Carbon disulfide high tank water seal production process and equipment

Abstract

The application relates to a carbon disulfide high tank water seal production process and equipment, and belongs to the technical field of chemical industry. The equipment comprises a storage tank and a high tank, the bottom end of the high tank is higher than the top end of the storage tank, a feeding pipe and a discharging pipe are arranged on the high tank, a feeding valve is arranged on the feeding pipe, a discharging valve is arranged on the discharging pipe, the feeding pipe is communicated with the bottom of the storage tank, a water pressure pipe is arranged on the storage tank, a first water inlet and a first air vent are arranged on the high tank, the high tank is communicated with a nitrogen source, a water inlet pipe is communicated with the feeding pipe, the water inlet pipe is arranged between the storage tank and the feeding valve, and a water inlet valve is arranged on the water inlet pipe. The application can reduce the possibility of carbon disulfide leakage and volatile dispersion, and has the effect of reducing safety hazards.

Description

TECHNICAL FIELD

[0001] The application relates to the field of chemical technology, in particular to a carbon disulfide high tank water seal production process and equipment. BACKGROUND

[0002] Carbon disulfide is an inorganic substance, chemical formula CS2, common solvent, colorless liquid. Industrial products are mixed with other sulfides (such as carbonyl sulfur) and become yellow, and have an unpleasant rotten radish smell. It can dissolve sulfur. Carbon disulfide is used to manufacture rayon, pesticides, accelerators, etc., and is also used as a solvent.

[0003] Carbon disulfide is a broad-spectrum enzyme inhibitor with cytotoxicity, which can destroy the normal metabolism of cells, interfere with lipoprotein metabolism and cause vascular lesions, neuropathy and damage to major organs throughout the body. Carbon disulfide has a low flash point, boiling point and ignition point, and is volatile, belonging to flammable and explosive liquid.

[0004] At present, the safe application of carbon disulfide in chemical enterprises in China is paid more and more attention. Carbon disulfide is an excellent solvent and is widely used to manufacture raw materials for viscose fibers and glass paper and to produce agricultural pesticides. It is also used as a lubricant for aviation. In the process of adding carbon disulfide, the existing technology directly uses a pump to pump carbon disulfide from the storage tank to the temporary storage container, thereby realizing the temporary storage of carbon disulfide. However, in this process, carbon disulfide is prone to leakage, which poses a safety hazard. SUMMARY

[0005] In order to improve the above technical problems, the application provides a carbon disulfide high tank water seal production process.

[0006] In a first aspect, the application provides a carbon disulfide high tank water seal device, which adopts the following technical scheme:

[0007] A carbon disulfide high tank water seal device, comprising a storage tank and a high tank, the bottom end of the high tank being higher than the top end of the storage tank, a feed pipe and a discharge pipe being arranged on the high tank, a feed valve being arranged on the feed pipe, a discharge valve being arranged on the discharge pipe, the feed pipe being in communication with the bottom of the storage tank, a water pressure pipe being arranged on the storage tank, a first water inlet and a first air vent being arranged on the high tank, the high tank being in communication with a nitrogen source, a water inlet pipe being in communication with the feed pipe, the water inlet pipe being arranged between the storage tank and the feed valve, a water inlet valve being arranged on the water inlet pipe.

[0008] By adopting the technical scheme, firstly, the discharge valve is opened, nitrogen is introduced into the high tank by using the nitrogen source, so that the air in the discharge pipe is replaced; secondly, the water inlet valve and the feed valve are opened, and the air in the feed pipe is discharged by introducing water into the water inlet pipe; then, after a certain height of water seal layer is added into the high tank through the first water inlet, the first water inlet is closed; nitrogen is introduced into the high tank by using the nitrogen source, so that the air in the high tank is completely replaced, and nitrogen sealing is maintained; finally, water is injected into the storage tank through the water pressure pipe, and the carbon disulfide in the storage tank is pressed into the high tank by using the water pressure, so that the carbon disulfide is transported and temporarily stored. Before the carbon disulfide is transported, the air in the high tank, the discharge pipe and the feed pipe has been replaced by nitrogen, so that the possibility of contact between the carbon disulfide and oxygen in the air is reduced; during the transportation of the carbon disulfide, the carbon disulfide is always in a water sealed state, so that the possibility of leakage and volatilization of the carbon disulfide is reduced, thereby reducing the possibility of combustion and explosion of the carbon disulfide and reducing the safety hazard.

