Rectifying tower for anhydrous hydrogen fluoride

Abstract

The utility model relates to the technical field of hydrogen fluoride production, in particular to a rectifying tower for anhydrous hydrogen fluoride, which comprises a heat preservation shell, and the rectifying tower is mounted in the heat preservation shell; when waste liquid needs to be discharged, a three-way control valve communicated with the bottom end of the communication mounting piece controls a valve on one side of a discharge pipe to be opened, so that the production waste liquid flows out of the discharge pipe penetrating through the bottom end of the fixed shell, and when the interior of the rectifying tower is cleaned, a pipeline is opened through a closed valve to input a cleaning agent; and the waste liquid is input into the pressurizing sprayer along the through connecting pipe and a pipeline mounted in the pipeline mounting bracket, then is sprayed on the inner wall of the rectifying tower through the annular spraying opening, neutralizes the residual waste liquid, flushes to the lower part, passes through the other side of the three-way control valve, and is discharged through a waste liquid pipe communicated with the inclined leakage opening for unified collection.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen fluoride production technical field, concretely relates to a rectifying column for anhydrous hydrogen fluoride. BACKGROUND

[0002] Anhydrous hydrogen fluoride is a colorless transparent liquid at low temperature, which is prepared by reacting acid-making grade fluorite and sulfuric acid in a rotary furnace at 200-250 DEG C through multi-step purification treatment, or by reacting by-product silicon tetrafluoride and ammonium fluoride, and then decomposing with sulfuric acid, and has extremely active chemical properties, strong water absorption, strong corrosion, and can react with alkali, metal, oxide and silicate (can corrode glass and destroy other silicon-containing substances), and can freely mix with water to form hydrofluoric acid under certain conditions.

[0003] The rectifying column for anhydrous hydrogen fluoride disclosed in publication No. CN218793945U can heat the inner tower by using the heat of the outer tower, thereby reducing the energy loss of the steam reboiler and saving resources, but in the process of use, water stains will be attached to the inner wall after multiple heating and distillation, and it is inconvenient to clean the inside during the replacement process, which is time-consuming and laborious, and the efficiency is low. Therefore, we propose a rectifying column for anhydrous hydrogen fluoride. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model provides a rectifying column for anhydrous hydrogen fluoride.

[0005] The utility model solves the technical problems by adopting the technical scheme of a rectifying column for anhydrous hydrogen fluoride, which comprises a heat preservation shell, a rectifying tower is installed in the heat preservation shell, a pressurized sprayer is arranged at the central top of the rectifying tower, the pressurized sprayer is installed in the rectifying tower through a pipeline installation support, an annular spray opening is installed at the central bottom of the pressurized sprayer, and the sidewall of the pressurized sprayer is connected with a through connection pipe through a pipeline installed in the pipeline installation support.

[0006] A fixed shell is fixedly connected to the bottom end of the rectifying tower, a communication installation part is connected to the bottom end of the rectifying tower in a penetrating mode, the communication installation part is installed in the fixed shell, the bottom end of the communication installation part is connected to the top end of a three-way control valve in a penetrating mode, and an inclined leakage opening is connected to one side of the bottom end of the three-way control valve in a penetrating mode.

[0007] By adopting the technical scheme, the raw material is added into the rectifying tower installed in the heat preservation shell, rectification processing is carried out, production operation is carried out through the auxiliary refining tower cooperation, when waste liquid needs to be discharged, the valve on one side of the discharge pipe is opened through the three-way control valve connected to the bottom end of the communication installation, so that the production waste liquid flows out from the discharge pipe penetrating through the bottom end of the fixed shell, when the inside of the rectifying tower is cleaned, the cleaning agent is input into the pressurized sprayer through the pipeline input through the closed valve along the penetrating connection pipe and the pipeline installed in the pipeline installation support, and then is sprayed through the annular spray opening in the inner wall of the rectifying tower and the residual waste liquid, and is washed to the lower side, and is discharged through the waste liquid pipe connected through the inclined leakage hole on the other side of the three-way control valve and is uniformly collected.

[0008] Specifically, the bottom end of the three-way control valve is connected with the discharge pipe penetratingly on the side away from the inclined leakage hole.

[0009] By adopting the technical scheme, the liquid discharged during processing is discharged through the discharge pipe connected to the other end of the three-way control valve.

[0010] Specifically, the penetrating connection pipe is penetratingly inserted into the side wall of the closed valve.

