CN214681631U - Anti-caking U-shaped tube organic silicon fluidized bed reactor - Google Patents
Anti-caking U-shaped tube organic silicon fluidized bed reactor Download PDFInfo
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- CN214681631U CN214681631U CN202022941242.4U CN202022941242U CN214681631U CN 214681631 U CN214681631 U CN 214681631U CN 202022941242 U CN202022941242 U CN 202022941242U CN 214681631 U CN214681631 U CN 214681631U
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- branch pipe
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 title description 8
- 239000010703 silicon Substances 0.000 title description 8
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000009826 distribution Methods 0.000 claims abstract description 40
- 229940050176 methyl chloride Drugs 0.000 claims abstract description 23
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 11
- 239000000178 monomer Substances 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 230000008676 import Effects 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 235000013312 flour Nutrition 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The utility model discloses an anti-caking U-shaped tube organosilicon fluidized bed reactor, which comprises a cylinder body, wherein the upper part of the cylinder body is provided with a jacket pre-distributor, and a plurality of sets of heat exchange components are arranged in the cylinder body; each set of heat exchange assembly comprises a heat exchange medium inlet branch pipe, a heat exchange medium outlet branch pipe and a plurality of groups of U-shaped heat exchange pipes, wherein the inlet and the outlet of each group of U-shaped heat exchange pipes are respectively communicated with the heat exchange medium inlet branch pipe and the heat exchange medium outlet branch pipe; the jacket pre-distributor comprises an inlet distribution section and an outlet distribution section, the inlet distribution section is respectively communicated with the heat exchange medium inlet and the heat exchange medium inlet branch pipe, and the outlet distribution section is respectively communicated with the heat exchange medium outlet and the heat exchange medium outlet branch pipe; and a methyl chloride gas distributor fixed on the inner wall of the cylinder is arranged below the silicon powder inlet, and the methyl chloride gas distributor is positioned above the bent pipe at the bottom of the U-shaped heat exchange pipe. The utility model discloses heat transfer medium distributes evenly, has solved the easy problem of gathering the caking in U type heat exchange tube bottom return bend department of dust granule.
Description
Technical Field
The utility model belongs to chemical reaction equipment field relates to the performance improvement of material import and inner structure, specifically is a prevent U type pipe organosilicon fluidized bed reactor of caking.
Background
The fluidized bed is a device which drives solid particles to move like fluid by means of gas or liquid flow and simultaneously carries out reaction between the particles and the fluid, and is characterized in that the particles in the fluidized bed are in a moving state, and a bed layer in a container has an obvious interface, and the fluidized bed has a series of advantages of high heat transfer, mass transfer and chemical reaction rates, large operation flexibility, large production capacity, simple and compact structure and the like. Especially, because of the stirring of bubbles and the rapid flow of particles, the heat transfer coefficient between the bed layer and the inner soaking heat exchange surface is high, and the heat exchange of the strong heat exchange reaction is very favorable.
In the process of synthesizing the organic silicon monomer, chloromethane gas and silicon powder react violently under the action of a catalyst, a large amount of heat is released, the reaction heat is taken out timely and uniformly, the temperature distribution in the fluidized bed is kept stable and balanced, and the method has important effects of improving the yield of the organic silicon monomer and inhibiting side reactions.
The heat exchange tube bundle of the currently used organosilicon fluidized bed reactor mainly adopts a single-tube structure and a sleeve-type structure, and the heat exchange tube of the single-tube structure mainly adopts a U-shaped tube structure, so that the heat exchange tube bundle has the advantages of large heat exchange area, high operation stability and the like, and is widely applied in the industry. However, the connection of the heat exchange tubes is realized by the U-shaped bend of the U-shaped tube fluidized bed reactor, so that the aggregation of catalyst or silicon powder particles is easily caused in the dense area of the U-shaped bend, the agglomeration is formed, and the product yield and the long-period operation of the reactor are influenced.
