Salix psammophila bleached chemi-mechanical pulp technology

A technology for bleaching chemical machinery and Salix, applied in the field of papermaking technology, to achieve the effects of environmental friendliness, simple process and high performance

Active Publication Date: 2015-06-17
石河子市国力源环保制浆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no papermaking process utilizing caragana

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A Salix bleached chemical mechanical pulp process, the specific process steps are as follows:

[0022] 1) Cut the salix into a 35-50mm uniform material section, transport it to a double drum washing machine to remove impurities, and then after dehydration, screw it to the steam bin (30min). After being fully immersed, it is transported to the twin screw Thread rolling machine

[0023] 2) Add 3% sodium hydroxide, 0.1% PAM, 0.5% MgSO to the first stage of thread rolling machine 4 Send to the high concentration reaction chamber and let stand for 40 minutes;

[0024] 3) After the first stage of the reaction chamber, the slurry is washed and dewatered by a stage extruder, and then the second stage is rubbed and divided into silk, and 2% NaOH and 3% Na are added to the thread rolling machine. 2 SiO 3 , 0.5% EDTA, 5.5% H 2 O 2 . After thread rolling, it is transported to the high-concentration reaction chamber and allowed to stand for 40 minutes;

[0025] 4) After standing the slurr...

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PUM

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Abstract

The invention discloses a salix psammophila bleached chemi-mechanical pulp technology. According to the technology, (1) salix psammophila is cut into even material sections, the materials are conveyed to a dual-drum material washing machine for removing impurities, the materials are dehydrated and spirally conveyed to a steaming bin to be subjected to sufficient dipping, and then the materials are conveyed to a dual-screw thread rolling machine; (2) the materials are then conveyed to a high-consistency reaction bin for standing after thread rolling is carried out in the first section of thread rolling machine; (3) pulp materials passing through the first section of reaction bin is washed and dehydrated through a section of press master, a second section of rolling, grinding and filament separating is carried out, and the materials are conveyed to the high-consistency reaction bin for standing after thread rolling; (4) high consistency refining is carried out after the pulp materials after standing pass through two sections of press masters; (5) after high-speed latency eliminating is carried out on grinded coarse pulp through a hydrapulper, deslagging, fine grinding, screening and concentration are carried out, and then the materials are conveyed to a pulp distribution chest and then to a papermaking workshop. According to the salix psammophila bleached chemi-mechanical pulp technology, the characteristics of salix psammophila are utilized, the technology is simple and easy to operate, large complex equipment is not needed, the technology is more environmentally friendly compared with an existing technology, the performance is high, and the cost is low.

Description

technical field [0001] The invention relates to a chemical mechanical pulp bleaching process of Salix salix, belonging to the field of papermaking technology. Background technique [0002] Salix salix is ​​a desert plant, and it is also one of the very few plants that can grow in saline-alkali land. Its young branches are yellow, the leaves are linear or linear-lanceolate, the branches are clustered and not afraid of sand pressure, the root system is developed, and the germination is strong. It is a sand-fixing afforestation tree species. Its natural enemy is the salix moth. It is born in the wetlands of river valleys and streams. , Shanxi, Shaanxi, Gansu, Qinghai, Sichuan and other places. Salix salix is ​​used as the main force for wind and sand protection in the north, and is one of the first choices for the "Three North Shelterbelts". But there is no papermaking process utilizing caragana. Contents of the invention [0003] The technical problem to be solved by the ...

Claims

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Application Information

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IPC IPC(8): D21B1/16D21C1/06
CPCD21B1/16D21C1/06
Inventor 腾铁生张跃平
Owner 石河子市国力源环保制浆有限公司
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