[0011] By adopting the technical scheme, the heat is prevented from escaping and the steam is prevented from flowing away when the rectification processing is carried out by penetratingly connecting the penetrating connection pipe to the side wall of the closed valve.

[0012] Specifically, the side wall of the closed valve is connected with an external cleaning agent storage device through the pipeline.

[0013] By adopting the technical scheme, the cleaning agent is directly sent in through the external cleaning agent storage device, and the inner wall of the rectifying tower is conveniently cleaned.

[0014] Specifically, the bottom end of the inclined leakage hole is penetratingly installed with a waste liquid pipe.

[0015] By adopting the technical scheme, the waste water cleaned by the cleaning agent is uniformly collected through the waste liquid pipe and is uniformly treated, so that pollution is avoided.

[0016] Specifically, the side wall of the heat preservation shell is penetratingly connected with an auxiliary refining tower for assisting the rectification of the rectifying tower.

[0017] By adopting the technical scheme, the rectification processing is carried out through the auxiliary refining tower cooperating with the rectifying tower to produce hydrogen fluoride.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The technical scheme of the present application is characterized in that raw materials are added into the rectifying tower installed in the heat preservation shell for rectification processing, and the production operation is performed by cooperating with the auxiliary refining tower; when waste liquid needs to be discharged, the valve on one side of the discharge pipe is opened by controlling the three-way control valve connected to the bottom end of the communication installation, so that the production waste liquid flows out of the discharge pipe penetrating through the bottom end of the fixed shell; when the inside of the rectifying tower is cleaned, the cleaning agent is input into the pressurized sprayer through the pipeline by opening the closed valve, and then sprayed through the annular spraying port into the inner wall of the rectifying tower and the residual waste liquid, and then washed to the lower side, and then discharged through the waste liquid pipe connected to the other side of the three-way control valve through the inclined leakage port. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in combination with the drawings and examples.

[0021] Figure 1 It is an isometric view of the present application;

[0022] Figure 2 It is a schematic view of the overall structure connection plane of the present application;

[0023] Figure 3 It is a schematic view of the present application; Figure 2 It is an enlarged schematic view of the structure at A in the present application;

[0024] In the drawings: 1, heat preservation shell; 2, rectifying tower; 3, pressurized sprayer; 4, annular spraying port; 5, pipeline installation support; 6, through connection pipe; 7, closed valve; 8, communication installation; 9, three-way control valve; 10, discharge pipe; 11, inclined leakage port; 12, waste liquid pipe; 13, fixed shell; 14, auxiliary refining tower. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application will be further described below in combination with specific embodiments.

[0026] Please refer to Figures 1-3 The present application provides a technical scheme: a rectifying tower for anhydrous hydrogen fluoride, comprising a heat preservation shell 1, a rectifying tower 2 is installed in the inside of the heat preservation shell 1, a pressurized sprayer 3 is arranged at the inside top center of the rectifying tower 2, and the pressurized sprayer 3 is installed in the inside of the rectifying tower 2 through a pipeline installation support 5, an annular spraying port 4 is installed at the bottom center of the pressurized sprayer 3, and the side wall of the pressurized sprayer 3 is connected to a through connection pipe 6 through the pipeline installed in the pipeline installation support 5;

[0027] The bottom end of the rectifying tower 2 is fixedly connected with a fixed shell 13, the bottom end of the rectifying tower 2 is throughly connected with a communication installation 8, the communication installation 8 is installed in the inside of the fixed shell 13, the bottom end of the communication installation 8 is throughly connected with the top end of a three-way control valve 9, the bottom end of the three-way control valve 9 is throughly connected with an inclined leakage hole 11 on one side.

[0028] In use, the raw materials are added into the rectifying tower 2 installed in the heat preservation shell 1, rectification processing is carried out, production operation is carried out through the cooperation of the auxiliary refining tower 14, when it is needed to discharge waste liquid, the valve on one side of the discharge pipe 10 is opened through the control of the three-way control valve 9 communicated with the bottom end of the communication installation 8, so that the production waste liquid flows out from the discharge pipe 10 through the bottom end of the fixed shell 13, when the inside of the rectifying tower 2 is cleaned, the cleaning agent is input into the pressurized sprayer 3 through the pipeline installed in the throughly connected pipe 6 and the pipeline installation support 5, and then is sprayed on the inner wall of the rectifying tower 2 through the annular spray opening 4, and is neutralized and washed down in the residual waste liquid, and is discharged through the waste liquid pipe 12 communicated with the other side of the three-way control valve 9 through the inclined leakage hole 11, and is collected uniformly.

