CN102872668B

CN102872668B - Agglomerate cyclone separator

Info

Publication number: CN102872668B
Application number: CN2012103555243A
Authority: CN
Inventors: 姚宇婷; 张斐; 黄恒佐; 陈继仁
Original assignee: Morimatsu Jiangsu CNOOC Engineering Equipment Co Ltd
Current assignee: Morimatsu Jiangsu Heavy Industry Co Ltd
Priority date: 2012-09-24
Filing date: 2012-09-24
Publication date: 2013-11-27
Anticipated expiration: 2032-09-24
Also published as: CN102872668A

Abstract

The invention relates to an agglomerate cyclone separator which is characterized by comprising a vertical outer cylinder body, a louver separator, a plurality of cyclone pipes and a plurality of agglomerate filter elements, wherein the outer cylinder body is axially divided into an agglomerate filtering area, an inertial separating area and a cyclone separating area from top to bottom; the louver separator is internally arranged in the inertial separating area; a natural gas inlet which stretches out of the side wall of the outer cylinder body is arranged at the top end of the louver separator, and a louver separator exhaust port is arranged at the bottom of the louver separator; the cyclone pipes are arranged vertically and are internally arranged in the cyclone separating area; an air inlet of each of the cyclone pipes is communicated with an exhaust port of the louver separator, a bottom flow port of the cyclone pipe stretches into an ash bucket, and an overflow port of the cyclone pipe stretches into the agglomerate filtering area; the agglomerate filter elements are arranged in the agglomerate filtering area; and the agglomerate filter elements are arranged at overflow ports of the cyclone pipes. Through skillful combination of various separators, the agglomerate cyclone separator disclosed by the invention can be applied to occasions in which larger particles and liquid drops can appear suddenly, and in addition, the agglomerate cyclone separator is high in separation efficiency, compact in equipment structure, and small in occupied area.

Description

A kind of coagulation type cyclone separator

Technical field

The present invention relates to a kind of natural gas cleaner, particularly a kind of coagulation type cyclone separator.

Background technology

Along with the fast development of petrochemical industry, contained particle and drop in natural gas, can have a strong impact on the normal operation of pipeline and equipment, and the separation equipment of therefore efficiently removing in recent years solid, liquid particle in natural gas has become study hotspot.The practical separation equipment of industry generally can be classified as four large classes: mechanical force separation, electric precipitation, isolated by filtration, washing separation etc.Mechanical force is separated often gravitational settling, inertial separation, cyclonic separation.

In inertial separation, be mainly that air-flow is swerved, or impact and suddenly to turn to again on blade, wherein particle is due to the inertia effect, and its movement locus just can depart from air trajectory, thereby makes both obtain separation.Air velocity is high, and this inertia effect is just large, so the volume of this separator is not too large.

The tornadotron separation principle, after impure gas enters cyclone tube vertically, air-flow passes through the guide functions of inlet guide vane and produces strong rotation, air-flow enters Whirlwind barrel downwards twist along cylindrical shell, the drop that density is large and grit are thrown toward wall under centrifugal action, and, under Action of Gravity Field, fall to flowing out in tornadotron underflow opening ash bucket along barrel, and flow out from the sewage draining exit of device bottom, clean air flows away from the overfall conduit.Cyclonic separating apparatus is mainly to rely on centrifugal force, utilizes the density contrast of solid, liquid particle and combustion gas, separates a kind of mechanical separation process of purpose thereby reach.Yet the versatility of tornadotron is poor, more to the partition size restriction, particle is excessive also larger to the tornadotron internal friction.

Coagulation type isolated by filtration principle, will contain the combustion gas of liquid phase by establishing perforated device or passing through the filtering layer formed by certain granule medium, utilize the effects such as it is held back, screening, inertial collision that the harmful substances such as suspension in waste water and oil content are removed, the coagulation type filter efficiency is high, tries out the drop in removing gas.But, due to the perforation size restriction, easily stop up for the situation that particle is larger.

Due to the specific limited of natural gas, its impurity content is unstable, when operating mode is different, easily produces fluctuation, and above isolated by filtration efficiency is unstable, has certain defect, therefore develops a kind of New Type of Separator that is applicable to the natural gas dedusting imperative.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind ofly can carry out to the unsettled natural gas of impurity content that efficient solid, liquid impurity separates and the coagulation type cyclone separator of compact conformation.

