CN102380333A - Agent-unloading device system for methanol-to-olefin reactor of fluidized bed - Google Patents
Agent-unloading device system for methanol-to-olefin reactor of fluidized bed Download PDFInfo
- Publication number
- CN102380333A CN102380333A CN2011103745968A CN201110374596A CN102380333A CN 102380333 A CN102380333 A CN 102380333A CN 2011103745968 A CN2011103745968 A CN 2011103745968A CN 201110374596 A CN201110374596 A CN 201110374596A CN 102380333 A CN102380333 A CN 102380333A
- Authority
- CN
- China
- Prior art keywords
- agent
- reactor
- pipeline
- unloads
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses an agent-unloading device system for a methanol-to-olefin reactor of a fluidized bed, which comprises a fluidized bed reaction device. The fluidized bed reaction device comprises a fluidized bed reactor, a feeding pipeline and a catalyst regenerative circulating system which is connected to the fluidized bed reactor; the bottom of the fluidized bed reactor is connected to a catalyst storage tank through an agent-unloading pipeline; and an agent-unloading valve is arranged on the agent-unloading pipeline. With the help of the agent-unloading device system, a catalyst unloading problem of a methanol-to-olefin process bed reactor for the fluidized bed is solved, a catalyst is completely unloaded in an MTO (Methanol To Olefin) production process, an overhauling speed for equipment during the production process is efficiently promoted, the production cost is lowered, and production requirements for FMTP (Fluidized-bed Methanol To Propylene), MTO and other bed reactors of the fluidized bed are met.
Description
?
Technical field
The present invention relates to fluid bed methanol to olefins reaction device and unload the agent apparatus system.
Background technology
Fluid bed is the common technology of petrochemical industry catalytic cracking (FCC) device, generally is divided into two kinds: promote tubular reactor and bed formula reactor.In the methanol-to-olefins (MTO) of domestic and international up-to-date exploitation in recent years, preparing propylene from methanol state-of-the-art technologies such as (MTP), a lot of process using fluidized-bed process are arranged.The loading, unloading of fluid bed reactor catalysis agent are the most important condition and the key operation points of such explained hereafter.Because it is relatively large that catalyst accounts for production cost, especially MTO and MTP technology, the catalyst of such technology has very high technology content, and catalyst costs an arm and a leg.So, how to reduce catalyst loss and reclaim the prerequisite that catalyst is the operation of fluid bed process units.Drawing off and reclaiming of downtime catalyst is particularly important, unloads the control of agent operation and guarantees that catalyst unloads the key that is full of the downtime considered.
More than several kinds of technology generally adopts is to unload the operation of agent on stop work burning up limit when unloading agent of device.Main operation is to utilize catalyst fluidisation circulation in system, and catalyst in reactor is transferred to regenerator, lets catalyst holomorphosis through regeneration main air fluidisation with burning, and unload the agent line through regenerator bottoms and unload to the catalyst storage tank this moment.For riser reactor, the catalyst in reactor reserve is few, and catalyst can be circulated to stripper fully through promoting steam, gets into regenerator then more smoothly, and catalyst can unload to the greatest extent basically.
Accompanying drawing 1 is typical petrochemical industry catalytic cracking unit; Can find out among the figure that regenerator is much larger than reactor (riser) volume; Regenerator is used for the carbon and a small amount of hydro carbons crackate of the assembly of combustion catalyst through the oxygen in the main air; Completion is burnt and is produced a large amount of reaction heat, accomplishes circulation through the inclined tube catalyst, transmits heat.(catalyst circulation shown in the arrow, is accomplished transfer of heat in figure) heat is enough when unloading agent, and regenerator unloads the agent line, has guaranteed the drawing off fully of catalyst (when temperature hang down, catalyst was difficult for fluidisation and draws off).
