Acid adding device of flat pressing type electrolytic fluorine preparation acid adding equipment

Abstract

The utility model provides an acid adding device of flat pressing type electrolytic fluorine preparation acid adding equipment, which comprises a steel cylinder, a gas conveying pipe, an electrolytic bath, a gas supplementing pipe and a gas supplementing tank, in the material preparation process, gas preset in the gas supplementing tank is introduced into the gas supplementing pipe through the gas supplementing pipe, and electrolyte is prevented from being sucked back into a pipeline to be solidified in the cooling process. In addition, in the process that dredging is needed in the gas conveying pipe, gas is introduced into the gas supplementing pipe through the gas supplementing tank for dredging treatment, the gas is subjected to pressure balance and dredging treatment, the cost increased by balance pressure of the gas conveying pipe and pipeline dredging in the equipment is greatly reduced, and the working stability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorine production equipment, in particular to an acid adding device for flat-pressure electrolytic fluorine production acid adding equipment. Background Art

[0002] At present, the method used to supplement the hydrogen fluoride consumed by electrolysis in the production of fluorine by medium-temperature electrolysis is as follows: during the electrolysis process, the liquid anhydrous hydrogen fluoride in the cylinder is heated into gas by steam in a water bath and sent to the medium-temperature electrolytic cell by pipeline. The electrolytic acid-adding system for fluorine production consists of a water heating jacket, a hydrogen fluoride cylinder, an acid-adding pipeline, and a bubbling tube. The bubbling tube extends into the bottom of the electrolytic cell. The hydrogen fluoride gas is added to the bottom of the electrolytic cell through the acid-adding pipeline and the bubbling tube to mix with the electrolyte for reaction. During the acid-adding process, the hydrogen fluoride cylinder and the acid-adding pipeline must have a certain pressure to add hydrogen fluoride to the electrolytic cell. The pressure is generated by the vaporization of liquid hydrogen fluoride in the hydrogen fluoride cylinder. The liquefaction temperature of hydrogen fluoride is 19.4℃. When the acid addition is stopped and the outlet valve of the hydrogen fluoride cylinder is closed, the residual hydrogen fluoride gas in the acid addition pipeline will liquefy when the ambient temperature is low, forming a vacuum in the hydrogen fluoride pipeline, sucking the electrolyte into the acid addition pipeline. The electrolyte solidification point temperature is 73°C. After the electrolyte enters the acid addition pipeline, it solidifies, causing the acid addition pipeline to be blocked. The subsequent acid addition work cannot be completed, and the acid addition pipeline must be stopped for maintenance. The blockage of the acid addition pipeline occurs frequently in winter, which has a great impact on production. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide an acid adding device for a flat-pressure electrolytic fluorine acid adding equipment to solve the problem in the prior art that when the ambient temperature is low, the electrolyte solidifies after entering the acid adding pipeline, causing blockage of the acid adding pipeline, and the subsequent acid adding work cannot be completed, so the acid adding pipeline must be stopped for maintenance.

[0004] The utility model provides an acid adding device for a flat-pressure electrolytic fluorine acid adding equipment, comprising a steel cylinder, a gas transmission pipe, an electrolytic cell, a gas supply pipe and a gas supply tank;

[0005] The steel cylinder is connected to one end of the gas pipe;

[0006] The other end of the gas delivery pipe faces the electrolytic cell;

[0007] One end of the air supply pipe is connected to the air supply pipe above the electrolytic cell;

[0008] The gas supply tank is connected to the gas supply pipe and is used for conveying gas into the gas transmission pipe.

[0009] Different from the prior art, the above technical solution has the following advantages: in the process of material preparation, the gas filling pipe is introduced into the preset gas in the gas supply tank through the gas supply pipe, so as to prevent the electrolyte from being sucked into the pipeline and solidifying during the cooling process, and when there is a need for dredging in the gas pipeline, gas is introduced into the gas supply pipe through the gas supply tank for dredging. The pressure balancing and dredging of the gas greatly reduce the increased cost of balancing the pressure of the gas pipeline in the equipment and dredging the pipeline, thereby improving the stability of the equipment operation.

