Continuous-evacuation automatic control system for crude short-fiber viscose production

An automatic control system and short fiber technology, applied in fiber processing, comprehensive factory control, comprehensive factory control, etc., can solve problems such as excessive variation in glue supply, precise control of process parameters, and inability to guarantee defoaming, etc., to achieve improved Efficiency, improvement of defoaming quality, and improvement of continuous production capacity

An automatic control system and short fiber technology, applied in fiber processing, comprehensive factory control, comprehensive factory control, etc., can solve problems such as excessive variation in glue supply, precise control of process parameters, and inability to guarantee defoaming, etc., to achieve improved Efficiency, improvement of defoaming quality, and improvement of continuous production capacity

CN102505152BActive Publication Date: 2014-05-21YIBIN HIEST FIBER +1

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The continuous defoaming automatic control system in the production of short fiber raw liquid viscose, including a defoaming glue supply pump, a continuous defoaming barrel and a defoaming glue output pump, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals , the upper computer operation station adopts redundant process control software to build a redundant process control system to set up a continuous defoaming automatic control system in the production of short fiber stock solution viscose; The absolute pressure transmitter connected with the PID controller of the pressure, the steam regulating valve connected with the PID controller for controlling the degassing vacuum degree and the emptying valve are adjusted according to the degassing pressure to be 1mbar for the degassing vacuum degree; The continuous defoaming tank is also equipped with a temperature sensor and a PID controller to control the temperat...

Embodiment 2

[0034] The continuous defoaming automatic control system in the production of short fiber raw liquid viscose, including a defoaming glue supply pump, a continuous defoaming barrel and a defoaming glue output pump, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals , the upper computer operation station adopts redundant process control software to build a redundant process control system to set up a continuous defoaming automatic control system in the production of short fiber stock solution viscose; The absolute pressure transmitter connected with the PID controller of the pressure, the steam regulating valve and the exhaust valve connected with the PID controller for controlling the degassing vacuum degree are adjusted to be 15mbar according to the degassing pressure; the described The continuous defoaming barrel is also equipped with a temperature sensor and a PID controller to control the temperature and adjust t...

Embodiment 3

[0041]The continuous defoaming automatic control system in the production of short fiber raw liquid viscose, including a defoaming glue supply pump, a continuous defoaming barrel and a defoaming glue output pump, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals , the upper computer operation station adopts redundant process control software to build a redundant process control system to set up a continuous defoaming automatic control system in the production of short fiber stock solution viscose; The absolute pressure transmitter connected with the PID controller of the pressure, the steam regulating valve and the exhaust valve connected with the PID controller for controlling the degassing vacuum degree are adjusted according to the degassing pressure to be 8mbar; the described The continuous defoaming barrel is also equipped with a temperature sensor and a PID controller to control the temperature and adjust the...

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

No PUM Login to View More

Abstract

The invention provides a continuous-evacuation automatic control system for crude short-fiber viscose production, which is set up by modifying and optimizing an existing automatic control system, and using redundancy process control software to set up a redundancy process control system. By controlling evacuation vacuum degree, viscose supply and viscose discharge and highly integrating a controller and a sensor to equipment through the modified continuous-evacuation automatic control system, occupation of a production site is relieved, continuous evacuation capacity and evacuation quality are improved, and continuous production is realized.

Description

technical field [0001] The present invention relates to a DCS automatic control system, more specifically, the present invention relates to a continuous defoaming automatic control system in the production of short fiber stock solution viscose. It belongs to the field of man-made fibers. Background technique [0002] Viscose preparation is one of the most important and critical processes in the whole viscose fiber production process. It is to impregnate the solid pulp to produce alkali cellulose, and then transport it to the yellowing machine through pressing, crushing and aging processes. CS2 reacts to produce cellulose xanthate, and then dissolves cellulose xanthate in lye to obtain liquid viscose. The viscose is filtered and defoamed to eliminate impurities and air bubbles, and the viscose is adjusted through the aging process. Viscosity and maturity, and finally produce the raw liquid viscose that meets the performance requirements of the subsequent process. [0003] A...

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
21 May 2014
Publication
CN102505152B
IPC
G05B19/418; D01D1/10
CPC
Y02P90/02
Inventors
董金华; 何戟