[0029] As shown in the figure, the bottom end of the three-way control valve 9 is throughly connected with the discharge pipe 10 on the side away from the inclined leakage hole 11.

[0030] In use, the liquid discharged during processing is discharged through the discharge pipe 10 communicated with the other end of the three-way control valve 9.

[0031] As shown in the figure, the throughly connected pipe is throughly inserted into the side wall of the sealing valve.

[0032] In use, the throughly connected pipe is installed with the side wall of the sealing valve to avoid heat dissipation and steam loss during rectification processing.

[0033] As shown in the figure, the side wall of the sealing valve is communicated with an external cleaning agent storage device through a pipeline.

[0034] In use, the cleaning agent is directly sent in through the external cleaning agent storage device, which is convenient for cleaning the inner wall of the rectifying tower.

[0035] As shown in the figure, the bottom end of the inclined leakage hole 11 is throughly installed with the waste liquid pipe 12.

[0036] In use, the waste water cleaned by the cleaning agent is uniformly collected through the waste liquid pipe 12 for uniform treatment to avoid pollution.

[0037] As shown in the figure, the side wall of the heat preservation shell 1 is throughly connected with an auxiliary refining tower 14 for assisting the rectification of the rectifying tower 2.

[0038] In use, the auxiliary refining tower 14 cooperates with the rectifying tower 2 to carry out distillation processing to produce hydrogen fluoride.

[0039] The working principle and use process of the utility model: the raw materials are added to the rectifying tower 2 installed in the heat preservation shell 1, rectification processing is carried out, and the production operation is carried out through the cooperation of the auxiliary refining tower 14, when it is needed to discharge waste liquid, the valve on one side of the discharge pipe 10 is opened through the three-way control valve 9 communicated with the bottom end of the connecting installation piece 8, so that the production waste liquid flows out from the discharge pipe 10 through the bottom end of the fixed shell 13, when the inside of the rectifying tower 2 is cleaned, the pipe is inputted with cleaning agent through the closed valve 7, and the pipe is inputted into the pressurized sprayer 3 along the through connecting pipe 6 and the pipe installed in the pipe installation support 5, then the inside wall of the rectifying tower 2 is sprayed through the annular spray opening 4, and the residual waste liquid is neutralized and washed to the lower side, and the cleaning waste water discharge pipe 12 connected through the inclined leak hole 11 on the other side of the three-way control valve 9 is discharged to be collected uniformly.

[0040] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An anhydrous hydrogen fluoride rectification column characterized by, The utility model relates to a distillation tower with pressurized sprayer, which comprises a heat preservation shell (1), a distillation tower (2) is installed in the heat preservation shell (1), a pressurized sprayer (3) is arranged in the middle of the top end of the distillation tower (2), the pressurized sprayer (3) is installed in the distillation tower (2) through a pipeline installation support (5), an annular spray opening (4) is installed in the middle of the bottom end of the pressurized sprayer (3), the sidewall of the pressurized sprayer (3) is connected with a through connection pipe (6) through a pipeline installed in the pipeline installation support (5). The bottom end of the distillation tower (2) is fixedly connected with a fixed shell (13), the bottom end of the distillation tower (2) is through connected with a communication installation part (8), the communication installation part (8) is installed in the fixed shell (13), the bottom end of the communication installation part (8) is through connected with the top end of a three-way control valve (9), the bottom end of the three-way control valve (9) is through connected with an inclined leakage opening (11) on one side.

2. The rectification column for anhydrous hydrogen fluoride according to claim 1, characterized by The bottom end of the three-way control valve (9) is through connected with a discharge pipe (10) on the side away from the inclined leakage opening (11).

3. The rectification column for anhydrous hydrogen fluoride according to claim 1, characterized by The through connection pipe (6) is through inserted in the sidewall of a sealing valve (7).

4. The rectification column for anhydrous hydrogen fluoride according to claim 3, characterized by The sidewall of the sealing valve (7) is connected with an external cleaning agent storage device through a pipeline.

5. The rectification column for anhydrous hydrogen fluoride according to claim 1, characterized by The bottom end of the inclined leakage opening (11) is through installed with a waste liquid pipe (12).

6. The rectification column for anhydrous hydrogen fluoride according to claim 1, characterized by The sidewall of the heat preservation shell (1) is through connected with an auxiliary distillation tower (14) for assisting the distillation of the distillation tower (2).

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