[0009] Optionally, the high tank is provided with an overflow pipe, one end of the overflow pipe away from the high tank is provided with an overflow tank, the first air inlet is communicated with a balance pipe, one end of the balance pipe away from the first air inlet is communicated with the overflow tank, the overflow tank is provided with a second water inlet and a second air inlet, the second air inlet is communicated with the nitrogen source, and the overflow tank is provided with a first exhaust port.

[0010] By adopting the technical scheme, when the carbon disulfide in the high tank is excessively fed, the carbon disulfide in the high tank can be introduced into the overflow tank through the overflow pipe, so that the possibility of tank explosion caused by the increasing pressure in the high tank is reduced.

[0011] Optionally, the first exhaust port is communicated with an exhaust pipe, the exhaust pipe is communicated with a water seal tank, one end of the exhaust pipe away from the first exhaust port extends below the liquid level of the water seal tank, the top end of the water seal tank is lower than the bottom end of the first exhaust port, the water seal tank is provided with a second exhaust port, and the second exhaust port is communicated with a tail gas treatment system for purifying tail gas.

[0012] By adopting the technical scheme, water is injected into the water seal tank to form a water seal, so that the possibility of external air entering the overflow tank through the first exhaust port is reduced. The tail gas treatment system can adsorb or absorb the mixed carbon disulfide in the gas discharged from the second exhaust port, so as to remove the carbon disulfide, reduce the harm of the carbon disulfide to the human body, and reduce the potential safety hazards of combustion and explosion.

[0013] Optionally, a liquid level gauge is arranged in the water seal tank, a water supplement pipe is arranged on the water seal tank, a water supplement valve is arranged on the water supplement pipe, and the water supplement valve is electrically connected with the liquid level gauge.

[0014] By adopting the technical scheme, the liquid level meter can detect the liquid level height in the water seal tank in real time, when the liquid level height is less than the set minimum value, the liquid level meter sends an electric signal, the water supplement valve opens after receiving the electric signal, the water supplement pipe supplements water into the water seal tank, until the liquid level height reaches the set maximum value, the liquid level meter sends an electric signal, the water supplement valve closes after receiving the electric signal, and the water seal tank completes a water supplement process, thereby preventing the water seal tank from being out of water and causing the water seal function to fail.

[0015] Optionally, the bottom of the high tank is provided with a weighing meter, and the feeding valve is electrically connected with the weighing meter.

[0016] By adopting the technical scheme, the weighing meter can detect the weight of carbon disulfide in the high tank in real time, when the weight of the transferred carbon disulfide reaches the set target weight, the weighing meter sends an electric signal, the feeding valve closes after receiving the electric signal, and the transfer of carbon disulfide stops, thereby realizing accurate feeding of carbon disulfide.

[0017] Optionally, the high tank is provided with a first interface meter, the overflow tank is provided with a second interface meter, the bottom of the overflow tank is provided with a return pipe, the return pipe is provided with a return valve, the return pipe is communicated with a storage tank, the storage tank is provided with a water discharge pipe, the water discharge pipe is provided with a water discharge valve, the first interface meter, the feeding valve and the water discharge valve are electrically connected, and the first interface meter, the feeding valve and the water discharge valve are electrically connected.

[0018] By adopting the technical scheme, the first interface meter can monitor the position of the interface between carbon disulfide and the upper water seal in the high tank in real time, the second interface meter can monitor the position of the interface between carbon disulfide and the upper water seal in the overflow tank in real time, when the transferred carbon disulfide is excessive or there is remaining carbon disulfide after feeding, the first interface meter and the second interface meter send electric signals, the water discharge valve and the respective feeding valve or return valve receive the electric signals and open, the storage tank can discharge water outward, the water pressure in the storage tank decreases, and the remaining carbon disulfide in the high tank or the overflow tank returns to the storage tank for storage under the action of the liquid level difference, thereby achieving the purpose of recycling and storing the excessive carbon disulfide.

[0019] Optionally, the high tank and the overflow tank are sleeved with the same outer shell, a cooling cavity is formed between the inner wall of the outer shell and the outer wall of the high tank and the overflow tank, and the cooling cavity is provided with a cooling member.

