CN110193333B - Gas-liquid-solid multiphase tubular stirring reactor - Google Patents
Gas-liquid-solid multiphase tubular stirring reactor Download PDFInfo
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- CN110193333B CN110193333B CN201910535114.9A CN201910535114A CN110193333B CN 110193333 B CN110193333 B CN 110193333B CN 201910535114 A CN201910535114 A CN 201910535114A CN 110193333 B CN110193333 B CN 110193333B
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- stirring shaft
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- stirring
- liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
- B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
- B01F27/11251—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis having holes in the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1812—Tubular reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1812—Tubular reactors
- B01J19/1818—Tubular reactors in series
Abstract
A gas-liquid-solid multiphase tubular stirring reactor is characterized in that the front end of a tubular shell is provided with a feed inlet, and the rear end of the tubular shell is provided with a discharge outlet; the stirring shaft is assembled on the front end plate and the rear end plate, the stirring shaft is of a hollow structure, one end of the stirring shaft is assembled with the driving motor, and the other end of the stirring shaft is provided with an air inlet communicated with an internal channel of the stirring shaft; the connecting rod and the blades of the stirring paddle are both of hollow structures, and the internal channels are communicated with each other and communicated with the inside of the stirring shaft; the wall surface of the paddle is provided with an air outlet. The device of the invention can control the size of the air bubble by changing the size of the air hole; gas can be uniformly distributed throughout the whole reactor at the same time; can inhibit scar formation.
Description
Technical Field
The invention belongs to the technical field of biological, chemical and metallurgical equipment, and particularly relates to a gas-liquid-solid multiphase tubular stirring reactor.
Background
The gas-liquid-solid multiphase reactor is widely applied to the fields of wet metallurgy, petrochemical industry, biochemical industry, food industry, environmental management and the like; in a gas-liquid-solid three-phase system, liquid is generally regarded as a continuous phase, solid particles and gas are regarded as a dispersed phase, and mixing, dispersing, transferring and reacting of different phase-state substances exist in the system; in order to realize good interphase mass transfer, improve the heat transfer and mass transfer efficiency and accelerate the reaction process, the uniform dispersion of gas in a reactor and the uniform bottom suspension of solid particles need to be ensured simultaneously; therefore, how to enhance the gas-liquid-solid mixing effect, enhance the mass transfer and reduce the energy consumption of the reactor is the development direction of the gas-liquid-solid multiphase reactor.
The patent publication No. CN106040108A discloses a gas-liquid-solid three-phase reactor; the gas-liquid-solid three-phase reactor comprises a bubbling bed reactor and a stirring reactor which are communicated, wherein the bubbling bed reactor comprises a cylinder body, a slurry inlet and a gas distributor, and is mainly applied to continuous catalytic oxidation synthesis of glyphosate; the reactor realizes the dispersion of gas through a gas distributor; the patent publication No. CN105582857A discloses a gas-liquid-solid three-phase reactor and an application method thereof, wherein the reactor comprises a top feeding hole, a bottom discharging hole, a pre-distributor, a gas-liquid distribution disc, an annular baffle plate on the inner wall of the reactor, a plurality of layers of gas-liquid distribution discs and a catalyst bed layer. The reactor promotes gas-liquid to fully contact in radial and axial directions, obviously improves the gas-liquid distribution condition in the reactor, ensures that the gas-liquid is uniformly distributed in the reactor, reduces the adverse effect generated by wall flow, improves the reaction efficiency of a trickle bed, and is suitable for gas-liquid-solid three-phase reactions such as carbon three-liquid phase hydrogenation and the like; the patent of publication No. CN103084121B discloses a reactor with a reaction material of gas-liquid-solid three phases, which is suitable for gas-liquid-solid three-phase reaction at the temperature of 0-400 ℃ and the pressure of 0-30.0 MPa; the reactor is of a tower structure, and realizes the dispersion of gas and the contact of gas and liquid phases through a gas-liquid distribution disc; the patent of publication number CN107287416A discloses a gas-liquid-solid three-phase wet reactor, belongs to the technical field of wet metallurgy, and is designed for solving the problems of small gas contact area and the like caused by large bubble volume in the existing method.
The reactor in the invention is tower type or kettle type, and no matter the gas is dispersed by a gas distributor or an aeration head, the general problem is that the refinement and uniform distribution of the gas cannot be ensured, the retention time is relatively short, and the efficient utilization of the gas and the full reaction are not facilitated.
Disclosure of Invention
Aiming at the current research situation of the gas-liquid-solid multiphase reactor, the invention provides a gas-liquid-solid multiphase tubular stirring reactor, materials are added into the reactor through a feed inlet in the reaction process, then the gas is introduced into the reactor through a gas inlet directly connected with a stirring shaft, the gas enters a stirring blade through the hollow stirring shaft and then enters the reactor through micropores on the blade, so that small bubbles for increasing the contact area of the gas are obtained, the gas-liquid contact area is increased, and the reaction is enhanced.
