CN103585845B - A kind of multiphase flow filter separator - Google Patents

Abstract

The present invention discloses a kind of multiphase flow filter separator, and the separator is made up of cylinder, air inlet pipe, conduit, filter core, escape pipe, upper blow-off pipe and down blow pipe, and guiding device is provided with by flange on conduit.Guiding device is made up of bottom, guide vane and top cover.Top cover is concave shape, and bottom is in bell mouth shape.The guide vane of several arcuations is installed between top cover and bottom, circumferentially array, formed and rotate upward gas passage, the cross-sectional area of gas passage gradually expands with airflow direction, gas flow rate gradually reduces, on the one hand gas can realize the pre-separation of impurity in eddy flow state, reduce the live load of other separating components in filtering separation device, prolonging service life of filter elements, reduce operating cost, on the other hand Flow Field Distribution of the gas inside filtering separation device can be improved, mitigation of gases flow velocity, effective impact of the buffer gas to filtering separation device cylinder inboard wall, the live load of mean allocation filter core.

Description

A kind of multiphase flow filter separator

Technical field

The present invention relates to a kind of multiphase flow filter separator, belong to gas and oil separating plant technical field.

Background technology

, it is necessary to be removed using a variety of filtering separation devices in natural gas in natural gas surface gathering and transferring and decontamination process Solid and liquid impurity, to ensure makings and collect defeated safety.Conventional filtering separation device has gravity separator, centrifugation or rotation Wind separator, coalescing filter etc..Because gas on-site operating mode is unstable, to ensure separating property, a kind of filtering can not be leaned on Separation equipment removes the solid phase and liquid phase impurity of gas, but uses two or more filtering separation device combination to make With for example with the combination of cyclone separator and coalescing filter.

Three kinds of principles that solid phase and liquid phase impurity are isolated from gas are momentum mechanics, gravitational settling and coalescence respectively, Any kind filtering separation device can all use one or more of above-mentioned three kinds of principles.By the fortune for changing gas and impurity Dynamic direction, such as centrifugation or cyclonic separation, can be achieved the separation of large granular impurity；Gravity is to complete to separate most important power, is passed through Impurity sedimentation completes separation；Fine drop（Such as spray）It is difficult to lean on Gravity Separation, coalesce droplet using coalescence principle Into big drop, and then realize gas-liquid separation.

At present, filtering separation device is directly entered filtering separation device inner chamber from inlet ductwork using natural gas more and implements to divide From mode of operation.Patent No. ZL200920222609.8（Publication No. CN201055811Y）Chinese utility model patent 《A kind of integrated gravity separator》, disclose a kind of including cylinder, the L-type air inlet pipe being arranged on cylinder and gas outlet Integrated gravity separator.Cylinder is divided into the first chamber being connected with gas outlet and the second chamber being connected with air inlet pipe, It is provided with two chambers and is separated by filtration filter core.The mouth of pipe of described L-type air inlet pipe is separated by filtration filter core backwards, towards in cylinder Wall, impingement baffle is provided with the cylinder inboard wall of mouth of pipe face so that pass through containing miscellaneous gas and slow down suddenly after L-type air inlet pipe and air-flow Direction changes, and under inertia, centrifugal force and gravity comprehensive function, realizes that gas and impurity just separate.The shortcomings that technology is：It is real In the operation of border, containing miscellaneous gas in L-type air inlet pipe flow at high speed, to slow down suddenly when impacting impingement baffle, energy loss is larger, and the One chamber forms the turbulent area of complexity, is unfavorable for the separation of impurity.The design of impingement baffle is actual equivalent to traditional separator Inlet baffle formula current divider, pre-separation effect are poor.

The content of the invention

The present invention overcomes the problems such as uneven Flow Field Distribution existing for existing separation equipment, pre-separation effect difference, there is provided a kind of Add the multiphase flow filter separator of guiding device.

The present invention is made up of cylinder, air inlet pipe, conduit, filter core, escape pipe, upper blow-off pipe and down blow pipe, on conduit Guiding device is provided with by flange.

The present invention can improve Flow Field Distribution of the gas inside filtering separation device, make gas even into being separated by filtration With filter core, mitigation of gases flow velocity, impact of effective buffer gas to filtering separation device cylinder inboard wall, momentum and gravity are utilized Principle is settled, realizes impurity（Especially liquid phase thing）Pre-separation, effectively improve the separative efficiency of solid, liquid phase impurity.

Brief description of the drawings

Fig. 1 is filter separator schematic diagram；

Fig. 2 is the installation diagram of guiding device and entry conductor；

Fig. 3 is guiding device；

Fig. 4 is guide vane schematic shapes；

Fig. 5 schemes for separation efficiency comparative.

Embodiment

The present invention is described in detail below in conjunction with the accompanying drawings：

Referring to Fig. 1, the present invention is by cylinder 6, air inlet pipe 1, conduit 2, filter core 4, escape pipe 5, upper blow-off pipe 7 and down blow pipe 8 compositions, guiding device 3 is provided with conduit 2 by flange.

