Device for improving vacuum degree of system

Abstract

The utility model discloses a device for improving the vacuum degree of a system. The device comprises an air inlet, an air outlet, an air inlet baffle, a porous nozzle, a barrel, a water pool, a water cooling tower, a circulating pump, a temperature sensor and a liquid outlet pipe. The multi-hole nozzle is arranged at the central position in the cylinder body and is 1.5 m away from the gas outlet, and the separation holes with the same aperture are uniformly distributed on the multi-hole nozzle, so that water can be uniformly distributed in the cylinder body, and the effect of full contact with gas is achieved. The vacuum distillation device is simple in structure, convenient to operate and capable of improving the vacuum degree of the device, improving the product quality, reducing heat consumed by the distillation system and increasing economic benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid distillation under vacuum state, and directly relates to a device for improving the vacuum degree of a system. Background Art

[0002] At present, in the crude glycerol purification process, the vacuum degree in the distillation tower is low, resulting in low output and high heat consumption. At the same time, there are many impurities in the tail gas, which are more corrosive to the vacuum equipment. Low vacuum degree will also cause poor product quality, causing the entire production system to shorten the production cycle due to low vacuum degree. If the vaporized material cannot be removed and cooled in time, it will cause reflux, which will directly lead to low product output and ultimately increase production costs. Therefore, it is very necessary to study a device to improve the vacuum degree of the system. Summary of the invention

[0003] The purpose of the utility model is to solve the problems that the vacuum degree of the distillation system is low, the water-soluble gas cannot be separated or the separation effect is poor, the vaporized raw materials reflux, the production system has low output due to repeated heating, and finally the production cost becomes high. Now, a device for improving the vacuum degree of the system is studied to improve the vacuum degree of the system, protect the vacuum equipment, and improve the operation cycle of the device.

[0004] The purpose of the utility model is achieved in this way: a device for improving the vacuum degree of the system, the device consists of an air inlet, an air outlet, an air inlet baffle, a porous nozzle, a cylinder, a pool, a cooling tower, a circulation pump, a temperature sensor, and a liquid outlet pipe. The air inlet is arranged on one side below the cylinder, the porous nozzle and the air inlet baffle are arranged inside the cylinder, the porous nozzle is arranged at the center of the upper part of the cylinder, 1.5 meters away from the air outlet, the porous nozzle has evenly distributed separation holes with the same aperture, the porous nozzle is connected to the outlet of the circulation pump through a pipeline and a valve, the porous nozzle enters the inside of the cylinder through a pipeline on one side of the upper part of the shell, the air inlet baffle is arranged inside the cylinder, and the angle with the shell is not more than 45°. The inlet pipe of the cooling tower is connected to the outlet of the circulation pump through a pipeline and a valve, the outlet pipe of the cooling tower is inserted into the pool, and the bottom side of the pool is connected to the inlet of the circulation pump through a pipeline and a valve. The cylinder includes a top end cap, a bottom end cap, and a shell. The top end cap is arranged at the top of the cylinder, the air outlet is arranged at the upper part of the top end cap, the bottom end cap is arranged at the bottom of the cylinder, the liquid outlet pipe is arranged at the lower part of the bottom end cap, and the liquid outlet pipe is inserted into the pool, and the pool is filled with 2 / 3 of water. The shell is connected with the top end cap and the bottom end cap to seal the top and bottom of the cylinder respectively. The temperature sensors are arranged at the air inlet and the air outlet respectively.

[0005] Preferably, the air inlet is arranged on the lower side of the cylinder, 0.5 meters away from the bottom head, the angle between the air inlet baffle and the shell is not greater than 45°, and the pipe diameter of the air inlet can be improved according to the different gas production of the system.

[0006] Preferably, temperature sensors are installed at the air inlet and the air outlet respectively to observe the temperatures of the air inlet and the air outlet, so as to adjust the amount of water inlet.

