CN102020336A - Equipment and method for treating oil extraction wastewater with integration of coalescence and hydrocyclone separation - Google Patents
Equipment and method for treating oil extraction wastewater with integration of coalescence and hydrocyclone separation Download PDFInfo
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- CN102020336A CN102020336A CN2009100927628A CN200910092762A CN102020336A CN 102020336 A CN102020336 A CN 102020336A CN 2009100927628 A CN2009100927628 A CN 2009100927628A CN 200910092762 A CN200910092762 A CN 200910092762A CN 102020336 A CN102020336 A CN 102020336A
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Abstract
The invention relates to a piece of equipment and a method for treating oil extraction wastewater with integration of coalescence and hydrocyclone separation. The equipment mainly comprises an inlet chamber (11), an underflow chamber (12), an overflow chamber (13), and a flat seal head (14). In the inlet chamber (11) is arranged a coalescence cylinder (16) equipped with coalescence materials, and multiple assemblies of independent flow hydrocyclones (15) of each chamber are densely arranged in a hexagon manner and are transversely penetrated. The method in the invention includes the following steps: oil extraction wastewater pump is sent to an inlet of a pressure vessel, wastewater flows through the coalescence cylinder (16), small oil droplets in the dispersed phase aggregate, become larger and then enter the independent flow hydrocyclones (15) to form high-speed rotating vortex, heavy phase water is collected in the underflow chamber (12) and discharged from a water outlet (121), and light phase oil is forced to move to the axle center, flows to the top, is discharged from an overflow mouth (153D), is collected in the overflow chamber (13) and is finally discharged from an oil drain port (131). According to the method and the equipment in the invention, the size of oil droplets in the dispersed phase entering each independent flow hydrocyclone is large, so the oil-water separation efficiency is largely enhanced compared with conventional technologies and equipments. Both oil contents in the water outlet and water contents in the oil drain port are relatively low.
Description
Technical field
The present invention relates to a kind of oil, the isolating method and apparatus of water two-phase, especially with coalescent incorporate with cyclone separation process, be applicable to the purification apparatus and the method for the oil extraction waste water of small dispersed oil droplets, also can be used for the processing of other industry oily(waste)water, processing as cold rolling oily(waste)water of steel industry and degreasing fluid, the emission treatment of oil in water emulsions such as machining industry grinding, cutting, cooling, surface treatment industry degreasing wastewater treatment etc.
Background technology
In the oil development process, oil well produced liquid separates the waste water that transfers and often is called as " oil extraction waste water or recovered water (produced water) " after the degassing, dehydration, desalting treatment, in the oil extraction waste water except that principal pollutant crude oil, also contain some other impurity, as suspended substance, silt etc.Along with the increasingly stringent of environmental regulation and the shortage gradually of water resources, both at home and abroad oilfield surface engineering is to oil extraction waste water or treated qualified back standard discharge, otherwise by reinjection into reservoir, return and mix modes such as technical process, steam boiler supplementary feed and utilize again.Though difference is moved towards pairing treatment process difference, implement the primary Processing tasks that oily water separation faces often with the oil content of removing wherein.
The method of oily water separation is a lot, and treatment process commonly used has gravity oil-removing method, coagulation oil removal process, oil removal by air bubbling method, oil and water separation bygranulation method, hydrocyclone oil removal process etc., various treatment processs all have separately relative merits and the specific scope of application.
