Complete device for removing hydrogen chloride solvent in parallel

Abstract

The utility model relates to the technical field of chemical removal equipment, in particular to a hydrogen chloride solvent parallel type removal complete device which comprises at least two tank bodies, the tank bodies are used for containing a hydrogen chloride solvent, and heating mechanisms are arranged in the tank bodies and used for heating and evaporating the hydrogen chloride solvent; the inert gas input assembly is used for inputting inert gas into each tank body for steam stripping treatment; according to the utility model, the plurality of tank bodies are connected in parallel and can work at the same time, and the working state of each independent tank body can be flexibly adjusted according to actual requirements, so that the working efficiency is improved, and the working efficiency is improved. When one of the tank bodies needs to be maintained or fails, the other tank bodies can still operate normally, the whole removal process is not affected, and the influence caused by shutdown is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical removal equipment, in particular to a parallel removal complete set of devices for hydrogen chloride solvents. Background Technique

[0002] Hydrogen chloride solvents usually refer to solutions containing hydrogen chloride. Such solutions are widely used in industry, for example, in fields such as chemical synthesis, metal cleaning, pharmaceuticals, and the electronics industry. The hydrogen chloride solvent can be a hydrochloric acid solution or a hydrogen chloride solution in other solvents. Since hydrogen chloride is a harmful gas, corrosive and irritating, discharging it into the atmosphere will pollute the environment, and the removed hydrogen chloride can be recycled, for example, reintroduced into the production process or made into chemicals such as hydrochloric acid, thus saving resources and costs. Therefore, it is necessary to remove it.

[0003] Currently, when removing hydrogen chloride, generally only one removal method is used. Once a part of the system fails or needs maintenance, the entire removal process may be greatly affected. There is a lack of backup or parallel processing paths to maintain production continuity, which may lead to a slower processing speed and difficulty in meeting large-scale or high-production requirements. Based on the above situation, it is necessary to design a parallel removal complete set of devices for hydrogen chloride solvents to solve the above problems. Content of the Utility Model

[0004] The utility model provides a parallel removal complete set of devices for hydrogen chloride solvents to solve the problem that a single removal method in the prior art cannot effectively maintain production continuity.

[0005] The technical problems solved by the utility model are realized by the following technical solutions:

[0006] A parallel removal complete set of devices for hydrogen chloride solvents, including:

[0007] At least two tanks, the tanks are used to hold hydrogen chloride solvents, and a heating mechanism is arranged inside the tanks for heating and evaporating the hydrogen chloride solvents;

[0008] An inert gas input component for inputting inert gas into each tank for stripping treatment;

[0009] A condensation treatment component is connected to the output ends of at least two of the tanks for condensing and cooling the evaporated solvent gas;

[0010] A feeding component, the feeding component includes an injection pipe and a feeding pipe connected to the injection pipe. A first valve is installed on the feeding pipe, and the output end of the feeding pipe is connected to the tank.

[0011] Preferably, the inert gas input component includes a main pipe communicating with an external inert gas delivery pipe and a plurality of distribution pipes communicating with the main pipe. The plurality of distribution pipes are respectively communicated with each tank body, and second valves are arranged on the distribution pipes.

[0012] Preferably, the condensation treatment component includes a refrigeration mechanism and a main cold delivery pipe communicating with the output end of the refrigeration mechanism. A cold delivery branch pipe is arranged on the main cold delivery pipe, and a condensation tank corresponding to each tank body is arranged at the output end of the cold delivery branch pipe. A communication pipe is arranged between the condensation tank and the input end of the tank body, and a third valve is arranged on the cold delivery branch pipe.

[0013] Preferably, the heating mechanism is a "return" type electric heating pipe.

[0014] Preferably, the output end of the distribution pipe extends to the bottom of the tank body, and a porous gas distributor is connected to the output end of the distribution pipe.

[0015] Preferably, a liquid return pipe is arranged on each of the plurality of condensation tanks, and the output ends of the plurality of liquid return pipes are commonly connected to a liquid storage tank.

[0016] The beneficial effects of the present utility model are as follows: By arranging a plurality of tank bodies in parallel, the plurality of tank bodies can work simultaneously, and can also flexibly adjust the working states of each independent tank body according to actual needs. When one of the tank bodies needs to be maintained or fails, the other tank bodies can still operate normally, without affecting the entire removal process, and reducing the impact caused by shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Schematic three-dimensional structure provided by the present utility model Figure 1 :

[0019] Figure 2 Schematic three-dimensional structure provided by the present utility model Figure 2 :

[0020] Figure 3 Schematic cross-sectional structure diagram provided by the present utility model:

[0021] Figure 4 Schematic structure diagram of the gas distributor provided by the present utility model.