[0010] As a preferred embodiment of the present application, it also includes an acid adding electric valve, which is arranged on the gas pipeline. By arranging the acid adding electric valve, it is convenient to conduct on-off processing of the circulating gas in the gas pipeline.

[0011] As a preferred embodiment of the present application, the acid-adding electric valve is arranged on the gas pipeline between the connecting part of the gas supply pipe and the gas supply pipe and the steel cylinder. By arranging the acid-adding electric valve on the gas pipeline between the connecting part of the gas supply pipe and the gas supply pipe and the connecting part of the steel cylinder and the gas supply pipe, it is convenient to prevent the gas from the gas supply pipe and the gas supply tank from being reversely input into the steel cylinder.

[0012] As a preferred embodiment of the present application, it also includes an electric air supply valve, which is arranged on the air supply pipe. By arranging the electric air supply valve, it is convenient to conduct on-off processing of the gas in the air supply pipe.

[0013] As a preferred embodiment of the present application, an acid-adding bubbling tube is also included, the acid-adding bubbling tube is connected to the gas pipe, the acid-adding bubbling tube is provided with two or more output ends, the output ends are arranged in the electrolytic cell, and the gas of the gas pipe is connected to the electrolytic cell through the acid-adding bubbling tube. By providing an acid-adding bubbling tube with two or more output ends, the gas pipe and the electrolytic cell are connected, so as to provide multiple gas input points in the electrolytic cell, improve the gas input efficiency, reduce the stroke of the electrolyte backflow in the electrolytic cell, and reduce the probability of pipe blockage.

[0014] As a preferred embodiment of the present application, the output ends of the acid-adding bubbling tube are symmetrically arranged on both sides of the electrolytic cell. By symmetrically arranging the output ends of the acid-adding bubbling tube on both sides of the electrolytic cell, it is convenient for the acid-adding bubbling tube to release gas on both sides of the electrolytic cell, thereby improving the contact efficiency between the material and the gas in the electrolytic cell.

[0015] As a preferred embodiment of the present application, the gas replenishing tank is a nitrogen gas replenishing tank. By using nitrogen as the output gas of the gas replenishing tank, nitrogen can be used as a flat-pressure material because of its stable, safe, non-flammable and non-explosive properties and low price.

[0016] As a preferred embodiment of the present application, a water heating jacket is further included, and the water heating jacket is arranged on the outside of the steel cylinder. By arranging the water heating jacket and passing hot water into the water heating jacket, the water heating jacket heats up the steel cylinder, thereby gasifying the material in the steel cylinder and ensuring the stability of the gas output of the steel cylinder to the gas transmission pipe.

[0017] As a preferred embodiment of the present application, the gas pipe further includes a bending section, and the discharge end of the gas pipe is directed to the middle of the electrolytic cell through the bending section. By providing the bending section, the discharge end of the gas pipe is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural diagram of the acid adding device of the flat-pressure electrolytic fluorine acid adding equipment in the embodiment of the utility model;

[0020] Figure 2 This is a front structural schematic diagram of a water heating jacket in an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the side structure of the water heating jacket in the embodiment of the utility model;

[0022] Figure 4 It is a detailed structural diagram of the steel cylinder in the embodiment of the utility model;

[0023] Figure 5 It is a detailed structural diagram of the gas replenishing tank in the embodiment of the utility model.

[0024] The reference numerals in the above drawings are described as follows:

[0025] 10. Steel cylinders;

[0026] 11. Water heating jacket;

[0027] 20. Gas pipeline;

[0028] 21. Acid adding electric valve; 22. Acid adding bubbling tube; 23. Bending section;

[0029] 30. Electrolyzer;

[0030] 40. Supplementary airway;

[0031] 41. Electric air supply valve;

