Equipment for automatically separating solids in oil phase and water phase

Abstract

The utility model relates to equipment for automatically separating solids in oil and water phases, which comprises an oil-water separation tank, the upper section of the oil-water separation tank is externally connected with a mixed liquid inlet pipeline, the top of the oil-water separation tank is externally connected with an oil discharge pipeline, the bottom of the oil-water separation tank is externally connected with a water discharge pipeline, at least one interface control valve is arranged on the water discharge pipeline at the bottom, and an interface line is arranged in the oil-water separation tank. A liquid level meter sensor and a remote transmission interface instrument are arranged at the position of an interface line, a suspended matter discharging outlet is formed in the oil-water separation tank and located below the interface line, the suspended matter discharging outlet is externally connected with a suspended matter section discharging pipe, and a pressure difference transmitter and a pressure difference instrument are arranged on the suspended matter section discharging pipe. The suspended matter section discharging pipe is connected to the water discharging pipeline through a liquid discharging pipeline, and the liquid discharging pipeline is sequentially provided with an opening adjusting valve, filtering equipment and a switching valve in the liquid discharging direction. According to the utility model, suspended solids can be discharged, the blocking risk caused by enrichment of the suspended solids is avoided, and meanwhile, secondary pollution and oil phase product loss are not caused.

Description

Technical Field

[0001] The utility model relates to the technical field of fine chemical industry, in particular to a device for automatically separating solids in oil-water two phases. Background Art

[0002] In the process of continuous reaction of heterogeneous microfluids, an oil-water two-phase separation tank is often set up. The reaction liquid is fed from the middle of the separation tank, and the oil phase and the water phase are separated. The oil phase flows out from the top of the tank, and the water phase is extracted from the bottom of the tank. If a small amount of solid by-products with a density between the oil and water phases are entrained in the reaction liquid, the solid by-products will be suspended at the interface between the oil phase and the water phase. Because it is a continuous production, the oil phase is continuously discharged from the top of the separation tank, and the water phase is continuously discharged from the bottom of the separation tank. The solid suspended matter in the middle cannot be discharged and will gradually enrich at the interface. Enrichment to a certain stage will affect the quality and stability of the product. At present, the common practice is to lead a section of pipeline below the interface for regular manual discharge. This method has two disadvantages: 1. It requires manual judgment of the drainage time, which is easy to cause the upper product oil phase to be discharged too much, increasing losses. 2. The discharge of solid suspended matter is prone to secondary pollution. Utility Model Content

[0003] In view of the above problems, the utility model provides a device for automatically separating solids in oil-water two phases, which can discharge suspended solids regularly, automatically and under closed conditions.

[0004] To achieve the above purpose, the following technical scheme is adopted: an equipment for automatically separating solids in oil and water phases, including an oil-water separation tank, the upper part of the oil-water separation tank is externally connected to a mixed liquid inlet pipeline, the top is externally connected to an oil discharge pipeline, the bottom is externally connected to a drainage pipeline, at least one boundary control valve is arranged on the drainage pipeline at the bottom, a boundary line is set in the oil-water separation tank, a liquid level sensor and a remote boundary instrument are arranged at the boundary line position, a suspended matter discharge outlet is arranged on the oil-water separation tank, the suspended matter discharge outlet is located below the boundary line, the suspended matter discharge outlet is externally connected to a suspended matter section discharge pipe, a pressure differential transmitter and a pressure differential instrument are arranged on the suspended matter section discharge pipe, the suspended matter section discharge pipe is connected to the drainage pipeline through a discharge pipeline, and an opening regulating valve, a filtering device and a switch valve are arranged in sequence along the discharge direction of the discharge pipeline.

[0005] Furthermore, the suspended matter section discharge pipe is arranged vertically.

[0006] Furthermore, the height difference between the upper and lower pressure measuring points of the differential pressure instrument is 0.5m-3m.

[0007] Furthermore, a sight glass is provided in the middle section of the suspended matter discharge pipe.

[0008] Furthermore, the remote transmission interface position instrument is a magnetic flap interface position meter.

[0009] Furthermore, the filtering equipment is two quick-opening pipe filters sealed with clamps, and manual ball valves are respectively provided at the front and the back, one for use and one for backup on the drainage pipeline for easy cleaning.

[0010] The beneficial effects of the utility model are as follows: the utility model sets and judges the discharge time node of suspended matter through the remote transmission interface instrument, judges the discharge situation of suspended matter from the pressure difference in the discharge pipe of the suspended matter section, and controls the coordination of various valves through the system to discharge the suspended matter regularly, automatically and under closed conditions, thereby avoiding the risk of blockage caused by the enrichment of suspended matter to the greatest extent, and at the same time will not cause secondary pollution and will not cause loss of oil phase products. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of an embodiment of the present invention.

[0012] As shown in the figure: 1. Oil-water separation tank; 2. Interface control valve; 3. Liquid level gauge sensor; 4. Remote interface instrument; 5. Differential pressure transmitter; 6. Differential pressure instrument; 7. Sight glass; 8. Opening regulating valve; 9. Filter equipment; 10. Switch valve; 100. Mixed liquid inlet pipeline; 200. Oil discharge pipeline; 300. Drainage pipeline; 400. Suspended matter section discharge pipe; 500. Drainage pipeline. DETAILED DESCRIPTION

[0013] Example 1

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0015] like Figure 1 The invention provides a device for automatically separating solids in oil and water phases, comprising an oil-water separation tank 1, wherein the upper section of the oil-water separation tank 1 is externally connected to a mixed liquid inlet pipeline 100, the top is externally connected to an oil discharge pipeline 200, and the bottom is externally connected to a drainage pipeline 300, and at least one interface control valve 2 is arranged on the drainage pipeline 300 at the bottom, and the oil-water mixed liquid enters the oil-water separation tank 1 from the mixed liquid inlet pipeline 100. After liquid separation, the oil phase liquid is discharged from the top of the oil-water separation tank 1 through the oil discharge pipeline 200, and the water phase liquid is discharged from the oil-water separation tank 1 through the drainage pipeline 300. A interface line is set in the oil-water separation tank 1, and a liquid level sensor 3 and a remote interface meter 4 are arranged at the interface line position. The interface of the water phase is adjusted by the interface control valve 2 to discharge the water phase liquid, and the remote interface meter 4 adopts a magnetic flap interface meter.

