CN220696765U - Cracking treatment device for organic silicon high-boiling-point substances - Google Patents
Cracking treatment device for organic silicon high-boiling-point substances Download PDFInfo
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- CN220696765U CN220696765U CN202322312228.1U CN202322312228U CN220696765U CN 220696765 U CN220696765 U CN 220696765U CN 202322312228 U CN202322312228 U CN 202322312228U CN 220696765 U CN220696765 U CN 220696765U
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- 238000005336 cracking Methods 0.000 title claims abstract description 70
- 239000000126 substance Substances 0.000 title claims abstract description 48
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 14
- 229910052710 silicon Inorganic materials 0.000 title claims description 14
- 239000010703 silicon Substances 0.000 title claims description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 238000010992 reflux Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000009835 boiling Methods 0.000 claims abstract description 26
- 239000003054 catalyst Substances 0.000 claims abstract description 20
- 239000000178 monomer Substances 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000000197 pyrolysis Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- -1 amine halide Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- YGZSVWMBUCGDCV-UHFFFAOYSA-N chloro(methyl)silane Chemical compound C[SiH2]Cl YGZSVWMBUCGDCV-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KTQYJQFGNYHXMB-UHFFFAOYSA-N dichloro(methyl)silicon Chemical compound C[Si](Cl)Cl KTQYJQFGNYHXMB-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005055 methyl trichlorosilane Substances 0.000 description 1
- 239000005048 methyldichlorosilane Substances 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- SNMVRZFUUCLYTO-UHFFFAOYSA-N n-propyl chloride Chemical compound CCCCl SNMVRZFUUCLYTO-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 229920001558 organosilicon polymer Polymers 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- 239000005051 trimethylchlorosilane Substances 0.000 description 1
Abstract
The utility model relates to the technical field of organosilicon synthesis, in particular to an organosilicon high-boiling-point substance cracking treatment device which comprises a catalyst storage tank, a cracking reaction kettle, a cracking tower, a first condenser, a second condenser and a cracking reflux tank, wherein a catalyst adding pipeline is communicated between the catalyst storage tank and the cracking reaction kettle, an HCl gas inlet pipeline is communicated with the cracking reaction kettle, a high-boiling raw material inlet pipeline is communicated with the cracking reaction kettle, a crude monomer inlet pipeline is communicated between the cracking reaction kettle and the cracking tower, a first condensing pipeline is communicated between the cracking tower and the first condenser, a first condensing reflux pipeline is communicated between the first condenser and the cracking reflux tank, and a mixed liquid output pipeline is communicated with the cracking reflux tank. The utility model has reasonable and compact structure and convenient use, can fully react the high-boiling-point substances, improves the reaction rate and the enterprise benefit by the continuous production of the high-boiling-point substances by the bottom feeding, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.
Description
Technical Field
The utility model relates to the technical field of organosilicon synthesis, in particular to an organosilicon high-boiling-point substance cracking treatment device.
Background
Organosilicon compounds (including various organosilicon monomers containing Si-C bonds, silane coupling agents, organosilicon polymers and the like) are outstanding in new chemical materials due to unique performance, wide variety and strong adaptability. At present, direct method is generally adopted at home and abroad to synthesize methyl chlorosilane, and some byproducts besides target product dimethyl dichlorosilane comprise methyl trichlorosilane, trimethyl chlorosilane, methyl dichlorosilane, high-boiling substances, low-boiling substances and the like. Wherein the mass fraction of high boilers in the crude product is about 3% to 5%.
The high-boiling substance is a black mixed liquid with pungent smell and strong corrosiveness, and has a density of about 1 ∙ g/cm at normal temperature and normal pressure 3 The boiling range is 80-215 ℃, and the high-boiling-point substances contain more than 30 compounds. In China, high-boiling substances are generally used for producing organic silicon waterproof agents, organic silicon oil, organic silicon resin, defoaming agents and parting agents, and the organic silicon waterproof agents and the defoaming agents are mainly produced. Due to the market capacityOnly about one fifth of the high boiling residues can be used each year, and more factories choose to prepare the dimethyldichlorosilane by directly cracking the high boiling residues.