And bed reactor; Particularly FMTP, MTO etc. adopt the technology of double-reactor, and catalyst flows through too much group guiding valve and two reactor cycles, and two reactor volumes are all big than regenerator; Catalyst inventory is many, and catalyst is difficult to catalyst is unloaded to the greatest extent through regenerator.Still have a large amount of catalyst to draw off in the shut-down post-reactor, these catalyst account for 5-10% of system's general reserve.Catalyst buildup is difficult to reclaim at reactor bottom, and a lot of reactors are provided with internals, complex structure, dismounting difficulty.Bulk deposition adds the Yu Wengao after equipment is stopped work in device bottom, and personnel get into cleaning and maintenance difficulty.So, be that cleaning is reclaimed and overhaul of the equipments brings difficulty on the one hand, the labor cleaning possibly cause the pollution and the destruction of catalyst on the other hand, and production cost improves.
Summary of the invention
The invention solves because reactor does not have the independent agent line that unloads, and the reactor volume space of device is relatively large, after the shut-down, still accumulate a large amount of catalyst in the reactor and the maintenance progress that has a strong impact on, the production cost problem of higher that cause.
Fluid bed methanol to olefins reaction device of the present invention unloads the agent apparatus system; Comprise fluidized bed reaction; Said fluidized bed reaction comprises fluidized-bed reactor, feeding line and the catalyst regeneration circulatory system that is connected with fluidized-bed reactor; The bottom of said fluidized-bed reactor is connected to the catalyst storage tank through unloading the agent pipeline, and the said agent pipeline that unloads is provided with and unloads the agent valve.
Said fluidized bed reaction is connected with auxiliary heat riser through pipeline, and said auxiliary heat riser is mainly formed by being connected same auxiliary combustion chamber and the blower fan on the pipeline.
The outlet place of said auxiliary combustion chamber is provided with the emptying by-pass.
The said agent pipeline that unloads that unloads between agent valve and the fluidized-bed reactor is provided with restriction orifice fluidization steam vapor pipeline and purges steam pipeline.
The said agent pipeline that unloads is provided with two groups and unloads the agent valve, and two groups are unloaded unloading between the agent valve and are connected with air on the agent pipeline and carry air pipe line.
The invention solves the catalyst unloading problem of fluid bed methanol-to-olefins technology bed reactor; Can guarantee drawing off fully of catalyst in the MTO explained hereafter; Effectively improved the maintenance progress of equipment in producing; Reduce production cost, satisfied the explained hereafter demand of fluid bed FMTP, MTO and other bed reactors.
Description of drawings
Fig. 1 is a petrochemical industry fluid catalytic cracking FCC general flow apparatus system sketch;
Fig. 2 is a flow path device system schematic of the present invention.
1,2, reactor among the figure:; 3, catalyst storage tank; 4, feeding line; 5, carry wind; 6 steam; 7, unload the agent pipeline; 8, stop valve; 9, restriction orifice; 10, check valve; 11, Pressure gauge; 12, auxiliary combustion chamber; 13, blower fan; 14, emptying by-pass.
The specific embodiment
Fluid bed methanol to olefins reaction device of the present invention unloads the agent apparatus system; Comprise fluidized bed reaction, fluidized bed reaction comprises fluidized-bed reactor 1 and 2, feeding line 4 and the catalyst regeneration circulatory system that is connected with fluidized-bed reactor, like Fig. 2; The catalyst regeneration circulatory system comprises regenerator, stripper, inclined tube etc.; The bottom of fluidized-bed reactor is connected to catalyst storage tank 3 through unloading agent pipeline 7, unload agent pipeline 7 and be provided with two groups and unload the agent valve, and two groups is unloaded unloading between the agent valve and is connected with air on the agent pipeline and carries air pipe line 5; Confirm that pipeline is unimpeded before being used to unload agent; Unload the agent line and be connected to the catalyst storage tank, increase in appropriate location, pipeline middle part and carry wind, catalyst flows smoothly when unloading agent with assurance; Unloading unloading between agent valve and the fluidized-bed reactor is equipped with restriction orifice fluidization steam vapor pipeline and purges steam pipeline on the agent pipeline; The former opens when switching steam in system; Keep fluidisation, stop the obstruction that possibly cause to avoid catalyst, the latter in case of emergency; As when finding that this unloads situation such as agent point obstruction, conveniently in time handle.Restriction orifice fluidization steam vapor pipeline comprises stop valve 8, restriction orifice 9 and check valve 10, and the pipeline that purges steam comprises Pressure gauge and stop valve; Simultaneously, fluidized bed reaction is connected with auxiliary heat riser through pipeline, and auxiliary heat riser is mainly formed with blower fan 13 by being connected same the auxiliary combustion chamber 12 on the pipeline, and the outlet place of auxiliary combustion chamber 12 is provided with emptying by-pass 14.
