CN206215214U - A kind of reactor for preparing aluminium hydroxide - Google Patents

A kind of reactor for preparing aluminium hydroxide Download PDF

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Publication number
CN206215214U
CN206215214U CN201621274257.7U CN201621274257U CN206215214U CN 206215214 U CN206215214 U CN 206215214U CN 201621274257 U CN201621274257 U CN 201621274257U CN 206215214 U CN206215214 U CN 206215214U
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China
Prior art keywords
reactor
rotor
stator
reactor described
gas
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CN201621274257.7U
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Chinese (zh)
Inventor
赵利民
王永林
袁胜华
王晶晶
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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Abstract

The utility model provides a kind of reactor for preparing aluminium hydroxide, and the reactor includes reactor shell, premix self-priming component and drives sealing system;The reactor shell includes upper cover, cylinder and low head, and wherein upper cover is provided with outlet port, and low head is provided with discharging hole, and cylinder middle and lower part is provided with liquid inlet opening and gas charging aperture, and cylinder top is provided with reactor slurry flow export;The premix self-priming component is arranged inside reactor.The reactor improves mass-transfer efficiency, improves the utilization rate of gas.

Description

A kind of reactor for preparing aluminium hydroxide
Technical field
The utility model is related to chemical field, more specifically to a kind of reactor for preparing aluminium hydroxide.
Background technology
γ- Al2O3Generally it is calcined at high temperature by boehmite and is obtained.γ-the Al of production2O3Precursor intends thin water Aluminium stone(PB)Method have various, be generally divided into neutralisation and aluminium alcoholates Hydrolyze method, neutralisation such as NaAlO2 -HNO3Method, NaAlO2 – Al2(SO4)3Method and AlCl3-NaOH (NH3 .H2O) method etc., they be all acids and the class I liquid I of bases two and Stream neutralization reaction.By the pH value situation of change in course of reaction, pH value swing method and pH value constant method can be divided into.Using meta-aluminic acid Sodium solution and carbon dioxide(Carbonizatin method)The method that thin aluminium stone is intended in reaction generation, can be regarded as using carbon dioxide as acid source Neutralisation, carbonizatin method production intend thin aluminium stone because raw material sources convenience, production process " environmental protection ", it is with low cost obtain extensively General application.
CN104667850A discloses the preparation method of a kind of reactor and its boehmite.Set in the reactor cylinder body There is dividing plate that reactor inner chamber is axially subdivided into two regions, dividing plate sets on center shaft, and dividing plate rotates with central axis; In each area, charging aperture is provided with respective reaction device cylinder bottom, at least one is provided with the outside of respective reaction device cylinder Matter Transfer pipeline, recycle stock is exported on top, and recycle stock entrance is provided with excessive in bottom on respective reaction device cylinder top Head piece, its position exports higher than recycle stock.The continuous gel formation of pH swing methods can be realized using the reactor.But its reactor knot Structure is complicated, have rotatable parts, rotating barrier sealing difficult, is unfavorable for long-term operation and the maximization of equipment;The reactor is grasped Make complexity, control difficulty is big, be difficult even running;There is also simultaneously and take the crystal of different developmental phases in the lump from reactor Go out, the boehmite particle size distribution problem for obtaining.
Boehmite prepared by carbonizatin method is limited by environment, and synthesis boehmite process is batch (-type), intends thin water aluminium The pore volume randomness that stone is formed is big, and in reaction slurries pH value it is descending change always, cause boehmite property not Stabilization, pore-size distribution disperse, so that by using the modes such as addition physics expanding agent, chemical enlargement agent just in the preparation of carrier Suitable catalyst carrier can be produced, therefore increased catalyst preparation difficulty.Thin water is intended in other intermittent carbonization method synthesis Aluminium stone has fluctuation per the quality of batch reactor product.Therefore, realize that continuous carbonization reaction prepares aluminium hydroxide, carry out continuous Change, large-scale production, it is ensured that the stabilization of product quality, is always focus of concern.Current reactor is also existed instead The shortcoming for answering big device energy consumption, gas skewness, utilization rate low.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of reactor for preparing aluminium hydroxide, the reactor Mass-transfer efficiency is improve, the utilization rate of gas is improve.
