CN1319621C - Gas-solid separator with central exhaust pipe - Google Patents
Gas-solid separator with central exhaust pipe Download PDFInfo
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- CN1319621C CN1319621C CNB2005100775788A CN200510077578A CN1319621C CN 1319621 C CN1319621 C CN 1319621C CN B2005100775788 A CNB2005100775788 A CN B2005100775788A CN 200510077578 A CN200510077578 A CN 200510077578A CN 1319621 C CN1319621 C CN 1319621C
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Abstract
The present invention relates to a gas-solid separator with a central exhaust pipe, which comprises a gas-solid mixed phase inlet section, a separator casing, a central exhaust pipe, a transverse plate and a grain outlet section, wherein the separator casing is composed of a circular arc section casing, a gas-solid mixed phase inlet section casing which extends on both sides and a one grain outlet section casing; the gas-solid mixed phase inlet section and the grain outlet section are opened in the same direction and are respectively connected to both sides of a separator cavity formed by the circular arc section casing and the transverse plate; the central exhaust pipe is provided with at least a slotted pipe body for a pipe wall; one end of the pipe body is arranged in the separator cavity, and the other end of the pipe body extends out of the separator cavity for connecting a subsequent separating system. The present invention can be used as a gas-solid mixed phase primary separator for a post-burning pipe or the outlet of a riser reactor. The present invention has the advantages of simple and compact structure, high-efficiency and high-speed separation and great operating flexibility.
Description
Technical field
The present invention relates to a kind of gas-solid separating device, belong to the chemical separating equipment technical field, be particularly useful for the gas solid separation technology in the petrochemical industry with central row tracheae.
Background technology
Catalytic cracking is a processing technology important in the petroleum refining industry, and wherein the effective regeneration of catalyst system therefor is the important means that guarantees that catalyst can recycle, cracking reaction can be carried out continuously.Because increasing the weight of year by year of catalytically cracked material, the regeneration load also increases day by day.In catalyst regeneration process, burn tubular type regeneration as a kind of efficient, no bubble gas-solid contact technique not only burns intensity big (be about conventional regeneration technology 5-6 times), and can make phosphorus content less than 0.05-0.1% (wt%), and many application are arranged.Burn in the tubular type regeneration technology, reclaimable catalyst is introduced into the conventional regeneration device implements part and burn, and then enter coke-burning riser and continue to burn, such technology had both been brought into play the advantage that tubular type is burnt, also overcome its deficiency, be called rearmounted coke-burning riser combination regeneration technology.This technology both had been fit to new device, also was fit to the transformation to existing apparatus, and can change very for a short time in transformation process to existing apparatus, just increased a rearmounted coke-burning riser that floor space is very little, and coke-burning capacity can improve 40%.For bringing into play the advantage of this technology, the gas-solid separating device that is used for coke-burning riser outlet is satisfying under the prerequisite that separative efficiency and pressure drop require the compact of also should trying one's best.
Cyclone separator is a kind of equipment most widely used in the gas solid separation process, yet it is bulky, and pressure drop yet higher (generally all more than 2000Pa) is not suitable for above-mentioned regeneration technology.In recent years, the less separator of volume also has report, wall-attached cutting type gas-solid quick disconnector as Chinese patent 00105781.2, it utilizes the difference of gas-solid two-phase inertia force, the wall attachment effect of movement of particles and the cutting and separating effect of locus to combine, and can realize gas solid separation rapidly and efficiently.But its complex structure, must rely on auxiliary equipment such as cutting plate to realize separating effect, and this separator at work gas-solid mixture must enter separator (referring to the description of this patent specification and the signal of accompanying drawing 2) from the top down, if be applied to from for example coke-burning riser or the upwards separation of mobile gas-solid mixture of riser outlet, must it be transferred to by 180 ° of elbows and flowing downward, the adding of elbow has more increased the complexity of device, also can increase the wearing and tearing of power consumption and particle and equipment room simultaneously.
Summary of the invention
The objective of the invention is to design the simpler and compact gas-solid separating device of a kind of structure, by having the setting of the central row tracheae that cracks, inertia is combined with centrifugation mechanism, can realize that gas-solid rapidly and efficiently separates, especially be fit to directly apply to rearmounted coke-burning riser or riser reactor exit.