[0007] The size of the openings of the porous nozzle should be moderate, and the water sprayed from the porous nozzle should be in the form of water drops, and water mist should not be generated, which may be brought into the vacuum system.

[0008] The cooling tower can cool the circulating water, and the water sprayed by the porous nozzle can separate the water-soluble gas in the system gas. The porous nozzle needs to fully distribute the water inside the cylinder to ensure that the incoming gas in the system can fully contact with the water.

[0009] The water level in the pool cannot be too low and must always be maintained at 2 / 3. If the water level is too low, exposing the outlet pipe opening will cause a sudden drop in the system vacuum, leading to production stoppage. If the water level is high, it will overflow the pool, causing water waste and environmental pollution.

[0010] The utility model has the beneficial effects of improving the vacuum degree of the distillation system and reducing heat consumption, increasing the system vacuum degree by 18%, reducing heat consumption by 10%, extending the production cycle of the device, improving product quality and output, and increasing economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 The utility model shows a structural schematic diagram of a device for improving the vacuum degree of a system.

[0012] Description of Reference Numerals

[0013] In the figure, 1 is the air inlet, 2 is the air outlet, 3 is the air inlet baffle, 4 is the porous nozzle, 5 is the cylinder, 51 is the top head, 52 is the bottom head, 53 is the shell, 6 is the water pool, 7 is the cooling tower, 8 is the circulating pump, 9 is the temperature sensor, and 10 is the liquid outlet pipe. DETAILED DESCRIPTION

[0014] Attached Figure 1 The structural diagram of the utility model is shown. Figure 1 The utility model is further described.

[0015] A device for improving the vacuum degree of a system, the device comprising an air inlet 1, an air outlet 2, an air inlet baffle 3, a multi-hole nozzle 4, a cylinder 5, a water pool 6, a cooling tower 7, a circulating pump 8, a temperature sensor 9, and a liquid outlet pipe 10. The cylinder (5) comprises a top seal (51), a bottom seal (52), and a shell (53). The top seal (51) is arranged at the upper part of the cylinder (5), the air outlet (2) is arranged at the top of the top seal (51), the bottom seal (52) is arranged at the bottom of the cylinder (5), the liquid outlet pipe (10) is arranged at the lower part of the bottom seal (52), and the liquid outlet pipe (10) is inserted into the water pool (6), and the water pool (6) contains 2 / 3 of water. The shell (53) is connected to the top seal (51) and the bottom seal (52) to seal the top and bottom of the cylinder (5) respectively. The temperature sensor (9) is arranged at the air inlet (1) and the air outlet (2), respectively. The air inlet (1) is arranged at one side below the cylinder (5), 0.5 meters away from the bottom end cap (52), and the bottom end cap (52) is more than 10 meters away from the bottom of the pool (6). The porous nozzle (4) and the air inlet baffle (3) are both arranged inside the cylinder. The porous nozzle (4) is arranged at the center of the upper part of the cylinder (5), 1.5 meters away from the air outlet (2). The porous nozzle (4) has evenly distributed separation holes with the same aperture. The porous nozzle (4) is connected to the outlet of the circulation pump (8) through a pipeline. The pipeline connected to the porous nozzle (4) enters the cylinder (5) at one side of the upper part of the shell (53). The air inlet baffle (3) is arranged inside the cylinder (5), and the angle between the porous nozzle (4) and the shell (53) is not more than 45 degrees. The inlet pipe of the cooling tower (7) is connected to the outlet of the circulation pump (8) through a pipe and a valve. The outlet pipe of the cooling tower (7) is inserted into the water pool (6). One side of the bottom of the water pool (6) is connected to the inlet of the circulation pump (8) through a pipe and a valve.

[0016] The air inlet baffle (3) can prevent the water flow in the cylinder (5) from entering the vacuum system; the outlet of the circulation pump (8) has two valves, and the openings of the two valves need to be adjusted during production operation to adjust the water spray volume of the multi-hole nozzle (4) and the outlet temperature of the air outlet (2).