So-called coarse is to make the filling bed of oily(waste)water by being made of the coarse material, makes the big process of the coalescent change of fine oil droplet, therefore often also coarse is called coalescent.Oil and water separation bygranulation (or coalescent deoiling) usually said in the engineering reality is the general name of coarse and corresponding settling process; corresponding treatment facility can be divided into branch by structural form and build formula and Round Sump two classes; process object mainly is the dispersed oil in the water, and oil bead diameter is greater than 20 μ m.For example, Chinese patent CN2416089 has introduced a kind of efficient coalescence degreaser of Round Sump, adopts the horizontal pressure vessel structure generally, and disperse phase oil particles coalescent grown up to separate with the collection of oil-continuous phase behind gravity settling to be integrated.Dividing plate is fixed on the container body, is shaped on several threaded holes on the dividing plate, and support tube is loaded in the threaded hole; On the support tube of first step oil eliminator, be provided with the non-woven fabrics of polar material, on the support tube of second stage oil eliminator, be provided with the non-woven fabrics that is coated with silicon oxide oleophyllie hydrophobic class material; Corresponding oil eliminator is established the store oil bag on the container body top, is provided with the liquidometer that is communicated with the store oil bag in store oil bag outside.Chinese patent CN1994903A has introduced a kind of Round Sump bidirectional coalescence degreaser of thick planting template, is made up of apart from contacting the left and right sides, grease chamber two portions with two-way thick planting template oil removal chamber; Influent waste water water distributing pipe, thick planting template district are positioned at the bottom and the middle part of oil removal chamber respectively, and the top of oil removal chamber is provided with oil exit pipe and baffle plate; Waste water enters bidirectional coalescence after through baffle plate interception part sump oil and removes the grease chamber, and the bidirectional coalescence oil removing is indoor establishes two coalescent districts, zone of transition and drained zone; Remove the top of grease chamber at bidirectional coalescence and establish oil exit pipe, set up shore pipe separately except that the bottom, grease chamber in bottom, thick planting template oil removal chamber and bidirectional coalescence.But when the character of oil extraction waste water was comparatively complicated, as polymer flooding water, thick-oil waste water etc., Round Sump coarse treatment facility only utilized gravity settling mechanism to be difficult to reach the treatment effect of expection.Be more prone to this moment adopt to divide build the formula structure, with the independent prelude of coarse process as other subsequent treatment process that comprise gravity settling.For example, the researchist of Shidai Petroleum Engineering Co., Ltd., Xinjiang has introduced a kind of design of coalescence degreaser at Chinese patent CN201132783, the coalescent pack chamber is arranged in the coalescence degreaser housing, in the coalescent pack chamber, coalescent pack is housed, at housing bottom fluid inlet is arranged, liquid outlet is arranged in case top.In from bottom to top the flow process, oil droplet changes from small to big and discharges from the liquid outlet of case top oily(waste)water in coalescer, owing to improved the efficient that the oil droplet that makes oily(waste)water changes from small to big, thus help the subsequent disposal of oily(waste)water.
It is a kind of important isolation technique of being used widely at present that hydrocyclone separates, the people such as M.T.Thew of Britain Southampton university are in phase late 1960s oil-water fluid-liquid two water power swirler that is separated that takes the lead in beginning one's study, determine the sewage degrease hydrocyclone model of 35mm and two kinds of specifications of 60mm by a large amount of tests, and in the international swirler academic conference of BHRA tissue in 1980, begun to have announced successively its achievement in research.After this, the achievement in research of M.T.Thew transfers Britain BWN Vortoil company, and the said firm has made Vortoil swirler model machine in 1981 according to the hydrocyclone model of Thew, and carries out bench-scale testing at refinery with oily(waste)water.1985, the Vortoil swirler begins to obtain commerciality to be used, and therefore oily water separation also obtain the extensive concern of domestic and international industry member and scientific and technological circle with the waterpower cyclone technique.At present, many oil fields have obtained to be extensive use of the Vortoil swirler in the world.To late 1980s, the researchist of U.S. Conoco company and Amoco company has carried out big quantity research to aspects such as the processing property of swirler, Flow Field Distribution, composition optimizess again on the basis of M.T.Thew, released some new hydrocyclone monomer structures.Because the monomeric treatment capacity of hydrocyclone is limited, therefore when the processing flow in the engineering reality is big, a plurality of monomer structures can be combined according to the certain way parallel connection and carry out work, feasible array mode has pressurized vessel formula, open row posture, radiation spider net type, radial distribution formula, can type, arranged vertical formula etc.