Gas-solid separating device with central row tracheae provided by the invention, comprise that gas-solid mixes phase entrance, separator shell, central row tracheae, transverse slat and particle outlet section, wherein: separator shell is formed by an arc section shell with to the entrance shell and the outlet section shell of both sides extension; Gas-solid mixes phase entrance and particle outlet segment base, and this is opening in the same way, is connected to the both sides of the separator cavity that arc section shell and transverse slat surround respectively; The central row tracheae is that tube wall offers at least one body that cracks, and an end of this body is arranged in the described separator cavity, and end stretches out this cavity for connecting subsequent separation system in addition.
According to preferred version of the present invention, described gas-solid mixes the phase entrance and is the vertical setting that Open Side Down with the particle outlet section, and the shell of its both sides links to each other with arc section shell both sides respectively, promptly, outward appearance forms like " ∩ " shape, and inboard vertical section upper end links to each other with the transverse slat two ends respectively.
Gas-solid separating device of the present invention realizes that the principle of gas solid separation is, when gas-solid mixture enters the separator cavity through gas-solid mixing phase entrance, because the inertia of particle is much larger than gas in the Dual-Phrase Distribution of Gas olid, gas phase can turn to suddenly from cracking and enter the central row tracheae during through the central row tracheae, particle then moves in a circle according to the arc section of inertia along separator shell, discharge from particle outlet, make the gas-solid two-phase by the difference of inertia and separated.Consider that from improving separating effect the central row tracheae tube wall that is provided with in the separator of the present invention requires to offer cracking of one or more, the width that cracks is 1-20mm.More preferably described cracking is vertically offering along this blast pipe basically.
The quantity of cracking that the present invention offers center blast pipe tube wall is not particularly limited, generally should offer one or more, can control every adjacent two central angles that on the central tube cross section, constituted that crack and should be 10-170 °, referring to the angle β among Fig. 2, crack and on tube wall, to be evenly distributed, but be not necessary.More preferably angle beta is 10-60 °, that is, and and by the closeer separation of design raising of cracking to gas phase.
Being provided with the central row tracheae that cracks is one of key feature of the present invention, the gas phase of gas-solid mixture phase is cracked from this enter the blast pipe, realizes the separation between the gas-solid mutually.The angle of cracking is to define with angle α between the radius of crossing this extended line and central tube outer wall circumference intersection point along the extended line of the direction of cracking, run through under the prerequisite of this side pipe wall guaranteeing to crack, this α angle can be 0-85 °, can be referring to the angle α among Fig. 2, promptly, the normal direction that can be designed as vertical tube wall crack (α is essentially 0 °), also can offer and be tangential cracking according to certain angle, preferred α angle is between 20-80 °, and the direction of tangentially cracking is along the gas-solid mixture to be separated flow direction in the separation cavity.
Need to prove, of the present invention cracking is actually the very little narrow slit of the width that cracks than the caliber of central row tracheae, so " along cracking the extended line of direction " that the present invention adopts when defining the α angle can draw from one of two sidewalls that crack (width that especially ought crack hour), also can draw from the center line that cracks, though its angle value may have certain deviation, as long as all in institute's limited range, the narrow slit of being offered can not produce remarkable influence to the invention process effect.
In the separator of the present invention, the central row tracheae preferably is concentric setting with the arc section of separator shell.
The gas-solid that gas-solid separating device of the present invention especially can be used as from coke-burning riser or riser reactor outlet mixes the primary separation device of phase.Through experiment measuring, separative efficiency can reach more than 98%, and the overall presure drop of separator is between 500-2000Pa.The central row tracheae stretch out separate cavity an end can with secondary gas solid separation system, link to each other as cyclone system, catalyst granules then returns the conventional regeneration device or enters stripper plant by particle outlet.Above-mentioned separator also comprised with gas-solid and mixed the changeover portion that entrance mutually links to each other this moment, and described changeover portion upper port mixes mutually with gas-solid that inlet links to each other, and lower port can adapt with coke-burning riser or riser reactor main body; The structure of the lower port of particle outlet section can adapt with the port of catalyst regenerator or stripper (also can pass through suitable changeover portion when needing).
