CN107224942A - The device and application method of a kind of riser coupling cycle fluidized-bed reactor common regenerator - Google Patents
The device and application method of a kind of riser coupling cycle fluidized-bed reactor common regenerator Download PDFInfo
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- CN107224942A CN107224942A CN201710547745.3A CN201710547745A CN107224942A CN 107224942 A CN107224942 A CN 107224942A CN 201710547745 A CN201710547745 A CN 201710547745A CN 107224942 A CN107224942 A CN 107224942A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/26—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/0025—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor by an ascending fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/005—Separating solid material from the gas/liquid stream
- B01J8/007—Separating solid material from the gas/liquid stream by sedimentation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/0873—Materials to be treated
- B01J2219/0892—Materials to be treated involving catalytically active material
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- Y02P20/584—Recycling of catalysts
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Abstract
The device and application method of a kind of riser coupling cycle fluidized-bed reactor common regenerator disclosed by the invention, described device includes regenerator, circulating fluid bed reactor, riser reactor, horizontal conveying pipe and regenerator sloped tube, regenerative agent lifts inclined tube and spent agent lifting inclined tube, regenerator gas vapor, which is communicated with, in the close phase section bottom of the regenerator puies forward section, recirculating fluidized bed gas vapor, which is communicated with, in the close phase section of the circulating fluid bed reactor puies forward section, regenerative agent outlet of the bottom of riser reactor by the regenerator sloped tube with carrying section bottom positioned at regenerator gas vapor is connected, top is connected by the horizontal conveying pipe with circulating fluid bed reactor settling section；The close phase section of recirculating fluidized bed is connected by the regenerative agent outlet that regenerative agent lifts inclined tube with regenerator gas vapor carries section bottom, and the spent agent outlet that recirculating fluidized bed gas vapor carries section bottom is connected by spent agent lifting inclined tube with the close phase section of regenerator.It can both carry out riser experiment, can also carry out recirculating fluidized bed experiment by sharing a regenerator.
Description
Technical field
The invention belongs to technical field of petrochemical industry, a kind of riser reactor and circulating fluid bed reactor are related generally to
Coupling and the device and its application method for sharing a set of regenerator.
Background technology
Riser reactor is the nucleus equipment of catalytic cracking unit, and its is simple in construction, continuous high-efficient, and treating capacity is big, special
It is not suitable for reaction time shorter gas-solid heterogeneous reaction, such as catalytic cracking reaction, catalytic dehydrogenating reaction etc..It is ciculation fluidized
Bed reactor has gas-solid flux high, and bed temperature is uniform, mass-and heat-transfer efficiency high, it is easy to the advantages of serialization is with automating,
It is suitable for reaction time longer gas-solid heterogeneous reaction, such as hydrogen transfer reaction, isomerization reaction, aromatization.Lifting
Pipe reactor and circulating fluid bed reactor belong to gas-solid non-equal fluidizing reactor, have other type of reactor to be difficult to
The advantage of analogy, as one of the area researches such as the energy, chemical industry, metallurgy, biology, environmental protection and most widely used technology.
But, the easy green coke of fluidizing reactor catalyst surface, activity decrease is fast, it is necessary to constantly carry out cyclic char to catalyst
Regeneration.At present, the general practice of petroleum chemical industry is that catalyst circulation is set up between fluidizing reactor and regenerator, i.e.,
The reclaimable catalyst of coking and deactivation in course of reaction is transported in regenerator and burnt, the regenerated catalyst of activity recovery is followed
Loopback reactor is continuing with, so repeatedly.
