Liquid concentration control supply apparatus

A liquid concentration control and supply apparatus used in a reaction apparatus for controlling the concentration of liquid input into the reaction apparatus to undergo chemical reaction, the liquid concentration control and supply apparatus comprising:

• a liquid mixing device, being a mixed liquid storage vessel;
• a liquid level sensor arranged in the liquid mixing device for detecting the height of mixed liquid level in the liquid mixing device;
• a liquid transport device, being mechanically connected to the liquid mixing device and the reaction apparatus for transporting the liquid in the liquid mixing device to the reaction apparatus and transporting the liquid in the reaction apparatus after reaction to the liquid mixing device;
• a liquid concentration detector for detecting the concentration of liquid be transported from the liquid mixing device to the reaction apparatus and defining said concentration as a mixed liquid concentration;
• a liquid storage device comprising a high-concentration storage tank for storing the replenishing liquid, the concentration of the replenishing liquid being higher than a preset concentration, the liquid mixing device transporting the liquid stored therein to the liquid mixing device;
• and
• a control element for controlling the operation of the liquid concentration control and supply apparatus, comprising the steps of:
• the liquid concentration detector detecting the mixed liquid from the liquid mixing device to the reaction apparatus to obtain the mixed liquid concentration;
• the liquid level sensor detecting the height of mixed liquid level in the liquid mixing device and transporting the same information to the control element;
• the control element determining whether the mixed liquid concentration detected falls in a lag range referencing to the preset concentration;
• when the mixed liquid concentration is below the lag range referencing to the preset concentration, the control element, based on the information on the height of mixed liquid level fed back by the liquid level sensor, computing a first anticipated height of mixed liquid level after replenishing liquid output by the high-concentration storage tank is added into the liquid mixing device;
• the control element controlling the output of replenishing liquid by the high-concentration storage tank of the liquid storage device until the height of mixed liquid level in the liquid mixing device reaches the first anticipated height of mixed liquid level, and upon which, the control element stopping the output of replenishing liquid by the high-concentration storage tank of the liquid storage device;
• and
• when the mixed liquid concentration falls in the lag range referencing to the preset concentration, carrying out the step of concentration detection by the liquid concentration detector.