Yellowing automatic control system in production of short fiber stock solution viscose

Abstract

The invention provides a yellow automation control system in the production of short -fiber jelly glue. By improving and optimizing the existing automatic control system, the redundant process control software is used to build a redundant process control system.The automatic control system in production, including the control unit in order: alkaline fiber feed control unit, real vacuum control unit, CS2 feed control unitMaterial control unit and yellow chemical machine flushing control unit; this control system can accurately control the amount of materials added to each material, ensure the quality of sticky glue after the last yellowing, reduce artificial labor, save costs, and improve production efficiency.

Description

technical field

[0001] The invention relates to a DCS automatic control system, more specifically, the invention relates to a yellowing 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] Automatic control refers to ...

Examples

Embodiment 1

[0037] The yellowing automatic control system in the production of short fiber stock solution viscose, including a yellowing machine, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals, and the upper computer operation station adopts redundant process control software Build a redundant process control system and establish an automatic yellowing control system in the production of short fiber stock solution viscose; the yellowing automatic control system in the production of short fiber stock solution viscose adopts a sequential control mode, including the following sequential control units:

[0038] A. Alkali fiber feeding control unit: a weighing sensor and a PID controller are installed on the alkali fiber feeding belt to control the start and stop of the belt;

[0039] B. Vacuum degree control unit: including a vacuum pump for vacuumizing the yellowing machine; the yellowing machine is provided with a vacuum sens...

Embodiment 2

[0054] The yellowing automatic control system in the production of short fiber stock solution viscose, including a yellowing machine, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals, and the upper computer operation station adopts redundant process control software Build a redundant process control system and establish an automatic yellowing control system in the production of short fiber stock solution viscose; the yellowing automatic control system in the production of short fiber stock solution viscose adopts a sequential control mode, including the following sequential control units:

[0055] A. Alkali fiber feeding control unit: a weighing sensor and a PID controller are installed on the alkali fiber feeding belt to control the start and stop of the belt;

[0056] B. Vacuum degree control unit: including a vacuum pump for vacuumizing the yellowing machine; the yellowing machine is provided with a vacuum sens...

Embodiment 3

[0071] The yellowing automatic control system in the production of short fiber stock solution viscose, including a yellowing machine, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals, and the upper computer operation station adopts redundant process control software Build a redundant process control system and establish an automatic yellowing control system in the production of short fiber stock solution viscose; the yellowing automatic control system in the production of short fiber stock solution viscose adopts a sequential control mode, including the following sequential control units:

[0072] A. Alkali fiber feeding control unit: a weighing sensor and a PID controller are installed on the alkali fiber feeding belt to control the start and stop of the belt;

[0073] B. Vacuum degree control unit: including a vacuum pump for vacuumizing the yellowing machine; the yellowing machine is provided with a vacuum sens...

technical field

[0001] The invention relates to a DCS automatic control system, more specifically, the invention relates to a yellowing 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] Automatic control refers to ...

Examples

Embodiment 1

[0037] The yellowing automatic control system in the production of short fiber stock solution viscose, including a yellowing machine, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals, and the upper computer operation station adopts redundant process control software Build a redundant process control system and establish an automatic yellowing control system in the production of short fiber stock solution viscose; the yellowing automatic control system in the production of short fiber stock solution viscose adopts a sequential control mode, including the following sequential control units:

[0038] A. Alkali fiber feeding control unit: a weighing sensor and a PID controller are installed on the alkali fiber feeding belt to control the start and stop of the belt;

[0039] B. Vacuum degree control unit: including a vacuum pump for vacuumizing the yellowing machine; the yellowing machine is provided with a vacuum sens...

Embodiment 2

[0054] The yellowing automatic control system in the production of short fiber stock solution viscose, including a yellowing machine, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals, and the upper computer operation station adopts redundant process control software Build a redundant process control system and establish an automatic yellowing control system in the production of short fiber stock solution viscose; the yellowing automatic control system in the production of short fiber stock solution viscose adopts a sequential control mode, including the following sequential control units:

[0055] A. Alkali fiber feeding control unit: a weighing sensor and a PID controller are installed on the alkali fiber feeding belt to control the start and stop of the belt;

[0056] B. Vacuum degree control unit: including a vacuum pump for vacuumizing the yellowing machine; the yellowing machine is provided with a vacuum sens...

Embodiment 3

[0071] The yellowing automatic control system in the production of short fiber stock solution viscose, including a yellowing machine, is characterized in that it also includes an upper computer operation station for receiving and analyzing signals, and the upper computer operation station adopts redundant process control software Build a redundant process control system and establish an automatic yellowing control system in the production of short fiber stock solution viscose; the yellowing automatic control system in the production of short fiber stock solution viscose adopts a sequential control mode, including the following sequential control units:

[0072] A. Alkali fiber feeding control unit: a weighing sensor and a PID controller are installed on the alkali fiber feeding belt to control the start and stop of the belt;

[0073] B. Vacuum degree control unit: including a vacuum pump for vacuumizing the yellowing machine; the yellowing machine is provided with a vacuum sens...