CN201752586U - Supergravity rotating bed with coil-pipe type rotating liquid distributor - Google Patents

Abstract

The utility model relates to a super-gravity rotating bed with a coil-type rotating liquid distributor, comprising a shell, a rotating shaft, a high-speed rotating rotor and a coil-type liquid distributor. A cylindrical rotating bed is arranged in the middle of the coil-type rotating liquid distributor. Hollow feed trough, with an annular retaining ring above the feed trough; the feed trough is connected to the liquid inlet, the feed trough is connected to the main pipe, and the main pipe is connected to the multi-layer coil pipes arranged at intervals through branch pipes to form a liquid Channel; the coils are distributed in multiple layers parallel to the axial direction of the rotating shaft, and a certain axial distance is maintained between the coils. The coils are provided with liquid outlet holes corresponding to the inner edge of the rotor. The beneficial effects of the utility model are as follows: 1. The utility model adopts a coil type liquid distribution, forming a good initial axial and circumferential distribution of the liquid; 2. The mass transfer efficiency of the rotating bed is improved; 3. The structure is simpler , Compact and reasonable, the equipment is easy to manufacture and install.

Description

High-gravity rotating bed with coil-type rotating liquid distributor

technical field

The utility model relates to the field of high-gravity rotary beds, in particular to a high-gravity rotary bed with a coil-type rotating liquid distributor.

Background technique

Hypergravity field technology is a breakthrough technology that enhances transfer and multiphase reaction processes. Utilizing the highly enhanced mass transfer process and micro-mixing process characteristics in a high-gravity environment, the chemical tower equipment up to tens of meters can be replaced by a high-gravity machine less than two meters high, so the high-gravity rotating bed is known as the chemical equipment. The "transistor". Most of the existing rotary beds are fixed liquid distribution methods, that is, the liquid distributor is connected with the casing or other fixed supports, the liquid inlet pipe is stationary, and the liquid is sprayed through the liquid distribution pipe of the liquid distributor by the pressure of the pump. The holes spray toward the inner surface of the rotor. For example, U.S. patent US4382900 and Chinese patent CN1507940A disclose a high-gravity rotating bed device in which the liquid distributor is a central liquid inlet pipe. The liquid is sent into the pipe by a pump and sprayed to the inner edge surface of the annular packing by the liquid spray hole. Chinese patent CN2221437Y discloses that two sets of fixed porous tubular liquid distributors are placed in the annular space on the inner peripheral side of the annular packing, and two different liquids are sprayed to the packing from the spray holes. Because the flow rate of the liquid is determined by the pressure of the pump and the total area of the spray hole on the liquid distributor, the flow range of the liquid distributor with a certain spray hole area is limited, and the operating flexibility is small. Chinese patents CN101254355A and CN1116125A disclose a liquid distributor in the form of rotating distribution, that is, the rotating shaft is a hollow structure and is equipped with small liquid outlet holes, the liquid enters the hollow shaft through the liquid inlet pipe, and the liquid in the rotating shaft rotates with the rotating shaft. Under the action of the action, it is sent into the packing layer through the hole on the rotating shaft. Although this kind of liquid distributor improves the operating flexibility, due to the limitation of the radius of the rotating shaft, the centrifugal force on the liquid in the hollow shaft is small, and the liquid handling capacity is small.

Chinese patent "Rotating liquid distribution type rotating bed device", patent number: CN1060415A has proposed the rotating liquid distribution type rotating bed device that the liquid distributor is fixedly connected with the rotor or parts on the rotor. The liquid is distributed by the centrifugal force generated by the rotation, which improves the operating range of the liquid flow, but this type of liquid distributor needs a dynamic sealing structure between the liquid feed pipe, the structure of the distributor is complicated, and the production and installation are troublesome; the liquid is axially distributed in the liquid distribution pipe. uneven distribution.

Chinese patents CN 101254356A and CN101254357A disclose the advantages of high mass transfer efficiency, high mass transfer efficiency, easy intermediate feed, and convenient multi-layer installation, but this type of rotary bed requires relatively high initial distribution of liquid. High, whether the liquid distribution is uniform or not directly affects the mass transfer performance of the equipment. The layer-by-layer partition distributor and stepped distributor used in this type of device can achieve the initial distribution of the liquid, but the liquid is not evenly distributed in the axial direction of the moving disk, and the void ratio of the distributor is low, so it is easy to leak in the tower. Forming the bottleneck of the gas channel, the manufacture and installation of the distributor is more troublesome.

