Fluidized bed device

Abstract

The utility model relates to a fluidized bed device, which comprises an upper tube box, an upper shell section, a lower shell section and a lower tube box, a plurality of heat exchange tubes are arranged in a shell, a support skirt is arranged below the lower tube box, a detachable gas distribution plate structure is arranged below the heat exchange tubes in the shell, and a plurality of gas distribution plates are arranged in the shell. The detachable gas distribution plate structure comprises a supporting seat, a supporting beam, a lower supporting ring, an upper limiting ring and a plurality of gas distribution plate strip blocks, the supporting seat, the lower supporting ring and the upper limiting ring are welded to the inner wall of the shell, the supporting beam is supported on the supporting seat, and the supporting beam and the supporting seat are connected through a fixing piece. The edges of a plurality of gas distribution plate strip blocks are clamped between the lower supporting ring and the upper limiting ring, the plurality of gas distribution plate strip blocks are spliced together to form a whole gas distribution plate, the gas distribution plate is supported on the supporting beam through a plurality of cushion blocks, a manhole is formed in the position, close to the gas distribution plate, of the shell, and the gas distribution plate is arranged in the manhole. Therefore, the maintenance efficiency is greatly improved.

Description

Technical field

[0001] The utility model relates to the field of reactors, in particular to a fluidized bed device. [Background Technology]

[0002] A fluidized bed, abbreviated as fluidized bed, is a reactor that uses gas or liquid to pass through a granular solid layer to put the solid particles into a suspended motion state and carry out a gas-solid phase reaction process or a liquid-solid phase reaction process.

[0003] See also Figure 1 , Figure 1 A fluidized bed device in the prior art is disclosed, comprising: an upper tube box 1', an upper cylinder section 2', a lower cylinder section 3' and a lower tube box 4', wherein the lower cylinder section 3' is provided with a plurality of heat exchange tubes 5', a first flange 6' is provided at the bottom of the lower cylinder section 3', a second flange 7' is provided above the lower tube box 4', a gas distribution plate 8' is sandwiched between the first flange 6' and the second flange 7', the first flange 6' and the second flange 7' are connected by a fixing member, and the entire device is supported on the frame by an ear seat 9'. The disadvantages of the fluidized bed device of this structure are as follows: The disadvantage is that since the gas distribution plate 8' is a whole plate structure, and the whole plate is clamped between the first flange 6' and the second flange 7', when the gas distribution plate 8' needs to be repaired, the entire lower pipe box 4' needs to be removed. Therefore, sufficient space needs to be left under the equipment to remove the lower pipe box 4'. In addition, since the gas distribution plate 8' is a whole plate structure, installation and disassembly require large lifting equipment, which is time-consuming and labor-intensive. Therefore, we are thinking about how to improve this traditional fluidized bed structure to overcome the above-mentioned defects. [Utility Model Content]

[0004] In order to solve the above problems, the purpose of the present invention is to provide a fluidized bed device which can improve maintenance efficiency and reduce maintenance costs.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a fluidized bed device, comprising: an upper tube box, an upper cylinder section, a lower cylinder section and a lower tube box, wherein the upper tube box, the upper cylinder section, the lower cylinder section and the lower tube box are welded to each other to form a shell of the fluidized bed device, wherein a plurality of heat exchange tubes are arranged in the shell, and the characteristic is that: a support skirt is provided below the lower tube box, and a detachable gas distribution plate structure is provided below the heat exchange tube in the shell, and the detachable gas distribution plate structure comprises: a support seat, a support beam, a lower support ring, an upper limit ring and several gas distribution plate blocks, the support seat, lower support ring and upper limit ring are respectively welded to the inner wall of the shell, the lower support ring is located between the support seat and the upper limit ring, the support beam is supported on the support seat and the two are connected by a fixing part, the edges of several gas distribution plate blocks are clamped between the lower support ring and the upper limit ring, several gas distribution plate blocks are assembled together to form a whole gas distribution plate, the gas distribution plate is supported on the support beam by several pads, and the shell is provided with a manhole at a position adjacent to the gas distribution plate.

[0006] Preferably, a fluidized bed device in the present invention is further configured as follows: a splicing structure is provided between each two adjacent gas distribution plate blocks, and the splicing structure includes: a first snap protrusion and a first snap groove provided on one of the gas distribution plate blocks and a second snap protrusion and a second snap groove provided on the other gas distribution plate block, the first snap protrusion cooperates with the second snap groove, and the first snap groove cooperates with the second snap protrusion.

[0007] Preferably, a fluidized bed device in the present invention is further configured as follows: the gas distribution plate block is provided with a plurality of evenly distributed through holes.

