CN218290655U - A solid-liquid separation device for radioactive organic degradation materials - Google Patents

Abstract

The utility model relates to a solid-liquid separation device for radioactive organic degradation materials. The solid-liquid separation device for radioactive organic degradation materials includes a sealing cover and a cylinder; Sealing and fixing; the sealing cover and the cylinder body are connected through an electronically controlled rocker arm assembly; the cylinder body is provided with a cloth bag filter bag; the cylinder body is provided with a material inlet higher than the cloth bag filter bag; A liquid phase outlet is provided at the bottom of the cylinder. The solid-liquid separation device for radioactive organic degradation materials provided by the utility model realizes the automation of bag-type filtration for radioactive waste treatment, avoids manual opening, greatly reduces the contact time of operators, and reduces the radioactive exposure of operators dose. At the same time, the mouth of the filter bag does not need to be strictly sealed, which greatly reduces the difficulty of installation and disassembly of the filter bag, and the installation or removal of the filter bag can be completed in a very short time.

Description

A solid-liquid separation device for radioactive organic degradation materials

technical field

The utility model relates to the field of nuclear industry, in particular to a solid-liquid separation device for radioactive organic degradation materials.

Background technique

At present, during the operation and maintenance of nuclear power plant units, it is necessary to chemically clean and decontaminate radioactively contaminated components or equipment (such as impellers, valve discs, pipe fittings, etc.) to remove attached corrosion products and nuclides, which will produce certain amount of radioactive waste water. This type of radioactive wastewater has complex components and generally contains cleaning agents, oxalic acid, citric acid, inorganic acids, inorganic alkalis, potassium permanganate, mechanical impurities, and radionuclides (the chemical composition of different cleaning programs will vary). Organic cleaning agents, oxalic acid, citric acid, etc. in radioactive wastewater are organic substances, and their organic content is relatively high. The radioactive waste water needs to be treated and meets the discharge standard before it can be monitored and discharged. In order to remove radionuclides in wastewater, adsorption, filtration, ion exchange or reverse osmosis membrane technologies are generally used for treatment.

As CN113782244A discloses a kind of nuclide-containing wastewater treatment process based on ion exchange method, the treatment process includes the following steps: Step 1: Drain the laboratory wastewater containing low radioactive nuclide and radiation to the inside of the neutralization adjustment device, And add the corresponding pH regulator inside the neutralization adjustment device for neutralization; Step 3: Receive the laboratory wastewater transmitted by the nuclide pump through the precision filter, and remove the particulate impurities in the wastewater; Step 6: Pass the nuclear grade adsorption bed In this way, the remaining ions in the product water of the pre-treatment equipment are further removed to achieve the removal rate required by the process. This process is based on the ion exchange method of nuclide-containing wastewater treatment process, which can reduce the total height of each ion exchange device, is not easy to cause leakage, and reduces maintenance workload. It can automatically adjust the frequency of the water supply pump according to the program requirements, and perform voltage stabilization and frequency conversion. For water supply, add a third-stage nickel-potassium ferrocyanide exchange column, which can remove the Cs ions that were not removed by the first two stages.

CN112951470A discloses a treatment method for waste liquid containing organic matter and radionuclides. It includes: 1) Pretreatment of the waste liquid to be treated, including adjusting the pH of the waste liquid and filtering. Control the waste liquid to be treated without solid impurities or organic flocs; 2) Pass the treated waste liquid into a device equipped with activated carbon adsorbent, or directly add activated carbon to the waste liquid to be treated for stirring and adsorption ; 3) Pass the waste liquid after activated carbon treatment to remove organic matter into the device equipped with silica gel adsorbent again, or directly add activated carbon to the waste liquid to be treated for stirring and adsorption; wherein, it can be selected according to the result after treatment After two or more stages of adsorption devices; the organic content and uranium and/or thorium content of the treated wastewater meet the discharge standards. After being treated by this method, the content of organic matter is reduced to the first-class discharge standard, and the concentration of uranium/thorium can be reduced to 50ug/L.

