Liquid separation device

Abstract

The utility model relates to a liquid separation device. The liquid separation device comprises a liquid inlet unit, a layering unit, a liquid outlet unit and an observation component, the liquid inlet unit is connected with the layering unit; the layering unit comprises a layering device chamber with the bottom being a plane and a separation layer arranged in the layering device chamber. The number of the separation layers is at least two, and the heights of the two separation layers close to the liquid inlet unit are different; the liquid outlet unit comprises a first liquid outlet unit and a second liquid outlet unit; a liquid outlet of the first liquid outlet unit is formed in the bottom of the layering device chamber. According to the liquid separation device, the structure is simple, one liquid is automatically discharged through the density difference and the liquid pressure difference of different liquids, frequent manual operation is not needed, and the liquid separation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid separation, in particular to a liquid separation device, in particular to a liquid separation device for separating two liquids with different densities. Background Art

[0002] Photoinitiator, also known as photosensitizer or photocuring agent, is a type of compound that can absorb energy of a certain wavelength in the ultraviolet region (250-420nm) or visible region (400-800nm), generate free radicals, cations, etc., and initiate monomer polymerization, cross-linking and curing. Photoinitiator 184 is a highly efficient, non-yellowing ultraviolet curing initiator used to initiate UV polymerization reactions in unsaturated prepolymer systems.

[0003] The main crystallization solvent in the production of photoinitiator 184 is low-boiling petroleum ether, which has a boiling range of 60-90°C and a flash point of -30°C, and is extremely flammable and explosive. In production, the used petroleum ether is usually continuously distilled and desolventized for recovery. The distilled petroleum ether gas enters the condenser gas-liquid separator, and most of the petroleum ether vapor is condensed, but a small amount of petroleum ether gas enters the tail gas system and mixes with the condensed water, resulting in water in the recovered petroleum ether solvent, which affects production and use, and the water needs to be separated out.

[0004] When separating petroleum ether and water, the colors of the recovered petroleum ether and water are very similar, both are colorless, clear and transparent, and the interface is difficult to observe with the naked eye. When operating water separation, the operator must pay close attention to the sight glass. If the interface is not observed, a large amount of petroleum ether will be separated into the wastewater tank, and the water separation will be repeated, which is time-consuming and laborious. At the same time, such water separation operation has high requirements for operators, and often experienced employees with many years of work experience will make mistakes.

[0005] Therefore, it is crucial to develop a liquid separation device suitable for two liquids with close colors, especially suitable for separating petroleum ether and water. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a liquid separation device, which has a simple structure and utilizes the density difference and liquid pressure difference of different liquids to automatically discharge one of the liquids, does not require frequent manual operations, and has high liquid separation efficiency.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a liquid separation device, which comprises a liquid inlet unit, a stratification unit, a liquid outlet unit and an observation component;

[0009] The liquid inlet unit is connected to the stratification unit;

[0010] The stratification unit comprises a stratifier chamber with a flat bottom and a separation layer arranged inside the stratifier chamber;

[0011] The number of the partition layers is at least 2 (e.g., 3, 4, 5, etc.), wherein the heights of the two partition layers close to the liquid inlet unit are different;

[0012] The liquid outlet unit comprises a first liquid outlet unit and a second liquid outlet unit;

[0013] The liquid outlet of the first liquid outlet unit is arranged at the bottom of the stratifier chamber;

[0014] The liquid outlet of the first liquid outlet unit is arranged between the partition layer and the side wall of the stratifier chamber and between the two partition layers.

[0015] When separating two liquids of similar colors, such as petroleum ether and water, the colors of the recovered petroleum ether and water are very similar, both are colorless, clear and transparent, and the interface is difficult to observe with the naked eye. When operating water separation, the operator must pay close attention to observing the sight glass. Once the interface is not observed, a large amount of petroleum ether will be separated into the wastewater tank, and the water separation will be repeated, which is time-consuming and laborious. At the same time, such water separation operations have high requirements for operators, and old employees with many years of work experience often make mistakes.

