CN219385787U - Recovery device for high-wet-strength damaged paper of household paper - Google Patents

Abstract

The utility model relates to a recovery device of high-wet-strength damaged paper of household paper, which comprises a pulping tank (1), a chemical auxiliary agent adding pipeline (13) and a heating component, wherein the chemical auxiliary agent adding pipeline (13) is positioned above the pulping tank (1); the heating component comprises a secondary steam pipeline (15) provided with a secondary steam valve (14); the tank wall of the pulping tank (1) is provided with a discharging component for discharging the slurry, and the pulping tank (1) is internally provided with a stirring component for stirring the slurry. Compared with the prior art, the utility model utilizes the secondary steam generated by the paper machine to heat the liquid in the pulping tank, fully utilizes the secondary steam originally discharged as waste, avoids energy waste, reduces production cost and improves the income of companies.

Description

Recovery device for high-wet-strength damaged paper of household paper

Technical Field

The utility model relates to the technical field of papermaking, in particular to a recovery device for high-wet-strength damaged paper of household paper.

Background

The high wet strength broke of the paper making process comprises cut edges of the paper making process, roll bottom broke left when the base paper is cut, scraps produced when finished products are processed, and paper left by sampling in the paper machine production process. The recovery treatment of the high-wet-strength damaged paper of the household paper can provide raw material sources for a papermaking production line, reduce pulp consumption and save cost.

The whole high wet strength broke is mainly crushed in equipment with high mechanical energy, the wet strength resin adsorbed on the carboxyl of the fiber can be dissociated by the addition of the chemical auxiliary agent to form covalent bond with carbon of the organic molecule, so that chlorinated hydrocarbon is formed, and the chlorinated hydrocarbon can be removed from paper stock or resin aqueous solution by adsorption of activated carbon, thereby achieving the effect of treating the high wet strength resin and providing dispersed and unfoamed slurry supply for papermaking.

However, the existing high-wet-strength broke treatment adopts mechanical stirring, and chemical auxiliary agents are added for dissociation, so that the treatment time is long, the treatment efficiency is low, the mechanical energy consumption is high, and the production cost is increased.

Disclosure of Invention

The utility model aims to overcome at least one of the defects in the prior art and provide a recovery device for high-wet-strength damaged paper of household paper. The recovery device utilizes the secondary steam generated by the paper machine to heat the liquid in the pulping tank, changes waste into valuable, avoids energy waste and reduces production cost.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a recovery unit of high wet strength broke of household paper, this device includes the pulping vat, and is located chemical auxiliary agent adding pipeline and heating element above the pulping vat; the slurry crushing tank is characterized in that a discharging component for discharging slurry is arranged on the wall of the slurry crushing tank, and a stirring component for stirring the slurry is arranged in the slurry crushing tank. More specifically, the paper making of the household paper is neutral paper making, and the resin for increasing the wet strength of the base paper is polyamide polyamine-epichlorohydrin resin, so the chemical auxiliary agent added into the pulping tank is potassium peroxodisulfate.

Further, the heating component comprises a secondary steam pipeline provided with a secondary steam valve. More specifically, the liquid heating source in the pulping tank is secondary steam discharged outside the paper machine.

Further, the stirring assembly comprises a stirrer cutter head and a stirrer motor which are connected; the stirrer cutterhead is positioned in the pulping tank, and the stirrer motor is positioned outside the pulping tank.

Further, the discharging assembly comprises a discharging pipeline connected with the pulping tank, and a discharging valve and a discharging pump which are arranged on the discharging pipeline; the discharge pump is positioned at one side of the discharge valve, which is far away from the pulping tank. In some embodiments of the utility model, the discharge valve is a solenoid valve.

Further, the apparatus also includes a white water adding assembly for adding white water to the pulping tank. In certain embodiments of the present utility model, the white water addition assembly is located above the pulping vat.

Further, the white water adding component comprises a white water pipeline connected with the pulping groove, a white water pump motor and a white water pipeline valve which are arranged on the white water pipeline; the white water pump motor is positioned at one side of the white water pipeline valve far away from the pulping groove. In some embodiments of the utility model, the white water line valve is selected as a solenoid valve.

Further, the apparatus includes a high wet strength broke transfer assembly for adding high wet strength broke to the shredding vessel. In certain embodiments of the utility model, the high wet strength broke conveying assembly is located above the shredding vat.

Further, the high wet strength broke conveying assembly is located on the plate conveyor above the pulping tank.

Further, a thermometer (16) is arranged on the wall of the pulping groove (1). The thermometer can show the temperature in the pulping tank (1) in real time, and is convenient for controlling the reaction temperature.

Further, a liquid level meter (9) is arranged on the wall of the pulping groove (1). The liquid level meter can display the volume of the slurry in the slurry breaking tank (1) in real time.