CN107068228A discloses a nuclear power plant low-radioactive process wastewater advanced treatment device and its treatment method. The nuclear power plant low-radioactive process wastewater advanced treatment device includes a primary filter device connected in sequence, a heavy metal scavenger dosing system, and a special flocculant dosing system. systems, depth filtration units, ion exchange systems and boron removal systems. This method proposes an advanced treatment process of heavy metal capture + flocculation + ion exchange + boron removal resin, which can effectively remove colloidal and partial colloidal nuclides in water, avoid the fouling phenomenon of ion exchange resins, and improve the use efficiency of ion exchange resins and service life, and can deeply remove boron in wastewater, effectively limiting the content of boron in discharged water to less than 0.5mg/L.

However, this kind of radioactive wastewater is treated by the technical means of coagulation and filtration after oxidizing organic matter. After this pretreatment process, most of the organic matter in the wastewater is oxidized and degraded, and the colloidal radionuclides in the waste liquid are also accompanied by flocs. It precipitates together and can be removed by filtration, but the current filtration device still has problems such as complex structure of separation equipment, low degree of automation, and poor filtration effect.

Utility model content

In view of the problems existing in the prior art, the purpose of this utility model is to provide a solid-liquid separation device for radioactive organic degradation materials to solve the problems in the prior art in the process of solid-liquid separation of radioactive organic degradation materials. Low degree of automation, poor filtering effect and other issues.

For this purpose, the utility model adopts the following technical solutions:

The utility model provides a solid-liquid separation device for radioactive organic degradation materials. The solid-liquid separation device for radioactive organic degradation materials includes a sealing cover and a cylinder body;

Sealing and fixing between the sealing cover and the cylinder body is carried out through an inflatable seal and a gusset plate;

The sealing cover and the barrel are connected through an electronically controlled rocker arm assembly;

The cylinder is provided with a cloth bag filter bag;

A material inlet is provided in the cylinder higher than the cloth bag filter bag;

A liquid phase outlet is provided at the bottom of the cylinder.

The solid-liquid separation device for radioactive organic degradation materials provided by the utility model adopts the design structure of electric control rocker driven by motor and air-filled seal, which realizes the automation of bag-type filtration for radioactive waste liquid treatment, avoids manual opening of the cover, and is very convenient. It greatly reduces the contact time of the operator, reduces the radiation exposure dose, and reduces the dose rate of the operator. At the same time, the liquid inlet extends into the filter bag, and the liquid can fall directly into the filter bag. The filter bag mouth does not need to be strictly sealed, which greatly reduces the difficulty of installing and disassembling the filter bag, and can complete the installation of the filter bag in a very short time. or propose. The whole device has a compact structure and is easy to operate, and the filtrate can be effectively filtered by adjusting the mesh number of the filter bag.

In the utility model, the buckle plate is distributed on the half of the upper edge of the cylinder and the other half of the top cover, and can be symmetrically distributed in semicircles, so as to ensure that the sealing cover and the cylinder can be locked after the inflatable seal is inflated. The number can be set to one or more according to the needs, and can be distributed at equal intervals, or can be set and distributed according to the required distance.

In the utility model, the top sealing cover is suspended above the cylinder body by the electronically controlled rocker assembly, and there are several gussets in the semicircle (180 degree azimuth angle) of the lower edge of the sealing cover, which can effectively grasp the upper edge of the cylinder body. The upper edge of the cylinder body is turned outward, and the other semicircle corresponding to the top sealing cover also has several gussets, which can effectively grasp the half of the top sealing cover.

In the utility model, the inflatable seal can be arranged by setting a groove at the mouth of the sealing cover or cylinder, or can be fixed by buckle or other means, and the inflatable seal used is made of rubber or other flexible materials with airtightness , arranged in a hollow space between the cylinder body and the top sealing cover, and connected to the external compressed air pipeline. After inflated, it can tighten the top sealing cover and the cylinder body to form a seal; after deflation, there is a certain gap between the top sealing cover and the cylinder body , the sealing cover can move freely, and can be rotated 90°outwardly driven by the rotating motor.

As a preferred technical solution of the utility model, the opening edge of the cylinder body is turned out to correspond to the edge of the sealing cover.