Utility model content

The utility model aims to solve the above-mentioned shortcomings of the prior art, and provides a centrifugal force generated by rotation to distribute liquid, uniform liquid distribution, high liquid flow operating range, high void ratio, simple and compact structure, convenient manufacture and installation, and better use effect High-gravity rotating bed with coil-type rotating liquid distributor.

The technical scheme adopted by the utility model to solve its technical problems: the supergravity rotating bed with a coil-type rotating liquid distributor includes a shell, a rotating shaft, a high-speed rotating rotor and a coil-type liquid distributor. There is a gas outlet and a liquid inlet, the lower end of the housing is provided with a gas inlet and a liquid outlet, the center of the housing is provided with a rotating shaft and a stationary disk, the rotating shaft is fixedly connected with a rotor, and the rotor is fixedly connected with a coiled liquid distributor. A cylindrical hollow feeding trough is arranged in the middle of the coil type rotating liquid distributor, and there is an annular retaining ring above the feeding trough; the feeding trough communicates with the liquid inlet, the feeding trough communicates with the main pipe, and the main pipe The branch pipes are connected with the multi-layer coils arranged at intervals to form a liquid channel; the coils are distributed in multiple layers parallel to the axial direction of the rotating shaft, and a certain axial distance is maintained between the coils. The holes correspond to the inner edge of the rotor.

As a preference, the rotor and the coil-type liquid distributor are a single-layer arrangement or a multi-layer structure coaxially connected in series. There is an intermediate feeding port on the cavity, and the rotating shaft passes through the coiled liquid distributor of each layer. The static plate is fixedly connected with a drainage tube and a retaining ring for introducing the liquid on the stationary plate into the feed tank, so as to realize multi-layer The liquid flow of the structure doubles the mass transfer capacity of a single device.

Preferably, the coil-type rotating liquid distributor can be used for concentric ring rotors, packed rotors, or other types of rotors, and the coil-type rotating liquid distributor can be used for counter-flow rotors, and can also be used for for cross-flow rotors. When the rotor is a concentric ring rotor, the rotor is provided with a group of concentric and different diameter moving coils with sieve holes, and the upper end of the moving coil is sealed with a labyrinth groove with the stationary disk. When the rotor is a packed rotor, a dynamic sealing structure is provided between the upper end of the packing layer and the stationary disk, and the lower end of the packing layer is fixedly connected with the rotor.

Preferably, the diameter of the feed trough is 1 to 10 times the diameter of the rotating shaft, the diameter of the main pipe is 0.01 to 1 times the diameter of the feed trough, the diameter of the branch pipe is 0.01 to 1 times the diameter of the feed trough, and the diameter of the coil is 0.01 to 1 times the diameter of the feed trough. 0.01 to 1 times of that.

As a preference, there are 2-20 main pipes, 2-20 branch pipes, and 1-15 coil pipes. The axial distance between the coil pipes is 0.1 to 10 times the diameter of the coil pipes. Set perpendicular to the axis of the branch pipe.

As a preference, the coil is provided with 1-300 liquid outlet holes, and the coil pipe is provided with a single row of liquid outlet holes, double rows of liquid outlet holes or multiple rows of liquid outlet holes, and the double row of liquid outlet holes is provided with There is a baffle, and the upper and lower sides of the coil are symmetrically provided with evenly distributed inclined liquid outlets, and the angle between the liquid outlets is 60°.

Preferably, the liquid outlet openings on the coil are circular, oval, square, triangular and various other shapes, and the area of the liquid outlet is 0.01-2 times the cross section of the coil.

As a preference, the cylindrical feeding trough, main pipe, branch pipe and coil pipe can be metal pipes, plastic pipes, or pipe fittings of other materials, and the coil-type rotating liquid distributor can be fixed on the rotor by welding or by bolts. The fastening method is fixed on the rotor.

The beneficial effects of the utility model are: 1. What the present invention adopts is a coil type liquid distribution, forming a good initial axial and circumferential distribution of the liquid; 2. The mass transfer efficiency of the rotating bed is improved; 3. The structure is simpler, Compact and reasonable, the equipment is easy to manufacture and install.

Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

FIG. 2 is a schematic structural view of the coiled liquid distributor of Embodiment 1. FIG.

FIG. 3 is a top view structural diagram of FIG. 2 .

Fig. 4 is a schematic structural view of the double-row inclined-hole coil type liquid distributor of embodiment 2.

FIG. 5 is a schematic structural view of Embodiment 3.

FIG. 6 is a schematic structural view of Embodiment 4.

Reference signs: 1-rotating shaft, 2-housing, 3-gas inlet, 4-rotor, 5-moving coil, 6-gas outlet, 7-liquid inlet, 8-stationary disc, 9-dynamic sealing structure, 10- Liquid outlet, 11-mechanical seal, 12-coil liquid distributor, 13-feed tank, 14-ring retaining ring, 15-main pipe, 16-branch pipe, 17-coil pipe, 18-liquid outlet hole, 19- Middle feeding port, 20-baffle plate, 21-filling layer, 22-drainage tube, 23-retaining ring.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment 1: As shown in Figure 1-3, it is a single-layer concentric circle type supergravity rotating bed with a coil type rotating liquid distributor, including a housing 2, a rotating shaft 1, a high-speed rotating rotor 4 and a coil type Liquid distributor 12, the upper end of housing 2 is provided with gas outlet 6 and liquid inlet 7, the lower end of housing 2 is provided with gas inlet 3 and liquid outlet 10, the center of housing 2 is provided with rotating shaft 1 and stationary disk 8, and rotating shaft 1 is fixedly connected There is a rotor 4, and the rotor 4 is fixedly connected with the coil type liquid distributor 12. A cylindrical hollow feed trough 13 is arranged in the middle of the coil type rotating liquid distributor 12, and there is an annular retaining ring above the feed trough 13 14; the feeding tank 13 is connected with the liquid inlet 7, the feeding tank 13 is connected with the main pipe 15, and the main pipe 15 is connected with the multi-layer coil pipes 17 arranged at intervals through the branch pipe 16 to form a liquid channel; the coil pipe 17 is connected along the axis of rotation 1. Multiple layers are distributed in parallel with the axial direction, and a certain axial distance is maintained between the coiled tubes 17. The coiled tubes 17 are provided with liquid outlet holes 18 corresponding to the inner edge of the rotor 4.

The rotor 4 is a concentric ring rotor, and the rotor is provided with a group of concentric and different diameter moving coils 5 with sieve holes. The upper end of the moving coil 5 is sealed with the stationary disk 8 in a labyrinth-type slot to prevent gas short circuit and distribute The device 12 communicates with the liquid inlet 7, and a mechanical seal 11 is installed at the joint between the rotating shaft 1 and the housing 2. The lower part of the liquid inlet 7 extends into the feed tank 13, and the liquid enters the coiled liquid distributor 12 through the inlet pipe 7, and enters the coiled pipe 17 through the main pipe 15 and the branch pipe 16 under the action of centrifugal force. Under the action of centrifugal force, the liquid is sprayed out through the liquid outlet hole 18 of the coil pipe 17, forming a good initial distribution of the liquid in the axial and circumferential directions.

Working process: the gas enters the inner chamber tangentially from the gas inlet 3, and because the rotor adopts a labyrinth seal, the gas is forced to pass through the sieve holes above the concentric sieve moving coil 5 in the radial direction under the action of the pressure difference and enter the rotor, and the liquid Countercurrent contact, and finally discharged through the gas outlet 6; the liquid enters the interior of the rotor from the liquid inlet 7 through the coiled liquid distributor 12, and is thrown out under the action of centrifugal force, and the liquid is crushed into fine droplets and filaments, and flows countercurrently with the gas Contact, conduct mass transfer and heat transfer, and discharge from liquid outlet 10.

Example 2:

As shown in Figure 4: this embodiment is identical to embodiment 1 except that the liquid distributor is different from embodiment 1.