The pressurized vessel formula is industrial practice the most common combination of monomers mode during especially oil extraction waste water is handled, the arrangement mode of hydrocyclone monomer in pressurized vessel is key wherein, mainly occurred three kinds of monomeric arrangement modes of swirler over nearly more than 20 years.Tradition two many linings of cavate Vortoil hydrocyclones that Kevin J.O ' Brien mentions in U.S. Pat 5194150 are made up of entrance cavity and drain chamber generally, lean on dividing plate of bolting between two cavitys.Because there is not independently oil-discharging cavity, be the design key of equipment so separate the oily mutually collection of back lightweight.For reaching the separation purpose, reinforced an overflow ducts in a side of dividing plate, the oil phase that hydrocyclone is separated through this passage by the oil discharge outlet drain separator.Saved space hold though adopt the structure of two cavates, the return line of overflow ducts and bolt have occupied the space of internal tank in this equipment, have limited the installation radical of cyclone pipe, thereby have influenced the separating treatment ability of hydrocyclone.In order to address the above problem, U.S. Conoco company has proposed a kind of compact type three cavity hydrocyclone structures in patent US5336410, be seen as the horizontal cylindric pressure vessel that an end is fixed, the other end is removable from profile, the end socket of removable end links to each other with shell by flange, bolt.Two wash plates have been divided into three cavitys with the internal space of container from horizontal direction, from left to right are spill cavity, entrance cavity and underflow chamber successively.The rotary fluid monomer is installed in internal tank by the perforate level on the dividing plate, and the circular gap good seal between cyclone pipe and the bulkhead through-hole makes to be isolated from each other between three cavitys, can only communicate by cyclone pipe.Every cyclone pipe all has one or two tangential inlet, a underflow opening and an overflow port, and oil extraction waste water after tangential inlet enters cyclone pipe inside, forms the eddy current of high speed rotating through certain pressure.Flowed because the difference of centrifugal force, heavy phase water get rid of to tube wall and to the underflow opening place, in the underflow chamber, collect, discharge from water port at last; Lightweight oil mutually then is forced to shift to the axle center and is flowed to the top, discharges from overflow port, collects in spill cavity, is discharged by oil discharge outlet at last, thereby realizes oily water separation.Compact type three cavity hydrocyclones are relatively simple for structure, and the oil of discharging from the cyclone pipe overflow port can directly enter spill cavity and be discharged by oil discharge outlet, easy accessibility, and the replacing of cyclone pipe also is easier to, but the sealing between three cavitys is the key of equipment.Arrangement mode except above-mentioned two kinds of cyclone pipes, Keith J.Girdler has introduced the hydrocyclone of another kind of structure in U.S. Pat 6918494B2, this equipment is the improvement of previous level being installed cyclone pipe, key is that the overflow port end at former cyclone pipe has increased by an elongated segment pipe, prolong the diameter of the diameter of pipe less than original cyclone pipe inlet part, with the installation quantity of saving space, increase cyclone pipe, and then improve efficiency of hydrocyclone; In addition, employing is added with the cyclone pipe that prolongs pipe and makes that the inlet part and the disengagement chamber of each contiguous cyclone pipe are adjacent, and inlet part staggers to each other, and this mounting means that staggers makes that the pressure of each ingress is also different, interference when having improved fluid inflow cyclone pipe.But this arrangement mode makes the structure of every cyclone pipe be not quite similar, and has increased the processing and manufacturing difficulty, and owing to there is the inlet prolongation, makes the length of underflow part also different, the corresponding shared space, underflow chamber that increased.
Can satisfy the requirement of treatment capacity although many cyclone pipes are together in parallel, in actual applications, the hydrocyclone degreasing technique still exists some limitation.For example, when it is used for oily water treatment,, will cause the oil droplet shearing-crushing, thereby increase separating difficulty if liquid in rotation speed is too high.And hydrocyclone is for the inferior separating effect of small particle size oil droplet.The particle separation diameter of oily water separation hydrocyclone is generally about 30 μ m; Separated probability is less than 50% in hydrocyclone less than the oil droplet of 30 μ m for diameter, and for the oil droplet of diameter less than 11 μ m, its separated probability is zero substantially.Therefore, hydrocyclone is lower less than the oil in water emulsion removal efficient of 30 μ m to diameter.In order to increase the disperse phase oil droplet size that enters in the hydrocyclone monomer, people's coarse equipment that generally before hydrocyclone, is installed in series again, but conventional coarse equipment volume is bigger; Companies such as Aker Kvaerner had proposed compact type tubular type waterpower coalescer (Compact Tubular Coalescer in the last few years, CTC) technical scheme, by compact type tubular type waterpower coalescer of series connection before hydrocyclone, make the little oil droplet of disperse phase particle diameter before entering hydrocyclone become big, thereby improve the deoiling effect of hydrocyclone.Though this technology is simple, do not need external impetus; and existing equipment also be need not to improve; but this external mode that is installed in series still exists some shortcomings; for example, coarse and hydrocyclone have pipeline, valve inevitably because separating between two processing units; causing still can be because of the shearing action that flows makes the disperse phase oil droplet size diminish through these valves the time through the oil-water mixture behind the coarse unit, thereby makes the coarse effect have a greatly reduced quality.
In view of the foregoing, be necessary further to develop that novel compact type is coalescent overcomes the deficiency of above-mentioned oily water separation technique with integrated isolation technique of eddy flow and equipment.
