CN108862688A - A kind of central tube cyclonic separation settler - Google Patents

Abstract

The invention discloses a central cylinder cyclone separation and sedimentation device, which comprises a tank body, a broken siphon port, a slag discharge port, an oil discharge port, an overflow port, an inverted U-shaped overflow pipe, an upper filter plate, a manhole, a lower filter Plate, water inlet pipe, backwash water distribution pipe, sewage outlet, central pipe breathing hole, breathing port, slag collection tank, oil collection tank, water outlet pipe, water outlet water collection pipe, filter material, central pipe, water distribution pipe on swirl cone, swirl flow Cone, backwash port, central pipe sewage outlet; the invention can effectively ensure the distance between the water outlet collection pipe, that is, the water outlet layer, and the uppermost liquid level scum and oil slick layer, avoid the mutual influence of mud, oil and water, and have higher separation efficiency; invention Utilize the layered sedimentation characteristics of sludge to ensure the sinking efficiency of sludge, and at the same time, the sludge layer can effectively intercept tiny suspended matter to ensure that clear water floats; the invention sets the swirl cone at the lower part of the central pipe, and The water is discharged from the upper part, and the water is directed towards the surroundings of the tank to ensure that the water flow is in a state of radial flow and increase the advection and sedimentation effect of the water.

Description

A central cylinder cyclone separation and sedimentation device

technical field

The invention belongs to the technical field of environmental protection equipment, and relates to a central cylinder high-efficiency cyclone separation device, in particular to a central cylinder cyclone separation and sedimentation device for solid-liquid separation of sewage treatment in the petrochemical industry.

Background technique

The invention and application of the cyclone separator was originally used for solid-liquid separation and liquid-liquid separation in the beneficiation process. It has been about one and a half centuries, and it has been widely used in solid-liquid, liquid-liquid, gas-liquid and gas-solid field of separation. With the development of cyclone separation technology, water treatment industry and increasingly stringent environmental requirements, various cyclone separators have emerged as the times require. Among them, the hydrocyclone, as a new type of oilfield produced water treatment equipment, stands out in the petroleum industry because of its compact structure, light weight, high efficiency, high space utilization, simple process, and low cost. Years of scientific research experience, engineering practice and field application results show that there is technical feasibility, economic necessity and broad prospects for engineering application of cyclone separation technology in the field of oil-water and solid-liquid separation.

In terms of oily sewage treatment, the control index of suspended solids is very strict. Oilfield sewage, especially oilfield produced water, is mostly used for reinjection, and suspended solids in reinjected water are one of the main reasons for formation blockage and oil pipeline blockage. The existence of oil in oily sewage makes it difficult to effectively separate suspended solids from liquids Therefore, in the treatment of oily sewage, higher requirements are put forward for solid-liquid separation technology. The traditional gravity sedimentation removal technology has a long operation time, is greatly affected by the fluctuation of water quality and quantity, and the effluent water quality is unstable. At present, it cannot meet the treatment requirements of oily sewage.

Contents of the invention

In order to solve the above technical problems, the present invention provides a central cylinder cyclone sedimentation separation device, which improves the efficiency of solid-liquid separation, realizes the continuous and stable operation of cyclone separation and the stable standard of effluent water quality.

The technical solution adopted in the present invention is: a central cylinder swirl separation and sedimentation device, which is characterized in that it includes a tank body, a slag discharge port, an oil discharge port, an upper filter plate, a manhole, a lower filter plate, a water inlet pipe, and a sewage discharge port. mouth, central pipe breathing hole, breathing port, slag collection tank, oil collection tank, outlet pipe, water outlet collection pipe, filter material, center pipe, water distribution pipe on swirl cone, swirl cone, center pipe sewage outlet;

The lower part of the outer wall of the tank is provided with a water inlet pipe, the upper part is provided with a water outlet pipe, a slag discharge port, an oil discharge port, an overflow port, and a breathing port, the lower part is provided with a sewage outlet, and the middle and upper part is provided with a manhole;

The center of the inner cavity of the tank is provided with a central pipe; the central pipe is provided with an outlet water collection pipe between the tank body and the upper filter plate, and the water in the tank enters the central pipe through the water collection pipe. When the liquid level reaches the set value Finally, it is discharged through the outlet pipe; the central pipe is provided with a central pipe sewage outlet, which is located at the bottom of the tank body; the upper part of the central pipe is provided with a central pipe breathing hole;

