimed in claim 5, characterized by comprising a plurality of ultrasonic reactors, wherein the rated power of any one ultrasonic generator is 2 KW.
7. The deinking process based on the combination of ultrasonic waves and biological enzymes for packaging paper as claimed in claim 5, further comprising a reaction chamber, wherein the ultrasonic reactor is located in the reaction chamber, the reaction chamber is provided with a plurality of through holes, and any two adjacent reaction chambers are communicated through the through holes.
8. The collaborative deinking process of packaging paper by ultrasonic waves and biological enzymes as claimed in claim 7, wherein the diameter of the through hole is 80 mm, the reaction chamber is communicated with the brown stock tank through the through hole, and the reaction chamber is communicated with the accepts tank through the through hole.
9. The process of claim 1, wherein the flotation tank contains 1.2% of waste paper absolute amount of surfactant and 1% of waste paper absolute amount of bleaching agent.
10. The process of claim 1, wherein the temperature in the fine screen is 40-50 ℃ and the temperature in the flotation tank is 40-50 ℃.
Technical Field
The invention relates to the field of pulping and papermaking, in particular to a package paper ultrasonic and biological enzyme collaborative deinking process.
Background
The waste paper is an important renewable resource, and the recycling of the waste paper is an effective way for solving three problems of raw material shortage, energy shortage, serious pollution and the like in the paper industry. Office waste paper is a large type of waste paper, and is high-quality waste paper with low impurity content and high wood pulp fiber content.
At present, office waste paper contains a large amount of laser printing paper and electrostatic copy paper, and the traditional chemical deinking is difficult to obtain good effect, so that the recycling of the office waste paper is restricted.
Disclosure of Invention
The invention aims to provide a package paper ultrasonic wave and biological enzyme collaborative deinking process, which comprises the following steps:
a belt conveyer for conveying the waste paper containing the printing ink;
a bale breaking machine: receiving waste paper containing printing ink in the belt conveyor, scattering the waste paper containing printing ink to evacuate the waste paper and continuously transport the waste paper;
a coarse pulp tank: receiving waste paper containing ink scattered in a bale breaking machine, and performing pre-dipping treatment on the waste paper containing the ink;
an ultrasonic reactor: receiving waste paper pulp containing ink in a coarse pulp tank, and defibering the waste paper coarse pulp containing ink;
a good pulp tank: receiving the defibered ink waste paper in the ultrasonic reactor, and storing the ink waste paper pulp;
fine screening: receiving ink waste paper in a good pulp pond, and screening the ink waste paper to remove impurities in ink waste paper pulp;
a flotation tank: receiving the printing ink waste paper pulp in the fine screen, performing deinking treatment on the printing ink waste paper pulp, and discharging the printing ink separated from the waste paper pulp;
multi-disc concentrator: receiving the waste paper pulp suspension separated from the printing ink in the flotation tank, and increasing the concentration of the waste paper pulp solution.
In some embodiments of the present invention, the belt conveyer is connected to an electromagnetic iron removing device.
In some embodiments of the invention, the bale breaker comprises a feed inlet and a discharge outlet, the feed inlet is connected with the belt conveyor, the discharge outlet is connected with the coarse pulp tank, and the feed inlet is provided with a water spraying assembly.
In some embodiments of the invention, the bale breaker comprises a feed inlet and a discharge outlet, the feed inlet is connected with the belt conveyor, the discharge outlet is connected with the coarse pulp tank, and the discharge outlet is provided with the slag collecting assembly.
In some embodiments of the present invention, the ultrasonic reactor includes an ultrasonic generator, an ultrasonic transducer, and an ultrasonic reactor body.
In some embodiments of the invention, the ultrasonic reactor comprises a plurality of ultrasonic reactors, and the rated power of any ultrasonic generator is 2 KW.
In some embodiments of the present invention, the reaction chamber further includes a plurality of through holes, and any two adjacent reaction chambers are connected through the through holes.
In some embodiments of the present invention, the diameter of the through hole is 80 mm, the reaction chamber is communicated with the coarse pulp tank through the through hole, and the reaction chamber is communicated with the fine pulp tank through the through hole.
