Control system and control method for alkali liquor preparing system

A control system and lye technology, applied in the direction of alumina/aluminum hydroxide, etc., can solve the problems of inapplicability, the adjustment result deviates from the set value, etc., and achieve the effect of improving the adjustment effect.

Inactive Publication Date: 2010-12-08
SHENYANG BOYU TECH
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  • Abstract
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Problems solved by technology

[0003] Patent CN1837052A introduces a method of lye blending system, but this method is obviously not applicable in the case of fluctuations in the ratio of the original alkali components, and the blending result is far from the set value

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  • Control system and control method for alkali liquor preparing system
  • Control system and control method for alkali liquor preparing system

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Embodiment Construction

[0013] Such as figure 1 Shown, the control system of the lye blending system of the present invention, its structure is as follows: the output end of the mother liquor alkalinity meter 1 that is used to detect the mother liquor alkali concentration of the kind is connected with the input end of the microprocessor 3, is used for detecting evaporation The output end of mother liquor alkalinity meter 2 is connected with the input end of microprocessor 3 for the evaporation of mother liquor alkali concentration; The output end of the lye alkalinity meter 5 is connected with the input end of the microprocessor 3 after the mixing of the liquid concentration.

[0014] The control method of the lye preparation system of the present invention, it comprises the following steps: the seed demarcation mother liquor alkalinity meter 1 sends the detected kind demarcation mother liquor alkali concentration signal to the microprocessor 3; Evaporation mother liquor alkalinity meter 2 detects T...

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Abstract

The invention discloses a method for controlling an alkali liquor adjusting system used in a chemical production system, in particular relates to a method for controlling an alkali liquor adjusting system used in a system for producing alumina by Bayer process. The invention provides a control system and a control method of the alkali liquor adjusting system, wherein, the structure of the controlsystem is as follows: an output end of a seed precipitation mother liquor alkalimeter for detecting soda concentration of seed precipitation mother liquor and an output end of an evaporation mother liquor alkalimeter for detecting soda concentration of evaporation mother liquor are connected with the input end of a microprocessor; the output end of the microprocessor is connected with variable frequency speed regulation pumps for controlling the flow rate of the alkali liquor. The method increases the adjusting effect of the alkali liquor adjusting system, and can obtain good proportioning result even the proportioning raw alkali ingredients fluctuate.

Description

technical field [0001] The invention relates to the control method of the lye preparation system in the chemical production system, in particular to the control method of the lye preparation system in the Bayer process alumina production system. Background technique [0002] During the lye blending process, there are many types of raw solutions that need to be blended, and the production of downstream processes has strict requirements on the blended finished lye. Therefore, which control method is used to blend lye is of great significance to the realization of blending results. [0003] Patent CN1837052A introduces a method of lye blending system, but this method is obviously inapplicable in the case of fluctuations in the ratio of original alkali components, and the blending result deviates far from the set value. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a control method of the lye blending system, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/02
Inventor 王亮马书杰王剑
Owner SHENYANG BOYU TECH
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