CN104415560A - Polysilicon cold hydrogenation raffinate recovery system - Google Patents
Polysilicon cold hydrogenation raffinate recovery system Download PDFInfo
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- CN104415560A CN104415560A CN201310372330.9A CN201310372330A CN104415560A CN 104415560 A CN104415560 A CN 104415560A CN 201310372330 A CN201310372330 A CN 201310372330A CN 104415560 A CN104415560 A CN 104415560A
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- raffinate
- chlorosilane
- cold hydrogenation
- recovery system
- polysilicon
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Abstract
A polysilicon cold hydrogenation raffinate recovery system is used for recovering a raffinate from a washing system. The polysilicon cold hydrogenation raffinate recovery system comprises a raffinate pot for containing the raffinate, a gasifying device for gasifying chlorosilane, and a condensate recovery device. The gasifying device is connected with the raffinate pot through a bubbling tube, gasified chlorosilane bubbles and heats the raffinate in the raffinate pot, and the condensate recovery device collects gaseous chlorosilane from the raffinate pot. The polysilicon cold hydrogenation raffinate recovery system utilizes gasified chlorosilane to carry out bubbling evaporation on the raffinate in the raffinate pot in order to realize solid-liquid separation, evaporated chlorosilane and chlorosilane for bubbling are condensed, the obtained condensate is recycled to be used as raw material for polysilicon cold hydrogenation production, and no unnecessary medium enters the whole recycling process, so the recovered material is prevented from being polluted by impurities, and the purity of subsequently produced polysilicon is guaranteed.
Description
Technical field
The present invention relates to a kind of raffinate recovery system, be specifically related to a kind of raffinate recovery system of polysilicon cold hydrogenation.
Background technology
In polysilicon manufacture process, the raffinate of washing system needs separation and recovery to use, and these raffinates comprise liquid chlorosilane liquid produced and silicon powder particle, generally need to arrange a mixer in addition and stir in residual liquid tank.But the stirring of metal blade in raffinate of mixer, can pollute raffinate, affects follow-up polysilicon product quality.
Summary of the invention
For above-mentioned existing problem, the object of this invention is to provide a kind of raffinate recovery system of more clean polysilicon cold hydrogenation.
A raffinate recovery system for polysilicon cold hydrogenation, for reclaiming the raffinate coming from washing system.The raffinate recovery system of polysilicon cold hydrogenation comprises the residual liquid tank holding raffinate, the gasifier gasifying chlorosilane and condensate liquid recover.Gasifier and this residual liquid tank are connected to residual liquid tank by bubbling pipe and utilize the chlorosilane after gasifying by the raffinate bubbling in residual liquid tank and heat, and the gaseous chlorine silane coming from residual liquid tank collected by this condensate liquid recover.
The raffinate recovery system of the polysilicon cold hydrogenation of this case utilizes the liquid in the evaporation of the chlorosilane bubbling after gasifying residual liquid tank, realize Separation of Solid and Liquid, simultaneously, chlorosilane liquid produced after evaporation can together with the chlorosilane of bubbling after condensation as polysilicon cold hydrogenation manufacture raw material, recycle, whole recycling process does not have unnecessary medium to enter, and can ensure that the material after reclaiming can not be subject to contaminating impurity, ensure the purity of follow-up production of polysilicon.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the raffinate recovery system of polysilicon cold hydrogenation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the raffinate recovery system of polysilicon cold hydrogenation of the present invention is for reclaiming the raffinate coming from washing system 10.The raffinate recovery system of polysilicon cold hydrogenation comprises residual liquid tank 20, gasifier 22 and condensate liquid recover 24.Wherein residual liquid tank 20 is for holding the raffinate coming from washing system 10, and the main component of raffinate is liquid chlorosilane and silicon powder particle.Gasifier 22 utilizes bubbling pipe 221 to be connected with bottom residual liquid tank 20, and gasifier 22, for being gasified by chlorosilane heating raw materials, then to pass into bottom residual liquid tank 20 bubbling in residual liquid tank 20 by bubbling pipe 221.The chlorosilane of gaseous state is while bubbling, and heating raffinate, makes chlorosilane liquid in raffinate become gaseous state.Residual liquid tank 20 top has breather pipe 241 to pass into condensate liquid recover 24.Pass into residual liquid tank 20 for bubbling gaseous chlorine silane be heated as together with gaseous chlorine silane in raffinate, enter condensate liquid recover 24 condensation through breather pipe 241 and be in a liquid state, the purified rear raw material for standby as polysilicon cold hydrogenation.The raffinate recovery system of the polysilicon cold hydrogenation of this case utilizes the liquid in the evaporation of the chlorosilane bubbling after gasifying residual liquid tank 20, realize Separation of Solid and Liquid, simultaneously, chlorosilane liquid produced after evaporation can together with the chlorosilane of bubbling after condensation as polysilicon cold hydrogenation manufacture raw material, recycle, whole recycling process does not have unnecessary medium to enter, and can ensure that the material after reclaiming can not be subject to contaminating impurity, ensure the purity of follow-up production of polysilicon.
