CN114307873B - Organosilicon fluidized bed reactor capable of preventing silicon powder accumulation - Google Patents
Organosilicon fluidized bed reactor capable of preventing silicon powder accumulation Download PDFInfo
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- CN114307873B CN114307873B CN202210007943.1A CN202210007943A CN114307873B CN 114307873 B CN114307873 B CN 114307873B CN 202210007943 A CN202210007943 A CN 202210007943A CN 114307873 B CN114307873 B CN 114307873B
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- grid
- heat exchange
- air
- distribution plate
- air inlet
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000011863 silicon-based powder Substances 0.000 title claims abstract description 25
- 238000009825 accumulation Methods 0.000 title claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 31
- 239000000428 dust Substances 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 235000013312 flour Nutrition 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000004939 coking Methods 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 18
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229940050176 methyl chloride Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses an organosilicon fluidized bed reactor for preventing silicon powder accumulation, which comprises a cylinder body, a plurality of grids arranged in the cylinder body, heat exchange pipes arranged in the cylinder body through the grids and a distribution plate arranged below the heat exchange pipes, wherein a distribution plate air inlet device capable of intermittently pressurizing and air inlet into the cylinder body is distributed on the distribution plate, a floating ring is sleeved on the heat exchange pipes in a sliding manner, and branches contacted with adjacent heat exchange pipes are arranged on the floating ring; the grid is hollow, the grid is provided with a first air inlet communicated with the hollow part of the grid, the first air inlet is led out of the cylinder body, the grid dust remover communicated with the hollow part of the grid is arranged at a position, close to the heat exchange tube, on the grid, and the periphery of the grid dust remover is provided with a first air outlet. The outer wall of the heat exchange tube is swept through branches on the floating ring, so that silicon powder is prevented from accumulating on the heat exchange tube; through ventilation in the hollow grille and blowing by the air outlet of the grille dust remover, the silicon powder is prevented from accumulating on the grille. Preventing coking and improving the reaction efficiency of the fluidized bed.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to an organosilicon fluidized bed reactor.
Background
One of the key devices for organosilicon production is a synthesis reactor, and at present, a reactor between a fluidized bed and a fixed bed is mainly adopted in the organosilicon reactor, and is commonly known as a fluidized bed reactor in the industry. Because the silicon powder is solid, the continuous feeding of the silicon powder is difficult, and under the normal condition, the silicon powder is fed into the reactor once, and the chloromethane gas is continuously introduced from the bottom of the reactor.
In the reaction process, silicon powder particles can be gradually reduced, silicon powder is easy to accumulate on the heat exchange tube and the grille, so that coking phenomenon occurs, and blocked sinter can obstruct the passing of fluid, and the production efficiency is seriously affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing an organosilicon fluidized bed reactor capable of preventing silicon powder from accumulating, which can automatically clean silicon powder accumulated on a heat exchange tube and a grid by using chloromethane gas introduced into a cylinder, prevent coking and improve the reaction efficiency of the fluidized bed.
The invention is realized by the following technical scheme:
an organosilicon fluidized bed reactor for preventing silicon powder accumulation comprises a cylinder body, a plurality of grids arranged in the cylinder body, heat exchange tubes arranged in the cylinder body through the grids and a distribution plate arranged below the heat exchange tubes, wherein a distribution plate air inlet device capable of intermittently pressurizing and air inlet to the cylinder body is distributed on the distribution plate, a floating ring is sleeved on the heat exchange tubes in a sliding manner, and branches contacted with adjacent heat exchange tubes are arranged on the floating ring; the grid is hollow, the grid is provided with a first air inlet communicated with the hollow part of the grid, the first air inlet is led out of the cylinder body, the grid dust remover communicated with the hollow part of the grid is arranged at a position, close to the heat exchange tube, on the grid, and the periphery of the grid dust remover is provided with a first air outlet.
Further: the distribution plate air inlet device comprises an air pipe penetrating through the distribution plate, and the second area of an air outlet at the upper section of the air pipe is smaller than the second area of an air inlet at the lower end of the air pipe; the upper part of the breather pipe is wrapped with an outer cylinder, the inside of the outer cylinder is communicated with the inside of the breather pipe through a through hole, a stop block is slidably arranged in the outer cylinder to block the through hole, the stop block is connected with a spring arranged on the inner wall of the outer cylinder and is elastically propped against the through hole by the spring; the upper section of the outer cylinder is provided with a third air outlet. Because the area of the air outlet on the vent pipe is smaller, the air flow rate is limited, the air pressure in the vent pipe is continuously increased, thereby pushing the stop block, opening the through hole between the outer cylinder and the vent pipe, and air flows out from the air outlet III of the outer cylinder. The air pressure is released into the cylinder body, and the floating ring is blown to float.
