Energy-saving device for treating waste emulsion by using falling-film evaporator

Abstract

The utility model discloses an energy-saving falling film evaporator waste emulsion treatment device, and relates to the technical field of emulsion treatment, the energy-saving falling film evaporator waste emulsion treatment device comprises an evaporation tank main body, one side of the top of the evaporation tank main body is provided with a steam injection port, and one side of the bottom of the evaporation tank main body is provided with a first exhaust pipeline; one end of the first exhaust pipeline and one end of the second exhaust pipeline are both connected with a separation chamber, a gas conveying pipeline is installed above the separation chamber, a heater is installed at the end, away from the separation chamber, of the gas conveying pipeline, and a compressor is installed on one side of the heater. When the device is used, heated steam cannot be mixed with the waste emulsion to be treated, and the heated steam can directly flow back to the gas conveying pipeline after being used and is reutilized through secondary heating, so that incomplete separation of the waste emulsion caused by mixing of the heated steam and the waste emulsion to be treated is avoided; meanwhile, heated steam can be directly recycled and heated and then is reused, separation is not needed, and compared with a traditional waste emulsion device, energy is saved.

Description

Technical Field

[0001] The present application relates to the technical field of emulsion treatment, and in particular to a device for treating waste emulsion using an energy-saving falling film evaporator. Background Art

[0002] Falling film evaporation is to add the feed liquid from the upper tube box of the falling film evaporator heating chamber, and evenly distribute it to each heat exchange tube through the liquid distribution and film forming device. Under the action of gravity, vacuum induction and airflow, it flows from top to bottom in a uniform film. During the flow process, it is heated and vaporized by the shell side heating medium, and the generated steam and liquid phase enter the separation chamber of the evaporator together. After the vapor and liquid are fully separated, the steam enters the condenser for condensation (single-effect operation) or enters the next-effect evaporator as a heating medium, thereby realizing multi-effect operation, and the liquid phase is discharged from the separation chamber.

[0003] During the use of the common falling film evaporator on the market, the steam that has been used once will directly enter the separation chamber or condensation chamber with the liquid for separation. In this way, the heated steam will be mixed with the liquid to be treated, and too much liquid will be generated in the condensation chamber or separation chamber. This will also cause the liquid to be treated to form a film in the heat exchange tube at a slower speed, and the steam utilization rate will be low.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an energy-saving falling film evaporator device for treating waste emulsion is proposed. Utility Model Content

[0005] The purpose of the present application is to provide an energy-saving falling film evaporator for treating waste emulsion to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: an energy-saving falling film evaporator device for treating waste emulsion, comprising an evaporator body, a steam injection port is installed on one side of the top of the evaporator body, and a steam injection pipe is installed on one side of the steam injection port, a first exhaust pipe is installed on one side of the bottom of the evaporator body, and a second exhaust pipe is installed above the first exhaust pipe, one end of the first exhaust pipe and one end of the second exhaust pipe are both connected to a separation chamber, and a gas pipeline is installed above the separation chamber, a heater is installed on one end of the gas pipeline away from the separation chamber, and a compressor is installed on one side of the heater.

[0007] Furthermore, a discharge port is installed at the bottom of the evaporator body, and a liquid separation plate is installed above the evaporator body, a tank cover is installed above the liquid separation plate, and a liquid injection port is installed above the tank cover.

[0008] Furthermore, a recovery pipe is installed above the second exhaust pipe, and a booster pump is installed above the recovery pipe. One end of the recovery pipe is connected to the interior of the evaporator body, and the other end of the recovery pipe is connected to the gas delivery pipe.

[0009] Furthermore, a plurality of heat exchange tubes are vertically installed inside the evaporator body, and a sealing plate is installed in the middle of the evaporator body. The heat exchange tubes all pass through the sealing plate, and the horizontal height of the recovery pipe is higher than the height of the sealing plate.

[0010] Furthermore, a drainage pipe is installed on the side of the separation chamber away from the first exhaust pipe, and a water reservoir is provided at the lower part of the separation chamber, a condensation chamber is provided at the upper part of the separation chamber, and three condensation screens with honeycomb structures are transversely installed inside the condensation chamber.

[0011] Furthermore, the compressor is connected to the interior of the evaporator body through a steam injection pipe and a steam injection port.

[0012] The present application provides an energy-saving falling film evaporator for treating waste emulsion, which has the following beneficial effects: when in use, the heated steam will not mix with the waste emulsion to be treated, and the heated steam will directly flow back to the gas pipeline after use to be reheated and reused, thereby avoiding mixing with the waste emulsion to be treated and causing incomplete separation of the waste emulsion, and at the same time, the heated steam can be directly recovered and heated for reuse without separation, which is more energy-saving than the traditional waste emulsion device;