In order to solve the caking problem, the domestic developed U-shaped tube fluidized bed reactor is taken as technical improvement, but still has the defects, such as the application of novel patents 201320431357.6 and 201821792172.7, a plurality of gas distribution tubes are respectively arranged at the bottom, the middle part or the upper part of the reactor, the advantages are that the gas distribution is enhanced and the particle caking is inhibited, but the defects are that a plurality of distributors put high requirements on the distribution of the fluidized gas and the operation difficulty of the reactor, and simultaneously, the cost of pipeline arrangement, equipment maintenance and operation is correspondingly increased by a plurality of gas inlet tubes.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prevent U type pipe organosilicon fluidized bed reactor of caking for solve among the prior art because the curved dust that leads to of U type gathers and caking scheduling problem, improve the stability and the economic nature of device operation.
In order to realize the utility model discloses an aim at, adopt following technical scheme:
the anti-caking U-shaped tube organosilicon fluidized bed reactor comprises a cylinder body, wherein the bottom of the cylinder body is provided with a chloromethane gas inlet, the lower part of the cylinder body is provided with a silicon powder inlet, the top of the cylinder body is provided with a crude monomer gas phase outlet, two sides of the upper part of the cylinder body are provided with a heat exchange medium inlet and a heat exchange medium outlet, the upper part of the cylinder body is provided with a jacket pre-distributor, and a plurality of sets of heat exchange assemblies are arranged in the cylinder body; each set of heat exchange assembly comprises a heat exchange medium inlet branch pipe, a heat exchange medium outlet branch pipe and a plurality of sets of U-shaped heat exchange pipes, wherein the inlet and the outlet of each set of U-shaped heat exchange pipe are respectively communicated with the heat exchange medium inlet branch pipe and the heat exchange medium outlet branch pipe; the jacket pre-distributor comprises an inlet distribution section and an outlet distribution section, the inlet distribution section is respectively communicated with the heat exchange medium inlet and the heat exchange medium inlet branch pipe, and the outlet distribution section is respectively communicated with the heat exchange medium outlet and the heat exchange medium outlet branch pipe; and a methyl chloride gas distributor fixed on the inner wall of the cylinder is arranged below the silicon powder inlet, and the methyl chloride gas distributor is positioned above the bent pipe at the bottom of the U-shaped heat exchange pipe.
In order to further realize the purpose of the utility model, the following technical scheme can also be adopted:
according to the anti-caking U-shaped tube organosilicon fluidized bed reactor, the jacket pre-distributor is arranged on the outer side of the cylinder, and the inlet distribution section and the outlet distribution section are annular cavities which are buckled relatively.
According to the anti-caking U-shaped tube organic silicon fluidized bed reactor, each set of heat exchange component is provided with the heat exchange medium inlet branch tube and the heat exchange medium outlet branch tube in parallel, one end of each of the heat exchange medium inlet branch tube and the heat exchange medium outlet branch tube is respectively connected and fixed with the inlet distribution section and the outlet distribution section, and the other end of each of the heat exchange medium inlet branch tube and the heat exchange medium outlet branch tube is sealed.
According to the anti-caking U-shaped tube organic silicon fluidized bed reactor, the distance between the heat exchange medium inlet branch pipe and the heat exchange medium outlet branch pipe can be adjusted.
According to the anti-caking U-shaped tube organic silicon fluidized bed reactor, the bottom and/or the side surface of the heat exchange medium inlet branch tube and the heat exchange medium outlet branch tube are/is provided with medium flow ports, and the medium flow ports are matched with the inlet and the outlet of the U-shaped heat exchange tube.
The U-shaped tube organosilicon fluidized bed reactor with the uniformly distributed heat exchange media is characterized in that the methyl chloride gas distributor is a flat plate distributor.
