CN101940900A - Impact gas-liquid distributor - Google Patents
Impact gas-liquid distributor Download PDFInfo
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- CN101940900A CN101940900A CN2009100124982A CN200910012498A CN101940900A CN 101940900 A CN101940900 A CN 101940900A CN 2009100124982 A CN2009100124982 A CN 2009100124982A CN 200910012498 A CN200910012498 A CN 200910012498A CN 101940900 A CN101940900 A CN 101940900A
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Abstract
The invention discloses an impact gas-liquid distributor, belonging to the field of petrochemical equipment. The impact gas-liquid distributor comprises jet plates, mixing plates, connectors, a hood, gas-phase cofferdams and liquid guide pipes, wherein the liquid guide pipes are connected with the connectors; the gas-phase cofferdams are sleeved outside the liquid guide pipes and gas inlet passages are formed between the gas-phase cofferdams and the liquid guide pipes; flow guiding passages are formed between the connectors and the hood; the jet plates and the mixing plates are arranged above the liquid guide pipes; a plurality of jet holes are arranged on the jet plates; a plurality of jet flow holes are arranged on the mixing plates; and a plurality of gas inlets are arranged on the walls of the liquid guide pipes between the jet plates and the mixing plates. The gas-liquid distributor has simple structure, small volume, low pressure drop and high mass transfer efficiency, is especially suitable for realizing gas-liquid distribution with gas-solid-liquid phases in fluidized state in a fluidized bed reactor and can be widely applied to the fields of petrochemical industry and environmental protection.
Description
Technical field
The present invention relates to a kind of impact type gas-liquid distributor, being used for gas-liquid two-phase mixes, and gas-liquid two-phase is realized the operating mode of dispersion in the bed that with the liquid phase is continuous phase, belong to field of petrochemical industrial, be applicable to that gas, liquid in the reactor bed distribute, especially a kind ofly be used in fluidized bed reactor, realize that the gas-liquid that gas-solid-liquid three-phase is fluidized state distributes.Can be widely used in fields such as petrochemical industry and environmental protection.
Background technology
At present, gas-solid-liquid phase reactor adopts bubbling style reactor and stirred-tank reactor more, and above-mentioned reactor efficiency is low, energy consumption is high, and application scale, application are subjected to the restriction of reaction system.
The ebullated bed technology is little with bed pressure drop, reaction temperature evenly, do not have and stop up, be easy to heat-obtaining and be widely used in fields such as petrochemical industry and environmental protection, the residual hydrogenation field big especially for viscosity, that impurity is many.This technology characteristics is: in reactor be that continuous phase, gas-solid are decentralized photo phase, the reaction bed that forms gas-solid-liquid three-phase coexistence with the liquid phase, be fluidized state in this bed.
Effective mixing, mass-transfer efficiency and the operating flexibility of gas-solid-liquid three-phase is the important performance of fluidized bed reactor, and therefore, the gas-liquid distributor of excellent performance is the critical component of fluidized bed reactor.
Chinese patent CN1600413A has introduced a kind of gas distributor that is used for the three phase slurry bed bioreactor, is made up of false plate, many vapor risers, gas distribution tube group and a plurality of opening nozzles vertically downward.Deficiencies such as there is complex structure in this distributor, liquid phase flows backwards when tolerance fluctuates, the bubble of only distribute gas phase, generation is big, mass-transfer efficiency is low.Chinese patent CN2425703Y has introduced a kind of interior arrangement of fluidized bed reactor, this inner member is made up of vertically-arranged crossbeam and double-deck inverted V-shaped spare, bubble forms on double-deck inverted V-shaped spare, and this distributor exists complex structure, the deficiencies such as the bubble of gas phase, generation is big, bubble is inhomogeneous, mass-transfer efficiency is low that distribute only.In some reactors, normally used gas distributor, most employing Johnson net the generation bubble, have deficiencies such as the bubble that only distributes gas phase and produce is big, mass-transfer efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, to provide a kind of impact type gas-liquid distributor.Impact type gas-liquid distributor device structure of the present invention is simple, volume is little, pressure drop is little, do not have obstruction, be applicable to that gas, liquid in the up-flow reactor bed distribute, be particularly useful in fluidized bed reactor, realizing that gas-solid-liquid three-phase is the gas-liquid distribution of fluidized state.