After the methanol-to-olefins device was stopped work, feeding line 4 stop valves cut out, and unload agent and undertaken by normal running early stage.Catalyst is promoted to stripper by reactor through riser, gets into regenerator burning up limit then and unloads agent.When reserve in regenerator and the reactor shows minimum and does not descend for a long time; When the catalyst material level of storage tank was confirmed not go up, the regenerator catalyst unloaded to the greatest extent basically in the illustrative system, and residual catalyst can't draw off through circulation in the reactor; At this moment; Reactor keeps 6 steam fluidisations, and steam flow is reduced to minimum, to guarantee the catalyst minimum fluidization velocity.After components such as the inner hydro carbons of steam displacement catalyst, methyl alcohol, after notification analysis sampling reactor gaseous component is qualified, open the blower fan of reactor, with blower fan emptying by-pass control blower pressure, the igniting of reactor auxiliary combustion chamber.When the furnace temperature outlet temperature rose to more than 200 ℃, reactor switched hot-air fluidisation 4 (this line is material or the common import of hot-air), still kept reaction-regeneration system fluidisation recurrent state this moment.When catalyst accomplish burn with moisture evaporation after, after parameters such as sample analysis catalyst moisture and carbon distribution are qualified, prepare to carry out reactor and unload agent and operate.
Confirm that unloading the agent line keeps shut near the reactor-side stop valve, open one stop valve in back, open to purge between two groups of valves and carry wind 5, it is unimpeded to confirm to unload the agent line, confirms unimpeded back shut-down purge valve.Close restriction orifice 9 steam stop valves 8 (this valve generally stays open, and closes when unloading agent, so that unload agent); First road of slowly opening the proximal response device unloads the agent valve; The agent line of starting discharging is slightly carried air-valve 5, controls reactor pressure well, and catalyst storage tank 3 suitably vacuumizes; Observe the catalyst material level of storage tank and change, control the agent speed of unloading well.When catalyst storing invariant position, explain that reactor catalyst unloads to the greatest extent basically.Production technology has two reactors 1,2, should draw off respectively, operates and design same as described above.After unloading the agent completion, close and unload the agent valve and unload agent line conveying air-valve.Stop auxiliary combustion chamber and blower fan.
Claims (5)
1. fluid bed methanol to olefins reaction device unloads the agent apparatus system; Comprise fluidized bed reaction; Said fluidized bed reaction comprises fluidized-bed reactor, feeding line and the catalyst regeneration circulatory system that is connected with fluidized-bed reactor; It is characterized in that: the bottom of said fluidized-bed reactor is connected to the catalyst storage tank through unloading the agent pipeline, and the said agent pipeline that unloads is provided with and unloads the agent valve.
2. reactor as claimed in claim 1 unloads the agent apparatus system, it is characterized in that: said fluidized bed reaction is connected with auxiliary heat riser through pipeline, and said auxiliary heat riser is mainly formed by being connected same auxiliary combustion chamber and the blower fan on the pipeline.
3. reactor as claimed in claim 2 unloads the agent apparatus system, it is characterized in that: the outlet place of said auxiliary combustion chamber is provided with the emptying by-pass.
4. reactor as claimed in claim 1 unloads the agent apparatus system, it is characterized in that: the said agent pipeline that unloads that unloads between agent valve and the fluidized-bed reactor is provided with restriction orifice fluidization steam vapor pipeline and purges steam pipeline.
