JP3240283U - Automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity - Google Patents

Abstract

A system for automatically regenerating a cation exchange resin having unsteady hydrogen conductivity is provided.
An automatic regeneration device for a cation exchange resin with unsteady hydrogen conductivity comprises a housing 14, a controller 2 provided in the housing, a conversion liquid storage tank 9, a regeneration liquid storage tank 10, a waste liquid storage tank 13, a positive An ion-exchange resin column 5, a conductivity meter 3, an electromagnetic four-way valve 6, an electromagnetic three-way valve 11, and a pump 7 are provided. The electromagnetic four-way valves are respectively connected to the outlet of the cation exchange resin column and the outlet of the conversion liquid storage tank via pipes. , the outlet of the regenerated liquid storage tank, and the inlet of the pump, the outlet of the pump communicates with the inlet of the regenerated cation exchange resin column 8, and the electromagnetic three-way valve communicates with the inlet of the conductivity meter and the regenerated positive through piping, respectively. Communicate with the outlet of the ion exchange resin column and the inlet of the waste liquid storage tank, the outlet of the conductivity meter communicates with the waste liquid storage tank, and the controller is electrically connected to the conductivity meter, the electromagnetic four-way valve, and the electromagnetic three-way valve, respectively. be done.
[Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to the technical field of resin regeneration, and more particularly to an automatic regeneration apparatus for cation exchange resins with unsteady hydrogen conductivity.

Hydrogen conductivity is one of the water quality indicators strictly controlled by the power plant steam system, which quickly and sensitively reflects the total amount of anionic impurities in the steam, and also reflects the water purity of the steam system. Therefore, accurate and continuous measurement of the hydrogen conductivity at each steam sampling point can ensure the safety of the generator set, and the hydrogen conductivity measurement is also the most basic of steam quality. It is also a control item. Before measuring the hydrogen conductivity, the water sample first flows through a cation exchange resin column to remove alkalizing agents such as ammonia in the water sample. becomes ineffective due to adsorption saturation, thus necessitating regeneration of ineffective cation exchange resins.

Conventional invalid resin regeneration adopts the method of external static regeneration, the regeneration rate is low, the regeneration rate is generally 60-70%, and when the regeneration rate reaches a certain level, the soaking time is extended. Even if the amount of regenerating solution used is increased or the number of times of regeneration is increased, the degree of regeneration does not improve significantly. Using a low cation exchange resin to measure the hydrogen conductivity results in inaccurate measurements and consequently inaccurate water vapor quality control. Chinese patent CN202606165.3 discloses a cation exchange resin dynamic regeneration device for measuring hydrogen conductivity in thermal power plants, which makes the regeneration degree of cation exchange resin reach more than 95%, It can reduce the consumption, shorten the regeneration time, ensure the sufficient degree of resin regeneration, and improve the accuracy of hydrogen conductivity measurement results. Regeneration requires the useless resin to be transferred to the equipment, and the resin itself adheres to some extent to the replacement column and must be washed away to achieve complete transfer. It will cause waste and increase the inconvenience of operation, and the volume of resin filled in the device is relatively limited, and the amount of invalid resin is large, so the number of times of regeneration needs to be increased. . Chinese patent CN202020570621.4 discloses a membrane-free ion-exchange resin electrical regeneration device based on filter element electrodes, which uses OH- and H+ produced by the electrolysis of water to regenerate ineffective ion-exchange resin, Compared with the traditional chemical regeneration method, it can achieve green regeneration of ion exchange resin, but the equipment itself has defects, it cannot achieve dynamic regeneration of resin, it is essentially static regeneration, and regeneration of resin In addition, when hydrogen ions are produced by electrolysis, hydrogen gas may be produced, which poses a safety risk in an emergency, and finally, the concentration of the acid produced by electrolysis is uncontrollable and the acid solution in the system is not uniform, resulting in low regeneration efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks of the prior art and provide an automatic regeneration apparatus for cation exchange resins with unsteady hydrogen conductivity.

The object of the present invention can be achieved by the following technical solutions.