[0022] In the figure, 1 is the tank body; 2 is the heating mechanism; 3 is the injection pipe; 4 is the feeding pipe; 5 is the first valve; 6 is the main pipeline; 7 is the distribution pipeline; 8 is the second valve; 9 is the refrigeration mechanism; 10 is the main cold transmission pipe; 11 is the sub-cold transmission pipe; 12 is the condensation tank; 13 is the connecting pipe; 14 is the third valve; 15 is the gas distributor; 16 is the liquid return pipe; 17 is the liquid storage tank. Specific implementation manner

[0023] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below with reference to specific drawings.

[0024] Refer to Figures 1 - 4 As shown, the parallel type hydrogen chloride solvent removal complete set of equipment includes at least two tank bodies 1 for containing hydrogen chloride solvent, an inert gas input component and a condensation treatment component, and also includes a feeding component for inputting hydrogen chloride solvent into the tank body 1. A heating mechanism 2 is provided inside the tank body 1. When there is a large difference between the boiling point of the solvent in the tank body 1 and the boiling point of hydrogen chloride, the hydrogen chloride solvent is heated to the boiling point by the heating mechanism 2 to evaporate it, and hydrogen chloride is volatilized into gas. And an inert gas is input into each tank body 1 through the inert gas input component for stripping treatment. When the inert gas is introduced into the hydrogen chloride solvent at a certain flow rate and pressure, due to the density difference between the gas and the liquid and the agitation effect of the gas, the gas will form dispersed bubbles in the hydrogen chloride solvent. Since the concentration of hydrogen chloride in the bubbles is relatively low, while the concentration of the evaporated hydrogen chloride gas moving upward is relatively high, there is a concentration difference. At the same time, the contact between the bubbles and the hydrogen chloride gas increases the mass transfer opportunity, making it easier for hydrogen chloride molecules to diffuse from the high-concentration evaporated gas into the bubbles, thereby realizing the absorption of hydrogen chloride by the bubbles, and moving upward with the evaporated hydrogen chloride gas moving upward, entering the condensation treatment component connected to the input end of the tank body 1, and performing condensation and cooling treatment on the evaporated solvent gas. The hydrogen chloride gas and the inert gas carrying hydrogen chloride are condensed and cooled, the kinetic energy of the gas molecules decreases, and the distance between the molecules shrinks, so that it changes from a gaseous state to a liquid state. Due to the decrease in temperature, the saturated vapor pressure of hydrogen chloride decreases. When the actual pressure of the gas is greater than the saturated vapor pressure at this temperature, hydrogen chloride will condense into a liquid, thereby realizing recovery. By setting the combination of heating, stripping and condensation treatment, the treatment efficiency can be improved. Multiple parallel tank bodies 1 can be used to work simultaneously, or the working state of each independent tank body 1 can be flexibly adjusted according to actual needs. For example, when one of the tank bodies 1 needs to stop working, the remaining tank bodies 1 can still carry out the removal work without affecting the removal work and without the need to stop the whole machine.

[0025] Specifically, the injection assembly includes an injection pipe 3 and a feed pipe 4 connected to the injection pipe 3, a first valve 5 is installed on the feed pipe 4, and the output end of the feed pipe 4 is connected to the tank body 1. When in use, the injection pipe 3 is connected to the external hydrogen chloride solvent delivery mechanism, and then the first valve 5 is opened to deliver the hydrogen chloride solvent into the corresponding tank body 1;

[0026] The inert gas input assembly includes a main pipeline 6 connected to an external inert gas delivery pipeline and a plurality of distribution pipelines 7 connected to the main pipeline 6. The plurality of distribution pipelines 7 are respectively connected to each tank body 1, and a second valve 8 is provided on each distribution pipeline 7. By opening the second valve 8, the inert gas can enter the corresponding tank body 1 through the distribution pipeline 7 for stripping treatment, and the hydrogen chloride is evaporated from the solvent by heating. The introduction of the inert gas further promotes the separation and removal of the hydrogen chloride. The synergistic effect of the two accelerates the removal speed of the hydrogen chloride and improves the overall removal efficiency. The inert gas can be a stable gas such as nitrogen that is not easy to react chemically with hydrogen chloride.

