CN210085905U

CN210085905U - Waste paper pulping light slag treatment system

Info

Publication number: CN210085905U
Application number: CN201920814760.4U
Authority: CN
Inventors: 韩冲; 王夫亮; 杨文恒
Original assignee: Nine Dragons Paper Holdings Ltd
Current assignee: Nine Dragons Paper Holdings Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-02-18
Anticipated expiration: 2029-05-31

Abstract

The application provides a waste paper pulping light slag processing system, including hydrapulper, riddle device, repulper, flotation scarfing cinder machine, seam formula drum sieve, baling press, scarfing cinder flotation workshop, waste paper process hydrapulper handle the tail thick liquid after send to repulper, repulper's tail thick liquid carry to seam formula drum sieve, repulper's good thick liquid loopback to hydrapulper, hydrapulper's good thick liquid carry to the riddle device, the tail thick liquid of riddle device carry to flotation scarfing cinder machine, flotation scarfing cinder machine's tail thick liquid carry to seam formula drum sieve, flotation scarfing cinder machine's good thick liquid loopback to hydrapulper, seam formula drum sieve's thick liquid loopback to hydrapulper, the hydropulper's thick liquid loopback to hydrapulper, seam formula drum sieve's tail thick liquid that contains plastic sheet and undissociated scraps of paper carry to the good thick liquid, and the packer sends the tail pulp of the slot type cylindrical screen to the slag removal flotation workshop.

Description

Waste paper pulping light slag treatment system

Technical Field

The application relates to a waste paper pulping light slag treatment system.

Background

In the prior art, impurities in the waste paper are parts needing to be removed in waste paper pulping, and particularly light residues with lower density than fibers, such as plastics and foams, are included. At present, a system for treating light slag in waste paper pulping mainly comprises a hydraulic pulper system and a roughing system, the association of the two systems is small, and the independence is strong, for example, light slag treatment equipment of the pulping system comprises a re-crusher, a high-level box, a cylindrical screen and the like, and light slag treatment equipment of the roughing system comprises a flotation slag cleaner, an impurity separator and the like, so that the light slag treatment equipment is more in distribution and larger in occupied area, the management of the equipment is not facilitated, and the treatment power consumption is higher.

Disclosure of Invention

The technical problem that this application will be solved provides a waste paper slurrying light sediment processing system.

In order to solve the technical problem, the application provides a light residue treatment system for pulping waste paper, the system comprises a hydrapulper, a coarse screen device, a re-crusher, a flotation slag remover, a slit-type cylindrical screen, a packaging machine and a slag removing flotation workshop, tail pulp of the waste paper passing through the hydrapulper is sent to the re-crusher, tail pulp of the re-crusher is sent to the slit-type cylindrical screen, good pulp of the re-crusher is sent back to the hydrapulper, good pulp of the hydrapulper is sent to the coarse screen device, tail pulp of the coarse screen device is sent to the flotation slag remover, tail pulp of the flotation slag remover is sent to the slit-type cylindrical screen, good pulp of the flotation slag remover is sent back to the hydrapulper, good pulp of the slit-type cylindrical screen is sent back to the hydrapulper, the tail pulp of the slit-type cylindrical screen containing plastic sheets and tail pulp which is not dissociated are sent to the packaging machine, the packer sends the tail pulp of the slot type cylindrical screen to the slag removal flotation workshop, the slag removal flotation workshop is used for separating plastic sheets and paper sheets in the tail pulp, and the paper sheets in the slag removal flotation workshop are returned to the hydrapulper.

Preferably, the screen holes of the slot type cylindrical screen are in a slot shape, and the slot width of the screen holes is 0.1-0.3 cm.

Preferably, the system further comprises a pulping device, and the accept of the coarse screening device is sent to the pulping device.

Preferably, the pulping device comprises a grading unit, a purifying unit, a fine screening unit, a heat dispersion unit and a refining unit which are arranged in sequence.

Preferably, the system further comprises a high-consistency desander, the high-consistency desander is arranged between the hydrapulper and the coarse screening device, the good pulp of the hydrapulper is processed by the high-consistency desander, and the good pulp of the high-consistency desander is conveyed to the coarse screening device.

Preferably, the system further comprises a slag extractor, and tailings of the high-concentration sand remover are conveyed to the slag extractor.

Preferably, the system further comprises a chain scraper, through which the used paper is conveyed to the hydropulper.

According to the waste paper pulping light slag treatment system, the slotted cylinder screen is used for replacing the hole type cylinder screen and the impurity separator at the same time to uniformly treat light slag of the pulping system and the roughing system, so that the equipment cost, the maintenance cost and the power consumption are saved; the invention has the advantages of small occupied area, high resource reuse rate and environmental friendliness.

Drawings

FIG. 1 is a schematic structural diagram of a waste paper pulping light slag treatment system.

Detailed Description

The present application is further described below in conjunction with the following figures and specific examples to enable those skilled in the art to better understand the present application and to practice it, but the examples are not intended to limit the present application.

As shown in the figure, the application provides a waste paper pulping light slag treatment system, which comprises a chain plate machine, a hydraulic pulper, a coarse screening device, a re-crusher, a flotation slag remover, a slot type cylindrical screen, a packaging machine and a slag removal flotation workshop.