The gas-liquid-solid multiphase tubular stirring reactor comprises a tubular shell, a stirring shaft and stirring paddles; a feed inlet is arranged above the side wall of the front end of the tubular shell, and a discharge outlet is arranged below the side wall of the rear end; the stirring shaft is assembled on the front end plate and the rear end plate of the tubular shell, is of a hollow structure, one end of the stirring shaft is assembled with the driving motor, and the other end of the stirring shaft is provided with an air inlet communicated with an internal channel of the stirring shaft; the stirring paddle is fixed on the stirring shaft, and the length of the stirring paddle is matched with the inner space of the tubular shell; the stirring paddle consists of a plurality of connecting rods and a plurality of blades, the two ends of each connecting rod are respectively connected with the stirring shaft and one blade, and the two ends of each blade are respectively connected with one connecting rod; each connecting rod and each blade are of a hollow structure, the internal channels of the blades and the internal channels of the connecting rods are communicated with each other, and the internal channel of each connecting rod is communicated with the internal channel of the stirring shaft; the wall surface of each paddle is provided with an air outlet which communicates the internal channel of the paddle with the inside of the tubular shell.
The aperture of the air outlet is 1 micron-5 mm.
In the stirring reactor, the blades are of a pipeline structure, and the air outlet holes are arranged in one or more rows along the wall surfaces of the blades; when the air outlet holes are arranged in a plurality of rows, two adjacent rows of air outlet holes are symmetrically arranged or staggered.
In the stirring reactor, when the air outlets are arranged in one or more rows, the distance between two adjacent air outlets in each air outlet is equal.
In the above stirred reactor, the vertical cross-sectional area of the inner channel of the stirring shaft is greater than or equal to the sum of the cross-sectional areas of all the gas outlets.
In the above stirred reactor, an exhaust port is provided above the tubular housing.
The use method of the gas-liquid-solid multiphase tubular stirring reactor comprises the following steps:
introducing a liquid-phase material and a solid-phase material into the tubular shell through the feed inlet, and inputting gas into an internal channel of the stirring shaft through the gas inlet; starting a driving motor to enable a stirring shaft to drive a stirring paddle to rotate; the gas is discharged from the gas outlet hole through the internal channel of the connecting rod and the internal channel of the paddle, and tiny bubbles are formed in the liquid-phase material in the tubular shell; under the rotation action of the stirring paddle, the micro bubbles are quickly contacted and mixed with the liquid-phase material and the solid-phase material to finish the reaction process; discharging the reacted mixture through a discharge hole.
In the above method, the gas separated from the liquid phase material is discharged through the gas outlet above the rear end of the tubular housing.
The gas phase medium enters the stirring paddle through the stirring shaft, then enters the reactor through the gas outlet holes in the stirring paddle, and the gas passing through the gas outlet holes is uniformly thinned and distributed to the whole reactor; meanwhile, liquid and solid phases enter the reactor through the feed inlet, and the solids are uniformly suspended in the tubular reactor under the stirring action and fully contacted with gas, so that the uniform distribution of the gas, the liquid and the solid phases is finally realized.
The invention has the advantages that: 1. gas enters the reactor through the mesh-shaped air holes on the stirring paddle, and the size of bubbles entering the reactor can be controlled by changing the size of the mesh-shaped air holes; 2. the stirring paddles are distributed in the whole reactor, so that gas can be uniformly distributed in the whole reactor at the same time; 3. the gas impacts the wall surface of the container, so that the effect of inhibiting scabbing can be achieved; 4. multiple reactors may be used in series.
Drawings
FIG. 1 is a schematic sectional view of a gas-liquid-solid multiphase tubular stirred reactor in an embodiment of the present invention;
FIG. 2 is a schematic structural view of an arrangement mode of air outlet holes on a blade in the embodiment of the invention;
in the figure, the device comprises a feed inlet 1, a feed inlet 2, blades 3, a connecting rod 4, a stirring shaft 5, a discharge outlet 6, an exhaust port 7, a driving motor 8, an air inlet 9 and an air outlet.
Detailed Description
The length of the blade in the embodiment of the invention is 120 mm.
The diameter of the feed inlet in the embodiment of the invention is 50 mm.
The length of the tubular shell in the embodiment of the invention is 1000 mm.
The diameter of the tubular shell in the embodiment of the invention is 200 mm.
In the embodiment of the invention, the liquid-phase material is water, the solid-phase material is glass beads, and the gas is air.
In the embodiment of the invention, the liquid-solid ratio of the liquid-phase material and the solid-phase material entering the tubular shell is 3L/kg.
In the embodiment of the invention, the bulk density of the solid-phase material is 1.0-2.1 tons/cubic meter.
