A waste liquid treatment apparatus

Abstract

The utility model provides a kind of waste liquid treatment equipment, including heating pool, the inner bottom of heating pool is fixedly installed with distilling jar, the inside of heater is provided with electric heating wire, the outer wall surface of heating pool is fixedly installed with vacuum pump, the output of vacuum pump is fixedly connected with first pipeline, the outer surface of first pipeline is installed with first valve, the upper surface of distilling jar is fixedly connected with flow guide pipe, the other end of flow guide pipe is fixedly connected with waste collection warehouse, the right side of waste collection warehouse is fixedly installed with discharge pipeline.The waste liquid treatment equipment provided by the utility model is reasonable in structure, does not need to consume coal and other non-renewable resources during use, by adopting water bath heating mode, the temperature during distillation can also be controlled, the cost of wastewater treatment is reduced, compared with incineration method, carbon dioxide emission is also reduced, which is more conducive to environmental protection.

Description

Technical Field

[0001] This utility model belongs to the field of waste liquid treatment technology, and more specifically, it relates to a waste liquid treatment device. Background Technology

[0002] The pollutants in acrylonitrile production wastewater are very complex, with a very high organic content. The wastewater typically contains acrylonitrile, acetonitrile, hydrogen cyanide, acrylamide, acrylic acid, acrolein, cyanopyridine, trans-butenedionitrile, succinic acid, maleimide, ammonia nitrogen, sulfates, and a large number of polymers. All of these substances have boiling points lower than that of water.

[0003] Existing acrylonitrile production wastewater is usually treated by incineration. Incineration is a method that oxidizes and decomposes high-concentration organic wastewater at high temperatures and releases the resulting harmless substances into the atmosphere. However, incineration requires a large amount of coal and other materials for heating, resulting in extremely high resource consumption. Coal is a non-renewable resource, and the large-scale use of coal will increase the cost of wastewater treatment. Summary of the Invention

[0004] The purpose of this invention is to provide a waste liquid treatment device that has the advantage of reducing wastewater treatment costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A waste liquid treatment device is provided, including a heating tank. A distillation tank is fixedly installed at the bottom inner part of the heating tank. A heater is fixedly installed at the bottom inner part of the heating tank, located outside the distillation tank. An electric heating wire is installed inside the heater. A vacuum pump is fixedly installed on the outer wall surface of the heating tank. A first pipe is fixedly connected to the output end of the vacuum pump. The end of the first pipe away from the vacuum pump extends into the interior of the distillation tank. A first valve is installed on the outer surface of the first pipe. A guide pipe is fixedly connected to the upper surface of the distillation tank. A waste collection chamber is fixedly connected to the other end of the guide pipe. The waste collection chamber is located on the right side of the heating tank. A discharge pipe is fixedly installed on the right side of the waste collection chamber. A condenser pipe is sleeved on the outer surface of the middle section of the guide pipe. An inlet is fixedly connected to the lower surface of the condenser pipe, and an outlet is fixedly connected to the upper surface of the condenser pipe.

[0006] Optionally, a reaction chamber is provided on the left side of the heating pool, and a second pipe is fixedly connected to the right side of the reaction chamber.

[0007] Optionally, a second valve is connected to the outer surface of the second pipe, and a filter chamber is fixedly connected to the other end of the second pipe, with the bottom of the filter chamber fixedly connected to the top of the distillation tank.

[0008] Optionally, a filter plate is fixedly installed inside the filter chamber, the filter plate is inclined downward, the upper plate of the filter plate has filter holes, and a door is movably installed on the outer surface of the filter chamber.

[0009] Optionally, the bottom of the filter chamber is provided with a through hole, and the filter chamber is connected to the distillation tank through the through hole.

[0010] Optionally, a third pipe is fixedly connected to the outer surface of the distillation tank, the end of the third pipe away from the distillation tank extends to the outside of the heating pool, and a wastewater collection chamber is fixedly connected to the end of the third pipe away from the distillation tank.

[0011] Optionally, the wastewater collection chamber is located on the right side of the heating pool, a third valve is connected to the outer surface of the third pipe, and a cover plate is installed on the top of the wastewater collection chamber.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model comprises a first valve, a condenser, a guide pipe, a vacuum pump, a distillation tank, a first valve, a second valve, a reaction chamber, a second pipe, a filter chamber, a third valve, a waste collection chamber, and a wastewater collection chamber. In operation, the first valve is first opened, and the condenser begins to operate, allowing cold water to flow in from the bottom and out from the top, continuously cooling the guide pipe. Next, the vacuum pump operates to remove the gas from the distillation tank. Then, the first valve is closed, and the second valve is opened, allowing the waste liquid in the reaction chamber to flow through the second pipe to the filter chamber, and then to the distillation tank. When the waste liquid inflow is sufficient, the second valve is closed, and the water in the heating tank is heated. When the water boils, substances such as acrylonitrile in the waste liquid turn into gas. The liquid flows into the guide tube, where it is cooled and converted into a liquid. It then flows into the waste collection bin through the guide tube. When no more liquid continues to flow into the waste collection bin from the guide tube, the third valve is opened to discharge the remaining wastewater in the distillation tank into the wastewater collection bin. At this point, the wastewater contains very little acrylonitrile and other substances, meeting the wastewater discharge requirements. Compared to existing wastewater treatment equipment, which uses incineration to treat wastewater, requiring a large amount of coal and other materials for heating, resulting in extremely high resource consumption, and considering that coal is a non-renewable resource, the large-scale use of coal will increase the cost of wastewater treatment. This wastewater treatment equipment uses distillation to separate acrylonitrile and other substances from water in the wastewater, consuming fewer resources and reducing the cost of wastewater treatment.

