CN203944364U - A kind of high operating flexibility dense-phase fluidized bed regenerator - Google Patents
A kind of high operating flexibility dense-phase fluidized bed regenerator Download PDFInfo
- Publication number
- CN203944364U CN203944364U CN201420364198.7U CN201420364198U CN203944364U CN 203944364 U CN203944364 U CN 203944364U CN 201420364198 U CN201420364198 U CN 201420364198U CN 203944364 U CN203944364 U CN 203944364U
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- dense
- distributor
- fluidized bed
- phase fluidized
- bed
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Abstract
A kind of high operating flexibility dense-phase fluidized bed regenerator, belongs to petrochemical industry, fluidizing apparatus technical field, runs the catalyst problem of damaging for solving while resuming production after little, the vexed bed of dense-phase fluidized bed gas distributor operating flexibility.Comprise regenerator dense-phase fluidized bed, main air import, cyclone separator, dipleg, flutter valve, it is characterized in that: at regenerator dense-phase fluidized bed, 2 layers of gas distributor are set, lower floor's gas distributor is arranged on dense bed bottom, and top tank air distributor is arranged on 0～1 meter of flutter valve below; Top tank air distributor is that all standing fluid bed form or part cover fluid bed form, is single structure or multi-branched.Can increase substantially gas distributor of fludized bed operating flexibility, can prevent that vexed bed operation recovery from running and damaging catalyst while production.For catalytic cracking unit (FCCU), methanol-to-olefins device (MTO) etc.
Description
Technical field
The utility model belongs to petrochemical industry, fluidizing apparatus technical field, particularly a kind of high operating flexibility dense-phase fluidized bed regenerator.
Background technology
Fluid bed regenerator gas distributor is arranged on fluid bed bottom, conventionally adopts distribution grid or distributor pipe.Distributor pipe by being responsible for, arm, branched pipe and nozzle form, supervisor is the larger standpipe of diameter, lower end is connected upper end and is connected with 2～4 arms with air intlet, every arm is connected with the branched pipe of tens of minor diameters again, branched pipe is installed some nozzles down.In catalytic cracking unit production, Air for burning coke (abbreviation main air) enters regenerator through auxiliary combustion chamber, main air upwards flows into arm along supervisor, enter tens of branched pipes again and spray downwards through nozzle, then upset is upwards flowed and is entered fluid bed through branched pipe gap.Distribution grid is on metallic plate, to offer diameter 10～50mm circular hole, and gas enters bed by circular hole from bottom to top.Conventional distribution grid or distributor pipe deficiency are that operating flexibility is less, fluid bed requires distributor to have a constant pressure drop (being generally 0.005～0.015MPa), if gas load increases considerably, distributor pressure drop also increases considerably, may limit gas flow and not reach maximum load, or gas system pressure drop excessive and increase energy consumption; If gas load significantly reduces, distributor pressure drop also significantly reduce fluid bed can not normal operating.
Break down reaction-regeneration system can not operate time at catalytic cracking unit, and dense-phase fluidized bed regenerator is often waited for vexed bed form, is fed main air again and resume production after plant failure is got rid of.A lot of industrial catalyticing cracking devices feed when main air resumes production, run into dense-phase fluidized bed fluidisation undesired, run and damage a catalyst difficult problem.
Summary of the invention
The purpose of this utility model is to provide a kind of high operating flexibility dense-phase fluidized bed regenerator, can increase substantially gas distributor of fludized bed operating flexibility, can prevent that vexed bed operation recovery from running and damaging catalyst while production.
The utility model solves the technical scheme that its technical problem adopts: comprise regenerator dense-phase fluidized bed, main air import, cyclone separator, dipleg, flutter valve, it is characterized in that: at regenerator dense-phase fluidized bed, 2 layers of gas distributor are set, lower floor's gas distributor is arranged on dense bed bottom, and top tank air distributor is arranged on 0～1 meter of flutter valve below; Top tank air distributor is that all standing fluid bed form or part cover fluid bed form, is single structure or multi-branched.
Further, top tank air distributor is dendroid or ring shape or arc distributor pipe, and distributor pipe arranges nozzle down or tiltedly.
Further, grid can also be set below flutter valve, combine layout with top tank air distributor.
The utility model innovative point and good effect:
The utility model innovative point is: at regenerator dense-phase fluidized bed, 2 layers of gas distributor are set, lower floor's gas distributor is arranged on dense bed bottom, and top tank air distributor is arranged on 0～1 meter of flutter valve below; Top tank air distributor is that all standing fluid bed form or part cover fluid bed form, is single structure or multi-branched.
