CN104549564A - Efficient fluidized bed regeneration method and devices - Google Patents
Efficient fluidized bed regeneration method and devices Download PDFInfo
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- CN104549564A CN104549564A CN201310477137.1A CN201310477137A CN104549564A CN 104549564 A CN104549564 A CN 104549564A CN 201310477137 A CN201310477137 A CN 201310477137A CN 104549564 A CN104549564 A CN 104549564A
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Abstract
The invention relates to an efficient fluidized bed regeneration method and belongs to the technical field of petroleum chemical industry and fluidization. The efficient fluidized bed regeneration method is used for improving the scorching efficiency of a fluidized bed regenerator. The efficient fluidized bed regeneration method comprises the following steps: feeding a spent catalyst, feeding main air, scorching by a fluidized bed and discharging a regenerated catalyst, and is characterized in that a turbulent bed is adopted for countercurrent contact and scorching, the spent catalyst enters from the upper part of the fluidized bed and is uniformly distributed by a distributor, the regenerated catalyst is led out of the lower part of the fluidized bed from 1-4 symmetrical positions, and heat taking is set to reduce the temperature of the regenerated catalyst and improve the catalyst-oil ratio of the device. Through the adoption of the method, the consistent scorching time of the spent catalyst in the fluidized bed, the consistent carbon content in the regenerated catalyst and the consistent activity of the regenerated catalyst can be realized, the temperature of the regenerated catalyst is reduced, and the catalyst-oil ratio of the device is improved. The invention further provides devices, namely a regenerated catalyst leading-out pipe, a regenerated catalyst collection pipe, a regenerated catalyst conveying pipe, a spent catalyst feeding pipe and a spent catalyst lifting pipe for realizing the method provided by the invention. The method and the devices are applied to the regenerators for catalytic cracking, devices for producing olefins from methanol and the like.
Description
Technical field
The invention belongs to petrochemical industry, fluidization technology field, particularly a kind of effective fluidized bed renovation process and equipment.
Background technology
Existing block form catalytic cracking unit spent agent enters fluid bed from the side, and most device does not have spent agent distributor (minority device is provided with simple and easy distributor), and regenerative agent is all from regenerator side or a certain quadrant extraction from bottom.Thisly to enter, lead-out mode causes spent agent in fluid bed burning process inhomogeneities.Thisly unevenly cause following problem: the catalyst char length had is long, and regenerative agent carbon containing is just low, and regenerative agent is active just high; And some catalyst char length are short, regenerative agent carbon containing is just high, and regenerative agent is active just low.Then reaction selectivity and conversion ratio is directly affected after above-mentioned catalyst enters reactor.Therefore by spent agent in fluid bed top distributed uniform, and make spent agent consistent at fluid bed char length, make regenerative agent carbon containing consistent, regenerative agent is active consistent, is the target that regenerator and fluid bed are pursued.
Summary of the invention
The object of this invention is to provide a kind of effective fluidized bed renovation process, can realize spent agent consistent at fluid bed char length, regenerative agent carbon containing is consistent, the active consistent target of regenerative agent.
The present invention solves the method that its technical problem adopts: comprise that spent agent enters, main air feeds, fluid bed burns, regenerative agent is discharged, it is characterized in that: adopt turbulent bed counter current contacting to burn, spent agent to enter on fluid bed top through distributor and is uniformly distributed, regenerative agent 1 ~ 4 from fluid bed bottom symmetric position is drawn, and arranges heat-obtaining reduction regenerative agent temperature raising device oil ratio.
Realize an equipment for described inventive method, comprise regenerator housing, fluid bed, distributor pipe of cardinal wind, regenerative agent fairlead, regenerative agent concetrated pipe, regenerative agent carrier pipe, heat removing tube, spent agent feed pipe, spent agent riser, spent agent distributor.
Further, spent agent distributor is located at fluid bed top, and spent agent feed pipe reaches regenerator lower central position and is connected with spent agent riser bottom, and spent agent riser lower end is connected with regenerator bottoms housing, and upper end is connected with spent agent distributor; Be symmetrical arranged 1 ~ 4 root regeneration agent fairlead in regenerator bottom, regenerative agent fairlead bottom is stretched out outside regenerator and is connected with regenerative agent carrier pipe through regenerative agent concetrated pipe, arranges heat removing tube at regenerative agent fairlead or regenerative agent concetrated pipe inside.
Further, regenerative agent fairlead is straight tube structure or variable-diameter structure, and upper end arranges horn mouth or do not arrange, and bottom arranges or do not arrange fluidizing agent distributor.
Further, heat removing tube is single form or band bobbin carriage form, and heat removing tube is from bottom or stretch into regenerative agent fairlead or regenerative agent concetrated pipe from the side.
Further, spent agent distributor is tubular type or slot type.
Further, grid is set in fluid bed or does not arrange.
Innovative point of the present invention and good effect:
Innovative point of the present invention is: adopt turbulent bed counter current contacting to burn, and spent agent to enter on fluid bed top through distributor and is uniformly distributed, and regenerative agent 1 ~ 4 from fluid bed bottom symmetric position is drawn, and arranges heat-obtaining and reduce regenerative agent temperature and improve device oil ratio.
Good effect of the present invention is: can realize spent agent consistent at fluid bed char length, and regenerative agent carbon containing is consistent, and regenerative agent is active consistent, and reduces regenerative agent temperature raising device oil ratio.
Accompanying drawing explanation
Fig. 1 is a kind of effective fluidized bed renovation process and equipment schematic diagram.
In figure: 1-regenerator, 2-spent agent distributor, 3-spent agent riser, 4-distributor pipe of cardinal wind, 5-spent agent feed pipe, 6-heat removing tube, 7-regenerative agent fairlead, 8-regenerative agent concetrated pipe, 9-regenerative agent carrier pipe.
Fig. 2 is another kind of effective fluidized bed renovation process and equipment schematic diagram.
In figure: 1-regenerator, 2-spent agent distributor, 3-spent agent riser, 4-distributor pipe of cardinal wind, 5-spent agent feed pipe, 6-heat removing tube, 7-regenerative agent fairlead, 8-regenerative agent concetrated pipe, 9-regenerative agent carrier pipe.
Detailed description of the invention
See Fig. 1, distributor pipe of cardinal wind 4 is arranged at regenerator 1 bottom, and 1 ~ 4 root regeneration agent fairlead 7 is bottom-up bottom regenerator 1 to be stretched into, and its underpart is connected with regenerative agent carrier pipe 9 through regenerative agent concetrated pipe 8, and heat removing tube 6 is bottom-up stretches into regenerative agent fairlead 7.Spent agent riser 3 lower end is connected with regenerator 1 bottom shell, and upper end is connected with spent agent distributor 2.Spent agent feed pipe 5 stretches into regenerator 1 and is connected with spent agent riser 3 bottom.
See Fig. 2, distributor pipe of cardinal wind 4 is arranged at regenerator 1 bottom, and 1 ~ 4 root regeneration agent fairlead 7 is bottom-up bottom regenerator 1 to be stretched into, and its underpart is connected with regenerative agent carrier pipe 9 through regenerative agent concetrated pipe 8, and heat removing tube 6 is bottom-up stretches into regenerative agent concetrated pipe 8.Spent agent riser 3 lower end is connected with regenerator 1 bottom shell, and upper end is connected with spent agent distributor 2.Spent agent feed pipe 5 stretches into regenerator 1 and is connected with spent agent riser 3 bottom.
See Fig. 1, spent agent enters spent agent riser 3 through spent agent feed pipe 5, is promoted to regenerator 1 top, then is distributed in fluid bed top through spent agent distributor 2.Main air is fed at distributor pipe of cardinal wind 4, carry out adverse current to burn, regenerated catalyst enters from regenerative agent fairlead 7 is suitable for reading, flow downward with fluidization form, deaerated water is fed in heat removing tube 6, deaerated water vaporization heat removal makes regenerative agent reduce temperature, then discharges through regenerative agent concetrated pipe 8, regenerative agent carrier pipe 9.
See Fig. 2, spent agent enters spent agent riser 3 through spent agent feed pipe 5, is promoted to regenerator 1 top, then is distributed in fluid bed top through spent agent distributor 2.Main air is fed at distributor pipe of cardinal wind 4, carry out adverse current to burn, regenerated catalyst enters from regenerative agent fairlead 7 is suitable for reading, regenerative agent concetrated pipe 8 is flowed downward to fluidization form, deaerated water is fed in heat removing tube 6, deaerated water vaporization heat removal makes regenerative agent reduce temperature, then discharges through regenerative agent carrier pipe 9.
Claims (7)
1. an effective fluidized bed renovation process, comprise that spent agent enters, main air feeds, fluid bed burns, regenerative agent is discharged, it is characterized in that: adopt turbulent bed counter current contacting to burn, spent agent to enter on fluid bed top through distributor and is uniformly distributed, regenerative agent 1 ~ 4 from fluid bed bottom symmetric position is drawn, and arranges heat-obtaining reduction regenerative agent temperature raising device oil ratio.
2. realize an equipment for inventive method described in claim 1, comprise regenerator housing, fluid bed, distributor pipe of cardinal wind, regenerative agent fairlead, regenerative agent concetrated pipe, regenerative agent carrier pipe, heat removing tube, spent agent feed pipe, spent agent riser, spent agent distributor.
3. equipment according to claim 2, it is characterized in that: spent agent distributor is located at fluid bed top, spent agent feed pipe reaches regenerator lower central position and is connected with spent agent riser bottom, spent agent riser lower end is connected with regenerator bottoms housing, and upper end is connected with spent agent distributor; Be symmetrical arranged 1 ~ 4 root regeneration agent fairlead in regenerator bottom, regenerative agent fairlead bottom is stretched out outside regenerator and is connected with regenerative agent carrier pipe through regenerative agent concetrated pipe, arranges heat removing tube at regenerative agent fairlead or regenerative agent concetrated pipe inside.
4. equipment according to claim 2, is characterized in that: regenerative agent fairlead is straight tube structure or variable-diameter structure, and upper end arranges horn mouth or do not arrange, and bottom arranges or do not arrange fluidizing agent distributor.
5. equipment according to claim 2, is characterized in that: heat removing tube is single form or band bobbin carriage form, and heat removing tube is from bottom or stretch into regenerative agent fairlead or regenerative agent concetrated pipe from the side.
6. equipment according to claim 2, is characterized in that: spent agent distributor is tubular type or slot type.
7. equipment according to claim 2, is characterized in that: arrange grid in fluid bed or do not arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310477137.1A CN104549564A (en) | 2013-10-14 | 2013-10-14 | Efficient fluidized bed regeneration method and devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310477137.1A CN104549564A (en) | 2013-10-14 | 2013-10-14 | Efficient fluidized bed regeneration method and devices |
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| Publication Number | Publication Date |
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| CN104549564A true CN104549564A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310477137.1A Pending CN104549564A (en) | 2013-10-14 | 2013-10-14 | Efficient fluidized bed regeneration method and devices |
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| CN (1) | CN104549564A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3932534A1 (en) | 2020-06-30 | 2022-01-05 | AURA Technologie GmbH | Method and device for recycling waste containing valuable metals |
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- 2013-10-14 CN CN201310477137.1A patent/CN104549564A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3932534A1 (en) | 2020-06-30 | 2022-01-05 | AURA Technologie GmbH | Method and device for recycling waste containing valuable metals |
| WO2022002748A1 (en) | 2020-06-30 | 2022-01-06 | Aura Technologie Gmbh | Method and device for recycling waste materials containing valuable metals |
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Application publication date: 20150429 |