In some embodiments of the invention, the flotation tank includes 1.2% by weight of a surfactant and 1% by weight of a bleaching agent.
In some embodiments of the invention, the temperature in the fine screen is 40 ℃ to 50 ℃ and the temperature in the flotation cell is 40 ℃ to 50 ℃.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
an ultrasonic and biological enzyme collaborative deinking process for packaging paper comprises the following steps:
a belt conveyer for conveying the waste paper containing the printing ink;
a bale breaking machine: receiving waste paper containing printing ink in the belt conveyor, scattering the waste paper containing printing ink to evacuate the waste paper and continuously transport the waste paper;
a coarse pulp tank: receiving waste paper containing ink scattered in a bale breaking machine, and performing pre-dipping treatment on the waste paper containing the ink;
an ultrasonic reactor: receiving waste paper pulp containing ink in a coarse pulp tank, and defibering the waste paper coarse pulp containing ink;
a good pulp tank: receiving the defibered ink waste paper in the ultrasonic reactor, and storing the ink waste paper pulp;
fine screening: receiving ink waste paper in a good pulp pond, and screening the ink waste paper to remove impurities in ink waste paper pulp;
a flotation tank: receiving the printing ink waste paper pulp in the fine screen, performing deinking treatment on the printing ink waste paper pulp, and discharging the printing ink separated from the waste paper pulp;
multi-disc concentrator: receiving the waste paper pulp suspension separated from the printing ink in the flotation tank, and increasing the concentration of the waste paper pulp solution.
In the above embodiment, a package paper ultrasonic wave and bio-enzyme collaborative deinking process includes a belt conveyer, a bale breaker, a coarse pulp tank, an ultrasonic reactor, a fine pulp tank, a fine screen, a flotation tank and a multi-disc thickener, and the belt conveyer, the bale breaker, the coarse pulp tank, the ultrasonic reactor, the fine pulp tank, the fine screen, the flotation tank and the multi-disc thickener are sequentially connected, wherein office waste paper is transported by the belt conveyer, and the office waste paper is transported to the bale breaker, wherein the bale breaker comprises a barrel, a feeding device, a barrel driving riding wheel, a supporting frame, a slag receiving tank, a barrel axial positioning wheel, an outer protective cover, a power transmission system and the like. Wherein, the slag removing barrel of the bale breaking is internally provided with a material lifting plate, a spiral belt and a slag removing hole. The material lifting plate and the spiral belt are fixed on the inner wall of the bag scattering deslagging roller, the material lifting plate is fixed on the inner wall of the bag scattering deslagging roller, the deslagging eyelet is a through hole arranged on the bag scattering deslagging roller, a barrel roller path is fixed outside the bag scattering deslagging roller, the two roller paths fall on a barrel driving supporting wheel at the lower edge, the slag receiving groove is two inclined plates arranged at the outer lower half part of the bag scattering deslagging roller, a barrel axial positioning wheel is arranged on the central point of the lower part of the inner sides of the two outer roller paths of the bag scattering deslagging roller, and the feeding device is positioned at a feeding port of the bag scattering deslagging roller. Office waste paper enters a rotating bulk bag deslagging roller, a material lifting plate lifts the office waste paper to a certain height, the office waste paper falls (in a free falling body) and is collided on a spiral belt, the material lifting plate and the inner wall of a barrel body under the actions of throwing, pressing, smashing, extruding, poking, tearing and the like, meanwhile, the materials are conveyed by the spiral belt to further move forwards, the process is continuously repeated, so that the solid office waste paper is defibered, and hard particle impurities clamped between the office waste paper are separated from waste paper pulp; further, the office waste paper enters a coarse pulp tank, and the coarse pulp tank is used for carrying out dipping treatment on the office waste paper and preparing