In the existing high-boiling-point substance cracking process, tertiary amine, tri-N-butylamine, N-dimethylformamide, N-diethylformamide, quaternary amine halide, quaternary phosphine halide and the like are adopted as catalysts for reaction, so that the process is mostly carried out in a reaction with reflux equipment and mainly comprises batch reaction. In addition to the high boiling substances, chlorides such as chloropropane, chloromethane and hydrogen chloride are sometimes used as the reactant. The reaction temperature is 70-200 deg.c and the operation pressure is less than 0.14MPa, and the cracking rate of high boiling point matter in the process is 80% and the yield of dimethyl dichlorosilane is less than 40%. Although the advantages of cracking the high-boiling substances by using the organic amine and the amine salt are mild reaction conditions, the disadvantage is that the cracking of the high-boiling substances is incomplete, and if the adding amount of the catalyst is increased, the catalyst is high in price and difficult to recycle and reuse; meanwhile, most production devices are intermittent operation devices, so that the capacity of the production devices for treating high-boiling substances is limited, and the expansion and development of enterprises are limited.
Disclosure of Invention
The utility model provides an organosilicon high-boiling-point substance cracking treatment device, which overcomes the defects of the prior art and can effectively solve the problems of incomplete cracking, low reaction rate and limited production capacity of high-boiling-point substances in the existing organosilicon production.
The technical scheme of the utility model is realized by the following measures: the utility model provides an organosilicon high boiling substance pyrolysis treatment device, including the catalyst storage tank, the pyrolysis reaction kettle, the pyrolysis tower, first condenser, second condenser and schizolysis reflux tank, fixed intercommunication has the catalyst to add the pipeline between catalyst storage tank bottom export and the first import of schizolysis reaction kettle top, fixed intercommunication has HCl gas to get into the pipeline in schizolysis reaction kettle top second import, fixed intercommunication has high boiling raw materials to get into the pipeline in schizolysis reaction kettle bottom import, fixed intercommunication has coarse monomer to get into the tower pipeline between pyrolysis reaction kettle top export and the pyrolysis tower lower part import, fixed intercommunication has first condensing pipeline between schizolysis tower top export and the import of first condenser top, fixed intercommunication has the second condensing pipeline between first condenser top export and the import of second condenser top, fixed intercommunication has the first condensing reflux pipeline between first condenser bottom export and the inlet of schizolysis reflux tank top, fixed intercommunication has mixed liquid to export pipeline in schizolysis reflux tank bottom export, fixed intercommunication has the exhaust gas line in second condenser top export.
The following are further optimizations and/or improvements to the above-described inventive solution:
and a reflux pump is fixedly arranged on the mixed liquid output pipeline.
And a condensate reflux pipeline is fixedly communicated between a mixed liquid output pipeline between the reflux pump and the mixed liquid output pipeline outlet and an inlet at the upper part of the cracking tower.
And a high-boiling-point substance return pipeline is fixedly communicated between the bottom outlet of the cracking tower and the third inlet at the top of the cracking reaction kettle.
The device also comprises a residue tank, a high-boiling-point substance discharge pipeline is fixedly communicated between the bottom outlet of the cracking reaction kettle and the top inlet of the residue tank, and a residue treatment pipeline is fixedly communicated with the lower outlet of the residue tank.
The residual liquid treatment pipeline is fixedly provided with a residual liquid pump.
The utility model has reasonable and compact structure and convenient use, can fully react the high-boiling-point substances, improves the reaction rate and the enterprise benefit by the continuous production of the high-boiling-point substances by the bottom feeding, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.
Drawings
FIG. 1 is a schematic diagram of the process flow of the utility model.
The codes in fig. 1 are respectively: 1 is a catalyst storage tank, 2 is a cracking reaction kettle, 3 is a cracking tower, 4 is a first condenser, 5 is a second condenser, 6 is a residual liquid pump, 7 is a cracking reflux tank, 8 is a catalyst adding pipeline, 9 is an HCl gas inlet pipeline, 10 is a high-boiling raw material inlet pipeline, 11 is a crude monomer inlet tower pipeline, 12 is a first condensing pipeline, 13 is a second condensing pipeline, 14 is a first condensing reflux pipeline, 15 is a second condensing reflux pipeline, 16 is a mixed liquid output pipeline, 17 is an exhaust pipeline, 18 is a condensate reflux pipeline, 19 is a high-boiling substance return pipeline, 21 is a high-boiling substance exhaust pipeline, 22 is a residual liquid tank, and 23 is a residual liquid treatment pipeline.