[0020] By adopting the technical scheme, the carbon disulfide can be maintained in a low-temperature environment during the transfer process, and the possibility of vaporization of the carbon disulfide during the transfer process is reduced.

[0021] Optionally, the cooling member comprises a liquid cooling pipe, the liquid cooling pipe is arranged in an "8" shape on the outer sidewall of the high tank and the overflow tank, one end of the liquid cooling pipe is provided with an inlet end, and the other end is provided with an outlet end, and a fluid cooling source flows in the liquid cooling pipe.

[0022] By adopting the above technical scheme, the liquid cooling pipe is arranged around the high tank and the overflow tank, and is most densely arranged between the gap between the overflow tank and the high tank, so that the heat exchange efficiency of the liquid cooling pipe on the overflow tank and the high tank can be effectively improved.

[0023] Optionally, the nitrogen source comprises a liquid nitrogen bottle and a vaporizer, the input end of the vaporizer is in communication with the liquid nitrogen bottle, the output end is provided with a cold exchange pipe, the vaporizer and the overflow tank are provided with a recovery water tank, the cold exchange pipe passes through the recovery water tank, one end of the cold exchange pipe away from the vaporizer is in communication with the second air hole, and the inlet end is in communication with the recovery water tank.

[0024] By adopting the above technical scheme, the liquid nitrogen in the liquid nitrogen bottle is converted into nitrogen gas through the vaporizer, and nitrogen gas can be supplied into the high tank and the overflow pipe. In this process, the liquid nitrogen absorbs heat during vaporization, and the ambient temperature decreases during vaporization. The cold exchange pipe can recover the cold energy released from the output end of the vaporizer in this process, and use the cold energy to produce a refrigeration effect on the recovery water tank. Water can be injected into the recovery water tank to produce cooling water, which can be used as the source of the fluid cooling source in the liquid cooling pipe. The waste cold energy is recycled, which has the significance of energy saving and green environmental protection.

[0025] In a second aspect, the application also provides a carbon disulfide high tank water seal production process, which adopts the following technical scheme: a carbon disulfide high tank water seal production process comprises the following steps:

[0026] S1: using nitrogen to replace the air in the high tank discharge pipe;

[0027] S2: using water to discharge the air in the high tank inlet pipe;

[0028] S3: adding a water seal layer with a certain height in the high tank and the overflow tank connected with the high tank;

[0029] S4: using nitrogen to completely replace the air in the high tank and the overflow tank, and maintaining nitrogen sealing;

[0030] S5: using water pressure to press carbon disulfide from the storage tank into the high tank until the carbon disulfide in the high tank reaches the required drop amount.

[0031] By adopting the technical scheme, before the carbon disulfide is transported, the air in the high tank and the discharge pipe and the feed pipe has been replaced by nitrogen, reducing the possibility of contact between the carbon disulfide and oxygen in the air; during the carbon disulfide transportation process, the carbon disulfide is always in a water-sealed state, reducing the possibility of leakage and volatile dispersion of the carbon disulfide, thereby reducing the possibility of combustion and explosion of the carbon disulfide and reducing the safety hazard.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. By setting the water pressure pipe and the nitrogen source, before the carbon disulfide is transported, the air in the high tank and the discharge pipe and the feed pipe has been replaced by nitrogen, reducing the possibility of contact between the carbon disulfide and oxygen in the air; by injecting water into the storage tank through the water pressure pipe, the carbon disulfide in the storage tank is pressed into the high tank by the water pressure, realizing the temporary storage of the carbon disulfide, and during this process, the carbon disulfide is always in a water-sealed state, reducing the possibility of leakage and volatile dispersion of the carbon disulfide, thereby reducing the possibility of combustion and explosion of the carbon disulfide and reducing the safety hazard;

[0034] 2. By setting the liquid level gauge and the water replenishing valve, the liquid level gauge can detect the liquid level in the water-sealed tank in real time, when the liquid level is less than the set minimum value, the liquid level gauge sends an electric signal, the water replenishing valve opens after receiving the electric signal, the water replenishing pipe replenishes water into the water-sealed tank, until the liquid level reaches the set maximum value, the liquid level gauge sends an electric signal, the water replenishing valve closes after receiving the electric signal, completing the water replenishing process of the water-sealed tank, preventing the water-sealed tank from being out of water and causing the water sealing function to fail;

