CN207016732U - Slurry oil equipment for separating liquid from solid and catalytic cracking system - Google Patents

Slurry oil equipment for separating liquid from solid and catalytic cracking system Download PDF

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Publication number
CN207016732U
CN207016732U CN201720622616.1U CN201720622616U CN207016732U CN 207016732 U CN207016732 U CN 207016732U CN 201720622616 U CN201720622616 U CN 201720622616U CN 207016732 U CN207016732 U CN 207016732U
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filter
slurry oil
leaf
blender
separating liquid
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陈强
蔡连波
盛维武
李小婷
赵晓青
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Sinopec Engineering Group Co Ltd
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Sinopec Engineering Group Co Ltd
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Abstract

Catalytic cracked oil pulp solid-liquid separation technique field is the utility model is related to, more particularly, to a kind of slurry oil equipment for separating liquid from solid and catalytic cracking system.The slurry oil equipment for separating liquid from solid includes:Blender and leaf filter;Blender connects with leaf filter;Blender is used to filter aid is mixed and inputted to leaf filter;Leaf filter is used to filter slurry oil.Slurry oil equipment for separating liquid from solid provided by the utility model, is filtered by the way of blender and leaf filter to slurry oil, is avoided the operation backwashed using screen pipe filtering needs, is simplified filter, improve filter efficiency.

Description

Slurry oil equipment for separating liquid from solid and catalytic cracking system
Technical field
Catalytic cracked oil pulp solid-liquid separation technique field is the utility model is related to, more particularly, to a kind of slurry oil separation of solid and liquid Device and catalytic cracking system.
Background technology
China's major part catalytic cracking unit belongs to RFCC.In recent years although catalytic cracking process faces hydrogenation The competition of cracking, but still be the Main Means of current heavy oil lighting, it is the important channel that refinery obtains economic benefit.Due to original The increase of the heaviness and refinery's intermingled dregs ratio example of material, the difficulty of processing of catalytic cracking unit constantly increase, while produce substantial amounts of Catalytic slurry.The usual processing method of slurry oil is to add riser reactor to carry out freshening.Contain a large amount of condensed-nuclei aromatics in slurry oil, Cracking stability is more much lower than fresh feed, causes device green coke amount big, and therefore, refinery, which typically takes, reduces slurry oil freshening, outside Get rid of the measure of part slurry oil.
According to statistics, catalytic slurry yield in China's typically constitutes from the 5%-10% of catalytic cracking treating capacity, and externally extracting oil is total at present Amount is not less than 10,000,000 t/a.At present, catalytic slurry dispatches from the factory mainly as fuel oil, although this scheme can effectively solve oil The problem of outlet of slurry, but its utilization rate to slurry oil this precious resources is low, is not the preferred plan of FCC slurry usage.Refined currently In the case of the profit more and more thinner of oil, its high value added utilization is explored, there is important meaning to the economy for improving catalytic unit Justice.
Contain a large amount of catalyst fineses in catalytic slurry, these solid particulate matters can be set to slurry oil deep processed product and downstream It is standby to cause serious influence, it is unfavorable for the comprehensive utilization of slurry oil.Therefore, the use of preceding removing solid catalyst powder is catalytic slurry The necessary sex work utilized.
According to the difference of catalytic cracking unit technique, the content of FCC catalyst powder is also different in slurry oil, from 1000ppm All had been reported that to 18000ppm.Solid catalyst powder average particle size in catalytic cracking externally extracting oil typically in 10-20 microns, Simultaneously because slurry oil has high density and high viscosity, this all causes very big difficulty to separation.
The method of catalyst fines mainly has five kinds in removing catalytic slurry at present:It is natural sedimentation, centrifugal separation, quiet Electrically separated method, it is separated by filtration method and settling aids method.
The method of being separated by filtration is to intercept the solid catalyst particle in slurry oil by using a kind of poromerics and realize net Change the effective ways of separation, the filter core of slurry oil filter is mainly micro- using stainless steel cloth micropore filter element, stainless steel sintering silk screen Hole filter core or the sintered microporous filter core of powder of stainless steel.Practice have shown that it is that a kind of technology is relatively stable, disposal ability to be separated by filtration method Greatly, the high catalytic cracked oil pulp processing method of separative efficiency, and a kind of technology being most widely used at present on commercial plant.
Slurry oil is filtered using screen pipe in correlation technique, when solids in suspension particle is very thin, particularly glue During particle, the hole on screen pipe is easy to block, it is necessary to backwash it, and backwash operation is cumbersome, filtering effect Rate is relatively low.