It is known that a kind of new fluidization production technology of exploitation, generally requires and different types of reactor is tried
Checking, to determine optimal reactor types, this process workload is big, cost is more, the cycle is long, have impact on development
Progress, therefore, develops multi-functional manifold type fluidizing reactor and experimental rig, meets fluidization technology developing direction.Mesh
Before, the riser of document report is general by the way of coupling up and down with fluid bed coupled reactor, i.e., riser reactor exists
On, fluidized-bed reactor is under, or riser reactor is under, and fluidized-bed reactor is respective using two kinds of reactors upper
Feature, completes different types of chemical reaction in same technique.Such as：The coupled reactor that Cui Gang and Qin little Gang et al. are proposed is equal
It is coupled mode of the riser reactor in upper, fluidized-bed reactor under（The such as Cui Gang fluid beds-riser coupled reaction
The axial direction distribution of solid holdup and flow development [J], process engineering journal 2014,14 in device（4）：556-561；The small firm grade of the Qin
The flow behavior [J] of pitch particle, process engineering journal 2013,13 in fluid bed-riser coupled reactor（4）：563-
566）；The catalytic cracking process (MIP) of the maximizing iso-paraffins of Beijing Petroleum Chemical Engineering Institute exploitation is then typical riser
Reactor is under, fluidized-bed reactor is in upper CGCM（Perhaps the catalytic cracking process two of the maximizing iso-paraffins such as close friend
Individual reaction zone concept experimental study [J], petroleum journal（PETROLEUM PROCESSING）2004,20（4）：1-5）.Chinese patent ZL
200720306013.7 disclosing a kind of low carbon alkane catalytic dehydrogenation olefin hydrocarbon apparatus of lift pipe circulating fluidized bed, mainly pass through catalysis
Dehydrogenation and quick burn are heated respectively in different system progress, and are coupled by circulating, and form a reaction regeneration circulatory system；
Low-carbon alkanes catalytic dehydrogenation olefine reaction is carried out in a fluidized bed reactor, and catalyst, which quickly burns to regenerate in riser, to be heated
Carried out in device, catalyst carries out ciculation fluidized between fluidized-bed reactor and riser regenerative heater；This coupled modes
Advantage be that the effective offer being carried out continuously with heat of catalytic dehydrogenating reaction is provided, carbon alkane catalytic dehydrogenation alkene conversion
Rate is high, and cost simple to operate is low；Have the disadvantage to instead of fluid bed regenerator with riser, coke-burning capacity is greatly reduced；Therefore, this
Kind of coupled mode is only applicable to green coke amount very low chemical reaction.Chinese patent CN 1861753A disclose one kind and use gasoline
The catalysis conversion method and device of heavy oil coupling reactor, it is characterised in that catalytic cracking unit is provided with heavy oil and gasoline two
Individual reactor, a settler and a stripper, share regenerating section；The conversion zone of gasoline reactor evaporates by riser,
Conversion zone is composited with fast fluidized bed conversion zone, heavy oil reactor include two reaction zones, lower section be total amount for regeneration
The zone of cracking that agent and part of gasoline catalysts environment are reacted, top is the of further supplement gasoline catalysts
Petrol gas cyclone separator is provided with two reaction zones, second reaction zone；The circulation process of its catalyst is to come from regenerator
Regenerated catalyst is divided into two parts, enters the pre lift zone of gasoline reactor and heavy oil reactor simultaneously respectively, from gasoline reaction
A part of (19A) is reacted into used catalyst in device to introduce through delivery pipe in the pre lift zone of heavy oil reactor bottom, with
Heavy oil reaction is participated in regenerated catalyst mixing from regenerator, makes another part (19B) reaction from gasoline reactor outlet
Used catalyst is introduced in the middle part of heavy oil reactor, is participated in the catalyst after heavy oil reaction, end reaction and is passed through heavy oil reactor
Regenerator is returned after into settler separation stripping.Its advantage is to improve purpose product quality, improves the total recovery of device；
Have the disadvantage that the structure and catalyst recycle stream journey of reactor are excessively complicated, it is difficult to control and implementation, and two reactors can only be same
Shi Yunhang, it is impossible to work independently, completes different types of chemical reaction.
The content of the invention
The purpose of the present invention is the defect for prior art, proposes that a kind of riser coupling cycle fluidized-bed reactor is total to
With the device and application method of regenerator, solve existing riser and fluid bed coupled reactor/apparatus structure and flow is multiple
The problem of miscellaneous, function is single, each reactor is unable to independent operation, so as to reach structure and flow, the reality of simplified coupled reactor
Existing different reactor independent operation, the purpose widened device application field, save plant investment.
The present invention realizes that the technical scheme that above-mentioned purpose is used is：A kind of riser coupling cycle fluidized-bed reactor is total to
With the device of regenerator, including regenerator, circulating fluid bed reactor, riser reactor, horizontal conveying pipe and regenerator sloped tube,
The regenerator includes regenerator settling section and the close phase section of regenerator, and the circulating fluid bed reactor is heavy including recirculating fluidized bed
Section and the close phase section of recirculating fluidized bed are dropped, and the riser reactor is coupled by horizontal conveying pipe with recirculating fluidized bed settling section,
Also include regenerative agent and lift inclined tube and spent agent lifting inclined tube, regeneration is communicated with the close phase section bottom of the regenerator of the regenerator
Device gas vapor puies forward section, and the close phase section of circulating fluid bed reactor in the circulating fluid bed reactor bottom is communicated with ciculation fluidized
Bed gas vapor puies forward section, and the bottom of the riser reactor carries section bottom by the regenerator sloped tube and positioned at regenerator gas vapor
Regenerative agent outlet is connected, and top is connected by the horizontal conveying pipe with circulating fluid bed reactor settling section；Recirculating fluidized bed
Close phase section is connected by the regenerative agent outlet that regenerative agent lifts inclined tube with regenerator gas vapor carries section bottom, recirculating fluidized bed gas vapor
The spent agent outlet for carrying section bottom is connected by spent agent lifting inclined tube with the close phase section of regenerator.
