A water diversion device

Abstract

The utility model discloses a kind of water distribution devices, including at least two mutually series-connected vacuum pumps;Each The vacuum pump is connected with heat exchanger, the lower portion of heat exchanger is connected with liquid storage cylinder;Water distribution jar, the water distribution jar is connected with the liquid storage cylinder;Conveying pump, the conveying pump is connected with the water distribution jar, the conveying pump is used to discharge liquid in water distribution jar.The utility model constructs negative pressure environment by multiple series-connected vacuum pumps, gradually to the water in mixed gas and chloromethane gas is effectively separated, reduce the chloromethane gas content in water, simultaneously by the use of remote control entire device, can avoid human body and the contact of the person containing chloromethane gas, effectively improve security.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical equipment, specifically to a water separation device. Background Technology

[0002] With the rapid development of the modern chemical industry and the continuous improvement of automation systems, the production efficiency of the chemical industry has been greatly improved, while production costs have been reduced. The construction of automation systems has made a significant contribution to the development of the chemical industry. Replacing manual operation with automated instrumentation systems not only reduces labor costs but also avoids close contact between hazardous chemicals and the human body, reducing the harm caused by hazardous chemicals to human health.

[0003] Chloromethane is a colorless, flammable gas with a slightly sweet odor. Inhalation of chloromethane can have anesthetic and toxic effects. Therefore, in the field of fine chemical production, equipment is constantly being optimized to avoid direct contact between humans and chloromethane gas and to reduce production costs.

[0004] In the production of some chemical products, the mixed gas contains water, a small amount of hydrogen chloride, and chloromethane gas, which requires the use of a water separator to separate the water. However, in the current process of using water separators, some chloromethane gas remains in the separated water, which can cause harm to the human body and poses a safety risk. At the same time, chloromethane is also prone to forming explosive mixtures with air, which increases the production risk. Utility Model Content

[0005] The purpose of this utility model is to provide a water distribution device in order to solve the above problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A water distribution device includes at least two vacuum pumps connected in series;

[0008] Each of the vacuum pumps is connected to a heat exchanger, and a liquid storage tank is connected below the heat exchanger.

[0009] The water distribution tank is connected to the liquid storage tank;

[0010] A delivery pump is connected to the water distribution tank and is used to discharge liquid from the water distribution tank.

[0011] Preferably, a sealing tank is installed on the delivery pipeline where the delivery pump is located.

[0012] Preferably, a gas phase balance pipe is connected between the delivery pipeline and the water distribution tank.

[0013] Preferably, the vacuum pump includes a first vacuum pump, a second vacuum pump, and a third vacuum pump, wherein the outlet of the first vacuum pump is connected to the inlet of the second vacuum pump, the outlet of the second vacuum pump is connected to the inlet of the third vacuum pump, and the outlet of the third vacuum pump is in communication with the external environment.

[0014] Preferably, a first heat exchanger is connected below the first vacuum pump, a first liquid storage tank is connected to the outlet of the first heat exchanger, the first liquid storage tank is connected to a first water distribution tank, and the first water distribution tank is connected to the delivery pump.

[0015] Preferably, a second heat exchanger is connected below the second vacuum pump, and a second liquid storage tank is connected to the outlet of the second heat exchanger. The second liquid storage tank is connected to the second water distribution tank, and the second water distribution tank is connected to the first water distribution tank.

[0016] Preferably, a third heat exchanger is connected below the third vacuum pump, and a third liquid storage tank is connected to the outlet of the third heat exchanger. The third liquid storage tank is connected to the third water distribution tank, and the third water distribution tank is connected to the first water distribution tank.

[0017] Preferably, the first water distribution tank, the second water distribution tank, and the third water distribution tank are all equipped with an automatic water distribution instrument control system.

[0018] Preferably, the automatic water distribution instrument control system includes at least a level gauge.

[0019] Preferably, the volume of the third water distribution tank and the second water distribution tank is smaller than the volume of the first water distribution tank.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention creates a negative pressure environment by using multiple vacuum pumps connected in series to gradually and effectively separate water and chloromethane gas in a mixed gas, reducing the chloromethane content in the water. At the same time, by remotely controlling the use of the entire device, it can avoid human contact with people containing chloromethane gas, effectively improving safety.

[0022] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the present invention.