Utility model content
The purpose of this utility model is to provide a kind of slurry oil equipment for separating liquid from solid and catalytic cracking system, existing to solve Backwash operation present in technology is cumbersome, the relatively low technical problem of filter efficiency.
A kind of slurry oil equipment for separating liquid from solid provided by the utility model, the slurry oil equipment for separating liquid from solid include:Blender And leaf filter;The blender connects with the leaf filter;The blender is used to filter aid is mixed and inputted In to the leaf filter;The leaf filter is used to filter slurry oil.
Further, the slurry oil equipment for separating liquid from solid also includes aflter-fillter;The aflter-fillter and the leaf Piece filter connects, and is filtered again for the slurry oil after the leaf filter is filtered.
Further, the aflter-fillter is cross-flow filter;Slurry oil import, oil are provided with the cross-flow filter Slurry outlet and purified liquor outlet;The outlet for having slurry oil import and the leaf filter;Slurry oil outlet with it is described The inlet communication of leaf filter.
Further, the leaf filter is multiple;The import of each leaf filter with the blender Connection, the slurry oil inlet communication exported with the cross-flow filter of each leaf filter.
Further, the blender is connected by valve with multiple leaf filters.
Further, the cross-flow filter is multiple;Multiple leaf filters and multiple cross-flow filters Connect one to one.
Further, the leaf filter and the cross-flow filter are two.
Further, it is provided with the pump housing between the blender and the leaf filter;The pump housing is used for by described in Filter aid in blender is pumped to the leaf filter.
Further, the cross-flow filter includes filter housing and the screen pipe being arranged in the filter housing;It is described Screen pipe is step screen pipe.
Further, the utility model also provides a kind of catalytic cracking system, and the catalytic cracking system splits including catalysis Makeup is put and such as slurry oil equipment for separating liquid from solid described in the utility model;The catalytic cracking unit connects with the blender It is logical.
Slurry oil equipment for separating liquid from solid provided by the utility model, including blender and leaf filter, user is by drainage Agent is added to being mixed in blender, and blender inputs mixed filter aid to leaf filter.Filter aid is in leaf One layer of drainage oxidant layer is formed on blade in piece filter.Slurry oil is added to leaf filter, under the effect of the pressure, oil Catalyst granules, resin and asphalt in slurry etc. deposit in the drainage oxidant layer on blade, and the slurry oil after filtering is from blade mistake Flowed out in filter.When the filtering pressure drop of vertical blade filter increases to certain degree, slurry oil inside leaf filter is taken out Tank is starched in oil return, and internal solids residue steam drying, by dither, by residue, discharge blade filters in solid form Device.
Slurry oil equipment for separating liquid from solid provided by the utility model, is entered by the way of blender and leaf filter to slurry oil Row filtering, the operation backwashed using screen pipe filtering needs is avoided, simplifies filter, improves filtering effect Rate.Slurry oil equipment for separating liquid from solid provided by the utility model can be used for the catalytic cracked oil pulp separation of solid and liquid of petrochemical industry, It can also be applied in the processing of coal chemical industry MTO washing waters simultaneously.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the slurry oil equipment for separating liquid from solid that the utility model embodiment provides;
Fig. 2 is the structural representation for the slurry oil equipment for separating liquid from solid that another embodiment of the utility model provides;
Fig. 3 be Fig. 1 shown in slurry oil equipment for separating liquid from solid in leaf filter structural representation;
Fig. 4 be Fig. 1 shown in slurry oil equipment for separating liquid from solid in cross-flow filter structural representation.
Reference:
1- blenders;2- leaf filters;3- aflter-fillters;
31- cross-flow filters;311- filter housings;312- screen pipes.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection;Can be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.
Fig. 1 is the structural representation for the slurry oil equipment for separating liquid from solid that the utility model embodiment provides;Fig. 3 is shown in Fig. 1 Slurry oil equipment for separating liquid from solid in leaf filter structural representation;As shown in figures 1 and 3, provided by the utility model one Kind slurry oil equipment for separating liquid from solid, the slurry oil equipment for separating liquid from solid include:Blender 1 and leaf filter 2;Blender 1 and blade Filter 2 connects;Blender 1 is used to filter aid is mixed and inputted to leaf filter 2;Leaf filter 2 is used to filter Slurry oil.
Slurry oil equipment for separating liquid from solid provided by the utility model, including blender 1 and leaf filter 2, user will help Filtering agent is added to being mixed in blender 1, and blender 1 inputs mixed filter aid to leaf filter 2.Filter aid One layer of drainage oxidant layer is formed on blade in leaf filter 2.Slurry oil is added to leaf filter 2, in the work of pressure Under, catalyst granules, resin and asphalt in slurry oil etc. deposit in the drainage oxidant layer on blade, the slurry oil after filtering from Flowed out in leaf filter 2.When the filtering pressure drop of vertical blade filter 2 increases to certain degree, by leaf filter 2 Portion's slurry oil draws back slurry oil tank, internal solids residue steam drying, by dither, residue is discharged into leaf in solid form Piece filter 2.