As a preferred technical solution of the present invention, the buckle plate is arranged on the edge of the opening of the bucket body and/or the edge of the sealing cover.

As a preferred technical solution of the utility model, the electronically controlled rocker assembly includes a support rod and a boom;

In the utility model, the supporting rod and the suspension rod are arranged in an L shape, which can be integrally formed, or can be obtained after being connected by a connecting piece.

The rotation angle of the electronically controlled rocker arm assembly is >90°.

As a preferred technical solution of the present invention, the support rod is arranged on the side of the cylinder, and the bottom of the support rod is provided with a rotating motor;

The suspension rod is connected with the sealing cover.

As a preferred technical solution of the present invention, the inside of the cylinder is arranged in an inner container.

As a preferred technical solution of the utility model, the inner container is a porous inner container.

In the utility model, the material of the inner container can be a metal material, such as a stainless steel inner container, an aluminum alloy inner container, a titanium inner container, a titanium alloy inner container, a copper alloy inner container, and the like. The aperture of porous liner can be selected according to actual needs, as in the utility model, the hole diameter of porous liner can be 6-7mm, for example can be 6mm, 6.2mm, 6.4mm, 6.6mm, 6.8mm or 7mm etc., But not limited to the listed values, other unlisted values within this range are also applicable.

As a preferred technical solution of the present invention, the cloth bag filter bag is arranged in the inner container. The inner liner can be used as the external support of the filter bag and at the same time form the filter channel.

In the utility model, the cloth bag filter bag is made of PE or other materials with certain passability, hung on the inner wall of the cylinder, and can be easily lifted from the inside of the filter cylinder through the handle. filter.

In the utility model, the filter hole diameter of the cloth bag filter bag can be selected according to actual needs, such as 150-300 mesh, and the filter hole can directly be a single mesh number within a limited range, such as a uniform filter hole diameter of 150 Mesh, 180 mesh, 200 mesh, 220 mesh, 240 mesh, 260 mesh, 280 mesh or 300 mesh, etc., can also be a collection of mesh and pore diameters within a certain range, such as filter holes with a diameter of 150-200 mesh Collection, such as the collection of filter holes in the range of 180-250 mesh, such as the collection of filter holes in the range of 150-180 mesh, such as the collection of filter holes in the range of 200-250 mesh, For example, filter hole collection with a filter hole diameter in the range of 220-300 mesh.

As a preferred technical solution of the utility model, the bottom of the cylinder is further provided with a support. The lower part of the cylinder has a support, which can be effectively supported on the ground.

As a preferred technical solution of the utility model, the inflatable sealing member is connected with an inflatable device.

In the utility model, a tool hook placement box can also be provided outside the cylinder, and a built-in long-handled tool is used for hanging and proposing the filter bag.

Compared with the prior art solutions, the utility model has the following beneficial effects:

The solid-liquid separation device provided by the utility model realizes the high-efficiency treatment of radioactive waste liquid by adopting the design concept of automation, which greatly reduces the contact time of operators, reduces the dose of radioactive exposure, and reduces the dose rate of operators. At the same time, the pre-sealing of the device is adopted, so that the filter bag mouth does not need to be strictly sealed, which greatly reduces the difficulty of installation and disassembly of the filter bag, and the installation or removal of the filter bag can be completed in a very short time. The whole device has a compact structure and is easy to operate, and the filtrate can be effectively filtered by adjusting the mesh number of the filter bag.

Description of drawings

Fig. 1 is the schematic diagram of the solid-liquid separation device of the radioactive organic degradation material provided by the utility model embodiment 1;

Fig. 2 is a cross-sectional view of the solid-liquid separation device for radioactive organic degradation materials provided in Example 1 of the present utility model.

In the figure: 1-sealing cover, 1.1-gusset plate, 2-cylinder body, 2.1-inflatable seal, 2.2-material inlet, 2.3-inner tank, 2.4-liquid phase outlet, 3.1-suspension rod, 3.2-support rod, 3.3 - Rotating motor, 4 - Support.