Preferably, the architectural feature of above-mentioned separator can further describe for: the ratio R/dr of the diameter d r of the radius R of shell arc section and coke-burning riser or riser reactor main body is 0.6-1.1; The height H 3 of changeover portion is 0.7-1.2dr; The cross section that gas-solid mixes the phase entrance is a rectangle, and the wide W1 of rectangle is 0.4-0.5R, and long L is 1-3R, and it is vertical panel that this gas-solid mixes phase entrance shell, links to each other with the shell arc section, and its height H 1 is 2-3R; Particle outlet section cross section is a rectangle, and rectangle width W 2 is 0.4-0.5R, and length L is consistent with the length L that gas-solid mixes phase entrance cross section rectangle, and this particle outlet section shell is a vertical panel, links to each other with the shell arc section; The transverse slat of described central row tracheae below is straight plate, is 0.2-0.5R apart from the distance H 2 of central row tracheae; Described crack to be tangentially offer, and along vertical setting of blast pipe, its angle [alpha] of cracking is 20-80 °, and the setting of the direction of cracking mixes from inlet consistent to the flow direction of particle outlet with gas-solid.
As can be seen, separator of the present invention is compared with one type of prior art syringe, simple and compact equipment structure and more reasonable, has the central row tracheae that cracks simultaneously being provided with, gas-solid mixes the inlet and the particle outlet of phase and is arranged in the same way (all downward), central tube top shell is the arc section setting, make the solid particle of gas-solid in mixing mutually in separator, experience 180 ° circular motion along the arc section shell, help the separation of gas-solid phase in this process, thereby the whole detached job process particle time of staying is short, the separative efficiency height, operating flexibility is big, and it is also smaller to wear and tear.
Description of drawings
Fig. 1 is the gas-solid separating device master TV structure schematic diagram that has the central row tracheae that tangentially cracks of the present invention.
Fig. 2 is the gas-solid separating device left side TV structure schematic diagram that has the central row tracheae that tangentially cracks of the present invention.
Fig. 3 is the partial schematic diagram of the center exhaust pipe structure of separator of the present invention.
Fig. 3 A is an A-A schematic cross-section among Fig. 3.
Fig. 4 is used for the embodiment schematic diagram of rearmounted coke-burning riser outlet for separator of the present invention.
Fig. 5 is the test curve that separates efficient and separator pressure-drop when utilizing separator of the present invention to implement gas solid separation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the beneficial effect of enforcement of the present invention and generation is made further instruction, be intended to help the reader to understand design essence of the present invention place better, but should not be construed as qualification the scope of the present invention.
See also Fig. 1, Fig. 2, Fig. 3 and Fig. 3 A, for the present invention preferably has the gas-solid separating device schematic diagram of the central row tracheae that tangentially cracks, comprise changeover portion 2, gas-solid mix phase entrance 3, by arc section shell 6 and prolong separator shell, band that the outlet section shell 8 of entrance shell 4 that the gas-solid that forms mixes phase entrance 3 and particle outlet section 9 combines to both sides and tangentially crack 7 ' central row tracheae 7, central tube below transverse slat 5 and particle outlet section 9.Wherein changeover portion 2 can link to each other with the main body of coke-burning riser or riser reactor 1, particle outlet section 9 can link to each other with conventional regeneration device or stripper plant (also can pass through changeover portion when needing), central row tracheae 7 link to each other with follow-up gas solid separation system (the application example that can consult Fig. 4 simultaneously);
Separator shell extends the entrance shell 4 of the gas-solid mixing phase entrance 3 that links to each other by arc section shell 6 and both sides and the outlet section shell 8 of particle outlet section 9 is formed.The ratio R/dr of the main diameter dr of the radius R of arc section shell 6 and coke-burning riser or riser reactor 1 is preferably 0.6-1.1, and the height H 3 of changeover portion 2 is 0.7-1.2dr.The cross sectional shape that gas-solid mixes phase entrance 3 is a rectangle, the wide W1 of this rectangle is 0.4-0.5R, long L is 1-3R, and changeover portion 2 upper port cross sections are rectangular, promptly, wide is W1, long is L, and entrance shell 4 is a vertical panel, links to each other with arc section shell 6, its height H 1 is 2-3R, and inboard vertical panel 10 links to each other with central row tracheae 7 below transverse slats 5; The cross section of particle outlet section 9 also is a rectangle, rectangle width W 2 is 0.4-0.5R, and length L is consistent with the rectangle entrance length L that gas-solid mixes phase entrance 3, and outlet section shell 8 is a vertical panel, link to each other with arc section shell 6, rectangle opposite side vertical panel 11 links to each other with the transverse slat 5 of central row tracheae 7 belows; Central row tracheae 7 below transverse slats 5 are straight plate, and transverse slat 5 is 0.2-0.5R apart from the distance H 2 of central row tracheae 7, and gas-solid mixing phase entrance 3 and particle outlet section 9 are setting vertically downward.
