CN211677653U - A fluidized bed device - Google Patents

Abstract

The utility model relates to a heterogeneous technical field of flows, concretely relates to fluidized bed device, which comprises a reactor, the reactor even has air feed mechanism and feeding mechanism, air feed mechanism is used for carrying compressed air for the reactor, feeding mechanism is used for doing solid material is carried to the reactor, be equipped with a plurality of survey burets on the reactor lateral wall, survey the buret and be used for surveing fluid in the reactor. The utility model relates to a fluidized bed device, in square fluidized bed, for carrying high-pressure gas in the reactor through the mechanism of supplying gas, for carrying solid particle material in the reactor through feeding mechanism, fixed granule has the flow property under high-pressure gas's effect in the reactor, connects measuring device in the survey buret on the reactor lateral wall, observes fluidic mechanical properties and the local flow structure in the reactor in the square fluidized bed, enlargies for industrial design and provides the guide.

Description

A fluidized bed device

technical field

The utility model relates to the technical field of multiphase flow, in particular to a fluidized bed device.

Background technique

Fluidized bed, referred to as fluidized bed for short, is a reactor that uses gas or liquid to pass through a granular solid layer to make solid particles in a suspended motion state, and conduct a gas-solid phase reaction process or a liquid-solid phase reaction process. At present, the devices that can realize solid fluidization include circular fluidized bed and square fluidized bed, etc., and most designs and researches are based on circular fluidized bed. Compared with circular fluidized bed, square fluidized bed has The difference is that there are corners around the square fluidized bed, so in order to better use and improve the existing square fluidized bed, the local particle flow characteristics at the corners of the square fluidized bed should be analyzed.

In summary, there is an urgent need for a technical solution to solve the problem that in order to reasonably use and improve the existing square fluidized bed, it is necessary to change the structure of the existing square fluidized bed to control the fluid in the square fluidized bed. Technical issues for analysis of mechanical properties and local flow structures.

Utility model content

The purpose of the invention of the present utility model is: in view of the existence of the prior art, in order to reasonably use and improve the existing square fluidized bed, it is necessary to change the structure of the existing square fluidized bed to control the flow of fluid in the directional fluidized bed. The technical problem of analyzing the mechanical properties and local flow structure provides a fluidized bed device, in which the fixed particles in the reactor have flow properties under the action of high-pressure gas, and the measuring device is connected from the measuring tube on the side wall of the reactor. The observation device can better study the hydrodynamic properties and local flow structure in a square turbulent fluidized bed, thus providing guidance for industrial design.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is:

A fluidized bed device, comprising a reactor, the reactor is connected with an air supply mechanism and a feeding mechanism, the air supply mechanism is used to transport compressed air to the reactor, and the feeding mechanism is used to transport the solid material to the reactor , a number of measuring pipes are arranged on the side wall of the reactor, and the measuring pipes are used to observe the fluid in the reactor.

The utility model relates to a fluidized bed device, which transports high-pressure gas into a reactor through a gas feeding mechanism, and transports solid particulate materials into the reactor through a feeding mechanism, and the fixed particles in the reactor have flow performance under the action of the high-pressure gas, and the A measuring device is connected to the measuring tube on the side wall of the reactor to observe the mechanical properties and local flow structure of the fluid in the reactor.

As a preferred solution of the present invention, the reactor includes an expansion pipe and a riser that are arranged in sequence from top to bottom, and both the expansion pipe and the riser have a square structure. Specifically, the riser pipe and the expansion pipe are communicated through a cone section, and the feeding mechanism is communicated with the riser pipe.

As a preferred solution of the present invention, the air supply mechanism includes a first air compressor and a second air compressor, the first air compressor is used to communicate with the riser, and the second air compressor is used to communicate the expansion tube.

As a preferred solution of the present invention, a gas distributor is provided between the first air compressor and the riser, one side of the gas distributor communicates with the first air compressor, and the other side passes through several branch pipes communicate with the riser. By arranging a gas distributor between the first air compressor and the riser, the compressed air enters the riser uniformly.

As a preferred solution of the present invention, a pressure gauge is provided between the second air compressor and the expansion pipe. The pressure gauge is used to monitor whether the pressure in the fluidized bed is stagnant, so as to judge whether each pipeline of the fluidized bed and the reactor are blocked. Under normal circumstances, the reading of the pressure gauge is OPSI. When there is blockage, the pressure gauge will display the corresponding Squeeze the value.

As a preferred solution of the present invention, each branch pipe is provided with a first gas flow meter. It is convenient to monitor and control the compressed air entering the riser, and at the same time, it is convenient to collect the gas parameters entering the riser.