[0014] 2. This utility model sets up a heating pool and a distillation tank. During use, the water in the heating pool is used to heat the distillation tank, which avoids the excessive intensity and uncontrollability of direct heating and can stably heat the distillation tank.

[0015] 3. By incorporating a condenser tube, the water flowing through the condenser tube during use can circulate. Simultaneously, utilizing the condenser tube for cooling makes the cooling process more gentle. After cooling, the water can continue to flow into the condenser tube, saving costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the waste liquid treatment equipment provided in this embodiment of the utility model;

[0018] Figure 2 A front sectional view of the waste liquid treatment equipment provided in an embodiment of this utility model;

[0019] Figure 3 A side sectional view of the waste liquid treatment equipment provided in an embodiment of this utility model;

[0020] Figure 4 A schematic diagram of the filter screen structure of the waste liquid treatment equipment provided in this embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the condenser structure of the waste liquid treatment equipment provided in this embodiment of the utility model;

[0022] Figure 6 A cross-sectional view of the condenser structure of the waste liquid treatment equipment provided in this embodiment of the utility model.

[0023] In the diagram: 1. Heating tank; 2. Distillation tank; 3. Vacuum pump; 4. First pipe; 5. First valve; 6. Condenser; 7. Waste collection bin; 8. Guide pipe; 9. Reaction bin; 10. Second pipe; 11. Second valve; 12. Filter bin; 13. Filter plate; 14. Through hole; 15. Third pipe; 16. Wastewater collection bin; 17. Third valve. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Reference Figure 1-6 The waste liquid treatment equipment provided in this embodiment of the present invention will now be described. The waste liquid treatment equipment includes a heating tank 1, which is heated by a water bath. A distillation tank 2 is fixedly installed at the bottom inner wall of the heating tank 1. A heater is also fixedly installed at the bottom inner wall of the heating tank 1, located outside the distillation tank 2. An electric heating wire is installed inside the heater. A vacuum pump 3 is fixedly installed on the outer wall surface of the heating tank 1. A first pipe 4 is fixedly connected to the output end of the vacuum pump 3. The end of the first pipe 4 away from the vacuum pump 3 extends into the interior of the distillation tank 2. A first valve 5 is installed on the outer surface of the first pipe 4. The first valve 5 controls whether the vacuum pump 3 can extract the gas from the distillation tank 2. Acrylonitrile gas explodes upon contact with air at 25°C; therefore, the operation of the vacuum pump 3 before distillation can... Air is removed from the distillation tank 2. A guide pipe 8 is fixedly connected to the upper surface of the distillation tank 2, and a waste collection bin 7 is fixedly connected to the other end of the guide pipe 8. The waste collection bin 7 is located on the right side of the heating tank 1. A discharge pipe is fixedly installed on the right side of the waste collection bin 7, which can periodically discharge the waste in the waste collection bin 7. A condenser pipe 6 is sleeved on the outer surface of the middle section of the guide pipe 8. A water inlet is fixedly connected to the lower surface of the condenser pipe 6, and a water outlet is fixedly connected to the upper surface of the condenser pipe 6. Water bath heating can turn acrylonitrile and other substances contained in the wastewater into gaseous state, which flows from the distillation tank 2 into the guide pipe 8. After being cooled by the condenser pipe 6, it re-condenses into liquid and flows along the guide pipe 8 to the waste collection bin 7 for subsequent treatment.

[0029] Compared with the prior art, the wastewater treatment equipment provided by this utility model does not require the use of a large amount of coal for heating when treating wastewater, thus saving more on wastewater treatment costs.

[0030] Please refer to another embodiment of this utility model as well. Figures 1 to 4 A reaction chamber 9 is located on the left side of the heating tank 1. The process of preparing acrylonitrile in the reaction chamber 9 is carried out under vacuum. A second pipe 10 is fixedly connected to the right side of the reaction chamber 9. A second valve 11 is connected to the outer surface of the second pipe 10. A filter chamber 12 is fixedly connected to the other end of the second pipe 10. The second valve 11 can control whether the waste liquid can flow from the reaction chamber 9 to the filter chamber 12. The bottom of the filter chamber 12 is fixedly connected to the top of the distillation tank 2. A filter plate 13 is fixedly installed inside the filter chamber 12. The filter plate 13 is inclined downward. The upper plate of the filter plate 13 has filter holes. The filter plate 13 can filter out the solid substances contained in the waste liquid. The filter plate 13 needs to be cleaned by opening the door periodically. A door is movably installed on the outer surface of the filter chamber 12. A through hole 14 is opened at the bottom of the filter chamber 12. The filter chamber 12 is connected to the distillation tank 2 through the through hole 14. The waste liquid flows into the distillation tank 2 through the through hole 14.