Summary of the invention
According to background technology, the objective of the invention is to overcome conventional hydrocyclone and can not effectively separate the shortcoming that contains the tiny oil droplets oil extraction waste water, providing a kind of combines coalescent and monotechnicss two kinds of oily water separations of eddy flow, can give full play to coalescent and cyclone technique advantage separately, tiny oil droplets is increased through particle diameter behind the coalescence material, the oil extraction waste water that whole size distribution has increased substantially no longer stands any dissipation and just enters the hydrocyclone monomer immediately, tiny oil droplets can be separated, compact construction can be reached again, the incorporate oil extraction waste water treatment method of coalescent and cyclonic separation and the equipment that separate purpose rapidly and efficiently.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of coalescent and incorporate oil extraction waste water treatment method of cyclonic separation, adopt following steps: at first utilize low-shear pump oil extraction waste water to be pumped into the inlet of horizontal cylindric pressurized vessel, waste water is through the inlet coalescent cylinder of flowing through, to be able to coalescent change big for the little oil droplet of disperse phase in this process, is equipped with subsequent disposal; Oil extraction waste water after coalescent processing continues to enter cyclone pipe by the monomeric tangential inlet of each hydrocyclone, form the eddy current of high speed rotating in cyclone pipe, because the difference of centrifugal force, heavy phase water is got rid of to tube wall and to the underflow opening place to flow, in the underflow chamber, collect, discharge from water port at last; Lightweight oil mutually then is forced to shift to the axle center and is upwards flowed, and discharges from overflow port, collects in spill cavity, is discharged by oil discharge outlet at last.
Realize coalescent and the equipment incorporate oil extraction waste water treatment method of cyclonic separation, mainly form by entrance cavity (11), underflow chamber (12), spill cavity (13) and flat-plate closure (14), wherein: entrance cavity (11) cylindrical shell is upper and lower respectively to be provided with a flange, be respectively oil extraction waste water inlet (111) and standby mouthful (112), entrance cavity (11) also is provided with box flange (113); Underflow chamber (12) cylindrical shell is upper and lower respectively to be provided with a flange, be respectively standby mouthful of (122) and water port (121), underflow chamber (12) is provided with box flange (123), entrance cavity (11) is connected and fixed by box flange (113), (123) and bolt (11A) with underflow chamber (12), gripped right clapboard (114) between entrance cavity (11) and underflow chamber (12), the afterbody of underflow chamber (12) adopts oval tube structure; The pipe connecting flange of spill cavity (13) circumferential direction is oil discharge outlet (131), the removable end of the corresponding container in the outside of spill cavity (13), dispose flat-plate closure (14), also be provided with lifting appliance (141) on it, be connected and fixed by bolt (11B) between flat-plate closure (14), spill cavity (13) and the entrance cavity (11); One coalescent cylinder (16) is set in entrance cavity (11), body is axially adopting lattice-shaped metallic framework structure (162) on the vertical plane, the cylindrical shell excircle is to adopting many vollyballs hook bolt (163) to position and support, its top is provided with hanger (164), also be provided with the inlet corresponding with waterwater entrance (161) at its back, device has coalescence material in the coalescent cylinder (16); The main body of equipment is arranged in the horizontal cylindric pressurized vessel (1), what laterally run through spill cavity (13), entrance cavity (11) and underflow chamber presses densely arranged a plurality of hydrocyclone monomers (15) subassembly of hexagon, wherein the number of the hydrocyclone monomer (15) of the quantity of the grid hole of through hole (132A), (114A) and coalescent cylinder (16) the lattice-shaped metallic framework structure (162) on left clapboard (132) and the right clapboard (114) and aperture and insertion and corresponding monomer diameter adapt, and put with corresponding sealing; Hydrocyclone monomer (15) is made up of body (151), tangential inlet (152) and oil spilling section (153), its middle tube body (151) is made up of cylinder eddy current section (151A), concentric indentation section (151B), the peaceful end of line pipeline section of fine cone section (151C) (151D) four parts, offer two tangential inlets (152B) that lead to cylinder eddy current section on tangential inlet section (152) top, the top is provided with overflow port (153D), and the bottom is provided with underflow opening.
Because adopt technique scheme, the present invention has the following advantages and effect:
1, the present invention can improve the separation efficiency of traditional pressurized vessel built-up type hydrocyclone;
2, the present invention promotes the turndown ratio of hydrocyclone, makes it still can keep higher separation efficiency under low flow;
3, the present invention's elimination or minimizing are to the dependence of chemical cleaner;
4, the present invention enlarges the range of application of hydrocyclone, enables to handle thick-oil waste water, polymer flooding oil-extraction waste water etc.;
5, the present invention can be used for the traditional pressurized vessel built-up type hydrocyclone that has had is carried out extending capacity reformation, need not change existing installation and pipeline, and input reduces cost.