Slurry oil equipment for separating liquid from solid provided by the utility model, to slurry oil by the way of blender 1 and leaf filter 2 Filtered, using blender 1 by filter aid mix and leaf filter 2 is carried out filter aid precoating purpose be in order to ensure The filter blade net of leaf filter 2 will not stick colloid or asphalitine in slurry oil, ensure that filter blade net does not block.This reality The operation backwashed using the filtering needs of screen pipe 312 is avoided with the slurry oil equipment for separating liquid from solid of new offer, is simplified Filter, improves filter efficiency.Slurry oil equipment for separating liquid from solid provided by the utility model can be used for petrochemical industry Catalytic cracked oil pulp separation of solid and liquid, while can also be applied in the processing of coal chemical industry MTO washing waters.
Wherein, blender 1 is used to configure drainage slurries, and blender 1 can be conventional blending tank, with agitator.Help Filtering agent is added in the blending tank full of cleaning liquid or filtering technique medium, slurries is stirred, until being sufficiently mixed (5~10 points Clock).Filter aid is generally diatomite, cellulose etc..Air drains in leaf filter 2, and drainage slurries pass through filter vane Form circulation.Will uniform precoating (filter aid) layer of one layer of deposition on each blade.
Filter aid provides auxiliary for the blade precoating of leaf filter 2.Leaf filter 2 is mainly by housing, blade, vibration Device, spray thrower, collector tube etc. are formed, and blade is made up of multilayer stainless steel cloth, on the collector tube of center, dismounting and cleaning It is very convenient.Solid particle forms filter layer on the net in the outer layer fine wire of blade.This process is referred to as building bridge, and makes all solid Body can filter out removing from slurries.Two-sided filter leaf is vertically placed on the collector tube being horizontally mounted in filter, filtrate Then penetrate blade and enter collector tube.
Further, leaf filter 2 can be one, or multiple.It is more when leaf filter 2 is multiple Individual leaf filter 2 is connected with blender 1, and blender 1 is passed through after filter aid is mixed to multiple leaf filters 2.It is more Individual leaf filter 2 filters to slurry oil simultaneously, improves filter efficiency.
Preferably, leaf filter 2 is vertical blade filter 2.Vertical blade filter 2 is also known as board-like closed filtering Machine, Ah agate's filter, diatomite filter, vertical vane filter, are a kind of energy-efficient filter plants, and the equipment is extensive For industries such as chemical industry, food, pharmacy, coating, oil, resins.Vertical blade filter 2 covers according to standard and is equipped with eye spiral shell Bolt and hoop nut, quickly and easily to open capping, install hydraulic pressure davit in capping.According to different application and what is be removed be Dry or hygrometric state filter cake, filter can be equipped with oscilator system or a swingable spray head.
As shown in figure 1, on the basis of above-described embodiment, further, slurry oil equipment for separating liquid from solid also includes secondary mistake Filter 3;Aflter-fillter 3 connects with leaf filter 2, is filtered again for the slurry oil after leaf filter 2 is filtered.
In the present embodiment, by setting aflter-fillter 3, the slurry oil that leaf filter 2 filters is passed through to secondary filter In device 3, aflter-fillter 3 is filtered again to slurry oil, so as to improve filtering accuracy.
Wherein, aflter-fillter 3 can be cross-flow filter 31, or the filter of other forms.
Aflter-fillter 3 can be one, or more than two multiple.
Fig. 4 be Fig. 1 shown in slurry oil equipment for separating liquid from solid in cross-flow filter structural representation, such as Fig. 1 and Fig. 4 institutes Show, on the basis of above-described embodiment, further, aflter-fillter 3 is cross-flow filter 31;Set on cross-flow filter 31 There are slurry oil import, slurry oil outlet and purified liquor outlet;There is the outlet of slurry oil import and leaf filter 2;Slurry oil exports and leaf The inlet communication of piece filter 2.
In the present embodiment, aflter-fillter 3 is arranged to cross-flow filter 31, the primary oil after the filtering of leaf filter 2 Slurry clear liquid enters to cross-flow filter 31, and cross-flow filter 31 is filtered again to slurry oil.The two level slurry oil clear liquid filtered out Flowed out from purified liquor outlet, the concentrate after filtering is flow back into leaf filter 2 by slurry oil outlet.
