Device and method for producing cardboard paper by utilizing paper mill sludge and waste paper

A papermaking sludge and production box technology, which is applied in textiles and papermaking, recycling technology, paper, etc., can solve the problems of large land occupation, waste of resources, and secondary pollution of the environment, so as to reduce secondary pollution and save papermaking raw materials , the effect of reducing production costs

Inactive Publication Date: 2013-05-08
SOUTH CHINA UNIV OF TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

But all there is very big defect in these two kinds of treatment methods: 1, because also contain a lot of fibers that are used for papermaking in the papermaking sludge, so use above-mentioned two kinds of treatment methods will cause great resource waste; 2, cause environmental impact Secondary pollution; if the papermaking sludge is landfilled, it will not only occupy a large amount of land, but also pollute the air due to the odor generated by the fermentation of the papermaking sludge after the landfill; and when the papermaking sludge is incinerated, only It can burn the organic components such as fine fibers and hemicellulose in the papermaking sludge, but the inorganic components in the papermaking sludge cannot be burned, resulting in a large amount of waste residue, so it needs to be landfilled again, which will cause environmental damage Secondary pollution also increases the treatment cost of papermaking sludge

Method used

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  • Device and method for producing cardboard paper by utilizing paper mill sludge and waste paper
  • Device and method for producing cardboard paper by utilizing paper mill sludge and waste paper
  • Device and method for producing cardboard paper by utilizing paper mill sludge and waste paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like Figure 1 to Figure 3 A device for producing containerboard using papermaking sludge and waste paper is shown, which is characterized in that it includes a waste paper pulping system, a sterilization and deodorization system, and a storage tank 1 connected in sequence, a heavy slag remover 2, a light Quality slag remover 3, vibrating frame flat screen 4, stirring tank 5, sterilizing and deodorizing tank 6 and pulp stabilization box 10; the sterilizing and deodorizing tank 6 is connected with the sterilizing and deodorizing system;

[0029] It also includes the first pulping tank, the first pulping system, the second pulping tank, the second pulping system, the third pulping tank, the third pulping system and the paper machine, and the waste paper pulping system passes through the first pulping tank The tank is connected to the first sizing system, and the first sizing system and the stock stabilization box 10 are connected to the paper machine at the same time; the...

Embodiment 2

[0047] The device and method for producing containerboard by utilizing papermaking sludge and waste paper are the same as in Example 1 except for the following features: when the pulp is mixed with short fiber pulp in the step D, the amount of pulp added is 3% of the total mass %.

[0048] The physical properties of the boxboard produced according to this embodiment are: quantitatively 180g / m 2 ;Burst resistance index is 2.1Kpa m 2 / g; the ring pressure index is 6.1N·m / g; the folding endurance is 65 times.

Embodiment 3

[0050] The device and method for producing containerboard paper utilizing papermaking sludge and waste paper are the same as in Example 1 except for the following features: when the pulp is mixed with the short fiber slurry in the step D, the amount of pulp added is 10% of the total mass %.

[0051] The physical properties of the boxboard produced according to this embodiment are: quantitatively 180g / m 2 ;Burst resistance index is 1.8Kpa m 2 / g; the ring pressure index is 5.5N·m / g; the folding endurance is 57 times.

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Abstract

The invention discloses a device and a method for producing cardboard paper by utilizing paper mill sludge and waste paper. According to the invention, impurity removal, sterilization, deodorization and the like are carried out on the paper mill sludge so that the paper mill sludge becomes paper pulp capable of being used for paper making, and then the paper pulp is combined with sizing agent prepared from the waste paper to produce the cardboard paper. According to the device and the method, the utilization value of the paper mill sludge is improved, and secondary pollution of paper making sludge to the environment is avoided; and simultaneously, the problem of timber resource shortage is solved, and the production cost of producing the cardboard paper is further reduced.

Description

technical field [0001] The invention relates to a production device and method of boxboard, in particular to a device and method for producing boxboard by utilizing papermaking sludge and waste paper. Background technique [0002] At present, the production of container board paper is mainly carried out by extracting papermaking fibers from wood as raw materials. This production method consumes a large amount of wood resources, and the current wood resources are very scarce, so the cost of producing container board paper using wood fibers as raw materials is very high. high. [0003] With the development of the paper industry and the construction of pollution prevention and control facilities, the papermaking sludge generated after the papermaking wastewater is treated by the treatment facilities has become a new source of pollution. At present, there are two main treatment methods for papermaking sludge. One is to use a filter press to dehydrate it and transport it to land...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/10D21H21/36D21B1/32
CPCY02W30/64
Inventor 雷利荣李友明
Owner SOUTH CHINA UNIV OF TECH
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