SU823476A1 - Method of finishing viscous textile thread - Google Patents

Description

(Sl) METHOD FOR FINISHING VISCOSE TEXTILE

THREADS

one

The invention relates to the production of a viscose textile yarn, in particular by a centrifugal method, and can be used in finishing shops for the production of chemical fiber.

When forming viscose textile yarn by centrifugal method, the thread is obtained in the form of Easter cakes. In the finishing shop, the cakes are collected in bags and sent for processing, which consists in the finishing and rinsing. Finishing is carried out with solutions of various reagents that interact with chemicals contained in the fiber after molding, and washing is carried out step by step with water of various degrees of purity.

There is a method of finishing viscose textile yarn, consisting in the sequential processing of cakes with solutions of various reagents with alternate washing with water - usually three stages of finishing and three washing 1..

The washing operation is performed by pumping water once through the cakes simultaneously (concurrently), usually in several barges.

at each stage, then water is collected from all the barks of this stage into a general tank, from where it is sent to the next (previous along the cake) washing stage, feeding from the general tank directly into the barks of this stage, etc. After the first rinse cake, the water is removed from the cycle as the most saturated

0 laundered substances. Thus, the total supply of softened water to the system (flow rate} is equal to the volume of water pumped through the cakes at the last (final) washing stage.

5 For effective washing with the existing technology, it is necessary at each stage to pump water at a rate of 1 l / min per cake, which amounts to up to 200 m of water.

0 on 1 ton of thread. Reducing the consumption of um-rich water, and consequently, a corresponding decrease in the volume of water pumped through the cakes, leads to unsatisfactory washing.

five

The aim of the invention is to reduce the consumption of softened water while maintaining the high quality of viscose yarn washing in Easter cakes.

The goal is achieved

0 so that according to the method of finishing

viscose textile yarn, which includes the sequential processing of Easter cakes immersed in the bark with finishing solutions with alternating pro-. washing with water, washing is carried out by repeatedly pumping water through barks using water from a separate vat for each barque and returning water to the same vat.

The repeated pumping of water through the cakes in each barge provides an increased flow of water through each cake, as a result of which the washing process occurs at all stages.

30 (10 in 3 barks)

Claims (1)

Proposed 10 As can be seen from the above data, the proposed rinsing method allows to drastically reduce the consumption of softened water while maintaining the required pumps for rinsing. The invention of the method of finishing viscose textile yarns, including the sequential processing of immersed in bark Easter cakes with finishing solutions with a shallower intensity, and feeding each bark from a separate vat with returning water to the same vat creates a greater number of washing stages (stages) equal to the number of bark-chan pairs and also creates a buffer supply of water in each zone, providing increased water flow for repeated pumping through the cakes with a reduced total feed (recharge of softened water into the system. Examples of the method of washing according to the proposed and known methods are given in the table. 36 64 98 200 1 dukltseys rinsing with water, so on, so that in order to reduce the consumption of dried water, the rinsing is carried out by repeatedly pumping water through cakes using water from a separate tank for each barge and returning water to this same vat. Sources of information taken into account during the examination 1. Rogovin-3.A. Fundamentals of Chemistry and Technology of Chemical Fibers, M ,, Himi,. 1974, p. 376 (prototype)