Paper pulp bleaching equipment use method

A pulp and equipment technology, applied in the field of pulp bleaching equipment, can solve the problems of reducing the bleaching effect of pulp, failing to reach the optimal concentration of bleaching agent, and low work efficiency, and achieve the effect of improving the bleaching effect

Active Publication Date: 2016-03-09
重庆市南川区金鑫纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the bleaching process of softwood pulp and hardwood pulp, the uncolored pulp is treated with bleaching agent to remove colored substances and other impurities in the pulp to improve whiteness and purity. This process usually requires special bleaching equipment for pulp Bleaching, in the traditional pulp bleaching tower, the pulp to be bleached is generally put into the upper part of the tower body, and the bleaching agent is put into the mixed reaction to perform bleaching, and then bleached pulp is obtained. The bleached pulp is discharged from the lower part of the tower body, but reaches the bottom of the tower...

Method used

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  • Paper pulp bleaching equipment use method
  • Paper pulp bleaching equipment use method
  • Paper pulp bleaching equipment use method

Examples

Experimental program
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Embodiment 1

[0021] Embodiment 1 is basically as attached figure 1 Shown: a bleaching equipment for pulp, including a bleaching tower 10, the upper part of the bleaching tower 10 is provided with a discharge port 11, and the bottom of the bleaching tower 10 is provided with a feed port and a feed channel 20 communicating with the feed port. The embodiment also includes a storage hopper 40, a bleach box 50, and a feeding mechanism 30. The storage hopper 40 is located below the bleaching tower 10, and the feed passage 20 communicates with the upper end of the storage hopper 40. A feeding port 41 is provided on the storage hopper 40, and the storage hopper The lower part of 40 is funnel-shaped. The spiral blade 33 can send out the pulp in the lower part of the storage hopper 40 to avoid the accumulation of pulp in the lower part of the storage hopper 40 . The feeding mechanism 30 includes a rotating shaft 32 with a hollow cavity, a helical blade 33 and a power source 31 for driving the rotat...

Embodiment 2

[0028] The difference from Embodiment 1 is that: the helical blade 33 is provided with a distributing chamber communicating with the hollow cavity, and the helical blade 33 is provided with a distributing hole communicating with the distributing chamber. In this scheme, also offer dispensing cavity and distribution hole on the helical blade 33, the bleaching agent not only sprays through the spray hole 321 on the rotating shaft 32, but also can be sprayed from the surface of the helical blade 33, because the helical blade 33 is always in the In the state of pushing the pulp, the contact surface between the helical blade 33 and the pulp is large, so the bleaching agent can be dispersed in the pulp to a greater extent.

[0029] The specific method of use of the present embodiment is different from the method of embodiment 1 as follows:

[0030] Step 3: (3) Simultaneously with step 2, the bleach in the bleach tank 50 is pumped into the hollow cavity of the rotating shaft 32 and t...

Embodiment 3

[0032] Such as figure 2 As shown, the difference from Embodiment 1 is that: it also includes a blower device 60, the blower device 60 in this embodiment is a blower, and the air outlet of the blower communicates with the hollow cavity through an air pipe. When blowing air into the hollow cavity, the bleach in the hollow cavity can be sprayed out from the spray hole 321 in a spray state, which can make the bleach more dispersed.

[0033] The specific method of use of the present embodiment is different from the method of embodiment 1 as follows:

[0034] At the same time of step 2, the blower is also started to blow air into the hollow cavity of the rotating shaft 32;

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Abstract

The present invention discloses a paper pulp bleaching equipment use method which comprises the following steps: (1) paper pulp to be bleached is added into a material storage hopper; (2) a power source of a feeding mechanism in the material storage hopper is started and the paper pulp in the material storage hopper is sent into a bleaching tower through a lower portion of the bleaching tower via a feed sending channel by screw blades; (3) while the step 2 is conducted, a bleaching agent in a bleaching tank is pumped into a hollow chamber body of a rotary shaft and is ejected out from a spray hole; and (4) a bleaching pulp treated by bleaching can thereby be obtained at a discharge port of the upper part of the bleaching tower. The scheme can avoid bridge of the paper pulp in the bleaching tower.

Description

technical field [0001] The invention belongs to the post-treatment field of cellulose pulp, such as wood pulp, or cotton linters, and in particular relates to a method for using pulp bleaching equipment. Background technique [0002] In the bleaching process of softwood pulp and hardwood pulp, the uncolored pulp is treated with bleaching agent to remove colored substances and other impurities in the pulp to improve whiteness and purity. This process usually requires special bleaching equipment for pulp Bleaching, in the traditional pulp bleaching tower, the pulp to be bleached is generally put into the upper part of the tower body, and the bleaching agent is put into the mixed reaction to perform bleaching, and then bleached pulp is obtained. The bleached pulp is discharged from the lower part of the tower body, but reaches the bottom of the tower body The pulp is also prone to bridging, which is not conducive to the discharge of the pulp into the next process. Therefore, th...

Claims

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Application Information

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IPC IPC(8): D21C9/10
CPCD21C9/10
Inventor 马斌
Owner 重庆市南川区金鑫纸业有限公司
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