Description of drawings
Fig. 1 is an overall structure synoptic diagram of the present invention;
Fig. 2 for the A of Fig. 1 of the present invention to synoptic diagram;
Fig. 3 is the coalescent cylindrical structure synoptic diagram of the present invention
Fig. 4 for the B of Fig. 3 of the present invention to synoptic diagram
Fig. 5 is a hydrocyclone monomer overall structure synoptic diagram of the present invention
Fig. 6 is the local enlarged diagram of Fig. 5 of the present invention
Fig. 7 is the tangent plane synoptic diagram of Fig. 6 of the present invention.
Embodiment
The present invention can implement with reference to the accompanying drawings, is described in further detail below in conjunction with accompanying drawing:
Illustrate by Fig. 1, coalescent and the integrated oil extraction waste water treatment facility of cyclonic separation mainly is made up of entrance cavity 11, underflow chamber 12, spill cavity 13 and flat-plate closure 14, wherein: respectively be provided with a flange in that entrance cavity 11 cylindrical shells are upper and lower, be respectively oil extraction waste water inlet 111 and standby mouth 112, entrance cavity 11 also is furnished with box flange 113; Underflow chamber 12 cylindrical shells are upper and lower also respectively to be equipped with a flange, is respectively water port 121 and standby mouthful 122, and underflow chamber 12 yet is furnished with box flange 123; Entrance cavity 11 is connected and fixed by box flange 113,123 and bolt 11A with underflow chamber 12, grips right clapboard 114 by bolt 11A between entrance cavity 11 and the underflow chamber 12, and the afterbody in underflow chamber 12 adopts oval tube structure.
The pipe connecting flange of spill cavity 13 circumferential directions is an oil discharge outlet 131, have some above the left clapboard 132 and right clapboard 114 corresponding through hole 132A, but because of different with the contact position of cyclone pipe, so the diameter of through hole 132A is greater than the diameter of through hole 114A, and from figure, be easy to see, the axial height of spill cavity 13 is more much smaller than the axial height in entrance cavity 11 and underflow chamber 12, and this is because this part with collection body and less oil phase, does this design in order to save the interior of the container event; The removable end of the corresponding container in the outside of spill cavity 13 is furnished with flat-plate closure 14, is furnished with lifting appliance 141 on the flat-plate closure 14, so that play the safeguard protection effect when the dismounting end socket; Be connected and fixed by bolt 11B between flat-plate closure 14, spill cavity 13 and entrance cavity 11 threes.
Some hole 114A that open are arranged on the dividing plate, be provided with the radial seal groove in each through hole, cyclone pipe 15 will insert by these holes and be installed to 12 inside, underflow chamber, and form sealing reliably by radial direction seal ring between cyclone pipe 15 excircles and left clapboard 132 through holes.
As shown in Figure 2, lifting appliance 141 on the flat-plate closure 14 is after use after a while, the coalescence material that is installed on the entrance cavity 11 interior coalescent cylinders 16 needs to change, and cyclone pipe 15 usefulness have wearing and tearing after after a while and also need repair and replacement, so safe lifting appliance 141 is housed, convenient maintain and replace on the flat-plate closure 14 to the clustered aggregates inner components; In addition, it is densely arranged that cyclone pipe 15 is pressed hexagon at internal tank, increased it to the utmost quantity is installed, and then improved the separating treatment ability of swirler.
