Hydrofluoric acid waste liquid treatment device

Abstract

The utility model discloses a hydrofluoric acid waste liquid treatment device, and particularly relates to the technical field of waste liquid treatment, the hydrofluoric acid waste liquid treatment device comprises a cooling outer shell and a plurality of cooling inner shells positioned in the cooling outer shell, the plurality of cooling inner shells are separated by an upper partition plate and a lower partition plate and are fixed in the cooling outer shell, and the partition plates are fixed on the inner wall of the cooling outer shell. A coil reactor which spirally extends up and down is mounted in the cooling inner shell, a pressure relief pipeline penetrating through the cooling inner shell is connected to the coil reactor, and a pressure part connected with the pressure relief pipeline is mounted between the upper partition plate and the lower partition plate. The pressure value of a pipeline system is adjusted through the lifting movement of the piston in the pressure pipe, on the premise that pipeline pressure relief is achieved, gas leakage is avoided, the risk to the body health of workers in the waste liquid treatment process is reduced, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste liquid treatment, and more specifically, to a hydrofluoric acid waste liquid treatment device. Background Art

[0002] At present, there are two main types of hydrofluoric acid waste liquid treatment devices on the market: shell and tube hydrofluoric acid waste liquid treatment devices and plate trough hydrofluoric acid waste liquid treatment devices. Among them, the shell and tube hydrofluoric acid waste liquid treatment device is mainly composed of a coil reactor, a cooling shell, a rack and other parts. During the use of the hydrofluoric acid waste liquid device, the hydrofluoric acid waste liquid is mainly treated by the method of calcium salt precipitation. A large amount of heat will be released during the treatment process. After being heated, the hydrofluoric acid waste liquid will emit a large amount of hydrogen fluoride gas, causing the entire pipeline system to be partially over-pressured, and the traditional pressure relief components will cause gas leakage, which increases the risk of damage to the health of workers during the use of the hydrofluoric acid waste liquid treatment device and reduces the safety of the hydrofluoric acid waste liquid treatment device during use. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a hydrofluoric acid waste liquid treatment device, including a cooling outer shell and a plurality of cooling inner shells located inside the cooling outer shell, the plurality of cooling inner shells are separated by two upper and lower partitions and fixed inside the cooling outer shell, the partition is fixed on the inner wall of the cooling outer shell, a coil reactor extending up and down in a spiral shape is installed inside the cooling inner shell, a pressure relief pipeline penetrating the cooling inner shell is connected to the coil reactor, and a pressure piece connected to the pressure relief pipeline is installed between the upper and lower partitions.

[0004] In a preferred embodiment, the top of the coil reactor is connected to an upper connecting pipe, which passes through the cooling inner shell and extends to the top of the inner cavity of the cooling outer shell. An upper junction box is installed on the top of the inner cavity of the cooling shell, and the upper connecting pipe is connected to the inside of the upper junction box.

[0005] In a preferred embodiment, a valve for controlling on / off is installed inside the upper connecting pipe, and a liquid inlet pipe is connected to the top of the upper junction box, and the liquid inlet pipe extends to the outside of the cooling shell.

[0006] In a preferred embodiment, the bottom end of the coil reactor is connected to a lower connecting pipe, which passes through the cooling inner shell and extends to the bottom of the inner cavity of the cooling outer shell. A lower junction box is installed at the bottom of the inner cavity of the cooling shell. The lower connecting pipe is connected to the inside of the lower junction box. The bottom of the lower junction box is connected to a liquid outlet pipe, which extends to the outside of the cooling shell.

[0007] In a preferred embodiment, a pressure relief valve is installed on the pressure relief pipeline, the pressure relief pipeline is bent and the end extends between the upper and lower partitions, the pressure member includes a pressure tube installed between the upper and lower partitions, the bottom end of the pressure tube is fixed to the surface of the partition located below, a lifting and lowering piston is installed inside the pressure tube, and the top end of the pressure tube is connected to the pressure relief pipeline.

[0008] In a preferred embodiment, a through hole is provided on a partition plate at the bottom of the pressure tube, and a pressure sensor is mounted on the piston.