[0035] 3. By setting the nitrogen source, the cold exchange pipe and the recovery water tank, the liquid nitrogen in the liquid nitrogen bottle is converted into nitrogen gas through the vaporizer, which can supply nitrogen gas to the high tank and the overflow pipe. During this process, the liquid nitrogen absorbs heat during vaporization, and the ambient temperature decreases during vaporization. The cold exchange pipe can recover the cold energy released from the output end of the vaporizer during this process, and use this part of the cold energy to produce a refrigeration effect on the recovery water tank. Water can be injected into the recovery water tank to produce cooling water, which can be used as the source of the fluid cold source in the liquid cooling pipe, realizing the recycling of waste cold energy, which has the significance of energy saving and green environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0037] Figure 2 is a schematic diagram of the structure of the nitrogen source in the embodiment of the present application.

[0038] Figure 3 is a sectional view of the internal structure of the outer shell in the embodiment of the present application.

[0039] Figure 4 is a structural schematic diagram of a liquid cooling pipe in the embodiment of the present application.

[0040] Figure 5 is a sectional view of the internal structure of a water recovery tank in the embodiment of the present application.

[0041] Legend: 1, storage tank; 11, water pressure pipe; 12, water discharge pipe; 121, water discharge valve; 2, high tank; 21, feed pipe; 211, feed valve; 212, water inlet pipe; 2121, water inlet valve; 22, discharge pipe; 221, discharge valve; 23, first water inlet; 24, first air vent; 25, weighing scale; 26, overflow pipe; 27, first interface meter; 3, nitrogen source; 31, liquid nitrogen bottle; 32, vaporizer; 321, cold exchange pipe; 4, overflow tank; 41, balance pipe; 42, second water inlet; 43, second air vent; 44, first air outlet; 441, air discharge pipe; 45, second interface meter; 46, return pipe; 461, return valve; 5, water seal tank; 51, second air outlet; 52, liquid level meter; 53, water supplement pipe; 531, water supplement valve; 6, tail gas treatment system; 7, outer shell; 71, cooling cavity; 72, cooling element; 721, liquid cooling pipe; 7211, liquid inlet end; 7212, liquid outlet end; 8, water recovery tank. DETAILED DESCRIPTION

[0042] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The present application will be further described in detail.

[0043] In a first aspect, the present application discloses a carbon disulfide high tank water seal device.

[0044] Reference will be made to Figure 1 A carbon disulfide high tank water seal device includes a storage tank 1 buried underground and a high tank 2 arranged on the ground. The high tank 2 is connected with a feed pipe 21 and a discharge pipe 22, the feed pipe 21 is provided with a feed valve 211, the discharge pipe 22 is provided with a discharge valve 221, the feed pipe 21 is connected with the bottom of the storage tank 1, the storage tank 1 is connected with a water pressure pipe 11, the high tank 2 is provided with a first water inlet 23 and a first air vent 24, and the high tank 2 is connected with a nitrogen source 3. The feed pipe 21 is connected with a water inlet pipe 212, the water inlet pipe 212 is arranged between the storage tank 1 and the feed valve 211, and the water inlet pipe 212 is provided with a water inlet valve 2121.

[0045] When the carbon disulfide is stored in the high tank 2, firstly, the discharge valve 221 is opened, nitrogen is introduced into the high tank 2 by the nitrogen source 3, so that the air in the discharge pipe 22 is replaced; secondly, the water inlet valve 2121 and the feed valve 211 are opened, the air in the feed pipe 21 is discharged by introducing water into the water inlet pipe 212; then, after a certain height of water seal layer is added to the high tank 2 through the first water inlet 23, the first water inlet 23 is closed; then, nitrogen is introduced into the high tank 2 by the nitrogen source 3, so that the air in the high tank 2 is completely replaced, and the nitrogen seal is maintained; finally, water is injected into the storage tank 1 through the water pressure pipe, and the carbon disulfide in the storage tank 1 is pressed into the high tank 2 by the water pressure, so that the carbon disulfide is transported and temporarily stored. Before the carbon disulfide is transported, the air in the high tank 2, the discharge pipe 22 and the feed pipe 21 has been replaced by nitrogen, which reduces the possibility of contact between carbon disulfide and oxygen in the air; during the transportation of carbon disulfide, the carbon disulfide is always in a water seal state, which reduces the possibility of leakage and volatilization of carbon disulfide, thereby reducing the possibility of combustion and explosion of carbon disulfide and reducing the safety hazard.