This embodiment adopts the double-row inclined-hole coil type liquid distributor as shown in Figure 4. The inclined-hole coil type liquid distributor includes a feed tank 13, a main pipe 15, a branch pipe 16, a coil pipe 17, and a coil pipe 17. Two layers of tubes are arranged in parallel in the axial direction. The upper end of the feeding trough is provided with an annular retaining ring 14. The feeding trough 13 is connected to the main pipe 15. The main pipe 15 is connected to the coil pipe 17 through the branch pipe 16. The upper and lower sides of the coil pipe 17 are arranged symmetrically. There are evenly distributed inclined liquid outlet holes 18, and the angle between the liquid outlet holes 18 is 60°; the liquid distributor is fixedly connected with the rotor 4. The liquid enters the liquid distributor 12, and under the action of centrifugal force, the liquid enters the coil pipe 17 through the main pipe 15 and the branch pipe 16. The liquid passes through the double rows of slanted holes opened in the coil 17, and is ejected obliquely upwards and downwards. After colliding with the baffle 20, the ejection direction of the liquid is perpendicular to the rotating shaft 1, thereby forming a more uniform circumferential distribution of the liquid.

Example 3:

As shown in Figure 5, it is a packing type supergravity rotating bed device with a single-layer coil type rotating liquid distributor. This embodiment is completely the same as Embodiment 1 except that the rotor and sealing structure are different from Embodiment 1. In this embodiment, the rotor 4 as shown in FIG. 4 is a stuffed rotor. A dynamic sealing structure 9 is provided between the upper end of the stuffed rotor and the stationary disk 8 . The lower end of the stuffing layer 21 is fixedly connected to the rotor 4 . After the gas and liquid are in countercurrent contact in the rotor, the gas is discharged from the gas outlet 6, and the liquid phase is discharged from the liquid outlet 10.

The liquid distributor in this embodiment is exactly the same as that in Embodiment 1, and the liquid distributor shown in Embodiment 2 can also be used.

Example 4:

As shown in Figure 6, it is a three-layer concentric counterflow supergravity rotating bed device with a coil type rotating liquid distributor, which includes a shell 2, the upper end of which is provided with a gas outlet 6 and a liquid inlet 7, and the lower end is provided with a gas outlet 6 and a liquid inlet 7. There is a liquid outlet 10 and a gas inlet 3. The center of the housing 2 is provided with a rotating shaft 1 with both ends passing through the housing. A group of rotors 4 arranged in layers from top to bottom are connected in series on the rotating shaft 1. Each layer of rotors includes The coil type liquid distributor 12 fixedly connected with the rotor, the upper end of the stationary disc 8 fixedly connected with the housing 2 is provided with a drainage tube 22 and a retaining ring 23 fixedly connected, one end of the drainage tube 22 is connected with the retaining ring 23 communicates with each other, and the lower part of the other end stretches into the feeding tank 13 of the coil type liquid distributor 12. The side of the casing 2 is provided with an intermediate feeding port 19 corresponding to the top of each stationary plate 8, and the raw material entering from the intermediate feeding port 19 can enter the distributor along the drainage pipe. The gas-liquid flow condition in each rotor is the same as that of the single-layer structure, the difference is that the gas leaving the center of the rotor will enter the outer edge of the adjacent upper rotor again, pass through the rotor in the radial direction and then enter another rotor above it; The liquid leaving the rotor of this layer and/or the liquid entering in the middle is collected by the baffle ring on the lower static plate, and then enters the coil type liquid distributor 12 of the lower rotor through the drainage pipe 21, and passes through the next layer under the action of centrifugal force After the rotor enters another layer of rotor under it. In this way, in the multi-layer rotor structure, the gas passes through each layer of rotors from bottom to top, and the liquid passes through each layer of rotors from top to bottom. The flow path of gas and liquid is extended, and the contact time and number of contacts are also increased. mass transfer capacity.

The liquid distributor in this embodiment is exactly the same as that in Embodiment 1, and the liquid distributor shown in Embodiment 2 can also be used.