for the next step; further, office waste paper flows to the ultrasonic reactor from the coarse pulp tank, the ultrasonic reactor breaks down the office waste paper, and the office waste paper coarse pulp is broken down into office waste paper fine pulp to prepare for the next step (the action time of the ultrasonic reactor is 15 minutes, and the treatment concentration is less than or equal to 2%); further, office waste paper pulp flows to a good pulp tank from the ultrasonic reactor, and the good pulp tank stores the defibered office waste paper pulp and prepares for the next step; furthermore, office waste paper pulp flows to a fine screen from the good pulp tank (the concentration of the office waste paper pulp of the fine screen is controlled to be 0.8-1.2%), the fine screen screens office waste paper, large-particle impurities in the office waste paper solution are discharged, and adverse effects on papermaking in the follow-up process are prevented; further, office waste paper pulp flows to a flotation tank from a fine screen (the concentration of the office waste paper pulp in the flotation tank is controlled to be 0.8% -1.2%), wherein 0.3% of waste paper absolute dry biological enzyme, 0.2% of waste paper absolute dry H202 and 0.1% of waste paper absolute dry Na2Si03 are added into the flotation tank to complete the swelling of fibers, the dropping of ink and the passivation of heavy metal ions, so that ink particles and other hydrophobic particles float above the flotation tank and are discharged; and finally, the office waste paper pulp suspension in the flotation tank flows to a multi-disc thickener, the multi-disc thickener enables the concentration of the waste paper pulp to be high and stores the waste paper pulp in a pulp forming pool, and the office waste paper pulp solution is conveyed to a paper feeder for use through a variable frequency pulp pump.
In the embodiment, office waste paper is a large type of waste paper, the content of impurities is low, the wood pulp fiber content is high, the office waste paper contains a large amount of laser printing paper and electrostatic copy paper, and the good effect is achieved by adopting ultrasonic waves and biological enzymes to realize deinking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a process for deinking packaging paper by ultrasonic wave and biological enzyme cooperation.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that if the orientation or positional relationship indicated by the term "inside" or the like is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of describing the present invention and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, cannot be understood as limiting the present invention.
In the description of the embodiments of the present invention, "a plurality" represents at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, e.g., as being fixed, detachable, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
The embodiment provides a package paper ultrasonic wave and biological enzyme collaborative deinking process, which comprises the following steps:
a belt conveyer for conveying the waste paper containing the printing ink;
a bale breaking machine: receiving waste paper containing printing ink in the belt conveyor, scattering the waste paper containing printing ink to evacuate the waste paper and continuously transport the waste paper;
a coarse pulp tank: receiving waste paper containing ink scattered in a bale breaking machine, and performing pre-dipping treatment on the waste paper containing the ink;
an ultrasonic reactor: receiving waste paper pulp containing ink in a coarse pulp tank, and defibering the waste paper coarse pulp containing ink;
a good pulp tank: receiving the defibered ink waste paper in the ultrasonic reactor, and storing the ink waste paper pulp;
fine screening: receiving ink waste paper in a good pulp pond, and screening the ink waste paper to remove impurities in ink waste paper pulp;
a flotation tank: receiving the printing ink waste paper pulp in the fine screen, performing deinking treatment on the printing ink waste paper pulp, and discharging the printing ink separated from the waste paper pulp;
multi-disc concentrator: receiving the waste paper pulp suspension separated from the printing ink in the flotation tank, and increasing the concentration of the waste paper pulp solution.
