Liquid-liquid separation equipment with visual interface

Abstract

The utility model belongs to the technical field of gas purification crude benzene production, and particularly relates to liquid-liquid separation equipment with a visual interface, which comprises a tank body and a window, and is characterized in that the length of the window accounts for more than 30% of the height of the tank body, and the window comprises a transparent safety glass sheet, a flange and a gasket, the transparent safety glass sheet is located on the outer surface or the inner surface of the tank body, gaskets and flanges are sequentially arranged on the two sides of the transparent safety glass sheet and connected through bolts, one or two LED lamp strips are arranged along the long edge of the transparent safety glass sheet, the LED lamp strips are connected with a lighting power source, and a lighting switch is arranged near the window; under the irradiation of the LED lamp strip, light rays respectively act with the light-phase liquid and the heavy-phase liquid to generate chromatic aberration, so that a liquid-liquid interface is highlighted and is easy to identify. The liquid-liquid separator has the beneficial effects that the equipment has all normal functions of the liquid-liquid separator and is not influenced by time and regions, and the interface of the separator can be observed at any time and is clear and easy to judge.

Description

Technical Field

[0001] The utility model belongs to the technical field of crude benzene production in coal gas purification, and particularly relates to a liquid-liquid separation device with a visual interface. Background Technique

[0002] Under normal pressure, benzene will form an azeotrope with water at about 70°C. In the process of washing benzene from coke oven gas, wash oil is used to wash and separate crude benzene from coke oven gas. After the wash oil is distilled, benzene vapor is taken out from the top of the distillation tower, and after condensation and cooling, a mixture of benzene and water is obtained. After liquid-liquid static separation, coking crude benzene and process wastewater are obtained respectively. Benzene and water are immiscible, and there is a certain density difference between them. Utilizing this characteristic, the two can be separated by standing still. In engineering applications, the mixture of benzene and water is injected into a liquid-liquid separation device, and under the action of gravity, the two gradually layer. The water with a larger density is at the lower layer, and the benzene with a smaller density is at the upper layer, thus realizing the separation.

[0003] In engineering applications, during the separation process of benzene and water, it is necessary to observe the actual separation effect of the two to avoid the occurrence of emulsification phenomenon affecting production. Therefore, a glass tube level gauge is generally equipped on the side wall of the oil-water separator, as shown in the appendix Figure 1 , and the oil-water interface in the separator is observed through this level gauge to judge the separation effect of benzene and water.

[0004] The glass tube level gauge utilizes the principle of communicating vessels and is independent of the side wall of the separator, which brings certain difficulties to the transportation of the equipment. Moreover, the medium in the glass tube is relatively static, and one of the resulting problems is freezing at low temperatures. Especially in the northern regions in winter, it is easy to freeze and crack the glass tube, causing the leakage of materials and easily triggering accidents. Currently, the most convenient and effective countermeasure is to empty the level gauge before the arrival of winter. Although this measure can avoid the occurrence of freezing and cracking phenomena, it is impossible to observe the separator interface, resulting in potential safety hazards. There are also some other measures, such as steam tracing or electric tracing outside the glass tube level gauge, but too large a temperature difference will also cause the glass tube to burst, and the construction of the outer heat preservation layer for tracing is also a very difficult problem.

[0005] The Chinese utility model patent with the application number 201821921339.5 discloses a protein precipitation supernatant separation device, which includes a precipitation tank and a gas source. The gas source is connected to the precipitation tank through a gas pipeline. The tank wall of the precipitation tank is provided with a feed pipe, a discharge pipe, a supernatant separator, and a viewing window. The supernatant separator includes a sleeve and a sampling pipe. The sleeve passes through the upper tank wall of the precipitation tank, and the sampling pipe passes through the sleeve. The sampling pipe is hermetically connected to the sleeve and can slide freely. The lower end of the sampling pipe in the precipitation tank is bent to be parallel to the horizontal plane. The pipe orifice of the sampling pipe in the precipitation tank is provided with an upper inclined cut surface of 30-60°. The pipe orifice of the sampling pipe outside the precipitation tank is provided with a diaphragm valve. Making the liquid level gauge integrated with the tank body can avoid the disadvantages of the exposed liquid level gauge, but there are problems of insufficient interface light and unclear observation. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a liquid-liquid separation device with a visible interface, overcoming the deficiencies of the prior art. The viewing window and the tank body are made into an integrated structure, and a spotlight is provided on the viewing window for illumination, so that this liquid-liquid separation device can be unaffected by the ambient temperature and light, and the separator interface can be observed throughout the year, ensuring accurate monitoring of the separation process of benzene and water in the production of crude benzene.

