CN217016565U - System for recycling waste slurry and slag in organic silicon monomer synthesis section - Google Patents
System for recycling waste slurry and slag in organic silicon monomer synthesis section Download PDFInfo
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- CN217016565U CN217016565U CN202220774665.8U CN202220774665U CN217016565U CN 217016565 U CN217016565 U CN 217016565U CN 202220774665 U CN202220774665 U CN 202220774665U CN 217016565 U CN217016565 U CN 217016565U
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Abstract
The utility model relates to the technical field of organic silicon monomers, and aims to solve the problems of resource waste and environmental pollution caused by waste slurry residues in the conventional monomer synthesis section; the system for recycling the waste slurry slag in the organic silicon monomer synthesis section comprises a slurry slag tank, wherein the top end of the slurry slag tank is sequentially connected with a storage tank, a reaction kettle and a condenser; the reaction kettle is provided with a nitrogen inlet and a gas outlet, the gas outlet is communicated with a condenser through a pipeline, the reaction kettle is also provided with a heating device, the heating device is used for heating the organic silicon monomer in the reaction kettle to boiling, and the condenser is provided with a recovery pipe and an exhaust pipe; the organic silicon monomer such as tetramethyl dichlorodisilane, trimethyl trichlorosilane, dimethyl tetrachlorodisilane and the like in the slurry tank can be recovered, the cost is reduced, and the environmental pollution is reduced.
Description
Technical Field
The utility model relates to the technical field of organic silicon monomers, in particular to a waste slurry and slag recycling system in an organic silicon monomer synthesis section.
Background
The washing tower in the monomer synthesis section is mainly used for wet dust removal, silicon powder, copper powder, a contact body and other dust are washed and then discharged into a reboiler, the reboiler discharges liquid regularly according to a liquid level valve limit value, the dust, tetramethyl dichlorodisilane, trimethyl trichlorosilane, dimethyl tetrachlorodisilane and high-boiling polymer are discharged into a flash tank in the liquid discharge process, the dust and liquid mixture is collectively called slurry residue, the slurry residue is discharged into a slurry residue tank after nitrogen is fed into the flash tank and the slurry residue tank is transferred to a treatment center for hydrolysis. And the tetramethyl dichlorodisilane, trimethyl trichlorosilane and dimethyl tetrachloro disilane in the slurry tank are hydrolyzed in the treatment process, so that resource waste and environmental pollution are caused, and the slurry is required to be recycled.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a waste slurry residue recycling system for an organic silicon monomer synthesis section, which can recycle organic silicon monomers such as tetramethyl dichlorodisilane, trimethyl trichlorodisilane, dimethyl tetrachlorodisilane and the like in a slurry residue tank, reduce the cost and reduce the environmental pollution at the same time.
The embodiment of the utility model is realized by the following technical scheme:
a waste slurry and slag recycling system for an organic silicon monomer synthesis section comprises a slurry and slag tank, wherein the top end of the slurry and slag tank is sequentially connected with a storage tank, a reaction kettle and a condenser; be provided with nitrogen gas import and gas outlet on the reation kettle, the gas outlet passes through pipeline and condenser intercommunication, still be provided with heating device on the reation kettle, heating device is used for heating to the boiling to the inside organosilicon monomer of reation kettle, be provided with recovery tube and blast pipe on the condenser.
Further, the nitrogen inlet is arranged at the bottom of the reaction kettle.
Further, the pressure of the nitrogen gas at the nitrogen gas inlet is higher than the pressure in the reaction kettle.
Furthermore, a conveying pump is arranged on a pipeline connecting the top end of the slurry slag tank and the storage tank and a pipeline connecting the top end of the storage tank and the reaction kettle, and a filter is arranged in front of the conveying pump.
Further, the heating device comprises a jacket arranged on the outer wall of the reaction kettle, a liquid inlet is formed in the bottom of the jacket, and a liquid outlet is formed in the top of the jacket.
Furthermore, heat conducting oil is introduced into the jacket.
Further, a liquid outlet is also formed in the bottom of the reaction kettle.