Further: a baffle is arranged right above the second air outlet of the vent pipe and is arranged on the vent pipe through a plurality of supporting bars. The baffle prevents silicon powder from flowing out of the cylinder body after falling into the breather pipe.
Further: and the periphery of the lower part of the vent pipe, which is close to the distribution plate, is provided with an inclined downward air outlet IV. And the gas blown out from the air outlet IV prevents silicon powder from accumulating on the distribution plate.
Further: the third air outlet is a hollow conical tube communicated with the inside of the outer cylinder, the small end of the conical tube is inclined upwards, and the inclination angle is 75-85 degrees. The conical tube can improve the air pressure of the three outlets of the air outlet and blow the floating ring upwards more effectively; the inclination of 75-85 degrees is used for enabling the air flowing out of the guide pipe to blow towards the floating ring in multiple directions, and the floating ring is better blown.
Further: a floating ring is arranged above each grid.
Further: the branches on the floating ring are made of aluminum alloy sheets. The aluminum alloy is light and easy to blow.
Further: the branches are only distributed in the half circle range of the floating ring. The ventilation is increased while reducing interference between the floating rings.
Compared with the prior art, the invention has the following advantages:
according to the invention, the floating ring on the heat exchange tube is blown by the distribution plate air inlet device for intermittently pressurizing and air inlet in the cylinder body, so that the floating ring floats up and down, and the outer wall of the heat exchange tube is swept by branches on the floating ring, so that silicon powder is prevented from accumulating on the heat exchange tube; through ventilation in the hollow grille and blowing by the air outlet of the grille dust remover, the silicon powder is prevented from accumulating on the grille. Preventing coking and improving the reaction efficiency of the fluidized bed.
The silicon powder fully reacts in the device, so that the accumulation is less, and the subsequent cleaning and maintenance time of the fluidized bed reactor is saved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a distribution plate air inlet arrangement;
FIG. 3 is a schematic view of the installation of a floating ring on a heat exchange tube;
FIG. 4 is a schematic view of the structure of the floating ring;
fig. 5 is a schematic view of the structure of the grid dust collector.
In the figure: 1. a cylinder; 2. a heat exchange tube; 3. a grid dust remover; 3.1, an air outlet I; 4. a grille; 5. an air inlet I; 6. a floating ring; 6.1, branches; 7. a distribution plate air inlet device; 8. a distribution plate; 9. a seal head; 10. a vent pipe; 10.1, an air inlet II; 10.2, a second air outlet; 11. an outer cylinder; 12. a baffle; 12.1, support bars; 13. a stop block; 14. a spring; 15. a conical tube; 16. and a fourth air outlet.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The organic silicon fluidized bed reactor for preventing silicon powder accumulation comprises a cylinder body 1, a plurality of grids 4 arranged in the cylinder body 1, heat exchange tubes 2 arranged in the cylinder body 1 through the grids 4 and a distribution plate 8 arranged below the heat exchange tubes 2, wherein a distribution plate air inlet device 7 capable of intermittently pressurizing and air inlet to the cylinder body 1 is distributed on the distribution plate 8, floating rings 6 are sleeved on the heat exchange tubes 2 in a sliding manner, floating rings 6 are arranged above each grid 4, branches 6.1 in contact with adjacent heat exchange tubes 2 are arranged on the floating rings 6, the branches 6.1 are only distributed in the half circle range of the floating rings 6, and the branches 6.1 are made of aluminum alloy sheets; the grid 4 is hollow, the grid 4 is provided with a first air inlet 5 communicated with the hollow part of the grid 4, the first air inlet 5 is led out of the cylinder body 1, the grid dust remover 3 communicated with the hollow part of the grid 4 is arranged at a position, close to the heat exchange tube 2, on the grid 4, and the periphery of the grid dust remover 3 is provided with a first air outlet 3.1. The distribution plate air inlet device 7 comprises an air pipe 10 penetrating through the distribution plate 8, and the area of a second air outlet 10.2 at the upper section of the air pipe 10 is smaller than that of a second air inlet 10.1 at the lower end of the air pipe 10; the upper part of the breather pipe 10 is wrapped with an outer cylinder 11, the inside of the outer cylinder 11 is communicated with the inside of the breather pipe 10 through a through hole, a stop block 12 is slidably arranged in the outer cylinder 11 to block the through hole, the stop block 12 is connected with a spring 14 arranged on the inner wall of the outer cylinder 11, and the stop block is elastically propped against the through hole by the spring 14; the upper section of the outer cylinder 11 is provided with an air outlet III, the air outlet III is a hollow conical tube 15 communicated with the inside of the outer cylinder 11, the small end of the conical tube 15 is inclined upwards, and the inclination angle is 75-85 degrees. A baffle 12 is arranged right above the second air outlet 10.2 of the air pipe 10, and the baffle 12 is arranged on the air pipe 10 through a plurality of supporting bars 12.1 to prevent silicon powder from flowing out of the cylinder body 1 after falling into the air pipe 10. Four inclined downward air outlets 16 are arranged around the lower part of the ventilation pipe 10 near the distribution plate 8.