An automatic regeneration device for a cation exchange resin with unsteady hydrogen conductivity, which is used to regenerate a regenerated cation exchange resin column, the automatic regeneration device comprising a housing, a controller provided in the housing, a conversion liquid Equipped with a storage tank, a regenerated liquid storage tank, a waste liquid storage tank, a cation exchange resin column, a conductivity meter, an electromagnetic four-way valve, an electromagnetic three-way valve, and a pump, and the electromagnetic four-way valves are respectively connected to the cation exchange resin column via piping. , the outlet of the conversion liquid storage tank, the outlet of the regenerated liquid storage tank, and the inlet of the pump, the outlet of the pump communicates with the inlet of the regenerated cation exchange resin column, and the electromagnetic three-way valve connects the pipes through the inlet of the conductivity meter, the outlet of the regenerated cation exchange resin column, and the inlet of the waste liquid storage tank, the outlet of the conductivity meter communicates with the waste liquid storage tank, and the controller comprises a conductivity meter, an electromagnetic It is electrically connected to the four-way valve and the electromagnetic three-way valve, the conversion liquid is provided in the conversion liquid storage tank, and the regeneration liquid is provided in the regeneration liquid storage tank.

Preferably, said regenerated cation exchange resin column is a resin column filled with voided cation exchange resin.

Preferably, said controller is a PLC controller.

Preferably, said pump is a constant flow pump.

Preferably, the housing is provided with a telescoping handle.

Preferably, casters are provided at the bottom of the housing.

Preferably, the housing is further provided with a power switch connected to the controller.

Preferably, said conversion liquid is a 10-20 wt % NaCl solution.

Preferably, said regeneration liquid is a 5 wt % HCl solution.

Compared with the prior art, the beneficial effects of the present invention are as follows. This regenerating device overcomes the immobility of the traditional regenerating device, realizes portability and intelligentization, can realize dynamic protection for cation exchange resin, avoids resin crushing due to sudden change of chemical environment, and automatically It regenerates effectively, does not require a person on duty, has a high regeneration efficiency and a high regeneration rate, collects waste liquid, improves the recycling rate of resources, and accurately measures the hydrogen conductivity of water samples. It is advantageous to ensure the accuracy of quality control of water vapor.

1 is a structural schematic diagram of an apparatus according to an embodiment of the present invention; FIG.

The present invention will be described in detail below with reference to the drawings and specific embodiments. However, the descriptions of the embodiments below are substantially mere examples, and the present invention is not intended to limit its applications or uses, and the present invention is not limited to the following embodiments.

<Example>
An automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity, which is used to regenerate a regeneration cation exchange resin column 8, as shown in FIG. It is a resin column filled with a cation exchange resin, and the automatic regeneration device includes a housing 14, a controller 2 provided in the housing 14, a converted liquid storage tank 9, a regenerated liquid storage tank 10, a waste liquid storage tank 13, a cation An exchange resin column 5, a conductivity meter 3, an electromagnetic four-way valve 6, an electromagnetic three-way valve 11, and a pump are provided. It communicates with the outlet, the outlet of the regenerated liquid storage tank 10, and the inlet of the pump, the outlet of the pump communicates with the inlet of the regenerated cation exchange resin column 8, and the electromagnetic three-way valve 11 is connected to the conductivity meter 3 via piping. It communicates with the inlet, the outlet of the regenerated cation exchange resin column 8, and the inlet of the waste liquid storage tank 13, and the outlet of the conductivity meter 3 communicates with the waste liquid storage tank 13. 6, and an electromagnetic three-way valve 11, a conversion liquid is provided in a conversion liquid storage tank 9, and a regeneration liquid is provided in a regeneration liquid storage tank. Specifically, the capacity of the conversion liquid storage tank 9, the regenerated liquid storage tank 10, and the waste liquid storage tank 13 can all be adjusted according to the volume of the regenerated resin. % NaCl solution and the regeneration liquid is a 5 wt % HCl solution.

In this example the controller 2 used is a PLC controller 2 and the pump is a constant flow pump 7 . For the convenience of moving and using the automatic playback device, the housing 14 is provided with a retractable handle 4, the bottom of the housing 14 is provided with casters 12, and the housing 14 is further provided with a power switch 1 connected to the controller 2. be done.