[0016] In the utility model, the liquid separation device realizes automatic separation of two liquids of similar colors through a liquid inlet unit, a stratification unit, a liquid outlet unit and an observation component. The liquid separation device has a simple structure, utilizes the density difference and liquid pressure difference of different liquids to automatically discharge one of the liquids, does not require frequent manual operation, and has high liquid separation efficiency; specifically, taking petroleum ether and water as an example, a mixture of petroleum ether and water enters the stratification chamber in the stratification unit through the liquid inlet unit, and utilizes the density difference and liquid pressure difference between water and petroleum ether to automatically discharge water in the petroleum ether produced by the photoinitiator 184; in actual operation, a mixture of water and petroleum ether can enter the stratification unit uninterruptedly, and after the first batch of mixed liquids is allowed to stand and stratify, water is discharged from the lower layer, and petroleum ether is collected from the upper layer, and petroleum ether and water at the interface are retained in the stratification unit. After the next batch of mixed liquids enters the stratification unit, the system is dynamically balanced before the next liquid separation, and this is repeated many times, thereby realizing the continuous post-processing process in the production of the photoinitiator 184, without the need for concentrated manpower to handle the recovery of the mixed liquid, thereby improving production efficiency.

[0017] Preferably, the height of the liquid inlet in the liquid inlet unit is between the heights of two separation layers close to the liquid inlet unit.

[0018] In the utility model, the height of the liquid inlet in the liquid inlet unit can be set according to actual needs. It is preferably set between the heights of the two partition layers close to the liquid inlet unit because if its height is too high, in actual operation, if the liquid inlet speed is too fast, there may be a risk of the mixed liquid flushing into the second liquid outlet unit.

[0019] Preferably, the height of the liquid outlet of the second liquid outlet unit is higher than the height of the partition layer adjacent to the liquid outlet of the second liquid outlet unit.

[0020] In the utility model, the height of the liquid outlet of the second liquid outlet unit is set to be higher than the height of the partition layer adjacent to the liquid outlet of the second liquid outlet unit. The reason is that: this setting method can ensure that when the liquid inlet speed is fast, even if the liquid outlet of the second liquid outlet unit is open, there will be no risk of material impact, which is conducive to realizing full process automation.

[0021] Preferably, the height of the separation layer first adjacent to the liquid inlet unit is higher than the height of the separation layer second adjacent to the liquid inlet unit.

[0022] Preferably, the height of the separation layer decreases from the liquid inlet unit to the liquid outlet unit.

[0023] In the utility model, the height of the separation layer of the liquid separation device adjacent to the first liquid inlet unit is higher than that of the separation layer adjacent to the second liquid inlet unit. A further preferred solution is that the height of the separation layer decreases successively from the liquid inlet unit to the liquid outlet adjacent to the second liquid outlet unit. The purpose of setting two or more separation layers is to divide the stratified unit into three or more sedimentation systems. By setting the height gradient of the separation layer, after the first stage of sedimentation, the accumulated amount of petroleum ether in the upper part exceeds the partition and will continuously overflow to the second stage of sedimentation. Similarly, when the second stage is full, it will overflow to the third stage, and so on. The purpose of this setting is to extend the sedimentation time through a multi-stage system to better separate petroleum ether and water, thereby playing a buffering role.

[0024] Preferably, the height of the liquid outlet of the second liquid outlet unit is at least equal to the height of the liquid inlet in the liquid inlet unit.

[0025] In the utility model, the height of the liquid outlet of the second liquid outlet unit is ≥ the height of the liquid inlet in the liquid inlet unit. This arrangement ensures that the risk of material impact is unlikely to occur when the liquid outlet of the second liquid outlet unit is open, and it is easier to realize full process automation and improve production efficiency.

[0026] Preferably, the liquid outlets of the first liquid outlet units are each independently connected to a drain pipe and a collection pipe.

[0027] Preferably, the height of the collecting pipe is higher than the height of the partition layer second adjacent to the liquid inlet unit.