The utility model good effect is: 1, top tank air distributor designs becomes all standing fluid bed form, increases substantially gas distributor of fludized bed operating flexibility by 2 layers of distributor compounding practice.2, top tank air distributor designs one-tenth part covers fluid bed form (covering flutter valve below fluidized bed region), improves flutter valve working environment, runs the catalyst problem of damaging while solving vexed bed operation recovery production.
Brief description of the drawings
Fig. 1 is a kind of high operating flexibility dense-phase fluidized bed regenerator schematic diagram.
1-flutter valve, 2-grid, distributor pipe supervisor under 3-, distributor pipe import under 4-, 5-regenerator dense-phase fluidized bed, the upper distributor pipe arm of 6-, the upper distributor pipe inlet tube of 7-, the upper distributor pipe nozzle of 8-, distributor pipe arm under 9-, distributor pipe branched pipe under 10-, distributor pipe nozzle under 11-.
Fig. 2 is another kind of high operating flexibility dense-phase fluidized bed regenerator schematic diagram.
1-flutter valve, distributor pipe supervisor under 3-, distributor pipe import under 4-, 5-regenerator dense-phase fluidized bed, the upper distributor pipe arm of 6-, the upper distributor pipe inlet tube of 7-, the upper distributor pipe nozzle of 8-, distributor pipe arm under 9-, distributor pipe branched pipe under 10-, distributor pipe nozzle under 11-.
Detailed description of the invention
See Fig. 1, block form device regenerator, top tank air distributor is all standing fluid bed form, for improving gas distributor of fludized bed operating flexibility.4 lower distributor pipe arms 9 are cross and are arranged in regenerator dense-phase fluidized bed 5 bottoms, and its center is responsible for 3 upper ends with lower distributor pipe and is connected, and lower distributor pipe is responsible for 3 lower ends and is connected with lower distributor pipe import 4.Several lower distributor pipe branched pipes 10 are connected with lower distributor pipe arm 9, and the tiltedly lower direction of lower distributor pipe branched pipe 10 is installed lower distributor pipe nozzle 11.Flutter valve 1 is placed in position, regenerator dense-phase fluidized bed 5 bottoms (apart from 91.5～2 meters of lower distributor pipe arms), below flutter valve 1,0～1 meter of arranges grid 2 and top tank air distributor, and top tank air distributor designs becomes 2～4 structures, all standing fluid bed form and combines layout with grid 2.Upper distributor pipe inlet tube 7 stretches into regenerator dense-phase fluidized bed 5 inside and is connected with several upper distributor pipe arms 6, and upper distributor pipe arm 6 is installed distributor pipe nozzle 8 down.
See Fig. 2, coaxial-type device regenerator, top tank air distributor only covers flutter valve below fluidized bed region, runs and damages catalyst for improving when flutter valve working environment solves vexed bed operation recovery production.2 lower distributor pipe arms 9 linearly or piecewise dam axis in regenerator dense-phase fluidized bed 5 bottoms, in the middle of it, being responsible for 3 upper ends with lower distributor pipe is connected, lower distributor pipe is responsible for 3 lower ends and is connected with lower distributor pipe import 4, several lower distributor pipe branched pipes 10 are connected with lower distributor pipe arm 9, and the tiltedly lower direction of lower distributor pipe branched pipe 10 is installed lower distributor pipe nozzle 11.Flutter valve 1 is placed in position, regenerator dense-phase fluidized bed 5 bottoms (apart from 91.5～2 meters of lower distributor pipe arms), thereunder 0～1 meter of arranges top tank air distributor, top tank air distributor designs becomes multi-branched, only covers flutter valve below fluidized bed region, upper distributor pipe inlet tube 7 stretches into regenerator dense-phase fluidized bed 5 inside and is connected with upper distributor pipe arm 6, and upper distributor pipe arm 6 is installed distributor pipe nozzle 8 down.
Referring to Fig. 1, normal duty operating mode main air enters from lower distributor pipe import 4, enter regenerator dense-phase fluidized bed 5 bottoms through lower distributor pipe supervisor 3, lower distributor pipe arm 9, lower distributor pipe branched pipe 10 and lower distributor pipe nozzle 11, then upset is upwards flowed and is entered fluid bed through lower distributor pipe arm 9 gaps, and normal duty operating mode top tank air distributor cuts out.High load capacity operating mode is enabled top tank air distributor, another part main air enters from upper distributor pipe inlet tube 7, enter regenerator dense-phase fluidized bed 5 bottoms through upper distributor pipe arm 6 and upper distributor pipe nozzle 8, while making the pressure drop of high load capacity operating mode distributor with normal duty, equate or close.Have the device of underload requirement normal duty operating condition design can be become upper and lower two-layer distributor to come into operation, the top tank air distributor of stopping using in the time of underload, equates while making the pressure drop of running on the lower load distributor with normal duty or close simultaneously.
Referring to Fig. 2, normal operating main air enters from lower distributor pipe import 4, enter regenerator dense-phase fluidized bed 5 bottoms through lower distributor pipe supervisor 3, lower distributor pipe arm 9, lower distributor pipe branched pipe 10 and lower distributor pipe nozzle 11, then upset is upwards flowed and is entered fluid bed through lower distributor pipe arm 9 gaps, and normal operating state top tank air distributor cuts out.When plant failure reaction-regeneration system can not operate, main air stops entering regenerator, and the vexed bed of regenerator is in wait state.After getting rid of, plant failure resumes production, first enable top tank air distributor, main air or supercharging wind are fed to upper distributor pipe inlet tube 7, enter interior flutter valve 1 lower zone of regenerator dense-phase fluidized bed 5 through upper distributor pipe arm 6, upper distributor pipe nozzle 8, improve working environment and make flutter valve 1 normal operating.Again main air is fed to lower distributor pipe import 4, enter regenerator dense-phase fluidized bed 5 bottoms through lower distributor pipe supervisor 3, lower distributor pipe arm 9, lower distributor pipe branched pipe 10 and some lower distributor pipe nozzles 11, after the regenerator that resumes production completely enters normal operating state, close top tank air distributor.Improve working environment owing to first enabling top tank air distributor, therefore make flutter valve 1 normal operating prevent catalyst stack less.
Claims (3)
1. one kind high operating flexibility dense-phase fluidized bed regenerator, comprise regenerator dense-phase fluidized bed, main air import, cyclone separator, dipleg, flutter valve, it is characterized in that: at regenerator dense-phase fluidized bed, 2 layers of gas distributor are set, lower floor's gas distributor is arranged on dense bed bottom, and top tank air distributor is arranged on 0～1 meter of flutter valve below; Top tank air distributor is that all standing fluid bed form or part cover fluid bed form, is single structure or multi-branched.
2. high operating flexibility dense-phase fluidized bed regenerator according to claim 1, is characterized in that: top tank air distributor is dendroid or ring shape or arc distributor pipe, and distributor pipe arranges nozzle down or tiltedly.
3. high operating flexibility dense-phase fluidized bed regenerator according to claim 1, is characterized in that: grid can also be set below flutter valve, combine layout with top tank air distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364198.7U CN203944364U (en) | 2014-07-03 | 2014-07-03 | A kind of high operating flexibility dense-phase fluidized bed regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364198.7U CN203944364U (en) | 2014-07-03 | 2014-07-03 | A kind of high operating flexibility dense-phase fluidized bed regenerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203944364U true CN203944364U (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364198.7U Expired - Fee Related CN203944364U (en) | 2014-07-03 | 2014-07-03 | A kind of high operating flexibility dense-phase fluidized bed regenerator |
Country Status (1)
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| CN (1) | CN203944364U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108025275A (en) * | 2015-09-29 | 2018-05-11 | 陶氏环球技术有限责任公司 | A kind of fluidisation fuel gas device system for catalytic dehydrogenation processes |
| US11009229B2 (en) | 2016-02-29 | 2021-05-18 | Uop Llc | Method for fluidizing spent catalyst |
-
2014
- 2014-07-03 CN CN201420364198.7U patent/CN203944364U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108025275A (en) * | 2015-09-29 | 2018-05-11 | 陶氏环球技术有限责任公司 | A kind of fluidisation fuel gas device system for catalytic dehydrogenation processes |
| CN108025275B (en) * | 2015-09-29 | 2021-10-15 | 陶氏环球技术有限责任公司 | Fluidized fuel gas burner system for catalytic dehydrogenation process |
| US11009229B2 (en) | 2016-02-29 | 2021-05-18 | Uop Llc | Method for fluidizing spent catalyst |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20160703 |