Further, on the horizontal conveying pipe provided with valve, on regenerator sloped tube provided with valve, spent agent lifting inclined tube
Valve is provided with provided with valve, regenerative agent lifting inclined tube, four valves are respectively provided with regulation flow and cutting function.
Further, the raw device gas vapor carries the positive bottom that section is located at the close phase section of regenerator, with its up/down perforation.
Further, the recirculating fluidized bed gas vapor carries the positive bottom that section is located at the close phase section of recirculating fluidized bed, is passed through up and down with it
It is logical.
Further, wind entrance is lifted provided with regenerative agent with regenerative agent outlet connection in regenerative agent lifting inclined tube.
Further, wind entrance is lifted provided with spent agent with spent agent outlet connection in spent agent lifting inclined tube.
Further, the user of the device of described riser coupling cycle circulating fluid bed reactor common regenerator
Method, comprises the following steps：
（1）Operated by recirculating fluidized bed reaction-regenerative device
Valve on a, cut-out horizontal conveying pipe and regenerator sloped tube, is opened on regenerative agent lifting inclined tube and spent agent lifting inclined tube
Valve；
It is anti-that b, regenerated catalyst carry out gas-solid fluidization with the recirculating fluidized bed charging entered from the close phase pars infrasegmentalis of recirculating fluidized bed
Should；
C, reacted catalyst flow downwardly into recirculating fluidized bed gas vapor and put forward section, and the fluid bed of pars infrasegmentalis entrance is carried with gas vapor
Gas vapor puies forward the circulation of vital energy in the wrong direction and carried to contact progress gas vapor；
D, the reclaimable catalyst carried by gas vapor propose the catalyst outlet outflow of section bottom from fluid bed gas vapor, are carried in spent agent
Rise under wind action and to enter the close phase section of regenerator along spent agent lifting inclined tube, it is inverse with the main wind that enters from the close phase pars infrasegmentalis of regenerator
Coke burning regeneration is carried out to contact；
E, burn after regenerated catalyst flow downwardly into regenerator gas vapor and put forward section, with proposing pars infrasegmentalis entrance from regenerator gas vapor
Gas vapor carry the circulation of vital energy in the wrong direction to contact gas vapor carry after, from regenerator gas vapor carry section bottom outlet outflow, regenerative agent lifted wind work
With it is lower along regenerative agent lifting inclined tube enter the close phase section of circulating fluid bed reactor.
（2）Operated by riser reaction-regenerative device
Valve on a, cut-out regenerative agent lifting inclined tube, is opened on horizontal conveying pipe, regenerator sloped tube and spent agent lifting inclined tube
Valve；
B, the regenerated catalyst for proposing from regenerator gas vapor the catalyst outlet outflow of section bottom, flow into riser anti-along regenerator sloped tube
Device bottom is answered, is contacted with the riser charging entered from riser reactor bottom, to fluidize state cocurrent up to carrying
After at the top of riser reactors, enter recirculating fluidized bed settling section along horizontal conveying pipe and carry out gas solid separation；
C, gas phase are left at the top of circulating fluid bed reactor, and piece-rate system is reclaimed into product；
D, the catalyst isolated flow downwardly through the close phase section of recirculating fluidized bed, are carried into circulating fluid bed reactor gas vapor in section,
The circulation of vital energy in the wrong direction is put forward with the recirculating fluidized bed gas vapor entered from the pars infrasegmentalis to carry to progress gas vapor is contacted；
E, the reclaimable catalyst carried by gas vapor flow out from the catalyst outlet of fluid bed stripping section bottom, in spent agent lifting
Enter the close phase section of regenerator along spent agent lifting inclined tube under wind action, it is reverse with the main wind that enters from the close phase pars infrasegmentalis of regenerator
Contact carries out coke burning regeneration；
F, burn after regenerated catalyst flow downwardly into regenerator gas vapor and put forward section, with proposing pars infrasegmentalis entrance from regenerator gas vapor
Gas vapor carry the circulation of vital energy in the wrong direction to contact gas vapor carry after, from device gas vapor again carry section bottom outlet outflow, flow to riser along regenerator sloped tube
Reactor.