The upper part of the inner cavity of the tank is provided with an upper filter plate and a lower filter plate, and filter material is filled between the upper filter plate and the lower filter plate; The chambers between the filter plate and the upper and lower filter plates are connected; the upper filter plate and the lower filter plate are evenly provided with filter holes of appropriate pore size to ensure good hydraulic conditions;

The middle and lower part of the inner cavity of the tank is provided with a swirl cone, and the upper part of the swirl cone is provided with a water distribution pipe on the swirl cone; the water to be treated enters the inner cavity of the tank from the water inlet pipe through the swirl cone;

The upper part of the tank body is provided with a slag collection tank and an oil collection tank, and the fine suspended matter and oil in the upper part of the tank body are introduced into the slag discharge port and the oil discharge port respectively through the slag collection tank and the oil collection tank , discharged periodically.

The beneficial effect that the present invention has based on its technical scheme is:

(1) The present invention adopts the central pipe water outlet mode, and the water outlet level is constant self-flowing water, which can effectively ensure the distance between the outlet water collection pipe, that is, the water outlet layer and the uppermost liquid level scum and oil slick layer, and avoid the mutual influence of mud, oil and water , higher separation efficiency;

(2) The present invention arranges that the swirl cone is located at the bottom of the central pipe, and the water outlet from the lower part of the swirl cone is a mud phase with a higher density. The sedimentation characteristics of the layer ensure the sinking efficiency of the sludge. At the same time, the sludge layer can effectively intercept the tiny suspended matter and ensure the clear water to float;

(3) The present invention arranges that the swirl cone is positioned at the bottom of the center pipe, and the upper part of the swirl cone discharges water, and its discharge water faces around the tank body, so as to ensure that the water flow is in the state of radial flow rising, and the advection sedimentation effect of increasing the discharge water is improved.

Description of drawings

Figure 1: Structural sectional view of an embodiment of the present invention.

Detailed ways

The technical solution is further described in conjunction with reference to the accompanying drawings, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions, but the description is only used It is used for explaining the present invention, but should not be construed as limiting the present invention.

Please see Figure 1, a central cylinder cyclone separation and sedimentation device provided by the present invention includes a tank body 1, a broken siphon port 2, a slag discharge port 3, an oil discharge port 4, an overflow port 5, and an inverted U-shaped overflow pipe 6. Upper filter plate 7, manhole 8, lower filter plate 9, water inlet pipe 10, backwash distribution pipe 11, sewage outlet 12, central pipe breathing hole 13, breathing port 14, slag collecting tank 15, oil collecting tank 16, outlet Water pipe 17, outlet water collection pipe 18, filter material 19, center pipe 20, water distribution pipe 21 on the swirl cone, swirl cone 22, backwash port 23, center pipe sewage outlet 24; the middle and lower part of the outer wall of the tank body 1 is provided with a water inlet pipe 10. The upper part is provided with a water outlet pipe 17, the slag discharge port 3, the oil discharge port 4, the overflow port 5, and the breathing port 14, the lower part is provided with a sewage discharge port 12, and the middle and upper part is provided with a manhole 8; the center of the inner cavity of the tank body 1 is provided with a Central pipe 20; the central pipe 20 is provided with an outlet water collection pipe 18 between the tank body 1 and the upper filter plate 7, the water in the tank body 1 enters the central pipe 20 through the water collection pipe 18, and finally passes through the water when the liquid level reaches the set value. The outlet pipe 17 is removed; the central pipe 20 is provided with a central pipe sewage outlet 24, which is located at the bottom of the tank body 1; the upper part of the central pipe 20 is provided with a central pipe breathing hole 13; the upper part of the tank body 1 is provided with an upper filter plate 7, a lower filter Plate 9, filter material 19 is filled between the upper filter plate 7 and the lower filter plate 9; the upper part of the inner cavity of the tank body 1 is provided with a manhole 8, and the chamber between the manhole 8 and the upper filter plate 7 and the upper and lower filter plates 9 Connected; the upper filter plate 7 and the lower filter plate 9 are evenly provided with filter holes of appropriate pore size to ensure good hydraulic conditions; the lower part of the inner cavity of the tank body 1 is provided with a swirl cone 22, and the upper part of the swirl cone 22 is provided with a The water distribution pipe 21 on the swirl cone; the water to be treated enters the inner cavity of the tank body 1 through the water inlet pipe 10 through the swirl cone 22; The backwash port 23 is fed into the backwash distribution pipe 11 for backwashing the suspended solids accumulated in the sludge area of the tank body 1; the cavity formed by the upper filter plate 7 and the top of the tank body 1 is provided with an inverted U-shaped overflow pipe 6 , the top of the inverted U-shaped overflow pipe 6 is provided with a broken siphon port 2, and the rich water at the top of the tank body 1 is sucked into the inverted U-shaped overflow pipe 6 through the broken siphon port 2, and then passes through the overflow port arranged on the upper part of the tank body 1 5 Exclusion; the upper part of the tank body 1 is provided with a slag collection tank 15 and an oil collection tank 16, and the tiny suspended matter and oil in the upper part of the tank body 1 are respectively introduced into the oil discharge port 4 through the slag collection tank 15 and the oil collection tank 16 And slag outlet 3, regularly discharged.