[0046] With reference to Figure 1 The bottom of the high tank 2 is provided with a weighing scale 25, and the feed valve 211 is electrically connected with the weighing scale 25. By subtracting the weight of the water used for water seal from the total weight of the liquid in the high tank 2, the weight of the carbon disulfide in the high tank 2 can be obtained, so that the weight of the carbon disulfide in the high tank 2 can be detected in real time by the weighing scale 25. When the transportation weight of the carbon disulfide reaches the set target, the weighing scale 25 sends an electric signal, and the feed valve 211 is closed after receiving the electric signal, so that the transportation of the carbon disulfide can be stopped.

[0047] With reference to Figure 1To reduce the possibility of the feeding process of carbon disulfide being unable to terminate in time after the weight of carbon disulfide in the high tank 2 reaches the set value due to a malfunction of the weighing scale 25 or the feeding valve 211, and thus the possibility of the high tank 2 being blown up due to the increase of the internal pressure of the high tank 2, the side wall of the high tank 2 is connected with an overflow pipe 26, the end of the overflow pipe 26 away from the high tank 2 is connected with an overflow tank 4, the first vent 24 is connected with a balance pipe 41, the end of the balance pipe 41 away from the first vent 24 is connected with the overflow tank 4, the overflow tank 4 is provided with a second water inlet 42 and a second vent 43, the second vent 43 is connected with the nitrogen source 3, and the overflow tank 4 is provided with a first exhaust port 44. In this way, the carbon disulfide overflowing from the high tank 2 can fall into the overflow tank 4, and since the overflow tank 4 is connected with the high tank 2, nitrogen gas needs to be introduced into the overflow tank 4 by using the nitrogen source 3, the nitrogen gas passes through the overflow tank 4 and the high tank 2 in turn, and thus the air in the overflow pipe 26 is discharged, and after a certain height of water seal layer is added into the overflow tank 4 through the second water inlet 42, the second water inlet 42 is closed; then nitrogen gas is continuously output into the overflow tank 4 by using the nitrogen source 3, until the air in the overflow tank 4 and the high tank 2 is completely replaced by nitrogen gas, so as to reduce the possibility of the carbon disulfide contacting with the oxygen in the air in the flowing route, and improve the safety. The internal pressure of the overflow tank 4 can be kept relatively stable and balanced through the first exhaust port 44, which is beneficial to the flow of the fluid therein; the high tank 2 and the overflow tank 4 are connected through the balance pipe 41, so that the internal pressures of the two are kept stable and balanced, and the situation of the internal pressure of the high tank 2 being too large is reduced.

[0048] With reference to Figure 1 To avoid the situation of the external air entering into the overflow tank 4 through the first exhaust port 44, the first exhaust port 44 is connected with an exhaust pipe 441, the exhaust pipe 441 is connected with a water seal tank 5, the end of the exhaust pipe 441 away from the first exhaust port 44 extends below the liquid surface of the water seal tank 5, and to avoid the water in the water seal tank 5 flowing back to the overflow tank 4, the top end of the water seal tank 5 is lower than the bottom end of the first exhaust port 44, and the water seal tank 5 is provided with a second exhaust port 51. The air or nitrogen gas discharged from the first exhaust port 44 enters into the water seal tank 5 through the exhaust pipe 441, and forms bubbles rising, after the bubbles break, the air or nitrogen gas enters into the upper gas in the water seal tank 5, and is finally discharged from the second exhaust port 51. Since the carbon disulfide has strong volatility, the discharged gas contains a small amount of carbon disulfide molecules, to reduce the harm of this part of carbon disulfide, the second exhaust port 51 is connected with a tail gas treatment system 6 for purifying tail gas, and the tail gas treatment system 6 can adsorb or absorb the carbon disulfide mixed in the gas, so as to realize the removal of the carbon disulfide.

