CN111298849A - An anion resin regeneration device - Google Patents

Abstract

The invention discloses an anion resin regeneration device, comprising a casing, wherein a accommodating cavity for accommodating an anion resin mixed with cation resin at the bottom is arranged in the casing, a resin bottom outlet is arranged in the center of the bottom of the accommodating cavity, and the accommodating cavity is There is a resin side outlet on the side wall of the cavity and near the bottom. Using the different specific gravity of the anion resin and the cation resin, the pure anion resin is separately output through the resin side outlet, so that the anion resin is sent to the anion resin regeneration device. The cation resin, After the anion resin is regenerated and output, it still remains in the shell, and then it is output through the resin bottom outlet to prevent the anion resin mixed with sodium cation resin from being brought into the ion exchange equipment of the operating system, so as to avoid the anion resin regenerant. The Na ⁺ ions are brought into the mixed ion exchanger of the operating system with the sodium cation resin, which has reliable performance and simple structure, and is suitable for nuclear power conventional island condensate polishing system and thermal power condensate polishing system.

Description

An anion resin regeneration device

【Technical field】

The invention relates to the technical field of resin regeneration, in particular to the technical field of an anion resin regeneration device.

【Background technique】

In the nuclear power or thermal power condensate polishing system, after the resin in the mixed ion exchanger fails, the resin will be sent to the separation equipment in the ion exchange regeneration system for separation, and then the separated anion resin will be sent to the anion resin Regeneration is carried out in the regeneration equipment, and the separated cation resin will be sent to the cation resin regeneration equipment for regeneration. Since the specific gravity of the cation resin is larger than that of the anion resin, after the separation of the anion resin and the cation resin is completed, the anion resin is usually first transported to the anion resin regeneration equipment, and then the cation resin is transported to the cation resin regeneration equipment to meet the resin requirements. delivery requirements. In the national and related industry specifications, the volume ratio of the anion resin doped in the cation resin after separation is allowed to be less than 0.1%, and the volume ratio of the cation resin doped in the anion resin is less than 0.07%.

Under normal circumstances, the presence of the cation resin in the anion resin will cause the anion resin regenerant NaOH to contact the cation resin, causing Na ⁺ ions to be exchanged by H ⁺ ions in the cation resin, so that the cation resin in the anion resin will be converted into a sodium-type resin. Since the traditional equipment focuses on completely outputting and mixing all the resins in the anion resin regeneration equipment and the cation resin regeneration equipment, and then transporting them back to the mixed ion exchanger of the operating system, the Na ⁺ ions from the anion resin regeneration agent will be reduced. The sodium cation resin is brought into the mixed ion exchanger of the operating system, which eventually causes the difficulty of controlling the Na ⁺ ion level in the effluent of the operating system.

[Content of the invention]

The purpose of the present invention is to solve the problems in the prior art, and proposes an anion resin regeneration device, which can ensure that the sodium cation resin will not be brought into the operation system, has reliable performance and simple structure.

In order to achieve the above purpose, the present invention proposes an anion resin regeneration device, which includes a housing, and the housing is provided with a accommodating cavity for accommodating an anion resin mixed with cation resin at the bottom, and the center of the bottom of the accommodating cavity is provided with a resin bottom. The outlet, the side wall of the accommodating cavity is provided with a resin side outlet near the bottom.

Preferably, the casing comprises a cylinder body, an upper sealing head and a lower sealing head, the upper sealing head and the lower sealing head are respectively fixed on the upper and lower ends of the cylinder body and form a accommodating cavity together with the cylinder body, and the upper sealing head and the lower sealing head are respectively fixed on the upper and lower ends of the cylinder body The head is provided with a rinsing device, the side wall of the cylinder body is provided with a resin inlet near the upper end, and a water outlet orifice plate is fixed on the inner wall of the lower head so as to separate the accommodating cavity into the water outlet orifice plate. The upper cavity and the lower cavity are located under the water outlet orifice plate. The top surface of the water outlet orifice plate is provided with several water outlet caps, and the resin bottom outlet is located in the center of the bottom surface of the lower head and passes through the water outlet orifice plate. It communicates with the upper cavity, the resin side outlet is located on the side wall of the cylinder body and communicates with the upper cavity, and the bottom surface of the lower head is also provided with a water outlet communicated with the lower cavity.

