Device for condensing and recovering organic solvent in tail gas by ice maker

Abstract

The utility model relates to the technical field of chemical production, and discloses a device for condensing and recovering an organic solvent in tail gas by an ice maker, which comprises an ice maker main body, one side of the ice maker main body is fixedly connected with a water outlet pipe, one side of the water outlet pipe is fixedly connected with a graphite condenser, and the water outlet pipe is fixedly connected with a water inlet and return valve; a liquid discharging valve is installed on the liquid discharging pipe, the side, away from the graphite condenser, of the liquid discharging pipe is fixedly connected with a tail gas condensation receiving tank, the upper end of the graphite condenser is fixedly connected with an inlet pipe, the upper end of the graphite condenser is fixedly connected with a pre-cooling pipe, and the inlet pipe penetrates through the pre-cooling pipe. The device has the advantages that the organic solvent in the tail gas can be well condensed and recycled, the loss of the solvent is reduced, the content of non-methane hydrocarbon in the tail gas is reduced, and the treatment difficulty and the operation cost of a tail gas treatment system are reduced.

Description

Technical Field

[0001] The present application relates to the field of chemical production technology, and in particular to a device for recovering organic solvents in tail gas by condensing with an ice machine. Background Art

[0002] Copper extractants are a class of chemical reagents used to extract copper from ores or waste. The production of copper extractants involves a series of chemical processes that achieve selective separation and extraction of copper mainly by forming complexes with copper ions.

[0003] At present, in the production process of copper extractant, organic solvents will enter the tail gas treatment system along with the tail gas, which will cause the loss of solvents on the one hand, and increase the difficulty and operation cost of the tail gas treatment system on the other hand. The content of non-methane total hydrocarbons in the tail gas is relatively high (the emission can meet the standard), which has certain harm to the environment. In the early stage, the method of cooling circulating water primary condensation was used to condense and recover organic solvents. The temperature of cooling water was about 25-30℃, and the condensation effect was poor, which could not achieve a good solvent condensation recovery effect. Therefore, a device for condensing and recovering organic solvents in tail gas with an ice machine was designed to solve the above-mentioned problems. Utility Model Content

[0004] In order to solve the problem, the present application provides a device for recovering organic solvents in tail gas by condensing with an ice machine.

[0005] The present application provides a device for recovering organic solvents in tail gas by condensing with an ice machine, which adopts the following technical solution:

[0006] A device for recovering organic solvents in tail gas by condensing an ice machine comprises an ice machine main body, one side of the ice machine main body is fixedly connected to a water outlet pipe, one side of the water outlet pipe is fixedly connected to a graphite condenser, the water outlet pipe is fixedly connected to a water inlet and return valve, the lower end of the graphite condenser is fixedly connected to a downpipe, a downpipe is provided with a downpipe valve, the side of the downpipe away from the graphite condenser is fixedly connected to a tail gas condensation receiving tank, the upper end of the graphite condenser is fixedly connected to an inlet pipe, the upper end of the graphite condenser is fixedly connected to a precooling pipe, and the inlet pipe passes through the precooling pipe.

[0007] Preferably, a feed valve is installed on the tail gas condensate receiving tank, the feed valve is fixedly connected to the downpipe, and a drain valve is fixedly connected to the bottom of the tail gas condensate receiving tank.

[0008] Preferably, an upper end of one side of the ice machine body is fixedly connected to a water inlet pipe, and one side of the water inlet pipe is fixedly connected to a graphite condenser.

[0009] Preferably, a liquid inlet pipe is fixed on one upper end of one side of the pre-cooling tube, the upper end of the liquid inlet pipe is fixedly connected to a connecting pipe, one side of the connecting pipe is fixedly connected to a liquid outlet pipe, the liquid outlet pipe is fixedly connected to a micro pump, one side of the liquid outlet pipe is fixedly connected to a cooling frame, and one side of the cooling frame is fixedly connected to the pre-cooling tube.

[0010] Preferably, one side of the cooling frame is fixedly connected to a mounting frame, and a heat sink is installed in the mounting frame.

[0011] Preferably, the lower end of the cooling frame is fixedly connected to a circulation pipe, and one side of the circulation pipe is fixedly connected to a pre-cooling pipe.