[0049] With reference to Figure 1The water seal tank 5 is provided with a liquid level gauge 52, and a water supplement pipe 53 is communicated with the water seal tank 5, and a water supplement valve 531 is arranged on the water supplement pipe 53 and electrically connected with the liquid level gauge 52. The liquid level gauge 52 can detect the liquid level in the water seal tank 5 in real time. Since the water seal tank 5 is communicated with the tail gas treatment system 6, the water in the water seal tank 5 is in a state of continuous evaporation, and therefore the liquid level in the water seal tank 5 gradually decreases without external water supply. When the liquid level is less than a set minimum value, the liquid level gauge 52 sends an electric signal, and the water supplement valve 531 is opened after receiving the electric signal, and the water supplement pipe 53 supplements water into the water seal tank 5 until the liquid level reaches a set maximum value, the liquid level gauge 52 sends an electric signal, and the water supplement valve 531 is closed after receiving the electric signal, and the water supplement process of the water seal tank 5 is completed.

[0050] With reference to Figure 1 The first interface gauge 27 is arranged in the high tank 2, the second interface gauge 45 is arranged in the overflow tank 4, the bottom of the overflow tank 4 is communicated with a return pipe 46, the return pipe 46 is provided with a return valve 461, the return pipe 46 is communicated with the storage tank 1, the top of the storage tank 1 is communicated with a water discharge pipe 12, the water discharge pipe 12 is provided with a water discharge valve 121, the first interface gauge 27, the discharge valve and the water discharge valve 121 are electrically connected, and the second interface gauge 45, the return valve 461 and the water discharge valve 121 are electrically connected. The first interface gauge 27 can monitor the position of the interface between the carbon disulfide and the upper water seal in the high tank 2 in real time, and the second interface gauge 45 can monitor the position of the interface between the carbon disulfide and the upper water seal in the overflow tank 4 in real time. When the carbon disulfide is excessively pressed or there is residual carbon disulfide after the feeding is completed, the first interface gauge 27 and the second interface gauge 45 send electric signals, the water discharge valve 121 and the respective corresponding discharge valve or return valve 461 are opened after receiving the electric signals, the storage tank 1 can discharge water, the water pressure in the storage tank 1 is reduced, and the residual carbon disulfide in the high tank 2 or the overflow tank 4 returns to the storage tank 1 for storage under the action of the liquid level difference.

[0051] With reference to Figure 2 , Figure 3 and Figure 4In order to maintain a low temperature environment for carbon disulfide during transportation, reduce the possibility of carbon disulfide vaporization during transportation, the outer side of the high tank 2 and the overflow tank 4 is sleeved with the same outer shell 7, the inner wall of the outer shell 7 and the outer wall of the high tank 2 and the overflow tank 4 form a cooling cavity 71, the cooling cavity 71 is provided with a cooling member 72, the cooling member 72 includes a liquid cooling pipe 721, the liquid cooling pipe 721 is arranged in the shape of "8" on the outer side wall of the high tank 2 and the overflow tank 4, one end of the liquid cooling pipe 721 is provided with a liquid inlet end 7211, the other end is provided with a liquid outlet end 7212, and the liquid cooling pipe 721 is circulated with a fluid cold source. In this way, the liquid cooling pipe 721 is distributed around the high tank 2 and the overflow tank 4, and is most densely arranged between the gap between the overflow tank 4 and the high tank 2. Since the heat exchange pipes distributed between the overflow tank 4 and the high tank 2 can simultaneously exchange heat with the overflow tank 4 and the high tank 2, the liquid cooling pipe 721 arranged in the above-mentioned "8" shape can effectively improve the heat exchange efficiency of the liquid cooling pipe 721 to the overflow tank 4 and the high tank 2.

[0052] Referring to Figure 2 , Figure 3 and Figure 4 , the nitrogen source 3 includes a liquid nitrogen bottle 31 and a vaporizer 32, the input end of the vaporizer 32 is communicated with the liquid nitrogen bottle 31, the output end is communicated with a cold exchange pipe 321, the vaporizer 32 is provided with a recovery water tank 8 between the overflow tank 4, the cold exchange pipe 321 passes through the recovery water tank 8 and the part of the cold exchange pipe 321 in the recovery water tank 8 is arranged in a serpentine shape, the end of the cold exchange pipe 321 away from the vaporizer 32 is communicated with the second air hole, and the liquid inlet end 7211 is communicated with the recovery water tank 8. The liquid nitrogen in the liquid nitrogen bottle 31 is converted into nitrogen gas through the vaporizer 32, which can supply nitrogen gas to the high tank 2 and the overflow pipe 26. In this process, the liquid nitrogen vaporization absorbs heat, the ambient temperature of the vaporization path decreases, and the cold exchange pipe 321 can recover the cold energy released from the output end of the vaporizer 32 in this process, and use this part of the cold energy to produce a refrigeration effect on the recovery water tank 8, and can produce cooling water by injecting water into the recovery water tank 8, which can be used as the source of the fluid cold source in the liquid cooling pipe 721, realizes the recycling of waste cold energy, and has the significance of energy saving and green environmental protection.

[0053] The implementation principle of the carbon disulfide high tank water seal device is as follows: when the carbon disulfide is transferred to the high tank 2, first, the discharge valve 221 is opened, nitrogen gas is introduced into the high tank 2 by using the nitrogen source 3, so that the air in the discharge pipe 22 is replaced; secondly, the water inlet valve 2121 and the feed valve 211 are opened, and the air in the feed pipe 21 is discharged by introducing water into the water inlet pipe 212; then, after a certain height of the water seal layer is added to the high tank 2 through the first water inlet 23, the first water inlet 23 is closed; nitrogen gas is introduced into the high tank 2 by using the nitrogen source 3, so that the air in the high tank 2 is completely replaced, and nitrogen sealing is maintained; finally, water is injected into the storage tank 1 through the water pressure pipe, and the carbon disulfide in the storage tank 1 is pressed into the high tank 2 by using the water pressure, so that the transfer and temporary storage of the carbon disulfide are realized. Before the carbon disulfide is transferred, the air in the high tank 2 and the discharge pipe 22 and the feed pipe 21 has been replaced by nitrogen, so that the possibility of contact between the carbon disulfide and the oxygen in the air is reduced; during the transfer of the carbon disulfide, the carbon disulfide is always in a water sealed state, so that the possibility of leakage and volatilization of the carbon disulfide is reduced, thereby reducing the possibility of combustion and explosion of the carbon disulfide and reducing the safety hazard.

[0054] In a second aspect, the application also discloses a carbon disulfide high tank water seal production process.

[0055] Reference Figure 1 The carbon disulfide high tank water seal production process comprises the following steps.

[0056] S1: air in a discharge pipe 22 of a high tank 2 is replaced by using nitrogen;

[0057] S2: air in a feed pipe 21 of the high tank 2 is discharged by using water;

[0058] S3: a certain height of a water seal layer is added to the high tank 2 and an overflow tank 4 connected with the high tank 2;

[0059] S4: air in the high tank 2 and the overflow tank 4 is completely replaced by using nitrogen, and nitrogen sealing is maintained;

[0060] S5: carbon disulfide is pressed into the high tank 2 from a storage tank 1 by using water pressure, and weight change of the high tank 2 is monitored in real time, and when the weight reaches a set value required for dropwise addition, the feeding of the carbon disulfide is stopped;