Further, described lifting wind is water vapour, air, nitrogen or hydrogen.
Further, described gas vapor carries gas for water vapour, nitrogen or helium.
The advantage of the invention is that：Described device simplifies the structure of circulating fluid bed reactor and riser reactor
And coupled mode, it is possible to use the settler of circulating fluid bed reactor realizes that the reaction product of riser reactor and solid are urged
Agent is separated；Circulating fluid bed reactor and riser reactor can independently work, and be respectively completed different types of chemistry
Reaction, has widened the scope of application of device；Gas vapor is provided with the bottom of circulating fluid bed reactor and the close phase section of regenerator
Section is put forward, gas vapor can be carried out to reclaimable catalyst and regenerated catalyst respectively and carried, can not to meet partial reaction requirement catalyst
The particular/special requirement of oxygen or water vapour is carried, the applicability of device is improved；Catalyst recycle stream journey is simplified, one is eliminated and urges
Agent delivery pipe, improves the stability and reliability of plant running.
Brief description of the drawings
Fig. 1 is schematic device of the present invention.
In figure, 1, regenerator；2nd, circulating fluid bed reactor；3rd, riser reactor；4th, regenerator sloped tube；5th, regenerative agent
Lift inclined tube；6th, spent agent lifting inclined tube；7th, horizontal conveying pipe；V1~V4, valve；F1, recirculating fluidized bed charging；F2, carry
Riser is fed；F3, main wind；F4, regenerative agent gas vapor carry gas；F5, recirculating fluidized bed gas vapor carry gas；F6, spent agent lifting wind；
F7, regenerative agent lifting wind；F8, regenerated flue gas；F9, reaction product；1-1, regenerator settling section；The close phase section of 1-2, regenerator；1-
3rd, regenerator gas vapor puies forward section；2-1, recirculating fluidized bed settling section；The close phase section of 2-2, recirculating fluidized bed；2-3, recirculating fluidized bed gas/
Stripping section.
Embodiment
In order that the object, technical solutions and advantages of the present invention are more apparent, below in conjunction with drawings and Examples to this hair
It is bright to be described in further detail.It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
In addition to being provided with gas vapor in the close phase section bottom of regenerator and circulating fluid bed reactor and putting forward section, it is described again
The other parts of raw device and circulating fluid bed reactor, and described valve and riser reactor are using known in this field
Form, is repeated no more.
In being described below, reclaimable catalyst and spent agent are meant that unanimously；The implication of regenerated catalyst and regenerative agent
It is consistent.
As shown in figure 1, the device of riser coupling cycle fluidized-bed reactor common regenerator of the present invention, mainly
Carried by regenerator 1, circulating fluid bed reactor 2, riser reactor 3, regenerator sloped tube 4, regenerative agent lifting inclined tube 5, spent agent
Rise inclined tube 6, horizontal conveying pipe 7 and valve V1~V4 compositions.