In the present embodiment, aflter-fillter 3 is arranged to cross-flow filter 31, refined filtration is carried out to slurry oil, cross-flow filtration can To control filter cake thickness by the diameter of coutroi velocity and screen pipe 312, while employ the leaf filter of filter aid The catalyst that the overwhelming majority is rich in gum asphalt is deviate from, the step screen pipe 312 of cross-flow filter 31 blocks probability Very little, it is basic not have to backwash.
On the basis of above-described embodiment, further, leaf filter 2 is multiple;The import of each leaf filter 2 Connected with blender 1, the slurry oil inlet communication exported with cross-flow filter 31 of each leaf filter 2.
In the present embodiment, leaf filter 2 is arranged to multiple, 1 mixed filter aid of blender is passed through at most simultaneously In individual leaf filter 2, multiple leaf filters 2 filter to slurry oil simultaneously, improve filter efficiency.
On the basis of above-described embodiment, further, blender 1 is connected by valve with multiple leaf filters 2.
In the present embodiment, valve is set between blender 1 and multiple leaf filters 2, user can pass through valve control Make multiple handover operations of leaf filter 2.That is, when partial blade filter 2 is cleared up, remaining leaf filter 2 It is operated.When remaining leaf filter 2 needs cleaning, upper part leaf filter 2 works, and can so make filter process Do not interrupt, improve filter efficiency.
Wherein, valve may include more sub- valves, and each leaf filter 2 is connected by a sub- valve with blender 1 Connect.User opens corresponding sub- valve and can connect corresponding leaf filter 2 with blender 1.Valve can also be threeway Valve etc..
On the basis of above-described embodiment, further, cross-flow filter 31 is multiple;Multiple leaf filters 2 with it is more Individual cross-flow filter 31 connects one to one.
In the present embodiment, each leaf filter 2 is connected into a cross-flow filter 31, after leaf filter 2 filters Slurry oil, which enters in corresponding cross-flow filter 31, to be filtered, and multiple cross-flow filters 31 work simultaneously, improve filter efficiency.
Fig. 2 is the structural representation for the slurry oil equipment for separating liquid from solid that another embodiment of the utility model provides;Such as Fig. 2 institutes Show, on the basis of above-described embodiment, further, leaf filter 2 and cross-flow filter 31 are two.
In the present embodiment, leaf filter 2 and cross-flow filter 31 are disposed as two, two Hes of leaf filter 2 Two cross-flow device switch operatings, convenient use.
On the basis of above-described embodiment, further, the pump housing is provided between blender 1 and leaf filter 2;The pump housing For the filter aid in blender 1 to be pumped to leaf filter 2.
In the present embodiment, the filter aid in blender 1 is pumped to leaf filter 2 by the pump housing, reduces filtering Time, further improve filter efficiency.
As shown in Figure 1 and Figure 4, on the basis of above-described embodiment, further, cross-flow filter 31 includes filter housing 311 and the screen pipe 312 that is arranged in filter housing 311;Screen pipe 312 is step screen pipe 312.
In the present embodiment, for cross-flow filter 31 using step screen pipe 312, step screen pipe 312 has the base of macroporsity Layer and the filtering layer of aperture porosity form, and the filtering accuracy scope of screen pipe 312 is 0.2-5 microns.Using asymmetric step knot Structure can effectively ensure the precision of filtering, while pressure drop is relatively low, is not easily blocked, and resistance is small, and flow velocity is fast, and filter efficiency is high. Crossflow filtration technique and step screen pipe 312 are by means of while separation using filter aid auxiliary with two-stage, upstream can be selected Formula cross-flow filter 31 or downflow system cross-flow filter 31.Therefore backwash number is few, in the case that operation conditions is good Substantially the backwash of filter can be cancelled, in the absence of the situation that blocks of screen pack or screen pipe 312, save largely because blocking and Change the expense of screen pack or screen pipe 312.
The temperature range of whole separator is 250-350 DEG C, filter pressure 0.5-1.2MPa, and leaf filter 2 is pre- If highest pressure difference is 0.20-0.35MPa.
The slurry oil equipment for separating liquid from solid biggest advantage that this implementation provides is exactly long lifespan, and operating cost is low, solid deslagging, Farthest utilize catalytic slurry.Existing filtration system can only work 3 months or so for the slurry oil of the matter containing colloidal pitch Just need to change screen pipe 312, and device of the present utility model can work 1-3, or even longer time.
On the basis of above-described embodiment, further, the utility model embodiment also provides a kind of catalytic cracking system, The catalytic cracking system includes catalytic cracking unit and such as slurry oil equipment for separating liquid from solid provided by the utility model;Catalytic cracking Device connects with blender 1.Wherein, the principle of slurry oil equipment for separating liquid from solid is same as above, and will not be repeated here.
