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Load Optimization Method for Ion Membrane Electrolyzer

An ionic membrane electrolyzer and load optimization technology, applied in the field of electrolyzers, can solve the problems of high overall energy consumption, rising DC power consumption, high energy consumption, etc., achieve optimal operating conditions, reduce DC power consumption, and prolong operation The effect of longevity

Active Publication Date: 2018-07-03
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the operating conditions of each electrolyzer are different, and the cell voltage and operating parameters vary greatly under different loads. Therefore, in the traditional operation of each electrolyzer at an average load, the DC power consumption will increase, which will lead to the overall The comprehensive energy consumption of the device remains high, the production cost of the product is high, and the energy consumption is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) The total operating time of the ten electrolyzers is 5 years and the ionic membrane is more than 2 years, but the electrolyzer with better cell condition is operated at an average load and the cell voltage of each electrolyzer is recorded; the first electrolyzer u 1 4.0V, No. 2 electrolyzer U 2 4.1V, No. 3 electrolyzer U 3 It is 4.2V, No. 4 electrolyzer U 4 It is 4.2V, No. 5 electrolyzer U 5 It is 4.2V, No. 6 electrolyzer U 6 It is 5.9V, No. 7 electrolyzer U 7 It is 4.3V, No. 8 electrolyzer U 8 It is 4.1V, No. 9 electrolyzer U 9 It is 4.0V, No. 10 electrolyzer U 10 is 4.0V. Calculate the average cell voltage U 0 is 4.3. and further calculate and record U 1 -U 0 ~U 10 -U 0 value.

[0021] 2) In this example, the total operation of the electrolytic cell and the use time of the ion membrane have no effect on the classification, according to U 1 -U 0 ~U 10 -U 0 Judgment of the value: the difference between No. 1 electrolyzer, No. 9 electrolyzer, No. 10...

Embodiment 2

[0025] 1) Nine electrolyzers with operating time of ten years and in poor condition and one newly added No. 10 electrolyzer within one year, among which, the ion membrane of No. 1 electrolyzer was only used for three months after replacement. Record the cell voltage of each electrolyzer when each electrolyzer is running at an average load; No. 1 electrolyzer U 1 It is 5.0V, No. 2 electrolyzer U 2 It is 5.6V, No. 3 electrolyzer U 3 It is 5.2V, No. 4 electrolyzer U 4 It is 5.2V, No. 5 electrolyzer U 5 It is 5.2V, No. 6 electrolyzer U 6 It is 5.9V, No. 7 electrolyzer U 7 It is 5.3V, No. 8 electrolyzer U 8 It is 5.1V, No. 9 electrolyzer U 9 It is 5.0V, No. 10 electrolyzer U 10 is 4.0V. Calculate the average cell voltage U 0 is 5.15. and further calculate and record U 1 -U0 ~U 10 -U 0 value.

[0026] 2) In this example, the total operation of each electrolytic cell and the use time of ion membranes except electrolytic cell No. 10 will not affect the classification, ac...

Embodiment 3

[0030] 1) The ion membranes of the ten electrolyzers that have been in operation for ten years and are in poor condition are all more than 2 years old. Only the ion membrane of the No. 2 electrolyzer is only used for 5 months. Record the cell voltage of each electrolyzer when each electrolyzer is running at an average load; No. 1 electrolyzer U 1 5.4V, the second electrolyzer U 2 It is 5.6V, No. 3 electrolyzer U 3 It is 5.2V, No. 4 electrolyzer U 4 It is 5.7V, No. 5 electrolyzer U 5 It is 5.2V, No. 6 electrolyzer U 6 It is 5.9V, No. 7 electrolyzer U 7 It is 5.3V, No. 8 electrolyzer U 8 It is 5.1V, No. 9 electrolyzer U 9 It is 5.0V, No. 10 electrolyzer U 10 is 4.9V. Calculate the average cell voltage U 0 is 5.33. and further calculate and record U 1 -U 0 ~U 10 -U 0 value.

[0031] 2) In this example, the total operation of each electrolyzer except No. 1 -U 0 ~U 10 -U 0 Judgment of the value: the absolute value of the difference between No. 1 electrolyzer, No....

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Abstract

The invention relates to a load optimization method of an ion membrane electrolyzer, and belongs to the technical field of electrolyzers. The load optimization method is characterized in that the adjusting step is as follows: according to the average load operation situation of each electrolyzer, electrolyzers are divided into high, middle-high, middle, middle-low and low fives grade, under the premise of ensuring the same total current, according to the divided fives grade of the electrolyzers in step 2), partial current of each electrolyzer is adjusted, the partial current of a high grade electrolyzer is reduced to 10% to 30%, the partial current of a middle-high electrolyzer is reduced to 5% to 10%, the partial current of a middle electrolyzer is not changed, the partial current of a middle-low electrolyzer is increased by 5%-10%, and the partial current of a low electrolyzer is increased by 10% to 20%. Through the load optimization method for load optimization of the electrolyzers, low DC power consumption and low acid consumption of the electrolytic device can be achieved, and the operating life of an ionic membrane can be prolonged.

Description

technical field [0001] The invention relates to an ion membrane electrolyzer load optimization method, which belongs to the technical field of electrolyzers. Background technique [0002] The ionic membrane electrolysis device is generally composed of multiple electrolytic cells. During the operation process, affected by multiple factors such as the type of ionic membrane installed, the internal structure of the electrolytic cell, the running time of the electrolytic cell, and the number of interlocking shutdowns of the electrolytic cell, each The operating conditions of the electrolyzers are different, resulting in differences in the operating parameters of the electrolyzers, which makes the economic indicators of the electrolyzers vary greatly. The DC power consumption of an electrolytic cell is proportional to its cell voltage, while the cell voltage and operating current are not in a simple linear relationship. The higher the operating current, the higher the electrolyti...

Claims

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Application Information

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IPC IPC(8): C25B15/02C25C7/06
Inventor 李明
Owner CHINA PETROLEUM & CHEM CORP
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