Furthermore, a return pipe is further arranged on the condenser and can be communicated into the slurry tank.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
1. the method can recover tetramethyl dichlorodisilane, trimethyl trichlorosilane, dimethyl tetrachlorodisilane and the like in the slurry residue, the recovered materials can be sent to a rectification working section for cracking to generate useful substances for reuse, and the hydrolysis cost is relatively reduced after partial materials are recovered from the slurry residue; not only the resource is utilized to the maximum extent, but also the pollution to the environment is reduced while the cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a system for recycling waste slurry and slag in an organosilicon monomer synthesis section provided by the utility model;
icon: 1-slurry slag tank, 2-filter, 3-transfer pump, 4-storage tank, 5-reaction kettle, 51-nitrogen inlet, 52-liquid outlet, 53-gas outlet, 6-jacket, 61-liquid inlet, 62-liquid outlet, 7-condenser, 71-exhaust pipe, 72-recovery pipe and 73-return pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
A waste slurry and slag recycling system for an organic silicon monomer synthesis section comprises a slurry and slag tank 1, wherein the top end of the slurry and slag tank 1 is sequentially connected with a storage tank 4, a reaction kettle 5 and a condenser 7; be provided with nitrogen gas import 51 and gas outlet 53 on reation kettle 5, gas outlet 53 passes through pipeline and condenser 7 intercommunication, still be provided with heating device on reation kettle 5, heating device is used for heating to the boiling to the inside organosilicon monomer of reation kettle 5, be provided with recovery tube 72 and blast pipe 71 on the condenser 7.
In this embodiment, nitrogen gas import 51 set up in reation kettle 5 bottom gets into the nitrogen gas cooling from reation kettle 5 bottom, and the bottom is advanced nitrogen can be better with the liquid phase heat transfer, and the volatile tetramethyl dichlorosilane of while will vaporizing, trimethyl trichlorosilane, dimethyl tetrachloro disilane take out reation kettle 5.
In this embodiment, the pressure of the nitrogen at the nitrogen inlet 51 is higher than the pressure in the reaction kettle 5, and the liquid level in the reaction kettle 5 is controlled at 70% to avoid the liquid flowing out of the reaction kettle 5. Preferably, a one-way valve is arranged at the air inlet pipe opening of the nitrogen gas so as to improve the use stability and safety.
In this embodiment, a delivery pump 3 is disposed on a pipeline connecting the top end of the slurry tank 1 and the storage tank 4, and a pipeline connecting the top end of the storage tank 4 and the reaction kettle 5, and a filter 2 is disposed in front of the delivery pump 3.
In this embodiment, the heating device includes a jacket 6 disposed on an outer wall of the reaction kettle 5, a liquid inlet 61 is disposed at a bottom of the jacket 6, and a liquid outlet 62 is disposed at a top of the jacket 6, and specifically, heat conducting oil may be introduced into the jacket 6, so that the heating device can heat to a desired temperature more quickly and maintain stability.
In this embodiment, the bottom of the reaction kettle 5 is further provided with a liquid outlet 52, so as to facilitate timely discharging and cleaning of the material at the bottom of the reaction kettle 5.
In this embodiment, the condenser 7 is further provided with a return pipe 73, the return pipe 73 can be communicated to the slurry tank 1, the high-boiling polymer is not vaporized due to a high boiling point, and the high-boiling polymer is discharged from the bottom to the slurry tank 1 for hydrolysis after being condensed by the reaction kettle 5, so that the treatment effect and the utilization rate of the materials are improved, and the resource utilization is maximized.
