Plant fiber degrading and polymerizing technology

A plant fiber and process technology, which is applied in the field of forced reduction of the degree of polymerization of plant fibers by wet method, can solve the problems of inability to connect the viscose fiber production process, occupy a large workshop area, inconvenient production management, etc., and achieve rich choices and production costs. The effect of reducing and improving production efficiency

Active Publication Date: 2011-08-10
YIBIN HIEST FIBER
View PDF1 Cites 0 Cited by
  • 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 pulp needs to be washed, impurity removed, bleached, and washed twice according to the pulp production requirements. Rubber 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Plant fiber degrading and polymerizing technology
  • Plant fiber degrading and polymerizing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Put the commercially available papermaking grade wood pulp pulp with an average degree of polymerization of 1200 on the meal feeder, set a certain feeding speed (10kg / min), add the lye with a concentration of 85g / l and a temperature of 85°C, and the lye flow rate is 10m3 / h~20m3 / h, through the action of stirring, the pulp is crushed and fully mixed with lye to prepare a mixture of solid and liquid with a concentration of 3.0%, which is technically called pulp porridge.

[0043] The porridge is transported to the reaction kettle through the delivery pump, and the delivery speed is 15m3 porridge / hour. At the same time, the circulation pump is used to circulate the external circulation in the reaction kettle. The circulation speed is 100m3 / h. The valve is used to control the amount of steam added, so as to ensure that the reaction temperature is controlled at 85±2°C. Compressed air is added from the position of the detonator around the top of the reactor, so that the gaseous...

Embodiment 2

[0046] Put the commercially available paper-making grade cotton pulp with an average degree of polymerization of 1000 on the meal feeder, set a certain feeding speed (10kg / min), add the lye with a concentration of 80g / l and a temperature of 80°C, and the lye flow rate is 10m3 / h~20m3 / h, through the action of stirring, the pulp is crushed and fully mixed with lye to prepare a mixture of solid and liquid with a concentration of 3.5%, which is called pulp porridge in technology.

[0047] The porridge is transported to the reaction kettle through the delivery pump, and the delivery speed is 14m3 porridge / hour. At the same time, the circulating pump is used to circulate the external circulation in the reaction kettle. The circulation speed is 100m3 / h. The valve is used to control the amount of steam added, so as to ensure that the reaction temperature is controlled at 85±2°C. Compressed air is added from the position of the detonator around the top of the reactor, so that the gaseous...

Embodiment 3

[0050] Put the commercially available paper-grade cottonwood mixed pulp with an average degree of polymerization of 1000 on the pulp feeder, the mixing ratio is 1-99, set a certain feeding speed (10kg / min), and add the pulp at a concentration of 80g / l and a temperature of 80 The lye at ℃, the lye flow rate is 8m3 / h~18m3 / h, through the action of stirring, the pulp is crushed and fully mixed with the lye, and prepared into a mixture of solid and liquid with a concentration of 3.5%. called porridge.

[0051] The porridge is transported to the reaction kettle through the delivery pump, and the delivery speed is 14m3 porridge / hour. At the same time, the circulating pump is used to circulate the external circulation in the reaction kettle. The circulation speed is 100m3 / h. The valve is used to control the amount of steam added, so as to ensure that the reaction temperature is controlled at 80±2°C. Compressed air is added from the position of the detonator around the top of the react...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a plant fiber degrading and polymerizing technology suitable for viscose fiber production. The plant fiber degrading and polymerizing technology has the technical scheme that pulp gruel is obtained after a plant fiber raw material is impregnated by alkali; the pulp gruel is filled into a reaction vessel, and steam and pressure air are filled to uniformly mix air-solid-liquid materials; and the pulp gruel carries out degrading and polymerizing reaction under the action of high-temperature oxidation. The degraded and polymerized dissolving grade alkali fiber can be directly used for viscose fiber production; the method 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.

Description

technical field [0001] The invention relates to a process for forcibly reducing the degree of polymerization of plant fibers by wet method in the chemical fiber manufacturing industry, and is especially suitable for directly producing viscose filaments / short filaments by using plant fibers (such as paper-making grade pulp boards). Background technique [0002] The main forms of plant fiber raw materials are pulp, block, powder, and granular. Among them, paper-making grade pulp board (plant fiber pulp board with high polymerization degree) has a very large output in the world. my country imports paper-making grade pulp board every year. More than 8 million tons, self-produced paper-making grade pulp board is more than 3 million tons, so the resources of paper-making grade pulp board 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 the production of viscose fila...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): C08B15/00D01F2/06
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