The filter material 19 of this embodiment is a single or multiple combinations of foam beads, quartz sand, ceramsite, walnut shells, and fiber balls.

The outlet water collection pipe 18 of this embodiment is arranged in the cavity between the top of the tank body 1 and the upper filter plate 7, or in the cavity between the lower filter plate 8 and the upper water distribution pipe 21 of the swirl cone.

In this embodiment, the water outlet pipe 17, the sewage outlet 12, the slag outlet 3, and the oil outlet 4 are all equipped with electric valves or pneumatic valves for automatic control.

The tank body 1 of this embodiment is provided with an electronic liquid level gauge for automatic monitoring.

In this embodiment, except the filter material 19, other components are all made of stainless steel, carbon steel, PP or fiberglass.

In the actual work of this embodiment, the liquid to be treated enters the swirl cone 22 tangentially through the water inlet pipe 10, and the liquid to be treated forms a hydrocyclone under the action of the swirl cone 22, which promotes the separation of mud, water, oil, etc., greatly Part of the suspended solids with higher density enters the bottom of the tank body 1 along the bottom of the swirl cone 22, and the oil, water and part of the suspended solids float up through the swirl cone upper water distribution pipe 21 of the swirl cone 22, enter the cavity of the tank body 1, and then Through the lower filter plate 9, packing 19, and upper filter plate 7, the floating suspended matter is intercepted and gathered under the action of the lower filter plate 9, packing 19, and upper filter plate 7; when the floating suspended matter gathers to a certain weight or time, it sinks , the floating and coalescing suspended matter partially sinks directly into the bottom of the tank body 1; partly settles on the swirl cone 22, and then slides into the bottom of the tank body 1 under the action of gravity; the backwash water enters the backwash distribution pipe 11 through the backwash port 23 , the top of the backflush cloth pipe 11 is evenly provided with backwash through holes of appropriate aperture, and the backwash water washes the inner wall of the tank body 1 under a certain water pressure, and the coalescing suspension attached to the inner wall of the tank body 1 and unable to settle to the bottom of the tank body 1 by itself The material slides into the bottom of the tank body 1 under the action of hydraulic force; the sludge at the bottom of the tank body 1 is discharged through the sewage outlet 12. The central pipe 20 is provided with an outlet water collection pipe 18 above the upper filter plate 7, and the outlet water collection pipe 18 is evenly distributed to ensure a stable flow rate of the water entering the central pipe. ;

Part of the tiny suspended solids and oil continue to float up through the slag collecting tank 15 and the oil collecting tank 16 to introduce the oil and suspended solids into the slag discharge port 3 and the oil discharge port 4 respectively, and discharge them regularly.

Although this manual uses a lot of tank body 1, broken siphon port 2, slag discharge port 3, oil discharge port 4, overflow port 5, inverted U-shaped overflow pipe 6, upper filter plate 7, manhole 8, lower Filter plate 9, water inlet pipe 10, backwash water distribution pipe 11, sewage outlet 12, central pipe breathing hole 13, breathing port 14, slag collecting tank 15, oil collecting tank 16, water outlet pipe 17, water outlet collecting pipe 18, filter material 19, Central pipe 20, water distribution pipe 21 on swirl cone, swirl cone 22, backwash port 23, central pipe sewage outlet 24 and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe the essence of the present invention more conveniently, and it is against the spirit of the present invention to interpret them as any additional limitation.

It should be understood that the parts not described in detail in this specification belong to the prior art.

It should be understood that the above-mentioned descriptions for the preferred embodiments are relatively detailed, and should not therefore be considered as limiting the scope of the patent protection of the present invention. Within the scope of protection, replacements or modifications can also be made, all of which fall within the protection scope of the present invention, and the scope of protection of the present invention should be based on the appended claims.

