CN104415798A - Catalyst regeneration method and regenerator - Google Patents
Catalyst regeneration method and regenerator Download PDFInfo
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- CN104415798A CN104415798A CN201310403606.5A CN201310403606A CN104415798A CN 104415798 A CN104415798 A CN 104415798A CN 201310403606 A CN201310403606 A CN 201310403606A CN 104415798 A CN104415798 A CN 104415798A
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- agent
- regenerator
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- distributor
- fluid bed
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Abstract
The invention provides a catalyst regeneration method, belonging to the technical field of petrochemical engineering and fluidization and aiming to improve the burning efficiency of a fluidized bed regenerator. The catalyst regeneration method comprises spent catalyst feeding, main air feeding, fluidized bed burning and regenerating agent discharging, and is characterized in that a turbulent flow bed is in reverse contact to be burnt; a spent catalyst passes through the distributor to enter from the upper part of a fluidized bed and is distributed; a regenerating agent is led out from the central position of the lower part of the fluidized bed; and heating is set so that the temperature of the regenerating agent is lowered and the agent-oil ratio of the device is improved. According to the method, the burning time of the spent catalyst in the fluidized bed can be consistent, the carbon content of the regenerating agent is consistent, the activity of the regenerating agent is consistent, the temperature of the regenerating agent is lowered and the agent-oil ratio of the device is improved. The invention further provides regenerator which can be used for realizing the method and is composed of a central leading-out pipe, a regenerating agent conveying pipe, a spent catalyst feeding pipe and a spent catalyst lifting pipe. The catalyst regeneration method is applied to catalytic cracking and methanol-to-olefin device regenerators.
Description
Technical field
The invention belongs to petrochemical industry, fluidization technology field, particularly a kind of catalyst recovery process and regenerator.
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 catalyst recovery process and regenerator, 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 distributes, regenerative agent is drawn from fluid bed lower central position, and arranges heat-obtaining reduction regenerative agent temperature raising device oil ratio.
Realize a regenerator for described inventive method, comprise regenerator housing, fluid bed, regenerative agent carrier pipe, distributor pipe of cardinal wind, spent agent feed pipe, spent agent riser, spent agent distributor and regenerative agent center fairlead, heat removing tube.
Further, spent agent distributor, on fluid bed top, is tubular type or slot type.
Further, spent agent feed pipe directly stretches into from regenerator side to be connected with spent agent distributor; Or be connected with spent agent distributor through spent agent riser, spent agent riser is through center fairlead and enters regenerator or enter regenerator separately.
Further, arrange regenerative agent center fairlead in fluid bed lower central position, fairlead bottom, center is connected with regenerative agent carrier pipe, and arranges heat removing tube at center fairlead; Center 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 stretches into fairlead inside, center or stretch into center fairlead from the side inner from bottom.
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 distributes, and regenerative agent is drawn from fluid bed lower central position, 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 catalyst recovery process and regenerator 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-center fairlead, 8-regenerative agent carrier pipe.
Fig. 2 is another kind of catalyst recovery process and regenerator 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-center fairlead, 8-regenerative agent carrier pipe.
Fig. 3 is another kind of catalyst recovery process and regenerator schematic diagram.
In figure: 1-regenerator, 2-spent agent distributor, 4-distributor pipe of cardinal wind, 5-spent agent feed pipe, 6-heat removing tube, 7-center fairlead, 8-regenerative agent carrier pipe.
Detailed description of the invention
See Fig. 1, Fig. 2, distributor pipe of cardinal wind 4 is arranged at regenerator 1 bottom, and center fairlead 7 stretches into from regenerator 1 bottom centre is bottom-up, and its underpart is connected with regenerative agent carrier pipe 8, and heat removing tube 6 is bottom-up stretches into center fairlead 7.Spent agent riser 3 is bottom-up stretches into regenerator 1 through center fairlead 7, and its upper end is connected with spent agent distributor 2, and lower end is connected with spent agent feed pipe 5.Fig. 2 spent agent riser 3 directly stretches into regenerator 1.
See Fig. 3, distributor pipe of cardinal wind 4 is arranged at regenerator 1 bottom, and center fairlead 7 stretches into from regenerator 1 bottom centre is bottom-up, and its underpart is connected with regenerative agent carrier pipe 8, and heat removing tube 6 is bottom-up stretches into center fairlead 7.Spent agent feed pipe 5 stretches into regenerator 1 and is connected with spent agent distributor 2.
See Fig. 1, Fig. 2, spent agent enters spent agent riser 3 through spent agent feed pipe 5, is promoted in regenerator 1, then is distributed in fluid bed top through spent agent distributor 2.Feed main air at distributor pipe of cardinal wind 4, carry out adverse current and burn, regenerated catalyst enters from center fairlead 7 is suitable for reading, flow downward with fluidization form, in heat removing tube, feed deaerated water, deaerated water vaporization heat removal makes regenerative agent reduce temperature, then discharges through regenerative agent carrier pipe 8.
See Fig. 3, spent agent enters through spent agent feed pipe 5 in the spent agent distributor 2 in regenerator 1, and is distributed in fluid bed top.Feed main air at distributor pipe of cardinal wind 4, carry out adverse current and burn, regenerated catalyst enters from center fairlead 7 is suitable for reading, flow downward with fluidization form, in heat removing tube, feed deaerated water, deaerated water vaporization heat removal makes regenerative agent reduce temperature, then discharges through regenerative agent carrier pipe 8.
Claims (7)
1. a catalyst recovery 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 distributes, regenerative agent is drawn from fluid bed lower central position, and arranges heat-obtaining reduction regenerative agent temperature raising device oil ratio.
2. realize a regenerator for inventive method described in claim 1, comprise regenerator housing, fluid bed, regenerative agent carrier pipe, distributor pipe of cardinal wind, spent agent feed pipe, spent agent riser, spent agent distributor and regenerative agent center fairlead, heat removing tube.
3. regenerator according to claim 2, is characterized in that: spent agent distributor, on fluid bed top, is tubular type or slot type.
4. regenerator according to claim 2, is characterized in that: spent agent feed pipe directly stretches into from regenerator side to be connected with spent agent distributor; Or be connected with spent agent distributor through spent agent riser, spent agent riser is through center fairlead and enters regenerator or enter regenerator separately.
5. regenerator according to claim 2, is characterized in that: arrange regenerative agent center fairlead in fluid bed lower central position, and fairlead bottom, center is connected with regenerative agent carrier pipe, and arranges heat removing tube at center fairlead; Center 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.
6. regenerator according to claim 2, is characterized in that: heat removing tube is single form or band bobbin carriage form, and heat removing tube stretches into fairlead inside, center or stretch into center fairlead from the side inner from bottom.
7. regenerator 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 |
|---|---|---|---|
| CN201310403606.5A CN104415798A (en) | 2013-09-09 | 2013-09-09 | Catalyst regeneration method and regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310403606.5A CN104415798A (en) | 2013-09-09 | 2013-09-09 | Catalyst regeneration method and regenerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104415798A true CN104415798A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310403606.5A Pending CN104415798A (en) | 2013-09-09 | 2013-09-09 | Catalyst regeneration method and regenerator |
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| CN (1) | CN104415798A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108698040A (en) * | 2016-03-31 | 2018-10-23 | 环球油品公司 | FCC counter-current regeneration devices |
-
2013
- 2013-09-09 CN CN201310403606.5A patent/CN104415798A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108698040A (en) * | 2016-03-31 | 2018-10-23 | 环球油品公司 | FCC counter-current regeneration devices |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |