Low-temperature purging distillation device

Abstract

The utility model relates to a low-temperature purging distillation device which comprises a distillation assembly, the distillation assembly comprises a distiller and a condenser arranged on one side of the distiller, and the distiller is connected with the condenser through a pipeline; the low-temperature blowing and blowing assembly comprises a blowing mechanism and a blowing mechanism, the blowing mechanism is arranged in the distiller, the blowing mechanism is arranged outside the distiller, and the blowing mechanism is connected with the blowing mechanism through a compressed air pipeline. The low-temperature blowing and blowing mechanism and the distillation assembly are integrated, distillation gas generated in the distiller is blown at low temperature and blown into the condenser to be condensed and collected, and compared with a conventional heating or reduced pressure distillation mode, the phenomenon that the performance of a perfluorosulfonic acid resin film solution is unstable is avoided; the perfluorinated sulfonic acid resin film solution with stable performance can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of solution recovery and replacement, and particularly relates to a low-temperature purge distillation device. Background Art

[0002] In the prior art, due to the requirements of coating infiltration, drying, heat resistance and the properties of the polymer after drying, the perfluorosulfonic acid resin membrane solution usually needs to replace the solvent and change the solid content according to different process performance requirements. The requirements for the viscosity and particle size of the perfluorosulfonic acid resin membrane solution are extremely strict. Conventional heating or vacuum distillation will cause the membrane solution to agglomerate, resulting in larger particle size, carbonization and discoloration, and a large number of bubbles will also be generated.

[0003] Therefore, it is urgent to explore a method that can replace the solvent of the perfluorosulfonic acid resin membrane solution according to requirements without affecting the properties of the perfluorosulfonic acid resin membrane solution itself, so as to improve the performance of the perfluorosulfonic acid resin membrane solution. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a low-temperature purge distillation device, which solves the problems that in the prior art, conventional heating or vacuum distillation causes the perfluorosulfonic acid resin membrane solution to agglomerate, resulting in larger particle size, carbonization and discoloration, and a large number of bubbles will also be generated.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a low-temperature purge distillation device, comprising:

[0007] A distillation component, the distillation component includes a distiller and a condenser arranged on one side of the distiller, and the distiller is connected to the condenser through a pipeline;

[0008] A low-temperature purge and blast component, the low-temperature purge and blast component includes a purge mechanism arranged inside the distiller and a blast mechanism arranged outside the distiller, and the purge mechanism is connected to the blast mechanism through a compressed air pipeline.

[0009] Further, a plurality of purge air holes are arranged on the purge mechanism, and the purge air holes blow air in the horizontal direction facing the liquid surface and / or in the inclined upward direction facing the liquid surface.

[0010] As a preferred embodiment, the purge mechanism is arranged in a circle along the inner circumferential wall of the distiller.

[0011] As another preferred embodiment, the purge mechanism is arranged in a circle along the inner wall of the semi-circumference of the distiller.

[0012] Further, a blowing hole is provided at the end of the purging mechanism, and a gas reflection baffle is arranged opposite to the blowing hole, and the gas purged from the blowing hole is reflected by the gas reflection baffle to the obliquely upper part of the liquid surface.

[0013] Further, the gas reflection baffle includes a first baffle arranged opposite to the cross-section of the blowing hole and a second baffle arranged below the purging mechanism.

[0014] Further, a sealing lifting mechanism is arranged on the compressed air pipeline, and the sealing lifting mechanism is used to adjust the position where the compressed air pipeline penetrates into the distiller.

[0015] Further, the temperature of the gas introduced into the compressed air pipeline is 30 - 40 °C.

