Filtering device for exhaust of rectifying tower

Abstract

The utility model discloses a filtering device for exhaust of a rectifying tower, and belongs to the technical field of rectifying tower devices for fine chemical engineering. A filtering device for exhaust of a rectifying tower comprises the rectifying tower connected with an air outlet pipe, and further comprises a transverse pipe fixedly connected to the air outlet pipe and penetrating through the air outlet pipe; the plurality of groups of evaporation holes are formed in the transverse pipe; the telescopic cylinder is fixedly connected to the transverse pipe; the two groups of filtering blocks are connected in the transverse pipe in a sliding manner, the size of the filtering blocks is equal to that of the transverse pipe, the filtering blocks are fixedly connected with the telescopic end of the telescopic cylinder, and the filtering blocks can move in the transverse pipe through the movement of the telescopic end of the telescopic cylinder; by means of the movable filter block, gas in the gas outlet pipe can be continuously filtered, the situation that unfiltered gas directly enters a follow-up rectifier is avoided, the possibility that the rectifier is damaged is reduced, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation column devices for fine chemicals, in particular to a filtering device for the exhaust gas of a distillation column. Background Art

[0002] A distillation column is a tower-type gas-liquid contact device for distillation. Utilizing the property that each component in a mixture has different volatilities, that is, the vapor pressures of each component are different at the same temperature, the light components (low-boiling substances) in the liquid phase are transferred to the gas phase, while the heavy components (high-boiling substances) in the gas phase are transferred to the liquid phase, thereby achieving the purpose of separation.

[0003] A distillation column is also a mass transfer and heat transfer device widely used in the production of fine chemicals. The high-temperature gas generated during the distillation process needs to be heat-exchanged through a rectifier. However, most of the existing rectifiers do not have a filtering device, and the corrosive substances in the gas are likely to cause corrosion and damage to the pipeline, shortening the service life of the rectifier.

[0004] Therefore, a filtering device for the exhaust gas of a distillation column is provided to solve the above-mentioned problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems raised in the above background art, and a filtering device for the exhaust gas of a distillation column is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A filtering device for the exhaust gas of a distillation column, including a distillation column, an air outlet pipe is connected to the distillation column, and further includes:

[0008] A horizontal pipe, fixedly connected to the air outlet pipe, and the horizontal pipe penetrates through the air outlet pipe;

[0009] Multiple groups of evaporation holes, all arranged on the horizontal pipe;

[0010] A telescopic cylinder, fixedly connected to the horizontal pipe;

[0011] Two groups of filter blocks, slidably connected in the horizontal pipe, the size of the filter block is equal to that of the horizontal pipe, and the filter block is fixedly connected to the telescopic end of the telescopic cylinder. Through the movement of the telescopic end of the telescopic cylinder, the filter block can move in the horizontal pipe, so as to select a group of filter blocks to filter the gas passing through the air outlet pipe, and move the other group of filter blocks into the horizontal pipe provided with evaporation holes to evaporate and discharge the water vapor adsorbed by itself.

[0012] For ease of use, preferably, an installation frame is slidably connected inside the pipe. The installation frame is a long rod with partitions provided at both ends and in the middle. Two groups of filter blocks are respectively installed on the long rod between the two partitions. The partitions are used to seal the horizontal pipe and reduce gas leakage.

[0013] For ease of installation, preferably, the installation frame is fixedly connected to the telescopic end of the telescopic cylinder.

[0014] For ease of disassembly, preferably, a connection seat is fixedly connected to the partition on the side of the installation frame, and the telescopic end of the telescopic cylinder is threadedly connected to the connection seat.

[0015] For improving the drying effect, preferably, a heating pipe is sleeved on the horizontal pipe. A spiral inner pipe is arranged inside the heating pipe, and the spiral inner pipe communicates with the air outlet pipe.

[0016] For ease of drying, preferably, the heating pipe is located at the evaporation holes.

[0017] Compared with the prior art, the present utility model provides a filtering device for the exhaust gas of a rectification column, having the following beneficial effects:

[0018] Through the movable filter blocks, the present utility model can continuously filter the gas in the air outlet pipe, avoid the situation that unfiltered gas directly enters the subsequent rectifier, reduce the possibility of damage to the rectifier, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a filtering device for the exhaust gas of a rectification column proposed by the present utility model;

[0020] Figure 2 is a schematic structural diagram of the horizontal pipe in a filtering device for the exhaust gas of a rectification column proposed by the present utility model;

[0021] Figure 3 is a schematic cross-sectional view of the horizontal pipe in a filtering device for the exhaust gas of a rectification column proposed by the present utility model.

[0022] In the figure: 1, rectification column; 101, air outlet pipe; 2, horizontal pipe; 201, evaporation holes; 202, telescopic cylinder; 3, heating pipe; 301, spiral inner pipe; 4, installation frame; 401, connection seat; 5, filter block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Embodiment 1:

[0025] Reference Figures 1-3 Figures 1-3 , a filtering device for the exhaust gas of a rectification column, includes a rectification column 1. An air outlet pipe 101 is connected to the rectification column 1. It further includes: a horizontal pipe 2 fixedly connected to the air outlet pipe 101, and the horizontal pipe 2 penetrates through the air outlet pipe 101; multiple groups of evaporation holes 201 are all arranged on the horizontal pipe 2; a telescopic cylinder 202 is fixedly connected to the horizontal pipe 2; two groups of filter blocks 5 are slidably connected inside the horizontal pipe 2. The size of the filter block 5 is equal to that of the horizontal pipe 2, and the filter block 5 is fixedly connected to the telescopic end of the telescopic cylinder 202. By moving the telescopic end of the telescopic cylinder 202, the filter block 5 can move inside the horizontal pipe 2, so as to select a group of filter blocks 5 to filter the gas passing through the air outlet pipe 101, and move the other group of filter blocks 5 into the horizontal pipe 2 provided with evaporation holes 201 to evaporate and discharge the water vapor adsorbed by itself. An installation frame 4 is slidably connected inside the horizontal pipe 2. The installation frame 4 is a long rod with partitions at both ends and in the middle. The two groups of filter blocks 5 are respectively installed on the long rod between the two partitions. The partitions are used to seal the horizontal pipe 2 to reduce gas leakage. The installation frame 4 is fixedly connected to the telescopic end of the telescopic cylinder 202. A connecting seat 401 is fixedly connected to the partition on the side of the installation frame 4, and the telescopic end of the telescopic cylinder 202 is threadedly connected to the connecting seat 401.

[0026] When this device is in use, install this device on the air outlet pipe 101 of the rectification column 1, and then control the telescopic cylinder 202 to extend through the built-in chip, so that one group of filter blocks 5 is located inside the air outlet pipe 101. The size of the horizontal pipe 2 is larger than that of the air outlet pipe 101, which is convenient for filtering. The filter block 5 is made of graphite material.

[0027] Then open the control valve inside the air outlet pipe 101 to discharge the gas in the rectification column 1. At this time, the discharged gas will pass through the filter block 5. Then, under the action of the filter block 5, the corrosive substances in the gas are filtered. Since the gas discharged from the rectification column 1 has a certain amount of water vapor, after a period of use, the filter block 5 will have more moisture. After graphite adsorbs more water, its adsorption capacity for gas will decrease. At this time, the chip can be used to control the telescopic cylinder 202 to make the other group of filter blocks 5 enter the air outlet pipe 101, and the previous filter block 5 will come to the evaporation holes 201. Since the rectification column 1 and the air outlet pipe 101 itself have a certain temperature, through heat transfer, it will reach the filter block 5, and then play a drying role to dry the filter block 5. In this way, the continuous use of the filter block 5 is realized.

[0028] After using for a period of time, it is necessary to replace the filter block 5.

[0029] Embodiment 2:

[0030] Reference Figures 1-3, A filtering device for the exhaust gas of a rectifying column, which is basically the same as that in Embodiment 1. Further, a heating pipe 3 is sleeved on the horizontal pipe 2. A spiral inner pipe 301 is arranged in the heating pipe 3. The spiral inner pipe 301 communicates with the air outlet pipe 101. The heating pipe 3 is located at the evaporation holes 201.

[0031] When in use, the heating pipe 3 can be installed and sleeved on the horizontal pipe 2, and there should be a gap between the two and they should not be in close contact. Subsequently, when in use, the high-temperature gas in the air outlet pipe 101 will directly enter the heating pipe 3, thereby drying the outside of the horizontal pipe 2 and improving the evaporation efficiency of the filter block 5.

[0032] Through the filter block 5 that can be moved, the present utility model can continuously filter the gas in the air outlet pipe 101, avoid the situation that unfiltered gas directly enters the subsequent rectifier, reduce the possibility of damage to the rectifier, and is convenient to use.

[0033] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A filtering device for exhaust gas from a distillation tower, comprising a distillation tower (1), wherein an exhaust pipe (101) is connected to the distillation tower (1), characterized in that: Also includes: A transverse pipe (2) fixedly connected to the air outlet pipe (101), wherein the transverse pipe (2) passes through the air outlet pipe (101); A plurality of groups of evaporation holes (201) are all arranged on the horizontal tube (2); A telescopic cylinder (202) fixedly connected to the transverse pipe (2); Two groups of filter blocks (5) are slidably connected in the transverse tube (2); the size of the filter blocks (5) is equal to that of the transverse tube (2); and the filter blocks (5) are fixedly connected to the telescopic end of the telescopic cylinder (202); the filter blocks (5) can be moved in the transverse tube (2) by moving the telescopic end of the telescopic cylinder (202), thereby selecting one group of filter blocks (5) to filter the gas passing through the gas outlet pipe (101), and moving the other group of filter blocks (5) into the transverse tube (2) provided with the evaporation holes (201) to discharge the water vapor adsorbed by the filter blocks themselves through evaporation.

2. A filtering device for exhaust gas from a distillation tower according to claim 1, characterized in that: A mounting frame (4) is slidably connected inside the transverse tube (2), and the mounting frame (4) is a long rod with partitions arranged at both ends and in the middle. Two groups of filter blocks (5) are respectively mounted on the long rod between the two partitions, and the partitions are used to seal the transverse tube (2) to reduce gas leakage.

3. A filtering device for exhaust gas from a distillation tower according to claim 2, characterized in that: The mounting frame (4) is fixedly connected to the telescopic end of the telescopic cylinder (202).

4. A filtering device for exhaust gas from a distillation tower according to claim 3, characterized in that: The mounting frame (4) is fixedly connected to a connecting seat (401) on a partition plate at the side, and the telescopic end of the telescopic cylinder (202) is threadedly connected to the connecting seat (401).

5. A filtering device for exhaust gas from a distillation tower according to claim 1, characterized in that: A heating tube (3) is sleeved on the transverse tube (2), a spiral inner tube (301) is arranged inside the heating tube (3), and the spiral inner tube (301) is communicated with the air outlet pipe (101).

6. A filtering device for exhaust gas from a distillation tower according to claim 5, characterized in that: The heating tube (3) is located at the evaporation hole (201).

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