[0028] Preferably, an observation component is also provided on the collection pipe.

[0029] Preferably, the observation component is a perspective window.

[0030] In the present invention, it is preferred that the observation component is a perspective window to preliminarily judge the extent of the liquid separation process.

[0031] Preferably, the liquid inlet unit is also connected to a reaction device.

[0032] Preferably, the liquid inlet unit is connected to a waste liquid treatment unit of the reaction device.

[0033] Preferably, the liquid separation device further comprises a control unit.

[0034] Preferably, the control unit comprises a liquid level control component;

[0035] The liquid inlet unit, the stratification unit and the liquid outlet unit are each independently provided with a liquid level control component

[0036] In the utility model, the liquid separation device adjusts each liquid inlet and liquid outlet through the liquid level control component of the control unit, thereby adjusting the height of the middle stratifier chamber to achieve separation of two liquids.

[0037] In the present utility model, the operation method of the liquid separation device is as follows:

[0038] In the utility model, the liquid separation device realizes automatic separation of two liquids of similar colors through a liquid inlet unit, a stratification unit, a liquid outlet unit and an observation component. The liquid separation device has a simple structure, utilizes the density difference and liquid pressure difference of different liquids to automatically discharge one of the liquids, does not require frequent manual operation, and has high liquid separation efficiency; specifically, taking petroleum ether and water as an example, a mixture of petroleum ether and water enters the stratification chamber in the stratification unit through the liquid inlet unit, and utilizes the density difference and liquid pressure difference between water and petroleum ether to automatically discharge water in the petroleum ether produced by the photoinitiator 184; in actual operation, a mixture of water and petroleum ether can enter the stratification unit uninterruptedly, and after the first batch of mixed liquids is allowed to stand and stratify, water is discharged from the lower layer, and petroleum ether is collected from the upper layer, and petroleum ether and water at the interface are retained in the stratification unit. After the next batch of mixed liquids enters the stratification unit, the system is dynamically balanced before the next liquid separation, and this is repeated many times, thereby realizing the continuous post-processing process in the production of the photoinitiator 184, without the need for concentrated manpower to handle the recovery of the mixed liquid, thereby improving production efficiency.

[0039] Furthermore, each individual stratifier chamber formed by the separation layer can be operated simultaneously or individually through a control unit of the liquid outlet of the first liquid outlet unit.

[0040] Specifically, the working principle of the liquid separation device is:

[0041] In the utility model, the purpose of setting two or more separation layers is to divide the layered unit into three or more sedimentation systems. By setting the height gradient of the separation layer, after the first stage of sedimentation, the amount of petroleum ether in the upper part exceeds the partition and will continuously overflow to the second stage of sedimentation. Similarly, after the second stage is full, it will overflow to the third stage, and so on. The purpose of this setting is to extend the sedimentation time through the multi-stage system to better separate petroleum ether and water, and play a buffering role. In addition, the height of the liquid inlet and outlet in the system and the setting of the control unit ensure that the liquid separation device can achieve stable and efficient operation in various practical operations, saving labor costs.

[0042] In the utility model, the liquid separation device is suitable for automatically separating two liquids with similar colors and a certain density difference, and can achieve a relatively excellent liquid separation effect.

[0043] Compared with the prior art, the utility model has the following beneficial effects:

[0044] (1) In the utility model, the liquid separation device has a simple structure and utilizes the density difference and liquid pressure difference of different liquids to automatically discharge one of the liquids. Frequent manual operation is not required and the liquid separation efficiency is high.