The regenerator 1 is followed successively by the close phase section 1-2 of regenerator settling section 1-1, regenerator and regenerator gas vapor from top to bottom
Carry and being mutually communicated between a section 1-3, and three sections.The effect of regenerator has two：One is that the catalyst of coking and deactivation is burnt
Jiao's regeneration, recovers the activity of catalyst；Two be to carry out gas vapor to the catalyst after regeneration to carry, by catalyst void and duct
Oxygen or the water vapour displacement of entrainment are clean, to meet partial reaction to oxygen content and the particular/special requirement of water content；Gas vapor carries gas
Selection water vapour, nitrogen or helium can be needed according to technique.The regenerator overhead is exported provided with regenerated flue gas F8, catalyst
Thus the flue gas that burning process is produced discharges.The close phase section 1-2 bottoms of regenerator are provided with main wind F3（It is used for the air burnt）Enter
Mouthful, for providing the fluidizing agent burnt with air and action catalysts into regenerator；The close phase section 1-2 of regenerator, which is additionally provided with, to be treated
Raw catalyst inlet, the reclaimable catalyst sent from the bottom of circulating fluid bed reactor 2 hence into the close phase section 1-2 of regenerator,
Inversely contact and burnt with main wind.Regenerator gas vapor carries the positive bottom that section 1-3 is arranged on close phase section, is coupling in close phase section
Together, and communicate therewith, put forward section so that the catalyst after regenerating directly flows into gas vapor from the close phase section of regenerator, being arranged such can
To simplify regenerator configuration and catalyst flow path, investment reduction, the operation stability and applicability that improve device regenerator；Regeneration
Device gas vapor carries pars infrasegmentalis and carries gas entrance provided with gas vapor, and gas vapor drawings inert gas, including water are provided to the catalyst after regeneration
Steam, nitrogen and helium.If to regenerative agent without particular/special requirement, regenerated catalyst is carried without gas vapor.Regenerator gas vapor is carried
Section 1-3 bottoms provided with regenerative agent export, the outlet can by regenerative agent lifting inclined tube 5 and regenerator sloped tube 4 respectively with recycle stream
The close phase section 2-2 of fluidized bed reactor 2 is connected with the bottom of riser reactor 3, respectively to circulating fluid bed reactor 2 and lifting
Pipe reactor 3 provides regenerated catalyst.Regenerative agent lifting inclined tube 5 is provided with valve V4, is transported to cut off or adjust from regenerator 1
The regenerated catalyst internal circulating load of dense bed reactor 2；Regenerative agent lifting inclined tube 5 bottom lifts wind F7 entrances provided with regenerative agent,
Regenerated catalyst can be transported in the close phase section 2-2 of recirculating fluidized bed with fluidized state；Regenerator sloped tube 4 is provided with valve V2,
The regenerated catalyst internal circulating load of riser reactor 3 is transported to cut off or adjust regenerator 1, regenerated catalyst is oblique in regeneration
In pipe 4 in the way of dense packing slip-stream to the bottom of riser reactor 3.
Circulating fluid bed reactor 2 is followed successively by the close phase section 2- of recirculating fluidized bed settling section 2-1, recirculating fluidized bed from top to bottom
2 and recirculating fluidized bed gas vapor carry and being mutually communicated between a section 2-3, and three sections.The close phase section 2-2 of recirculating fluidized bed is raw material and catalysis
The catalytic place of agent；Regenerated catalyst inlet is provided with, lift inclined tube 5 by regenerative agent is connected with regenerator 2, regenerates
Catalyst afterwards constantly lifts inclined tube 5 by regenerative agent and enters the close phase section 2-2 of recirculating fluidized bed；The close phase section 2-2 of recirculating fluidized bed
Bottom be provided with reaction raw materials import, thereto provide catalytic reaction required for raw material.Recirculating fluidized bed settling section 2-1 is anti-
Product and solid catalyst split site are answered, its top is provided with reacting product outlet, risen from the close phase section 2-2 of recirculating fluidized bed
Gas vapor carries gas and carries a small amount of catalyst with reaction product, and gas solid separation is carried out herein, and reaction product is settled from recirculating fluidized bed
Flowed out at the top of section 2-1, solid catalyst is dropped downward into the close phase section 2-2 of recirculating fluidized bed.Recirculating fluidized bed gas vapor carries a section 2-3
That the gas vapor of catalyst for having participated in reaction carries place, be arranged on the close phase section 2-2 of recirculating fluidized bed underface and with above and below it
The catalyst of reaction has been participated in insertion, the close phase section 2-2 of recirculating fluidized bed can be downwardly directly into recirculating fluidized bed gas vapor and carry
In section 2-3, the flow path of catalyst is simplified, it is ensured that the stability of catalyst flowing；Recirculating fluidized bed gas vapor carries a section 2-
3 bottom carries gas entrance provided with gas vapor, and gas vapor, which carries gas and inversely contacts progress gas vapor with reacted catalyst, carries gas, described
Gas vapor carry gas for water vapour, nitrogen or helium；Gas vapor carry after catalyst（That is reclaimable catalyst）Lifted by spent agent
Inclined tube 6 is transported in the close phase section 1-2 of regenerator and carries out coke burning regeneration；Valve V3 is provided with spent agent lifting inclined tube 6, to cut
The close phase section 1-2 of regenerator reclaimable catalyst internal circulating load is sent in disconnected or adjustment from the bottom of circulating fluid bed reactor 2；Spent agent is carried
Rise inclined tube 6 bottom and lift wind F6 entrances provided with spent agent, reclaimable catalyst with fluidized state can be transported to regenerator close
In phase section 1-2.