The present invention is achieved in that a kind of impact type gas-liquid distributor, constitute by injection dish, mixing pan, connector, rain cap, gas phase cofferdam and catheter, described catheter is connected with connector, the gas phase cofferdam is sleeved on outside the catheter and is fixed on the connector, forms inlet channel between gas phase cofferdam and catheter; The corresponding end face with rain cap of described connector is similar figures, forms drainage channel; On the top of catheter injection dish and mixing pan are set, on the injection dish, offer spray-hole, on mixing pan, offer jet orifice; 1～4 layer of air admission hole is set on the catheter tube wall between injection dish and the mixing pan.
According to gas-liquid mass transfer and reactor bed material characteristic distributions, impact type gas-liquid distributor of the present invention is provided with gas phase cofferdam and catheter, forms the gas-liquid shunting; The injection dish is set in catheter, has improved flow velocity during liquid phase process jet dish, form jet; Offer air admission hole on the catheter tube wall between injection dish and the mixing pan, the liquid phase jet sucks and carries secretly gas phase; Mixing pan is set in the catheter, and gas-liquid two-phase forms and stream at mixing pan, realizes acceleration, because the speed difference that gas-liquid two-phase obtains, gas phase obtains disperseing, and forms even, tiny bubble; Rain cap and connector are set, form drainage channel between the two, gas-liquid two-phase enters reactor bed through drainage channel, realize that gas-liquid distributes, gas-liquid mass transfer, and formation laminar flow, gas-liquid two-phase impacts the pellet type catalyst in the bed, realizes with the liquid phase being that continuous phase, gas-solid are the gas-solid-liquid fluidized state of decentralized photo in reactor; The drainage channel end that connector and rain cap form is provided with downward straight section, prevents catalyst reverse flow when shutting down.
Impact type gas-liquid distributor device structure of the present invention is simple, volume is little, pressure drop is little, mass-transfer efficiency is high.Be applicable to that gas, liquid in the up-flow reactor bed distribute.
Description of drawings
Fig. 1 is the general structure schematic diagram of gas-liquid distributor of the present invention.
Fig. 2 is the structural representation of mixing pan.
Fig. 3 is the vertical view of mixing pan.
Fig. 4 is the enlarged diagram of I portion among Fig. 2.
Fig. 5 is the structural representation of injection dish.
Fig. 6 is the vertical view of injection dish.
Fig. 7 is the enlarged diagram of I portion among Fig. 5.
Fig. 8 is the structural representation of connector.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.As shown in Figure 1, 2, 3, impact type gas-liquid distributor of the present invention is made of parts such as injection dish 6, mixing pan 5, connector 4, rain cap 1, gas phase cofferdam 7, catheter 12, stop collar 2, adapter sleeve 9, positioning sleeve 11, shop bolt 10, screw 8 and connecting rods 3.
Impact type gas-liquid distributor of the present invention is provided with gas phase cofferdam 7 and catheter 12, and gas phase cofferdam length is 1/3～2/3 of catheter length; Annulus area between gas phase cofferdam and catheter is 1/3～2 times of catheter sectional area, preferred 1～1.5 times.Annular region between gas phase cofferdam and catheter constitutes gas phase channel, and catheter stretches under the liquid, is liquid channel, and gas phase cofferdam and catheter promptly are set, and forms gas, two runners of liquid.
Install injection dish 6 at the catheter high inside, offer some spray-holes on the injection dish, spray-hole is made of contraction section and aditus laryngis; The aditus laryngis total sectional area is 20%～60% of a catheter sectional area, preferred 25%～36%; Aditus laryngis length is 2～15mm, preferred 5～10mm; The contraction section sectional area is 2～5 times of aditus laryngis sectional area; 20 °～40 ° of contraction section angle of throat (b), preferred 23 °～29 °.Improve flow velocity during liquid phase process injection dish, formed jet.