Preferably, the upper head is a spherical convex plate, and the lower head is a spherical concave plate.

Preferably, the water outlet orifice plates are spherical concave plates.

Preferably, several support plates are vertically fixed between the lower head and the water outlet orifice.

Preferably, the support plates are located on the left and right sides of the resin bottom outlet and the water outlet.

Preferably, a resin sight glass is provided on the side wall of the casing and near the bottom.

Preferably, the outer wall of the casing is also provided with a video monitor for detecting the descending height of the anion resin in the accommodating cavity through the resin sight glass.

Preferably, a plurality of legs are arranged around the outer side of the lower end of the casing.

Preferably, the casing is made of stainless steel.

Beneficial effects of the present invention: the present invention utilizes the difference in specific gravity between the anion resin and the cation resin, and outputs pure anion resin through the resin side outlet, so that the cation resin sent to the anion resin regeneration device along with the anion resin is regenerated and output from the anion resin. After completion, it still remains in the shell, and then it is output through the resin bottom outlet to prevent the anion resin mixed with sodium cation resin from being brought into the ion exchange equipment of the operating system, so as to avoid the Na ⁺ ions of the anion resin regenerant with the sodium. The type cation resin is brought into the mixed ion exchanger of the operating system, with reliable performance and simple structure, and is suitable for the condensate polishing system of nuclear power conventional island and thermal power condensate polishing system.

The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is a half-section view of a kind of anion resin regeneration device of the present invention;

In the picture: 1- shell, 11- barrel body, 12- lower head, 2- resin side outlet, 3- water outlet cap, 4- support plate, 5- leg, 6- water outlet, 7- resin bottom Outlet, 8-water outlet orifice, 9-resin sight glass.

【Detailed ways】

Referring to FIG. 1, an anion resin regeneration device according to the present invention includes a housing 1, and a housing cavity for accommodating anion resin mixed with cationic resin at the bottom is provided in the housing 1, and a resin bottom is arranged in the center of the bottom of the housing cavity. Outlet 7, a resin side outlet 2 is provided on the side wall of the accommodating cavity and near the bottom, and the housing 1 includes a cylinder body 11, an upper head and a lower head 12, and the upper and lower heads 12 They are respectively fixed on the upper and lower ends of the cylinder body 11 and form a accommodating cavity together with the cylinder body 11. The upper sealing head is provided with a rinsing device, and the side wall of the cylinder body 11 is provided with a resin inlet near the upper end, so A water outlet orifice plate 8 is fixed on the inner wall of the lower head 12 so as to divide the accommodating cavity into an upper cavity located above the water outlet orifice plate 8 and a lower cavity located below the water outlet orifice plate 8. The water outlet orifice plate 8 The top surface is provided with several water outlet caps 3, the resin bottom outlet 7 is located in the center of the bottom surface of the lower head 12 and passes through the water outlet hole plate 8 to communicate with the upper cavity, and the resin side outlet 2 is located in the cylinder body. 11 and communicate with the upper cavity, the bottom surface of the lower head 12 is also provided with a water outlet 6 communicated with the lower cavity, the upper head is a spherical convex plate, the lower head It is a spherical concave plate, the water outlet orifice plate 8 is a spherical concave plate, a number of supporting plates 4 are vertically fixed between the lower head 12 and the water outlet orifice plate 8, and the supporting plates 4 are located at the bottom of the resin On the left and right sides of the outlet 7 and the water outlet 6, the side wall of the casing 1 and near the bottom are provided with a resin sight glass 9, and the outer wall of the casing 1 is also provided with a resin sight glass 9 to detect the accommodating cavity In the video monitor for the height of the inner anion resin falling, a number of legs 5 are arranged around the outer side of the lower end of the casing 1, and the casing 1 is made of stainless steel.

