System and method for automatically balancing ratio of cation resin to anion resin

Abstract

The invention discloses a system and a method for automatically balancing the ratio of cation resin to anion resin. The system comprises a sonar sensor, a middle sight glass light-operated sensor, a bottom sight glass light-operated sensor, an anion resin outlet pipeline and a cation resin outlet pipeline, the sonar sensor is installed at the top of the separation tower, the middle sight glass light-operated sensor is installed outside a sight glass in the middle of the separation tower, the bottom sight glass light-operated sensor is installed outside a sight glass at the bottom of the separation tower, the anion resin outlet pipeline is communicated with an anion resin outlet in the side face of the separation tower, and the cation resin outlet pipeline is communicated with a cation resin outlet in the bottom of the separation tower; and the control system is connected with the sonar sensor, the bottom sight glass light-operated sensor and the middle sight glass light-operated sensor. The system and the method can accurately determine the ratio of the positive resin to the negative resin of the high-speed mixed bed.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to an automatic balancing system and method for proportioning cation and anion resins. Background technique [0002] The high-speed mixed bed is the most widely used desalination equipment in the condensate polishing system of thermal power plants. In order to remove all kinds of dissolved impurity ions in the condensate water, the purpose of purifying the boiler feed water is achieved. [0003] The high-speed mixed bed has two operating modes: hydrogen type and ammoniation. During hydrogen type operation, the high-speed mixed bed has the function of desalting. When the ammonia content of the effluent begins to increase, the high-speed mixed bed begins to ammoniation. After all the cation resins are converted into ammonia-type resins, the high-speed mixed bed no longer has the ability to remove salts. , only a small amount of iron corrosion products and silicon compounds can be remove...

AI Technical Summary

Problems solved by technology

When it is higher than the preset position, part of the resin in the fat-mixed layer of the separation tower will be transported to the yin regeneration tower, causing the "yin in the yang" to exceed the standard, and "cross-contamination" of anion resin regeneration will occur, and the regeneration effect will become poor; When it is lower than the preset position, it indicates that the total amount of resin in this set is relatively small, and a part of the expired resin still remains inside the high-speed mixed bed, which cannot be regenerated, resulting in a shorter operating cycle of the high-speed mixed bed

In addition, when the resin interface of the mixed fat layer is not captured accurately, there will also be a problem that part of the resin in the mixed fat layer of the separation tower will be transported to the cation regeneration tower, resulting in "yang bardo" exceeding the standard, and "cross-contamination" in the regeneration of cation resin , not only affects the high-mixed effluent water quality, but also affects the high-mixed hydrogen type operation cycle

Usually, the two machines share a set of in vitro regeneration system, so as the operating time of the system prolongs, if the resin ratio of one set is confused, the resin ratio of other sets will also be affected by it during regeneration, resulting in The operation period of each mixed bed is different, which is not conducive to the daily operation and management of the system

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