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Method for controlling compressed air under non-production mode by virtue of acid regeneration desilication system

A technology of compressed air and production mode, which is applied in the field of control of compressed air in the reaction tank under the non-production mode of the acid regeneration desiliconization system, which can solve problems such as blockage of compressed air pipes, and achieve the effect of solving blockage and good desiliconization effect

Active Publication Date: 2014-04-30
SHOUGANG CORPORATION
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  • Abstract
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a method for controlling compressed air in the non-production mode of the acid regeneration desiliconization system, so as to solve the problem that the compressed air pipe of the acid regeneration desilication system is blocked in the desiliconization non-production mode for a long time

Method used

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Embodiment Construction

[0019] The invention provides a method for controlling compressed air in a non-production mode of an acid regeneration desilication system, comprising: the acid regeneration desilication unit is in a non-production mode (ie, desiliconization cycle and desiliconization shutdown), intermittently feeding compressed air .

[0020] Among them, the flow rate of compressed air is 50m 3 / h to 120m 3 / h, preferably 80m 3 / h, the method of intermittently feeding compressed air includes:

[0021] After the acid regeneration desilication system is stopped, the duration of stopping the feeding of compressed air is 2 hours to 6 hours, preferably 4 hours, and then the compressed air is fed for 3 minutes to 10 minutes, preferably 5 minutes, and the cycle is carried out.

[0022] In the embodiment of the present invention, by modifying the acid regeneration PLC program, increasing the air flow on-off delay and increasing the delay time sequence, it is realized that after the air flow settin...

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Abstract

The invention discloses a method for controlling compressed air under a non-production mode by virtue of an acid regeneration desilication system, and the method comprises the following step of: intermittently introducing the compressed air when the acid regeneration desilication system is under the non-production mode. By adopting the method for controlling the compressed air under the non-production mode by virtue of the acid regeneration desilication system, the problem that a compressed air tube is blocked under the desilication non-production mode for a long time is solved by accurately controlling the opening time sequence and flow of the compressed air under the desilication non-production mode, and the pH value of acid liquor in a reaction tank is not influenced, so that a desilication system can achieve a good desilication effect in short time after production is resumed.

Description

technical field [0001] The invention relates to the technical field of acid regeneration by cold rolling, in particular to a method for controlling the compressed air of a reaction tank in the non-production mode of an acid regeneration desiliconization system. Background technique [0002] The cold-rolled acid regeneration desilication unit is to adjust the PH value of the waste acid by adjusting the PH value of the waste acid suspended and colloidal silica in the waste acid discharged from the pickling. 2 The particles are adsorbed in the three-phase structure of the colloidal ferric hydroxide, and the precipitate is separated to achieve the purpose of reducing the silicon content. [0003] The cooled waste acid enters the oxidation reaction tank, and is mixed with the added ammonia water under the stirring of the stirrer, and a part of Fe in the waste acid is mixed. 2+ Oxidation produces hydroxide. The amount of ammonia added is determined according to the amount of was...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/36
Inventor 左智宏刘路昭郭鑫高国强韩振坤乔建军陈甚超刘秀丽蔡阿云
Owner SHOUGANG CORPORATION
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