The working mode of this embodiment is as follows:
after the chloromethane gas enters from the seal head 9 at the lower end of the cylinder body 1, the chloromethane gas enters the cylinder body 1 through the distribution plate air inlet device 7. When chloromethane gas passes through the distribution plate air inlet device 7, the area of the second air outlet 10.2 on the air pipe 10 is smaller, the gas flow rate is limited, the air pressure in the air pipe 10 is continuously increased, so that the stop block 13 is pushed, the through hole between the outer cylinder 11 and the air pipe 10 is opened, the gas flows out from the conical pipe 15 on the outer cylinder 11, the higher air pressure is released into the cylinder body 1, and the floating ring 6 is blown to float; the tapered tube 15 is inclined by 75-85 degrees so that the gas flowing out of the tapered tube 15 can blow towards the floating ring 6 in multiple directions, and the floating ring 6 is better blown. When the chloromethane gas flows out of the conical tube 15, the outlet air pressure is increased, and the floating ring 6 is blown upwards more effectively. After the air pressure in the vent pipe 10 is released, the stopper 13 is pushed forward by the spring 14, and again pushes against the through hole, so that the flow rate of the chloromethane gas blown into the cylinder 1 is reduced, and the floating ring 6 is lowered. Thereby, one cycle of the up-and-down movement of the floating ring 6 is completed, the steps are repeatedly and circularly carried out, the floating ring 6 continuously floats up and down, and silicon powder on the outer wall of the heat exchange tube 2 is cleaned through the branches 6.1. The chloromethane gas is discharged from the air outlet IV 16 at the lower part of the distribution plate air inlet device 7, so that the silicon powder on the distribution plate 8 is purged, and the silicon powder is prevented from accumulating on the distribution plate 8. Methyl chloride gas enters the hollow grating 4 from the first air inlet 5 and is led to the grating dust remover 3, and the air is blown by the first air outlet 3.1 of the grating dust remover 3, so that silicon powder is prevented from accumulating on the grating 4. Preventing coking and improving the reaction efficiency of the fluidized bed.
The foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (2)
1. The utility model provides an organosilicon fluidized bed reactor that silica flour is piled up, includes barrel (1), installs multichannel grid (4) in barrel (1), installs heat exchange tube (2) and distribution board (8) of installing under heat exchange tube (2) in barrel (1) through grid (4), its characterized in that: a distribution plate air inlet device (7) capable of intermittently pressurizing and air-inlet into the cylinder body is distributed on the distribution plate (8), a floating ring (6) is sleeved on the heat exchange tube (2) in a sliding way, and branches (6.1) which are in contact with the adjacent heat exchange tube (2) are arranged on the floating ring (6); the grid (4) is hollow, an air inlet I (5) communicated with the hollow part of the grid is arranged on the grid (4), the air inlet I (5) is led out of the cylinder body (1), a grid dust remover (3) communicated with the hollow part of the grid (4) is arranged at a position, close to the heat exchange tube (2), on the grid (4), and air outlets I (3.1) are distributed around the grid dust remover (3);
the distribution plate air inlet device (7) comprises an air pipe (10) penetrating through the distribution plate (8), and the area of an air outlet II (10.2) at the upper section of the air pipe (10) is smaller than that of an air inlet II (10.1) at the lower end of the air pipe (10); the upper part of the breather pipe (10) is wrapped with an outer cylinder (11), the inside of the outer cylinder (11) is communicated with the inside of the breather pipe (10) through a through hole, a stop block (13) is slidably arranged in the outer cylinder (11) to block the through hole, the stop block (13) is connected with a spring (14) arranged on the inner wall of the outer cylinder (11), and the stop block (13) is elastically propped against the through hole by the spring (14); the upper section of the outer cylinder (11) is provided with a third air outlet;
a baffle (12) is arranged right above a second air outlet (10.2) of the air pipe (10), and the baffle (12) is arranged on the air pipe (10) through a plurality of supporting bars (12.1);
four inclined downward air outlets (16) are formed around the periphery of the lower part of the ventilation pipe (10) close to the distribution plate (8);
a floating ring (6) is arranged above each grid (4);
the branches (6.1) on the floating ring (6) are made of aluminum alloy sheets;
the third air outlet is a hollow conical tube (15) communicated with the inside of the outer cylinder (11), the small end of the conical tube (15) is inclined upwards, and the inclination angle is 75-85 degrees.