As a preferred solution of the present invention, a second flow meter is provided between the expansion pipe and the second air compressor. It is convenient to control the compressed air entering the expansion pipe and collect the gas parameters entering the expansion pipe.

As a preferred solution of the present invention, the riser and the expansion pipe are provided with several measurement layers along the height direction, each of the measurement layers includes four of the measurement tubes, and the four measurement tubes are respectively arranged in on the four sides of the riser or the expansion pipe.

As a preferred solution of the present invention, a cyclone separator is connected to the upper end of the expansion pipe, and the cyclone separator communicates with the riser pipe. Specifically, a gas outlet is provided at the top of the expansion pipe, and the outlet is connected to the cyclone separator through a pipeline. The gas and a small amount of solid particles enter the cyclone separator from the gas outlet, and the solid particles return to the riser under the action of the cyclone separator. The gas is discharged from the cyclone.

As a preferred solution of the present invention, the feeding mechanism is a vibrating feeder, and the vibrating feeder communicates with the riser. The vibrating feeder can transport granular materials into the riser evenly, regularly and continuously.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present utility model are:

The utility model relates to a fluidized bed device. In a square fluidized bed, high-pressure gas is transported into a reactor through a gas feeding mechanism, solid particulate materials are transported into the reactor through a feeding mechanism, and particles are fixed in the reactor in the high-pressure gas. It has flow properties under the action, and connecting the measuring device from the measuring tube on the side wall of the reactor can better study the hydrodynamic properties and local flow structure in the square turbulent fluidized bed, so as to provide guidance for industrial design.

Description of drawings

Fig. 1 is the structural representation of a kind of fluidized bed device of the present utility model;

Fig. 2 is the top view of the riser pipe in Fig. 1;

Labels in the figure: 1-reactor, 101-rising pipe, 1011-measuring pipe, 1012-gas distribution plate, 102-expansion pipe, 2-first air compressor, 3-second air compressor, 4-cyclone separation device, 5-gas distributor, 6-branch pipe, 7-first flowmeter, 8-second flowmeter, 9-pressure gauge, 10-vibration feeder.

Detailed ways

The present utility model will be described in detail below in conjunction with the accompanying drawings.

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

Example 1

As shown in FIG. 1 and FIG. 2 , a fluidized bed device of the present invention includes a reactor 1, and the reactor 1 is connected with an air supply mechanism and a feeding mechanism, and the air supply mechanism is used to deliver compressed air to the reactor 1. , the feeding mechanism is used for conveying solid materials for the reactor 1, a number of measuring tubes 1011 are arranged on the side wall of the reactor 1, the measuring tubes 1011 are connected to the reactor 1, and the measuring tubes 1011 are used for observation The fluid in the reactor 1.

Specifically, the reactor 1 includes an expansion pipe 102 and a riser pipe 101 arranged in sequence from top to bottom. The expansion pipe 102 and the riser pipe 102 are both square structures, and the space between the riser pipe 101 and the expansion pipe 102 is square. The feeding mechanism is communicated with the rising pipe 101 through a cone section, the upper end of the expansion pipe 102 is connected with a cyclone separator 4, the cyclone separator 4 communicates with the rising pipe 101, and a gas outlet is provided at the top of the expansion pipe 102, The outlet is connected to the cyclone separator 4 through a pipeline, and the gas and a small amount of solid particles enter the cyclone separator 4 from the outlet. Under the action of the cyclone separator 4, the solid particles return to the riser 101, and the gas is discharged from the cyclone separator 4. The feeding mechanism is a vibrating feeder 10, the vibrating feeder 10 is connected to the riser 101, and the vibrating feeder 10 can transport granular materials into the riser 101 uniformly, regularly and continuously.

The specific air supply mechanism includes a first air compressor 2 and a second air compressor 3, the first air compressor 2 is used to communicate with the lift 101, and the second air compressor 3 is used to communicate with all Referring to the expansion pipe 102, the high pressure gas in the riser pipe 101 makes the solid particles have a certain flow performance, and the high pressure gas in the expansion pipe 102 enhances the flow performance of the solid particles again.

Further, a gas distributor 5 is arranged between the first air compressor 2 and the riser 101 , one side of the gas distributor 5 communicates with the first air compressor 2 , and the other side passes through several branch pipes. 6. Connecting the riser 101, by arranging the gas distributor 5 between the first air compressor 2 and the riser 101, the compressed air enters the riser 101 uniformly, which is convenient for controlling and monitoring the reaction law.

Further, a gas distribution plate is arranged in the riser, and a plurality of leak holes are arranged on the gas distribution plate, and the opening rate thereof is 45%.