Waste paper is conveyed to the hydrapulper through the chain plate machine, tail pulp of the hydrapulper is conveyed to a re-pulper, tail pulp of the re-pulper is conveyed to the slit type cylindrical screen, good pulp of the re-pulper is returned to the hydrapulper, good pulp of the hydrapulper is conveyed to the coarse screen device, tail pulp of the coarse screen device is conveyed to the flotation slag cleaner, tail pulp of the flotation slag cleaner is conveyed to the slit type cylindrical screen, good pulp of the flotation slag cleaner is returned to the hydrapulper, good pulp of the slit type cylindrical screen is returned to the hydrapulper, tail pulp of the slit type cylindrical screen, which contains plastic sheets and undissociated paper sheets, is conveyed to a packing machine, tail pulp of the slit type cylindrical screen is conveyed to the slag cleaning workshop by the packing machine, and the settling speeds of the plastic sheets and the paper sheets are different, the paper sheet is further separated from the plastic sheet, which can be sold. The paper sheet is returned to the pulper for pulping. And the paper sheets of the slag removal flotation workshop are returned to the hydrapulper.

The system still include the high enriched desander, the high enriched desander locate hydrapulper with the coarse screen device between, the good thick liquid of hydrapulper pass through the high enriched desander handle, the good thick liquid of high enriched desander carry to the coarse screen device. The system also comprises a slag extractor, and tailings of the high-concentration sand remover are conveyed to the slag extractor. Wherein, the disintegrating concentration of the hydrapulper is about 5 percent, the temperature is about 50 ℃, the treatment concentration of the flotation slag remover is 2 to 3 percent, the treatment concentration of the slot type cylinder screen is 3 to 5 percent, and the concentration can be adjusted by using dilution water and spray water when the concentration is too high.

The screen holes of the slit type cylindrical screen are slit-shaped, and the slit width of each screen hole is 0.1-0.3 cm. The slot type cylinder screen can replace a hole type cylinder screen and an impurity separator at the same time, and the power consumption can be saved by more than 70%.

The system also comprises a pulping device, and the good pulp of the coarse screening device is sent to the pulping device. The pulping device comprises a grading unit, a purifying unit, a fine screening unit, a heat dispersion unit and a pulping unit which are arranged in sequence. And (4) finally forming the fine pulp of the coarse screening device into pulp through the pulp forming device.

The above-described embodiments are merely preferred embodiments for fully illustrating the present application, and the scope of the present application is not limited thereto. The equivalent substitution or change made by the person skilled in the art on the basis of the present application is within the protection scope of the present application. The protection scope of this application is subject to the claims.

Claims

1. A light slag treatment system for pulping waste paper is characterized by comprising a hydrapulper, a coarse screening device, a re-crusher, a flotation slag remover, a slit type cylindrical screen, a packer and a slag removal flotation workshop,

tail pulp of the waste paper processed by the hydrapulper is sent to a re-pulper, the tail pulp of the re-pulper is sent to the slit type cylindrical screen, and good pulp of the re-pulper is sent back to the hydrapulper,

the good pulp of the hydropulper is conveyed to the coarse screening device, the tail pulp of the coarse screening device is conveyed to the flotation slag cleaner, the tail pulp of the flotation slag cleaner is conveyed to the slit-type cylindrical screen, the good pulp of the flotation slag cleaner is returned to the hydropulper,

the good pulp of the slot type cylindrical sieve is returned to the hydrapulper, the tail pulp of the slot type cylindrical sieve, which contains plastic sheets and undissociated paper pieces, is conveyed to a packing machine, the packing machine sends the tail pulp of the slot type cylindrical sieve to the slag removal flotation workshop, the slag removal flotation workshop is used for separating the plastic sheets and the paper pieces in the tail pulp, and the paper pieces of the slag removal flotation workshop are returned to the hydrapulper.

2. The light slag processing system for pulping waste paper as claimed in claim 1, wherein the screen holes of the slot type cylindrical screen are in a slot shape, and the slot width of the screen holes is 0.1-0.3 cm.

3. The system for light slag processing in pulping of waste paper as claimed in claim 1, wherein the system further comprises a pulp forming device, and the accept of the coarse screening device is sent to the pulp forming device.

4. The system for treating light dregs generated in pulping waste paper as claimed in claim 3, wherein the pulping device comprises a classification unit, a purification unit, a fine screening unit, a heat dispersion unit and a refining unit which are arranged in sequence.

5. The system of claim 1, further comprising a high consistency desander, the high consistency desander being disposed between the hydrapulper and the coarse screen apparatus, the accepts of the hydrapulper being processed by the high consistency desander, the accepts of the high consistency desander being delivered to the coarse screen apparatus.

6. The system for treating light dregs generated in pulping waste paper as claimed in claim 5, wherein the system further comprises a dregs extractor, and the tailings of the high-consistency sand remover are conveyed to the dregs extractor.

7. The used paper pulping light slag processing system of claim 1, further comprising a chain plate machine through which used paper is conveyed to the hydrapulper.