[0027] Further, the condensation processing assembly includes a refrigeration mechanism 9 and a cold delivery main pipe 10 connected to the output end of the refrigeration mechanism 9, a cold delivery branch pipe 11 is provided on the cold delivery main pipe 10, and a condensing tank 12 corresponding to the tank body 1 is provided at the output end of the cold delivery branch pipe 11, and the refrigeration mechanism 9 can be a condenser, etc., and is a prior art, which will not be described in detail here, and the condensing tank 12 is connected to the input end of the tank body 1 through a connecting pipe 13, and a third valve 14 is provided on the cold delivery branch pipe 11. When the third valve 14 is opened, the cold air produced by the refrigeration mechanism 9 enters the condensing tank 12 through the cold delivery branch pipe 11, and the hydrogen chloride gas in the tank body 1 that enters the condensing tank 12 through the connecting pipe 13 is condensed and cooled, and liquefied into liquid and collected in the condensing tank 12, while the uncondensed gas in the steam is discharged from the exhaust hole (not shown in the figure) of the condensing tank 12;

[0028] The removal work is performed through multiple parallel tanks 1, and by correspondingly opening the first valve 5, the second valve 8 and the third valve 14, a certain tank 1 can be opened and closed individually to avoid affecting the work of the entire removal system, thereby improving the continuity of the removal.

[0029] Further, such as Figure 3 As shown, the heating mechanism 2 is a "return" type electric heating tube, which can increase the contact area with the solvent when the solvent in the tank body 1 is heated, so that the heating is more uniform.

[0030] Furthermore, the output end of the distribution pipe 7 extends to the bottom of the tank body 1, and the output end of the distribution pipe 7 is connected with a porous gas distributor 15. The bottom of the distribution pipe 7 extends into the interior of the solvent. When the inert gas passes through the holes on the gas distributor 15, it is restricted and squeezed, so as to be dispersed into multiple small airflows, and then small bubbles are formed. The concentration of hydrogen chloride in the solvent is higher than that in the bubbles, there is a concentration gradient. According to the mass transfer principle, hydrogen chloride molecules will diffuse from the high concentration to the low concentration, and thus enter the bubbles. When the bubbles rise, they will occupy a certain space, and the surrounding liquid and the hydrogen chloride dissolved in it will be carried by the bubbles and rise together, so as to carry away the hydrogen chloride.

[0031] Among them, liquid return pipes 16 are provided on multiple condensation tanks 12, and the output ends of the multiple liquid return pipes 16 are commonly connected with a liquid storage tank 17. The condensed liquid hydrogen chloride is uniformly collected into the liquid storage tank 17 through the liquid return pipes 16 in the condensation tanks 12 for subsequent unified treatment.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A complete set of parallel removal equipment for hydrogen chloride solvent, characterized in that: include; At least two tanks (1), the tanks (1) being used to contain a hydrogen chloride solvent, and the tanks (1) being provided with a heating mechanism (2) inside thereof for heating and evaporating the hydrogen chloride solvent; An inert gas input assembly, used to input inert gas into each tank (1) for stripping treatment; A condensation processing component, connected to the output ends of at least two of the tanks (1), and used for condensing and cooling the evaporated solvent gas; An injection assembly, the injection assembly comprising an injection pipe (3) and a feed pipe (4) connected to the injection pipe (3), a first valve (5) being installed on the feed pipe (4), and an output end of the feed pipe (4) being connected to the tank body (1).

2. The complete set of parallel removal of hydrogen chloride solvent according to claim 1, characterized in that: The inert gas input assembly comprises a main pipeline (6) connected to an external inert gas delivery pipeline and a plurality of distribution pipelines (7) connected to the main pipeline (6), the plurality of distribution pipelines (7) being respectively connected to each tank body (1), and the distribution pipelines (7) are each provided with a second valve (8).

3. The complete set of parallel removal of hydrogen chloride solvent according to claim 1, characterized in that: The condensation processing assembly comprises a refrigeration mechanism (9) and a cold supply main pipe (10) connected to an output end of the refrigeration mechanism (9); a cold supply branch pipe (11) is provided on the cold supply main pipe (10); and a condensation tank (12) corresponding to the tank body (1) is provided at the output end of the cold supply branch pipe (11); the condensation tank (12) is connected to the input end of the tank body (1) via a connecting pipe (13); and a third valve (14) is provided on the cold supply branch pipe (11).

4. The complete set of parallel removal of hydrogen chloride solvent according to claim 1, characterized in that: The heating mechanism (2) is a "return" type electric heating tube.

5. The complete set of parallel removal of hydrogen chloride solvent according to claim 2, characterized in that: The output end of the distribution pipeline (7) extends to the bottom of the tank body (1), and the output of the distribution pipeline (7) is provided with a porous gas distributor (15).

6. The complete set of parallel removal of hydrogen chloride solvent according to claim 3, characterized in that: A liquid return pipe (16) is provided on each of the plurality of condensing tanks (12), and output ends of the plurality of liquid return pipes (16) are commonly connected to a liquid storage tank (17).

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