[0061] S6: position change of a carbon disulfide and an upper water seal layer interface in the high tank 2 and the overflow tank 4 is monitored in real time, and after the dropwise addition of the carbon disulfide is completed, the remaining carbon disulfide in the high tank 2 and the overflow tank 4 is returned to the storage tank 1 for continuous storage; and S7: the high tank 2, the overflow tank 4 and the pipeline through which the carbon disulfide passes in steps S5 and S6 are washed by using water, so that there is no residual carbon disulfide in the high tank 2, the overflow tank 4 and the pipeline.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A carbon disulfide elevated tank water seal apparatus, characterized by: The utility model provides a kind of water storage tank, including storage tank (1) and high tank (2), the bottom end of the high tank (2) is higher than the top end of storage tank (1), the high tank (2) is equipped with feed pipe (21) and discharge pipe (22), the feed pipe (21) is equipped with feed valve (211), the discharge pipe (22) is equipped with discharge valve (221), the feed pipe (21) is communicated with the bottom of storage tank (1), the storage tank (1) is equipped with water pressure pipe (11), the high tank (2) is equipped with first water inlet (23) and first air vent (24), the high tank (2) is communicated with nitrogen source (3), the feed pipe (21) is communicated with water inlet pipe (212), the water inlet pipe (212) is equipped between storage tank (1) and feed valve (211), the water inlet pipe (212) is equipped with water inlet valve (2121);The high tank (2) is equipped with overflow pipe (26), the end of the overflow pipe (26) away from the high tank (2) is equipped with overflow tank (4), the first air vent (24) is communicated with balance pipe (41), the end of the balance pipe (41) away from the first air vent (24) is communicated with overflow tank (4), the overflow tank (4) is equipped with second water inlet (42) and second air vent (43), the second air vent (43) is communicated with nitrogen source (3), the overflow tank (4) is equipped with first exhaust port (44);The high tank (2) is equipped with first interface gauge (27), the overflow tank (4) is equipped with second interface gauge (45), the bottom of the overflow tank (4) is equipped with return pipe (46), the return pipe (46) is equipped with return valve (461), the return pipe (46) is communicated with storage tank (1), the storage tank (1) is equipped with water discharge pipe (12), the water discharge pipe (12) is equipped with water discharge valve (121), the first interface gauge (27) and discharge valve and water discharge valve (121) are electrically connected, second interface gauge (45) and return valve (461) and water discharge valve (121) are electrically connected;The outside of the high tank (2) and overflow tank (4) is equipped with same outer shell (7), the inner wall of the outer shell (7) and the outer wall of the high tank (2) and overflow tank (4) form cooling cavity (71), the cooling cavity (71) is equipped with cooling piece (72);The cooling piece (72) includes liquid cooling pipe (721), the liquid cooling pipe (721) is arranged on the outer side wall of the high tank (2) and overflow tank (4) in the shape of "8", one end of the liquid cooling pipe (721) is equipped with liquid inlet end (7211), the other end is equipped with liquid outlet end (7212), the liquid cooling pipe (721) is communicated with fluid cooling source.The nitrogen source (3) comprises a liquid nitrogen bottle (31) and a vaporizer (32), the input end of the vaporizer (32) is communicated with the liquid nitrogen bottle (31), the output end is provided with a cold exchange pipe (321), the vaporizer (32) is provided with a recovery water tank (8) between the overflow tank (4), the cold exchange pipe (321) passes through the recovery water tank (8), the end of the cold exchange pipe (321) away from the vaporizer (32) is communicated with the second air vent (43), and the liquid inlet end (7211) is communicated with the recovery water tank (8); air in the discharge pipe (22) of the high tank (2) is replaced by nitrogen; air in the feed pipe (21) of the high tank (2) is discharged by water; a certain height of water seal layer is added in the high tank (2) and the overflow tank (4) communicated with the high tank (2).

2. A carbon disulfide elevated tank water seal apparatus according to claim 1, wherein: The first exhaust port (44) is communicated with an exhaust pipe (441), the exhaust pipe (441) is communicated with a water seal tank (5), one end of the exhaust pipe (441) away from the first exhaust port (44) extends below the liquid level of the water seal tank (5), the top end of the water seal tank (5) is lower than the bottom end of the first exhaust port (44), a second exhaust port (51) is arranged on the water seal tank (5), and the second exhaust port (51) is communicated with a tail gas treatment system (6) for purifying tail gas.

3. A carbon disulfide elevated tank water seal apparatus according to claim 2, wherein: A liquid level gauge (52) is arranged in the water seal tank (5), a water supplement pipe (53) is arranged on the water seal tank (5), a water supplement valve (531) is arranged on the water supplement pipe (53), and the water supplement valve (531) is electrically connected with the liquid level gauge (52).

4. A carbon disulfide elevated tank water seal apparatus according to claim 1, wherein: The bottom of the high tank (2) is provided with a weighing meter (25), and the feeding valve (211) is electrically connected with the weighing meter (25).

5. A process for producing a carbon disulfide high tank water seal apparatus according to any one of claims 2 to 4, characterized by, The method comprises the following steps: S1: air in the discharge pipe (22) of the high tank (2) is replaced by nitrogen; S2: air in the feeding pipe (21) of the high tank (2) is discharged by water; S3: a water seal layer with a certain height is added in the high tank (2) and the overflow tank (4) communicated with the high tank (2); S4: air in the high tank (2) and the overflow tank (4) is completely replaced by nitrogen, and nitrogen sealing is maintained; S5: carbon disulfide is pressed from the storage tank (1) to the high tank (2) by water pressure until carbon disulfide in the high tank (2) reaches the required drop adding amount.

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