[0032] 50. Air tank. DETAILED DESCRIPTION

[0033] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0035] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0036] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0037] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0038] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0039] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0040] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0041] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0042] Please also read Figures 1 to 5 The inventor provides an acid adding device for a flat-pressure electrolytic fluorine acid adding equipment, comprising a steel cylinder 10, a gas pipeline 20, an electrolytic cell 30, a gas supply pipe 40 and a gas supply tank 50. The steel cylinder 10 is connected to one end of the gas pipeline 20, and the steel cylinder 10 is used to deliver gas to the gas pipeline 20. The other end of the gas pipeline 20 faces the electrolytic cell 30, and the other end of the gas pipeline 20 is used to deliver gas to the material in the electrolytic cell 30. One end of the gas supply pipe 40 is connected to the gas pipeline 20 above the electrolytic cell 30. The gas supply pipe 40 delivers gas to the gas pipeline 20. The gas supply tank 50 is connected to the gas supply pipe 40, and is used to deliver gas to the gas pipeline 20 through the gas supply pipe 40.

[0043] According to the above structure, during the actual use of the acid adding device of the flat-pressure electrolytic fluorine acid adding equipment, the steel cylinder 10 outputs gas to the electrolyte in the electrolytic cell 30 through the gas pipe 20. When the steel cylinder 10 completes the gas input, the gas in the gas supply tank 50 is used to output the gas supply pipe 40, and the gas supply pipe 40 passes the gas into and keeps the gas in the gas supply pipe 20. After a certain period of gas replenishment, the delivery of the gas in the gas supply tank 50 is stopped to ensure that there is no material blockage in the gas supply pipe 20 or to dredge the condensed materials in the gas supply pipe 20. In the process of material preparation, the gas supply pipe passes the preset gas in the gas supply tank 50 through the gas supply pipe 40, and the electrolyte is prevented from being sucked back into the pipeline to produce solidification during the cooling process. In the process of dredging in the gas supply pipe 20, the gas is passed into the gas supply pipe 40 through the gas supply tank 50 for dredging. The pressure balance and dredging of the gas greatly reduce the increased cost of balancing the pressure of the gas supply pipe 20 in the equipment and dredging the pipeline, and improve the stability of the equipment.

[0044] Please also read Figures 1 to 5 As a preferred embodiment of the present application, it also includes an acid adding electric valve 21, and the acid adding electric valve 21 is arranged on the gas delivery pipe 20. By setting the acid adding electric valve 21, it is convenient to conduct on-off processing of the circulating gas in the gas delivery pipe 20.

[0045] Please also read Figures 1 to 5 As a preferred embodiment of the present application, the acid adding electric valve 21 is arranged on the gas supply pipe 20 between the connecting part of the gas supply pipe 40 and the gas supply pipe 20 and the steel cylinder 10. By arranging the acid adding electric valve 21 on the gas supply pipe 20 between the connecting part of the gas supply pipe 40 and the gas supply pipe 20 and the connecting part of the steel cylinder 10 and the gas supply pipe 20, it is convenient to prevent the gas in the gas supply pipe 40 and the gas supply tank 50 from being reversely input into the steel cylinder 10.

[0046] Please also read Figures 1 to 5 As a preferred embodiment of the present application, it also includes an air supply electric valve 41, which is arranged on the air supply pipe 40. By setting the air supply electric valve 41, it is convenient to conduct on-off processing of the gas in the air supply pipe 40.

[0047] Please also read Figures 1 to 5 As a preferred embodiment of the present application, an acid-adding bubbling tube 22 is further included, the acid-adding bubbling tube 22 is connected to the gas pipe 20, the acid-adding bubbling tube 22 is provided with two or more output ends, the output ends are arranged in the electrolytic cell 30, and the gas in the gas pipe 20 is connected to the electrolytic cell 30 through the acid-adding bubbling tube 22. By providing the acid-adding bubbling tube 22 with two or more output ends, the gas pipe 20 and the electrolytic cell 30 are connected, so that multiple gas input points are provided in the electrolytic cell 30, the gas input efficiency is improved, and the backflow of the electrolyte in the electrolytic cell 30 is reduced, and the probability of pipe blockage is reduced.

