Low-temperature vacuum distillation device capable of changing output

Abstract

The utility model relates to the technical field of low-temperature vacuum distillation devices, in particular to a low-temperature vacuum distillation device capable of changing output. The low-temperature vacuum distillation device capable of changing the output comprises a main vacuum distillation still, an auxiliary vacuum distillation still and a condenser, the left side of the main vacuum distillation still is communicated with a second valve, a water outlet of the second valve is communicated with a water conveying pipe, a water outlet of the water conveying pipe is communicated with the auxiliary vacuum distillation still, and the condenser is communicated with the main vacuum distillation still. The tops of the main vacuum distillation kettle and the auxiliary vacuum distillation kettle are respectively communicated with a main steam pipe and an auxiliary steam pipe; by adopting the design of the double vacuum distillation kettles, switching between a conventional state and a high-yield state can be realized, so that the effect of changing the output is realized, different pollution discharge distillation demands of a factory are met, and the design of the double drainage valves can meet the drainage demand of the condensate water output in the high-yield state. The water tank is prevented from being filled to influence normal work of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of low-temperature vacuum distillation devices, in particular to a low-temperature vacuum distillation device capable of changing the output. Background Art

[0002] Low-temperature vacuum distillation is a separation technology carried out under high vacuum conditions. It has the characteristics of low distillation temperature, high system vacuum, short material heating time, and high degree of separation. The separation process is irreversible and there is no boiling bubbling phenomenon. It is particularly suitable for separating high-boiling point, heat-sensitive and easily oxidized substances, and is therefore used in waste liquid treatment.

[0003] Nowadays, most of the common low-temperature vacuum distillation devices on the market are of single still design, and their output is fixed. When the waste liquid generated by the factory increases, the low-temperature vacuum distillation device with a single still will be difficult to meet the large-scale waste liquid distillation demand. In view of the above situation, technical innovation is carried out on the basis of the existing low-temperature vacuum distillation device. Utility Model Content

[0004] The utility model aims to provide a low-temperature vacuum distillation device capable of changing the output, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a low-temperature vacuum distillation device capable of changing the output, comprising:

[0006] A main vacuum distillation kettle, a secondary vacuum distillation kettle and a condenser, the left side of the main vacuum distillation kettle is connected with a second valve, the water outlet of the second valve is connected with a water pipe, the water outlet of the water pipe is connected with the secondary vacuum distillation kettle, the tops of the main vacuum distillation kettle and the secondary vacuum distillation kettle are respectively connected with a main steam pipe and a secondary steam pipe, wherein:

[0007] The air outlet of the auxiliary steam pipe is connected to a first valve, and the air outlet of the first valve and the air outlet of the main steam pipe are both connected to the air inlet of the condenser.

[0008] Preferably, a water tank is placed at the bottom of the condenser, the main vacuum distillation kettle and the auxiliary vacuum distillation kettle are located on the left side of the water tank, and the main vacuum distillation kettle is located in front of the auxiliary vacuum distillation kettle.

[0009] Preferably, support columns are evenly arranged on the top of the water tank, and the condenser is arranged on the top of the support columns.

[0010] Preferably, the water outlet of the condenser is connected to a water outlet pipe, and the water outlet of the water outlet pipe is connected to the water inlet of the water tank.

[0011] Preferably, the right side of the water tank is evenly connected with two sets of drain valves, and the left side of the main vacuum distillation kettle is connected with a water inlet pipe.

[0012] Preferably, the steam condensation efficiency of the condenser is greater than the sum of the steam output efficiencies of the main vacuum distillation kettle and the auxiliary vacuum distillation kettle.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model adopts a double vacuum distillation kettle design, which can be switched between a normal state and a high-yield state, so as to achieve the effect of changing the output, so as to meet the different sewage distillation requirements of the factory. The double drain valve design can meet the drainage requirements of the condensed water generated in the high-yield state, avoiding the water tank being filled and affecting the normal operation of the device;

[0015] The whole device has a compact structure and occupies a small area, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a low-temperature vacuum distillation device capable of changing the output of the utility model;

[0017] Figure 2 This is a left side view of a low-temperature vacuum distillation device capable of changing the output according to the utility model;

[0018] Figure 3 It is a rear side view of a low-temperature vacuum distillation device capable of changing the output according to the utility model.

