Method for producing viscose fiber prepared by plant fiber

A viscose fiber and plant fiber technology, which is applied in the production field of viscose fiber from plant fiber, can solve the problems of inability to connect the viscose fiber production process, occupy a large area of ​​the workshop, inconvenient production management, etc. The effect of reducing production costs and improving production efficiency

Active Publication Date: 2011-07-20
YIBIN HIEST FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

200610021387.4 The process still belongs to the pulp production process. The denatured material needs to be washed, impurity removed, bleached, washed twice according to the pulp production requirements, and the pulp is made into a dissolving grade pulp. The process is complicated and cumbersome, and it cannot be directly mixed with viscose Fiber production process connection
The entire viscose fiber production process becomes huge, time-consuming, energy-consuming, has a lot of equipment, takes up a large area of ​​the factory building, and is inconvenient for production management

Method used

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  • Method for producing viscose fiber prepared by plant fiber
  • Method for producing viscose fiber prepared by plant fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Put the commercially available paper-making grade wood pulp with an average degree of polymerization of 1200 on the feeder, set a certain feeding rate (10kg / min), and add a lye with a concentration of 85g / l and a temperature of 85°C. The lye flow rate is 10m3 / h~20m3 / h, through the action of stirring, the pulp is broken and lye is thoroughly mixed to prepare a solid and liquid mixture with a concentration of 3.0%. The process is called porridge.

[0051] The porridge is transported to the reaction kettle by a transfer pump at a speed of 15m3 porridge / hour. At the same time, a circulating pump is used to circulate the reaction kettle. The circulation speed is 100m3 / h. The steam is added from the main circulation pipe and is automatically adjusted. The valve is used to control the amount of steam added to ensure that the reaction temperature is controlled at 85±2°C. Compressed air is added from the detonator position around the top of the reactor, so that the gaseous, liquid a...

Embodiment 2

[0054] Put the commercially available paper-making grade cotton pulp with an average degree of polymerization of 1000 on the feeder, set a certain feeding rate (10kg / min), and add a lye with a concentration of 80g / l and a temperature of 80℃. The flow rate of the lye is 10m3 / h~20m3 / h, through the action of stirring, the pulp is broken and lye is fully mixed to prepare a solid and liquid mixture with a concentration of 3.5%, which is called porridge in the process.

[0055] The porridge is transported to the reaction kettle by a transfer pump at a speed of 14m3 porridge / hour. At the same time, a circulating pump is used to circulate the reaction kettle. The circulation speed is 100m3 / h. The steam is added from the main circulation pipe and is automatically adjusted. The valve is used to control the amount of steam added to ensure that the reaction temperature is controlled at 85±2°C. Compressed air is added from the detonator position around the top of the reactor, so that the gaseo...

Embodiment 3

[0058] Put the commercial paper-making grade cotton-wood mixed pulp with an average degree of polymerization of 1000 on the feeder, the mixing ratio is 1-99, set a certain feeding speed (10kg / min), add concentration 80g / 1, temperature 80 ℃ lye, the lye flow rate is 8m3 / h~18m3 / h, through the action of stirring, the pulp is broken and the lye is fully mixed to prepare a solid and liquid mixture with a concentration of 3.5%. It is called porridge.

[0059] The porridge is transported to the reaction kettle by a transfer pump at a speed of 14m3 porridge / hour. At the same time, a circulating pump is used to circulate the reaction kettle. The circulation speed is 100m3 / h. The steam is added from the main circulation pipe and is automatically adjusted. The valve is used to control the amount of steam added to ensure that the reaction temperature is controlled at 80±2°C. Compressed air is added from the detonator position around the top of the reactor, so that the gaseous, liquid and sol...

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Abstract

The invention discloses a method for producing a viscose fiber prepared by plant fiber, which comprises the following steps: impregnating alkali to obtain pulp gruel; degrading and polymerizing the pulp gruel in a high-temperature aerobic container; squeezing the pulp gruel after degradation and polymerization to obtain an alkali fiber; and generating a viscose fiber by the alkali fiber. The method for producing the viscose fiber directly by a plant fiber raw material, such as a papermaking grade pulp board through a wet method constraint degradation technology greatly reduces the production cost and the pollution and can fully master the purchasing initiative of pulp raw materials, greatly relieve the purchasing pressure of the pulp raw materials and overcome the defects caused by two-section type viscose fiber production in the viscose fiber production by a pulp denaturizing production technology.

Description

Technical field [0001] The present invention relates to a method for manufacturing cellulose fibers by wet forced degradation in chemical fiber manufacturing, in particular to a method for directly manufacturing viscose filaments / short filaments by using plant fibers (such as paper-making grade pulp board). Background technique [0002] The main forms of plant fiber raw materials are pulp sheet, block, powder, and granular. Among them, paper-making pulp board (plant fiber pulp board with high degree of polymerization) has a very large output in the world. my country imports paper-making pulp board every year. Above 8 million tons, self-produced paper-making grade pulp board is above 3 million tons, so paper-making grade pulp board resources are quite abundant, and the price of the pulp board is very low (compared to viscose filament / short filament pulp) . If these plant fiber raw materials can be used in viscose filament / short yarn production, not only can the production cost be g...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): D01D1/02D01F2/06
Inventor冯涛邓传东贺敏李蓉玲饶芳秋唐孝兵严青平田启兵
OwnerYIBIN HIEST FIBER