[0048] Please also read Figures 1 to 5 As a preferred embodiment of the present application, the output ends of the acid-adding bubbling tube 22 are symmetrically arranged on both sides of the electrolytic cell 30. By symmetrically arranging the output ends of the acid-adding bubbling tube on both sides of the electrolytic cell, it is convenient for the acid-adding bubbling tube to release gas on both sides of the electrolytic cell, thereby improving the contact efficiency between the material and the gas in the electrolytic cell.

[0049] Please also read Figures 1 to 5 As a preferred embodiment of the present application, the gas replenishing tank 50 is a nitrogen gas replenishing tank 50. By using nitrogen as the output gas of the gas replenishing tank 50, nitrogen can be used as a flat-pressure material because of its stable, safe, non-flammable and non-explosive properties and low price.

[0050] Please also read Figures 1 to 5 As a preferred embodiment of the present application, a water heating jacket 11 is further included, and the water heating jacket 11 is arranged on the outside of the steel cylinder 10. By arranging the water heating jacket and passing hot water into the water heating jacket, the water heating jacket heats the steel cylinder, gasifies the material in the steel cylinder, and ensures the stability of the gas output of the steel cylinder to the gas transmission pipe.

[0051] Please also read Figures 1 to 5 As a preferred embodiment of the present application, the gas pipe 20 further includes a bending section 23, and the discharge end of the gas pipe 20 is directed to the middle of the electrolytic cell 30 through the bending section 23. By providing the bending section 23, the output end of the gas pipe 20 is convenient.

[0052] In the above embodiment, the end of the gas supply pipe 20 facing the electrolytic cell can be directly immersed in the material in the electrolytic cell, or the end facing the electrolytic cell can be immersed in the material in the electrolytic cell by using the acid bubbling tube 22.

[0053] In certain preferred embodiments, the gas supply pipe 20 and the acid addition bubbling pipe 22, the gas supply pipe 20 and the acid addition electric valve 21, the gas supply pipe 20 and the steel cylinder 10, the gas supply pipe 40 and the gas supply pipe 20, the gas supply pipe 40 and the gas supply electric valve 41, and the gas supply pipe 40 and the gas supply tank 50 are connected by flanges and bolts.

[0054] In the above embodiment, the acid addition electric valve 21 and the air supply electric valve 41 can be connected to an electronic control device, such as a single-chip microcomputer or a computer, through an electrical conductor, and the on / off and flow control of the acid addition electric valve and the air supply electric valve can be achieved by receiving the opening and closing signal or the valve switch stroke signal of the electric valve.

[0055] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A flat-pressure electrolytic fluorine acid adding device, characterized in that: Including cylinders, gas pipes, electrolyzers, gas supply pipes and gas supply tanks; The steel cylinder is connected to one end of the gas pipe; The other end of the gas delivery pipe faces the electrolytic cell; One end of the air supply pipe is connected to the air supply pipe above the electrolytic cell; The gas supply tank is connected to the gas supply pipe and is used for conveying gas into the gas transmission pipe.

2. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 1, characterized in that: It also includes an acid-adding electric valve, which is arranged on the gas pipeline.

3. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 2, characterized in that: The acid adding electric valve is arranged on the gas delivery pipe between the connecting part of the gas supply pipe and the gas delivery pipe and the steel cylinder.

4. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 1, characterized in that: It also includes an air supply electric valve, which is arranged on the air supply pipe.

5. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 1, characterized in that: It also includes an acid-adding bubbling tube, which is connected to the gas pipe. The acid-adding bubbling tube is provided with more than two output ends, the output ends are arranged in the electrolytic cell, and the gas in the gas pipe is connected to the electrolytic cell through the acid-adding bubbling tube.

6. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 5, characterized in that: The output ends of the acid adding bubbling tube are symmetrically arranged on both sides of the electrolytic cell.

7. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 1, characterized in that: The gas replenishing tank is a nitrogen gas replenishing tank.

8. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 1, characterized in that: It also includes a water heating jacket, which is arranged on the outside of the steel cylinder.

9. The acid adding device of the flat-pressure electrolytic fluorine acid adding equipment according to claim 1, characterized in that: The gas delivery pipe also includes a bending section, and the discharge end of the gas delivery pipe points to the middle of the electrolytic cell through the bending section.

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