Ion exchange resin regenerating apparatus

Abstract

The application discloses a kind of inner cone outer circle's ion exchange resin regeneration equipment, including barrel, water cap and water outlet plate, the bottom of barrel is equipped with arc bottom plate, the inner bottom of barrel is equipped with the water outlet plate of inverted cone, the water outlet plate is above the arc bottom plate, several water caps are distributed on the water outlet plate, the water cap is located on the side of the water outlet plate away from arc bottom plate, the lowest of the water outlet plate is equipped with positive resin bottom outlet, the positive resin bottom outlet is penetrated to the outside of the arc bottom plate.The application is improved by the traditional resin separation equipment, avoid the phenomenon of " vortex pot bottom " that the negative resin in mixed resin layer is brought into positive resin regeneration equipment, so as to avoid the Cl ‑ (or SO4 2‑ ) ion of positive resin regenerant is brought into running system, compared with prior art, reduce mixed resin separation difficulty, improve mixed resin separation rate, reliability is high, simple structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear power plant conventional island condensate polishing system and thermal power plant condensate polishing system, in particular to the technical field of ion resin separation and regeneration equipment. BACKGROUND

[0002] In the nuclear power plant or thermal power plant condensate polishing system, the resin in the mixed ion exchanger of the running system will be sent to the ion resin separation and regeneration equipment in the ion exchange regeneration system for separation after failure, and will be regenerated respectively after separation. In the national and relevant industry standards, the volume ratio of the negative resin in the positive resin after separation is allowed to be <0.1%, and the volume ratio of the positive resin in the negative resin is allowed to be <0.07%.

[0003] Generally, the negative resin after separation will be sent to the negative resin regeneration equipment for regeneration, the positive resin will be sent to the positive resin regeneration equipment for regeneration, and a certain height of mixed resin layer of the negative and positive resins will be left in the ion resin separation and regeneration equipment to ensure the realization of the above separation rate.

[0004] The conventional ion resin separation and regeneration equipment sets the bottom plate supporting and outputting the positive resin as a flat plate or an elliptical curve dome plate, and uses water power to push the resin layer to move downward, so that the resin layer can uniformly descend in a planar form. However, due to the fact that the direction and flow of the water flow conveying the resin cannot be accurately controlled in practice, the ion resin separation and regeneration equipment has the actual situation that the resin conveying water has a fast middle flow speed and a slow edge flow speed, the resin layer will form a "vortex pot bottom" in the form of a cone with a certain angle, and the negative resin in the mixed resin layer will penetrate the mixed resin layer and be conveyed to the positive resin regeneration equipment before the positive resin is completely transported, so that the positive resin in the positive resin regeneration equipment is mixed with more negative resin.

[0005] Generally, the existence of the negative resin in the positive resin will cause the positive resin regeneration agent HCl (or H2SO4) to contact the negative resin, causing the Cl - (or SO4 2- ) ion to be exchanged by the OH - ion in the negative resin, so that the Cl - (or SO4 2- ) ion from the positive resin regeneration agent is brought into the mixed ion exchanger of the running system, and finally causes the difficulty in controlling the Cl - (or SO4 2- ) ion level in the running system. SUMMARY

[0006] The present application aims at solving the problems in the prior art and providing a new ion exchange resin regeneration device with inner cone and outer circle. - (or SO4 2- ) ions from the cation resin regenerant are brought into the effluent.

[0007] To achieve the above-mentioned object, the present application provides an ion exchange resin regeneration device with inner cone and outer circle, comprising a barrel, a water cap and an effluent plate, the bottom of the barrel is provided with an arc-shaped bottom plate, the inner bottom of the barrel is provided with an effluent plate in the shape of an inverted cone, the effluent plate is above the arc-shaped bottom plate, a plurality of water caps are distributed on the effluent plate, the water caps are on the side of the effluent plate away from the arc-shaped bottom plate, the lowest part of the effluent plate is provided with a cation resin bottom outlet, and the cation resin bottom outlet penetrates to the outside of the arc-shaped bottom plate.

[0008] Preferably, the axis of the effluent plate and the arc-shaped bottom plate is on the same line.

[0009] Preferably, the arc-shaped bottom plate is provided with an effluent port.

[0010] Preferably, the arc-shaped bottom plate is provided with a plurality of legs.

[0011] Preferably, the sidewall of the barrel is provided with a sight glass.

[0012] Preferably, a reinforcing support device is arranged between the effluent plate and the arc-shaped bottom plate.

[0013] Preferably, the cone angle of the effluent plate is determined according to the angle at which the vortex-shaped pot bottom is generated based on the specific water flow rate or the angle based on experience, and the cone angle of the effluent plate is the same as or close to the angle of the vortex-shaped pot bottom.