Riser reactor 3 is coupled by horizontal conveying pipe 7 with recirculating fluidized bed settling section 2-1, horizontal feed
The effect of pipe 7 is that the catalyst from riser reactor 3 and the mixture of reaction product are introduced into recirculating fluidized bed settling section
In 2-1, and carrying out catalyst and reaction product separation wherein, the settling section for eliminating riser reactor is gentle/stripping section,
Device flow and structure are simplified, plant investment has been saved.Horizontal conveying pipe 7 is provided with valve V1, anti-for isolating riser
Answer device 3 and circulating fluid bed reactor 2.The bottom of riser reactor 3 is provided with regenerated catalyst inlet, passes through regenerator sloped tube 4
It is connected with the regenerative agent outlet of the bottom of regenerator 2, constantly provides regenerated catalyst to the bottom of riser reactor 3.
The specific implementation flow of apparatus of the present invention is as follows：
Embodiment 1：
The embodiment is the implementing procedure of recirculating fluidized bed process reaction-regeneration.
Valve V3 and V4 are opened, valve V1 and V2 are closed, by riser reactor 3 and isolation of system, by recirculating fluidized bed
Reactor 2, regenerator 1, spent agent lifting inclined tube 6 and regenerative agent lifting inclined tube 5 constitute recirculating fluidized bed reaction-regenerative device.
It is close from the charging aperture positioned at the close phase section 2-2 bottoms of recirculating fluidized bed into recirculating fluidized bed that recirculating fluidized bed feeds F1
Phase section, and catalyst haptoreaction therein, and make catalyst that fluidized state is presented；It is upward that gas-phase product carries a small amount of catalyst
Into recirculating fluidized bed settling section 2-1, gas solid separation is carried out；Gas phase（That is reaction product F9）At the top of from recirculating fluidized bed settling section
Outflow, piece-rate system is reclaimed into product；Reacted catalyst flows downwardly into circulating fluid bed reactor gas vapor and carries a section 2-3
In, the recirculating fluidized bed gas vapor entered with the pars infrasegmentalis carries gas F5 and inversely contacts carry out air lift, the reaction product that gas vapor is proposed
The close phase section 2-2 of recirculating fluidized bed is upward through together with carrying gas with gas vapor into recirculating fluidized bed settling section 2-1, with reaction product
After merging reactor is left at the top of reactor settling section；Reclaimable catalyst after gas vapor is carried lifts wind F6 work in spent agent
Under, enter along spent agent lifting inclined tube 6 in the close phase section 1-2 of regenerator, the internal circulating load of spent agent is controlled by valve V3 aperture
System.
Into the close phase section 1-2 of regenerator spent agent, the main wind F3 entered with the close phase pars infrasegmentalis of regenerator is inversely contacted, and
Burnt in the presence of F3 in fluidized state, burn a small amount of catalyst of flue gas carrying and be upwardly into regenerator settling section 1-1
In, after gas solid separation, burn flue gas F8 and go out device at the top of regenerator settling section, the catalyst isolated returns to regenerator
In close phase section 1-2；Regenerator gas vapor is flowed downwardly into by the regenerated catalyst burnt and carries a section 1-3, is entered again with the pars infrasegmentalis
Anger/stripping gas F4 inversely contacts progress gas vapor and carried.Regenerated catalyst after gas vapor is carried lifts wind F7 effect in regenerative agent
Under, in lifting the close phase section 2-2 that inclined tube 5 returns to circulating fluid bed reactor along regenerative agent, the internal circulating load of regenerated catalyst
It can be controlled by V4 aperture.
So far, recirculating fluidized bed experiment is completed from the overall process for being reacted to regeneration.
Embodiment 2：
The embodiment is the implementing procedure of riser process reaction-regeneration.
Valve V1, V2 and V3 are opened, valve V4 is closed, by riser reactor 3, circulating fluid bed reactor 2, regenerator
1st, regenerator sloped tube 4 and spent agent lifting inclined tube 6 constitute riser reaction-regenerative device.