Further, a pressure gauge 9 is provided between the second air compressor 3 and the expansion pipe 102, and the pressure gauge 9 is used to monitor whether the pressure in the fluidized bed is held back, so as to judge each pipeline and the reactor of the fluidized bed. Whether there is blockage in 1, under normal circumstances, the reading of pressure gauge 9 is OPSI. When there is a blockage, pressure gauge 9 will display the corresponding pressure holding value.

Further, each branch pipe 6 is provided with a first gas flow meter 7 to facilitate monitoring and control of whether the compressed air entering the riser 101 is uniform, and to collect gas parameters entering the riser 101 .

Further, a second flow meter 8 is provided between the expansion pipe 102 and the second air compressor 3 to facilitate the control of the compressed air entering the expansion pipe 102 and the collection of gas parameters entering the expansion pipe 102 .

Further, several measurement layers are arranged on the riser pipe 101 and the expansion pipe 102 along the height direction, each of the measurement layers includes four of the measurement pipes 1011, and the four measurement pipes 1011 are respectively arranged in the On the four sides of the riser 101 or the expansion pipe 102, specifically, five measurement layers with different heights are arranged on the outer wall of the riser 101, and the five measurement layers are evenly arranged along the height direction of the riser 101. There are three measuring layers with different heights on the outer wall of 102, and the three measuring layers are evenly arranged along the height direction of the expansion pipe, which are used to measure the pressure in the riser 101 and the expansion pipe 102, the flow velocity of solid particles and the particle concentration.

In summary, the present utility model is a fluidized bed device. The first air compressor 2 transports high-pressure gas into the riser 101, and the vibrating feeder 10 transports solid particles into the riser 101, and the solid particles are transported in the riser. The first reaction occurs in 101, so that the solid particles have a certain flow performance, and then the movement law of the particles in the fluidized bed is studied, and then enters the expansion pipe 102. The second air compressor 2 is the expansion pipe 102 and is the expansion pipe again. The high-pressure gas, solid particles and high-pressure gas are transported for the second reaction. By connecting the measuring device in the measuring tube 1011 on the side wall of the reactor 1, it is possible to better study the hydrodynamic performance and localization of the square turbulent fluidized bed flow structure, thus providing guidance for industrial design.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (10)

1. A fluidized bed device, characterized in that, comprising a reactor (1), the reactor (1) is connected with an air supply mechanism and a feeding mechanism, and the air supply mechanism is used to transport compressed air for the reactor (1) , the feeding mechanism is used for conveying solid materials for the reactor (1), and a number of measuring tubes (1011) are arranged on the side wall of the reactor (1), and the measuring tubes (1011) are used to observe the Fluid in reactor (1). 2 . The fluidized bed device according to claim 1 , wherein the reactor ( 1 ) comprises an expansion pipe ( 102 ) and a riser pipe ( 101 ) arranged in sequence from top to bottom, and the expansion pipe ( 102) and the riser (101) are all square structures. 3. The fluidized bed device according to claim 2, wherein the air supply mechanism comprises a first air compressor (2) and a second air compressor (3), the first air compressor (2) ) is used to communicate with the riser pipe (101), and the second air compressor (3) is used to communicate with the expansion pipe (102). 4. The fluidized bed device according to claim 3, characterized in that a gas distributor (5) is arranged between the first air compressor (2) and the riser (101), and the gas One side of the distributor (5) is connected with the first air compressor (2), and the other side is connected with the riser pipe (101) through several branch pipes (6). 5. The fluidized bed device according to claim 3, wherein a pressure gauge (9) is provided between the second air compressor (3) and the expansion pipe (102). 6. The fluidized bed device according to claim 4, characterized in that, each branch pipe (6) is provided with a first gas flow meter (7). 7. The fluidized bed device according to claim 3, characterized in that a second flow meter (8) is provided between the expansion pipe (102) and the second air compressor (3). 8. The fluidized bed device according to claim 2, characterized in that, several measurement layers are arranged on the riser (101) and the expansion pipe (102) along the height direction, and each measurement layer comprises The four measuring pipes (1011) are respectively arranged on the four sides of the rising pipe (101) or the expanding pipe (102). 9 . The fluidized bed device according to claim 2 , wherein a cyclone ( 4 ) is connected to the upper end of the expansion pipe ( 102 ), and the cyclone ( 4 ) communicates with the riser ( 101 ). 10 . ). 10. The fluidized bed device according to any one of claims 2-9, wherein the feeding mechanism is a vibrating feeder (10), and the vibrating feeder (10) communicates with the riser (10). 101).

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