Operation support apparatus, operation support system, operation support method, and computer readable medium

Patent metadata

Field	Value
Publication number	US-2023399763-A1
Application number	US-202318458158-A
Country	US
Kind code	A1
Filing date	Aug 30, 2023
Priority date	May 27, 2021
Publication date	Dec 14, 2023
Grant date	—

Abstract

Provided is an operation support apparatus comprising: a production efficiency acquisition unit which acquires production efficiency of an electrolysis tank; a determination unit which determines whether the production efficiency of the electrolysis tank acquired by the production efficiency acquisition unit is below a predetermined production efficiency threshold value; and an identification unit which identifies, if it is determined by the determination unit that the production efficiency of the electrolysis tank is below the production efficiency threshold value, a first factor for which the production efficiency of the electrolysis tank has fallen below the production efficiency threshold value.

First claim

What is claimed is:

1 . An operation support apparatus comprising:
a production efficiency acquisition unit which acquires production efficiency of an electrolysis tank; a determination unit which determines whether the production efficiency of the electrolysis tank acquired by the production efficiency acquisition unit is below a predetermined production efficiency threshold value; and an identification unit which identifies, if it is determined by the determination unit that the production efficiency of the electrolysis tank is below the production efficiency threshold value, a first factor for which the production efficiency of the electrolysis tank has fallen below the production efficiency threshold value.

2 . The operation support apparatus according to claim 1 , wherein
the production efficiency acquisition unit acquires the production efficiency of the electrolysis tank in real time, the determination unit determines in real time whether the production efficiency of the electrolysis tank is below the production efficiency threshold value, and the identification unit identifies the first factor in real time.

3 . The operation support apparatus according to claim 1 , wherein
the identification unit identifies a first impurity which is in the electrolysis tank and corresponds to the first factor, and identifies a first countermeasure which corresponds to the first factor and is for suppressing a decrease in the production efficiency of the electrolysis tank and recovering the production efficiency.

4 . The operation support apparatus according to claim 3 , wherein
the identification unit identifies the first factor, the first impurity, and the first countermeasure in real time.

5 . The operation support apparatus according to claim 1 , wherein
the production efficiency is current efficiency, and the determination unit determines whether the current efficiency is below a predetermined current efficiency threshold value.

6 . The operation support apparatus according to claim 5 , further comprising a voltage acquisition unit which acquires voltage to be supplied to the electrolysis tank, wherein
when determining that the current efficiency is equal to or greater than the current efficiency threshold value, the determination unit further determines whether the voltage acquired by the voltage acquisition unit is above a predetermined voltage threshold value, and if it is determined by the determination unit that the voltage is above the voltage threshold value, the identification unit identifies a second factor for which the voltage has gone above the voltage threshold value.

7 . The operation support apparatus according to claim 6 , wherein
the determination unit calculates an electric power consumption rate of the electrolysis tank based on at least one of the current efficiency or the voltage, and the production efficiency is the current efficiency, or the electric power consumption rate calculated by the determination unit.

8 . The operation support apparatus according to claim 7 , wherein
if the production efficiency is the electric power consumption rate, the determination unit determines whether the electric power consumption rate is equal to or greater than a predetermined electric power consumption rate threshold value, and if it is determined by the determination unit that the electric power consumption rate of the electrolysis tank is equal to or greater than an electric power consumption rate threshold value, the identification unit identifies the first factor or the second factor.

9 . The operation support apparatus according to claim 6 , wherein
the voltage acquisition unit acquires in real time the voltage to be supplied to the electrolysis tank, the determination unit determines in real time whether the voltage to be supplied to the electrolysis tank is above the voltage threshold value, and the identification unit identifies the second factor in real time.

10 . The operation support apparatus according to claim 6 , wherein
the identification unit identifies a second impurity which is in the electrolysis tank and corresponds to the second factor, and identifies a second countermeasure which corresponds to the second factor and is for suppressing an increase in the voltage and recovering the voltage.

11 . The operation support apparatus according to claim 10 , wherein
the identification unit identifies the second factor, the second impurity, and the second countermeasure in real time.

12 . The operation support apparatus according to claim 3 , further comprising a storage unit which stores the first factor, the first impurity corresponding to the first factor, and the first countermeasure corresponding to the first factor.

13 . The operation support apparatus according to claim 10 , further comprising a storage unit which stores the second factor, the second impurity corresponding to the second factor, and the second countermeasure corresponding to the second factor.

14 . The operation support apparatus according to claim 6 , wherein
at least one of the production efficiency threshold value or the voltage threshold value changes as working time of the electrolysis tank elapses.

15 . The operation support apparatus according to claim 1 , further comprising a pH acquisition unit and a production efficiency calculation unit which calculates the production efficiency of the electrolysis tank, wherein
the electrolysis tank includes an ion exchange membrane, and an anode chamber and a cathode chamber which are separated by the ion exchange membrane, an aqueous solution of alkali metal chloride is introduced into the anode chamber, the pH acquisition unit acquires pH of the aqueous solution of alkali metal chloride introduced into the anode chamber, the production efficiency calculation unit calculates the production efficiency of the electrolysis tank based on the pH of the aqueous solution of alkali metal chloride acquired by the pH acquisition unit, and the production efficiency acquisition unit acquires the production efficiency of the electrolysis tank calculated by the production efficiency calculation unit.

16 . The operation support apparatus according to claim 15 , wherein
the aqueous solution of alkali metal chloride is a sodium chloride aqueous solution or a potassium chloride aqueous solution, if the sodium chloride aqueous solution is introduced into the anode chamber, a sodium hydroxide aqueous solution is introduced into the cathode chamber, and if the potassium chloride aqueous solution is introduced into the anode chamber, a potassium hydroxide aqueous solution is introduced into the cathode chamber, the operation support apparatus further comprises a concentration calculation unit which calculates, based on the pH acquired by the pH acquisition unit, an oxygen concentration, a hypochlorous acid concentration, and a sodium chlorate concentration in the anode chamber, as well as a hydrogen ion concentration and a hydroxide ion concentration of the sodium chloride aqueous solution or the potassium chloride aqueous solution introduced into the anode chamber, the production efficiency calculation unit calculates the production efficiency of the electrolysis tank based on the oxygen concentration, the hypochlorous acid concentration, and the sodium chlorate concentration in the anode chamber as well as the hydroxide ion concentration of the sodium chloride aqueous solution or the potassium chloride aqueous solution introduced into the anode chamber and the hydrogen ion concentration of the sodium chlor

Assignees

• Asahi Chemical Ind

Inventors

• Anami Yasutaka

Classifications

• C25B15/033 Primary

  Conductivity · CPC title

• C25B9/19

  with diaphragms · CPC title

• C25B15/031

  pH · CPC title

• C02F1/461 Primary

  by electrolysis · CPC title

• C25B1/46 Primary

  in diaphragm cells · CPC title