Referring to Fig. 2, Fig. 3, described guiding device 3 is made up of bottom 3a, guide vane 3b and top cover 3c, and bottom 3a is loudspeaker Mouth shape, it is connected by flange with conduit 2；Bottom 3a imports internal diameter is identical with the internal diameter of conduit 2, and exit inside diameter is the internal diameter of cylinder 6 1/3 to 1/2.

Top cover 3c is concave shape, and the gas for rotating upward cross-sectional area and gradually increasing is formed with bottom 3a and guide vane 3b Body passage, to ensure that gas flowing is smooth, and formed and rotate up air-flow with certain inclination angle.

Referring to Fig. 3, Fig. 4, described guide vane 3b is arcuation, between bottom 3a and top cover 3c, circumferentially array. Its flexibility is：Intersection point in guide vane 3b outer rims projection line Yu bottom 3a lower surfaces is P, guide vane 3b outer rim projection lines Tangent line, the straight line angulation α with crossing intersection point P and bottom 3a and top cover the 3c center of circle is 20 ° to 60 °；In guide vane 3b outer rims projection line and top cover 3c intersection point be Q, the tangent line of guide vane 3b outer rim projection lines, with mistake intersection point Q and bottom 3a Straight line angulation β with the top cover 3c center of circle is 60 ° to 90 °.

The operation principle of the present invention is as follows：Gas enters guiding device 3 by air inlet pipe 1, conduit 2, by guiding device 3 by gas Body enters in filter separator cylinder 6 after forming eddy flow.It is transversal due to gas passage when gas flows through 3 inside of guiding device Area gradually increases with airflow direction, and gas flow rate reduces, flow direction changes, and a part is entrained in the impurity in gas By retardation, there is the loss of momentum.In the exit of guiding device 3, the larger impurity of the loss of momentum is under gravity, first First it is settled down to filtering separation device bottom；The less impurity of the loss of momentum is then thrown on the inwall of filter separator cylinder 6, The inwall of cylinder 6 is assembled, and flow to filter separator bottom under gravity, bottom liquid phases are discharged via down blow pipe 8.More granule The impurity of degree then enters 4 further coarse separation of filter separator filter core with gas.Most of impurity is in the bottom rich stream of filter core 4 Discharged to filter separator bottom；On a small quantity impurity is penetrated to discharge in upper blow-off pipe 7.Clean gas after separation is then by escape pipe 5 Discharge.

Three kinds of the filter separator comprehensive momentum mechanics, gravitational settling and coalescence separate modes, there is preferably separation to imitate Fruit, applicable condition range is wider, the big operating mode of the liquid content that is particularly suitable for use in.

Application examples：Referring to Fig. 5, the particle that certain density median is 18 μm is added in inlet gas, test is not With point under gas velocity, not installing any gravity separator for being separated by filtration element and the gravity separator for being only provided with diversion component additional From efficiency.As a result show, after installing the device additional, separative efficiency of the filtering separation device to the impurity of more than 15 to 20 microns of particle diameter More than 70%, reduce the live load of other separating components filtering separation device Nei, extend filter core service life, reduce Operating cost.

Claims (3)

1. A kind of 1. multiphase flow filter separator, by cylinder（6）, air inlet pipe（1）, conduit（2）, filter core（4）, escape pipe（5）, upper row Dirt pipe（7）With down blow pipe（8）Composition, it is characterized in that：In conduit（2）It is upper that guiding device is provided with by flange（3）, water conservancy diversion dress Put（3）By bottom（3a）, guide vane（3b）And top cover（3c）Composition, bottom（3a）For bell mouth shape, pass through flange and conduit （2）Connection, top cover（3c）For concave shape, with bottom（3a）And guide vane（3b）Form rotation it is upward, cross-sectional area it is gradual The gas passage of increase, guide vane（3b）For arcuation, positioned at bottom（3a）And top cover（3c）Between, circumferentially array, gas The outlet of passage is opened in by top cover（3c）And bottom（3a）On the side of composition and along guiding device（3）Circumferentially array, gas The opening of passage is towards cylinder（6）Circumferential side wall.
2. 2. a kind of multiphase flow filter separator according to claim 1, it is characterized in that：Bottom（3a）Import internal diameter and conduit （2）Internal diameter is identical, and its exit inside diameter is cylinder（6）The 1/3 to 1/2 of internal diameter.
3. 3. a kind of multiphase flow filter separator according to claim 1, it is characterized in that：Guide vane（3b）Flexibility by two Individual angle restriction, first, in guide vane（ 3b ）Outer rim projection line and bottom（ 3a ）The intersection point of lower surface is P, water conservancy diversion leaf Piece（ 3b ）The tangent line of outer rim projection line, with crossing intersection point P and bottom（ 3a ）And top cover（ 3c ）The center of circle straight line institute Angled α is 20 ° to 60 °；Second, in guide vane（ 3b ）Outer rim projection line and top cover（ 3c ）Intersection point be Q, water conservancy diversion Blade（ 3b ）The tangent line of outer rim projection line, with crossing intersection point Q and bottom（ 3a ）And top cover（ 3c ）The center of circle straight line Angulation β is 60 ° to 90 °.