Offer air admission hole on the catheter tube wall between injection dish 6 and the mixing pan 5: air admission hole is offered 1～4 layer, and air admission hole is staggered; Offer 4～20 holes for every layer; Aperture ∮ 1～∮ 3mm; The air admission hole total sectional area is 10%～40% of a catheter sectional area.Positioning sleeve 11 is set between injection dish and the mixing pan, realizes fixing, adapter sleeve 9 and screw 8 realization fixed installations are set on catheter top with shop bolt 10.During the space of liquid phase stream between injection dish and mixing pan, gas phase enters this space through air admission hole.
Mixing pan 5 is set in the catheter, offers some jet orifices on the mixing pan; This hole is made of contraction section, aditus laryngis and expansion segment; The aditus laryngis sectional area is 40%～80% of a catheter sectional area; Aditus laryngis length is 2～15mm, preferred 3～10mm; Contraction section equates with the maximum secting area of expansion segment, is 2～5 times of aditus laryngis total sectional area; The contraction section angle of throat is 20 °～40 °; The angle of flare of expansion segment is 10 °～30 °.Gas-liquid two-phase forms at the mixing pan place and stream, realizes quickening, because the speed difference that gas-liquid two-phase obtains, gas phase obtains disperseing, and forms even, tiny bubble.
Impact type gas-liquid distributor of the present invention, during work, liquid phase is by the catheter input gas-liquid distributor that inserts liquid layer, and gas phase enters gas-liquid distributor by the annular channel between gas phase cofferdam and catheter, forms the gas-liquid shunting; Improve flow velocity during the injection dish place of liquid phase stream in catheter, formed injection stream; The air admission hole that gas phase is offered on the catheter tube wall between injection dish and the mixing pan is sucked and carries secretly gas phase by the liquid phase jet; Gas-liquid two-phase forms and stream at mixing pan, and realizes acceleration, because the speed difference that gas-liquid two-phase obtains, gas phase obtains disperseing, and forms even, tiny bubble; With the liquid phase be continuous phase, evenly tiny bubble is the drainage channel of fluid through between rain cap and connector of decentralized photo, enter reactor bed, realize that gas-liquid distributes, gas-liquid mass transfer, and formation laminar flow, impact the pellet type catalyst in the bed, in reactor, realize being that continuous phase, gas-solid are the gas-solid-liquid fluidized state of decentralized photo with the liquid phase; The drainage channel end that connector and rain cap form is provided with downward straight section, and the angle of dump slope that it highly forms greater than the catalyst buildup angle, prevents catalyst reverse flow when shutting down.
Claims (14)
1. impact type gas-liquid distributor, constitute by injection dish, mixing pan, connector, rain cap, gas phase cofferdam and catheter, described catheter is connected with connector, and the gas phase cofferdam is sleeved on outside the catheter and is fixed on the connector, forms inlet channel between gas phase cofferdam and catheter; The corresponding end face with rain cap of described connector is similar figures, forms drainage channel; Be provided with injection dish and mixing pan on the top of catheter, on the injection dish, offer spray-hole, on mixing pan, offer jet orifice; 1～4 layer of air admission hole is set on the catheter tube wall between injection dish and the mixing pan.
2. according to the described impact type gas-liquid distributor of claim 1, it is characterized in that described air admission hole is staggered arranges, and offers 4～20 for every layer.
3. according to claim 1 or 2 described impact type gas-liquid distributors, it is characterized in that described air admission hole aperture is ∮ 1～∮ 3mm, the air admission hole total sectional area is 10%～40% of a catheter sectional area.
4. according to the described impact type gas-liquid distributor of claim 1, it is characterized in that described spray-hole is made of contraction section and aditus laryngis section.
5. according to the described impact type gas-liquid distributor of claim 4, it is characterized in that the total sectional area of described aditus laryngis section is 20%～60% of a catheter sectional area, the aditus laryngis segment length is 2～15mm.
6. according to the described impact type gas-liquid distributor of claim 4, it is characterized in that the sectional area of described contraction section is 2～5 times of aditus laryngis sectional area, the contraction section angle of throat is 20 °～40 °.