[0013] The water in the waste emulsion of the present application is vaporized inside the heat exchange tube and enters the first exhaust pipe and the second exhaust pipe from the bottom of the heat exchange tube and enters the separation chamber, while the hot steam flows into the recovery pipe in the gap of the heat exchange tube. At this time, the booster pump provides power for the recovery pipe. Due to the presence of the sealing plate, the hot steam will not enter the bottom of the evaporator body to avoid mixing with the newly generated steam in the heat exchange tube. The emulsion in the waste emulsion forms a mucous film inside the heat exchange tube and flows along the tube wall of the heat exchange tube to the bottom of the evaporator body to be collected, and finally discharged through the discharge port;

[0014] The steam generated in the heat exchange tube enters the separation chamber along the first exhaust pipe and the second exhaust pipe. The steam is blocked by the honeycomb condensation screen in the condensation chamber and is cooled. A part of the steam is cooled to form water and flows into the water reservoir to be collected. The other part of the steam enters the heater through the gas pipeline to be heated again, and then is compressed by the compressor and enters the interior of the evaporator body through the steam injection pipeline to be reused to form a circular utilization, which is highly efficient and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the overall structure of an energy-saving falling film evaporator for treating waste emulsion in this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of the evaporation tank body of an energy-saving falling film evaporator for treating waste emulsion in this application;

[0017] Figure 3 This is a schematic diagram of the internal structure of a separation chamber of an energy-saving falling film evaporator device for treating waste emulsion in the present application.

[0018] In the figure: 1. evaporator body; 101. heat exchange tube; 102. sealing plate; 2. discharge port; 3. liquid separation plate; 4. compressor; 5. tank cover; 6. liquid injection port; 7. steam injection port; 8. steam injection pipeline; 9. first exhaust pipeline; 10. second exhaust pipeline; 11. separation chamber; 1101. water reservoir; 1102. condensation chamber; 1103. condensation screen; 12. drainage pipeline; 13. recovery pipeline; 14. booster pump; 15. gas pipeline; 16. heater. DETAILED DESCRIPTION

[0019] See also Figure 1-Figure 3 The present application provides a technical solution: an energy-saving falling film evaporator for treating waste emulsion, comprising an evaporator body 1, a steam injection port 7 is installed on one side of the top of the evaporator body 1, and a steam injection pipe 8 is installed on one side of the steam injection port 7, a first exhaust pipe 9 is installed on one side of the bottom of the evaporator body 1, and a second exhaust pipe 10 is installed above the first exhaust pipe 9, one end of the first exhaust pipe 9 and one end of the second exhaust pipe 10 are both connected to a separation chamber 11, and a gas pipeline 15 is installed above the separation chamber 11, a heater 16 is installed on one end of the gas pipeline 15 away from the separation chamber 11, and a compressor 4 is installed on one side of the heater 16.

[0020] A discharge port 2 is installed at the bottom of the evaporator body 1 , and a liquid separation plate 3 is installed above the evaporator body 1 . A tank cover 5 is installed above the liquid separation plate 3 , and a liquid injection port 6 is installed above the tank cover 5 .

[0021] A recovery pipe 13 is installed above the second exhaust pipe 10 , and a booster pump 14 is installed above the recovery pipe 13 . One end of the recovery pipe 13 is connected to the inside of the evaporator body 1 , and the other end of the recovery pipe 13 is connected to the gas delivery pipe 15 .

[0022] A plurality of heat exchange tubes 101 are vertically installed inside the evaporator body 1, and a sealing plate 102 is installed in the middle of the evaporator body 1. At the same time, the heat exchange tubes 101 all pass through the inside of the sealing plate 102. The horizontal height of the recovery pipe 13 is higher than the height of the sealing plate 102. The hot steam does not enter the inside of the heat exchange tube 101 inside the evaporator body 1, but heats the heat exchange tube 101 in the gaps between the plurality of heat exchange tubes 101. The water in the waste emulsion is vaporized inside the heat exchange tube 101 and enters from the bottom of the heat exchange tube 101. The hot steam flows into the first exhaust pipe 9 and the second exhaust pipe 10 and then into the separation chamber 11, while the hot steam flows into the recovery pipe 13 in the gap of the heat exchange tube 101. At this time, the booster pump 14 provides power for the recovery pipe 13. Due to the existence of the sealing plate 102, the hot steam will not enter the bottom of the evaporator body 1, and will not mix with the newly generated steam in the heat exchange tube 101. The emulsion in the waste emulsion forms a mucous film inside the heat exchange tube 101 and flows along the tube wall of the heat exchange tube 101 to the bottom of the evaporator body 1 to be collected, and finally discharged through the discharge port 2.

[0023] A drainage pipe 12 is installed on the side of the separation chamber 11 away from the first exhaust pipe 9, and a water reservoir 1101 is arranged at the lower part of the separation chamber 11. A condensation chamber 1102 is arranged at the upper part of the separation chamber 11, and three condensation screens 1103 with a honeycomb structure are horizontally installed inside the condensation chamber 1102. The compressor 4 is connected with the interior of the evaporator body 1 through the steam injection pipe 8 and the steam injection port 7. The steam is blocked by the honeycomb condensation screen 1103 in the condensation chamber 1102 and cooled. A part of the steam is cooled to form water and flows into the water reservoir 1101 to be collected. Another part of the steam enters the heater 16 through the gas transmission pipe 15 to be heated again, and then enters the interior of the evaporator body 1 through the steam injection pipe 8 after being compressed by the compressor 4 to be reused to form a circular utilization, which is efficient and energy-saving.

[0024] In summary, when the energy-saving falling film evaporator is used to treat waste emulsion, the waste emulsion is first poured into the interior of the evaporator body 1 from the liquid injection port 6, and the waste emulsion is first divided by the night plate 3 inside the evaporator body 1 and flows evenly into the interior of the heat exchange tube 101. At this time, the hot steam is heated by the heater 16 and processed by the compressor 4, and then injected into the interior of the evaporator body 1 from the steam injection port 7 through the steam injection pipe 8;

[0025] The hot steam will not enter the heat exchange tube 101 in the evaporator body 1, but heat the heat exchange tube 101 in the gaps between the heat exchange tubes 101, and the water in the waste emulsion is vaporized in the heat exchange tube 101 and enters the first exhaust pipe 9 and the second exhaust pipe 10 from the bottom of the heat exchange tube 101 and enters the separation chamber 11, while the hot steam flows into the recovery pipe 13 in the gaps of the heat exchange tube 101, and at this time the booster pump 14 provides power for the recovery pipe 13. Due to the presence of the sealing plate 102, the hot steam will not enter the bottom of the evaporator body 1, avoiding mixing with the newly generated steam in the heat exchange tube 101. The emulsion in the waste emulsion forms a mucous film inside the heat exchange tube 101 and flows along the tube wall of the heat exchange tube 101 to the bottom of the evaporator body 1 to be collected, and finally discharged through the discharge port 2;

[0026] The steam generated in the heat exchange tube 102 enters the separation chamber 11 along the first exhaust pipe 9 and the second exhaust pipe 10, and is blocked by the honeycomb condensation screen 1103 in the condensation chamber 1102 to be cooled. A part of the steam is cooled to form water and flows into the water reservoir 1101 to be collected, and another part of the steam enters the heater 16 through the gas pipeline 15 to be heated again, and then is compressed by the compressor 4 and enters the evaporator body 1 through the steam injection pipe 8 to be reused to form a circular utilization, which is efficient and energy-saving.

[0027] The embodiments of the present application are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present application to the disclosed forms. Many modifications and variations are apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present application, and to enable those of ordinary skill in the art to understand the present application and thereby design various embodiments with various modifications suitable for specific purposes.

Claims

1. An energy-saving falling film evaporator for treating waste emulsion, comprising an evaporation tank body (1), characterized in that: A steam injection port (7) is installed on one side of the top of the evaporator body (1), and a steam injection pipe (8) is installed on one side of the steam injection port (7); a first exhaust pipe (9) is installed on one side of the bottom of the evaporator body (1), and a second exhaust pipe (10) is installed above the first exhaust pipe (9); one end of the first exhaust pipe (9) and one end of the second exhaust pipe (10) are both connected to a separation chamber (11), and a gas delivery pipe (15) is installed above the separation chamber (11); a heater (16) is installed on one end of the gas delivery pipe (15) away from the separation chamber (11), and a compressor (4) is installed on one side of the heater (16).

2. The energy-saving falling film evaporator for treating waste emulsion according to claim 1, characterized in that: The bottom of the evaporator body (1) is provided with a discharge port (2), and a liquid separation plate (3) is provided above the evaporator body (1), a tank cover (5) is provided above the liquid separation plate (3), and a liquid injection port (6) is provided above the tank cover (5).

3. The energy-saving falling film evaporator waste emulsion treatment device according to claim 1 is characterized in that: A recovery pipe (13) is installed above the second exhaust pipe (10), and a booster pump (14) is installed above the recovery pipe (13); one end of the recovery pipe (13) is connected to the interior of the evaporator body (1), and the other end of the recovery pipe (13) is connected to the gas delivery pipe (15).

4. The energy-saving falling film evaporator waste emulsion treatment device according to claim 3 is characterized in that: A plurality of heat exchange tubes (101) are vertically installed inside the evaporator body (1), and a sealing plate (102) is installed in the middle of the evaporator body (1), while the heat exchange tubes (101) all pass through the inside of the sealing plate (102), and the horizontal height of the recovery pipe (13) is higher than the height of the sealing plate (102).

5. The energy-saving falling film evaporator waste emulsion treatment device according to claim 1 is characterized in that: A liquid discharge pipe (12) is installed on a side of the separation chamber (11) away from the first exhaust pipe (9), and a water reservoir (1101) is provided at the lower part of the separation chamber (11), a condensation chamber (1102) is provided at the upper part of the separation chamber (11), and three condensation screens (1103) with a honeycomb structure are installed transversely inside the condensation chamber (1102).

6. The energy-saving falling film evaporator waste emulsion treatment device according to claim 1 is characterized in that: The compressor (4) is connected to the interior of the evaporator body (1) via a steam injection pipe (8) and a steam injection port (7).

Images