The U-shaped tube organosilicon fluidized bed reactor with the uniformly distributed heat exchange media is characterized in that more than 3 sets of heat exchange components are arranged in the cylinder.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a methyl chloride gas distributor adopts the plate structure, the U type heat exchange tube bottom return bend of U type heat exchange tube, and the U type is bent to extend to below the methyl chloride gas distributor promptly, with silica flour and the gaseous reaction zone under the catalytic action of methyl chloride, promotes to methyl chloride gas distributor more than to avoid the dust granule to gather in U type heat exchange tube bottom return bend department, solve the caking problem that leads to from this.
The utility model discloses can guarantee that heat transfer medium is evenly arranged, utilize the increase heat transfer area of U type heat exchange tube maximize, be favorable to the reaction heat in time, evenly take out, guarantee in the fluidized bed temperature distribution's stability and equilibrium, improve organosilicon monomer yield, restrain the side reaction. The utility model discloses a rational in infrastructure, working property are stable, make things convenient for equipment, pipeline arrangement and maintenance, operation safety in utilization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the jacket predistributor and heat exchange assembly of FIG. 1;
fig. 3 is a schematic structural view of the U-shaped heat exchange tube in fig. 1.
Reference numerals: 1-cylinder, 11-chloromethane gas inlet, 12-silicon powder inlet, 13-heat exchange medium outlet, 14-heat exchange medium inlet, 15-crude monomer gas phase outlet and 16-chloromethane gas distributor; 21-inlet distribution section, 22-outlet distribution section; 3-heat exchange medium outlet branch pipe, 31-first outlet branch pipe, 32-second outlet branch pipe, 33-third outlet branch pipe, 34-fourth outlet branch pipe, 35-fifth outlet branch pipe; 4-heat exchange medium inlet branch pipe, 41-first inlet branch pipe, 42-second inlet branch pipe, 43-third inlet branch pipe, 44-fourth inlet branch pipe and 45-fifth inlet branch pipe; 5-U type heat exchange tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1-3, the U-tube organosilicon fluidized bed reactor with uniformly distributed heat exchange media disclosed in this embodiment is shaped as a sealed cylinder 1 with a cavity inside, a methyl chloride gas inlet 11 is formed at the bottom of the cylinder 1, a crude monomer gas phase outlet 15 is formed at the top, a silicon powder inlet 12 is formed at the lower part, and a heat exchange medium inlet 14 and a heat exchange medium outlet 13 are formed at both sides of the upper part; the upper part of the cylinder body 1 is provided with a jacket pre-distributor, and a plurality of sets of heat exchange assemblies are arranged in the cylinder body 1.
The heat exchange assembly in this embodiment is provided with 5 sets, sets up many sets of heat exchange assemblies and increases heat transfer area simultaneously also can be better carry out evenly distributed with heat transfer medium, absorbs the heat that releases when methyl chloride gas reacts with silicon, in time, evenly takes out the reaction heat to and keep the stability and the equilibrium of temperature distribution in the fluidized bed.
As shown in fig. 2 and 3, each set of heat exchange assembly in this embodiment includes a heat exchange medium inlet branch pipe 4, a heat exchange medium outlet branch pipe 3, and a plurality of U-shaped heat exchange pipes, and an inlet and an outlet of each U-shaped heat exchange pipe 5 are respectively communicated with the heat exchange medium inlet branch pipe 4 and the heat exchange medium outlet branch pipe 3. The heat exchange medium outlet branch pipes 3 of the 5 sets of heat exchange assemblies are respectively a first outlet branch pipe 31, a second outlet branch pipe 32, a third outlet branch pipe 33, a fourth outlet branch pipe 34 and a fifth outlet branch pipe 35; the heat exchange medium inlet branch pipes 4 corresponding to the heat exchange medium inlet branch pipes are respectively a first inlet branch pipe 41, a second inlet branch pipe 42, a third inlet branch pipe 43, a fourth inlet branch pipe 44 and a fifth inlet branch pipe 45.
