CN203999437U - Fluidized-bed preparing propylene from methanol reaction-regeneration system - Google Patents
Fluidized-bed preparing propylene from methanol reaction-regeneration system Download PDFInfo
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- CN203999437U CN203999437U CN201420345419.6U CN201420345419U CN203999437U CN 203999437 U CN203999437 U CN 203999437U CN 201420345419 U CN201420345419 U CN 201420345419U CN 203999437 U CN203999437 U CN 203999437U
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- revivifier
- reactor
- catalyzer
- stripper
- ebtp
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- 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
Abstract
The utility model discloses a kind of fluidized-bed preparing propylene from methanol reaction-regeneration system, the side entrance of MTO reactor is connected to EBTP reactor by inclined tube, the side entrance of EBTP reactor is connected to revivifier by inclined tube, the top of EBTP reactor is connected to stripper by pipeline, the outlet at bottom of stripper is connected to the side entrance of revivifier, the bottom of MTO reactor is connected to stripper by riser tube, the sidepiece of revivifier is connected with upflow tube, the inlet end of upflow tube is provided with external warmer, and the bottom of revivifier is provided with auxiliary chamber.The utility model adopts regenerator flue gas blowdown system to increase bypass, when the improper race of catalyzer is damaged, separating catalyst is introduced to the hot tank of catalyzer, in the time that adding agent and fluctuation, catalyzer can effectively reduce catalyzer, simultaneously, the mode such as auxiliary chamber, increase pressure regulator valve that adopts external warmer, regenerator bottoms, can reduce revivifier inner catalyst and damage along with flue gas runs.
Description
Technical field
the utility model relates to fluidized-bed preparing propylene from methanol reaction-regeneration system.
Background technology
Fluidized-bed preparing propylene from methanol (FMTP) technology belongs to forward position core technology of coal chemical technology, and fluidized-bed preparing propylene from methanol (FMTP) technological principle comprises two principal reactions, is respectively methanol-to-olefins (MTO) reaction; Ethene, fourth amylene propylene processed (EBTP) reaction, device is mainly made up of reaction-regeneration system, chilling compression system, absorbing-stabilizing system and propylene separation system four parts, reaction-regeneration system is fluidized-bed preparing propylene from methanol (FMTP) technological core device, be that emphasis is again difficult point, methyl alcohol transforms into propylene at reaction-regeneration system, and catalyzer is mainly at reaction-regeneration system internal recycle.
Reaction-regeneration system major equipment: MTO reactor, EBTP reactor, revivifier and stripper etc.Methanol steam enters MTO reactor from MTO bottom, and after contacting with the FMTP catalyzer in fluidized, reaction generates low carbon olefin gas and enters stripper.The effect of MTO reactor is that methyl alcohol is transformed into the low-carbon (LC) hydrocarbon gas as leading taking propylene and ethene.Ethylene butene mixed gas from separate part enters from EBTP reactor bottom, and interior after fluid catalyst contacts with reactor, the low carbon olefin gas of generation enters stripper.The effect of EBTP reactor is that ethene and butylene are transformed into propylene through the katalysis of catalyzer.Taking propylene with ethene as main low-carbon olefin mixed gas is after cyclonic separator separates, leave from stripper top, enter separation system below.
It is 80 μ m-100 μ m that reaction-regeneration system uses catalyzer mean diameter, flow at four device internal recycle, in order to reduce the back-mixing of catalyzer, fluidized-bed is arranged to bilayer, utilize wide aperture grid distributor to realize, ridged member is set with the bubble in broken fluidized catalyst in reactor, increases gas-solid mass transfer, revivifier is established external warmer.Microspheres with solid catalyzer from revivifier enters from BETP reactor middle part, after inside reactor stays for some time, leaves enter MTO reactor from bottom.The decaying catalyst flowing out from MTO reactor bottom is raised pipe and is transported to stripper, and the power of course of conveying is to be provided by the steam of riser tube bottom, and the riser reactor of lifting process and FCC device is similar.The Main Function of stripper is to utilize steam that the hydro carbons being adsorbed in catalyzer duct is cemented out.Enter secondary cyclone with EBTP reactor head low-carbon olefin mixed gas out from MTO reactor together with the low-carbon olefin mixed gas cementing out stripper, the catalyst fines of carrying secretly in gas in cyclonic separator is separated, and flows into revivifier regenerate through the catalyzer of gas from stripper bottom.