[0019] In the figure: 1. main vacuum still; 11. auxiliary vacuum still; 12. water tank; 13. drain valve; 14. water inlet pipe; 15. condenser; 16. water outlet pipe; 17. main steam pipe; 18. auxiliary steam pipe; 181. first valve; 19. second valve; 191. water pipe; 2. support column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 3A low-temperature vacuum distillation device capable of changing the output comprises a main vacuum distillation kettle 1, a secondary vacuum distillation kettle 11 and a condenser 15, the left side of the main vacuum distillation kettle 1 is connected with a second valve 19, the water outlet of the second valve 19 is connected with a water pipe 191, the water outlet of the water pipe 191 is connected with the secondary vacuum distillation kettle 11, the tops of the main vacuum distillation kettle 1 and the secondary vacuum distillation kettle 1 are respectively connected with a main steam pipe 17 and a secondary steam pipe 18, the air outlet of the secondary steam pipe 18 is connected with a first valve 181, the air outlet of the first valve 181 and the air outlet of the main steam pipe 17 are both connected with the air inlet of the condenser 15, a water tank 12 is arranged at the bottom of the condenser 15, the main vacuum distillation kettle 1 and the secondary vacuum distillation kettle 11 are located on the left side of the water tank 12, the main vacuum distillation kettle 1 is located in front of the secondary vacuum distillation kettle 11, and the ... and the main vacuum distillation kettle 1 is located in front of the secondary vacuum distillation kettle 11. The top of 12 is evenly fixed with support columns 2, and a condenser 15 is fixedly arranged on the top of the support column 2. The water outlet of the condenser 15 is connected with a water outlet pipe 16, and the water outlet of the water outlet pipe 16 is connected with the water inlet of the water tank 12. The right side of the water tank 12 is evenly connected with two groups of drain valves 13, and the left side of the main vacuum distillation kettle 1 is connected with a water inlet pipe 14. The sewage enters the main vacuum distillation kettle 1 through the water inlet pipe 14, and the sewage is vacuum-distilled by the main vacuum distillation kettle 1. The steam generated by the distillation enters the condenser 15 through the main steam pipe 17, and the steam is condensed by the condenser 15 and input into the water tank 12 through the water outlet pipe 16, and the condensed water in the water tank 12 is discharged through the drain valve 13. The steam condensation efficiency of the condenser 15 is greater than the sum of the steam output efficiencies of the main vacuum distillation kettle 1 and the auxiliary vacuum distillation kettle 11.

[0022] Working principle: Under normal conditions, sewage enters the main vacuum distillation kettle 1 through the water inlet pipe 14, and the sewage is vacuum distilled by the main vacuum distillation kettle 1. The steam generated by the distillation enters the condenser 15 through the main steam pipe 17, and the steam is condensed by the condenser 15 and input into the water tank 12 through the water outlet pipe 16, and the condensed water in the water tank 12 is discharged through the drain valve 13;

[0023] Under high-production conditions, the first valve 181 and the second valve 19 are opened. At this time, after the sewage enters the main vacuum distillation kettle 1 through the water inlet pipe 14, the excess sewage will enter the auxiliary vacuum distillation kettle 11 along the second valve 19 and the water pipe 191. A large amount of sewage will be vacuum-distilled through the operation of the main vacuum distillation kettle 1 and the auxiliary vacuum distillation kettle 11. The steam generated by the main vacuum distillation kettle 1 and the auxiliary vacuum distillation kettle 11 will enter the condenser 15 through the main steam pipe 17 and the auxiliary steam pipe 18 respectively for condensation. The two sets of drain valves 13 can improve the drainage efficiency of the water tank 12, thereby meeting the drainage demand for the amount of condensed water generated under high-production conditions and avoiding the water tank 12 from being filled.

Claims

1. A low-temperature vacuum distillation apparatus capable of changing the output, characterized in that: include: A main vacuum distillation kettle (1), a secondary vacuum distillation kettle (11) and a condenser (15); the left side of the main vacuum distillation kettle (1) is connected to a second valve (19); the water outlet of the second valve (19) is connected to a water pipe (191); the water outlet of the water pipe (191) is connected to the secondary vacuum distillation kettle (11); the tops of the main vacuum distillation kettle (1) and the secondary vacuum distillation kettle (11) are respectively connected to a main steam pipe (17) and a secondary steam pipe (18); wherein: The air outlet of the auxiliary steam pipe (18) is connected to a first valve (181), and the air outlet of the first valve (181) and the air outlet of the main steam pipe (17) are both connected to the air inlet of the condenser (15).

2. A low-temperature vacuum distillation apparatus capable of changing the output according to claim 1, characterized in that: A water tank (12) is placed at the bottom of the condenser (15), the main vacuum distillation kettle (1) and the auxiliary vacuum distillation kettle (11) are located on the left side of the water tank (12), and the main vacuum distillation kettle (1) is located in front of the auxiliary vacuum distillation kettle (11).

3. A low-temperature vacuum distillation apparatus capable of changing the output according to claim 2, characterized in that: Support columns (2) are evenly arranged on the top of the water tank (12), and the condenser (15) is arranged on the top of the support columns (2).

4. A low-temperature vacuum distillation apparatus capable of changing the output according to claim 2, characterized in that: The water outlet of the condenser (15) is connected to a water outlet pipe (16), and the water outlet of the water outlet pipe (16) is connected to the water inlet of the water tank (12).

5. The low-temperature vacuum distillation apparatus capable of changing the output according to claim 2, characterized in that: The right side of the water tank (12) is evenly connected to two sets of drainage valves (13), and the left side of the main vacuum distillation kettle (1) is connected to a water inlet pipe (14).

6. A low-temperature vacuum distillation apparatus capable of changing the output according to claim 2, characterized in that: The steam condensation efficiency of the condenser (15) is greater than the sum of the steam output efficiencies of the main vacuum distillation kettle (1) and the auxiliary vacuum distillation kettle (11).

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