In the practical application, after gas-solid mixture leaves the reactive agent of coke-burning riser 1 or riser reactor 1, changeover portion 2 through this separator enters gas-solid mixing phase entrance 3, because the inertia of particle is much larger than gas in the Dual-Phrase Distribution of Gas olid, meet 7 ' time gas phase to turn to suddenly through central row tracheae 7 narrow through tangential narrow slit 7 ' enter central row tracheae 7, particle then can move in a circle along the separator shell arc section according to inertia, after 180 °, discharge by particle outlet section 9 straight down, thereby realize gas solid separation according to inertia difference.Also have in this process portion gas with particle through 180 ° of circular motion; when particle enters particle outlet section 9 downwards; this part gas can be carried the small part particle secretly and return from 7 times side spaces of center blast pipe around central row tracheae 7; in the return course; the gas-solid two-phase relies on the centrifugal force difference to separate; isolated particle is sneaked into the inlet material and is separated once more, and gas then continues by the narrow slit 7 of central row tracheae 7 ' discharge.Simultaneously, the Dual-Phrase Distribution of Gas olid of returning has an impetus to shell 4 to the gas-solid mixture of entrance 3, makes particle be tending towards moving along shell, helps gas solid separation.
Below in conjunction with tangentially the crack application example of gas-solid separating device in rearmounted coke-burning riser combination regeneration technology of central row tracheae of the band of accompanying drawing 4 explanation the present invention design.
Reclaimable catalyst enters rearmounted coke-burning riser L-2 through inclined tube L-6 and pre-lifter L-1 and further burns after conventional turbulent bed regenerator L-5 partly burns.The regenerated catalyst that is come out by rearmounted coke-burning riser L-2 enters above-mentioned gas-solid separating device L-3.Abide by above-mentioned separation principle and process, the flue gas after the separation enters the next stage piece-rate system through gas phase delivery line (that is, above-mentioned central row tracheae 7), as cyclone system L-4.It (is the measurement that makes things convenient for experimental data in the present embodiment that particle after the separation returns conventional regeneration device L-5 by particle outlet, particle after the separation just returns conventional regeneration device L-5 after having passed through a material collecting barrel L-7 by particle outlet, also can directly return regenerator L-5 through a dipleg L-8).
Adopt the catalytic cracking poising agent as the experiment particle, grain density is 1500kg/m
3, bulk density is 916.67kg/m
3, average grain diameter 68 μ m carry out the simulated experiment of separating effect.
The gas-solid that is mixed with described particle is mixed from gas-solid mixing phase entrance 3 enter separator, measure separative efficiency and separator pressure-drop respectively, curve plotting, as shown in Figure 5.
From this curve map as can be seen, adopting separator of the present invention that gas-solid mixture is separated, is 72.84kg/m at the cycle rate of particle
2During s, separative efficiency is more than 98%, and separator pressure-drop also remains on about 300-1600Pa.
It should be noted last that; above embodiment is only unrestricted in order to technical scheme of the present invention to be described; although preferred embodiment has been described in detail the present invention; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention; and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of protection scope of the present invention.
Claims (9)
1, a kind of gas-solid separating device with central row tracheae is characterized in that, this gas-solid separating device comprises that gas-solid mixes phase entrance, separator shell, central row tracheae, transverse slat and particle outlet section, wherein:
Separator shell is formed by an arc section shell and to gas-solid mixing phase entrance shell and the particle outlet section shell that extend on both sides; Gas-solid mixes the phase entrance and is the vertical setting that Open Side Down with the particle outlet section, and the shell of its both sides links to each other with arc section shell both sides respectively, and inboard vertical section upper end links to each other with the transverse slat two ends respectively; Arc section shell and transverse slat surround the separator cavity; The central row tracheae is that tube wall offers at least one body that cracks, and an end of this body is arranged in the described separator cavity, and end stretches out this cavity for connecting subsequent separation system in addition.
2, gas-solid separating device as claimed in claim 1 is characterized in that, central row tracheae tube wall offers cracking of one or more, and the width that cracks is 1-20mm.