The utility model provides a kind of reactor for preparing aluminium hydroxide, and reactor includes reactor shell, premix self-priming Component and driving sealing system;The reactor shell includes upper cover, cylinder and low head, and wherein upper cover is provided with waste gas Outlet, low head is provided with discharging hole, and cylinder middle and lower part is provided with liquid inlet opening and gas charging aperture, and cylinder top is provided with instead Answer device slurry flow port;The premix self-priming component is arranged inside reactor, and the premix self-priming component includes charging gas-liquid Static mixer, stator, rotor, air inlet sealing gland and agitating shaft, agitating shaft are driven by the driving sealing system outside reactor low head Dynamic, rotor uses closed palintrope flow channel type impeller, rotor to be fixed on agitating shaft and driven by agitating shaft and rotate together, turn Sub- porch is provided with sealing gland, and with the outlet of charging gas-liquid static mixer diametrically, stator is by fixed for the air inlet of rotor Son is supported and fixed on the outer wall of charging gas-liquid static mixer or on the inwall of reactor, and Air deflector is housed in stator, Gap is left between rotor and stator.
In the reactor for preparing aluminium hydroxide described in the utility model, the 1/ of a diameter of reactor diameter of the rotor 2~1/30, preferably the 1/3~1/15 of reactor diameter.
In the reactor for preparing aluminium hydroxide described in the utility model, the stator outer diameter for root diameter 1.5~ 4.0 times, preferably 2.0~3.0 times.
In the reactor for preparing aluminium hydroxide described in the utility model, the spacing of the stator and rotor for 0.5~ 5.0mm, preferably 1.0~2.5mm.
In the reactor for preparing aluminium hydroxide described in the utility model, the rotating speed of the rotor for 200~8000 turns/ Point, preferably 500~3000 revs/min.
In the reactor for preparing aluminium hydroxide described in the utility model, the Air deflector is 15 ° with the angle of radial direction ~60 °, preferably 25 °~45 °;The quantity of Air deflector is 3~20, preferably 6~16.Impeller blade quantity is 2~8, Preferably 4~8.
In the reactor for preparing aluminium hydroxide described in the utility model, 8 ° of the blade digression of the palintrope flow channel type impeller ~80 °, preferably 15 °~50 °.
Compared with prior art, it is when aluminium hydroxide is prepared using reactor described in the utility model, sodium metaaluminate is molten Liquid or bottom water add reactor and submerge rotor, and because rotor rotates at a high speed, liquids and gases are under the influence of centrifugal force therefrom When the heart is thrown toward outer rim, negative pressure is formed at the heart in the rotor, rotor speed is bigger, and caused negative pressure is bigger, due to rotor Cavity is communicated with charging gas-liquid static mixer, therefore, gas and liquid are constantly inhaled into, and get rid of to rotor edge, by leading Gas-liquid is uniformly distributed to rotor to throw away, due to the stirring action of rotor, gas-liquid is forming strong mixed flow (turbulent flow), makes just The gas-liquid mixture for leaving rotor splits into trickle bubble in the solution of continuous circulation immediately, and is mixed under turbulence state Close, seethe, being diffused into whole tank, therefore self-priming aerating device completes CO while stirring2And the gas of sodium metaaluminate Liquid reacts.Mass-transfer efficiency is improve, the utilization rate of gas is improve.
Brief description of the drawings
Fig. 1 is the structure of reactor schematic diagram for preparing aluminium hydroxide described in the utility model.
Fig. 2 is premix self-priming modular construction schematic diagram described in the utility model.
Fig. 3 is premix self-priming component top plan view described in the utility model.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples.Following reality Example is applied for illustrating the utility model, but is not limited to scope of the present utility model.
In description of the present utility model, it is necessary to explanation, term " on ", D score, " interior ", " outward ", " top ", " bottom " Orientation or position relationship Deng instruction are, based on orientation shown in the drawings or position relationship, to be for only for ease of and describe this practicality newly Type and simplified description, must be with specific orientation, with specific orientation rather than instruction or the signified device of hint or element Construction and operation, therefore it is not intended that to limitation of the present utility model.Additionally, term " first ", " second " are only used for description Purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to explanation, unless otherwise clearly defined and limited, term " sets in description of the present utility model Have ", " being placed in ", " connected ", " connection ", " installation " etc. should be interpreted broadly, for example, it may be being fixedly connected, or can Dismounting connection, or be integrally connected;Can mechanically connect, or electrically connect;Can be joined directly together, it is also possible to pass through Intermediary is indirectly connected to, and can be two connections of element internal.For the ordinary skill in the art, can have Body situation understands concrete meaning of the above-mentioned term in the utility model.