Detailed Description
The present utility model is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present utility model.
In the present utility model, unless otherwise specified, the devices and apparatuses used are all known and commonly used in the art.
In the present utility model, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The utility model is further described below with reference to examples and figures:
example 1: as shown in the drawing, the organic silicon high-boiling-point substance cracking treatment device comprises a catalyst storage tank 1, a cracking reaction kettle 2, a cracking tower 3, a first condenser 4, a second condenser 5 and a cracking reflux groove 7, wherein a catalyst adding pipeline 8 is fixedly communicated between the bottom outlet of the catalyst storage tank 1 and the first inlet at the top of the cracking reaction kettle 2, an HCl gas inlet pipeline 9 is fixedly communicated with the second inlet at the top of the cracking reaction kettle 2, a high-boiling raw material inlet pipeline 10 is fixedly communicated with the bottom inlet of the cracking reaction kettle 2, a crude monomer inlet pipeline 11 is fixedly communicated between the top outlet of the cracking reaction kettle 2 and the inlet at the lower part of the cracking tower 3, a first condensing pipeline 12 is fixedly communicated between the top outlet of the cracking tower 3 and the top inlet at the first condenser 4, a second condensing pipeline 13 is fixedly communicated between the top outlet of the first condenser 4 and the top inlet at the top of the cracking reflux groove 7, a first condensing reflux pipeline 14 is fixedly communicated with the bottom outlet of the second condenser 5, a second condensing reflux pipeline 15 is fixedly communicated between the bottom outlet of the second condenser 5 and the first condensing reflux pipeline 14, a mixed liquid outlet of the cracking reflux groove 7 is fixedly communicated with the top outlet of the second condenser 17.
The cracking treatment device for the organic silicon high-boiling-point substances can be further optimized or/and improved according to actual needs:
example 2: which differs from example 1 in that: as shown in fig. 1, a reflux pump 18 is fixedly mounted on the mixed liquor output line 16.
Example 3: which differs from examples 1 to 2 in that: as shown in fig. 1, a condensate return line 19 is fixedly connected between the mixed liquor output pipeline 16 between the return pump 18 and the outlet of the mixed liquor output pipeline 16 and the upper inlet of the cracking tower 3.
Example 4: which differs from examples 1 to 3 in that: as shown in figure 1, a high-boiling-point substance return pipeline 20 is fixedly communicated between the outlet at the bottom of the cracking tower 3 and the third inlet at the top of the cracking reaction kettle 2.
Example 5: which differs from examples 1 to 4 in that: as shown in figure 1, the device also comprises a residue tank 22, a high-boiling-point substance discharge pipeline 21 is fixedly communicated between the outlet at the bottom of the cracking reaction kettle 2 and the inlet at the top of the residue tank 22, and a residue treatment pipeline 23 is fixedly communicated with the outlet at the lower part of the residue tank 22.
Example 6: which differs from examples 1 to 5 in that: as shown in fig. 1, a raffinate pump 6 is fixedly mounted on the raffinate-treating line 23.
When the high-boiling-point catalyst is used, firstly, high-boiling raw materials enter from the bottom of the cracking reaction kettle 2, HCl gas enters from the top of the cracking reaction kettle 2, after a metered catalyst is added, the catalyst is mixed with high-boiling-point substances in the cracking reaction kettle 2 and reacts at a certain temperature to generate crude monomers, the crude monomers are separated by the cracking tower 3 and condensed by the first condenser 4 and the second condenser 5 in sequence, a part of reflux liquid returns to the kettle of the cracking tower 3, and after the high-boiling-point substances which are not fully reacted are separated, the high-boiling-point substances return to the cracking reaction kettle 2 again, and the high-boiling-point substances react with HCL gas again; the other part of reflux liquid is taken as a crude monomer mixture and is sent to a rectification section for treatment through a mixed liquid output pipeline 16; finally, the high-boiling-point substances which cannot react in the cracking reaction kettle 2 are discharged to a residual liquid tank 22 from the bottom of the cracking reaction kettle 2, and then are sent to a residual liquid treatment section or directly packaged by a residual liquid pump 6.
According to the requirements, the pipelines and equipment of the organic silicon high-boiling-point substance cracking treatment device can be provided with common valves, thermometers, pressure gauges and the like which are well known in the art according to the production requirements.