The regenerated catalyst flowed out from the bottom of regenerator 1, after controlling flow through valve V2, enters along regenerator sloped tube 4 and is lifted
The bottom of pipe reactor 3, riser feeds F2 and enters lifting tube reaction from riser reactor bottom with vaporific or gas phase
In device 3, with catalyst haptoreaction, reacting gas is with catalyst in fluidized state cocurrent up at the top of riser reactor
Afterwards, enter recirculating fluidized bed settling section 2-1 along horizontal conveying pipe 7, carry out gas solid separation；Gas phase（That is reaction product F9）From circulation
Left at the top of fluidized-bed reactor, piece-rate system is reclaimed into product；It is close that the catalyst isolated flows downwardly through recirculating fluidized bed
Phase section 2-2, is carried in section 2-3 into circulating fluid bed reactor gas vapor, and the recirculating fluidized bed gas vapor entered with the pars infrasegmentalis is carried
Gas F5 inversely contacts progress gas vapor and carried, the product that gas vapor is proposed with gas vapor carry gas together be upwardly into recirculating fluidized bed sedimentation
Section 2-1；Flowed out after merging with reaction product at the top of circulating fluid bed reactor；Gas vapor carry after reclaimable catalyst to be generated
Enter in the presence of agent lifting wind F6 along spent agent lifting inclined tube 6 in the close phase section 1-2 of regenerator, the internal circulating load of spent agent is by valve
V3 aperture is controlled.
Into the close phase section 1-2 of regenerator spent agent, the main wind F3 entered with the close phase pars infrasegmentalis of regenerator inversely contact into
Row fluidisation is burnt, and is burnt a small amount of catalyst of flue gas carrying and is upwardly into regenerator settling section 1-1, after gas solid separation, burns cigarette
Gas F8 goes out device from regenerator overhead, and the catalyst isolated is returned in the close phase section 1-2 of regenerator；By the regeneration burnt
Catalyst flows downwardly into regenerator gas vapor and carries a section 1-3, and the regeneration gas/stripping gas F4 entered with the pars infrasegmentalis inversely contacts progress
Gas vapor is carried.Regenerated catalyst after gas vapor is carried returns to riser reactor bottom along regenerator sloped tube 4.
So far, riser experiment is completed from the overall process for being reacted to regeneration.
Claims (9)
1. a kind of device of riser coupling cycle fluidized-bed reactor common regenerator, including regenerator（1）, recirculating fluidized bed
Reactor（2）, riser reactor（3）, horizontal conveying pipe（7）And regenerator sloped tube（4）, the regenerator include regenerator sedimentation
Section（1-1）With the close phase section of regenerator (1-2), the circulating fluid bed reactor includes recirculating fluidized bed settling section（2-1）With follow
The close phase section of ring fluid bed（2-2）, the riser reactor coupled by horizontal conveying pipe with recirculating fluidized bed settling section, and it is special
Levy and be：Also include regenerative agent lifting inclined tube (5) and spent agent lifting inclined tube (6), in the close phase section of the regenerator of the regenerator
Bottom is communicated with regenerator gas vapor and puies forward section (1-3), and the circulating fluid bed reactor in the circulating fluid bed reactor bottom is close
Phase section is communicated with recirculating fluidized bed gas vapor and puies forward section (2-3), and the bottom of the riser reactor passes through the regenerator sloped tube and position
The regenerative agent outlet for carrying section bottom in regenerator gas vapor is connected, and top is reacted by the horizontal conveying pipe and recirculating fluidized bed
Device settling section is connected；The close phase section of recirculating fluidized bed lifts the regenerative agent that inclined tube carries section bottom with regenerator gas vapor by regenerative agent
Outlet is connected, and the spent agent outlet that recirculating fluidized bed gas vapor carries section bottom lifts inclined tube and the close phase section of regenerator by spent agent
It is connected.
2. the device of riser coupling cycle circulating fluid bed reactor common regenerator according to claim 1, it is special
Levy and be：In the horizontal conveying pipe（7）It is provided with valve（V1）, regenerator sloped tube（4）It is provided with valve（V2）, spent agent lifting
Inclined tube（6）It is provided with valve（V3）, regenerative agent lifting inclined tube（5）Provided with valve (V4).
3. the device of riser coupling cycle circulating fluid bed reactor common regenerator according to claim 1, it is special
Levy and be：The raw device gas vapor carries the positive bottom that section (1-3) is located at the close phase section of regenerator (1-2), with its up/down perforation.
4. the device of riser coupling cycle circulating fluid bed reactor common regenerator according to claim 1, it is special
Levy and be：The recirculating fluidized bed gas vapor puies forward section (2-3) positioned at the close phase section of recirculating fluidized bed（2-2）Positive bottom, and thereon
Lower insertion.
5. the device of riser coupling cycle circulating fluid bed reactor common regenerator according to claim 1 or 2, its
It is characterised by：Inclined tube is lifted in the regenerative agent（5）With regenerative agent outlet connection wind is lifted provided with regenerative agent（F7）Entrance.