Cyclone pipe body streamline can be bicone, single tapered, also can be other streamline structures of having succeeded already and having used, and Fig. 3, Fig. 4, Fig. 5 are that example has provided cyclone pipe monomer structure figure synoptic diagram with the bicone structure.Comprehensive these three figure as seen, cyclone pipe monomer assembly 15 is made up of body 151, tangential inlet section 152, location, top oil spilling section 153 3 parts, the top of cyclone pipe body 151 is eddy current section 151A, in order reliably to be connected with tangential inlet section 152, the internal diameter of this section is bigger compared with other positions of body 151, so that tangential inlet section 152 is inserted wherein, and form good sealing, oil extraction waste water forms eddy current in eddy current section 151A, then enter connected concentric indentation section 151B.Obtain great acceleration in the necking segment 151B with one heart, and forming vortex flow.Necking segment 151B lower end connects fine cone section 151C with one heart, and rate of flow of fluid constantly increases herein.The tail end of cyclone pipe body 151 is parallel rear 151D, and parallel rear utilizes the fluidic constant speed, can cause certain back pressure to top, is beneficial to the profit two-phase and fully separates.Oil extraction waste water is after swirler separates, because the difference of centrifugal force, heavy phase water is got rid of to tube wall and to the underflow opening place to flow, and collects in underflow chamber 12, discharges from water port 121 at last.Cyclone pipe tangential inlet section 152 is more smaller than this section rest part with the external diameter of body 151 connection portions, its size should make this section and body 151 corresponding parts form shrink-fit, and, make both fully seal by the O RunddichtringO is installed in the sealed groove thereon; Tangential inlet section 152 the other ends are processed with internal thread 152A, itself and location, top oil spilling section 153 are meshed, the crucial part of tangential inlet section 152 is being processed with the tangential inlet 152B of two square-sections thereon, oil extraction waste water through coalescent processing enters cyclone pipe body 151 by these two tangential inlets, and then carries out profit biphase cyclonic separation.Outside screw 153A on the top location oil spilling section 153 is corresponding with the internal thread 152A on the tangential inlet section 152, by screw thread oil spilling section 153 is located at the top and tangential inlet section 152 connects firmly.153B on location, the top oil spilling section 153 is a locating shoulder, when cyclone pipe monomer assembly 15 is installed to entrance cavity 11, this locating shoulder will be fixed on the perforate 132A place on the dividing plate 132 of spill cavity 13, oil extraction waste water enters cyclone pipe monomer assembly 15 inside by tangential inlet 152B, because momentum makes cyclone pipe 15 that the trend of rotation be arranged, the trend of this rotation has been quickened the circle wearing and tearing of O RunddichtringO, so will limit its rotation, the columnar structure 153B of top cover 153 just plays the fixed effect.The part of similar bolt head is spanner section 153C on the oil spilling section 153 of location, top, tightens the screw thread between top location oil spilling section 153 and the tangential inlet section 152 by this.In addition, location, top oil spilling section 153 is a hollow structure, and the circumferential direction of spanner section 153C is provided with perforate 153D, serves as the top overflow port of cyclone pipe monomer assembly 15, oil extraction waste water forms the eddy current of high speed rotating after certain pressure enters cyclone pipe by the tangential inlet 152B of tangential inlet section 152; Because the difference of centrifugal force, lightweight oil mutually are forced to shift to the axle center and are upwards flowed, and discharge from overflow port 153D, after spill cavity 13 is collected, discharge from oil discharge outlet 131.
Fig. 6 is the cyclone pipe monomer assembly drawing in coalescent and the integrated oil extraction waste water treatment facility of cyclonic separation, from scheming to go up the relative position relation that can be clear that each integral part of cyclone pipe monomer, and the entity effect after assembling.
Fig. 7 is the structural representation of coalescent cylinder in coalescent and the integrated oil extraction waste water treatment facility of cyclonic separation.Coalescent cylinder 16 is installed in entrance cavity 11 inside, whole outer circumference surface adopts the skeleton screen net structure, external diameter is slightly less than the internal diameter of horizontal pressure vessel entrance cavity, have on the excircle one with the aforementioned oil extraction waste water 111 corresponding openings 161 that enter the mouth, oil extraction waste water can enter coalescent cylinder 16 by this opening like this.Adopt metal grate structure 162 on three axial vertical planes of left end, centre, right-hand member of coalescent cylinder, several holes is arranged on the grid, its dimensions is corresponding with the cyclone pipe 15 of insertion with quantity, and plays a supporting role; Fully corresponding parallel for the ease of the hole of installing on 15, two dividing plates of each cyclone pipe monomer assembly with the hole on the coalescent cylinder grid.At the excircle direction uniform distribution of coalescent cylinder 16 four row ball studs 163, each row ball stud is about six in the number on the axis direction, therefore amount to 24, these ball studs also play the effect of the coalescent cylinder of positioning supports when playing fixedly skeleton silk screen effect.Front end at coalescent cylinder has four hangers 164 by bolting, with convenient coalescent cylinder is inserted or takes out in horizontal pressure vessel.