Claims (8)

1. a kind of central tube cyclonic separation settler, it is characterised in that：Including tank body (1), slag-drip opening (3), oil discharge outlet (4), Upper filter plate (7), manhole (8), lower filter plate (9), water inlet pipe (10), sewage draining exit (12), central tube spiracle (13), pneumostome (14), dreg collecting slot (15), oil trap (16), outlet pipe (17), water outlet collector pipe (18), filtrate (19), central tube (20), eddy flow Water distributor (21), rotating flow cone (22), central tube sewage draining exit (24) on cone；

Tank body (1) the outer wall middle and lower part is provided with water inlet pipe (10), and top is provided with outlet pipe (17), slag-drip opening (3), oil extraction Mouth (4), overflow port (5), pneumostome (14), lower part are provided with sewage draining exit (12), and middle and upper part is provided with manhole (8)；

Tank body (1) lumen centers are provided with central tube (20)；The central tube (20) tank body (1) and upper filter plate (7) it Between be provided with water outlet collector pipe (18), the water in the tank body (1) enters central tube (20) by collector pipe (18), when liquid level reaches It is excluded after to setting value finally by the outlet pipe (17)；The central tube (20) is provided with central tube sewage draining exit (24), position In the tank body (1) lower part；Central tube (20) top is provided with central tube spiracle (13)；

Tank body (1) the inner cavity middle and upper part is provided with filter plate (7), lower filter plate (9), the upper filter plate (7) and lower filter plate (9) it Between be filled with filtrate (19)；Tank body (1) the inner cavity middle and upper part is provided with manhole (8), the manhole (8) and upper filter plate (7) and Chamber between upper and lower filter plate (9)；It is evenly arranged with appropriate aperture respectively on the upper filter plate (7) and lower filter plate (9) Filter opening, to guarantee good hydraulics；

Tank body (1) the inner cavity middle and lower part is provided with rotating flow cone (22), and rotating flow cone (22) top is provided with cloth on rotating flow cone Water pipe (21)；Pending water enters the tank body (1) inner cavity through the rotating flow cone (22) by the water inlet pipe (10)；

Tank body (1) top is provided with dreg collecting slot (15) and oil trap (16), the small suspended matter on tank body (1) top and Oil, suspended matter are introduced between the slag-drip opening (3) and oil discharge outlet (4) by dreg collecting slot (15) and oil trap (16) by oil content, Periodically discharge.

2. central tube cyclonic separation settler according to claim 1, it is characterised in that：The filtrate (19) is foam Bead quartz sand, haydite, walnut shell, fibrous nodules single or numerous compositions.

3. central tube cyclonic separation settler according to claim 1, it is characterised in that：The water outlet collector pipe (18) It is arranged at the top of the tank body (1) in the cavity between the upper filter plate (7), or is arranged in the lower filter plate (8) and described In cavity on rotating flow cone between water distributor (21).

4. central tube cyclonic separation settler according to claim 1, it is characterised in that：Lower section in the tank body (1) Setting recoil water distributor (11), backwash mouth (23) of the backwashing water by setting in the tank body (1) lower part are sent into the recoil Water distributor (11), for the suspended matter for the tank body (1) the sludge area aggregation that recoils.

5. central tube cyclonic separation settler according to claim 1, it is characterised in that：The upper filter plate (7) and tank It is provided with inverted U overflow pipe (6) in the cavity constituted at the top of body (1), inverted U overflow pipe is provided with brokenly siphon port at the top of (6) (2), water rich at the top of tank body (1) sucks the inverted U overflow pipe (6) by the broken siphon port (2), then passes through setting Overflow port (5) on tank body (1) top excludes.

6. central tube cyclonic separation settler described in -5 any one according to claim 1, it is characterised in that：The water outlet Pipe (17), sewage draining exit (12), slag-drip opening (3), oil discharge outlet (4) are mounted on motor-driven valve or pneumatic operated valve, for realizing automation control System.

7. central tube cyclonic separation settler described in -5 any one according to claim 1, it is characterised in that：The tank body (1) it is internally provided with electronic liquid level gauge, for realizing automatically-monitored.

8. central tube cyclonic separation settler described in -5 any one according to claim 1, it is characterised in that：Except the filter Expect (19) outside, other components are made by stainless steel, carbon steel, PP or glass-reinforced plastic material.