[0014] Preferably, the ion exchange resin regeneration device can use a spherical concave plate of various diameters and an elliptical concave plate of various diameters as the arc-shaped bottom plate, but is not limited thereto.

[0015] Preferably, the ion exchange resin regeneration device can use carbon steel lined with rubber and various grades of stainless steel materials, but is not limited thereto.

[0016] The present application has the following beneficial effects: through the improvement of the traditional resin separation device, the present application avoids the phenomenon that the anion resin in the mixed resin layer is brought into the cation resin regeneration device due to the vortex-shaped pot bottom, thereby avoiding the Cl - (or SO4 2- ) ions from the cation resin regenerant being brought into the running system, reducing the difficulty of separating the mixed resin, improving the separation rate of the mixed resin, and having high reliability and simple structure compared with the prior art.

[0017] The features and advantages of the present application will be illustrated in detail by examples in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the present application.

[0019] In the figure: 1-cylinder body, 2-water cap, 3-water outlet plate, 4-strengthening support device, 5-leg, 6-water outlet, 7-positive resin bottom outlet, 8-sight glass. DETAILED DESCRIPTION

[0020] A kind of ion exchange resin regeneration equipment of inner cone outer circle, including cylinder body 1, water cap 2 and water outlet plate 3, the bottom of cylinder body 1 is equipped with arc bottom plate, the inner bottom of the cylinder body 1 is equipped with the water outlet plate 3 in the shape of inverted cone, the water outlet plate 3 is above the arc bottom plate, the water outlet plate 3 is distributed with several water caps 2, the water cap 2 is located at the side of the water outlet plate 3 away from arc bottom plate, the lowest of the water outlet plate 3 is equipped with positive resin bottom outlet 7, the positive resin bottom outlet 7 penetrates to the outside of the arc bottom plate, the axis of the water outlet plate 3 and arc bottom plate is located on the same straight line, the arc bottom plate is equipped with water outlet 6, the arc bottom plate is equipped with several legs 5, the sidewall of the cylinder body 1 is equipped with sight glass 8, strengthening support device 4 is equipped between the water outlet plate 3 and arc bottom plate, the conical angle α is according to the angle of " vortex pot bottom " generated according to specific water flow rate or the angle based on experience value, the conical angle α of the water outlet plate 3 is 134 degrees.

[0021] In the working process, according to the program, the positive resin is output to the positive resin regeneration tower through the positive resin bottom outlet 7, and the operator or / and the related instrument judges the positive resin output terminal point through the sight glass 8. The inverted conical angle α of the inverted conical water outlet plate 3 is the same as or close to the angle of " vortex pot bottom ", so that before the positive resin output terminal point, the negative resin on the upper part of the mixed resin layer will not penetrate the mixed resin layer, avoiding that more negative resin is mixed in the output positive resin. Compared with the prior art, the present application has high reliability and simple structure.

[0022] The above examples are illustrative of the present application and are not limiting, any simple transformation of the present application belongs to the protection scope of the present application.

Claims

1. An ion exchange resin regeneration device with an inner cone and an outer circle, characterized in that: The device includes a cylinder body (1), water caps (2), and a water outlet plate (3). The bottom of the cylinder body (1) is provided with an arc-shaped bottom plate. The inner bottom of the cylinder body (1) is provided with a water outlet plate (3) in the shape of an inverted cone. The water outlet plate (3) is located above the arc-shaped bottom plate. Several water caps (2) are distributed on the water outlet plate (3). The water caps (2) are located on the side of the water outlet plate (3) away from the arc-shaped bottom plate. The lowest point of the water outlet plate (3) is provided with a cation resin bottom outlet (7). The cation resin bottom outlet (7) extends through to the outside of the arc-shaped bottom plate. The axis of the water outlet plate (3) and the arc-shaped bottom plate are on the same straight line. The cone angle α is consistent with the angle of the generated "vortex bottom"; the cone angle α of the water outlet plate (3) is 100-150 degrees.

2. The ion exchange resin regeneration device with an inner cone and outer circle as described in claim 1, characterized in that: The arc-shaped bottom plate is provided with a water outlet (6).

3. The ion exchange resin regeneration device with an inner cone and outer circle as described in claim 1, characterized in that: The curved base plate is provided with several legs (5).

4. The ion exchange resin regeneration device with an inner cone and outer circle as described in claim 1, characterized in that: A sight glass (8) is provided on the side wall of the cylinder (1).

5. The ion exchange resin regeneration device with an inner cone and outer circle as described in claim 1, characterized in that: A reinforcing support device (4) is provided between the water outlet plate (3) and the arc-shaped bottom plate.

6. The ion exchange resin regeneration device with an inner cone and outer circle as described in claim 1, characterized in that: The arc-shaped base plate is a spherical concave plate or an elliptical concave plate.

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