5. unload the agent apparatus system like each described reactor among the claim 1-4, it is characterized in that: the said agent pipeline that unloads is provided with two groups and unloads the agent valve, and two groups are unloaded unloading between the agent valve and are connected with air on the agent pipeline and carry air pipe line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103745968A CN102380333A (en) | 2011-11-23 | 2011-11-23 | Agent-unloading device system for methanol-to-olefin reactor of fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103745968A CN102380333A (en) | 2011-11-23 | 2011-11-23 | Agent-unloading device system for methanol-to-olefin reactor of fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102380333A true CN102380333A (en) | 2012-03-21 |
Family
ID=45820407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103745968A Pending CN102380333A (en) | 2011-11-23 | 2011-11-23 | Agent-unloading device system for methanol-to-olefin reactor of fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102380333A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107021360A (en) * | 2017-03-16 | 2017-08-08 | 神华集团有限责任公司 | Catalyst device for discharging and the methanol-to-olefins device with it |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962573A (en) * | 2006-12-01 | 2007-05-16 | 中国化学工程集团公司 | Method and reactor for catalytic cracking for producing propylene using fluid bed |
| CN202315857U (en) * | 2011-11-23 | 2012-07-11 | 安徽淮化股份有限公司 | Catalyst-unloading device system of fluidized bed methanol-to-olefin reactor |
-
2011
- 2011-11-23 CN CN2011103745968A patent/CN102380333A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962573A (en) * | 2006-12-01 | 2007-05-16 | 中国化学工程集团公司 | Method and reactor for catalytic cracking for producing propylene using fluid bed |
| CN202315857U (en) * | 2011-11-23 | 2012-07-11 | 安徽淮化股份有限公司 | Catalyst-unloading device system of fluidized bed methanol-to-olefin reactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107021360A (en) * | 2017-03-16 | 2017-08-08 | 神华集团有限责任公司 | Catalyst device for discharging and the methanol-to-olefins device with it |
| CN107021360B (en) * | 2017-03-16 | 2019-11-29 | 神华集团有限责任公司 | Catalyst device for discharging and methanol-to-olefins device with it |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202315857U (en) | Catalyst-unloading device system of fluidized bed methanol-to-olefin reactor | |
| CN105018129B (en) | Device and method for producing gasoline from methyl alcohol by fluidized bed | |
| JP2000288410A (en) | Stepwise catalyst regeneration in fluidized bed with baffle | |
| JP2007530740A (en) | System and method for injecting catalyst and / or additive into a fluid catalytic cracking unit | |
| JPH05123587A (en) | Method and device for heat exchanging solid particles for regeneration in catalytic cracking | |
| CN102049217B (en) | On-line filling device and method for catalyst | |
| US20160060542A1 (en) | Fluidized bed unit startup | |
| CN103193574A (en) | On-stream method of methanol to light olefin reaction-regeneration device | |
| CN102276394B (en) | Method of stopping for unloading when cutting reactor-regeneration system in process of preparing olefins from methanol | |
| CN102380333A (en) | Agent-unloading device system for methanol-to-olefin reactor of fluidized bed | |
| US2526701A (en) | Catalytic conversion of hydrocarbons | |
| US5242012A (en) | Apparatus and process for cooling fluid solid particles | |
| RU186090U1 (en) | REACTIVITY-REGENERATION REFORMING BLOCK | |
| CN102584515B (en) | Stopping method for reaction and regeneration system of preparing olefin by methanol | |
| CN102276392A (en) | Starting method of reaction device for preparing low-carbon olefin by use of methanol | |
| KR101982786B1 (en) | Fluidized bed reactor | |
| CN102295503A (en) | Reaction-regeneration device for preparing low-carbon olefin from methanol | |
| CN202315855U (en) | Fluidized bed methanol-to-olefins feeding device system | |
| CN102950031B (en) | Method and equipment for quickly stabilizing activity of catalytic cracking catalyst | |
| CN205886900U (en) | Regeneration system of desulfurization adsorbent | |
| CN202509005U (en) | Level paralleling reaction and regeneration equipment for producing olefin by methanol | |
| CN202506377U (en) | High-low paralleling methanol-to-olefins reaction-reproduction system | |
| CN202315856U (en) | Fluidized bed methanol to olefins (MTO) reactor oven heating device system | |
| CN106563498B (en) | A kind of method and device that methanol-to-olefin catalyst fine powder recycles | |
| CN217829495U (en) | Acrylonitrile production product storage tank exhaust treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120321 |