[0009] Technical effects and advantages of the utility model:

[0010] The utility model utilizes the lifting and lowering movement of the piston in the pressure tube to realize the adjustment of the pressure value of the pipeline system. Under the premise of realizing the pressure relief of the pipeline, gas leakage will not occur, the risk to the health of the workers in the waste liquid treatment process is reduced, and the safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the cooling shell of the utility model;

[0013] Figure 3 This is a view of the internal structure of the cooling inner shell and the pressure tube of the utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the interior of the cooling inner shell of the utility model from another angle.

[0015] Explanation of the reference numerals: 1 cooling outer shell, 2 cooling inner shell, 3 partition, 4 coil reactor, 5 pressure relief pipeline, 6 upper connecting pipe, 7 upper junction box, 8 liquid inlet pipe, 9 lower connecting pipe, 10 lower junction box, 11 liquid outlet pipe, 12 pressure relief valve, 13 pressure pipe, 14 piston, 15 through hole, 16 pressure sensor, 17 air vent. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0017] like Figure 1-4A hydrofluoric acid waste liquid treatment device shown includes a cooling outer shell and a plurality of cooling inner shells located inside the cooling outer shell, wherein the plurality of cooling inner shells are separated by two upper and lower partitions and fixed inside the cooling outer shell, wherein the partitions are fixed on the inner wall of the cooling outer shell, wherein a coil reactor extending up and down in a spiral shape is installed inside the cooling inner shell, wherein a pressure relief pipeline penetrating the cooling inner shell is connected to the coil reactor, and a pressure piece connected to the pressure relief pipeline is installed between the upper and lower partitions;

[0018] The top of the coil reactor is connected with an upper connecting pipe, which passes through the cooling inner shell and extends to the top of the inner cavity of the cooling outer shell. An upper junction box is installed on the top of the inner cavity of the cooling outer shell, and the upper connecting pipe is connected with the interior of the upper junction box.

[0019] A valve for controlling on and off is installed inside the upper connecting pipe, and a liquid inlet pipe is connected to the top of the upper junction box, and the liquid inlet pipe extends to the outside of the cooling shell;

[0020] On the basis of the above, during operation, the waste liquid to be treated enters the upper junction box from the liquid inlet pipe, then enters the lower connecting pipe below from the upper junction box, and enters the coil reactor in the cooling inner shell through the lower connecting pipe for reaction treatment;

[0021] Furthermore, since there are multiple cooling inner shells, the waste liquid can be controlled to enter the coil reactors in different cooling inner shells by controlling the on and off of the valve to treat the waste liquid. During the waste liquid treatment process, a large amount of heat and gas will be released, causing the internal pressure of the coil reactor to increase. The heat and pressure can be released through the pressure relief pipeline and pressure parts.

[0022] The bottom end of the coil reactor is connected to a lower connecting pipe, which passes through the cooling inner shell and extends to the bottom of the inner cavity of the cooling outer shell. A lower junction box is installed at the bottom of the inner cavity of the cooling outer shell. The lower connecting pipe is communicated with the inside of the lower junction box. The bottom of the lower junction box is connected to a liquid outlet pipe, which extends to the outside of the cooling shell.

[0023] On the basis of the above, the waste liquid treated by the coil reactor enters the lower junction box from the lower connecting pipe below. When the coil reactors in multiple cooling inner shells treat the waste liquid, the treated waste liquid will enter the lower junction box and be concentrated, and then discharged to the outside from the liquid outlet pipe below.

[0024] A pressure relief valve is installed on the pressure relief pipeline, the pressure relief pipeline is bent and the end thereof extends between the upper and lower partitions, the pressure member comprises a pressure pipe installed between the upper and lower partitions, the bottom end of the pressure pipe is fixed to the surface of the partition located below, a piston with lifting and lowering movement is installed inside the pressure pipe, and the top end of the pressure pipe is connected to the pressure relief pipeline;

[0025] A through hole is provided on the partition plate at the bottom of the pressure tube, and a pressure sensor is installed on the piston.