[0031] In another embodiment of this utility model, please refer to Figures 1 to 3 A third pipe 15 is fixedly connected to the outer surface of the distillation tank 2. The end of the third pipe 15 away from the distillation tank 2 extends to the outside of the heating pool 1. A wastewater collection chamber 16 is fixedly connected to the end of the third pipe 15 away from the distillation tank 2. The wastewater collection chamber 16 is located on the right side of the heating pool 1. A third valve 17 is connected to the outer surface of the third pipe 15. The third valve 17 can control the flow of wastewater with reduced pollution level after distillation into the wastewater collection chamber 16. A cover plate is installed on the top of the wastewater collection chamber 16. The wastewater in the wastewater collection chamber 16 can be periodically removed by opening the cover plate.

[0032] Working principle: When in use, first valve 5 is opened, and condenser 6 starts working. Cold water flows in from the bottom and out from the top, continuously cooling the guide pipe 8. Then, vacuum pump 3 works to remove the gas from the distillation tank 2. Then, first valve 5 is closed and second valve 11 is opened, allowing the waste liquid in reaction chamber 9 to flow through second pipe 10 to filter chamber 12, and then to distillation tank 2. When the amount of waste liquid flowing in is sufficient, second valve 11 is closed to heat the water in heating pool 1. When a suitable temperature is reached, acrylonitrile and other substances in the waste liquid evaporate into gas and flow into guide pipe 8. In guide pipe 8, they are cooled and converted into liquid, flowing into waste collection chamber 7 through guide pipe 8. When it is found that there is no more liquid flowing into waste collection chamber 7 from guide pipe 8, third valve 17 is opened to discharge the remaining wastewater in distillation tank 2 into wastewater collection chamber 16. At this time, the wastewater contains very little acrylonitrile and other substances, meeting the wastewater discharge standards.

[0033] 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 and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste liquid treatment apparatus comprising a heating bath (1), characterized by: A distillation tank (2) is fixedly installed at the bottom of the heating pool (1). A heater is fixedly installed at the bottom of the heating pool (1). The heater is located outside the distillation tank (2). An electric heating wire is installed inside the heater. A vacuum pump (3) is fixedly installed on the outer wall surface of the heating pool (1). A first pipe (4) is fixedly connected to the output end of the vacuum pump (3). The end of the first pipe (4) away from the vacuum pump (3) extends into the interior of the distillation tank (2). The outer surface of the first pipe (4) is covered with... Equipped with a first valve (5), the upper surface of the distillation tank (2) is fixedly connected to a guide pipe (8), the other end of the guide pipe (8) is fixedly connected to a waste collection bin (7), the waste collection bin (7) is located on the right side of the heating pool (1), a discharge pipe is fixedly installed on the right side of the waste collection bin (7), a condenser pipe (6) is sleeved on the outer surface of the middle section of the guide pipe (8), a water inlet is fixedly connected to the lower surface of the condenser pipe (6), and a water outlet is fixedly connected to the upper surface of the condenser pipe (6).

2. The waste liquid treatment apparatus according to claim 1, characterized by: A reaction chamber (9) is provided on the left side of the heating pool (1), and a second pipe (10) is fixedly connected to the right side of the reaction chamber (9).

3. The waste liquid treatment apparatus according to claim 2, characterized by: The outer surface of the second pipe (10) is connected to a second valve (11), and the other end of the second pipe (10) is fixedly connected to a filter chamber (12), the bottom of which is fixedly connected to the top of the distillation tank (2).

4. The waste liquid treatment apparatus according to claim 3, characterized by: A filter plate (13) is fixedly installed inside the filter chamber (12). The filter plate (13) is inclined downward. The upper plate of the filter plate (13) has filter holes. A door is movably installed on the outer surface of the filter chamber (12).

5. The waste liquid treatment apparatus according to claim 3, wherein: The bottom of the filter chamber (12) is provided with a through hole (14), and the filter chamber (12) is connected to the distillation tank (2) through the through hole (14).

6. The waste liquid treatment apparatus according to claim 1, wherein: A third pipe (15) is fixedly connected to the outer surface of the distillation tank (2). The end of the third pipe (15) away from the distillation tank (2) extends to the outside of the heating pool (1). A wastewater collection chamber (16) is fixedly connected to the end of the third pipe (15) away from the distillation tank (2).

7. The waste liquid treatment apparatus according to claim 6, characterized by: The wastewater collection chamber (16) is located on the right side of the heating pool (1), and the outer surface of the third pipe (15) is connected to a third valve (17). A cover plate is installed on the top of the wastewater collection chamber (16).

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