The present invention takes alcohol-water as the substance system, uses the sparger of embodiment 1 to carry out the rectification experiment in the concentric circle countercurrent type high-gravity rotary bed, when the rotating speed is 1200r/min, the number of theoretical plates per meter can reach 37-40 block, the mass transfer efficiency is 5-10% higher than that of the layer-by-layer partition and ladder distributors, and the operating elasticity is 10-20% higher, and no liquid flooding phenomenon was found in the experimental range, and the entrainment phenomenon of the end fog was significantly reduced. The distribution is even and reasonable.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (8)

1. a tep reel tubular type rotary liquid distributor is high-gravity rotating bed, comprise housing (2), rotating shaft (1), high speed rotor rotated (4) and coiled liquid distribution trough (12), housing (2) upper end is provided with gas vent (6) and liquid-inlet (7), housing (2) lower end is provided with gas feed (3) and liquid outlet (10), housing (2) center is provided with rotating shaft (1) and stationary disk (8), rotating shaft (1) is fixedly connected with rotor (4), rotor (4) is fixedlyed connected with coiled liquid distribution trough (12), it is characterized in that: be provided with the feed well (13) of a cylinder type hollow shape in the middle of the described coiled rotary liquid distributor (12), there is annular retaining ring (14) feed well (13) top; This feed well (13) is connected with liquid-inlet (7), and feed well (13) is connected with being responsible for (15), is responsible for (15) and is connected with spaced multilayer coil pipe (17) by arm (16), forms fluid passage; Coil pipe (17) keeps certain axial spacing along rotating shaft (1) axially parallel distribution multilayer between the coil pipe (17), coil pipe (17) is provided with fluid hole (18), and fluid hole (18) is corresponding with the inner edge of rotor (4).

2. tep reel tubular type rotary liquid distributor according to claim 1 high-gravity rotating bed, it is characterized in that: described rotor (4) and coiled liquid distribution trough (12) are for the individual layer setting or with the sandwich construction of tandem shafts, housing (2) is separated into upper cavity, multilayer middle chamber and lower chamber by stationary disk (8), have intermediate feed mouth (19) on the middle chamber, each layer coiled liquid distribution trough (12) is passed in rotating shaft (1), and stationary disk (8) is gone up fixedly connected drainage tube (22) and the back-up ring (23) of the liquid on the stationary disk being introduced feed well that be useful on.

3. tep reel tubular type rotary liquid distributor according to claim 1 and 2 high-gravity rotating bed, it is characterized in that: described rotor (4) is the concentric turns rotor, rotor is provided with one group of concentric and diameter is different moving-coil that has sieve aperture (5), and moving-coil (5) upper end is the sealing of labyrinth type draw-in groove with stationary disk (8).

4. tep reel tubular type rotary liquid distributor according to claim 1 and 2 high-gravity rotating bed, it is characterized in that: described rotor (4) is the material filling type rotor, being provided with movable sealing structure (9) between packing layer (21) upper end and the stationary disk (8), fixedlys connected with rotor (4) in the lower end of packing layer (21).

5. tep reel tubular type rotary liquid distributor according to claim 1 high-gravity rotating bed, it is characterized in that: described feed well (13) diameter is 1～10 times of rotating shaft (1) diameter, the person in charge's (15) diameter is 0.01～1 times of feed well (13) diameter, arm (16) diameter is 0.01～1 times of feed well (13) diameter, and coil pipe (17) diameter is 0.01～1 times of arm (16) diameter.

6. tep reel tubular type rotary liquid distributor high-gravity rotating bed according to claim 1 or 5, it is characterized in that: the described person in charge (15) is provided with the 2-20 root, arm (16) is provided with the 2-20 root, coil pipe (17) is provided with the 1-15 root, axial spacing between the coil pipe (17) is 0.1～10 times of coil pipe (17) caliber, is responsible for (15) and is vertical setting with arm (16) axis.

7. tep reel tubular type rotary liquid distributor high-gravity rotating bed according to claim 1 or 5, it is characterized in that: described coil pipe (17) is provided with 1-300 fluid hole (18), and coil pipe (17) is provided with single fluid hole, double fluid hole or the fluid hole of arranging more; Double fluid hole is provided with baffle plate (20), and the bilateral symmetry up and down on the coil pipe (17) is provided with equally distributed inclination fluid hole, and the angle between the fluid hole is 60 °.

8. tep reel tubular type rotary liquid distributor according to claim 7 high-gravity rotating bed, it is characterized in that: the fluid hole of offering on the described coil pipe (17) (18) is circular, oval, square or triangle, and the area of fluid hole (18) is 0.01～2 times of coil pipe (17) cross section.

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