Below the utility model is described in further detail. But the following examples are only simple examples of the utility model, and do not represent or limit the protection scope of the utility model, and the protection scope of the utility model shall be determined by the claims.

detailed description

In order to better illustrate the utility model and facilitate understanding of the technical solution of the utility model, the typical but non-limiting examples of the utility model are as follows:

Example 1

This embodiment provides a solid-liquid separation device for radioactive organic degradation materials, as shown in Figure 1 and Figure 2, the solid-liquid separation device for radioactive organic degradation materials includes a sealing cover 1 and a cylinder 2;

The sealing cover 1 and the cylinder body 2 are sealed and fixed by the inflatable sealing member 2.1 and the pinch plate 1.1; the opening edge of the cylinder body 2 is an everted edge corresponding to the edge of the sealing cover 1; the buckle The plate 1.1 is arranged on the opening edge of the barrel or the edge of the sealing cover 1; the inflatable seal 2.1 is connected with an inflatable device;

In this embodiment, the inflatable seal 2.1 is arranged by setting a groove at the mouth of the cylinder 2. The inflatable seal 2.1 used is made of rubber or other flexible materials with sealing properties, and is hollowly arranged between the cylinder 2 and the top sealing cover. The middle of 1 is connected to the external compressed air pipeline. After inflation, it can tighten the top sealing cover 1 and the cylinder body 2 to form a seal; after deflation, there is a certain gap between the top sealing cover 1 and the cylinder body 2, and the sealing cover 1 can It can move freely and can be rotated outward by more than 90° driven by the rotating motor 3.3.

The sealing cover 1 and the cylinder body 2 are connected through an electric control rocker assembly; the electric control rocker assembly includes a support rod 3.2 and a suspension rod 3.1; the rotation angle of the electric control rocker assembly > 90°, the rotation angle of the components of the electronically controlled rocker arm in this embodiment is 120°; the support rod 3.2 is arranged on the side of the cylinder 2, and the bottom of the support rod 3.2 is provided with a rotating motor 3.3; the boom 3.1 is connected with the sealing cover 1; the support rod 3.2 is fixedly connected through the fixed structure provided on the side wall of the cylinder body 2.

In this embodiment, the top sealing cover 1 is suspended above the cylinder body 2 by the suspension rod 3.1 of the electric control rocker arm assembly, and the sealing cover 1 and the suspension rod 3.1 can be connected and fixed by fixing parts, such as bolts, rivets, etc. Carry out fixed connection, concrete selection is bolt, and sealing cover 1 lower edge semicircle (180 degree azimuth angle) has several gussets 1.1, can effectively grasp cylinder body 2 upper mouth outer edge. The upper edge of the cylinder body 2 is flanged, and the other semicircle corresponding to the top sealing cover 1 also has 6 gussets 1.1 at equal intervals, which can effectively grasp the half of the top sealing cover 1.

The cylinder body 2 is provided with a cloth bag filter bag, the interior of the cylinder body 2 is arranged in an inner container 2.3, the cloth bag filter bag is arranged in the inner container 2.3, and the inner container 2.3 is a porous inner container 2.3;

In this embodiment, the material of the inner tank 2.3 can be a metal material, such as a stainless steel inner tank 2.3, an aluminum alloy inner tank 2.3, a titanium inner tank 2.3, a titanium alloy inner tank 2.3, a copper alloy inner tank 2.3, etc., What select for use in the present embodiment is stainless steel liner 2.3. The aperture of porous liner 2.3 can be selected according to actual needs, as in the embodiment, the hole diameter of porous liner 2.3 can be 6mm;

In this embodiment, the cloth bag filter bag used is made of PE or other materials with certain passability, hung on the inner wall of the cylinder 2, and can be easily lifted from the inside of the filter cartridge through the handle, and the filter bag has a certain mesh number to realize fluid flow In the present embodiment, the filter hole diameter of the filter bag is 150-200 mesh.

A material inlet 2.2 is provided in the cylinder body 2 higher than the cloth bag filter bag;

The bottom of the cylinder 2 is provided with a liquid phase outlet 2.4.

The bottom of the cylinder 2 is also provided with a support 4 . It is used to fix and support the filter device on the ground to realize the placement of the filter device.

