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Dry glue making method and device for lyocell fiber production

A dry method and fiber technology, applied in the dry method and device field of lyocell fiber production, can solve the problem of increasing solvent recovery investment costs and operating costs, affecting the quality of subsequent rubber production, product stability, and pulp dryness Problems such as large fluctuations, to achieve the effect of low manufacturing cost, reduced possibility, and small fluctuations

Active Publication Date: 2021-04-27
山东鸿泰鼎新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are obvious deficiencies in this wet rubber-making process. First, the pulp dryness after pressing fluctuates too much and the stability is poor. Therefore, the NMMO concentration of the cellulose suspension obtained after mixing with the NMMO solution fluctuates, which affects the subsequent glue-making process. The quality and stability of finished products; the second is to bring excess water into the production system, which increases the volume of subsequent solvent recovery and increases the investment cost and operating cost of solvent recovery

Method used

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  • Dry glue making method and device for lyocell fiber production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: as figure 1 As shown, a dry-process rubber-making method for lyocell fiber production improves the quality of rubber-making and the stability of lyocell finished products, reduces NMMO recovery costs and investment costs, and includes the following steps:

[0026] Step 1), the pretreatment step of dissolving pulp:

[0027] Including plate-type dissolving pulp treatment steps and roll-type dissolving pulp treatment steps,

[0028] Plate-type dissolving pulp processing steps: Use a splitter for sheet separation and conveyance, and the conveying capacity of a single machine is 2 to 5t / h;

[0029] Roll-type dissolving pulp processing steps: use tractor for continuous paper feeding, the conveying capacity of a single machine is 2-5t / h, and the moisture content of raw material dissolving pulp is required to be within the national standard range of 8-12%.

[0030] Step 2), strong shredding steps:

[0031] The raw material dissolving pulp conveyed by the slitti...

Embodiment 2

[0048] Embodiment 2: as figure 1 As shown, a dry-process rubber-making device for lyocell fiber production, the slitting machine and the tractor are respectively connected to the strong shredder, the strong shredder is connected to the first conveying fan, the first conveying fan is connected to the cyclone separator, and the cyclone separator Connect the universal pulverizer, the universal pulverizer is connected to the second conveying fan, the second conveying fan is connected to the screening machine, the screening machine is respectively connected to the second cyclone separator and the universal pulverizer, and the second cyclone separator is respectively connected to the anchovy filter and weighing The silo, the weighing silo is connected to the unloader, the unloader is connected to the weighing belt device, the weighing belt device is connected to the pre-mixer, the pre-mixer is connected to the buffer silo, the buffer silo is connected to the thin-film evaporator, and...

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Abstract

The invention belongs to the technical field of fiber manufacturing, dry repulping and glue making processes, and relates to a dry glue making method and device for lyocell fiber production. A separation machine and a traction machine are connected with a strong shredding machine; the strong shredding machine is connected with a first conveying fan; the first conveying fan is connected with a cyclone separation machine; the cyclone separation machine is connected with a universal pulverizer; the universal pulverizer is connected with a second conveying fan; the second conveying fan is connected with a screening machine; the screening machine is connected with a second cyclone separator and the universal pulverizer; the second cyclone separator is connected with a phoenix tail filter and a weighing bin; the weighing bin is connected with an unloading machine; the unloading machine is connected with a weighing belt device; the weighing belt device is connected with a pre-mixing machine; the pre-mixing machine is connected with a buffer storage bin; the buffer storage bin is connected with a film evaporator; the phoenix tail filter is connected with an exhaust fan and a feeding conveying fan; the exhaust fan is connected with a tail air emptying pipeline; the feeding conveying fan is connected with a first cyclone separator; and the first cyclone separator is connected with the weighing bin.

Description

technical field [0001] The invention belongs to the technical field of fiber manufacturing, dry pulping and glue making process, and relates to a dry glue making method and device for lyocell fiber production. Background technique [0002] Cellulose is the main component of plant cell walls and can be derived from trees, cotton, hemp and other plants. It is widely distributed in nature and is inexhaustible. Generally speaking, most organic substances containing hydroxyl groups are easily soluble in water, such as alcohol, glucose, etc., but cellulose is insoluble in water and most organic solvents. This is because the molecular weight of cellulose is generally large, ranging from several hundred to tens of thousands, and it is easy to form intramolecular and intermolecular hydrogen bonds. This force will cover a part of the affinity of hydroxyl groups for water, making cellulose insoluble. Soluble in water or insoluble in common organic solvents. [0003] Due to the deplet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/00D01D1/02D01F2/00
CPCD01D1/00D01D1/02D01F2/00
Inventor 王培荣
Owner 山东鸿泰鼎新材料科技有限公司
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