CN101135117A

CN101135117A - Paper pulp raw material cleaning treating method

Info

Publication number: CN101135117A
Application number: CNA200710189676XA
Authority: CN
Inventors: 刘洁
Original assignee: HUAXIAN HUASEN PAPER INDUSTRY Co Ltd
Current assignee: Fujian Qingshan Paper Limited by Share Ltd
Priority date: 2007-10-08
Filing date: 2007-10-08
Publication date: 2008-03-05
Anticipated expiration: 2027-10-08
Also published as: CN101135117B

Abstract

The present invention relates to clean paper pulp material treating process, which includes rolling the biomass material on one netted belt, setting into sandwiched net and sucking impurity with strong blast, ultrasonic washing, spraying with hot water, and extruding in a screw extruder to 30 % dryness to obtain paper pulp material. The process has less damage to fiber, high paper pulp yield, low water consumption, capacity of preventing iron ion and non-ferrous metal ion from entering paper pulp and raised paper pulp whiteness.

Description

Paper pulp raw material cleaning treating method

One, technical field

The present invention relates to field of papermaking, particularly a kind of paper pulp raw material cleaning treating method.

Two, background technology

In paper, paper pulp raw material, as dogstail, wheat straw, the cleaning of wood chip etc. (general name raw material, as follows) is absolutely necessary, and existing processing method is after prescinding with shredding machine earlier, with vibrating screen most of impurity sieve is gone, carry out Chemical cleaning with chemical again, but find in practice, after this method is handled, dedusting is not thorough first, after some impurity enter the making flow process, strengthened boiling and bleaching with the amount of industrial chemicals, increased boiling and bleaching time, also increased intractability simultaneously, strengthened production cost, on the other hand, straw has been cut off, artificial destruction the length of fiber, increase the quantity of short and small fiber, reduced slurry yield and pulp quality, increased the sewage disposal expense, therefore, how paper pulp raw material is carried out cleaning is a great problem in the paper always.

Three, summary of the invention

At above-mentioned situation, the present invention's purpose just provides a kind of paper pulp raw material cleaning treating method, can effectively solve high-quality, cheaply to the cleaning problem of paper grade (stock) fiber, the technical scheme of its solution is, evenly be placed on the guipure biomass material, carry out rolling the first time stone roller, vibrate through vibrating frame, blow away impurity with high wind simultaneously, carry out again rolling the second time and grind and the vibrating frame vibration, impurity on the suction and pumping dogstail, roll stone roller more for the third time, enter the folder net then, with the high wind impurity on the stripping raw material once more, insert ultrasonic cleaning equipment afterwards, utilize the cavitation of ultrasonic wave in liquid and the power of supersonic generator generation, import in the water that does not add any chemical, the countless micro-bubbles of continuously rapid formation and rapid closing, make it to produce powerful mechanical force, constantly impact the raw material body, ultrasonic wave has accelerate dissolution and emulsification in water in addition, the dirt that makes the raw material surface and roll in the slit of grinding the back generation peels off rapidly, after coming out from ultrasonic cleaning equipment (claiming rinse bath again), carry out the heat water-spraying again, raw material per ton enters on the 20 meters long flushing guipure, the flushing of rolling limit, limit, preceding 10 meters with 10 seconds of hydraulic giant jet douche from bottom to top, 10 seconds of hydraulic giant jet douche are used for 10 meters from top to bottom in the back, and afterwards, raw material enters the oblique railing in plane and holds together in the materials device,, promptly can be used as paper pulp raw material and enter reactor slurrying after to be depressed into moisture be 30% mass dryness fraction through screw extruder.

This equipment has been broken the cleaning mode of traditional dried wet method raw material, reduced artificial fibre damage, both improved fibre length, increased pulping yield again, this equipment has improved greatly washes careless water-use efficiency, reduced significantly and washed careless water consumption, stopped coloured elements such as iron ion simultaneously and entered the slurrying flow process, improved pulp brightness.

Four, the specific embodiment

Below in conjunction with concrete condition the present invention is elaborated.

