Oil-water separation and recovery device

Abstract

The utility model discloses an oil-water separation recovery device which comprises a vertically arranged tank body, a liquid inlet cavity and a separation cavity which are communicated with each other are arranged in an inner cavity of the tank body from top to bottom, the liquid inlet cavity is provided with a stock solution inlet, the separation cavity is provided with a recovery water outlet, and a separation assembly is arranged in the separation cavity. The separation assembly comprises a coalescer and a separator which are arranged from top to bottom, and an outlet of the separator is connected to the recovered oil outlet. The oil-water separation and recovery device provided by the utility model is simple in structure, small in occupied area due to the vertical design, very simple and convenient to operate and run and low in running cost; and the separation assembly adopts the design of a coalescer and a separator, so that the separation efficiency is high, no chemical agent needs to be added during operation, troublesome backflushing operation is also not needed, the recovery rate of oil and water is close to 100%, and the separation effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-water separation, and specifically relates to an oil-water separation and recovery device. Background Art

[0002] Oil pollution to the ecological environment has become a major public hazard to human society. At the same time, with the development of science and technology, the production process of many high-tech industries requires higher and higher precision control of the oil content of the working medium. For example, the reverse osmosis membrane (RO) stipulates that the oil content of its working medium must be less than 0.10ppm; the national standard (GB / T12145-1999) clearly stipulates that the oil content of medium and low pressure boiler water must be less than or equal to 1.0ppm, and the oil content of high pressure boiler water must be less than or equal to 0.3ppm. The main reason why the high-precision separation of oil and water has become a recognized global problem is the existence of fine oil droplets of emulsified oil. This has caused a large amount of water resources and energy loss and economic losses, and has affected the smooth application of many high-tech technologies, and is not conducive to the protection of the human ecological environment.

[0003] Many traditional oil-water separation technologies have the disadvantages of high investment, difficulty in adsorbent regeneration, low separation efficiency, and large floor space. In view of the above problems, the present utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an oil-water separation and recovery device which can effectively separate the oil and water in the oil-containing raw water and recover them respectively.

[0005] To achieve the above purpose, the technical solution of the utility model is:

[0006] An oil-water separation and recovery device comprises a vertically arranged tank body, wherein the inner cavity of the tank body is provided with a liquid inlet chamber and a separation chamber which are interconnected from top to bottom, the liquid inlet chamber is provided with a raw liquid inlet, the separation chamber is provided with a recovered water outlet, a separation assembly is provided in the separation chamber, the separation assembly comprises a coalescer and a separator which are arranged from top to bottom, and the outlet of the separator is connected to the recovered oil outlet.

[0007] Furthermore, the liquid inlet chamber is connected to the inlet of the coalescer.

[0008] Furthermore, a water distributor is provided between the liquid inlet chamber and the separation chamber, and a water outlet of the water distributor is connected to the inlet of the coalescer.

[0009] Furthermore, the separation assembly also includes a fixed plate, and the bottom end of the agglomerator and the top end of the separator are respectively connected to the fixed plate.

[0010] Furthermore, an oil collecting chamber is provided below the separation chamber, the outlet of the separator is connected to the oil collecting chamber, and the recovered oil outlet is provided at the bottom of the oil collecting chamber.

[0011] Furthermore, a drain outlet is provided near the recovered oil outlet.

[0012] Furthermore, the recovered water outlet is arranged near the bottom of the separation chamber.

[0013] Furthermore, an exhaust port is provided at the top of the liquid inlet cavity.

[0014] After adopting the above technical solution, the oil-water separation and recovery device provided by the utility model has the following beneficial effects compared with the prior art:

[0015] The oil-water separation and recovery device provided by the utility model has a simple structure, a vertical design that occupies a small area, is very easy to operate, and has low operating costs; the separation component is a design of a coalescer plus a separator, has a high separation efficiency, does not require the addition of any chemical agents during operation, and does not require troublesome backwashing operations. The recovery rate of oil and water is close to 100%, and the separation effect is good.

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the oil-water separation and recovery device of the utility model.

[0019] In the figure:

[0020] 1. Import of raw liquid;

[0021] 2. Recovered oil export;

[0022] 3. Recycled water outlet;

[0023] 4. Exhaust port;

[0024] 5. Drain outlet;

[0025] 6. Water distributor;

[0026] 7. Separator;

[0027] 8. Coalescer;

[0028] 9. Tank body; 91. Liquid inlet chamber; 92. Separation chamber; 93. Oil collecting chamber;

[0029] 10. Fixed plate.

[0030] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0032] like Figure 1 As shown, this embodiment provides an oil-water separation and recovery device, including a vertically arranged tank body 9, wherein the inner cavity of the tank body 9 is provided with a liquid inlet chamber 91 and a separation chamber 92 which are interconnected from top to bottom, the liquid inlet chamber 91 is provided with a raw liquid inlet 1, the top of the liquid inlet chamber 91 is provided with an exhaust port 4, the separation chamber 92 is provided with a recovered water outlet 3, and a separation assembly is provided in the separation chamber 92, the separation assembly includes a coalescer 8 and a separator 7 which are arranged from top to bottom, and the outlet of the separator 7 is connected to the recovered oil outlet 2. In this embodiment, the coalescer 8 and the separator 7 are both columnar or tubular arrays, and the extension direction of the coalescer 8 and the separator 7 is consistent with that of the tank body 9, so as to make full use of the space in the separation chamber 92.