6. the device of riser coupling cycle circulating fluid bed reactor common regenerator according to claim 1 or 2, its
It is characterised by：Inclined tube is lifted in the spent agent（6）With spent agent outlet connection wind is lifted provided with spent agent（F6）Entrance.
7. a kind of device for the riser coupling cycle circulating fluid bed reactor common regenerator realized described in claim 1
Application method, it is characterised in that：Comprise the following steps：
（1）Operated by recirculating fluidized bed reaction-regenerative device
Valve on a, cut-out horizontal conveying pipe and regenerator sloped tube, is opened on regenerative agent lifting inclined tube and spent agent lifting inclined tube
Valve；
It is anti-that b, regenerated catalyst carry out gas-solid fluidization with the recirculating fluidized bed charging entered from the close phase pars infrasegmentalis of recirculating fluidized bed
Should；
C, reacted catalyst flow downwardly into recirculating fluidized bed gas vapor and put forward section, and the fluid bed of pars infrasegmentalis entrance is carried with gas vapor
Gas vapor puies forward the circulation of vital energy in the wrong direction and carried to contact progress gas vapor；
D, the reclaimable catalyst carried by gas vapor flow out from the catalyst outlet of fluid bed stripping section bottom, in spent agent lifting
Enter the close phase section of regenerator along spent agent lifting inclined tube under wind action, it is reverse with the main wind that enters from the close phase pars infrasegmentalis of regenerator
Contact carries out coke burning regeneration；
E, burn after regenerated catalyst flow downwardly into regenerator gas vapor and put forward section, with proposing pars infrasegmentalis entrance from regenerator gas vapor
Gas vapor carry the circulation of vital energy in the wrong direction to contact gas vapor carry after, from device gas vapor again carry section bottom outlet outflow, regenerative agent lifted wind action
It is lower to enter the close phase section of circulating fluid bed reactor along regenerative agent lifting inclined tube（2）Operated by riser reaction-regenerative device；
Valve on a, cut-out regenerative agent lifting inclined tube, is opened on horizontal conveying pipe, regenerator sloped tube and spent agent lifting inclined tube
Valve；
B, the regenerated catalyst for proposing from regenerator gas vapor the catalyst outlet outflow of section bottom, flow into riser anti-along regenerator sloped tube
Device bottom is answered, is contacted with the riser charging entered from riser reactor bottom, to fluidize state cocurrent up to carrying
After at the top of riser reactors, enter recirculating fluidized bed settling section along horizontal conveying pipe and carry out gas solid separation；
C, gas phase are left at the top of circulating fluid bed reactor, and piece-rate system is reclaimed into product；
D, the catalyst isolated flow downwardly through the close phase section of recirculating fluidized bed, into circulating fluid bed reactor gas vapor/vapour/vapour/
In stripping section, put forward the circulation of vital energy in the wrong direction with the recirculating fluidized bed gas vapor entered from the pars infrasegmentalis and carried to progress gas vapor is contacted；
E, the reclaimable catalyst carried by gas vapor flow out from the catalyst outlet of fluid bed stripping section bottom, in spent agent lifting
Enter the close phase section of regenerator along spent agent lifting inclined tube under wind action, it is reverse with the main wind that enters from the close phase pars infrasegmentalis of regenerator
Contact carries out coke burning regeneration；
F, burn after regenerated catalyst flow downwardly into regenerator gas vapor and put forward section, with proposing pars infrasegmentalis entrance from regenerator gas vapor
Gas（Vapour）Carry the circulation of vital energy in the wrong direction to contact gas vapor carry after, from device gas vapor again carry section bottom outlet outflow, along regenerator sloped tube flow to lifted
Pipe reactor.
8. the use of the device of riser coupling cycle circulating fluid bed reactor common regenerator according to claim 8
Method, it is characterised in that：Described lifting wind is water vapour, air, nitrogen or hydrogen.
9. the use of the device of riser coupling cycle circulating fluid bed reactor common regenerator according to claim 8
Method, it is characterised in that：Described gas vapor carries gas for water vapour, nitrogen or helium.
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| CN111944558A (en) * | 2020-08-23 | 2020-11-17 | 浙江工业大学 | Reaction regeneration circulating device system in catalytic cracking |
| CN114950282A (en) * | 2022-06-24 | 2022-08-30 | 洛阳融惠化工科技有限公司 | Fluidized bed capable of inhibiting coking of feeding system and strengthening reaction process and use method thereof |
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| CN107224942B (en) | 2023-07-04 |
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