In the specific implementation, processing method of the present invention is implemented with following form, at first with raw material, as wheat straw, dogstail evenly is placed on the guipure, thickness 1.5-2.5cm, be equipped with three groups on the guipure successively and roll roller (guipure and roll stone roller) by driven by motor, raw material is carried out three times roll stone roller, roll for the first time and enter the eccentric wheel frame sieve that shakes behind the stone roller, make raw material be in the motion oscillations state, the impurity that while is pulverized by the high wind stripping, again raw material is carried out rolling the second time stone roller, secondary enters eccentric wheel vibrating frame sieve, once more the impurity on the raw material being carried out high wind under the motion oscillations state blows down, afterwards, roll stone roller for the third time, enter folder Netcom road (promptly by last after rolling stone roller, the material channel that down two-layer folder net constitutes), and inhale the impurity take off on the raw material with the high wind that is equivalent to more than 8 grades, after 3 above-mentioned dry method removal of impurity, raw material is sent in 20 meters long ultrasonic cleaning equipments, carry out wet dedusting again, be that raw material is in ultrasonic cleaning equipment in the water of vibration, utilize the cavitation of ultrasonic wave in liquid, water in the storage compartment in the device is continuously formed and the countless micro-bubbles of rapid closing rapidly, the powerful mechanical force of utilizing bubble to produce, constantly impact the raw material body, the dirt that makes the raw material surface and roll in the slit of grinding the back generation peels off rapidly, realize further cleaning dedusting, raw material after coming out from ultrasonic cleaning equipment is carried out the heat water-spraying again, water temperature is 60-80 ℃, each 10M of two stages (length overall 20M) carries out before and after dividing, first section 10M sprays from bottom to top with water pistol, 10M sprays from the top down with hydraulic giant for the second time, during spray, with the raw material speed of service per ton is (i.e. 10 meters long 10 seconds of need 1M/ second, spraying 1 ton of raw material) raw material after will spraying sends into the oblique railing in plane and holds together glassware and (promptly hold together material, especially big as a charging aperture, the cone of dress spiral extruder in discharging is young) draws extruding in, making its mass dryness fraction is 30%, promptly become the paper pulp raw material of handling well, can enter and carry out slurrying in the reactor.

Said ultrasonic liquid cleaning device is that settling tank is arranged at the cylindrical shell bottom, the fixed head of band permeable hole is housed on the settling tank, waterproof ultrasonic transducer (city is on sale) is housed on the fixed head, be equipped with oscillating screen plate on the ultrasonic transducer, it above the oscillating screen plate storage compartment, the waterproof ultrasonic transducer can be 20 groups, and 5 every group, every 100cm adorns one group.

Can clearly find out by above-mentioned; clean paper pulp raw material of the present invention; broken traditional mode fully; it is a kind of processing method of pure physics; reduced artificial fibre damage; reduce the quantity of staple fibre; the slurrying rate improves more than 30%, saves and washes raw material water 2-3 doubly, reduces the wastewater treatment expense more than 60%; and environmentally safe; meet fully in the paper requirement on environmental protection, its effect good, unexpectedly; of the present invention succeeding in developing is the great creative contribution to paper-making industry.

Claims

1. paper pulp raw material cleaning treating method, it is characterized in that, at first evenly be placed on the raw material wheat straw on the guipure, thickness 1.5-2.5cm, be equipped with three groups on the guipure successively and roll roller, raw material is carried out three times roll stone roller, roll for the first time and enter the eccentric wheel frame that shakes behind the stone roller, make raw material be in the motion oscillations state, the impurity that while is pulverized by the high wind stripping, again raw material is carried out rolling the second time stone roller, secondary enters eccentric wheel vibrating frame sieve, once more the impurity on the raw material being carried out high wind under the motion oscillations state blows down, afterwards, roll stone roller for the third time, enter folder Netcom road after rolling stone roller, and with the impurity on the high wind stripping raw material that is equivalent to more than 8 grades, after 3 above-mentioned dry method removal of impurity, raw material is sent in 20 meters long ultrasonic cleaning equipments, carry out wet dedusting again, utilize the cavitation of ultrasonic wave in liquid, water in the storage compartment in the device is continuously formed and the countless micro-bubbles of rapid closing rapidly, the powerful mechanical force of utilizing bubble to produce, constantly impact the raw material body, the dirt that makes the raw material surface and roll in the slit of grinding the back generation peels off rapidly, realize further cleaning dedusting, raw material after coming out from ultrasonic cleaning equipment is carried out the heat water-spraying again, water temperature is that each 10M of two stages carries out before and after the 60-80 ℃ of branch, first section 10M sprays from bottom to top with water pistol, and 10M sprays from the top down with hydraulic giant for the second time, during spray, with the raw material speed of service per ton is that raw material after 1M/ will spray second is sent into the oblique railing in plane and held together to draw extruding in the glassware in, making its aridity is 30%, promptly becomes the paper pulp raw material of handling well, can enter to carry out slurrying in the reactor.

2. paper pulp raw material cleaning treating method according to claim 1, it is characterized in that, said ultrasonic liquid cleaning device is that settling tank is arranged at the cylindrical shell bottom, the fixed head of band permeable hole is housed on the settling tank, the waterproof ultrasonic transducer is housed on the fixed head, be equipped with oscillating screen plate on the ultrasonic transducer, it above the oscillating screen plate storage compartment, the waterproof ultrasonic transducer is 20 groups, and 5 every group, every 100cm adorns one group.