The utility model discloses a kind of reactor for preparing aluminium hydroxide, and as shown in FIG. 1 to 3, reactor 1 includes reaction Device housing, premix self-priming component 2 and driving sealing system 3;The reactor shell includes upper cover 4, cylinder 5 and low head 6, Wherein upper cover 4 is provided with outlet port 7, and low head 6 is provided with discharging hole 8, and the middle and lower part of cylinder 5 is provided with liquid inlet opening 9 With gas charging aperture 16, the top of cylinder 5 is provided with reactor slurry flow export 18;The premix self-priming component 2 is arranged at reactor 1 Inside, the premix self-priming component 2 includes charging gas-liquid static mixer 12, stator 10, rotor 11, air inlet sealing gland 13 and stirring Axle 17, agitating shaft 17 is driven by the driving sealing system 3 outside the low head 6 of reactor 1, and rotor 11 uses closed palintrope flow channel type Impeller, rotor 11 is fixed on agitating shaft 17 and is driven by agitating shaft 17 and rotated together, and the porch of rotor 11 is provided with air inlet Sealing gland 13, with the outlet of charging gas-liquid static mixer 12 diametrically, stator 10 is supported the air inlet of rotor 11 by stator 14 are fixed on the outer wall of charging gas-liquid static mixer 12 or on the inwall of reactor 1, and Air deflector is housed in stator 10, Air deflector is seamlessly connected with the upper and lower cover plate of stator 10, and then stator is divided into several diffused passages, extends gas-liquid The path of flowing, increased gas-liquid contact time, be conducive to improving gas effciency, control secondary nucleation speed.The He of rotor 11 Gap 15 is left between stator 10.
The course of work of the reactor is described below, hydroxide is prepared when reactor described in the utility model is used During aluminium, in adding above-mentioned reactor sodium aluminate solution or bottom water are measured through flowmeter first after, until after submergence rotor 11 Stop, start operation makes wheel speed control between 200~5000 revs/min, between preferably 500~3000 revs/min, with The high speed rotation of rotor 11, material is thrown toward outer rim from center under the influence of centrifugal force, and the center of rotor 11 forms negative Intermediate pressure section, and the bigger negative pressure value of rotating speed is higher.At the same time, gas feed mouthful 16 and liquid inlet opening 9 are opened, is entered through gas Material mouth 16 is continuously passed through the CO that concentration is 50 ~ 98%2Gas, is at the same time continuously added to sodium metaaluminate molten through liquid inlet opening 9 Liquid, and control the gas-liquid charge ratio to make in reactor slurries PH controls between 9.5 ~ 11.5, between preferably 10.0 ~ 10.5;Gas Outlet of the liquid mixture by the road into after being thoroughly mixed in gas-liquid static mixer 12 through blender 12 is flowed out, and then negative Under pressure effect, gas-liquid mixture is inhaled into the negative pressure region of rotor 11, and rotor 11 rotates at a high speed, and is provided with stirring structure, flows through The gas-liquid mixed material of rotor 11 forms strong mixed flow in rotor 11(Turbulent flow), the bubble in gas-liquid mixed material beaten Broken to split into trickle bubble and make gas-liquid mixed evenly, subsequent gas-liquid mixed material is thrown toward and turns under the influence of centrifugal force again The outer rim of son 11, the material thrown away by rotor 11, into stator 10, at the same time, due to being deposited between rotor 11 and stator 10 Material in gap, partial reaction device is together brought in stator 10 through space.In the presence of inertia, material is through stator Interior diffused passage is exited into reactor, and drives the material in reactor to stir.In leaving the material of stator Fine gas bubbles diffuse to rapidly whole reactor, and constantly rising continues to complete gas liquid reaction in reactor 1, last residue gas The reacted device gas discharge outlet 7 of body is discharged.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model know-why is not departed from, some improvement and modification can also be made, these change Enter and protection domain of the present utility model is also should be regarded as with modification.