In the above embodiment, a package paper ultrasonic wave and bio-enzyme collaborative deinking process includes a belt conveyer, a bale breaker, a coarse pulp tank, an ultrasonic reactor, a fine pulp tank, a fine screen, a flotation tank and a multi-disc thickener, and the belt conveyer, the bale breaker, the coarse pulp tank, the ultrasonic reactor, the fine pulp tank, the fine screen, the flotation tank and the multi-disc thickener are sequentially connected, wherein office waste paper is transported by the belt conveyer, and the office waste paper is transported to the bale breaker, wherein the bale breaker comprises a barrel, a feeding device, a barrel driving riding wheel, a supporting frame, a slag receiving tank, a barrel axial positioning wheel, an outer protective cover, a power transmission system and the like. Wherein, the slag removing barrel of the bale breaking is internally provided with a material lifting plate, a spiral belt and a slag removing hole. The material lifting plate and the spiral belt are fixed on the inner wall of the bag scattering deslagging roller, the material lifting plate is fixed on the inner wall of the bag scattering deslagging roller, the deslagging eyelet is a through hole arranged on the bag scattering deslagging roller, a barrel roller path is fixed outside the bag scattering deslagging roller, the two roller paths fall on a barrel driving supporting wheel at the lower edge, the slag receiving groove is two inclined plates arranged at the outer lower half part of the bag scattering deslagging roller, a barrel axial positioning wheel is arranged on the central point of the lower part of the inner sides of the two outer roller paths of the bag scattering deslagging roller, and the feeding device is positioned at a feeding port of the bag scattering deslagging roller. Office waste paper enters a rotating bulk bag deslagging roller, a material lifting plate lifts the office waste paper to a certain height, the office waste paper falls (in a free falling body) and is collided on a spiral belt, the material lifting plate and the inner wall of a barrel body under the actions of throwing, pressing, smashing, extruding, poking, tearing and the like, meanwhile, the materials are conveyed by the spiral belt to further move forwards, the process is continuously repeated, so that the solid office waste paper is defibered, and hard particle impurities clamped between the office waste paper are separated from waste paper pulp; further, the office waste paper enters a coarse pulp tank, and the coarse pulp tank is used for carrying out dipping treatment on the office waste paper and preparing for the next step; further, office waste paper flows to the ultrasonic reactor from the coarse pulp tank, the ultrasonic reactor breaks down the office waste paper, and the office waste paper coarse pulp is broken down into office waste paper fine pulp to prepare for the next step (the action time of the ultrasonic reactor is 15 minutes, and the treatment concentration is less than or equal to 2%); further, office waste paper pulp flows to a good pulp tank from the ultrasonic reactor, and the good pulp tank stores the defibered office waste paper pulp and prepares for the next step; furthermore, office waste paper pulp flows to a fine screen from the good pulp tank (the concentration of the office waste paper pulp of the fine screen is controlled to be 0.8-1.2%), the fine screen screens office waste paper, large-particle impurities in the office waste paper solution are discharged, and adverse effects on papermaking in the follow-up process are prevented; further, office waste paper pulp flows to a flotation tank from a fine screen (the concentration of the office waste paper pulp in the flotation tank is controlled to be 0.8% -1.2%), wherein 0.3% of waste paper absolute dry biological enzyme, 0.2% of waste paper absolute dry H202 and 0.1% of waste paper absolute dry Na2Si03 are added into the flotation tank to complete the swelling of fibers, the dropping of ink and the passivation of heavy metal ions, so that ink particles and other hydrophobic particles float above the flotation tank and are discharged; and finally, the office waste paper pulp suspension in the flotation tank flows to a multi-disc thickener, the multi-disc thickener enables the concentration of the waste paper pulp to be high and stores the waste paper pulp in a pulp forming pool, and the office waste paper pulp solution is conveyed to a paper feeder for use through a variable frequency pulp pump.
In the embodiment, office waste paper is a large type of waste paper, the content of impurities is low, the wood pulp fiber content is high, the office waste paper contains a large amount of laser printing paper and electrostatic copy paper, and the good effect is achieved by adopting ultrasonic waves and biological enzymes to realize deinking.
In some embodiments of the invention, an electromagnetic iron removal device is connected to the belt conveyor.
In this embodiment, the metal impurity discharge in the office waste paper can be through electromagnetism deironing device through the belt conveyor to office waste paper when passing through, prepares for follow-up papermaking.
In some embodiments of the invention, the bale breaker comprises a feed inlet and a discharge outlet, the feed inlet is connected with the belt conveyor, the discharge outlet is connected with the coarse pulp tank, and the feed inlet is provided with a water spraying assembly.
In this embodiment, in the bale breaking machine, it can make things convenient for follow-up discongent waste paper to drench office waste paper to moisten.
In some embodiments of the invention, the bale breaker comprises a feed inlet and a discharge outlet, the feed inlet is connected with the belt conveyor, the discharge outlet is connected with the coarse pulp tank, and the discharge outlet is provided with the slag collecting assembly.
In this embodiment, the discharge gate is installed and is collected the sediment subassembly and can be with bold impurity discharge in the office waste paper, for subsequent papermaking technology is ready.