[0017] The diameter of the liquid outlet pipe (10) should be of moderate size. If the diameter of the liquid outlet pipe (10) is too small, scale or impurities may clog the pipe during long-term operation, causing water in the cylinder (5) to enter the vacuum system, thus affecting production.

[0018] Working process: start the circulation pump (8), pump the water in the pool (6) into the cylinder (5) and the cooling tower (7) through the porous nozzle (4). The water sprayed by the porous nozzle (4) will not enter the vacuum system under the shielding of the air inlet baffle (3). The cooling tower (7) can cool the water. The gas entering the air inlet (1) passes through the air inlet baffle (3) and enters the cylinder (5) from bottom to top. The gas contacts the water sprayed by the porous nozzle (4) in countercurrent. The water-soluble gas contained in the incoming gas is brought into the pool (6) by the water sprayed by the porous nozzle (4). At the same time, the water sprayed by the porous nozzle (4) can reduce the intake temperature to achieve the cooling effect. The gas enters the vacuum pump through the air outlet (2) to evacuate the system. During the production operation, pay attention to the temperature difference between the air inlet (1) and the air outlet (2). If the temperature difference is small (less than 5°C), the amount of water entering the porous nozzle (4) needs to be increased. When the temperature difference between the air inlet (1) and the air outlet (2) increases by about 5°C, the device tends to be stable.

[0019] Compared with the prior art, the utility model provides a device for improving the vacuum degree of the system, which has the characteristics of improving product quality and output, reducing consumption, and convenient operation. It improves the vacuum degree of the system by 18%, reduces heat consumption by 10%, and increases economic benefits.

Claims

1. A device for improving the vacuum degree of a system, comprising an air inlet (1), an air outlet (2), an air inlet baffle (3), a porous nozzle (4), a cylinder (5), a water pool (6), a cooling tower (7), a circulating pump (8), a temperature sensor (9), and a liquid outlet pipe (10), wherein: The air inlet (1), the air outlet (2), and the liquid outlet pipe (10) are all arranged on the cylinder (5), the air inlet baffle (3) and the multi-hole nozzle (4) are all arranged inside the cylinder (5), the liquid outlet pipe (10) is inserted into the water pool (6), the multi-hole nozzle (4) is connected to the outlet of the circulation pump (8) through a pipeline, the inlet pipe of the cooling tower (7) is connected to the outlet of the circulation pump (8), the outlet pipe of the cooling tower (7) is inserted into the water pool (6), one side of the bottom of the water pool (6) is connected to the inlet of the circulation pump (8) through a pipeline and a valve, and 2 / 3 of water is contained in the water pool (6).

2. A device for improving the vacuum degree of a system according to claim 1, characterized in that: The cylinder (5) comprises a top seal (51), a bottom seal (52), and a shell (53); the top seal (51) is arranged at the top of the cylinder (5), the bottom seal (52) is arranged at the bottom of the cylinder (5), and the shell (53) is connected to the top seal (51) and the bottom seal (52) to seal the top and bottom of the cylinder (5) respectively.

3. A device for improving the vacuum degree of a system according to claim 1, characterized in that: The multi-porous nozzle (4) is arranged at the center of the cylinder (5), 1.5 meters away from the gas outlet (2), and the multi-porous nozzle (4) has evenly distributed separation holes with the same aperture shape.

4. The device for improving the vacuum degree of a system according to claim 1, characterized in that: The temperature sensors (9) are respectively arranged at the air inlet (1) and the air outlet (2), the air inlet (1) is located at one side below the cylinder (5), the air outlet (2) is located at the upper end of the top end cap (51), and the liquid outlet pipe (10) is located at the lower end of the bottom end cap (52).

5. The device for improving the vacuum degree of a system according to claim 1, characterized in that: The air intake baffle (3) is arranged inside the housing (53), and the angle between the air intake baffle and the housing (53) is no greater than 45°.

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