2. A silicone fluidized bed reactor for preventing silicon powder accumulation as set forth in claim 1 wherein: the branches (6.1) are only distributed in the half-circle range of the floating ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210007943.1A CN114307873B (en) | 2022-01-06 | 2022-01-06 | Organosilicon fluidized bed reactor capable of preventing silicon powder accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210007943.1A CN114307873B (en) | 2022-01-06 | 2022-01-06 | Organosilicon fluidized bed reactor capable of preventing silicon powder accumulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114307873A CN114307873A (en) | 2022-04-12 |
| CN114307873B true CN114307873B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210007943.1A Active CN114307873B (en) | 2022-01-06 | 2022-01-06 | Organosilicon fluidized bed reactor capable of preventing silicon powder accumulation |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5741130A (en) * | 1992-06-05 | 1998-04-21 | Ecological Combustion I Stockholm Ab | Method and apparatus for minimizing disruption caused by depositions on a supply means for a combustion of gasification plant |
| CN1356929A (en) * | 1999-04-30 | 2002-07-03 | 英国石油化学品有限公司 | Method for feeding a liquid into a fluidised bed |
| CN204999622U (en) * | 2015-09-14 | 2016-01-27 | 中国成达工程有限公司 | Cold hydrogenation fluidized bed reactor gas distribution board |
| CN106488800A (en) * | 2014-07-16 | 2017-03-08 | 阿美科福斯特惠勒电力集团北美公司 | Grid nozzle assembly, the fluidized-bed reactor with grid nozzle assembly and the method using grid nozzle assembly |
| CN109529733A (en) * | 2018-12-04 | 2019-03-29 | 淮阴工学院 | It is a kind of with can oscillatory type baffle plate organosilicon fluidized bed reactor |
| CN110425555A (en) * | 2019-08-20 | 2019-11-08 | 代仁凤 | A kind of clean and environmental protection toxic gas VOCs high-efficient treatment device |
| CN111359548A (en) * | 2020-05-06 | 2020-07-03 | 淮阴工学院 | Fluidized bed gas distribution plate mechanism with easily-detachable blast cap |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8178051B2 (en) * | 2008-11-05 | 2012-05-15 | Stephen Michael Lord | Apparatus and process for hydrogenation of a silicon tetrahalide and silicon to the trihalosilane |
-
2022
- 2022-01-06 CN CN202210007943.1A patent/CN114307873B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5741130A (en) * | 1992-06-05 | 1998-04-21 | Ecological Combustion I Stockholm Ab | Method and apparatus for minimizing disruption caused by depositions on a supply means for a combustion of gasification plant |
| CN1356929A (en) * | 1999-04-30 | 2002-07-03 | 英国石油化学品有限公司 | Method for feeding a liquid into a fluidised bed |
| CN106488800A (en) * | 2014-07-16 | 2017-03-08 | 阿美科福斯特惠勒电力集团北美公司 | Grid nozzle assembly, the fluidized-bed reactor with grid nozzle assembly and the method using grid nozzle assembly |
| CN204999622U (en) * | 2015-09-14 | 2016-01-27 | 中国成达工程有限公司 | Cold hydrogenation fluidized bed reactor gas distribution board |
| CN109529733A (en) * | 2018-12-04 | 2019-03-29 | 淮阴工学院 | It is a kind of with can oscillatory type baffle plate organosilicon fluidized bed reactor |
| CN110425555A (en) * | 2019-08-20 | 2019-11-08 | 代仁凤 | A kind of clean and environmental protection toxic gas VOCs high-efficient treatment device |
| CN111359548A (en) * | 2020-05-06 | 2020-07-03 | 淮阴工学院 | Fluidized bed gas distribution plate mechanism with easily-detachable blast cap |
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| CN114307873A (en) | 2022-04-12 |
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Country or region after: China Address after: 223001 No.40, Chengxi Road, qingjiangpu District, Huai'an City, Jiangsu Province Applicant after: Jiangsu Kesheng Intelligent Equipment Co.,Ltd. Address before: 223001 No.40, Chengxi Road, qingjiangpu District, Huai'an City, Jiangsu Province Applicant before: JIANGSU KESHENG CHEMICAL MACHINERY Co.,Ltd. Country or region before: China |
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