[0045] (2) In the present invention, the liquid separation device is used for the mixed liquid of petroleum ether and water formed in the production process of the photoinitiator 184. The two liquids have similar colors, but the operator does not need to concentrate highly to perform manual liquid separation, thus avoiding the waste of manpower caused by repeated water separation and improving the liquid separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic structural diagram of the liquid separation device described in Example 1;

[0047] Figure 2 is a working principle diagram of the liquid separation device described in Example 1;

[0048] Among them, 1-liquid inlet unit; 2-liquid inlet; 3-separation layer; 4-first liquid outlet unit; 5-drainage pipeline; 6-collection pipeline; 7-second liquid outlet unit; 8-second liquid collecting device; 9-observation component; 10-first liquid collecting device; 11-petroleum ether layer; 12-water layer. DETAILED DESCRIPTION

[0049] To facilitate understanding of the present invention, the present invention is listed in the following embodiments. Those skilled in the art should understand that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0050] Example 1

[0051] This embodiment provides a liquid separation device, and its structural schematic diagram is as follows Figure 1 As shown, the liquid separation device includes a liquid inlet unit 1, a stratification unit, a liquid outlet unit and an observation component;

[0052] The liquid inlet unit is connected to the stratification unit;

[0053] The delamination unit comprises a delamination chamber with a flat bottom and a separation layer 3 arranged inside the delamination chamber;

[0054] The number of the partition layers is 2, wherein the heights of the two partition layers close to the liquid inlet unit are different;

[0055] The liquid outlet unit comprises a first liquid outlet unit 4 and a second liquid outlet unit 7;

[0056] The liquid outlet of the first liquid outlet unit is arranged at the bottom of the stratifier chamber;

[0057] The liquid outlet of the first liquid outlet unit is arranged between the partition layer and the side wall of the stratifier chamber and between the two partition layers;

[0058] The liquid outlet of the second liquid outlet unit is at the same height as the liquid inlet 2 in the liquid inlet unit, and is between the heights of the two separation layers close to the liquid inlet unit.

[0059] The second liquid outlet unit is connected to a second liquid collecting device 8 .

[0060] The height of the separation layer which is first adjacent to the liquid inlet unit is higher than the height of the separation layer which is second adjacent to the liquid inlet unit.

[0061] The liquid outlets of the first liquid outlet units are independently connected to a drain pipe 5 and a collection pipe 6 .

[0062] The height of the collecting pipe is between the heights of the two separation layers close to the liquid inlet unit.

[0063] The collecting pipe is also provided with an observation component 9; the observation component is a perspective window, and a first liquid collecting device 10 is connected to the end thereof.

[0064] The liquid inlet unit is also connected to the reaction device; the liquid inlet unit is connected to the waste liquid treatment unit of the reaction device.

[0065] The liquid separation device further comprises a control unit; the control unit comprises a liquid level control component; the liquid inlet unit, the stratification unit and the liquid outlet unit are each independently provided with a liquid level control component.

[0066] In this embodiment, the specific operation process of the liquid separation device is as follows:

[0067] Taking petroleum ether and water as an example, the mixture of petroleum ether and water enters the stratification chamber in the stratification unit through the liquid inlet unit, and the density difference and liquid pressure difference between water and petroleum ether are used to automatically discharge the water in the petroleum ether produced by the photoinitiator 184; in actual operation, the mixture of water and petroleum ether can enter the stratification unit uninterruptedly, and the first batch of the mixture is left to stand for stratification, and the water is discharged from the lower layer, and the petroleum ether is collected from the upper layer. The petroleum ether and water at the interface are retained in the stratification unit. After the next batch of the mixture enters the stratification unit, the system is dynamically balanced before the next liquid separation. This is repeated many times, so that the post-processing process in the production of the photoinitiator 184 is continuously carried out, and there is no need to concentrate manpower to handle the recovery of the mixed liquid, thereby improving production efficiency. Furthermore, each separate stratification chamber formed by the partition layer can realize simultaneous or separate operation through the control unit of the liquid outlet of the first liquid outlet unit.

[0068] The specific working principle is Figure 2 For example, the mixed liquid enters the separator chamber and is divided into a petroleum ether layer 11 with a height of h1 and a water layer 12 with a height of h2. During the separation process, the water in the water layer enters the first liquid collecting device through a collecting pipe with a height of h3. According to the physical formula: 石油醚 gh1+ρ 水 gh2≈ρ 水 gh3; From this formula, we can know that the mixed liquid enters the stratification unit from the liquid inlet, and after two sedimentation, the whole system is in a state of dynamic equilibrium. What is collected through the collection pipe is water, and petroleum ether is collected from the corresponding liquid outlet.

