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Paper deacidification system with rotation bracket and deacidification method

A deacidification and paper technology, which is applied in the post-processing of waste paper, post-processing of printing, printing and other directions, can solve the problems of affecting the appearance and structural stability of paper cultural relics, secondary destruction of ancient books and documents, and difficulty in batch processing. Achieve the effect of improving batch processing efficiency, accelerating diffusion, and convenient use and cleaning

Active Publication Date: 2018-02-23
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some paper cultural relics are very fragile. If soaked in the deacidification solution for a long time, the appearance and structural stability of the paper relics will be seriously affected; Here, the above-mentioned patented technology has also adopted a swinging method to promote the diffusion of the deacidification agent, but the diffusion of the deacidification agent in the stacked book pages also needs to be improved.
Chinese patent 201310111061.0 uses ultrasound to strengthen the diffusion of deacidification agent, but ultrasound may cause serious secondary damage to the already fragile ancient documents
[0004] It is of great significance to seek a deacidification equipment and method to solve the problems of uneven deacidification, uneven alkali retention, difficulty in batch processing and environmental pollution in the prior art.

Method used

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  • Paper deacidification system with rotation bracket and deacidification method
  • Paper deacidification system with rotation bracket and deacidification method
  • Paper deacidification system with rotation bracket and deacidification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A paper deacidification system with a rotating carriage such as figure 1 As shown, it includes a deacidification reactor 1, a drive system 2, a deacidification liquid injection and return system 3, a vacuum system 4, a deacidification liquid recovery device 5 and an intelligent operation console 6.

[0039]The outlet of the deacidification liquid storage tank 31 is connected with the deacidification liquid inlet of the deacidification tank 11 through the centrifugal pump 32 and the inlet valve 33, and the deacidification liquid outlet of the deacidification tank 11 is connected with the deacidification liquid storage tank through the outlet valve 34 and the centrifugal pump 32. The outlet of the tank 31 is connected, the outlet of the deacidification barrel 11 is connected with the inlet of the condenser 52 through the first vacuum ball valve 42, the vacuum pump 41 and the second vacuum ball valve 51, and the outlet of the condenser 52 is connected with the inlet of the ...

Embodiment 2

[0055] Get a number of books during the period of the Republic of China with a pH value of about 4.5, and adopt the method for paper deacidification in Example 1,

[0056] In the step (1), the deacidification solution is Mg(OH) with a pH value of 12.8 2 perfluorohexane suspension, and a small amount of paper-strengthening agent-modified starch in the deacidification solution.

[0057] Pre-evacuate to 10Pa in step (1).

[0058] In step (2), the rotational speed of the motor is controlled at 30 rpm by the transmission, the forward and reverse directions rotate alternately, the exchange frequency is 1 min, and the deacidification reaction time is 40 min.

[0059] In step (4), the heating temperature is 60° C., and the drying is performed for 120 minutes.

[0060] Take 2g of acidified paper and paper after deacidification treatment and soak them in a beaker filled with 100mL distilled water (pH=6.3), shake once in the middle, take out the paper after 1 hour, and measure the pH v...

Embodiment 3

[0064] Get a number of books during the period of the Republic of China with a pH value of about 5.7, and adopt the method for paper deacidification in Example 1,

[0065] In the step (1), the deacidification solution is Mg with a pH value of 12.1 4 Al-LDHs (structural formula is [Mg 8 Al 2 (OH) 20 ](CO 3 )·4H 2 O) trichlorotrifluoroethane suspension, containing a small amount of paper reinforcing agent modified cellulose in the deacidification solution simultaneously.

[0066] Pre-evacuate to 60Pa in step (1).

[0067] In step (2), the rotational speed of the motor is controlled at 45 rpm by the transmission, and the forward and reverse directions rotate alternately, the exchange frequency is 3 minutes, and the deacidification reaction time is 30 minutes.

[0068] In step (4), vacuumize and dry at room temperature.

[0069] Take 2g of acidified paper and paper after deacidification treatment and soak them in a beaker filled with 100mL distilled water (pH=6.3), shake on...

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Abstract

The invention discloses a paper deacidification system with a rotation bracket and a deacidification method, and relates to the technical field of the paper deacidification. In the system, the outletof a deacidification liquid storage tank is connected with the deacidification liquid inlet of a deacidification barrel through a centrifugal pump and an inlet valve. The deacidification liquid outletof the deacidification barrel is connected with the outlet of the deacidification liquid storage tank through an outlet valve and the centrifugal pump. The outlet of the deacidification barrel is connected with the inlet of a condenser through a first vacuum ball valve, a vacuum pump and a second vacuum ball valve. The outlet of the condenser is connected with the inlet of the deacidification liquid storage tank. The interior of the deacidification barrel comprises the rotation bracket. The exterior of the deacidification barrel is provided with a heating system. The deacidification method comprises the following steps: placing paper to be deacidified in the deacidification barrel, pre-vacuumizing and feeding the deacidification liquid, returning the deacidification liquid after the deacidification to the deacidification liquid storage tank, and drying the deacidified paper. The system has the characteristics of high integration and automation degree, low cost, convenient use and cleaning, high deacidification efficiency, easy batch processing, uniform deacidification, uniform alkali reservation amount, recycling use of the deacidification liquid, and no environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of paper deacidification, and in particular relates to a paper deacidification system and a deacidification method with a rotating bracket. Background technique [0002] Paper (or books) has always played the role of recording history, transmitting information, and assisting learning, and it is also an important carrier of cultural inheritance. However, with the passage of time, under the joint action of internal and external factors, paper materials (or cultural relics) have been severely acidified, resulting in a sharp reduction in the possible preservation period. There are a large number of paper-based ancient books or documents in all countries in the world. In my country alone, there are as many as 30 million ancient books and documents collected in libraries. A considerable proportion of paper-based ancient books or modern materials have been severely acidified although the apparent damage is not obvi...

Claims

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Application Information

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IPC IPC(8): D21H25/18B41M7/00
CPCD21H25/18B41M7/0063Y02W30/64
Inventor 巩前明黄逸伦刘定松
Owner TSINGHUA UNIV
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