[0026] On the basis of the above, each cooling inner shell corresponds to a pressure piece, and a pressure sensor is arranged in the pressure pipe of the pressure piece, and the pressure sensor is connected to a control center. According to the pressure data obtained by the pressure sensor, the on-off of the valve in the upper connecting pipe above the cooling inner shell connected to the pressure piece is controlled. When the pressure data is abnormal, the upper connecting pipe above the cooling inner shell is controlled to be closed to prevent the waste liquid from entering the abnormal cooling inner shell.

[0027] Furthermore, the waste liquid enters the coil reactor through the upper connecting pipe at the bottom of the upper junction box for reaction. When the internal pressure of the coil reactor is too high, the pressure relief valve on the pressure relief pipeline is controlled to open, and a part of the pressure gas is controlled to enter the pressure relief pipeline. The gas enters the pressure tube along the pressure relief pipeline, squeezes the piston to move downward, and the gas under the piston of the pressure tube is discharged from the through hole into the cooling shell. There are air holes at the top and bottom of the cooling shell to balance the air pressure in the pressure tube during the movement of the piston;

[0028] The pressure value of the pipeline system is regulated by the lifting and lowering movement of the piston in the pressure tube. Under the premise of pipeline pressure relief, gas leakage will not occur, thus reducing the risk to the health of workers in the waste liquid treatment process and improving safety.

[0029] Among them, during the operation of the pressure relief pipeline, the pressure sensor on the piston will detect the air pressure value data in the pressure pipe in real time. When the data is abnormal, the control center connected to it will control the valve in the corresponding upper connecting pipe to close, and disconnect the group of cooling inner shells and their internal components from the upper junction box, and use the remaining groups of cooling inner shells to complete the treatment of waste liquid without shutting down the entire equipment and affecting the waste liquid treatment process. After the waste liquid is treated, the corresponding cooling inner shell and its internal components will be repaired, thereby improving safety.

[0030] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A hydrofluoric acid waste liquid treatment device, characterized in that: It includes a cooling outer shell and a plurality of cooling inner shells located inside the cooling outer shell. The plurality of cooling inner shells are separated by upper and lower partitions and fixed inside the cooling outer shell. The partitions are fixed on the inner wall of the cooling outer shell. A coil reactor extending up and down in a spiral shape is installed inside the cooling inner shell. A pressure relief pipeline penetrating the cooling inner shell is connected to the coil reactor. A pressure piece connected to the pressure relief pipeline is installed between the upper and lower partitions.

2. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: The top of the coil reactor is connected with an upper connecting pipe, which passes through the cooling inner shell and extends to the top of the inner cavity of the cooling outer shell. An upper junction box is installed on the top of the inner cavity of the cooling shell, and the upper connecting pipe is connected with the inside of the upper junction box.

3. A hydrofluoric acid waste liquid treatment device according to claim 2, characterized in that: A valve for controlling on and off is installed inside the upper connecting pipe, and a liquid inlet pipe is connected to the top of the upper junction box, and the liquid inlet pipe extends to the outside of the cooling shell.

4. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: The bottom end of the coil reactor is connected to a lower connecting pipe, which passes through the cooling inner shell and extends to the bottom of the inner cavity of the cooling outer shell. A lower junction box is installed at the bottom of the inner cavity of the cooling shell. The lower connecting pipe is communicated with the inside of the lower junction box. The bottom of the lower junction box is connected to a liquid outlet pipe, which extends to the outside of the cooling shell.

5. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: A pressure relief valve is installed on the pressure relief pipeline. The pressure relief pipeline is bent and the end extends between the upper and lower partitions. The pressure member includes a pressure tube installed between the upper and lower partitions. The bottom end of the pressure tube is fixed to the surface of the partition located below. A piston that can be lifted and lowered is installed inside the pressure tube. The top end of the pressure tube is connected to the pressure relief pipeline.

6. A hydrofluoric acid waste liquid treatment device according to claim 5, characterized in that: A through hole is provided on the partition plate at the bottom of the pressure tube, and a pressure sensor is installed on the piston.

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