Due to the catalyzer cost compare costliness of this device, it is to reduce as far as possible that the race of catalyzer is damaged, one of catalyst stack less predominating path is to be run and damaged by revivifier chimney, reason is in the following areas: 1, due to fluidized-bed preparing propylene from methanol (FMTP) technology, easily produce when catalyzer adds agent and run and damage when worker operates.2, the fluidized-bed preparing propylene from methanol production cycle relatively long, technique adjustment is during this time frequent, easily causes fluidized-bed layer fluctuation, causes revivifier catalyzer chimney to run and damages.
Summary of the invention
The fluidized-bed preparing propylene from methanol reaction-regeneration system that provides a kind of race that can effectively lower catalyzer in reactive system to damage is provided the purpose of this utility model.
Fluidized-bed preparing propylene from methanol reaction-regeneration system of the present utility model, comprise MTO reactor, EBTP reactor, stripper and revivifier, the side entrance of described MTO reactor is connected to the outlet at bottom of EBTP reactor by inclined tube, the side entrance of described EBTP reactor is connected to the outlet at bottom of revivifier by inclined tube, the top of described EBTP reactor is connected to stripper by pipeline, the outlet at bottom of described stripper is connected to the side entrance of revivifier, the bottom of described MTO reactor is connected to stripper by riser tube, the sidepiece of described revivifier is connected with upflow tube, the inlet end of described upflow tube is provided with external warmer, the bottom of described revivifier is provided with auxiliary chamber.
The top of described revivifier is connected with fume emission pipeline, and described fume emission pipeline is provided with double slide valve.
Described fume emission pipeline is connected to the hot tank of catalyzer.
The regeneration system rapidly of catalyzer comprises the auxiliary chamber of revivifier, external warmer and regenerator bottoms, and external warmer is used for removing the waste heat of partial regeneration device, and auxiliary chamber is used for providing extra heat in driving and revivifier.Regeneration (compression) air passes into revivifier from regenerator bottoms.Regeneration temperature control is 670 DEG C-730 DEG C.The frequent fluctuation of gaseous feed causes the variation stream of the gentle speed of system pressure, cause that fluidized-bed layer disturbance increases catalyst stack less, and adopt airing system to increase pressure regulator valve, and ensure airing system pressure-stabilisation, can reduce revivifier inner catalyst and damage along with flue gas runs.
Fluidized-bed preparing propylene from methanol of the present utility model (FMTP) reaction-regeneration system adopts regenerator flue gas blowdown system to increase bypass, when the improper race of catalyzer is damaged, separating catalyst is introduced to the hot tank of catalyzer, in the time that adding agent and fluctuation, catalyzer can effectively reduce catalyzer, simultaneously, adopt the mode such as auxiliary chamber, increase pressure regulator valve of external warmer, adjustment regenerator bottoms, ensure airing system pressure-stabilisation, can reduce revivifier inner catalyst and damage along with flue gas runs.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, MTO reactor; 2, EBTP reactor; 3, revivifier; 4, stripper; 5, inclined tube; 6, fume emission pipeline; 7, the hot tank of catalyzer; 8, riser tube; 9, upflow tube; 10, external warmer; 11, auxiliary chamber.
Embodiment
As shown in Figure 1, fluidized-bed preparing propylene from methanol reaction-regeneration system of the present utility model, comprise MTO reactor 1, EBTP reactor 2, stripper 4 and revivifier 3, the side entrance of MTO reactor 1 is connected to the outlet at bottom of EBTP reactor 2 by inclined tube, the side entrance of EBTP reactor 2 is connected to the outlet at bottom of revivifier 3 by inclined tube, the top of EBTP reactor 2 is connected to stripper 4 by pipeline, the outlet at bottom of stripper 4 is connected to the side entrance of revivifier 3, the bottom of MTO reactor 1 is connected to stripper 4 by riser tube 8, the sidepiece of revivifier 3 is connected with upflow tube 9, the inlet end of upflow tube 9 is provided with external warmer 10, the bottom of revivifier 3 is provided with auxiliary chamber 11, the bottom of external warmer 9 connects pressurized air intake line, the top of revivifier 3 is connected with fume emission pipeline 6, and described fume emission pipeline is provided with double slide valve, and fume emission pipeline 6 is connected to the hot tank 7 of catalyzer.