In some embodiments of the invention, an ultrasonic reactor includes an ultrasonic generator, an ultrasonic transducer, and an ultrasonic reactor body.
In this embodiment, the ultrasonic reactor comprises supersonic generator, ultrasonic transducer and ultrasonic reactor body, and wherein the ultrasonic reactor body is used for fixed ultrasonic transducer, and ultrasonic reactor is used for fluffing office waste paper into the convenient subsequent papermaking of tiny granule fine pulp.
In some embodiments of the invention, a plurality of ultrasonic reactors are included, and any one ultrasonic generator is rated at 2 KW.
In this embodiment, the ultrasonic reactor can adjust the power of the ultrasonic action by adjusting the load factor and the amplitude ratio, and a plurality of ultrasonic reactors can be used in parallel according to the yield.
In some embodiments of the present invention, the reaction chamber is further included, the ultrasonic reactor is located in the reaction chamber, any one of the reaction chambers is provided with a plurality of through holes, and any two adjacent reaction chambers are communicated through the through holes.
In this embodiment, ultrasonic reactor is located the reacting chamber, and ultrasonic reactor is broken apart office waste paper in the reacting chamber, and office waste paper solution passes through a plurality of through-hole circulations.
In some embodiments of the invention, the diameter of the through hole is 80 mm, the reaction chamber is communicated with the coarse pulp tank through the through hole, and the reaction chamber is communicated with the fine pulp tank through the through hole.
In this embodiment, the aperture of the through hole of the reaction chamber is 80 mm, and the office waste paper solution can flow through the through hole.
In some embodiments of the invention, the flotation tank includes 1.2% by oven dry waste paper surfactant and 1% by oven dry waste paper bleach.
In this example, the flotation tank contains 1.2% of surfactant and 1% of bleaching agent, which can better deink office waste paper containing ink.
In some embodiments of the invention, the temperature in the fine screen is from 40 ℃ to 50 ℃ and the temperature in the flotation cell is from 40 ℃ to 50 ℃.
In the embodiment, the temperature in the fine screen is 40-50 ℃, and the temperature in the flotation tank is 40-50 ℃, so that the biological enzymes in the fine screen and the flotation tank can better survive.
In some embodiments of the present invention, the,
compared with the conventional deinking method, the deinking whiteness of the ultrasonic wave synergistic biological enzyme is improved by 7 percent ISO, and the ink removal rate is improved by 34.47 percent. The main physical indexes are as follows: the burst index is improved by 27.6 percent, the tensile index is improved by 38.69 percent, and the ring crush is improved by 41.87 percent. The concentration of ultrasonic pulping is 2%, the retention time is 15min, the temperature is 45 ℃, the ultrasonic pulping is very suitable for the action time of biological enzyme, and the ultrasonic acting force moderating and the breaking mainly comprises defibering and is rarely cut off.
In summary, the embodiment of the present invention provides a package paper ultrasonic wave and bio-enzyme collaborative deinking process, comprising the following steps:
a belt conveyer for conveying the waste paper containing the printing ink;
a bale breaking machine: receiving waste paper containing printing ink in the belt conveyor, scattering the waste paper containing printing ink to evacuate the waste paper and continuously transport the waste paper;
a coarse pulp tank: receiving waste paper containing ink scattered in a bale breaking machine, and performing pre-dipping treatment on the waste paper containing the ink;
an ultrasonic reactor: receiving waste paper pulp containing ink in a coarse pulp tank, and defibering the waste paper coarse pulp containing ink;
a good pulp tank: receiving the defibered ink waste paper in the ultrasonic reactor, and storing the ink waste paper pulp;
fine screening: receiving ink waste paper in a good pulp pond, and screening the ink waste paper to remove impurities in ink waste paper pulp;
a flotation tank: receiving the printing ink waste paper pulp in the fine screen, performing deinking treatment on the printing ink waste paper pulp, and discharging the printing ink separated from the waste paper pulp;
multi-disc concentrator: receiving the waste paper pulp suspension separated from the printing ink in the flotation tank, and increasing the concentration of the waste paper pulp solution.