7. according to the described impact type gas-liquid distributor of claim 1, it is characterized in that described jet orifice is made of contraction section, aditus laryngis section and expansion segment.
8. according to the described impact type gas-liquid distributor of claim 7, it is characterized in that the total sectional area of described aditus laryngis section is 40%～80% of a catheter sectional area, the aditus laryngis segment length is 2～15mm.
9. according to the described impact type gas-liquid distributor of claim 7, it is characterized in that described contraction section equates with the maximum secting area of expansion segment, be 2～5 times of aditus laryngis sectional area.
10. according to the described impact type gas-liquid distributor of claim 7, it is characterized in that the angle of throat of described contraction section is 20 °～40 °, the angle of flare of described expansion segment is 10 °～30 °.
11. according to the described impact type gas-liquid distributor of claim 1, it is characterized in that described rain cap and connector are fixed with stop collar and connecting rod, the exit sectional area of described drainage channel is 80%～120% of a catheter sectional area.
12., it is characterized in that described connector aditus laryngis sectional area is 40%～60% of a catheter sectional area according to the described impact type gas-liquid distributor of claim 1, aditus laryngis length is 2～15mm.
13., it is characterized in that described drainage channel end is provided with downward straight section according to the described impact type gas-liquid distributor of claim 1, the length of straight section is 3～10mm downwards.
14., it is characterized in that the length in described gas phase cofferdam is 1/3～2/3 of catheter length according to the described impact type gas-liquid distributor of claim 1, the annulus area between gas phase cofferdam and catheter is 1/3～2 times of catheter sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100124982A CN101940900B (en) | 2009-07-09 | 2009-07-09 | Impact gas-liquid distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100124982A CN101940900B (en) | 2009-07-09 | 2009-07-09 | Impact gas-liquid distributor |
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| Publication Number | Publication Date |
|---|---|
| CN101940900A true CN101940900A (en) | 2011-01-12 |
| CN101940900B CN101940900B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100124982A Active CN101940900B (en) | 2009-07-09 | 2009-07-09 | Impact gas-liquid distributor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923131A (en) * | 2014-03-19 | 2015-09-23 | 中石化洛阳工程有限公司 | Gas-liquid distributor used for wood tar fluidized bed reactor |
| CN110270282A (en) * | 2019-07-04 | 2019-09-24 | 华东理工大学 | One kind dividing shape bubble configuration controllable type paste state bed reactor |
| CN113398847A (en) * | 2021-06-04 | 2021-09-17 | 中国石油大学(华东) | Intensive mixed cyclone reactor for ionic liquid alkylation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2127976Y (en) * | 1992-05-13 | 1993-03-10 | 北京航空航天大学 | Two-phase flow air bulb atomization nozzle |
| CN1233454C (en) * | 2003-09-28 | 2005-12-28 | 上海兖矿能源科技研发有限公司 | Gas distributor in use for reactor in slurry state bed in three phases |
| DE102005048489A1 (en) * | 2005-10-07 | 2007-04-19 | Dieter Prof. Dr.-Ing. Wurz | Two-fluid nozzle with annular gap atomization |
-
2009
- 2009-07-09 CN CN2009100124982A patent/CN101940900B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923131A (en) * | 2014-03-19 | 2015-09-23 | 中石化洛阳工程有限公司 | Gas-liquid distributor used for wood tar fluidized bed reactor |
| CN104923131B (en) * | 2014-03-19 | 2017-10-31 | 中石化洛阳工程有限公司 | Gas-liquid distributor for wood tar fluidized bed reactor |
| CN110270282A (en) * | 2019-07-04 | 2019-09-24 | 华东理工大学 | One kind dividing shape bubble configuration controllable type paste state bed reactor |
| CN113398847A (en) * | 2021-06-04 | 2021-09-17 | 中国石油大学(华东) | Intensive mixed cyclone reactor for ionic liquid alkylation |
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| Publication number | Publication date |
|---|---|
| CN101940900B (en) | 2012-05-30 |
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