The present invention is coalescent as follows with the installation process integrated oil extraction waste water treatment facility of eddy flow: after fixing by bolt 11A with entrance cavity 11 and dividing plate between the two 114 when underflow chamber 12; the coalescent cylinder 16 that hydrophilic oleophobic property coarse material is housed is put into entrance cavity 11 inside; it is 111 corresponding that its upper opening 161 and the oil extraction waste water of entrance cavity 11 are entered the mouth; so that oil extraction waste water is behind entrance cavity 11 access arrangements; it is coalescent at first to enter coalescent cylinder 16, and then enters each cyclone pipe monomer assembly 15.After installing coalescent cylinder 16, spill cavity 13 is installed again.Then, one by one cyclone pipe monomer assembly 15 flatly is inserted in the oral cavity from right clapboard 114, in this process, to remain the cyclone pipe level, tangential inlet section 152 contacts with through hole 132A on the left clapboard 132 on the cyclone pipe monomer assembly 15, in the radial seal groove in the through hole 132A O RunddichtringO has been installed before this, so that cyclone pipe monomer assembly 15 outer circumference surfaces and left clapboard 132 form good sealing, guarantee only to finish fluid migration between entrance cavity 11 and the spill cavity 13 by cyclone pipe monomer assembly 15; Further insertion along with cyclone pipe monomer assembly 15, parallel tailpipe section 151D contacts with through hole 114A on the right clapboard 114, in the radial seal groove in the through hole 114A O RunddichtringO has been installed before this, so that cyclone pipe monomer assembly 15 outer circumference surfaces and right clapboard 114 form good sealing, guarantee between entrance cavity 11 and the underflow chamber 12 it also only is only to finish fluid migration by cyclone pipe monomer assembly 15; Cyclone pipe monomer assembly 15 further is inserted into internal tank, tightly fits up to the locating shoulder 153B and the left clapboard 132 of location, top oil spilling section 153.Every cyclone pipe monomer assembly all is fixed in each through hole by above-mentioned steps, at last in the inner densely arranged mode of hexagon that forms of whole cylinder horizontal container; At last, load onto flat-plate closure 14, flat-plate closure 14, spill cavity 131 and entrance cavity 11 are connected and fixed with bolt 11B.
When adopting aforesaid device that coalescent and the integrated oil extraction waste water of eddy flow are handled: at first utilize low-shear pump oil extraction waste water to be pumped into the inlet of horizontal cylindric pressurized vessel, waste water is through the 111 coalescent cylinders 16 of flowing through that enter the mouth, to be able to coalescent change big for the little oil droplet of disperse phase in this process, is equipped with subsequent disposal; Oil extraction waste water after coalescent processing continues to enter cyclone pipe 15 by the tangential inlet 152B of each hydrocyclone monomer 15, in cyclone pipe, form the eddy current of high speed rotating, because the difference of centrifugal force, heavy phase water is got rid of to tube wall and to the underflow opening place to flow, in underflow chamber 12, collect, discharge from water port 121 at last; Lightweight oil mutually then is forced to shift to the axle center and is upwards flowed, and discharges from overflow port 153D, collects in spill cavity 13, is discharged by oil discharge outlet 131 at last.
Claims (4)
1. coalescent and the incorporate oil extraction waste water treatment method of cyclonic separation, adopt following steps: at first utilize low-shear pump oil extraction waste water to be pumped into the inlet of horizontal cylindric pressurized vessel, waste water is through the inlet coalescent cylinder of flowing through, to be able to coalescent change big for the little oil droplet of disperse phase in this process, is equipped with subsequent disposal; Oil extraction waste water after coalescent processing continues to enter cyclone pipe by the monomeric tangential inlet of each hydrocyclone, form the eddy current of high speed rotating in cyclone pipe, because the difference of centrifugal force, heavy phase water is got rid of to tube wall and to the underflow opening place to flow, in the underflow chamber, collect, discharge from water port at last; Lightweight oil mutually then is forced to shift to the axle center and is upwards flowed, and discharges from overflow port, collects in spill cavity, is discharged by oil discharge outlet at last.