[0016] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0017] A low-temperature purging distillation device of the present utility model integrates a distillation component and a low-temperature purging and blowing component. The purging mechanism in the low-temperature purging and blowing component is arranged in the distiller. By continuously blowing compressed air through an external blowing mechanism, a gas source is provided to the inside of the distiller, thereby performing low-temperature blowing on the distillation gas generated in the distiller, and blowing it into the condenser for condensation and collection. Compared with the conventional heating or vacuum distillation methods that cause instability in the performance of the perfluorosulfonic acid resin membrane solution, the low-temperature blowing method adopted in the present utility model can obtain a perfluorosulfonic acid resin membrane solution with stable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 is a schematic structural diagram of a low-temperature purging distillation device provided by the present utility model;

[0020] Figure 2 is a schematic diagram of a purging mechanism provided by the present utility model;

[0021] Figure 3 is a schematic diagram of a second purging mechanism provided by the present utility model;

[0022] Figure 4 is a schematic diagram of a third purging mechanism provided by the present utility model.

[0023] Among them, the reference numeral descriptions are as follows:

[0024] 1. Distillation assembly; 101. Distiller; 102. Condenser; 2. Low-temperature purging and blowing assembly; 201. Purging mechanism; 202. Compressed air pipeline; 203. Purging air holes; 204. Gas reflection baffle; 205. Sealing lifting mechanism. Detailed implementation manner

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Refer to Figure 1 , the low-temperature purging distillation device includes a distillation assembly 1 and a low-temperature purging and blowing assembly 2.

[0027] The distillation assembly 1 includes a distiller 101 and a condenser 102. Among them, the distiller 101 is used to hold the perfluorosulfonic acid resin membrane solution and evaporate the internally placed perfluorosulfonic acid resin membrane solution at room temperature to generate steam. There is no limitation on the shape of the distiller 101 in the present utility model as long as it can accommodate the aforementioned perfluorosulfonic acid resin membrane solution. Specifically, in this embodiment, the lower part of the distiller 101 is a cylindrical tank body, and the top is a semi-spherical appliance cap, and the two are integrally formed with good airtightness.

[0028] The condenser 102 is arranged on one side of the distiller 101 and is connected to the distiller 101 through a pipeline. The condenser 102 is used to further condense the steam generated in the aforementioned distiller 101 into a liquid and collect it into a collection bottle connected below the condenser 102. A condensing tube is arranged inside the condenser 102. For the condensing tube, one of a straight condensing tube, a spherical condensing tube, and a snake-shaped condensing tube can be selected. And the water inlet setting of the condensing tube ensures the principle of "entering from the bottom and exiting from the top", thereby increasing the cooling stroke of water cooling, improving the cooling effect, and accelerating the steam condensation rate.

[0029] In the present utility model, the low-temperature purging and blowing assembly 2 includes a purging mechanism 201 arranged inside the distiller 101 and a blowing mechanism (not shown in the figure) connected to the purging mechanism 201 through a compressed air pipeline 202 outside the distiller 101.

[0030] The air blowing mechanism supplies a compressed air source to the purging mechanism 201 through a compressed air pipeline 202, and then the purging mechanism 201 purges the air source to the liquid level inside the distiller 101. At the same time, combined with continuous stirring of the perfluorosulfonic acid resin membrane solution in the distiller 101, the steam distilled from the perfluorosulfonic acid resin membrane solution is blown above the liquid level until the steam is concentrated and blown into the condenser 102 for condensation and liquid collection.

[0031] In the present utility model, low temperature is used to blow the membrane solution inside the distiller 101 to avoid the change of the molecular structure inside the membrane solution caused by conventional heating or vacuum distillation, thereby reducing the performance of the membrane solution. Therefore, in order to obtain a membrane solution with stable performance, the temperature of the compressed air introduced in this embodiment is preferably 30-40 °C, more preferably 35 °C.

[0032] In addition, there are various setting methods for the purging mechanism 201 in the present utility model.

[0033] Refer to Figure 2 , preferably, the purging mechanism 201 can be arranged along the inner circumferential wall of the distiller 101, and a number of purging air holes 203 are provided on the purging mechanism 201. The positions of the air holes are arranged to meet the horizontal direction of the liquid level and the inclined upward direction of the liquid level, so as to blow air in the horizontal direction of the liquid level and the inclined upward direction of the liquid level. The above-mentioned layout of the air hole positions is to avoid bubble accumulation and liquid splashing on the liquid level caused by the blowing operation, which affects the distillation effect.