[0007] To achieve the above purpose, the present utility model is realized through the following technical solutions:

[0008] A liquid-liquid separation device with a visible interface includes a tank body and a viewing window. The tank body is a vertical tank body, with a mixture inlet provided in the middle, a light-phase outlet provided above the mixture inlet, and a heavy-phase outlet provided on the tank body. The heavy-phase outlet is communicated with the heavy-phase deposition area in the tank body. The length of the viewing window accounts for more than 30% of the height of the tank body. The viewing window includes a transparent safety glass sheet, a flange, and a gasket. The transparent safety glass sheet is located on the outer surface or the inner surface of the tank body. Gaskets and flanges are sequentially provided on both sides of the transparent safety glass sheet and are connected by bolts. One of the flanges is hermetically welded to the tank body, making the viewing window and the tank body form an integrated structure. One or two LED light strips are provided along the long side of the transparent safety glass sheet. The LED light strips are connected to the lighting power supply, and a lighting switch is provided near the viewing window.

[0009] Further, blue LED lamp beads or red LED lamp beads are installed on the LED light strips.

[0010] Further, the flange is rectangular or oblong.

[0011] Further, a heat tracing band or a heat preservation interlayer is provided on the surface of the tank body.

[0012] Further, the thickness of the transparent safety glass sheet is not less than 3 mm.

[0013] Further, the heavy-phase outlet is provided at the upper part of the tank body, and the inner side of the heavy-phase outlet is communicated with the heavy-phase deposition area in the tank body through a connecting pipe.

[0014] Further, 2-3 viewing windows are independently arranged in the height direction of the tank body, and there is partial overlap between adjacent viewing windows.

[0015] Further, the inside of the tank body includes at least a light-phase area, a mixing area and a heavy-phase area from top to bottom.

[0016] Further, the gasket is a neoprene gasket or a fluororubber gasket.

[0017] Further, sealant is applied between the gasket, the flange and the bolt.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1) The equipment of the present utility model has all the normal functions of a liquid-liquid separator, and at the same time is not affected by time and region. The separator interface can be observed at any time, and the interface is clear and easy to judge.

[0020] 2) The present utility model does not need to consider the temperature change, can effectively reduce the labor intensity of the operators, and reduce the occurrence of accidents.

[0021] 3) The viewing window of the present utility model is integrally designed with the separator, reducing transportation concerns and the risk of accidental damage. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a benzene-water separator in the prior art;

[0023] Figure 2 is a schematic structural diagram of an embodiment of the present utility model;

[0024] Figure 3 is Figure 2 a sectional view along line A-A in

[0025] Figure 4 a schematic diagram of the internal interface distribution of an embodiment of the present utility model.

[0026] In the figure: 1 - tank body, 2 - viewing window, 3 - mixture inlet, 4 - light-phase outlet, 5 - heavy-phase outlet, 6 - transparent safety glass sheet, 7 - flange, 8 - gasket, 9 - LED light strip, 10 - lighting switch, 11 - connecting pipe, 12 - glass tube liquid level gauge. Detailed Embodiments

[0027] The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the specific examples required for the description of the specific embodiments or the prior art. Obviously, the specific examples described below are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other specific examples can also be obtained based on these specific examples.

[0029] Generally, the components of the embodiments of the present invention described and shown in the specific examples here can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific examples is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention.