In the above embodiment, a package paper ultrasonic wave and bio-enzyme collaborative deinking process includes a belt conveyer, a bale breaker, a coarse pulp tank, an ultrasonic reactor, a fine pulp tank, a fine screen, a flotation tank and a multi-disc thickener, and the belt conveyer, the bale breaker, the coarse pulp tank, the ultrasonic reactor, the fine pulp tank, the fine screen, the flotation tank and the multi-disc thickener are sequentially connected, wherein office waste paper is transported by the belt conveyer, and the office waste paper is transported to the bale breaker, wherein the bale breaker comprises a barrel, a feeding device, a barrel driving riding wheel, a supporting frame, a slag receiving tank, a barrel axial positioning wheel, an outer protective cover, a power transmission system and the like. Wherein, the slag removing barrel of the bale breaking is internally provided with a material lifting plate, a spiral belt and a slag removing hole. The material lifting plate and the spiral belt are fixed on the inner wall of the bag scattering deslagging roller, the material lifting plate is fixed on the inner wall of the bag scattering deslagging roller, the deslagging eyelet is a through hole arranged on the bag scattering deslagging roller, a barrel roller path is fixed outside the bag scattering deslagging roller, the two roller paths fall on a barrel driving supporting wheel at the lower edge, the slag receiving groove is two inclined plates arranged at the outer lower half part of the bag scattering deslagging roller, a barrel axial positioning wheel is arranged on the central point of the lower part of the inner sides of the two outer roller paths of the bag scattering deslagging roller, and the feeding device is positioned at a feeding port of the bag scattering deslagging roller. Office waste paper enters a rotating bulk bag deslagging roller, a material lifting plate lifts the office waste paper to a certain height, the office waste paper falls (in a free falling body) and is collided on a spiral belt, the material lifting plate and the inner wall of a barrel body under the actions of throwing, pressing, smashing, extruding, poking, tearing and the like, meanwhile, the materials are conveyed by the spiral belt to further move forwards, the process is continuously repeated, so that the solid office waste paper is defibered, and hard particle impurities clamped between the office waste paper are separated from waste paper pulp; further, the office waste paper enters a coarse pulp tank, and the coarse pulp tank is used for carrying out dipping treatment on the office waste paper and preparing for the next step; further, office waste paper flows to the ultrasonic reactor from the coarse pulp tank, the ultrasonic reactor breaks down the office waste paper, and the office waste paper coarse pulp is broken down into office waste paper fine pulp to prepare for the next step (the action time of the ultrasonic reactor is 15 minutes, and the treatment concentration is less than or equal to 2%); further, office waste paper pulp flows to a good pulp tank from the ultrasonic reactor, and the good pulp tank stores the defibered office waste paper pulp and prepares for the next step; furthermore, office waste paper pulp flows to a fine screen from the good pulp tank (the concentration of the office waste paper pulp of the fine screen is controlled to be 0.8-1.2%), the fine screen screens office waste paper, large-particle impurities in the office waste paper solution are discharged, and adverse effects on papermaking in the follow-up process are prevented; further, office waste paper pulp flows to a flotation tank from a fine screen (the concentration of the office waste paper pulp in the flotation tank is controlled to be 0.8% -1.2%), wherein 0.3% of waste paper absolute dry biological enzyme, 0.2% of waste paper absolute dry H202 and 0.1% of waste paper absolute dry Na2Si03 are added into the flotation tank to complete the swelling of fibers, the dropping of ink and the passivation of heavy metal ions, so that ink particles and other hydrophobic particles float above the flotation tank and are discharged; and finally, the office waste paper pulp suspension in the flotation tank flows to a multi-disc thickener, the multi-disc thickener enables the concentration of the waste paper pulp to be high and stores the waste paper pulp in a pulp forming pool, and the office waste paper pulp solution is conveyed to a paper feeder for use through a variable frequency pulp pump.
In the embodiment, office waste paper is a large type of waste paper, the content of impurities is low, the wood pulp fiber content is high, the office waste paper contains a large amount of laser printing paper and electrostatic copy paper, and the good effect is achieved by adopting ultrasonic waves and biological enzymes to realize deinking.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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.