The heat exchange medium inlet branch pipe 4 and the heat exchange medium outlet branch pipe 3 are distributed in parallel and are used as a support beam to fix and support the U-shaped heat exchange pipe 5; and secondly, the uniform distribution of heat exchange media in the U-shaped heat exchange tubes 5 is realized. Because barrel 1 is mostly circular structure, for the maximize and the rational arrangement that realize U type heat exchange tube 5 quantity, heat transfer medium import branch pipe 4, heat transfer medium export branch pipe 3 quantity are corresponding, and each heat transfer medium import branch pipe 4, heat transfer medium export branch pipe 3 adopt to stagger to arrange in many sets of heat exchange assemblies simultaneously to guarantee heat transfer medium's heat absorption effect.
The heat exchange medium inlet branch pipe 4 and the heat exchange medium outlet branch pipe 3 in each set of heat exchange assembly are arranged in parallel on the cross section of the cylinder body 1, one end of each of the heat exchange medium inlet branch pipe 4 and the heat exchange medium outlet branch pipe 3 is fixedly connected with the inlet distribution section 21 and the outlet distribution section 22 respectively, and the other end of each of the heat exchange medium inlet branch pipe 4 and the heat exchange medium outlet branch pipe 3 is closed. The distance between the heat exchange medium inlet branch pipe 4 and the heat exchange medium outlet branch pipe 3 can be adjusted. The bottom and/or the side surface of the heat exchange medium inlet branch pipe 4 and the heat exchange medium outlet branch pipe 3 are/is provided with medium flow openings, and the medium flow openings are matched with the inlet and the outlet of the U-shaped heat exchange pipe 5.
With continued reference to fig. 2, the jacket predistributor of the present embodiment is installed outside the upper portion of the cylinder 1, and includes an inlet distribution section 21 and an outlet distribution section 22, the inlet distribution section 21 is respectively communicated with the heat exchange medium inlet 14 and the heat exchange medium inlet branch pipe 4, and the outlet distribution section 22 is respectively communicated with the heat exchange medium outlet 13 and the heat exchange medium outlet branch pipe 3; the inlet distribution section 21 and the outlet distribution section 22 are annular cavities which are buckled relatively.
A methyl chloride gas distributor fixed on the inner wall of the cylinder body is arranged below the silicon powder inlet, and the methyl chloride gas distributor is positioned above the bent pipe at the bottom of the U-shaped heat exchange pipe.
The methyl chloride gas distributor 16 is of a flat plate structure, a bent pipe is arranged at the bottom of the U-shaped heat exchange pipe, namely the U-shaped bent pipe extends to the position below the methyl chloride gas distributor 16, and a reaction area of silicon powder and methyl chloride gas under the action of a catalyst is lifted to the position above the methyl chloride gas distributor 16, so that dust particles are prevented from being gathered at the bent pipe at the bottom of the U-shaped heat exchange pipe, and the problem of agglomeration caused by the dust particles is solved. And holes or other gas distribution structures are arranged in the area of the flat plate except the U-shaped heat exchange tubes to uniformly distribute the chloromethane gas.
The utility model discloses during operation, silica flour is gone into barrel 1 behind the extension pipe by silica flour import 12 or increase, and methyl chloride gas gets into barrel 1 through methyl chloride gas distributor 16 from methyl chloride gas import 11, reacts with silica flour under the catalyst effect and generates the crude monomer of organosilicon, and emits a large amount of heats, and the crude monomer of organosilicon that the reaction generated and unreacted methyl chloride gas pass the heat transfer subassembly on upper portion, leave barrel 1 by crude monomer gas phase export 15; the heat exchange medium enters the inlet distribution section 21 of the jacket pre-distributor from the heat exchange medium inlet 14, is distributed to the heat exchange medium inlet branch pipe 4, then enters the U-shaped heat exchange pipe 5, is converged to the heat exchange medium outlet branch pipe 3 after heat exchange, enters the outlet distribution section 22 on the other side, and leaves the barrel 1 through the heat exchange medium outlet 13. The heat exchange medium flows from the top to the bottom of the U-shaped heat exchange tube 5, flows reversely to the top after reaching the U-shaped bend at the bottom, and absorbs heat in the flowing process, so that the reaction heat is timely and uniformly taken out, and the stability and the balance of the temperature distribution in the fluidized bed are kept.