Claims (15)

1. a kind of reactor for preparing aluminium hydroxide, the reactor includes reactor shell, premix self-priming component and drives close Envelope system;The reactor shell includes upper cover, cylinder and low head, and wherein upper cover is provided with outlet port, lower envelope Head is provided with discharging hole, and cylinder middle and lower part is provided with liquid inlet opening and gas charging aperture, and cylinder top is provided with reactor slurry stream Outlet;The premix self-priming component is arranged inside reactor, the premix self-priming component include charging gas-liquid static mixer, Stator, rotor, air inlet sealing gland and agitating shaft, agitating shaft are driven by the driving sealing system outside reactor low head, and rotor is used Closed palintrope flow channel type impeller, rotor is fixed on agitating shaft and is driven by agitating shaft and rotated together, is set at rotor inlet Sealing gland is equipped with, with the outlet of charging gas-liquid static mixer diametrically, stator is supported and fixed the air inlet of rotor by stator On the outer wall of charging gas-liquid static mixer or on the inwall of reactor, Air deflector, rotor and stator are housed in stator Between leave gap.
2. according to the reactor described in claim 1, it is characterised in that:The 1/2 of a diameter of reactor diameter of the rotor~ 1/30。
3. according to the reactor described in claim 2, it is characterised in that:The 1/3 of a diameter of reactor diameter of the rotor~ 1/15。
4. according to the reactor described in claim 1, it is characterised in that:The stator outer diameter is the 1.5~4.0 of root diameter Times.
5. according to the reactor described in claim 4, it is characterised in that:The stator outer diameter is the 2.0~3.0 of root diameter Times.
6. according to the reactor described in claim 1, it is characterised in that:The spacing of the stator and rotor is 0.5~5.0mm.
7. according to the reactor described in claim 6, it is characterised in that:The spacing of the stator and rotor is 1.0~2.5mm.
8. according to the reactor described in claim 1, it is characterised in that:The rotating speed of the rotor is 200~8000 revs/min.
9. according to the reactor described in claim 1, it is characterised in that:The angle of the Air deflector and radial direction is 15 °~ 60°。
10. according to the reactor described in claim 9, it is characterised in that:The angle of the Air deflector and radial direction is 25 °~ 45°。
11. according to the reactor described in claim 1, it is characterised in that:The quantity of the Air deflector is 3~20.
12. according to the reactor described in claim 11, it is characterised in that:The quantity of the Air deflector is 6~16.
13. according to the reactor described in claim 1, it is characterised in that:The impeller blade quantity is 2~8.
14. according to the reactor described in claim 1, it is characterised in that:The blade digression of the palintrope flow channel type impeller is 8 ° ~80 °.
15. according to the reactor described in claim 14, it is characterised in that:The blade digression of the palintrope flow channel type impeller is 15 °~50 °.
CN201621274257.7U 2016-11-25 2016-11-25 A kind of reactor for preparing aluminium hydroxide Active CN206215214U (en)

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CN201621274257.7U CN206215214U (en) 2016-11-25 2016-11-25 A kind of reactor for preparing aluminium hydroxide

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Application Number Priority Date Filing Date Title
CN201621274257.7U CN206215214U (en) 2016-11-25 2016-11-25 A kind of reactor for preparing aluminium hydroxide

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110433759A (en) * 2019-09-03 2019-11-12 湖北襄化机械设备有限公司 A kind of methoxy ethylene synthetic tower
CN111097340A (en) * 2018-10-29 2020-05-05 中国石油化工股份有限公司 Coupling reactor and application thereof in preparation of high-crystallinity alumina dry glue

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111097340A (en) * 2018-10-29 2020-05-05 中国石油化工股份有限公司 Coupling reactor and application thereof in preparation of high-crystallinity alumina dry glue
CN110433759A (en) * 2019-09-03 2019-11-12 湖北襄化机械设备有限公司 A kind of methoxy ethylene synthetic tower

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