[0069] In this embodiment, the liquid separation device has a simple structure and utilizes the density difference and liquid pressure difference of different liquids to automatically discharge one of the liquids. Frequent manual operations are not required and the liquid separation efficiency is high.

[0070] Example 2

[0071] The difference between this embodiment and embodiment 1 is that the number of the separation layers is 4, and the height of the separation layers decreases from the liquid inlet unit to the liquid outlet of the second liquid outlet unit, and the rest is the same as embodiment 1.

[0072] Example 3

[0073] The difference between this embodiment and embodiment 1 is that the height of the liquid outlet of the second liquid outlet unit is higher than the partition layer adjacent to the liquid inlet unit, the number of the partition layers is 3, and the height of the partition layer decreases from the liquid inlet unit to the liquid outlet adjacent to the second liquid outlet unit, and the rest is the same as embodiment 1.

[0074] The applicant declares that the utility model uses the above-mentioned embodiments to illustrate the detailed method of the utility model, but the utility model is not limited to the above-mentioned detailed method, that is, it does not mean that the utility model must rely on the above-mentioned detailed method to be implemented. The technicians in the relevant technical field should understand that any improvement of the utility model, the equivalent replacement of the raw materials of the utility model product, the addition of auxiliary components, the selection of specific methods, etc., all fall within the protection scope and disclosure scope of the utility model.

Claims

1. A liquid separation device, characterized in that: The liquid separation device comprises a liquid inlet unit, a stratification unit, a liquid outlet unit and an observation component; The liquid inlet unit is connected to the stratification unit; The stratification unit comprises a stratifier chamber with a flat bottom and a separation layer arranged inside the stratifier chamber; The number of the separation layers is at least 2, wherein the heights of the two separation layers close to the liquid inlet unit are different; The liquid outlet unit comprises a first liquid outlet unit and a second liquid outlet unit; The liquid outlet of the first liquid outlet unit is arranged at the bottom of the stratifier chamber; The liquid outlet of the first liquid outlet unit is arranged between the partition layer and the side wall of the stratifier chamber and between the two partition layers.

2. The liquid separation device according to claim 1, characterized in that: The height of the liquid inlet in the liquid inlet unit is between the heights of the two separation layers adjacent to the liquid inlet unit; The height of the liquid outlet of the second liquid outlet unit is higher than the height of the partition layer adjacent to the liquid outlet of the second liquid outlet unit; The height of the separation layer which is first adjacent to the liquid inlet unit is higher than the height of the separation layer which is second adjacent to the liquid inlet unit.

3. The liquid separation device according to claim 1, characterized in that: The height of the liquid outlet of the second liquid outlet unit is at least equal to the height of the liquid inlet in the liquid inlet unit.

4. The liquid separation device according to claim 1, characterized in that: The liquid outlets of the first liquid outlet units are each independently connected to a drain pipe and a collection pipe.

5. The liquid separation device according to claim 4, characterized in that: The height of the collecting pipe is higher than the height of the partition layer which is second adjacent to the liquid inlet unit.

6. The liquid separation device according to claim 4, characterized in that: The collecting pipe is also provided with an observation component.

7. The liquid separation device according to claim 6, characterized in that: The observation component is a perspective window.

8. The liquid separation device according to claim 1, characterized in that: The liquid inlet unit is also connected to the reaction device.

9. The liquid separation device according to claim 8, characterized in that: The liquid inlet unit is connected to the waste liquid treatment unit of the reaction device.

10. The liquid separation device according to claim 1, characterized in that: The liquid separation device also includes a control unit; The control unit includes a liquid level control component; The liquid inlet unit, the stratification unit and the liquid outlet unit are each independently provided with a liquid level control component.

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