Be appreciated that and can also arrange a circulating pump, circulating pump utilizes pipeline to be connected with gasifier 22 with condensate liquid recover 24 respectively.Circulating pump is used for the liquid chlorosilane part of condensate liquid recover 24 to extract to pass in gasifier 22, forms circulation, system can be worked continuously for a long time.
Be appreciated that residual liquid tank 20 directly can also be connected with gasifier by pipeline, the gas in residual liquid tank 20 directly enters in gasifier and heats, more energy-conservation.
The above; for better case study on implementation of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (4)
1. the raffinate recovery system of a polysilicon cold hydrogenation, for reclaiming the raffinate coming from washing system, it is characterized in that: the raffinate recovery system of this polysilicon cold hydrogenation comprises the residual liquid tank holding raffinate, the gasifier gasifying chlorosilane and condensate liquid recover, this gasifier and this residual liquid tank are connected to residual liquid tank by bubbling pipe and are heated by the raffinate bubbling in residual liquid tank to utilize the chlorosilane after gasifying, and the gaseous chlorine silane coming from residual liquid tank collected by this condensate liquid recover.
2. the raffinate recovery system of polysilicon cold hydrogenation according to claim 1, is characterized in that, also comprise circulating pump, and this circulating pump connects condensate liquid recover and gasifier, delivers in gasifier for being extracted by the chlorosilane of condensate liquid recover.
3. the raffinate recovery system of polysilicon cold hydrogenation according to claim 1, is characterized in that, described bubbling pipe pipe is connected to bottom residual liquid tank.
4. the raffinate recovery system of polysilicon cold hydrogenation according to claim 1, it is characterized in that, residual liquid tank is directly connected with gasifier by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310372330.9A CN104415560A (en) | 2013-08-24 | 2013-08-24 | Polysilicon cold hydrogenation raffinate recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310372330.9A CN104415560A (en) | 2013-08-24 | 2013-08-24 | Polysilicon cold hydrogenation raffinate recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104415560A true CN104415560A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310372330.9A Pending CN104415560A (en) | 2013-08-24 | 2013-08-24 | Polysilicon cold hydrogenation raffinate recovery system |
Country Status (1)
| Country | Link |
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| CN (1) | CN104415560A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082088A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | System and method for recovering residual liquid in loading and unloading of liquefied hydrocarbon |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080804A (en) * | 1989-12-19 | 1992-01-14 | Huels Aktiengesellschaft | Waste liquid-free processing of chlorosilane distillation residues with calcium carbonate |
| CN1244438A (en) * | 1998-08-11 | 2000-02-16 | 陈源 | Scale preventing method for the concentration process of solution or liquid mixture |
| CN1438226A (en) * | 2003-01-07 | 2003-08-27 | 蓝星化工新材料股份有限公司江西星火有机硅厂 | Wet-dusting and high-boiling-point separation technology for organic silane chloride synthesized gas |
| CN102442672A (en) * | 2011-09-28 | 2012-05-09 | 洛阳晶辉新能源科技有限公司 | Method for purifying and recycling impurity-containing chlorosilane and application of method in polysilicon production |
| CN202968141U (en) * | 2012-12-11 | 2013-06-05 | 成都蜀菱科技发展有限公司 | Chlorosilane residual liquid recovery device |
-
2013
- 2013-08-24 CN CN201310372330.9A patent/CN104415560A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080804A (en) * | 1989-12-19 | 1992-01-14 | Huels Aktiengesellschaft | Waste liquid-free processing of chlorosilane distillation residues with calcium carbonate |
| CN1244438A (en) * | 1998-08-11 | 2000-02-16 | 陈源 | Scale preventing method for the concentration process of solution or liquid mixture |
| CN1438226A (en) * | 2003-01-07 | 2003-08-27 | 蓝星化工新材料股份有限公司江西星火有机硅厂 | Wet-dusting and high-boiling-point separation technology for organic silane chloride synthesized gas |
| CN102442672A (en) * | 2011-09-28 | 2012-05-09 | 洛阳晶辉新能源科技有限公司 | Method for purifying and recycling impurity-containing chlorosilane and application of method in polysilicon production |
| CN202968141U (en) * | 2012-12-11 | 2013-06-05 | 成都蜀菱科技发展有限公司 | Chlorosilane residual liquid recovery device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082088A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | System and method for recovering residual liquid in loading and unloading of liquefied hydrocarbon |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20150318 |