[0024] Reference numerals in the attached drawings: 1. First vacuum pump; 2. Second vacuum pump; 3. Third vacuum pump; 4. First heat exchanger; 5. Second heat exchanger; 6. Third heat exchanger; 7. First liquid storage tank; 8. Second liquid storage tank; 9. Third liquid storage tank; 10. First water distribution tank; 11. Second water distribution tank; 12. Third water distribution tank; 13. Transfer pump; 14. Sealing tank; 15. Gas phase balance pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, in one embodiment, a water separation device includes at least two vacuum pumps connected in series. By connecting multiple vacuum pumps in series, the vacuuming power can be effectively increased, significantly improving the vacuum level of the entire system and thus improving production efficiency. Simultaneously, the vacuum pump closer to the gas inlet can have slightly higher power, while subsequent vacuum pumps can have slightly lower power, to ensure sufficient gas is drawn in during the initial stage.

[0027] Each of the vacuum pumps is connected to a heat exchanger, with a liquid storage tank connected below the heat exchanger. Gas enters the heat exchanger after being evacuated. The heat exchanger has an inlet and outlet for cooling medium to cool the device and prevent excessive system temperature from affecting normal operation. Simultaneously, after the gas enters the heat exchanger, the liquid phase is cooled into a liquid, and the gas phase exits from the outlet and enters the series-connected vacuum pumps.

[0028] A water separator tank is connected to the liquid storage tank. The liquid phase entering the storage tank is collected in the water separator tank for subsequent discharge. The water separator tank and the vacuum pump can be the same or different, depending on the actual production needs.

[0029] A transfer pump 13 is connected to the water separator tank. The transfer pump 13 is used to discharge the liquid in the water separator tank, thereby achieving the separation of chloromethane and water. Meanwhile, the vacuum pump, heat exchanger, liquid storage tank, and water separator tank in this application can all be remotely controlled for switching on and off, meaning the entire device can be remotely controlled throughout the process. This avoids the separation of small amounts of dissolved chloromethane gas from coming into contact with the human body, reducing harm to the human body and hazards to the production environment.

[0030] In one embodiment, a sealing tank 14 is provided on the delivery pipeline where the delivery pump 13 is located. By providing the sealing tank 14, the vacuum environment of the entire device can be effectively prevented from being damaged. Furthermore, a gas phase balance pipe 15 is connected between the delivery pipeline and the water separator. The gas phase balance pipe 15 balances the pressure at the inlet and outlet of the delivery pump 13 in the negative pressure system, ensuring that the liquid can be smoothly discharged to the wastewater pool at normal pressure, while preventing the system vacuum from being damaged, and ensuring that the water separation process is continuous, stable and safe.

[0031] In one embodiment, the vacuum pump includes a first vacuum pump 1, a second vacuum pump 2, and a third vacuum pump 3. The outlet of the first vacuum pump 1 is connected to the inlet of the second vacuum pump 2, the outlet of the second vacuum pump 2 is connected to the inlet of the third vacuum pump 3, and the outlet of the third vacuum pump 3 is in communication with the external environment. A first heat exchanger 4 is connected below the first vacuum pump 1, and a first liquid storage tank 7 is connected to the outlet of the first heat exchanger 4. The first liquid storage tank 7 is connected to a first water distribution tank 10, and the first water distribution tank 10 is connected to the transfer pump 13. A second heat exchanger 5 is connected below the second vacuum pump 2, and a second liquid storage tank 8 is connected to the outlet of the second heat exchanger 5. The second liquid storage tank 8 is connected to the second water distribution tank 11, which is connected to the first water distribution tank 10. A third heat exchanger 6 is connected below the third vacuum pump 3. The outlet of the third heat exchanger 6 is connected to the third liquid storage tank 9, which is connected to the third water distribution tank 12. The third water distribution tank 12 is connected to the first water distribution tank 10. For example, in the production process of dimethyl phosphite, due to its high boiling point, a negative pressure system is usually used. Before the reaction begins, the first vacuum pump 1 is started to evacuate the system. When the pressure reaches a specified value, the second vacuum pump 2 and the third vacuum pump 3 are started sequentially. Only when the system vacuum reaches a specified value can the feed be introduced. The byproducts generated during the reaction are chloromethane gas and hydrogen chloride gas. After passing through the acid absorber and alkali absorber, they enter the inlet of the first vacuum pump 1 and are then cooled by the first heat exchanger 4. The cooling medium enters from the inlet of the first heat exchanger 4 and flows out from the outlet. The gas phase, carrying some water vapor and acidic gases, is cooled to the first storage tank 7 and then flows to the first water separator 10. The chloromethane gas, after cooling, enters the second vacuum pump 2. The cooled condensate flows into the liquid seal tank. When the liquid seal tank reaches the set level via an automatic control system, the discharge valve automatically opens, allowing the fluid to flow into the water separator. The gas phase enters through the inlet of the third vacuum pump 3 and, in the same manner, delivers the condensate to the second water separator 11. When the liquid level in the second water separator 11 reaches the set level via an automatic control system, the discharge valve automatically opens, allowing the fluid to flow into the third water separator 12. The cooled gas phase exits through the exhaust port. The water separator also has a liquid level control system; when the liquid level reaches the set value, the delivery pump 13 and discharge valve automatically start, and the fluid, after passing through the liquid seal tank, is sent to the wastewater pool.