3, gas-solid separating device as claimed in claim 1 is characterized in that, central row tracheae tube wall offers cracking of one or more, and described cracking is that the width that cracks is 1-20mm along vertically the offering of this blast pipe basically.
As claim 2 or 3 described gas-solid separating devices, it is characterized in that 4, every adjacent two central angles that constituted that crack of central row tracheae tube wall are 10-170 °.
5, claim 2 or 3 described gas-solid separating devices is characterized in that, described angle of cracking with this edge crack direction extended line and cross this extended line and the radius of central tube outer wall circumference intersection point between angle α definition, this α angle is 0-85 °.
6, the described gas-solid separating device of claim 5 is characterized in that, described crack to be tangentially offer, the α angle is 20-80 °, and the direction of direction for flowing along gas-solid mixture of cracking.
7, gas-solid separating device as claimed in claim 1 is characterized in that, the central row tracheae is concentric setting with the arc section of separator shell.
8, as each described gas-solid separating device of claim 1-3, it is characterized in that, this separator also comprises with gas-solid and mixes the changeover portion that entrance mutually links to each other, arrival end is continuous mutually with the gas-solid mixing for described changeover portion upper port, and lower port can adapt with coke-burning riser or riser reactor main body; The structure of the lower port of particle outlet section can adapt with the port of catalyst regenerator or stripper.
9, gas-solid separating device as claimed in claim 8 is characterized in that, the ratio R/dr of the diameter d r of the radius R of separator shell arc section and coke-burning riser or riser reactor main body is 0.6-1.1; The height H 3 of changeover portion is 0.7-1.2dr; The cross section that gas-solid mixes the phase entrance is a rectangle, and the wide W1 of rectangle is 0.4-0.5R, and long L is 1-3R, and it is vertical panel that this gas-solid mixes phase entrance shell, links to each other with the shell arc section, and its height H 1 is 2-3R; Particle outlet section cross section is a rectangle, and the wide W2 of rectangle is 0.4-0.5R, and length L is consistent with the length L that gas-solid mixes phase entrance cross section rectangle, and this particle outlet section shell is a vertical panel, links to each other with the shell arc section; The transverse slat of described central row tracheae below is straight plate, distance H 2 apart from the central row tracheae is 0.2-0.5R, tube wall cracks to be tangentially and offers, the angle of cracking is to define with angle α between the radius of crossing this extended line and central tube outer wall circumference intersection point along the extended line of the direction of cracking, this α angle is 20-80 °, and the direction of cracking is along the gas-solid mixture flow direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100775788A CN1319621C (en) | 2005-06-20 | 2005-06-20 | Gas-solid separator with central exhaust pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100775788A CN1319621C (en) | 2005-06-20 | 2005-06-20 | Gas-solid separator with central exhaust pipe |
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| CN1739840A CN1739840A (en) | 2006-03-01 |
| CN1319621C true CN1319621C (en) | 2007-06-06 |
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|---|---|---|---|
| CNB2005100775788A Active CN1319621C (en) | 2005-06-20 | 2005-06-20 | Gas-solid separator with central exhaust pipe |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106606999B (en) * | 2015-10-22 | 2020-03-24 | 中国石油化工股份有限公司 | Fluidized bed reactor |
| CN108014724B (en) * | 2016-10-28 | 2020-03-24 | 中国石油化工股份有限公司 | Catalyst particle pre-separator, fluidized bed reactor and application thereof |
| CN112121538A (en) * | 2019-06-24 | 2020-12-25 | 中国石油天然气集团有限公司 | Gas-solid separation device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174799A (en) * | 1990-04-06 | 1992-12-29 | Foster Wheeler Energy Corporation | Horizontal cyclone separator for a fluidized bed reactor |
| CN2434066Y (en) * | 2000-06-05 | 2001-06-13 | 中国石油化工集团公司 | Interception return volute cyclone separator arranged exhaust pipe with guide groove |
-
2005
- 2005-06-20 CN CNB2005100775788A patent/CN1319621C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174799A (en) * | 1990-04-06 | 1992-12-29 | Foster Wheeler Energy Corporation | Horizontal cyclone separator for a fluidized bed reactor |
| CN2434066Y (en) * | 2000-06-05 | 2001-06-13 | 中国石油化工集团公司 | Interception return volute cyclone separator arranged exhaust pipe with guide groove |
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