Compared with the prior art, the utility model utilizes the secondary steam generated by the paper machine to heat the liquid in the pulping tank, fully utilizes the secondary steam originally discharged as waste, avoids energy waste, reduces production cost and improves the income of companies.

Drawings

FIG. 1 shows a recycling device for high wet strength broke of household paper used in the examples;

the reference numerals in the figures indicate: 1-a pulping tank; 2-high wet strength broke; 3-plate linkage machine; 4-a discharge pipeline; 5-a discharge pump; 6-a discharge valve; 7-a stirrer cutterhead; 8-an agitator motor; 9-a liquid level meter; 10-white water pipeline; 11-white water pump motor; 12-white water pipeline valve; 13-a chemical auxiliary adding pipeline; 14-a secondary steam valve; 15-a secondary steam pipeline; 16-thermometer.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present utility model is not limited to the following embodiments.

Examples

As shown in fig. 1, the recovery device for the high-wet-strength broke of the household paper comprises a pulping tank 1, a chemical auxiliary adding pipeline 13 and a heating assembly, wherein the chemical auxiliary adding pipeline 13 and the heating assembly are positioned above the pulping tank 1.

The heating assembly comprises a secondary steam line 15 provided with a secondary steam valve 14. The apparatus further comprises a white water adding assembly located above the size reduction tank 1. The white water adding assembly comprises a white water pipeline 10 connected with the pulping tank 1, a white water pump motor 11 and a white water pipeline valve 12 which are arranged on the white water pipeline 10; the white water pump motor 11 is located at the side of the white water pipe valve 12 remote from the pulp crushing tank 1. The apparatus further comprises a stirring assembly located at the bottom of the slurry tank 1. The stirring assembly comprises a stirrer cutter head 7 and a stirrer motor 8 which are connected; the agitator cutterhead 7 is located inside the slurry tank 1 and the agitator motor 8 is located outside the slurry tank 1. The apparatus further comprises a discharge assembly located at the bottom of the vat 1. The discharging assembly comprises a discharging pipeline 4 connected with the pulping tank 1, and a discharging valve 6 and a discharging pump 5 which are arranged on the discharging pipeline 4; the discharge pump 5 is positioned on the side of the discharge valve 6 remote from the slurry tank 1. The apparatus comprises a high wet strength broke transfer assembly located above the shredding vat 1. The high wet strength broke conveying assembly is located in the chain scraper 3 above the pulping vat 1.

The utility model provides a recovery unit of high wet strength broke of paper for daily use, this device includes pulping vat 1, and chemical auxiliary adding pipeline 13 and is used for heating the heating element of thick liquid in pulping vat 1; the wall of the pulping tank 1 is provided with a discharging component for the outflow of the slurry, and the pulping tank 1 is internally provided with a stirring component for stirring the slurry.

The heating assembly comprises a secondary steam line 15 provided with a secondary steam valve 14. The stirring assembly comprises a stirrer cutter head 7 and a stirrer motor 8 which are connected; the agitator cutterhead 7 is located inside the slurry tank 1 and the agitator motor 8 is located outside the slurry tank 1. The discharging assembly comprises a discharging pipeline 4 connected with the pulping tank 1, and a discharging valve 6 and a discharging pump 5 which are arranged on the discharging pipeline 4; the discharge pump 5 is positioned on the side of the discharge valve 6 remote from the slurry tank 1. The apparatus further comprises a white water adding assembly for adding white water to the pulping vat 1. The white water adding assembly comprises a white water pipeline 10 connected with the pulping tank 1, a white water pump motor 11 and a white water pipeline valve 12 which are arranged on the white water pipeline 10; the white water pump motor 11 is located at the side of the white water pipe valve 12 remote from the pulp crushing tank 1. The apparatus further includes a high wet strength broke transfer assembly for adding high wet strength broke to the shredding vessel. The high wet strength broke transfer assembly comprises a link plate machine 3 located above the shredding vat 1. The wall of the pulping groove 1 is provided with a thermometer 16. The wall of the pulping tank 1 is provided with a liquid level meter 9. The white water pipeline valve 12 and the discharging valve 6 are electromagnetic valves.

The specific working process is as follows:

1) Starting the white water pump motor 11, opening the white water pipeline valve 12, leading the white water pipeline 10 to the crushing tank 1, closing the white water pipeline valve 12 when the white water reaches 50% liquid level 9, and closing the white water pump motor 11;

2) Opening a secondary steam valve 14 on a secondary steam pipeline 15 to heat the pulping tank 1, wherein the volume of the pulping tank 1 is 17 cubic meters, and closing the secondary steam valve 14 when the temperature of the pulping tank 1 rises to 80 ℃;

3) Starting the stirrer motor 8, and enabling the stirrer cutter disc 7 to work and rotate;

4) Starting a chain plate machine 3 to throw the high-wet-strength broke 2 into the pulping tank 1 for stirring;

