Material preparation method for cotton pulp production
A slurry and cotton pulp technology, applied in the field of cotton pulp production, can solve the problems that affect the degree of polymerization, whiteness and degree of the product, increase the difficulty of sewage treatment, increase the difficulty of cooking and alkali content, etc., and achieve COD value and color The temperature is reduced, the cooking difficulty is reduced, and the impurity removal effect is good.
Inactive Publication Date: 2020-07-10
ANHUI SNOW DRAGON FIBER TECH
View PDF8 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] At present, the material preparation method in the prior art mainly adopts dry impurity removal; however, the impurity removal effect of this material preparation method is relatively poor. The difficulty of sewage treatment; on the other hand, more impurities increase the difficulty of cooking and the amount of alkali in the cooking process, thereby increasing the damage of fibers and affecting the degree of polymerization, whiteness and Angstrom of the final product
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0062] (1) After the cotton linters are unpacked, they are opened by the cotton opener, and then enter the dry impurity removal system for dry impurity removal, and then the wind is sent to the cyclone separator, and water is sprayed and pre-soaked before entering the pressing screw. The screw conveyor is transported to the cyclone semi-pulper, mixed with water until the slurry concentration is 5% ± 1%, and then cut and beaten to obtain a slurry mixture, which is placed in the storage tank.
[0063] (2) The slurry mixture obtained in step (1) is pumped from the storage tank to the diluted slurry mixing tank for concentration adjustment, and the slurry concentration is adjusted to be 0.6% ± 0.1%, and then it is carried out through the second-stage four-stage desander. Purification treatment, specifically: the slurry with a concentration of 0.6%±0.1% first enters the first-stage desander to obtain the first-grade good pulp and the first-grade tailings respectively; wherein, the f...
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
| Property | Measurement | Unit |
|---|---|---|
| Ash content | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a material preparation method for cotton pulp production, which comprises the following steps: (a) beating and cutting off cotton linters to obtain a pulp mixture; (b) performing concentration adjustment on the slurry mixture obtained in the step (a), and performing purification treatment through a second-stage four-section desander to respectively obtain secondary acceptedslurry and accepted linters; and (c) dehydrating and concentrating the secondary accepted pulp obtained in the step (b) to obtain pulp to be cooked. Compared with the prior art, the material preparation method provided by the invention has the advantages that the two-stage four-section desander is used for wet material preparation, the impurity removal effect is good, on one hand, the COD (Chemical Oxygen Demand) value and chromaticity of wastewater generated in the subsequent cooking process are reduced, the pollution load is small, and the sewage treatment difficulty is reduced, and on the other hand, the cooking difficulty and the alkali amount in the cooking process are reduced due to fewer impurities, so that the damage to fibers is reduced, the polymerization degree and whiteness ofa final product are improved, and the angstrom degree is reduced.
Description
technical field [0001] The invention relates to the technical field of cotton pulp production, in particular to a material preparation method for cotton pulp production. Background technique [0002] With the development of society and technological progress of enterprises, people have higher and higher requirements for the quality of cotton pulp, especially for the purity and performance of special cotton pulp. However, due to changes in the supply of raw materials (mainly cotton linters), especially the widespread promotion of machine-picked cotton, the impurity content of cotton linters has increased, which has brought many adverse effects on product quality, process optimization, and pollution control. influences. Therefore, processing cotton linters through a specific material preparation method has become an important link in the production of cotton pulp. [0003] At present, the material preparation method in the prior art mainly adopts dry impurity removal; howeve...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00D21B1/34D21D5/18
CPCD21C5/00D21B1/34D21D5/18
Inventor 袁国成吴保杰陶春昊
Owner ANHUI SNOW DRAGON FIBER TECH