[0034] Refer to Figure 3 , as another preferred embodiment, the operator can also, according to actual needs, arrange the purging mechanism 201 only along the inner wall of the semi-circumference of the distiller 101.

[0035] Refer to Figure 4 , in addition to the above setting method, in the present utility model, as another preferred embodiment, a purging air hole 203 can be opened only at the end of the purging mechanism 201, and a gas reflection baffle 204 is arranged on the opposite side of the cross-section of the air hole. The gas flowing out horizontally through the purging air hole 203 abuts against the gas reflection baffle 204, and then the air flow is reflected by the gas reflection baffle 204 to the upper part of the liquid level obliquely.

[0036] Moreover, in order to enable the air flow to be effectively and fully reflected to the upper part of the liquid level obliquely, in the present utility model, the arranged gas reflection baffle 204 is set into two parts. One part is the first baffle opposite to the cross-section of the purging air hole 203, and the other part is the second baffle arranged below the purging mechanism 201, thus forming an L-shaped baffle. The setting of the second baffle blocks the path of the air flow reflecting downward to the liquid level, so that the air flow can only be reflected to the upper part of the liquid level obliquely, thereby avoiding the situation of bubble generation and liquid splashing on the liquid level caused by the impact of the air flow.

[0037] In this embodiment, a sealing lifting mechanism 205 is further provided on the compressed air pipeline 202. The position of the pipeline extending into the distiller 101 is adjusted by a lifting device to match the liquid level height in the distiller 101, so as to perform solvent purging distillation more efficiently. The sealing lifting mechanism 205 used in the present utility model is the same as the sealing device in the "Air Filtering and Purifying Device" with the patent publication number CN205137713U and the patent name.

[0038] In summary, the setting of the low-temperature purging distillation device in the present utility model blows compressed air at low temperature into the distiller, so that sufficient air flow is generated on the surface of the solution in the distiller to carry away the solvent vapor on the surface, and at the same time, no crusting and bubbling occur, ensuring the stable performance of the solution.

[0039] The above embodiments are only used to illustrate the technical concept and features of the present utility model. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly. It should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A low temperature purge distillation apparatus, characterized in that: include: A distillation assembly (1), the distillation assembly (1) comprising a distiller (101) and a condenser (102) arranged on one side of the distiller (101), the distiller (101) and the condenser (102) being connected via a pipeline; A low-temperature purge and air blowing assembly (2), the low-temperature purge and air blowing assembly (2) comprising a purge mechanism (201) arranged inside the distiller (101) and an air blowing mechanism arranged outside the distiller (101), the purge mechanism (201) and the air blowing mechanism being connected via a compressed air pipeline (202); The purge mechanism (201) is provided with a plurality of purge air holes (203), and the purge air holes (203) blow air in a horizontal direction facing the liquid surface and / or in an inclined upward direction facing the liquid surface.

2. A low temperature purge distillation device according to claim 1, characterized in that: The purge mechanism (201) is arranged along the inner circumferential wall of the distiller (101).

3. A low temperature purge distillation device according to claim 1, characterized in that: The purge mechanism (201) is arranged along a semicircular inner wall of the distiller (101).

4. A low temperature purge distillation device according to claim 1, characterized in that: A purge air hole (203) is provided at the end of the purge mechanism (201), and a gas reflection baffle (204) is provided on the opposite side of the purge air hole (203). The gas purged from the purge air hole (203) is reflected to an oblique position above the liquid surface by the gas reflection baffle (204).

5. A low temperature purge distillation device according to claim 4, characterized in that: The gas reflection baffle (204) comprises a first baffle arranged on the opposite side of the cross section of the purge gas hole (203) and a second baffle arranged below the purge mechanism (201).

6. A low temperature purge distillation device according to claim 1, characterized in that: The compressed air pipeline (202) is provided with a sealing lifting mechanism (205), and the sealing lifting mechanism is used to adjust the position of the compressed air pipeline (202) penetrating into the distiller (101).

7. A low temperature purge distillation device according to claim 1, characterized in that: The temperature of the gas introduced into the compressed air pipeline (202) is 30-40°C.

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