The working process of the present invention:

First, the anion resin mixed with the cation resin is input into the upper chamber through the resin inlet, and then the anion resin regenerating agent is sprayed through the rinsing device to remove the adsorbed ions and other impurities in the anion resin, and restore the original composition and performance. , the water outlet cap 3 collects the water flow, and then discharges the water flow through the water outlet 6, and the regenerated anion resin is transported to the resin mixing tank through the resin side outlet 2, waiting to be mixed with the regenerated cation resin for use. During the discharge of the anion resin, the operator can judge the output end point of the anion resin through the resin sight glass or video monitor. Since the specific gravity of the cation resin is larger than that of the anion resin, the cation resin mixed into the anion resin will remain above the water outlet orifice 8 and will not be taken out with the regenerated anion resin and sent to the resin mixing tank to ensure that The sodium cation resin that has contacted with the anion resin regenerant NaOH will not be brought into the mixed ion exchanger of the operating system, which ultimately ensures the control level of Na ⁺ ions in the effluent of the operating system. After the conveying work of the resin side outlet 2 is completed, the anion resin containing a small amount of cation resin can be sent back to the separation equipment in the ion exchange regeneration system through the resin bottom outlet 7 to be separated again, so as to ensure that the cation resin in the anion resin will not be The process of multiple separation, transportation and regeneration accumulates in the anion resin regeneration equipment.

The present invention utilizes the difference in specific gravity between anion resin and cation resin, and outputs pure anion resin separately through the resin side outlet, so that the cation resin sent into the anion resin regeneration device along with the anion resin still remains in the shell after the anion resin regeneration and output are completed. Then, it is output through the resin bottom outlet to prevent the anion resin mixed with sodium cation resin from being brought into the ion exchange equipment of the operating system, so as to avoid the Na ⁺ ions of the anion resin regenerant being brought into the sodium cation resin. In the mixed ion exchanger of the operating system, the performance is reliable and the structure is simple, and it is suitable for the condensate polishing system of nuclear power conventional island and the condensate polishing system of thermal power.

The above-mentioned embodiments are illustrative of the present invention, not limitations of the present invention, and any scheme after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (10)

1. A negative resin regeneration device is characterized in that: including casing (1), be equipped with the chamber that holds the bottom and thoughtlessly have the negative resin of positive resin in casing (1), the bottom center that holds the chamber is equipped with resin end export (7), the lateral wall that holds the chamber just is close to bottom department and is equipped with resin side export (2).

2. The apparatus for regenerating a negative resin as claimed in claim 1, wherein: the shell (1) comprises a barrel body (11), an upper sealing head and a lower sealing head (12), the upper sealing head and the lower sealing head (12) are respectively fixed at the upper end and the lower end of the barrel body (11) and form a containing cavity together with the barrel body (11), a leaching device is arranged in the upper sealing head, a resin inlet is arranged on the side wall of the barrel body (11) and close to the upper end, a water outlet pore plate (8) is fixed on the inner wall of the lower sealing head (12) so as to divide the containing cavity into an upper cavity positioned above the water outlet pore plate (8) and a lower cavity positioned below the water outlet pore plate (8), a plurality of water outlet caps (3) are arranged on the top surface of the water outlet pore plate (8), a resin bottom outlet (7) is positioned in the center of the bottom surface of the lower sealing head (12) and penetrates through the water outlet pore plate (8) to be communicated with the upper cavity, a resin side outlet (2) is positioned on the side wall of, the bottom surface of the lower end enclosure (12) is also provided with a water outlet (6) communicated with the lower cavity.

3. The negative resin regenerating device according to claim 2, wherein: the upper end enclosure is a spherical convex plate, and the lower end enclosure is a spherical concave plate.

4. The negative resin regenerating device according to claim 2, wherein: the water outlet pore plates (8) are all spherical concave plates.

5. The negative resin regenerating device according to claim 2, wherein: a plurality of supporting plates (4) are vertically fixed between the lower seal head (12) and the water outlet pore plate (8).

6. The negative resin regenerating device according to claim 5, wherein: the supporting plates (4) are positioned at the left side and the right side of the resin bottom outlet (7) and the water outlet (6).

7. The apparatus for regenerating a negative resin as claimed in claim 1, wherein: and a resin sight glass (9) is arranged on the side wall of the shell (1) and close to the bottom.

8. The apparatus for regenerating a negative resin as claimed in claim 7, wherein: the outer wall of the shell (1) is also provided with a video monitor for detecting the descending height of the female resin in the accommodating cavity through a resin sight glass (9).

9. The apparatus for regenerating a negative resin as claimed in claim 1, wherein: the outer side of the lower end of the shell (1) is provided with a plurality of supporting legs (5) in a surrounding mode.

10. The apparatus for regenerating a negative resin as claimed in claim 1, wherein: the shell (1) is made of stainless steel.

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