Finally it should be noted that:Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System;Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand:It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole Technical characteristic carries out equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (10)

  1. A kind of 1. slurry oil equipment for separating liquid from solid, it is characterised in that including:Blender and leaf filter;
    The blender connects with the leaf filter;The blender is used to filter aid is mixed and inputted to the blade In filter;The leaf filter is used to filter slurry oil.
  2. 2. slurry oil equipment for separating liquid from solid according to claim 1, it is characterised in that also including aflter-fillter;Described two Secondary filter connects with the leaf filter, is filtered again for the slurry oil after the leaf filter is filtered.
  3. 3. slurry oil equipment for separating liquid from solid according to claim 2, it is characterised in that the aflter-fillter is cross-flow filtration Device;
    Slurry oil import, slurry oil outlet and purified liquor outlet are provided with the cross-flow filter;It is described to have slurry oil import and the leaf The outlet of piece filter;The slurry oil outlet and the inlet communication of the leaf filter.
  4. 4. slurry oil equipment for separating liquid from solid according to claim 3, it is characterised in that the leaf filter is multiple;Often The import of the individual leaf filter connects with the blender, the outlet of each leaf filter with the cross-flow The slurry oil inlet communication of filter.
  5. 5. slurry oil equipment for separating liquid from solid according to claim 4, it is characterised in that the blender by valve with it is multiple The leaf filter connection.
  6. 6. slurry oil equipment for separating liquid from solid according to claim 4, it is characterised in that the cross-flow filter is multiple;
    Multiple leaf filters connect one to one with multiple cross-flow filters.
  7. 7. slurry oil equipment for separating liquid from solid according to claim 6, it is characterised in that the leaf filter and the cross-flow Filter is two.
  8. 8. slurry oil equipment for separating liquid from solid according to claim 1, it is characterised in that the blender and the filter blade The pump housing is provided between device;The pump housing is used to pump the filter aid in the blender to the leaf filter.
  9. 9. slurry oil equipment for separating liquid from solid according to claim 3, it is characterised in that the cross-flow filter includes filter housing And it is arranged on the screen pipe in the filter housing;The screen pipe is step screen pipe.
  10. 10. a kind of catalytic cracking system, it is characterised in that including catalytic cracking unit and such as any one of claim 1-9 institutes The slurry oil equipment for separating liquid from solid stated;
    The catalytic cracking unit connects with the blender.
CN201720622616.1U 2017-05-31 2017-05-31 Slurry oil equipment for separating liquid from solid and catalytic cracking system Active CN207016732U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109011820A (en) * 2018-09-17 2018-12-18 中石化(洛阳)科技有限公司 Anisotropic membrane separator and catalytic slurry equipment for separating liquid from solid
CN111592909A (en) * 2019-02-20 2020-08-28 中国石油化工股份有限公司 Oil slurry filtering system and oil slurry filtering method thereof
CN111617535A (en) * 2020-04-22 2020-09-04 北京航天石化技术装备工程有限公司 Solid-liquid filtering and separating device and method
CN111662742A (en) * 2019-03-07 2020-09-15 中国石油化工股份有限公司 Catalytic cracking slurry oil filtering device and catalytic cracking slurry oil filtering method
CN112300828A (en) * 2019-08-02 2021-02-02 中国石油化工股份有限公司 Oil slurry purification device and oil slurry purification method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109011820A (en) * 2018-09-17 2018-12-18 中石化(洛阳)科技有限公司 Anisotropic membrane separator and catalytic slurry equipment for separating liquid from solid
CN111592909A (en) * 2019-02-20 2020-08-28 中国石油化工股份有限公司 Oil slurry filtering system and oil slurry filtering method thereof
CN111662742A (en) * 2019-03-07 2020-09-15 中国石油化工股份有限公司 Catalytic cracking slurry oil filtering device and catalytic cracking slurry oil filtering method
CN111662742B (en) * 2019-03-07 2024-04-23 中国石油化工股份有限公司 Catalytic cracking slurry oil filter device and catalytic cracking slurry oil filter method
CN112300828A (en) * 2019-08-02 2021-02-02 中国石油化工股份有限公司 Oil slurry purification device and oil slurry purification method
CN112300828B (en) * 2019-08-02 2024-03-08 中国石油化工股份有限公司 Device and method for purifying slurry oil
CN111617535A (en) * 2020-04-22 2020-09-04 北京航天石化技术装备工程有限公司 Solid-liquid filtering and separating device and method

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