The rotating speed of the stirring paddle in the embodiment of the invention is 250 rpm.
In the embodiment of the invention, the flow rate of the gas entering the gas inlet is 20L/min.
Example 1
The gas-liquid-solid multiphase tubular stirring reactor is shown in figure 1 and comprises a tubular shell, a stirring shaft 4 and stirring paddles; a feed inlet 1 is arranged above the side wall of the front end of the tubular shell, and a discharge outlet 5 is arranged below the side wall of the rear end; the stirring shaft 4 is assembled on a front end plate and a rear end plate of the tubular shell, the stirring shaft 4 is of a hollow structure, one end of the stirring shaft 4 is assembled with the driving motor 7, and the other end of the stirring shaft is provided with an air inlet 8 communicated with an internal channel of the stirring shaft 4;
the stirring paddle is fixed on the stirring shaft 4, and the length of the stirring paddle is matched with the inner space of the tubular shell; the stirring paddle consists of a plurality of connecting rods 3 and a plurality of blades 2, two ends of each connecting rod 3 are respectively connected with the stirring shaft 4 and one blade 2, and two ends of each blade 2 are respectively connected with one connecting rod 3; each connecting rod 3 and each blade 2 are of a hollow structure, the internal channels of the blades 2 and the internal channels of the connecting rods 3 are communicated with each other, and the internal channel of each connecting rod 3 is communicated with the internal channel of the stirring shaft 4; the wall surface of each blade 3 is provided with a plurality of air outlet holes 9, and each air outlet hole 9 communicates the internal channel of the blade 2 with the inside of the tubular shell;
the paddle 2 is of a pipeline structure, and the air outlet holes 9 are arranged in a row along the wall surface of the paddle 2 in a distribution mode shown in figure 2 (a); the distance between two adjacent air outlet holes in each air outlet hole is equal;
the aperture of the air outlet is 2 mm;
the vertical cross-sectional area of the internal channel of the stirring shaft 4 is greater than or equal to the sum of the cross-sectional areas of all the air outlets 9;
an exhaust port 6 is arranged above the tubular shell;
the using method comprises the following steps:
introducing a liquid-phase material and a solid-phase material into the tubular shell through the feed inlet, and inputting gas into an internal channel of the stirring shaft through the gas inlet; starting a driving motor to enable a stirring shaft to drive a stirring paddle to rotate; the gas is discharged from the gas outlet hole through the internal channel of the connecting rod and the internal channel of the paddle, and tiny bubbles are formed in the liquid-phase material in the tubular shell; under the rotation action of the stirring paddle, the micro bubbles are quickly contacted and mixed with the liquid-phase material and the solid-phase material to finish the reaction process; discharging the reacted mixed material through a discharge hole;
gas separated from the liquid phase material is discharged through an exhaust port above the rear end of the tubular shell;
compared with the traditional stirred tank reactor with the same volume, the average diameter of the bubbles of the gas-liquid-solid multiphase tubular reactor is reduced by 30 percent.
Example 2
The gas-liquid-solid multiphase tubular stirring reactor has the same structure as that of the embodiment 1, and is different from the embodiment 1 in that:
the air outlet holes are arranged in two rows along the wall surface of the paddle; two rows of air outlet holes are symmetrically arranged; the arrangement is shown in FIG. 2 (b);
the procedure is as in example 1;
compared with the traditional stirred tank reactor with the same volume, the average diameter of the bubbles of the gas-liquid-solid multiphase tubular reactor is reduced by more than 40 percent.
Example 3
The gas-liquid-solid multiphase tubular stirring reactor has the same structure as that of the embodiment 1, and is different from the embodiment 1 in that:
the air outlet holes are arranged in two rows along the wall surface of the paddle, and the two adjacent rows of air outlet holes are arranged in a staggered manner; the arrangement is shown in FIG. 2 (c);
the procedure is as in example 1;
compared with the traditional stirred tank reactor with the same volume, the average diameter of the bubbles of the gas-liquid-solid multiphase tubular reactor is reduced by more than 40 percent.
Example 4
The gas-liquid-solid multiphase tubular stirring reactor has the same structure as that of the embodiment 1, and is different from the embodiment 1 in that:
the air outlet holes are arranged in three rows along the wall surface of the paddle, and two adjacent rows of air outlet holes are arranged in a staggered manner; the arrangement is shown in FIG. 2 (d);
the procedure is as in example 1;
compared with the traditional stirred tank reactor with the same volume, the average diameter of the bubbles of the gas-liquid-solid multiphase tubular reactor is reduced by more than 40 percent.