In this embodiment, in order to improve the strength of the device, the housing 14 is made of aluminum alloy, and the telescopic handle 4 is made of aluminum alloy, which has telescopic function and can withstand 20 kg of gravity. , the caster 12 is made of hard rubber and has a self-locking function.

When this embodiment is used, the power switch 1 is connected to a 220V AC power supply through a power adapter, and the controller 2 includes a controller containing a PLC control module and a PLC judgment module, a serial port server, and a display panel. It is configured and can be controlled by online input of control parameters such as regeneration resin volume, conversion liquid volume, regeneration liquid volume, demineralized water pre-wash time, constant flow pump 7 flow rate, and conductivity feedback value. The flow pump 7 and the solenoid valve can be controlled, serial communication and notification transmission can be performed, the conductivity meter 3 is a hydrogen conductivity meter 3, the measurement range is 0 to 1 μS / cm, and the controller The hydrogen conductivity value can be fed back to 2, the cation exchange resin column 5 is a resin column filled with hydrogen type cation exchange resin, the inlet is connected to the on-site demineralized water, and the upper part is a transparent An exhaust cap made of organic glass is provided, the electromagnetic four-way valve 6 can be controlled by the controller 2 to switch the inlet position of the four-way valve, the constant flow pump 7 has a double plunger structure, and the flow rate is 1 to 1. It is continuously adjustable within a range of 20 mL/s, and the electromagnetic three-way valve 11 can be controlled by the controller 2 to switch the outlet position of the three-way valve.

The above embodiments are merely examples and are not intended to limit the scope of the present invention. These embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the technical idea of the present invention.

1 Power switch 2 Controller 3 Conductivity meter 4 Telescopic handle 5 Cation exchange resin column 6 Electromagnetic four-way valve 7 Constant flow pump 8 Regenerated cation exchange resin column 9 Conversion liquid storage tank 10 Regeneration liquid storage tank 11 Electromagnetic three-way valve 12 Caster 13 Waste liquid storage tank 14 housing

Claims (7)

An automatic regeneration device for a cation exchange resin with unsteady hydrogen conductivity for regenerating a regenerated cation exchange resin column (8), comprising: a housing (14); a controller ( 2), conversion liquid storage tank (9), regeneration liquid storage tank (10), waste liquid storage tank (13), cation exchange resin column (5), conductivity meter (3), electromagnetic four-way valve (6), electromagnetic A three-way valve (11) and a pump are provided, and the electromagnetic four-way valve (6) is connected via pipes to the outlet of the cation exchange resin column (5), the outlet of the conversion liquid storage tank (9), and the regeneration liquid. It communicates with the outlet of the storage tank (10) and the inlet of the pump, the outlet of the pump communicates with the inlet of the regenerated cation exchange resin column (8), and the electromagnetic three-way valve (11) connects the pipes. through the inlet of the conductivity meter (3), the outlet of the regenerated cation exchange resin column (8), and the inlet of the waste liquid storage tank (13), and the outlet of the conductivity meter (3) communicates with the Communicating with a waste liquid storage tank (13), the controller (2) is electrically connected to the conductivity meter (3), the electromagnetic four-way valve (6) and the electromagnetic three-way valve (11) respectively, and the conversion An automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity, characterized in that a conversion liquid is provided in a liquid storage tank (9), and a regeneration liquid is provided in the regeneration liquid storage tank (10). The automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity according to claim 1, characterized in that said regeneration cation exchange resin column (8) is a resin column filled with invalid cation exchange resin. The automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity according to claim 1, characterized in that said controller (2) is a PLC controller (2). The automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity according to claim 1, characterized in that said pump is a constant flow pump (7). The automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity according to claim 1, characterized in that said housing (14) is provided with a telescopic handle (4). The automatic regeneration device for cation exchange resin with unsteady hydrogen conductivity according to claim 1, characterized in that casters (12) are provided at the bottom of the housing (14). The unsteady hydrogen conductivity cation exchange resin of claim 1, characterized in that the housing (14) is further provided with a power switch (1) connected to the controller (2). Autoplay device.

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