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Method of on line detecting acid bath components and its detecting apparatus

A technology of acid bath and composition, applied in instruments, chemical analysis by titration, non-electric variable control, etc., can solve the problems of poor measurement repeatability, lagging of measurement results, and no real-time performance, so as to improve economic benefits and supplement in real time Acid liquid, the effect of high measurement accuracy

Inactive Publication Date: 2003-04-30
米文达
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Problems solved by technology

This detection method is too much affected by human factors, the measurement repeatability is poor, the measurement results are seriously lagging, and there is no real-time performance at all; and the quality of the acid bath is not high, and the concentration of the acid bath fluctuates greatly, so it cannot be detected and analyzed in time during the production process. The change of the acid bath cannot solve the problem of a large drop in the acid bath

Method used

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  • Method of on line detecting acid bath components and its detecting apparatus
  • Method of on line detecting acid bath components and its detecting apparatus
  • Method of on line detecting acid bath components and its detecting apparatus

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0020] see figure 1 , there is a neutralization cuvette 18, the bottom of which is connected with a liquid discharge pipeline and a solenoid valve 19; a pH probe 13 and a Pt1000 temperature compensation probe 14 are placed in corresponding positions in the cuvette 18, and the stirrer 10 is set as a conventional stirrer The purpose of; EDTA standard solution storage tank 1 addition line (passing into reaction cup 18) has peristaltic metering pump 9; The addition line of the acid bath standard solution storage tank 3 of known concentration and the acid bath sample liquid addition pipe to be measured Road 5 is connected by solenoid valve 4, and there is solenoid valve 12 on the acid solution adding pipeline and enters an inlet of 4 inlets and 1 outlet solenoid valve 17; 1mol NaOH standard solution storage tank 6, 0.1mol NaOH standard solution storage ta...

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Abstract

The electric controller and the neutral titration devices and used to simulate the manual method of the volumetric chemical analysis. The technique used in the invention includes the technique for adding liquid drop in micrometer level, the cleaning technique against mixing multiple flow paths and the technique of PH value and the variable speed control of flow rate addition. The measuring deviceincludes the electric control set, the creepage-metering pump, the stirrer, the pH probe and the temperature compensation probe as well as various control valves and pipes, etc., the invented device can detect the constitutents and concentrations of the acid bath on-line automatically. The detected signals can be transferred to the autoamtic allotment system so as to control the procedure of the acid bath and guarantee the quality of the fibers.

Description

1. Technical field [0001] The invention relates to a method and a detection instrument for detecting the concentration change of each component in an acid bath during the spinning process of the chemical fiber industry, in particular to an on-line detection method and a detection instrument for the concentration of components in an acid bath. 2. Background technology [0002] In the production process of viscose fiber in the chemical fiber industry, spinning is a very important link. The so-called spinning refers to converting viscose into solid fibers with certain physical properties through certain mechanical equipment and coagulation medium (also called acid bath) according to certain rules. In the spinning process, the content of each component in the acid bath (H 2 SO 4 , ZnSO 4 、Na 2 SO 4 Concentration) plays a very important role in the formation of viscose fiber, fiber structure and mechanical properties. [0003] From the perspective of production technology, ...

Claims

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Application Information

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IPC IPC(8): G01N31/16G01N35/00G05D21/00
Inventor 米文达
Owner 米文达
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