Example 5
The gas-liquid-solid multiphase tubular stirring reactor has the same structure as that of the embodiment 1, and is different from the embodiment 1 in that:
the aperture of the air outlet is 100 microns; the air outlet holes are arranged into 10 rows along the wall surface of the paddle, and all the air outlet holes are uniformly distributed along the periphery of the paddle;
the procedure is as in example 1;
compared with the traditional stirred tank reactor with the same volume, the average diameter of the bubbles of the gas-liquid-solid multiphase tubular reactor is reduced by more than 40 percent.
Example 6
The gas-liquid-solid multiphase tubular stirring reactor has the same structure as that of the embodiment 1, and is different from the embodiment 1 in that:
the aperture of the air outlet is 1 micron; the air outlet holes are arranged into 20 rows along the wall surface of the paddle, and all the air outlet holes are uniformly distributed along the periphery of the paddle;
the procedure is as in example 1;
compared with the traditional stirred tank reactor with the same volume, the average diameter of the bubbles of the gas-liquid-solid multiphase tubular reactor is reduced by more than 40 percent.
Claims (1)
1. A gas-liquid-solid multiphase tubular stirring reactor comprises a tubular shell, a stirring shaft and stirring paddles; the method is characterized in that: a feed inlet is arranged above the side wall of the front end of the tubular shell, and a discharge outlet is arranged below the side wall of the rear end; the stirring shaft is assembled on the front end plate and the rear end plate of the tubular shell, is of a hollow structure, one end of the stirring shaft is assembled with the driving motor, and the other end of the stirring shaft is provided with an air inlet communicated with an internal channel of the stirring shaft; the stirring paddle is fixed on the stirring shaft, and the length of the stirring paddle is matched with the inner space of the tubular shell; the stirring paddle consists of a plurality of connecting rods and a plurality of blades, the two ends of each connecting rod are respectively connected with the stirring shaft and one blade, and the two ends of each blade are respectively connected with one connecting rod; each connecting rod and each blade are of a hollow structure, the internal channels of the blades and the internal channels of the connecting rods are communicated with each other, and the internal channel of each connecting rod is communicated with the internal channel of the stirring shaft; the wall surface of each paddle is provided with an air outlet, and the air outlet communicates the internal channel of the paddle with the inside of the tubular shell; the aperture of the air outlet is 1 micron-5 mm; the blades are of a pipeline type structure, and the air outlet holes are arranged in one row or multiple rows along the wall surfaces of the blades; when the air outlet holes are arranged in a plurality of rows, two adjacent rows of air outlet holes are symmetrically arranged or staggered; the vertical cross-sectional area of the inner channel of the stirring shaft is larger than or equal to the sum of the cross-sectional areas of all the air outlet holes; an exhaust port is arranged above the tubular shell; when the air outlet holes are arranged in one row or a plurality of rows, the distance between every two adjacent air outlet holes in each air outlet hole is equal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910535114.9A CN110193333B (en) | 2019-06-20 | 2019-06-20 | Gas-liquid-solid multiphase tubular stirring reactor |
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| CN201910535114.9A CN110193333B (en) | 2019-06-20 | 2019-06-20 | Gas-liquid-solid multiphase tubular stirring reactor |
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| CN110193333B true CN110193333B (en) | 2021-08-17 |
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| GB202005191D0 (en) * | 2020-04-08 | 2020-05-20 | Autichem Ltd | Improvement in or relating to tubular reactions |
| CN111841478A (en) * | 2020-08-31 | 2020-10-30 | 吴志学 | Novel tubular anti-coking heat polymerization equipment |
| CN112990351A (en) * | 2021-04-13 | 2021-06-18 | 昆明理工大学 | Method for non-invasively evaluating image similarity in gas-liquid-solid multiphase mixing process |
| CN115228277A (en) * | 2022-07-14 | 2022-10-25 | 武汉科技大学 | Mineralization and sequestration CO based on shale vanadium extraction tailings 2 Method (2) |
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| FR2030618A5 (en) * | 1969-11-13 | 1969-11-13 | Blachere Henri | Dispersing gases in liquids and passing them into - solution |
| CN100418883C (en) * | 2005-09-30 | 2008-09-17 | 东北大学 | Inside circumfluence superposed pipe reactor for leaching |
| CN103406050B (en) * | 2013-08-28 | 2015-09-02 | 上海森松混合技术工程装备有限公司 | A kind of high-efficiency self-suction agitating device |
| CN104437173B (en) * | 2014-12-24 | 2016-06-22 | 浙江林江化工股份有限公司 | A kind of agitating device of the gas-liquid mixed reactor of mix homogeneously |
| CN205627944U (en) * | 2016-05-12 | 2016-10-12 | 浙江绿果新材料有限公司 | Improve reation kettle of gas -liquid mixture degree of reaction |
| CN207227422U (en) * | 2017-08-09 | 2018-04-13 | 江苏元洲生物工程有限公司 | A kind of solid-state fermentation tank axle center inlet duct |
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