[0033] In a preferred embodiment, the recovery water outlet 3 is disposed near the bottom of the separation chamber 92 to facilitate emptying of the water phase.

[0034] Furthermore, the liquid inlet chamber 91 is connected to the inlet of the coalescer 8, and the rest is isolated by a partition or other components, so that the raw liquid can directly enter the coalescer 8. Preferably, a water distributor 6 is provided between the liquid inlet chamber 91 and the separation chamber 92, and the water outlet of the water distributor 6 is connected to the inlet of the coalescer 8, so that each coalescer 8 can enter an equal amount of raw liquid, the oil-water separation is more uniform, and it is also beneficial to the maintenance of the equipment and prolongs the service life.

[0035] Further, in order to better fix the coalescer 8 and the separator 7, the separation assembly further includes a fixing plate 10, which is arranged between the separator 7 and the coalescer 8, and the bottom end of the coalescer 8 and the top end of the separator 7 are respectively connected and fixed to the fixing plate 10. Preferably, in order to make the structure of the separation assembly more stable and the force uniform, the coalescer 8 and the separator 7 have substantially the same size and are arranged at corresponding positions in the vertical projection direction.

[0036] In a preferred embodiment, an oil collecting chamber 93 is provided below the separation chamber 92, the outlet of the separator 7 is connected to the oil collecting chamber 93, and the recovered oil outlet 2 is provided at the bottom of the oil collecting chamber 93. Generally, the oil content in the original liquid is low, and it is more suitable for industrial application to collect the separated oil phase and discharge it uniformly. Furthermore, the oil collecting chamber 93 can be an independent container provided outside the tank body 9, or it can be provided integrally with the tank body 9, and those skilled in the art can provide it according to the actual situation of the installation site.

[0037] In a preferred embodiment, a drain port 5 is provided near the recovered oil outlet 2 to fully recover the oil phase and facilitate cleaning and maintenance of the equipment.

[0038] The working principle of this embodiment is as follows:

[0039] First, close the valves of the recovered oil outlet 2 and the recovered water outlet 3, open the valve of the exhaust port 4 on the top of the tank body 9, open the valve of the stock liquid inlet 1, and start injecting the stock liquid into the oil-water separation recovery device. When the tank body 9 is filled with the stock liquid, close the valve of the exhaust port 4, open the valves of the recovered oil outlet 2 and the recovered water outlet 3, and adjust the stock liquid inlet speed so that the inlet speed is basically consistent with the outlet speed of the recovered water pipe. Under normal circumstances, the inlet pressure should be greater than the outlet pressure. In this way, the stock liquid will enter the coalescer 8 under the action of gravity and water pressure and flow from the inside to the outside. When the stock liquid passes through the medium of the coalescer 8, the small droplets suspended in the continuous phase will gather together or coalesce, and the large droplets of non-polluting liquid and dispersed phase will flow to the separator 7 located below the coalescer 8, and the flow direction is from the outside to the inside. The medium of the separator 7 is hydrophobic, which can prevent the water phase from entering the separator 7. Only the oil phase fluid flows into the separator 7 and enters the oil collecting chamber 93 from the outlet of the separator 7 to be collected, while the water phase fluid is discharged through the recovery water outlet 3 arranged near the bottom of the separation chamber 92, thereby realizing oil-water separation. The oil and water are discharged and recovered separately by opening the valve.

[0040] After adopting the above technical solution, the oil-water separation and recovery device provided by the utility model has the following beneficial effects compared with the prior art:

[0041] The oil-water separation and recovery device provided by the utility model has a simple structure, a vertical design that occupies a small area, is very easy to operate, and has low operating costs; the separation component is a design of a coalescer plus a separator, has a high separation efficiency, does not require the addition of any chemical agents during operation, and does not require troublesome backwashing operations. The recovery rate of oil and water is close to 100%, and the separation effect is good.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. An oil-water separation and recovery device, characterized in that: It comprises a vertically arranged tank body, wherein the inner cavity of the tank body is provided with a liquid inlet chamber and a separation chamber which are interconnected from top to bottom, the liquid inlet chamber is provided with a raw liquid inlet, the separation chamber is provided with a recovered water outlet, a separation assembly is provided in the separation chamber, the separation assembly comprises a coalescer and a separator which are arranged from top to bottom, and the outlet of the separator is connected to the recovered oil outlet.

2. The oil-water separation and recovery device according to claim 1, characterized in that: The liquid inlet chamber is connected to the inlet of the coalescer.

3. The oil-water separation and recovery device according to claim 2, characterized in that: A water distributor is provided between the liquid inlet chamber and the separation chamber, and a water outlet of the water distributor is connected to the inlet of the coalescer.

4. The oil-water separation and recovery device according to claim 1, characterized in that: The separation assembly also includes a fixed plate, and the bottom end of the agglomerator and the top end of the separator are respectively connected to the fixed plate.

5. The oil-water separation and recovery device according to claim 1, characterized in that: An oil collecting chamber is arranged below the separation chamber, the outlet of the separator is connected to the oil collecting chamber, and the recovered oil outlet is arranged at the bottom of the oil collecting chamber.

6. The oil-water separation and recovery device according to claim 1, characterized in that: A drain port is arranged near the recovery oil outlet.

7. The oil-water separation and recovery device according to claim 1, characterized in that: The recovered water outlet is arranged near the bottom of the separation chamber.

8. The oil-water separation and recovery device according to claim 1, characterized in that: An exhaust port is arranged on the top of the liquid inlet cavity.

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