2. equipment of realizing the described method of claim 1, mainly form by entrance cavity (11), underflow chamber (12), spill cavity (13) and flat-plate closure (14), it is characterized in that: entrance cavity (11) cylindrical shell is upper and lower respectively to be provided with a flange, be respectively oil extraction waste water inlet (111) and standby mouthful (112), entrance cavity (11) also is provided with box flange (113); Underflow chamber (12) cylindrical shell is upper and lower respectively to be provided with a flange, be respectively standby mouthful of (122) and water port (121), underflow chamber (12) is provided with box flange (123), entrance cavity (11) is connected and fixed by box flange (113), (123) and bolt (11A) with underflow chamber (12), gripped right clapboard (114) between entrance cavity (11) and underflow chamber (12), the afterbody of underflow chamber (12) adopts oval tube structure; The pipe connecting flange of spill cavity (13) circumferential direction is oil discharge outlet (131), the removable end of the corresponding container in the outside of spill cavity (13), dispose flat-plate closure (14), also be provided with lifting appliance (141) on it, be connected and fixed by bolt (11B) between flat-plate closure (14), spill cavity (13) and the entrance cavity (11); One coalescent cylinder (16) is set in entrance cavity (11), body is axially adopting lattice-shaped metallic framework structure (162) on the vertical plane, the cylindrical shell excircle is to adopting many vollyballs hook bolt (163) to position and support, its top is provided with hanger (164), also be provided with the inlet corresponding with waterwater entrance (161) at its back, device has coalescence material in the coalescent cylinder (16); The main body of equipment is arranged in the horizontal cylindric pressurized vessel (1), what laterally run through spill cavity (13), entrance cavity (11) and underflow chamber presses densely arranged a plurality of hydrocyclone monomers (15) subassembly of hexagon, wherein the number of the hydrocyclone monomer (15) of the quantity of the grid hole of through hole (132A), (114A) and coalescent cylinder (16) the lattice-shaped metallic framework structure (162) on left clapboard (132) and the right clapboard (114) and aperture and insertion and corresponding monomer diameter adapt, and put with corresponding sealing; Hydrocyclone monomer (15) is made up of body (151), tangential inlet (152) and oil spilling section (153), its middle tube body (151) is made up of cylinder eddy current section (151A), concentric indentation section (151B), the peaceful end of line pipeline section of fine cone section (151C) (151D) four parts, offer two tangential inlets (152B) that lead to cylinder eddy current section on tangential inlet section (152) top, the top is provided with overflow port (153D), and the bottom is provided with underflow opening.
3. the coalescent and incorporate oil extraction waste water treatment facility of cyclonic separation according to claim 2 is characterized in that: described cyclone pipe body streamline can be a bicone, single tapered, or other streamline structures.
4. the coalescent and incorporate oil extraction waste water treatment facility of cyclonic separation according to claim 2 is characterized in that: the inner coalescence material of described coalescent cylinder (16) is hydrophilic oleophobic property coarse material or lipophilic-hydrophobic property coarse material.
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| CN2009100927628A CN102020336A (en) | 2009-09-23 | 2009-09-23 | Equipment and method for treating oil extraction wastewater with integration of coalescence and hydrocyclone separation |
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| CN2009100927628A CN102020336A (en) | 2009-09-23 | 2009-09-23 | Equipment and method for treating oil extraction wastewater with integration of coalescence and hydrocyclone separation |
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| CN103274498A (en) * | 2013-06-20 | 2013-09-04 | 青岛科力源环境科技有限公司 | Oil-water separator |
| CN103663657A (en) * | 2013-12-24 | 2014-03-26 | 金华增 | Gridding vortex street reactor |
| CN104418452A (en) * | 2013-08-22 | 2015-03-18 | 陕西宇清油田水处理技术有限公司 | Oil field fracturing flowback fluid sewage treatment equipment |
| CN104785384A (en) * | 2015-04-15 | 2015-07-22 | 北京石油化工学院 | Axial entrance static hydrocyclone for pre-dehydration of oil-well produced water |
| CN105435489A (en) * | 2015-11-10 | 2016-03-30 | 中国石油大学(华东) | Whirl enhanced vertical oil water separating device with micro-channels and method |
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| CN103274498A (en) * | 2013-06-20 | 2013-09-04 | 青岛科力源环境科技有限公司 | Oil-water separator |
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| CN104785384B (en) * | 2015-04-15 | 2017-07-04 | 北京石油化工学院 | A kind of oil well produced liquid predrainage axial entrance static hydrocyclone |
| CN105435489A (en) * | 2015-11-10 | 2016-03-30 | 中国石油大学(华东) | Whirl enhanced vertical oil water separating device with micro-channels and method |
| CN105435489B (en) * | 2015-11-10 | 2019-05-14 | 中国石油大学(华东) | The vertical oily-water seperating equipment of swirl reinforced with microchannel and method |
| CN105923703A (en) * | 2016-06-16 | 2016-09-07 | 重庆坤泉环境工程有限公司 | Cyclone slag removing and collecting device |
| CN105923703B (en) * | 2016-06-16 | 2018-11-20 | 重庆坤泉环境工程有限公司 | Eddy flow slagging-off collection device |
| CN109107789A (en) * | 2018-10-19 | 2019-01-01 | 东北石油大学 | A kind of corrugated plate dst coalescence cyclone separation device |
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