CN200948413Y - Cyclone film separator - Google Patents

Abstract

The utility model discloses a cyclone type membrane separator, comprising an outer cylinder and an inner cylinder which forms a membrane assembly. The outer cylinder and the inner cylinder have the same shaft and are arranged on the base; an upper cover is sealed at the top of the outer cylinder and the inner cylinder; the inner cylinder is positioned in the outer cylinder; a concentrated liquid outlet is arranged on the top of the outer cylinder and is communicated with the inner cylinder; a penetration liquid outlet is arranged on the bottom of the outer cylinder; the inner cylinder is positioned at the axial zero-speed envelope face of the separator; a tangential feed opening is arranged on the bottom of the outer cylinder and is communicated with the inner cylinder. The utility model has the advantages of simple structure without the need for the central shaft and the extra energy for driving the rotation of the center shaft and the inner cylinder, greatly improved separation efficiency and the water quality of the separator, and elimination or reduction of the concentration polarization and membrane pollution.

Description

The eddy flow membrane separator

One technical field

The utility model belongs to oily-water seperating equipment efficiently, particularly a kind of eddy flow membrane separator.

Two background technologies

1967, the generation of oil field, Britain North Sea Torrey Canyon oil spill disaster impelled the people such as Martin professor Thew of Southampton university to begin to be devoted to research and carries out water-oil separating with static hydrocyclone.Nineteen eighty-three, first Tianwan businessman of its design carries out oil-water separation test with high pressure Vortoil type static hydrocyclone on the production platform in Australian Bass Strait oil field, obtained promising result.For many years, the cyclone separation process application is in continuous expansion, also is to fall over each other the heat subject studied both at home and abroad always.Along with industrial development, hydrocyclone has the irreplaceable effect of other separation equipments aspect oily waste water treatment.Its major advantage is that technology is ripe, volume and floor space is little, processing speed fast, be difficult for stopping up, stable continuously, cost is low etc., add that static cyclone separation process have comparatively mature theory support, so good application prospects arranged.These are studied by the structure of updating cyclone separator and the design of parts thereof, make the performance of cyclone separator be able to continuous improvement.But still there are some problems: the first, because the density contrast between profit two liquid phases is less,, could guarantee that weight two is separated so need to produce very strong rotary centrifugal force; The second, in order to obtain strong centrifugal force and to avoid excessive pressure to fall, then need very big major diameter to guarantee that recently two are separated; The 3rd, it is heavily mixed to guarantee that the interior liquid of separator does not produce, and guarantees separating property.Simultaneously, simple rotational flow separation can not satisfy environmental requirement.Therefore, need to improve cyclone separator arrangement, to improve cyclone performance.Although membrane separation technique has also demonstrated powerful development potentiality in the water-oil separating field, adaptability to dispersed oil and oil emulsion and even dissolved oil is all very strong, and non-secondary pollution, process does not have phase transformation, membrane module structure is simple, flow process shortens, and equipment energy consumption reduces, but the concentration polarization in film pollution and the separation process has had a strong impact on its application.

Three utility model contents

The purpose of this utility model is to provide a kind of can make profit two-phase and immiscible two-phase fluid eddy flow membrane separator efficient, that separate fast.

Realize the technical solution of the utility model purpose: a kind of eddy flow membrane separator, the inner core that comprises urceolus and formation membrane module, this urceolus and inner core are coaxial and be positioned on the base, loam cake sealed outer cylinder and inner core top are set, this inner core is positioned at urceolus, and the concentrated solution outlet that feeds inner core is set at this urceolus top, and the tube bottom setting sees through the liquid outlet outside this, described inner core is positioned at the axial zero-speed enveloping surface place of separator, and tube bottom is provided with the tangential admission mouth that feeds inner core outside.

The urceolus of the utility model eddy flow membrane separator is arranged to two parts up and down, and top links to each other with loam cake, and the lower part links to each other with base, and the middle flange that adopts connects.

The loam cake of the utility model eddy flow membrane separation device and base are provided with the groove that inner core is installed respectively, and make the junction sealing with sealing ring.

The inner core of the utility model eddy flow membrane separator is 0.54 with urceolus diameter ratio.

Operation principle of the present utility model is: in the rotational flow separation process, because action of centrifugal force, to center position, distance is nearer and speed is higher by the cyclone separator wall for axial velocity, and velocity amplitude is by negative and just become, as shown in the formula

$u_Z=\ln \frac{r}{a+\mathrm{br}}$

In the formula, u _Z---axial velocity;

R---the radius of gyration;

A, b---constant.

Wherein, constant a is relevant with the operating mode and the inner axial location of cyclone separator with b.