[0008] Preferably, a fluidized bed device in the present invention is further configured as follows: the support beam is an I-shaped steel.

[0009] Preferably, a fluidized bed device in the present invention is further configured as follows: the number of the support beams is two, and the two support beams are arranged in parallel.

[0010] Preferably, a fluidized bed device in the present invention is further configured as follows: the number of the support seats is four.

[0011] Preferably, a fluidized bed device in the present invention is further configured as follows: the fixing members are bolts and nuts.

[0012] Preferably, a fluidized bed device in the present invention is further configured as follows: the support seat, support beam, lower support ring, upper limit ring, gas distribution plate block, and pad are all made of carbon steel material.

[0013] Preferably, a fluidized bed device in the present invention is further configured such that: a plurality of pads are evenly arranged.

[0014] Preferably, a fluidized bed device in the present invention is further configured as follows: the manhole is a waist-shaped manhole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the present invention designs the gas distribution plate as a multi-piece assembled structure, so that when the gas distribution plate is inspected, each gas distribution plate strip can be taken in and out of the manhole for inspection, thereby avoiding the use of large lifting equipment as in the prior art, thereby greatly improving the inspection efficiency and reducing the inspection cost. In addition, the present invention designs the gas distribution plate as a multi-piece assembled structure, so that the corresponding shell can also be designed as an integrated welded structure, and the support structure of the shell can also be designed as a skirt support structure, thereby effectively reducing the frame cost of the equipment support while improving the strength of the shell.

Brief Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of a fluidized bed device in the prior art.

[0017] Figure 2 It is a structural schematic diagram of the fluidized bed device in the utility model.

[0018] Figure 3 This is a schematic front view of the detachable gas distribution plate structure in the present invention.

[0019] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0020] Figure 5 This is a top view of the detachable gas distribution plate structure in the utility model

[0021] Figure 6 It is a cross-sectional schematic diagram of several gas distribution plate blocks in the present invention.

[0022] Figure 7 It is a cross-sectional schematic diagram of two adjacent gas distribution plate blocks in the present invention.

[0023] Figure 1 Middle: 1`, upper pipe box, 2`, upper cylinder section, 3`, lower cylinder section, 4`, lower pipe box, 5`, heat exchange tube, 6`, first flange, 7`, second flange, 8`, gas distribution plate, 9`, ear seat.

[0024] Figures 2 to 7Middle: 1. Upper pipe box, 10. Gas pre-distributor, 11. Feed port, 12. Discharge port, 2. Upper cylinder section, 3. Lower cylinder section, 4. Lower pipe box, 5. Heat exchange tube, 6. Support skirt, 7. Removable gas distribution plate structure, 70. Support seat, 71. Support beam, 72. Lower support ring, 73. Upper limit ring, 74. Gas distribution plate strip block, 740. Through hole, 741. Pad, 75. Fixing part, 76. First snap-on protrusion, 77. First snap-on groove, 78. Second snap-on protrusion, 79. Second snap-on groove, 8. Manhole. [Specific implementation method]

[0025] The fluidized bed device of the present invention is further described in detail below through specific embodiments.

[0026] Ginseng Figures 2 to 7 As shown, a fluidized bed device comprises: an upper pipe box 1, an upper cylinder section 2, a lower cylinder section 3 and a lower pipe box 4, the upper pipe box 1, the upper cylinder section 2, the lower cylinder section 3 and the lower pipe box 4 are welded to each other to form the shell of the fluidized bed device, a gas pre-distributor 10 and a feed port 11 are provided below the shell 1, a discharge port 12 is provided above the shell, a plurality of heat exchange tubes 5 are provided in the shell, the free ends of the heat exchange tubes 5 pass through the shell and extend out of the shell, a support skirt 6 is provided below the lower pipe box 4, a detachable gas distribution plate structure 7 is provided below the heat exchange tube 5 in the shell, the detachable gas distribution plate structure 7 comprises: a support seat 70, a support beam 71, a lower support ring 72, an upper limit ring 73 and a plurality of gas distribution plate strip blocks 74, in this embodiment, the number of the gas distribution plate strip blocks 74 is seven, and each gas distribution plate strip block 74 is provided with a plurality of evenly distributed through holes 740 for gas to pass through.

[0027] The support seat 70, the lower support ring 72 and the upper limit ring 73 are respectively welded to the inner wall of the shell. The lower support ring 72 is located between the support seat 70 and the upper limit ring 73. The support beam 71 is supported on the support seat 70 and the two are connected by a fixing member 75. In this embodiment, the fixing member 75 is a bolt and a nut, and the support beam 71 is an I-shaped steel. There are two support beams 71, and the two support beams 71 are arranged in parallel. There are four support seats 70. Of course, in other embodiments, the number of support beams 71 and support seats 70 can be determined according to specific needs. The edges of the seven gas distribution plate blocks 74 are clamped between the lower support ring 72 and the upper limit ring 73, and the seven gas distribution plate blocks 74 are assembled together to form a whole gas distribution plate. In this embodiment, they are spliced ​​as follows: a splicing structure is provided between each two adjacent gas distribution plate blocks 74, and the splicing structure includes: a first snap protrusion 76 and a first snap groove 77 provided on one of the gas distribution plate blocks 74 and a second snap protrusion 78 and a second snap groove 79 provided on the other gas distribution plate block 74, the first snap protrusion 76 cooperates with the second snap groove 79, and the first snap groove 77 cooperates with the second snap protrusion 78.

[0028] The gas distribution plate is supported on the support beam 71 by a plurality of pads 741, which are evenly arranged. The pads 741 are provided because if the gas distribution plate is directly supported on the support beam 71, the contact area between the gas distribution plate and the support beam 71 will inevitably be large, which will cause many through holes 740 on the gas distribution plate to be blocked, thereby affecting the flow of gas. However, the utility model provides a plurality of pads 741 between the gas distribution plate and the support beam 71, so that only the through holes in contact with the pads 741 are blocked, and the remaining through holes are not blocked, thereby greatly improving the gas flow efficiency. The support seat 70, support beam 71, lower support ring 72, upper limit ring 73, gas distribution plate strip block 74, and pads 741 are all made of carbon steel and therefore have good corrosion resistance. The shell is provided with a manhole 8 at a position adjacent to the gas distribution plate. In the present embodiment, the manhole 8 is a waist-shaped manhole. When the gas distribution plate needs to be inspected, the worker disassembles the gas distribution plate into gas distribution plate strip blocks 74 in the shell, and then takes each gas distribution plate strip block 74 out of the manhole 8 for inspection. After the inspection is completed, the gas distribution plate strip blocks 74 are taken from the manhole 8 into the shell for assembly into a whole gas distribution plate.

[0029] The fluidized bed apparatus of this invention operates as follows: gas enters through a feed port 11 at the bottom of the housing, is evenly distributed upward through a gas pre-distributor 10, then passes through a plurality of through-holes 740 in a gas distribution plate, enters the catalyst layer, and reacts with the catalyst before exiting through a discharge port 12 at the top of the housing. Cooling water flows through the heat exchange tubes 5, and heat exchange through the heat exchanger 5 removes heat generated during the gas reaction.

[0030] In summary, the utility model designs the gas distribution plate as a multi-piece assembled structure, so that when the gas distribution plate is inspected, each gas distribution plate strip can be taken in and out of the manhole for inspection, thereby avoiding the use of large lifting equipment as in the prior art, thereby greatly improving the inspection efficiency and reducing the inspection cost. In addition, the utility model designs the gas distribution plate as a multi-piece assembled structure, and the corresponding shell can also be designed as an integrated welded structure, and the support structure of the shell can also be designed as a skirt support structure, thereby effectively reducing the frame cost of the equipment support while improving the strength of the shell.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application, and are not intended to limit the present invention. It should be noted that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A fluidized bed apparatus comprising: The top of the gas distribution plate is connected with the support of the gas distribution plate, and the bottom of the gas distribution plate is connected with the support of the gas distribution plate.

2. A fluidized bed apparatus according to claim 1, characterized in that: A splicing structure is provided between each two adjacent gas distribution plate blocks, and the splicing structure includes: a first snap protrusion and a first snap groove provided on one of the gas distribution plate blocks and a second snap protrusion and a second snap groove provided on the other gas distribution plate block, the first snap protrusion cooperates with the second snap groove, and the first snap groove cooperates with the second snap protrusion.

3. A fluidized bed apparatus according to claim 1, characterized in that: The gas distribution plate strip block is provided with a plurality of evenly distributed through holes.

4. A fluidized bed apparatus according to claim 1, characterized in that: The support beam is an I-shaped steel.

5. The fluidized bed apparatus according to claim 1, wherein: There are two support beams, and the two support beams are arranged in parallel.

6. A fluidized bed apparatus according to claim 1, characterized in that: The number of the support bases is four.

7. The fluidized bed apparatus according to claim 1, wherein: The fixing parts are bolts and nuts.

8. The fluidized bed apparatus according to claim 1, wherein: The support seat, support beam, lower support ring, upper limit ring, gas distribution plate block and cushion block are all made of carbon steel.

9. The fluidized bed apparatus according to claim 1, wherein: Several pads are evenly arranged.

10. The fluidized bed apparatus according to claim 1, wherein: The manhole is a waist-shaped manhole.

Images