[0012] Preferably, one side of the pre-cooling tube is fixedly connected to a mounting frame, and the lower end of the mounting frame is fixedly connected to a graphite condenser.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. In the present invention, by using 0-5℃ ice machine to freeze water, it can play a good role in condensing and recovering organic solvents in tail gas, reduce the loss of solvents, and reduce the content of non-methane total hydrocarbons in tail gas, thereby reducing the difficulty of treatment and the operating cost of the tail gas treatment system;

[0015] 2. In the utility model, the exhaust gas can be pre-cooled by setting up a pre-cooling pipe, and cooling water at 15-20 degrees is used for cooling, so as to condense part of the organic solvent in the exhaust gas first, thereby reducing the load entering the graphite condenser and preventing the direct use of low-temperature freezing water for condensation, which may cause frost on the surface of the graphite condenser and affect the condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial cross-sectional structural schematic diagram of the main body of the application embodiment;

[0017] Figure 2 It is a schematic diagram of the structure of the main body of the application embodiment;

[0018] Figure 3 It is a schematic diagram of the pre-cooling frame structure of the application embodiment.

[0019] Explanation of the reference numerals in the accompanying drawings: 1. ice machine body; 2. graphite condenser; 3. exhaust gas condensation receiving tank; 4. water outlet pipe; 5. water inlet and return valve; 6. lower liquid pipe; 7. lower liquid valve; 8. feed valve; 9. drain valve; 10. water inlet pipe; 11. inlet pipe; 12. pre-cooling pipe; 13. mounting frame; 14. liquid outlet pipe; 15. cooling frame; 16. micro pump; 17. connecting pipe; 18. liquid inlet pipe; 19. circulation pipe; 20. mounting frame. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-3 This application is described in further detail.

[0021] The present application discloses a device for recovering organic solvents in tail gas by condensing with an ice machine. Figure 1-3 , a device for recovering organic solvent in tail gas by condensing an ice machine, comprising an ice machine body 1, one side of the ice machine body 1 is fixedly connected to a water outlet pipe 4, one side of the water outlet pipe 4 is fixedly connected to a graphite condenser 2, the water outlet pipe 4 is fixedly connected to a water inlet and return valve 5, the lower end of the graphite condenser 2 is fixedly connected to a lower liquid pipe 6, a lower liquid valve 7 is installed on the lower liquid pipe 6, the side of the lower liquid pipe 6 away from the graphite condenser 2 is fixedly connected to a tail gas condensation receiving tank 3, the upper end of the graphite condenser 2 is fixedly connected to an inlet pipe 11, the upper end of the graphite condenser 2 is fixedly connected to a precooling pipe 12, the inlet pipe 11 passes through the precooling pipe 12, and the precooling pipe 12 is filled with cooling water;

[0022] By adopting the above technical scheme, a feed valve 8 is installed on the exhaust gas condensation receiving tank 3, and the feed valve 8 and the downpipe 6 are fixedly connected to control the exhaust gas and organic solvent entering the exhaust gas condensation receiving tank 3. A drain valve 9 is fixedly connected to the bottom of the exhaust gas condensation receiving tank 3 to control the discharge of the organic solution from the exhaust gas condensation receiving tank 3.

[0023] By adopting the above technical solution, the upper end of one side of the ice machine body 1 is fixedly connected to the water inlet pipe 10, and one side of the water inlet pipe 10 is fixedly connected to the graphite condenser 2, which is used to send the cooling water that absorbs superheat into the ice machine body 1 again for heat exchange cooling treatment.

[0024] By adopting the above technical scheme, a liquid inlet pipe 18 is fixed to one side of the upper end of one side of the pre-cooling pipe 12, one side of the upper end of the liquid inlet pipe 18 is fixedly connected to the connecting pipe 17, one side of the connecting pipe 17 is fixedly connected to the liquid outlet pipe 14, the liquid outlet pipe 14 is fixedly connected to a micro pump 16, one side of the liquid outlet pipe 14 is fixedly connected to a cooling frame 15, one side of the cooling frame 15 is fixedly connected to the pre-cooling pipe 12, the lower end of the cooling frame 15 is fixedly connected to a circulation pipe 19, one side of the circulation pipe 19 is fixedly connected to the pre-cooling pipe 12, and by starting the micro pump 16, the micro pump 16 can transport the cooling water in the cooling frame 15 to the pre-cooling pipe 12, so that the pre-cooling pipe 12 can be used continuously to pre-cool the exhaust gas entering the pipe 11.

[0025] By adopting the above technical solution, one side of the cooling frame 15 is fixedly connected to the mounting frame 20. A heat sink is installed in the mounting frame 20 to replace the heat of the cooling water in the cooling frame 15, thereby achieving the purpose of recycling the cooling water.

[0026] By adopting the above technical solution, one side of the precooling tube 12 is fixedly connected to the mounting frame 13, and the lower end of the mounting frame 13 is fixedly connected to the graphite condenser 2 for fixing the precooling tube 12, thereby facilitating the use of the precooling tube 12.