The utility model discloses rational in infrastructure, working property are stable, make things convenient for equipment, pipeline to arrange and overhaul, operation safety in utilization.
The technical contents not described in detail in the present invention are all known techniques.
Claims (7)
1. The anti-caking U-shaped tube organosilicon fluidized bed reactor comprises a cylinder body and is characterized in that the bottom of the cylinder body is provided with a chloromethane gas inlet, the lower part of the cylinder body is provided with a silicon powder inlet, the top of the cylinder body is provided with a crude monomer gas phase outlet, the two sides of the upper part of the cylinder body are provided with a heat exchange medium inlet and a heat exchange medium outlet, the upper part of the cylinder body is provided with a jacket pre-distributor, and a plurality of sets of heat exchange components are arranged in the cylinder body; each set of heat exchange assembly comprises a heat exchange medium inlet branch pipe, a heat exchange medium outlet branch pipe and a plurality of sets of U-shaped heat exchange pipes, wherein the inlet and the outlet of each set of U-shaped heat exchange pipe are respectively communicated with the heat exchange medium inlet branch pipe and the heat exchange medium outlet branch pipe; the jacket pre-distributor comprises an inlet distribution section and an outlet distribution section, the inlet distribution section is respectively communicated with the heat exchange medium inlet and the heat exchange medium inlet branch pipe, and the outlet distribution section is respectively communicated with the heat exchange medium outlet and the heat exchange medium outlet branch pipe; and a methyl chloride gas distributor fixed on the inner wall of the cylinder is arranged below the silicon powder inlet, and the methyl chloride gas distributor is positioned above the bent pipe at the bottom of the U-shaped heat exchange pipe.
2. The anti-caking U-tube organosilicon fluidized bed reactor as claimed in claim 1, wherein the jacket predistributor is installed outside the cylinder, the inlet distribution section and the outlet distribution section are annular cavities which are buckled relatively.
3. The anti-caking U-shaped tube organosilicon fluidized bed reactor according to claim 1, wherein the heat exchange medium inlet branch tube and the heat exchange medium outlet branch tube in each set of heat exchange assembly are arranged in parallel, one end of the heat exchange medium inlet branch tube and one end of the heat exchange medium outlet branch tube are respectively connected and fixed with the inlet distribution section and the outlet distribution section, and the other end of the heat exchange medium inlet branch tube and the other end of the heat exchange medium outlet branch tube are closed.
4. The anti-caking U-tube organosilicon fluidized bed reactor as claimed in claim 3, wherein the distance between the heat exchange medium inlet branch pipe and the heat exchange medium outlet branch pipe can be adjusted.
5. The anti-caking U-shaped tube organosilicon fluidized bed reactor as claimed in claim 1, wherein the bottom and/or side of the heat exchange medium inlet branch tube and the heat exchange medium outlet branch tube is/are provided with medium flow ports, and the medium flow ports are matched with the inlet and the outlet of the U-shaped heat exchange tube.
6. The anti-caking U-tube silicone fluidized bed reactor according to claim 1, wherein the methyl chloride gas sparger is a flat plate sparger.
7. The anti-caking U-tube organosilicon fluidized bed reactor as claimed in claim 1, wherein more than 3 sets of heat exchange assemblies are arranged in the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022941242.4U CN214681631U (en) | 2020-12-10 | 2020-12-10 | Anti-caking U-shaped tube organic silicon fluidized bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022941242.4U CN214681631U (en) | 2020-12-10 | 2020-12-10 | Anti-caking U-shaped tube organic silicon fluidized bed reactor |
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| Publication Number | Publication Date |
|---|---|
| CN214681631U true CN214681631U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022941242.4U Active CN214681631U (en) | 2020-12-10 | 2020-12-10 | Anti-caking U-shaped tube organic silicon fluidized bed reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214681631U (en) |
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- 2020-12-10 CN CN202022941242.4U patent/CN214681631U/en active Active
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