5) Starting the white water pump motor 11, opening the white water pipeline valve 12, closing the white water pipeline valve 12 when the liquid level meter 9 reaches 80%, and closing the white water pump motor 11;

6) 3 kg of potassium disulfate is added through a chemical auxiliary agent adding pipeline;

7) After stirring for 60 minutes by the stirrer cutter head 7, starting the discharge pump 5, opening the discharge valve 6, stopping the discharge pump 5 when the liquid level of the pulping tank is 9 to 30 percent, closing the discharge valve 6, starting the white water pump motor 11, and opening the white water pipeline valve 12 to enable the liquid level 9 to reach 50 percent;

8) And starting the discharge pump motor 5, opening the discharge valve 6, and closing the discharge pump motor 5 and closing the discharge valve 6 when the number of the liquid level meter 9 is 0.

Comparative example

The comparative example is substantially the same as the example, except that no secondary steam heating is performed, and 4 kg of a hypochlorous acid solution having a concentration of 11wt% and 4 kg of sodium sulfite crystals are used as the chemical auxiliary.

In actual production, the type and the quantity of the chemical auxiliary agents are heated and changed by the recovery device of the high-wet-strength damaged paper of the household paper, so that the breaking time can be shortened and the cost of the chemical auxiliary agents can be reduced.

Comparative example treatment efficiency: the primary time of the crushing is 150 minutes, 4 kg of hypochlorous acid and 4 kg of sodium sulfite.

Example processing efficiency: the primary time of the crushing is 60 minutes, and 3 kg of potassium peroxodisulfate.

TABLE 1 cost of use of different chemical assistants

Hypochlorous acid, sodium sulfite, and potassium peroxodisulfate were all purchased from cloud tiger chemical company, inc.

From the above table data: the cost is saved by 560 yuan/day every day, and the cost for treating the high-wet-strength broke chemicals is reduced by 70%.

In addition, the embodiment adopts secondary steam discharged from the paper machine as a heating source, solves the energy waste, ensures that the wet-strength resin reacts with potassium peroxodisulfate rapidly at high temperature, and achieves the effect of rapidly degrading the wet-strength resin to be adsorbed on the carboxyl of the fiber, so that the wet-strength resin is rapidly dissolved and separated.

Table 2 total amount of power consumed by the electric motor used per day for examples and comparative examples

From the above table data: the electricity consumption is 1440 kwh/day, and the electricity consumption and the loss of the high-wet-strength dry broke treatment are 60 percent.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims (9)

1. The recovery device of the high-wet-strength broke of the household paper is characterized by comprising a pulping tank (1), a chemical auxiliary adding pipeline (13) and a heating component for heating the slurry in the pulping tank (1);

the slurry crushing device is characterized in that a discharging assembly for discharging slurry is arranged on the wall of the slurry crushing tank (1), and a stirring assembly for stirring the slurry is arranged in the slurry crushing tank (1);

the heating assembly comprises a secondary steam pipeline (15) provided with a secondary steam valve (14).

2. The recycling device for high wet strength broke of household paper according to claim 1, wherein the stirring assembly comprises a stirrer cutter head (7) and a stirrer motor (8) which are connected;

the stirrer cutterhead (7) is positioned in the pulping groove (1), and the stirrer motor (8) is positioned outside the pulping groove (1).

3. The recycling device for high-wet-strength damaged paper of household paper according to claim 1, wherein the discharging assembly comprises a discharging pipeline (4) connected with the pulping tank (1), and a discharging valve (6) and a discharging pump (5) which are arranged on the discharging pipeline (4);

the discharging pump (5) is positioned at one side of the discharging valve (6) far away from the pulping groove (1).

4. A recycling apparatus for high wet strength broke of household paper according to claim 1, characterized in that said apparatus further comprises a white water adding assembly for adding white water to the pulping vat (1).

5. The recycling apparatus for high wet strength broke of household paper according to claim 4, wherein the white water adding assembly comprises a white water pipeline (10) connected with the pulping tank (1), and a white water pump motor (11) and a white water pipeline valve (12) which are arranged on the white water pipeline (10);

the white water pump motor (11) is positioned at one side of the white water pipeline valve (12) far away from the pulping groove (1).

6. The paper tissue high wet strength broke recycling apparatus of claim 1, further comprising a high wet strength broke transfer assembly for adding the high wet strength broke to the shredding vessel.

7. The recycling device for high-wet-strength broke of household paper according to claim 6, wherein the high-wet-strength broke conveying assembly comprises a chain plate machine (3) above the pulping tank (1).

8. The recovery device for high-wet-strength broke of household paper according to claim 1, wherein a thermometer (16) is arranged on the wall of the pulping tank (1).

9. The recovery device for high-wet-strength broke of household paper according to claim 1, wherein the tank wall of the pulping tank (1) is provided with a liquid level gauge (9).