For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of coagulation type cyclone separator, its innovative point is to comprise: a vertical outer cylinder body, upper cover is established in the upper end of this outer cylinder body, ash bucket is established in lower end, upper cover arranges gas outlet, and described outer cylinder body is divided cohesion filtering area, inertial separation district, cyclone separation vertically from top to bottom; One louver separator, this louver separator is built in the inertial separation district, and the top of described louver separator arranges the Imported gas that stretches out the outer cylinder body sidewall, and bottom arranges the louver separator exhaust outlet; Some vertically disposed tornadotrons, described tornadotron is built in cyclone separation, and the air inlet of tornadotron is communicated with the louver separator exhaust outlet, and the underflow opening of tornadotron stretches in ash bucket, and the overfall of tornadotron stretches into the cohesion filtering area; The built-in some cohesion filter cores of cohesion filtering area, described cohesion filter core is arranged on the overfall of tornadotron.

Further, the ratio of the cylindrical shell height of described outer cylinder body and diameter is between 1:1 ~ 2:1.

Further, described ash bucket bottom arranges sewage draining exit.

Further, described louver separator is the louver separator of the lower stream that loses heart of band.

Further, described cohesion filtering area also is provided with deflection plate.

The invention has the advantages that: impure combustion gas first carried out to a pre-separation by louver separator, separate larger particles, then by tornadotron separating most particle and drop, gas after finally separating again filters through the agglomeration separation district, contained fine droplet in divided gas flow.Utilize the ingenious combination of multiple separator, make this structure can be applicable to larger particles and the emergent occasion of drop meeting, in material gas, grain graininess is applicable to following scope:

Grain graininess: 100% Dp >=3 μ m; 99.5% 0.5 μ m≤Dp<8 μ m; 10% Dp<20 μ m; Liquid droplet size: 100% Dp >=8 μ m; 99.5% 0.5 μ m≤Dp<8 μ m; Separative efficiency is high, and compact equipment, floor space are little.

The accompanying drawing explanation

Fig. 1 is coagulation type cyclone separator structure schematic diagram of the present invention.

Fig. 2 is along A-A line cutaway view in Fig. 1.

Fig. 3 is tornadotron structural representation in the present invention.

The specific embodiment

As shown in Figure 1, comprise natural gas outlet 1, deflection plate 2, natural gas entrance 3, louver separator 4, tornadotron 5, sewage draining exit 6, ash bucket 7, cohesion filter core 8, outer cylinder body 9, upper cover 10.

Above-mentioned outer cylinder body 9 is vertical, the ratio of its cylindrical shell height and diameter is between 1:1 ~ 2:1, outer cylinder body 9 is divided into cohesion filtering area, inertial separation district, cyclone separation vertically from top to bottom, the upper end of outer cylinder body 9 arranges upper cover 10, upper cover 10 centers have gas outlet 1, the lower end of outer cylinder body 9 arranges ash bucket 7, and ash bucket 7 bottom center arrange sewage draining exit 6.

The inertial separation district arranges louver separator 4, the baffle length of louver separator 4 is the 20mm left and right, 5 ~ 6mm of distance between baffle plate, angle between attached plate and plumbous directrix is 30 ° of left and right, make the air-flow angle of revolution that 15 ° of left and right be arranged, the top of this louver separator 4 arranges the Imported gas 3 that stretches out outer cylinder body 9 sidewalls, and the bottom of louver separator 4 is communicated with the tornadotron of cyclone separation 5 air inlets.In the present embodiment, as shown in Figure 2, louver separator 4 is the louver separator of the lower stream that loses heart of band, and its bottom dust-exhausting port 11 is by outside the direct drain separator of square dust discharge pipeline 12.

The built-in some vertically disposed tornadotrons 5 of cyclone separation, tornadotron 5 is uniformly distributed ringwise, and tornadotron 5 is arranged on by upper and lower tube sheet in the cyclone separation of outer cylinder body 9, and its quantity can be regulated according to treating capacity.The structure of tornadotron 5 as shown in Figure 3, comprise overfall 51, spiral guide blade 52, whirlwind body 53, cone section 54 and underflow opening 55, the center, air inlet place of whirlwind body 53 arranges the overflow pipe protruded upward, the overfall 51 of this overflow pipe is positioned at the cohesion filtering area, the lower end of Whirlwind barrel 53 connects cone section 54, and the lower end of cone section 54 is underflow opening 55.

The built-in some cohesion filter cores 8 of cohesion filtering area, cohesion filter core 8 is arranged on the overfall 51 of tornadotron 5.The cohesion filtering area also is provided with deflection plate 2, and deflection plate 2 can change gas flow, thereby extends the time of staying of gas, utilizes limited space, and what make that filter process carries out is more thorough.Can by changing deflection plate 2 spacings, change the flow velocity of gas, the less flow velocity of deflection plate 2 spacings can be larger.And can according to the difference for the treatment of capacity, the deflection plate 2 of varying number be set.

Operation principle: natural gas or other dusty gases enter in louver separator 4 through gas inlet 3, louver type baffle has changed gas flow, and constantly from the gap of shutter plate washer, flowing out, the larger particle of granularity is because the inertia effect is constantly separated, and the dust exhausting hole arranged along edge by the louver separator bottom flows in ash bucket 7.When air-flow moved in louver separator, tolerance more down was less, and gas speed also gradual change is little, and the inertia effect also reduces thereupon.Under utilizing that dust exhausting hole forms, let out the formula structure and take approximately 10% gas away in the louver separator bottom, thereby help to improve separative efficiency.

After gas carries out a pre-separation by louver separator 4, air inlet by tornadotron 5 tops enters tornadotron 5, and under the effect of tornadotron 5 porch spiral guide blades 52, make air-flow change swirling eddy into, can produce the High Rotation Speed flow field, due to the Media density difference, particle and drop can under the effect of rotational flow field in whirlwind body 53 along axial downward movement, can move downward along wall in 54 o'clock moving to cone section, form outer eddy flow flow field, then by underflow opening 55, drain into ash bucket 7.Gas moves upward along central shaft, and forms the inward eddy moved upward on axis direction, finally by overfall 51, is discharged.

Final gas is discharged from the overfall 51 of tornadotron 5; arrive the cohesion filtering area; effect due to deflection plate 2; gas is contacted more fully with cohesion filter core 8; when gas passes through cohesion filter core 8; tiny oil droplet in gas will be trapped and be attached in material for core surface or hole; the oil droplet be trapped is wetting at material surface, expansion; further with on every side elaioleucite collision coalescence; oil droplet is coarse gradually; thereby from gas, separating, clean gas is from discharging the top natural gas outlet 1 of upper cover.

Claims

1. coagulation type cyclone separator is characterized in that comprising:

One vertical outer cylinder body, upper cover is established in the upper end of this outer cylinder body, and ash bucket is established in lower end, and upper cover arranges gas outlet, and described outer cylinder body is divided cohesion filtering area, inertial separation district, cyclone separation vertically from top to bottom;

One louver separator, this louver separator is built in the inertial separation district, and the top of described louver separator arranges the Imported gas that stretches out the outer cylinder body sidewall, and bottom arranges the louver separator exhaust outlet; Described louver separator is the louver separator of the lower stream that loses heart of band;

Some vertically disposed tornadotrons, described tornadotron is built in cyclone separation, and the air inlet of tornadotron is communicated with the louver separator exhaust outlet, and the underflow opening of tornadotron stretches in ash bucket, and the overfall of tornadotron stretches into the cohesion filtering area; Comprise overfall, spiral guide blade, whirlwind body, cone section and underflow opening, the center, air inlet place of whirlwind body arranges the overflow pipe protruded upward, the overfall of this overflow pipe is positioned at the cohesion filtering area, and the lower end of Whirlwind barrel connects the cone section, and the lower end of cone section is underflow opening;

The built-in some cohesion filter cores of cohesion filtering area, described cohesion filter core is arranged on the overfall of tornadotron; Described cohesion filtering area also is provided with deflection plate.

2. coagulation type cyclone separator according to claim 1, it is characterized in that: the cylindrical shell height of described outer cylinder body and the ratio of diameter are between 1:1 ~ 2:1.

3. coagulation type cyclone separator according to claim 1, is characterized in that: sewage draining exit is set bottom described ash bucket.