[0030] See Figures 2 - 4 , which is a schematic structural diagram of an embodiment of a liquid-liquid separation device with a visual interface of the present invention, including a tank body 1 and a viewing window 2. The tank body 1 is a vertical tank body 1, with a mixture inlet 3 provided in the middle thereof. Above the mixture inlet 3, a light-phase outlet 4 is provided. The tank body 1 is also provided with a heavy-phase outlet 5. The heavy-phase outlet 5 is provided in the upper part of the tank body 1, and the inside of the heavy-phase outlet 5 is connected to the heavy-phase sedimentation area in the tank body 1 through a connecting pipe 11. For more accurate observation, the length of the viewing window 2 should account for more than 30% of the height of the tank body 1. The viewing window 2 includes a transparent safety glass sheet 6, a flange 7, and a gasket 8. The transparent safety glass sheet 6 is located on the outer surface or the inner surface of the tank body 1. Gaskets 8 and flanges 7 are sequentially provided on both sides of the transparent safety glass sheet 6 and are connected by bolts. One of the flanges is hermetically welded to the tank body 1, so that the viewing window 2 and the tank body form an integral structure. Along the long side of the transparent safety glass sheet 6, one or two LED light strips 9 are provided. The LED light strips 9 are connected to a lighting power supply, and a lighting switch 10 is provided near the viewing window 2; under the irradiation of the LED light strips 9, the light acts on the light-phase liquid and the heavy-phase liquid respectively, generating a color difference, making the liquid-liquid interface prominent and easy to identify.

[0031] When the LED light strip is a blue LED lamp bead, the yellow crude benzene and the blue light synthesize green reflection, and the water reflects blue light under the blue light irradiation. Therefore, the interface between green and blue becomes clear. Similarly, when the LED light strip is a red LED lamp bead, the yellow crude benzene and the red light synthesize orange reflection, and the water reflects red light under the red light irradiation. Therefore, the interface between orange and red becomes clear.

[0032] In order to improve the strength and sealing performance of the viewing window, the flange 7 is rectangular or oblong. The thickness of the transparent safety glass sheet 6 is not less than 3 mm. The gasket 8 is a chloroprene rubber gasket or a fluororubber gasket. In order to improve the sealing performance, sealant is applied between the gasket 8, the flange 7, and the bolts.

[0033] For different production occasions, according to the technological requirements, a heat tracing band or a thermal insulation interlayer may be provided on the surface of the tank body 1 so that the mixture can be separated at the optimal temperature.

[0034] For particularly tall tank bodies, the safety of a single viewing window may be insufficient. Two or three viewing windows 2 may be independently provided in the height direction of the tank body 1, and adjacent viewing windows 2 partially overlap. Inside the tank body 1, from top to bottom, there are at least a light phase region in the upper part, a mixing region in the middle part, and a heavy phase region in the lower part. Multiple viewing windows can provide a more complete observation of each interface.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid-liquid separation device with a visual interface, comprising a tank body and a viewing window, wherein the tank body is a vertical tank body, wherein a mixture inlet is provided in the middle thereof, a light phase outlet is provided above the mixture inlet, and a heavy phase outlet is provided on the tank body, wherein the heavy phase outlet is connected to a heavy phase deposition area in the tank body, wherein: The length of the window accounts for more than 30% of the height of the tank body. The window includes a transparent safety glass sheet, a flange and a gasket. The transparent safety glass sheet is located on the outer surface of the tank body or the inner surface of the tank body. Gaskets and flanges are provided on both sides of the transparent safety glass sheet in sequence and are connected by bolts. One of the flanges is sealed and welded to the tank body so that the window and the tank body form an integrated structure. One or two LED light strips are provided along the long side of the transparent safety glass sheet. The LED light strips are connected to the lighting power supply, and a lighting switch is provided near the window.

2. A liquid-liquid separation device with a visual interface according to claim 1, characterized in that: The LED light strip is equipped with blue light LED lamp beads or red light LED lamp beads.

3. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: The flange is rectangular or oblong.

4. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: A heating belt or a heat-insulating interlayer is provided on the surface of the tank body.

5. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: The thickness of the transparent safety glass sheet is not less than 3 mm.

6. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: The heavy phase outlet is provided at the upper part of the tank body, and the inner side of the heavy phase outlet is connected with the heavy phase deposition area in the tank body through a connecting pipe.

7. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: The viewing windows are independently arranged in 2-3 numbers in the height direction of the tank body, and adjacent viewing windows are partially overlapped.

8. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: The tank body at least includes a light phase zone, a mixing zone and a heavy phase zone from top to bottom.

9. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: The gasket is a chloroprene rubber gasket or a fluororubber gasket.

10. The liquid-liquid separation device with a visual interface according to claim 1, characterized in that: Sealant is applied between the gasket, flange and bolts.

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