Therefore having axial velocity is zero point, by the liquid axial velocity is that zero each point forms one around central shaft, and with the zero axial velocity face of central shaft at a distance of certain distance, be called the fast enveloping surface of zero axle, in the liquid axial velocity of this enveloping surface inside greater than zero, liquid moves upward, eddy flow in forming, liquid in this enveloping surface outside then moves downward, axial velocity is less than zero, form outer eddy flow, the different phase-splittings that acquire a certain degree of each centrifugal force that in cyclone, is subjected to owing to mixed liquor.The mechanism of this rotational flow separation separated with film combine, make film just in time be positioned at the position of the fast enveloping surface of zero axle, or be positioned at outside the fast enveloping surface of zero axle, make oil-water mixture under cyclonic action, produce two being separated to a certain degree, it is littler to arrive concentration oily in the two-phase mixture of face, and the crown_interception that utilizes film then is to its further separation.On the one hand, can significantly improve membrane separation efficiency, improve the separative efficiency of entire separation system simultaneously; On the other hand, can effectively eliminate or alleviate concentration polarization and film pollutes.The fluid motion of rotation can be eliminated the concentration polarization that very easily produces in the simple film separation process, the deposition that reduces to reduce face of oil concentration in the face fluid, and rotatablely moving of fluid can constantly be removed deposit the shearing force of face generation simultaneously.Like this, make the resistance that produces owing to the face deposition maintain lower level in a long time, thereby keep higher filtering rate in a long time.

The utility model compared with prior art, its remarkable advantage is: (1) is simple in structure, and does not need central shaft and drive central shaft and the external energy of inner core rotation; (2) separation theorem and membrane separator reason are organically combined, significantly improve the separative efficiency and the effluent quality of separator, improve effluent quality, provide novel, efficient treatment process for handling industrial oily waste water; (3) effectively eliminate or alleviate concentration polarization and film and pollute, i.e. Xuan Zhuan fluid motion can be eliminated the concentration polarization that very easily produces in the simple film separation process, the deposition that reduces to reduce face of oil concentration in the face fluid, rotatablely moving of fluid can constantly be removed deposit the shearing force of face generation simultaneously; (4) use this device handle the low concentration oily waste water (concentration range: 50～250mg/L), the clearance of oil reaches more than 95%, sees through in the liquid oil concentration less than 10mg/L.

Four description of drawings

Fig. 1 is the profile of the utility model eddy flow membrane separator.

Fig. 2 is that the A-A of Fig. 1 is to cutaway view.

Five specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

In conjunction with Fig. 1 and Fig. 2, eddy flow membrane separator of the present utility model, the inner core 2 that comprises urceolus 1 and formation membrane module, this urceolus 1 and inner core 2 are coaxial and be positioned on the base 7, loam cake 8 sealed outer cylinders 1 and inner core 2 tops are set, this inner core 2 is positioned at urceolus 1, the concentrated solution outlet 4 that feeds inner core 2 is set at this urceolus 1 top, be provided with through liquid outlet 5 in this urceolus 1 bottom, described inner core 2 is positioned at the axial zero-speed enveloping surface place of separator, this inner core 2 is 0.54 with urceolus 1 diameter ratio, and in urceolus 1 bottom the tangential admission mouth 3 that feeds inner core 2 is set.Inner core 2 is as single tubular membrane component, make membrane module be positioned at the axial zero-speed enveloping surface place of cyclone separator, oil-water mixture produces two being separated to a certain degree under cyclonic action, it is littler to arrive concentration oily in the two-phase mixture of face, and the effect of damming that utilizes film then is to its further separation.Feed liquid forms rotating flow through the mixed liquor that this tangential admission mouth 3 enters separator in inner core 2, feed liquid under certain pressure, enters inner core 2 with certain speed thus, through cyclonic action with after film separates, concentrate is flowed out by the outlet 4 at separator top, and penetrating fluid is discharged by seeing through liquid outlet 5.Described loam cake 8 and base 7 are provided with the groove that inner core 2 is installed respectively, and make the junction sealing with sealing ring.For easy to loading and unloading, urceolus 1 can be arranged to two parts up and down, and top links to each other with loam cake 8, and the lower part links to each other with base 7, and the middle flange that adopts connects.This flange adopts bolt and nut 6 to connect.

Claims (4)

1, a kind of eddy flow membrane separator, the inner core [2] that comprises urceolus [1] and formation membrane module, this urceolus [1] and inner core [2] are coaxial and be positioned on the base [7], loam cake [8] sealed outer cylinder [1] and inner core [2] top are set, this inner core [2] is positioned at urceolus [1], the concentrated solution outlet [4] that feeds inner core [2] is set at this urceolus [1] top, be provided with through liquid outlet [5] in this urceolus [1] bottom, it is characterized in that: inner core [2] is positioned at the axial zero-speed enveloping surface place of separator, and in urceolus [1] bottom the tangential admission mouth [3] that feeds inner core [2] is set.

2, eddy flow membrane separator according to claim 1 is characterized in that: urceolus [1] is arranged to two parts up and down, and top links to each other with loam cake [8], and the lower part links to each other with base [7], and the middle flange that adopts connects.

3, eddy flow membrane separation device according to claim 1 is characterized in that: loam cake [8] and base [7] are provided with the groove that inner core [2] is installed respectively, and make the junction sealing with sealing ring.

4, eddy flow membrane separator according to claim 1 is characterized in that inner core [2] and urceolus [1] diameter ratio are 0.54.

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