The utility model changes the traditional natural reflux in the production of the organic silicon into the forced reflux, the reflux quantity is controlled more stably, and the high-boiling-point substances which are not completely reacted can be fully returned to the reaction kettle again through the kettle of the cracking tower 3 to participate in the reaction again, thereby reducing the content of the high-boiling-point substances in the yield and improving the cracking rate of the high-boiling-point substances. Meanwhile, the high-boiling-point substance raw material is fed from the bottom of the cracking reaction kettle 2, and the high-boiling-point substance flowing downwards and upwards can be better dispersed by gas-phase HCL, so that the two reactants are more uniformly dispersed and more comprehensively contacted, the reaction rate is further improved, and the production capacity of the device is increased.
The technical characteristics form the embodiment of the utility model, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (8)
1. The utility model provides an organosilicon high boiling substance pyrolysis treatment device, a serial communication port, including the catalyst storage tank, the pyrolysis reaction kettle, the pyrolysis tower, first condenser, second condenser and schizolysis reflux drum, fixed intercommunication has the catalyst to add the pipeline between catalyst storage tank bottom export and the first import of schizolysis reaction kettle top, pyrolysis reaction kettle top second import fixed intercommunication has HCl gas to get into the pipeline, pyrolysis reaction kettle bottom import fixed intercommunication has high boiling raw materials to get into the pipeline, fixed intercommunication has crude monomer to get into the tower pipeline between pyrolysis reaction kettle top export and the pyrolysis tower lower part import, fixed intercommunication has first condenser pipeline between schizolysis tower top export and the import of first condenser top, fixed intercommunication has the second condenser pipeline between first condenser top export and the import of second condenser top, fixed intercommunication has first condensate reflux pipeline between first condenser bottom export and the inlet of schizolysis reflux drum top, fixed intercommunication has mixed liquid to export between second condenser bottom export and the first condensate reflux pipeline, mixed liquid export fixed intercommunication has the pyrolysis pipeline.
2. The device for cracking high-boiling-point organic silicon substances according to claim 1, wherein a reflux pump is fixedly arranged on the mixed liquor output pipeline.
3. The device for cracking high-boiling-point silicone substances according to claim 2, wherein a condensate return line is fixedly connected between the mixed liquid output line between the return pump and the mixed liquid output line outlet and the upper inlet of the cracking tower.
4. The device for cracking high-boiling-point substances of organic silicon according to claim 1, 2 or 3, wherein a high-boiling-point substance return pipeline is fixedly communicated between the bottom outlet of the cracking tower and the third inlet at the top of the cracking reaction kettle.
5. The device for cracking high-boiling-point substances of organic silicon according to claim 1, 2 or 3, further comprising a residual liquid tank, wherein a high-boiling-point substance discharge pipeline is fixedly communicated between an outlet at the bottom of the cracking reaction tank and an inlet at the top of the residual liquid tank, and a residual liquid treatment pipeline is fixedly communicated with an outlet at the lower part of the residual liquid tank.
6. The device for cracking and treating high-boiling residues of organic silicon according to claim 4, further comprising a residue tank, wherein a high-boiling residue discharge pipeline is fixedly connected between the bottom outlet of the cracking reaction kettle and the top inlet of the residue tank, and a residue treatment pipeline is fixedly connected with the lower outlet of the residue tank.
7. The apparatus for cracking high boiling point silicone material according to claim 5, wherein a residual liquid pump is fixedly installed on the residual liquid treatment line.
8. The apparatus for cracking high boiling point silicone material according to claim 6, wherein a residual liquid pump is fixedly installed on the residual liquid treatment line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322312228.1U CN220696765U (en) | 2023-08-28 | 2023-08-28 | Cracking treatment device for organic silicon high-boiling-point substances |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322312228.1U CN220696765U (en) | 2023-08-28 | 2023-08-28 | Cracking treatment device for organic silicon high-boiling-point substances |
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| Publication Number | Publication Date |
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| CN220696765U true CN220696765U (en) | 2024-04-02 |
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| CN202322312228.1U Active CN220696765U (en) | 2023-08-28 | 2023-08-28 | Cracking treatment device for organic silicon high-boiling-point substances |
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- 2023-08-28 CN CN202322312228.1U patent/CN220696765U/en active Active
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