Specifically, the working principle of the slurry-slag recovery system is as follows: because the main materials in the slurry slag tank 1 are the mixture of dust, tetramethyl dichlorodisilane, trimethyl trichlorosilane, dimethyl tetrachlorodisilane, high-boiling polymer and the like, the slurry slag tank 1 can have obvious layering after standing, wherein the dust is at the bottom, and the liquid at the top layer of the slurry slag tank 1 is pumped to a storage tank 4 by a conveying pump 3 through a conveying pipeline for storage through the tetramethyl dichlorodisilane, trimethyl trichlorosilane, dimethyl tetrachlorodisilane, high-boiling polymer and the like at the upper part; in addition, a filter 2 is added in front of the delivery pump 3 to filter impurities and prevent blockage; in addition, the filter 2 needs to be cleaned regularly to prevent the inlet of the delivery pump 3 from being blocked, then the tetramethyldichlorodisilane, the trimethyltrichlorosilane, the dimethyltetrachlorodisilane and the high-boiling polymer in the storage tank 4 are delivered into the reaction kettle 5 through a delivery pipeline by using a delivery pump, after the materials are injected into the reaction kettle 5, a stirring device in the reaction kettle 5 is started, meanwhile, the heat conduction oil is introduced into the jacket 6 to be heated to about 150 ℃, the temperature is kept for about 2 hours, because the boiling points of the tetramethyldichlorodisilane, the trimethyltrichlorosilane and the dimethyltetrachlorodisilane are about 70 ℃, the boiling point of the high-boiling polymer is over 200 ℃, different substances are separated through different boiling points, after the heating is finished, the monomer is vaporized, at the moment, nitrogen enters from the bottom of the reaction kettle 5 to be cooled, the nitrogen can better exchange heat with the liquid phase through entering the bottom, and simultaneously, the vaporized and volatilized tetramethyldichlorodisilane, Trimethyltrichlorosilane and dimethyltetrachlorodisilane are taken out of the reaction kettle 5 to a condenser 7 through a gas outlet 53 by utilizing a conveying pipeline, the taken-out gas is condensed by the condenser 7 and then enters a recovery tank through a recovery pipe 72, and materials in the recovery tank are conveyed to a rectification working section through the pipeline to be cracked to generate a first hydrogen, a second hydrogen and a first hydrogen, so that resources are utilized to the maximum extent, the cost is reduced, and the pollution to the environment is also reduced; the high-boiling polymer is not vaporized due to the high boiling point, and the high-boiling polymer can be discharged into the slurry tank 1 from the return pipe 73 at the bottom after the reaction kettle 5 is condensed to be hydrolyzed continuously. In addition, the gas in the condenser 7 can be vented to the off-gas treatment by the gas exhaust pipe 71.
Claims (8)
1. The system for recycling the waste slurry slag in the organic silicon monomer synthesis section is characterized by comprising a slurry slag tank, wherein the top end of the slurry slag tank is sequentially connected with a storage tank, a reaction kettle and a condenser;
the reaction kettle is provided with a nitrogen inlet and an air outlet, the air outlet is communicated with the condenser through a pipeline,
the reaction kettle is also provided with a heating device which is used for heating the organic silicon monomer in the reaction kettle to boiling,
and the condenser is provided with a recovery pipe and an exhaust pipe.
2. The system for recycling waste slurry and slag in the organic silicon monomer synthesis workshop section as claimed in claim 1, wherein the nitrogen inlet is arranged at the bottom of the reaction kettle.
3. The system for recycling the waste slurry slag in the organic silicon monomer synthesis workshop section as claimed in claim 2, wherein the pressure of the nitrogen at the nitrogen inlet is higher than the pressure in the reaction kettle.
4. The system for recycling the waste slurry and slag in the organic silicon monomer synthesis workshop section according to claim 1, wherein a pipeline connecting the top end of the slurry and slag tank with the storage tank and a pipeline connecting the top end of the storage tank with the reaction kettle are provided with a conveying pump, and a filter is arranged in front of the conveying pump.
5. The system for recycling waste slurry and slag in an organic silicon monomer synthesis workshop section according to claim 1, wherein the heating device comprises a jacket arranged on the outer wall of the reaction kettle, a liquid inlet is formed in the bottom of the jacket, and a liquid outlet is formed in the top of the jacket.
6. The system for recycling the waste slurry and slag in the organic silicon monomer synthesis working section as claimed in claim 5, wherein heat conducting oil is introduced into the jacket.
7. The system for recycling the waste slurry and slag in the organic silicon monomer synthesis workshop section according to claim 1, wherein a liquid discharge port is further formed in the bottom of the reaction kettle.
8. The system for recycling the waste slurry and slag in the organic silicon monomer synthesis working section as claimed in claim 1, wherein the condenser is further provided with a return pipe, and the return pipe can be communicated to the slurry tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220774665.8U CN217016565U (en) | 2022-04-02 | 2022-04-02 | System for recycling waste slurry and slag in organic silicon monomer synthesis section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220774665.8U CN217016565U (en) | 2022-04-02 | 2022-04-02 | System for recycling waste slurry and slag in organic silicon monomer synthesis section |
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| CN217016565U true CN217016565U (en) | 2022-07-22 |
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| CN202220774665.8U Active CN217016565U (en) | 2022-04-02 | 2022-04-02 | System for recycling waste slurry and slag in organic silicon monomer synthesis section |
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- 2022-04-02 CN CN202220774665.8U patent/CN217016565U/en active Active
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