SU1326636A1 - Method of biological retting of rlax straw - Google Patents

Abstract

The invention relates to the primary processing of bast fibers, in particular to biological methods for producing flax fiber. The invention provides for an increase in the quality of the fiber produced by the fact that during biological wetting of flax straw with a duct, the moistening fluid is subjected to aerobic and anaerobic regeneration to a pH of 7.5-8.5. In addition, during the course of aerobic regeneration, the moistena liquid is subjected to electrolysis by the action of a constant current in the cathode zone of the diaphragm electrolyzer, and the moistening fluid after electrolysis in the anode zone is returned to regeneration. 1 tab. (L

Description

The invention relates to the primary processing of bast fiber, namely to biological methods for producing fiber.

The purpose of the invention is to increase the quality of the fiber produced.

Example 1 (comparative). Flax nur straw set in piles in a wash tank. The lobe is performed at 5 ° C, at the flow rate of the moistening liquid 1. Regeneration of the moistening liquid to a pH of 8.0 is carried out first aerobically with the ejection of air into the moistening liquid, and

then anaerobic. I

PRI mme R 2. Processing flax

Straws are carried out as in Example 1 at a flow rate of 1, but additionally, the moistening fluid in the regeneration process is subjected to electrolysis by direct current in the cathode zone of the diaphragm electrolyzer during aerobic regeneration, and the moistening fluid after electrolysis in the anode zone is returned to the regenerator inlet.

Trephine number

fibers

The strength of combed, fiber tear, N

Flexibility, mm Metric number

Whiteness whiteness

58.3

Editor T. Parfenova

Compiled by V.Nikitkov Tehred L. Serdyukova

Order 3251/22

Circulation 427 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

five

0

five

EXAMPLE 3. Flax straw is treated as in Example 3, but with a pH of the moistening fluid after regeneration of 7.5.

C r i me R 4. The treatment of flax straw is carried out as in Example 2, but with a pH of the washing liquid after regeneration of 8.5.

Claims (1)

The table shows the results obtained when treating flax straw. Invention Formula A method of biological blunt straw with a duct, including aerobic and anaerobic regeneration of the moistening liquid to a pH of 7.5-8.5, characterized in that, in order to improve the quality of the fiber produced, the moistening liquid is additionally subjected to constant electrolysis during aerobic regeneration the current in the cathode zone of the diaphragm electrolyzer, and the cleaning fluid after electrolysis in the anode zone is returned to regeneration. 1-3,513,0 190,0180.0 63,060,0 360,0353.0 65,061,2 Proofreader L. Pilipenko