The specific use process is as follows:

First, 1.5m ³ of radioactive nuclear waste water (containing cleaning agent, oxalic acid, citric acid, inorganic acid, inorganic alkali, potassium permanganate, mechanical impurities and radionuclides) is oxidized (the oxidant can be hydrogen peroxide, and the mass concentration is 30 %, the addition amount is 50L) and coagulation treatment (the coagulant can be ferrous sulfide, and the mass concentration is 20%, and the addition amount is 30L), after the waste water (COD content in the waste water is 5000mg/L) degradation The organic matter is flocculated and settled, and then the filter device of the utility model is used to filter and separate to obtain a liquid phase and a solid phase, and the liquid phase obtained after treatment can be directly used in fine treatment technologies such as ion exchange.

It can be seen from the above examples that the solid-liquid separation device for radioactive organic degradation materials provided by the utility model adopts an electronically controlled rocker arm driven by a motor and an air-filled and sealed design structure, which realizes the automation of bag-type filtration for radioactive waste treatment, avoiding Manual opening of the cover is avoided, which greatly reduces the contact time of the operator, reduces the radiation exposure dose, and reduces the dose rate of the operator. At the same time, the liquid inlet extends into the filter bag, and the liquid can fall directly into the filter bag. The filter bag mouth does not need to be strictly sealed, which greatly reduces the difficulty of installing and disassembling the filter bag, and can complete the installation of the filter bag in a very short time. or propose. The whole device has a compact structure and is easy to operate, and the filtrate can be effectively filtered by adjusting the mesh number of the filter bag.

It is stated that the utility model illustrates the detailed structural features of the present utility model through the above-mentioned embodiments, but the utility model is not limited to the above-mentioned detailed structural features, that is, it does not mean that the utility model must rely on the above-mentioned detailed structural features to be implemented. Those skilled in the art should understand that any improvement of the utility model, the equivalent replacement of the selected components of the utility model, the addition of auxiliary components, the selection of specific methods, etc., all fall within the scope of protection and disclosure of the utility model within.

The preferred embodiment of the utility model has been described in detail above, but the utility model is not limited to the specific details in the above embodiment, and within the scope of the technical concept of the utility model, various simple modifications can be made to the technical solution of the utility model , these simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (10)

1. The solid-liquid separation device for the radioactive organic degradation material is characterized by comprising a sealing cover and a barrel;

the sealing cover and the cylinder body are sealed and fixed through an inflatable sealing element and a pinch plate;

the sealing cover is connected with the cylinder through an electric control rocker arm component;

the barrel is provided with a cloth bag filter bag;

a material inlet is arranged in the cylinder body higher than the cloth bag filter bag;

and a liquid phase outlet is formed in the bottom of the cylinder body.

2. The solid-liquid separator for radioactive organic degraded material according to claim 1, wherein the opening edge of said cylinder is an everted edge disposed to correspond to the edge of said sealing cover.

3. The solid-liquid separator for radioactive organic degraded material according to claim 2, wherein said buckle is provided at the edge of the opening of said cylinder and/or the edge of the sealing cover.

4. The apparatus for solid-liquid separation of radioactive organic degradation material according to claim 1, wherein said electrically controlled rocker arm assembly comprises a support rod and a suspension rod;

the rotation angle of the electric control rocker arm assembly is more than 90 degrees.

5. The solid-liquid separation device for radioactive organic degraded materials according to claim 4, wherein the support rod is disposed at the side of the cylinder, and a rotating motor is disposed at the bottom of the support rod;

the hanger rod is connected with the sealing cover.

6. The solid-liquid separator for radioactive organic degraded materials according to claim 1 or 5, wherein said cylinder is internally provided with an inner container.

7. The solid-liquid separator for radioactive organic degraded materials according to claim 6, wherein said inner container is a porous inner container.

8. The solid-liquid separator for radioactive organic degraded materials according to claim 6, wherein said cloth bag filter bag is disposed in said inner container.

9. The solid-liquid separator for radioactive organic degraded material according to claim 1 or 8, wherein a support member is further provided at the bottom of said cylindrical body.

10. The solid-liquid separator for radioactive organic degraded material according to claim 9, wherein said inflatable sealing member is connected with an inflating device.

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