[0027] The implementation principle of the device for condensing and recovering organic solvents in tail gas of an ice machine in the embodiment of the present application is as follows: when in use, the water inlet and return valve 5 is opened, so that the cooling water in the ice machine body 1 enters the graphite condenser 3 through the water outlet pipe 4, and the tail gas in the pipe 11 enters the graphite condenser 3 to be cooled. Before this, the tail gas in the pipe 11 first enters the inlet pipe 11 wrapped by the pre-cooling pipe 12, and cooling water is injected into the pre-cooling pipe 12 so that the cooling water absorbs the heat of the tail gas in the inlet pipe 11. At the same time, the micro motor 16 is started, so that the micro motor 16 drives the cooling frame 15 to transport the cooled cooling water through the liquid outlet pipe 14 and the connecting pipe 17. , so that the liquid inlet pipe 18 is poured into the pre-cooling pipe 12, and the cooling water that has absorbed heat is transported from the circulation pipe 19 to the cooling frame 15, and then the heat sink installed in the installation frame 20 is used to dissipate heat and cool down, so as to achieve the purpose of pre-cooling the exhaust gas before entering the graphite condenser 3, and preliminarily condense the organic solvent in the exhaust gas. The pre-cooling pipe 12 uses cooling water with a slightly higher temperature (15-20 degrees) to cool, and first condense part of the organic solvent in the exhaust gas, thereby reducing the load entering the graphite condenser 2, and preventing the direct use of low-temperature frozen water for condensation, which may cause frost on the surface of the graphite condenser 2 and affect the condensation effect.

[0028] After pre-cooling, the exhaust gas enters the graphite condenser 3 and is cooled by cooling water at 0-5 degrees. After cooling, the lower liquid valve 7 and the feed valve 8 are opened to transport the exhaust gas and the organic solvent from the lower liquid pipe 6 to the exhaust gas condensation receiving tank 3, and the drain valve 9 is closed to collect and process the exhaust gas and the organic solvent.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0030] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for recovering organic solvents from tail gas by condensing with an ice machine, characterized in that: The ice machine comprises an ice machine body (1), one side of the ice machine body (1) is fixedly connected to a water outlet pipe (4), one side of the water outlet pipe (4) is fixedly connected to a graphite condenser (2), the water outlet pipe (4) is fixedly connected to a water inlet and return valve (5), the lower end of the graphite condenser (2) is fixedly connected to a lower liquid pipe (6), a lower liquid valve (7) is installed on the lower liquid pipe (6), the side of the lower liquid pipe (6) away from the graphite condenser (2) is fixedly connected to an exhaust gas condensation receiving tank (3), the upper end of the graphite condenser (2) is fixedly connected to an inlet pipe (11), the upper end of the graphite condenser (2) is fixedly connected to a precooling pipe (12), and the inlet pipe (11) passes through the precooling pipe (12).

2. The device for recovering organic solvents in tail gas by condensing with an ice machine according to claim 1, characterized in that: A feed valve (8) is installed on the tail gas condensate receiving tank (3), the feed valve (8) is fixedly connected to the downpipe (6), and a drain valve (9) is fixedly connected to the bottom of the tail gas condensate receiving tank (3).

3. The device for recovering organic solvents in tail gas by condensing with an ice machine according to claim 1, characterized in that: The upper end of one side of the ice machine body (1) is fixedly connected to a water inlet pipe (10), and one side of the water inlet pipe (10) is fixedly connected to a graphite condenser (2).

4. The device for recovering organic solvents in tail gas by condensing with an ice machine according to claim 1, characterized in that: A liquid inlet pipe (18) is fixed to one upper end of one side of the pre-cooling pipe (12), one upper end of the liquid inlet pipe (18) is fixedly connected to a connecting pipe (17), one side of the connecting pipe (17) is fixedly connected to a liquid outlet pipe (14), a micro pump (16) is fixedly connected to the liquid outlet pipe (14), one side of the liquid outlet pipe (14) is fixedly connected to a cooling frame (15), and one side of the cooling frame (15) is fixedly connected to the pre-cooling pipe (12).

5. The device for recovering organic solvents in tail gas by condensing with an ice machine according to claim 4, characterized in that: One side of the cooling frame (15) is fixedly connected to a mounting frame (20), and a heat sink is installed in the mounting frame (20).

6. The device for recovering organic solvents in tail gas by condensing with an ice machine according to claim 4, characterized in that: The lower end of the cooling frame (15) is fixedly connected to a circulation pipe (19), and one side of the circulation pipe (19) is fixedly connected to a pre-cooling pipe (12).

7. The device for recovering organic solvents in tail gas by condensing with an ice machine according to claim 1, characterized in that: One side of the precooling tube (12) is fixedly connected to a mounting frame (13), and the lower end of the mounting frame (13) is fixedly connected to a graphite condenser (2).

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