[0032] Meanwhile, a gas phase balancing pipe 15 is installed in the delivery pipeline to facilitate pressure balancing before and after delivery, and to facilitate the delivery of liquid outside the boundary. The height between this delivery pipeline and the liquid seal tank is set as high as possible to prevent vacuum leakage from affecting operation. Furthermore, the delivery height between the first water distribution tank 10 and the liquid seal tank is not less than 10m, which also effectively prevents vacuum leakage.

[0033] In one embodiment, the automatic water distribution instrument control system includes at least a level gauge. The level gauge can send a signal to the control system when the liquid in the water distribution tank reaches a certain level, causing the water distribution tank to be opened. As this is a mature existing technology, it will not be described in detail here.

[0034] In one embodiment, the volumes of the second water distribution tank 11 and the third water distribution tank 12 are smaller than those of the first water distribution tank 10. The gas entering from the first vacuum pump 1 has a higher moisture content, but after successive water separation, the moisture content can be effectively reduced. Therefore, adaptively reducing the volume and size of the water distribution tanks can reduce cost and space occupation.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water distribution device, characterized in that, Includes at least two vacuum pumps connected in series; Each of the vacuum pumps is connected to a heat exchanger, and a liquid storage tank is connected below the heat exchanger. The water distribution tank is connected to the liquid storage tank; A delivery pump is connected to the water distribution tank and is used to discharge liquid from the water distribution tank.

2. The water separation device according to claim 1, characterized in that, A sealing tank is installed on the delivery pipeline where the delivery pump is located.

3. The water separation device according to claim 2, characterized in that, A gas phase balance pipe is connected between the delivery pipeline and the water distribution tank.

4. The water separation device according to claim 1, characterized in that, The vacuum pump includes a first vacuum pump, a second vacuum pump, and a third vacuum pump, wherein the outlet of the first vacuum pump is connected to the inlet of the second vacuum pump, the outlet of the second vacuum pump is connected to the inlet of the third vacuum pump, and the outlet of the third vacuum pump is connected to the external environment.

5. The water separation device according to claim 4, characterized in that, A first heat exchanger is connected below the first vacuum pump, and a first liquid storage tank is connected to the outlet of the first heat exchanger. The first liquid storage tank is connected to a first water distribution tank, and the first water distribution tank is connected to the delivery pump.

6. The water separation device according to claim 5, characterized in that, A second heat exchanger is connected below the second vacuum pump, and a second liquid storage tank is connected to the outlet of the second heat exchanger. The second liquid storage tank is connected to a second water distribution tank, and the second water distribution tank is connected to the first water distribution tank.

7. The water separation device according to claim 6, characterized in that, A third heat exchanger is connected below the third vacuum pump, and a third liquid storage tank is connected to the outlet of the third heat exchanger. The third liquid storage tank is connected to a third water distribution tank, and the third water distribution tank is connected to the first water distribution tank.

8. The water separation device according to claim 7, characterized in that, The first water distribution tank, the second water distribution tank, and the third water distribution tank are all equipped with an automatic water distribution instrument control system.

9. The water separation device according to claim 8, characterized in that, The automatic water distribution instrument control system includes at least a level gauge.

10. The water separation device according to claim 7, characterized in that, The volume of the third water distribution tank and the second water distribution tank is smaller than the volume of the first water distribution tank.

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