[0016] A suspended matter discharge outlet is arranged on the oil-water separation tank 1, and the suspended matter discharge outlet is located below the boundary line. The suspended matter discharge outlet is externally connected to a vertically arranged suspended matter section discharge pipe 400. A differential pressure transmitter 5 and a differential pressure instrument 6 are arranged on the suspended matter section discharge pipe 400, and a sight glass 7 is arranged in the middle section. The height difference between the upper and lower pressure measuring points of the differential pressure instrument 6 is controlled within the range of 0.5m-3m. The suspended matter section discharge pipe 400 is connected to the drainage pipeline 300 through a drainage pipeline 500. The drainage pipeline 500 is sequentially provided with an opening regulating valve 8, a filtering device 9 and a switch valve 10 along the drainage direction. The filtering device 9 is two quick-opening pipeline filters sealed with clamps, and manual ball valves are respectively arranged at the front and rear, one for use and one for reserve on the drainage pipeline 500, which is convenient for cleaning.

[0017] The working principle of this embodiment is: using the density difference between the oil phase and the water phase to automatically cut the liquid, compiling a set of control programs integrated into the control system to cooperate with the operation of the equipment, setting when the water phase interface is higher than the suspended matter discharge outlet, the external discharge program can be started.

[0018] In order to realize automatic discharge of suspended solids, the remote transmission interface instrument 4 is set to control the water phase interface to be higher than the height of the suspended solid discharge outlet. During automatic discharge, the opening regulating valve 8 and the switch valve 10 are fully opened first, and the water phase is discharged. At this time, the pressure difference of the differential pressure transmitter 5 is: water phase density × height × gravity acceleration. At the beginning, this value is a stable value. When this value begins to decrease, it means that the oil phase has entered the suspended solid section discharge pipe 400. At this time, the opening of the opening regulating valve 8 is automatically adjusted to decrease, allowing the water phase liquid to be slowly discharged. When the pressure difference decreases to a certain value and no longer changes, it means that the oil phase liquid has filled the pipeline at this time. After a delay of 10-30s, the opening regulating valve 8 and the switch valve 10 are automatically closed.

[0019] In actual operation, the interval time of regular external discharge operation can be set in the control program according to the amount of solid suspended matter produced. At the same time, according to the external discharge amount of solid suspended matter, the quick-opening pipe filter in the filter device 9 is manually switched regularly, and the filter element is removed to clean the intercepted solid suspended matter. It should be noted that: when an external discharge cycle begins, because the interface regulating valve 2 is to maintain the water phase interface of the oil-water separation tank 1, the interface control valve 2 will automatically be in the minimum opening state at this time, and will automatically adjust to the initial interface state. When the interface is restored, the oil phase liquid in the suspended matter section discharge pipe 400 will automatically return to the oil-water separation tank 1.

[0020] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. An apparatus for automatically separating solids from oil and water phases, comprising an oil-water separation tank (1), wherein the upper portion of the oil-water separation tank (1) is externally connected to a mixed liquid inlet pipeline (100), the top portion is externally connected to an oil discharge pipeline (200), the bottom portion is externally connected to a drainage pipeline (300), and at least one boundary control valve (2) is arranged on the drainage pipeline (300) at the bottom, characterized in that: A boundary line is set in the oil-water separation tank (1), a liquid level sensor (3) and a remote boundary instrument (4) are arranged at the position of the boundary line, a suspended matter discharge outlet is arranged on the oil-water separation tank (1), the suspended matter discharge outlet is located below the boundary line, the suspended matter discharge outlet is externally connected to a suspended matter section discharge pipe (400), a differential pressure transmitter (5) and a differential pressure instrument (6) are arranged on the suspended matter section discharge pipe (400), the suspended matter section discharge pipe (400) is connected to a drainage pipeline (300) through a drainage pipeline (500), and an opening regulating valve (8), a filtering device (9) and a switch valve (10) are arranged in sequence on the drainage pipeline (500) along the drainage direction.

2. The device for automatically separating solids from oil-water phases according to claim 1, characterized in that: The suspended matter section discharge pipe (400) is arranged vertically.

3. The device for automatically separating solids from oil-water phases according to claim 2, characterized in that: The height difference between the upper and lower pressure measuring points of the differential pressure meter (6) is 0.5m-3m.

4. The device for automatically separating solids from oil-water phases according to claim 3, characterized in that: A sight glass (7) is provided in the middle section of the suspended matter discharge pipe (400).

5. The device for automatically separating solids from oil-water phases according to claim 4, characterized in that: The remote transmission interface position meter (4) is a magnetic flap interface position meter.

6. The device for automatically separating solids from oil-water phases according to claim 5, characterized in that: The filtering equipment (9) is two quick-opening pipeline filters sealed with clamps, and manual ball valves are respectively arranged at the front and rear, one for use and the other for standby on the drainage pipeline (500), which is convenient for cleaning.

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