Fluidized-bed preparing propylene from methanol of the present utility model (FMTP) reaction-regeneration system adopts regenerator flue gas blowdown system to increase bypass, when the improper race of catalyzer is damaged, separating catalyst is introduced to the hot tank of catalyzer, in the time that adding agent and fluctuation, catalyzer can effectively reduce catalyzer, simultaneously, adopt the mode such as auxiliary chamber, increase pressure regulator valve of external warmer, regenerator bottoms, ensure airing system pressure-stabilisation, can reduce revivifier inner catalyst and damage along with flue gas runs.
Claims (3)
1. fluidized-bed preparing propylene from methanol reaction-regeneration system, comprise MTO reactor (1), EBTP reactor (2), stripper (4) and revivifier (3), it is characterized in that, the side entrance of described MTO reactor (1) is connected to the outlet at bottom of EBTP reactor (2) by inclined tube, the side entrance of described EBTP reactor (2) is connected to the outlet at bottom of revivifier (3) by inclined tube, the top of described EBTP reactor (2) is connected to stripper (4) by pipeline, the outlet at bottom of described stripper (4) is connected to the side entrance of revivifier (3), the bottom of described MTO reactor (1) is connected to stripper (4) by riser tube (8), the sidepiece of described revivifier (3) is connected with upflow tube (9), the inlet end of described upflow tube (9) is provided with external warmer (10), the bottom of described revivifier (3) is provided with auxiliary chamber (11).
2. fluidized-bed preparing propylene from methanol reaction-regeneration system as claimed in claim 1, is characterized in that, the top of described revivifier (3) is connected with fume emission pipeline (6).
3. fluidized-bed preparing propylene from methanol reaction-regeneration system as claimed in claim 2, is characterized in that, described fume emission pipeline (6) is connected to the hot tank of catalyzer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345419.6U CN203999437U (en) | 2014-06-26 | 2014-06-26 | Fluidized-bed preparing propylene from methanol reaction-regeneration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345419.6U CN203999437U (en) | 2014-06-26 | 2014-06-26 | Fluidized-bed preparing propylene from methanol reaction-regeneration system |
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| CN203999437U true CN203999437U (en) | 2014-12-10 |
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| CN201420345419.6U Expired - Fee Related CN203999437U (en) | 2014-06-26 | 2014-06-26 | Fluidized-bed preparing propylene from methanol reaction-regeneration system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672041A (en) * | 2015-02-12 | 2015-06-03 | 中国天辰工程有限公司 | Fluidized bed methanol to propylene (FMTP) combination device arranged at different heights |
| CN104667836A (en) * | 2015-02-12 | 2015-06-03 | 中国天辰工程有限公司 | Fluidized bed methanol to olefin combined device in equal-height arrangement |
| CN104710260A (en) * | 2015-02-12 | 2015-06-17 | 中国天辰工程有限公司 | Coaxially arranged fluidized bed methanol-to-propylene combined device |
| CN105413759A (en) * | 2015-12-27 | 2016-03-23 | 安徽淮化股份有限公司 | Method and apparatus for reducing catalyst loss in fluidized bed methanol-to-propylene regeneration system |
-
2014
- 2014-06-26 CN CN201420345419.6U patent/CN203999437U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672041A (en) * | 2015-02-12 | 2015-06-03 | 中国天辰工程有限公司 | Fluidized bed methanol to propylene (FMTP) combination device arranged at different heights |
| CN104667836A (en) * | 2015-02-12 | 2015-06-03 | 中国天辰工程有限公司 | Fluidized bed methanol to olefin combined device in equal-height arrangement |
| CN104710260A (en) * | 2015-02-12 | 2015-06-17 | 中国天辰工程有限公司 | Coaxially arranged fluidized bed methanol-to-propylene combined device |
| CN104710260B (en) * | 2015-02-12 | 2016-06-01 | 中国天辰工程有限公司 | A kind of coaxially arranged fluidized-bed preparing propylene from methanol combination unit |
| CN105413759A (en) * | 2015-12-27 | 2016-03-23 | 安徽淮化股份有限公司 | Method and apparatus for reducing catalyst loss in fluidized bed methanol-to-propylene regeneration system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |