CN1238105C - Quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact - Google Patents
Quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact Download PDFInfo
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- CN1238105C CN1238105C CN 200310117192 CN200310117192A CN1238105C CN 1238105 C CN1238105 C CN 1238105C CN 200310117192 CN200310117192 CN 200310117192 CN 200310117192 A CN200310117192 A CN 200310117192A CN 1238105 C CN1238105 C CN 1238105C
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- Prior art keywords
- gas
- reactor
- particle
- orifice plate
- granules
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- 239000002245 particle Substances 0.000 title claims description 51
- 239000007787 solid Substances 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005243 fluidization Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000004523 catalytic cracking Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract 6
- 239000012071 phase Substances 0.000 abstract 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 28
- 239000003054 catalyst Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000571 coke Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000004231 fluid catalytic cracking Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The present invention discloses a quick fluidized bed reactor capable of realizing the counterflow contact of granules and gas, which belongs to the technical field of a chemical reaction device. Hole plates regularly provided with holes in the reactor and a horizontal line are in certain angles, and the hole plates are arranged in the shape like a Chinese character 'zhi' or arranged in a horizontal slicing mode; the granules enter the reactor from a granule inlet at the upper part of the reactor; the gas enters the reactor from a gas inlet at the lower part of the reactor. The granules downwards move in an accumulation state on the hole plates; the gas penetrates through dense phase layers of the granules and upwards moves; simultaneously, the structures of the holes and the hole plates are matched to guarantee the favorable contact of a gas phase and a solid phase to realize the counterflow contact. The present invention overcomes the defect of strong following performance of gas movement of granules in the prior art and can still provide high driving force of mass transfer and heat transfer in the later period of reaction. The present invention can be used in various reactors such as catalytic cracking regenerators, etc.
Description
Technical field
The invention belongs to the chemical reaction equipment field, particularly a kind of quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact.
Background technology
The common gas and the reactor types of solid comprise several forms such as fixed bed, moving bed and fluid bed.The employed particle grain size of fixed bed and moving bed is usually greater than 1 millimeter.The employed particle of fluid bed is less, and its particle size range is between the 10-1000 micron.The inside diffusional resistance of small size particle significantly reduces, and makes fluid bed can adapt to such as coal combustion and the such fast reaction process of fluid catalytic cracking.In addition, smaller particles makes it to be taken out of by gas, and this catalytic reaction for powder handling and rapid deactivation also is favourable.But after grain diameter diminishes, particle is strengthened greatly for the followability of gas motion, thereby in existing fast fluidized bed reactor, particle and gas can only move along same direction and stream, can't provide higher mass transfer, heat transfer efficiency in the reaction later stage, this is very disadvantageous for requiring the pollutant processing of high conversion, catalytic cracked regenerated process.This patent has proposed a kind of fast fluidization reactor of the counter-current flow that the particle agglomeration mechanism of action realizes particle and gas that utilizes and has overcome this difficulty.
Summary of the invention
The objective of the invention is to propose a kind of quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact, utilize the particle principle that apparent density increases under stacking states, drag coefficient reduces to realize the non-motion in the same way of particle and gas; It is characterized in that: gas enters reactor 1 from the gas access 2 of the bottom of reactor, moves upward after evenly distributing by distributor 3; Particle from the particle on reactor top inlet 4 enter reactor 1 inner and along with horizontal line at an angle the orifice plate 5 placed of " it " font move downward, have hole 6 on the orifice plate 5 regularly, aperture 6 cooperates orifice plate 5 to make particle to fall from hole 6 and can only move downward by downflow weir 7 simultaneously; Control particle flux valve 10 forms the granulation mass lamination of certain altitude during operation on orifice plate 5; Have hole 6 on the orifice plate 5 regularly, gas moves upward by hole 6; Gas contacts on orifice plate 5 with particle and reacts; Gas-solid two-phase mixture on the orifice plate 5 operates in fast fluidized condition to reach the good contact between the gas-solid; In reactor 1, or be with orifice plate 5 big, mesopore 6 to be horizontal positioned, cooperate big or middle hole 6, make particle from hole 6, fall; Thereby gas and particle have been realized counter-current flow at reactor 1.
On the described orifice plate diameter range in hole, hole at 1 millimeter to less than 38 millimeters with greater than 100 millimeters to 200 millimeters; Percent opening is 1% to less than between 30%.
The invention has the beneficial effects as follows to have overcome the defective that particle can't contact with back flow of gas in the existing fast fluidized bed reactor, utilize the counter-current flow of the stacking states realization gas-solid two-phase of particle; The structure of hole and orifice plate collocation simultaneously can guarantee the good contact of gas-solid two-phase again.
Description of drawings
Fig. 1 is the structural representation of the fast fluidized bed reactor that contacts with back flow of gas of the particle on carry potential overflow weir.
Fig. 2 is the aperture AND DEWATERING FOR ORIFICE STRUCTURE schematic diagram on carry potential overflow weir.
Fig. 3 is the structural representation of the fast fluidized bed reactor that contacts with back flow of gas of particle of band aperture plate.
Fig. 4 is band mesopore AND DEWATERING FOR ORIFICE STRUCTURE schematic diagram.
The structural representation of the fast fluidized bed reactor that the particle of the big orifice plate of Fig. 5 band contacts with back flow of gas.
Fig. 6 is for being band macropore AND DEWATERING FOR ORIFICE STRUCTURE schematic diagram.
Fig. 7 is the structural representation of the fast fluidized bed reactor that contacts with back flow of gas of particle as catalytic cracking regenerator.
The specific embodiment
The present invention is a kind of quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact.Utilize the particle principle that apparent density increases under stacking states, drag coefficient reduces to realize the non-motion in the same way of particle and gas; As shown in Figure 1, gas enters reactor 1 from the gas access 2 of the bottom of reactor, moves upward after evenly distributing by distributor 3; It is inner and move downward along orifice plate 5 that particle enters reactor 1 from the particle on reactor top inlet 4; Orifice plate 5 and horizontal line " it " font placement at an angle have hole 6 regularly on the orifice plate 5, aperture 6 cooperates orifice plates 5 to make particle to fall from hole 6 and can only move downward by downflow weir 7 (as shown in Figure 2) simultaneously; Control particle flux valve 10 forms the granulation mass lamination of certain altitude during operation on orifice plate 5; Gas moves upward by hole 6; Gas contacts on orifice plate 5 with particle and reacts; Gas-solid two-phase mixture on the orifice plate 5 operates in fast fluidized condition to reach the good contact between the gas-solid.Cooperate big, mesopore 6, this reactor has two kinds of structures (as Fig. 3, Fig. 4, Fig. 5, shown in Figure 6) in addition that band is big, the orifice plate 5 of mesopore 6 is horizontal positioned.Make particle fall from hole 6, thereby can also realize gas and the counter-current flow of particle in reactor 1, the diameter range in the hole 6 on the above-mentioned orifice plate 5 is between 1～200 millimeter; Percent opening is between 1%～40%.
Lift one of the Application Example application in catalytic cracking regenerator of this reactor below again, the present invention is further specified.The fast fluidized bed reactor that particle as shown in Figure 7 contacts with back flow of gas is as the enforcement schematic diagram of catalytic cracking regenerator, and the regenerative process of catalyst is the process that is deposited on the coke on the catalyst with the air burning-off.The reclaimable catalyst that is rich in coke enters reactor 1 from the reclaimable catalyst inlet 4 of regenerator 1; Air enters from the primary air inlet 2 of reactor 1; Contact on air and the regenerated catalyst orifice plate 5 and burn; The regenerated catalyst of all burnt leaves reactor 1 from regenerated catalyst outlet 9; The flue gas that burning generates leaves reactor 1 by exhanst gas outlet 8; This reactor can keep higher burning carbon intensity in the reaction later stage, makes that the regeneration of catalyst is more abundant; The inter-stage of regenerator also can be provided with external warmer 13 and secondary wind inlet 12 heat balances with the adjusting regenerator simultaneously; The form of reaction of high order also helps to reduce the discharging of nitride and sulfide.
Claims (2)
1. quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact, the top of described reactor (1) is provided with particle inlet (4) and gas vent (8), the middle part is fixed with the orifice plate (5) of regular perforate (6), and the bottom of reactor (1) is provided with gas access (2) and particle outlet (9); It is characterized in that: described orifice plate (5) is " it " font that intersects at the oblique angle with horizontal line in reactor (1) places, and orifice plate (5) is provided with downflow weir (7); Fixed gas distributor (3) on the gas access (2) of the bottom of reactor (1), gas access (2) locate to connect gas flow control valve (11), and particle flux control valve (10) connects particle outlet (9) and locates; Gas enters reactor (1) by gas access (2), moves upward after evenly distributing through distributor (3), and its flow is regulated by gas flow control valve (11); It is inner and move downward along " it " font orifice plate (5) that particle enters reactor (1) from the particle on reactor top inlet (4); Control particle flux valve (10) makes the granulation mass lamination that forms certain altitude on orifice plate during operation, moves downward by downflow weir (7); Gas contacts on orifice plate (5) with particle and reacts; Gas moves upward by hole (6); Gas passes back, hole (6) and goes up the dense-phase bed mode of operation that forms fast fluidization with particle at orifice plate (5), makes gas-solid two-phase mixture operate in fast fluidized condition to reach the good contact between the gas-solid; Gas and particle generally flow direction in reactor is opposite.
2. according to the described quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact of claim 1, it is characterized in that: on the described orifice plate diameter range in hole 1 millimeter to less than 38 millimeters and greater than 100 millimeters to 200 millimeters between; Percent opening is 1% to less than between 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310117192 CN1238105C (en) | 2003-12-05 | 2003-12-05 | Quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310117192 CN1238105C (en) | 2003-12-05 | 2003-12-05 | Quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1546218A CN1546218A (en) | 2004-11-17 |
| CN1238105C true CN1238105C (en) | 2006-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310117192 Expired - Lifetime CN1238105C (en) | 2003-12-05 | 2003-12-05 | Quick-speed fluidized bed reactor capable of realizing particles and gas back flow contact |
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| CN (1) | CN1238105C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433119A (en) * | 2018-12-10 | 2019-03-08 | 储晞 | It is used to prepare the reaction unit of particle and prepares the method for particle |
| CN109999734B (en) * | 2019-04-18 | 2021-01-01 | 山东大学 | Device and method for reverse flow heat exchange and reaction |
| CN110339799A (en) * | 2019-07-24 | 2019-10-18 | 刘路丹 | A kind of reaction kettle for multi-phase material reaction |
| CN111729504A (en) * | 2020-06-10 | 2020-10-02 | 上海交通大学 | Fluidized bed and moving bed coupled composite adsorption reaction device and application |
| CN111773915B (en) * | 2020-06-10 | 2022-07-15 | 上海交通大学 | Flue gas dry desulfurization process |
| CN114849613A (en) * | 2022-05-12 | 2022-08-05 | 黄河三角洲京博化工研究院有限公司 | Anhydrous foaming reaction kettle and anhydrous foaming method |
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2003
- 2003-12-05 CN CN 200310117192 patent/CN1238105C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1546218A (en) | 2004-11-17 |
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